CN107848606A

CN107848606A - Possess the floating body structure and its design method of liquefied gas storage equipment

Info

Publication number: CN107848606A
Application number: CN201680041296.9A
Authority: CN
Inventors: 中田崇
Original assignee: Mitsui Engineering and Shipbuilding Co Ltd
Current assignee: Mitsui Yi ace Shipbuilding Co., Ltd.
Priority date: 2015-08-25
Filing date: 2016-08-16
Publication date: 2018-03-27
Anticipated expiration: 2036-08-16
Also published as: KR20180011343A; JP2017043154A; WO2017033800A1; JP6067804B1; CN107848606B; KR101949215B1

Abstract

The present invention is by the product tank formed by liquefied gas at low temp tank（11）Cargo area（R1）Rear at there is engine room（5）, the floating body structure for possessing liquefied gas storage equipment（1A~1E）It is configured to, in cargo area（R1）Rear and engine room（5）Some or all places of upside be configured with cargo facility room（12）In the state of, product tank（11）Total carrying volume be 60000m³Above 90000m³Hereinafter, there is product tank（11）With cargo compartment（10）Sufficient structural strength, and hull construction possesses for navigating by water sufficient freeboard and the reconstitution properties relative to lateral inclination.Thus, danger caused by the high pressure gas leakage of fuel gas pipe arrangement is reduced, and guarantees new additional configuration handling facilities, cabin, the place of large-scale assembling product.In addition, it is not only LNG, additionally it is possible to efficiently convey the multiple gases such as other gases using conveying in region or closely convey.

Description

Possess the floating body structure and its design method of liquefied gas storage equipment

Technical field

The present invention relates to the floating body structure for possessing liquefied gas storage equipment and its design method, in more detail, It is related to and is configured to possess the equipment for temporarily storing liquid gas and cargo facility room, suitable closely conveying and coastal region The liquefied gas carrier of the multiple gases of the middle scale volume of the ten thousand stere of the ten thousand stere of reply 6 ~ 9 of interior 2 conveyings, possess The ship of liquid gas fuel tank, the floating body structure for possessing liquid gas fuel tank have liquefied gas storage equipment Floating body structure etc. possesses the floating body structure and its design method of liquefied gas storage equipment.

Background technology

Liquified natural gas carrier (LNGC) in liquefied gas carrier（LNG ship）In, in order to using due to the day as goods The natural evaporation of right gas and caused boil-off gas uses as fuel, fuel gas pipe arrangement is passed through inhabitation from cargo facility room The side in area is laid to the rear of engine room, and by the fuel gas pipe arrangement, boil-off gas, which is imported into, is arranged at cargo area Main frame in the engine room at the rear in domain.

Recently, the fuel utilization on the boil-off gas, the main frame as LNG ship use the low-speed diesel engine of double fuel Technology is just concerned, in this case, it is necessary to make natural gas high pressure as fuel to 300bar~400bar or so come to Main frame supplies.Therefore, in the configuration of conventional ship, high press fit pipe is laid to engine room from fuel supply system, it is above-mentioned Fuel supply system is arranged at the cargo facility room from engine room separation farther out.

Therefore, if in the case that conventional ship uses steam turbine like that in main frame, even if fuel uses natural gas, Pressure to the natural gas of boiler supply is low pressure, so even if just in case fuel gas pipe arrangement is damaged, on natural by this Gas spills the caused dangerous danger for also only considering gas burst, if but spilt by the natural gas of high-pressure trend, then Except the danger of gas burst, the injured possibility of crew caused by being sprayed due to the gas under high pressure also be present.

As the countermeasure spilt for the gas, it is necessary to set coating on fuel gas pipe arrangement, or by fuel gas Body pipe arrangement needs more harsh corrosion protection countermeasure in the case of being set under exposed state as in the past, so being not only difficult to reality Now danger substantially avoids, and the cost of ship can also rise.

In addition, the equipment class as the high-pressure trend for liquid gas such as natural gases, is produced using large electric equipment Necessity, so needing to increase the electric wiring of the power supply to large electric equipment, the wire guide sets more difficult, cost Uprise.

In addition, in order to be provided for the large electric equipment of the high-pressure trend of the liquid gas, it is necessary in cargo facility room Installation space, produce the necessity for expanding cargo facility room.And then in order to be arranged to relative to multiple port entrance and clearances, production It is raw that additional in the equipment of conventional ship new handling facilities, the new cabins of other purposes, new large-scale assembling product are set It is necessary.

However, in MOSS type LNG ships, the upside of spherical product tank significantly protrudes on upper deck, institute's above first It is free to set the place of equipment less on plate, for setting cargo facility room, handling concetrated pipe（Pipe arrangement connection collects Close pipe）Place Deng handling facilities, other large-scale assembling product is limited on upper deck, and setting place is defined.

In conventional liquefied gas carrier, cargo facility room is few to be configured at than fore portion in small-sized ship The situation of the cargo space as liquefied gas storage equipment of front end position closer to the front, but it is general such as Figure 12 and figure Illustrated in 13, liquefied gas carrier 1X cargo facility room 12 is arranged between product tank 11 so that it is required that explosion-proof The cargo area R1 of countermeasure etc. will not expand in vain.In addition, handling concetrated pipe 13 is arranged at cargo area R1 goods Between tank 11, residential area 8 and engine room 5 are arranged at cargo area R1 rear.

In addition, as the example, for example, as described in the Japanese Unexamined Patent Publication 7-301372 publications of Japanese publication, figure Following LNG ship is shown with, in the case where being equipped with the LNG ship of spherical product tank of MOSS types, by goods Machine Room（Goods is set Standby room）It is arranged on the upper deck of cargo area between the product tank of rearmost and the product tank in front of it, in front of this Ship set pipe is provided between product tank and the product tank in its further front（Handling concetrated pipe）.

Therefore, if to maintain the state for the configuration that residential area is set on the engine room of conventional ship, in cargo area Front or behind upper deck on, the cargo facility room bigger than conventional ship is set, then producing makes the length of LNG ship extremely Necessity of few amount corresponding with the length of the cargo facility room, so the price of LNG ship can be substantially increased.

In addition, the place on handling concetrated pipe, in the case of being limited to a certain degree at port, setting place is defined It is more for the situation at one, so between cargo facility room, handling being arranged at into product tank with concetrated pipe and gangway ladder, but In the case that port can not be defined, generation needs to set the necessity of multiple handling concetrated pipes, and setting place ensures more It is important.In addition, in the case where the quantity of product tank tails off, the place that can be set originally is reduced, so the setting place Ensure to turn into prior problem.

On the other hand, LNG is transported（Liquefied natural gas）LNG ship it is more and more large-scale, it is contemplated that the Large LNG from now on Ship can increase.In the conveying of the LNG, LNG main component is methane（CH₄）, pressure during conveying under LNG liquid condition Power is atmospheric pressure, and temperature is subzero 162 DEG C, and the liquid specific gravity of the methane of main component is 0.43, but according to LNG constituent Than liquid specific gravity is 0.43~0.48.Therefore, possess the heat radiating constructions such as thermal insulation layer in order to which tank is remained into low temperature.In addition, by It is very light for less than 0.5 in the proportion of liquefied natural gas, so, turn into relative to the larger construction of the volume of hull tank.

Moreover, in recent years, the ship on the LNG conveys, and needs the closely transport that is carried out by ship and coastal gradually 2 transports in region, especially, the size of the land tank of LNG receivings in Japan is the non-of 6 ten thousand steres to 9 ten thousand steres Chang Duo, it is corresponding to its, there are in fact the LNG ship of the middle scale of 6 ten thousand steres to 9 ten thousand steres, but navigate by water with film-type Based on LNG ship.

However, the tank of the film-type is weaker for rocking, navigated not in being likely to occur to transport under the half cargo condition that rocks, Tank is fully loaded with or ullage load is selected one, so can not carry out needing while small to being divided into for multiple ports dispensing LNG one side navigations Partial loading and unloading, there are 6 ten thousand steres for being not suitable for being used in the purposes that 2 transports etc. are closely transported in region To the middle scale of 9 ten thousand steres liquefied gas carrier the problem of.

As the solution that this is rocked, such as described in 6-No. 123569 publications of Japanese publication Unexamined Patent, The liquefied gas at low temp tank of MOSS types is considered as, although not recording conveying scale, discloses and possesses 3 to 5 MOSS The LNG ship of the liquefied gas at low temp tank of type.

On the other hand, the liquid gas on middle scale conveys, and also has with the special situations to convey of LNG, but in recent years, It is not only LNG, ethane（C₂H₆）And ethene（C₂H₄）Conveying be also promoted to purposes.Therefore, transported from effective using liquid gas The aspect of ship, it is necessary to the conveying of ethane or ethene can also be carried out in addition to LNG and LPG conveying,.

However, on LPG（Liquefied petroleum gas）, have the real achievements of the LPG ships of scale in identical, in addition, in ethene Aspect has the navigation real achievement of the Liquefied Ethylene Carriers of 3500 tons of ethene carrying weight, can be according to situation, general but without producing 6 ten thousand steres that the multiple gases such as LNG, LPG, ethane, ethene are carried and conveyed with same liquefied gas carrier are to 90,000 The liquefied gas carrier of the middle scale of cubic meter.

The LPG, for main component, is under atmospheric pressure also than liquefied gas combustion under higher temperatures with propane and butane etc. Material is bigger than LNG weights, the heat ratio LNG of per unit volume.For example, under atmospheric pressure under (about 1 atmospheric pressure), butane is subzero 0.5 DEG C to subzero 11.7 DEG C liquefaction, propane is in subzero 42.1 DEG C liquefaction.

In addition, ethane is to be only second to methane in natural gas to contain more composition, in addition, can also make from oil gas For liquefaction when accessory substance obtain.The boiling point of ethane is subzero 89 DEG C at ambient pressure, and the proportion of liquid is 0.55.The boiling point of ethene It is subzero 104 DEG C at ambient pressure, proportion during conveying is 0.57.Temperature and pressure during conveying under the liquid condition of the ethene It is subzero 104 DEG C, 0.1MPa (about 1 atmospheric pressure).

If the ethene is carried in LNG ship as former state, in terms of thermal insulation, temperature during conveying is relative to LNG Subzero 162 DEG C, ethene be subzero 104 DEG C, in addition, conveying when pressure for LNG and ethene also generally be all air Pressure, so be all sufficient on temperature treatment and stress management, but liquid specific gravity during due to conveying relative to LNG is Less than 0.5, the liquid specific gravity of ethene is 0.57, so tank intensity is insufficient, it is impossible to carries and conveys.

In addition, because the difference of the liquid specific gravity, if carried as former state, in the overall center of gravity of ship when conveying Rise, the reconstitution properties on lateral inclination required for fortune boat（Stability）Can deficiency.In other words, there is problems with:Utilize LNG Ship for Transporting Module, it is impossible to convey ethene etc., it is difficult to as the conveying middle scale more compared with the chance of the multiple gases of multiple types Liquefied gas carrier problem.

In addition, the design method on liquefied gas carrier, such as the liquid gas in MOSS types special design LNG During cargo ship, beam of hull is generally planned to identical, and determines tank diameter, enables to equip LNG tank insulations, and When designing the special liquefied gas carrier of ethane, reduce corresponding to the thickness of insulation, tank diameter is become big and is realized tank volume Maximization.In addition, in order that tank volume maximize, if in the stability permissible range of this ship, just by the ball of MOSS types The ambitus of shape tank is extended and realizes maximization etc., and the liquefied gas carrier of the liquid gas of special species is conveyed in design When, the characteristic of special liquid gas is matched with respectively to be designed, so in a variety of goods such as LNG/LPG/ ethane/ethylenes In the case of, which kind of liquid gas to determine each design object turns into the problem of larger corresponding to.

In addition, as principle, cargo facility room can not together configure with residential area, therefore, generally by the cargo facility room Cargo area is configured at, so being configured between the product tank on upper deck and product tank.Therefore there are the following problems：In goods In the case that tank is less, can configure the place of cargo facility room turns into its mutual position, if cargo facility room occupies One of position, the then configuration of handling concetrated pipe are also required to the product tank and product tank being configured on identical upper deck Between, therefore the handling are defined as remaining position with the configuration place of concetrated pipe, the free degree of configuration completely without.

Patent document 1:Japanese publication Unexamined Patent 7-301372 publications（Paragraph (0002) and (0025), Fig. 5）.

Patent document 2:Japanese publication Unexamined Patent 6-123569 publications.

The content of the invention

The present invention is in view of above-mentioned condition and makes, and its object is to provide a kind of to possess liquefied gas storage equipment Floating body structure and its design method, in possessing the floating body structure of liquefied gas storage equipment, reduce the combustion from high pressure Expect the danger brought of leakage of the gases at high pressure of gas pipe, and be able to ensure that the additional new handling facilities, newly of configuring The place of cabin, new large-scale assembling product, also, it is not only LNG, additionally it is possible to the multiple gases such as LPG, ethane, ethene are utilized Conveyed in region or closely convey efficiently transportation of liquefied gas, and have what can be freighted and unloaded at multiple ports Function.

For realizing that the floating body structure for possessing liquefied gas storage equipment of the purpose present invention as described above is as follows The floating body structure for possessing liquefied gas storage equipment, it has a cargo area, and has hair at the rear of the cargo area Motivation room, and some or all of residential area are arranged on upper deck, above mentioned goods region is equipped with by MOSS types The product tank that is formed of liquefied gas at low temp tank, it is characterised in that in the rear in above mentioned goods region and above-mentioned engine room Some or all places of upside are configured with the state of cargo facility room, and total carrying volume of above mentioned goods tank is 60000m³Above 90000m³Hereinafter, also, the structural strength of above mentioned goods tank and carry above mentioned goods tank cargo compartment structure Make intensity and be the structural strength for allowing LNG or ethane or ethene or LPG carrying, also, hull construction with Endurance is transported in the case of lower 3 kinds, possesses sufficient freeboard and the reconstitution properties relative to lateral inclination respectively for navigation：Above-mentioned LNG situation is equipped with the whole of product tank；Ethane or ethene or LPG are equipped with the whole of above mentioned goods tank Situation；Or a variety of situations in above mentioned goods tank in hybrid LNG, ethane, ethene, LPG.

In addition, it is to represent engine room in some or all places of the upside of engine room configuration cargo facility room Ceiling a part for cargo facility room ground situation and engine room all cargo facility rooms of ceiling ground The situation in face.

According to some or all structures for the upside that the cargo facility room is configured to engine room, have following Described effect.That is, can not together be configured with residential area as principle, cargo facility room, therefore, generally by the cargo facility room Cargo area is configured at, is configured between the product tank on upper deck and product tank.Therefore, in the case where product tank is 3, The place that cargo facility room can be configured is mutual two positions on its fore-and-aft direction, if cargo facility room occupies it In a position, then handling concetrated pipe（Pipe arrangement connection concetrated pipe）Configuration be also required to be configured on identical upper deck Product tank and product tank between, therefore the handling are defined as a remaining position with the configuration place of concetrated pipe, configuration The free degree completely without the problem of handling facilities in the bay that can not tackle navigation destination being present, but by by cargo facility Room is configured at the upside of engine room, can configure the place of handling concetrated pipe and turn into two positions, correspondingly produces handling With the free degree in the configuration place of concetrated pipe, the effect with the handling facilities for being easy to tackle bay.

In addition, by the cargo facility room for accommodating equipment for transferring fuel gas from moved between product tank set to The surface of the engine room using the main frame of fuel gas, generating equipment is accommodated with, will be in order to will so can not only use The liquid gas such as natural gas be used as fuel and the fuel gas pipe arrangement that sets from cargo facility room reach outside once it is backward just Lower section engine room guiding structure, also can use by the fuel gas pipe arrangement from cargo facility room directly in it just The structure of the engine room guiding of lower section.

As a result, the laying of the fuel gas pipe arrangement of the high pressure of the main frame from cargo facility room to engine room can be shortened Length, therefore the possibility step-down of gas leakage in fuel, blast caused by the leakage for the fuel gas that high pressure can be reduced with And to the injured and dangerous of human body.Also, the scope of corrosion protection countermeasure also diminishes, the wire guide of power supply electric wire etc. is set Also it is easy to become.

Further, since being the structure that the fuel gas pipe arrangement of high pressure is not passed through the side of residential area, therefore leaked in gas When, the fuel gas intrusion residential area of danger can be exploded or the fuel gas of high pressure directly makes crew injured Possibility significantly reduces.

Accompany with this, it is not necessary to ensure the space for setting cargo facility room between product tank, therefore can be in goods Miscellaneous equipment is set between tank, it can be ensured that sets the additional handling facilities such as additional handling concetrated pipe, another purposes to chase after The cabin that adds, the place of the large-scale assembling product of addition.

Moreover, with being configured with goods Machine Room and by 1 layer of portion of goods Machine Room for the narrow between product tank The prior arts for being allocated as making 3 layers of construction for path space forwards, backwards are compared, in the structure shown here, due to by goods Machine Room Configuration can utilize the whole width in deck on engine room.Therefore, it is possible to ensure path space in left and right, and do Suppress to set height into 1 layer to 2 layers construction, thereby, it is possible to reduce wind pressure resistance and lower the center of gravity.

Moreover, according to the structure, because the total carrying volume for making product tank is 60000m³Above 90000m³Hereinafter, because This can realize middle scale, the high efficiency closely conveyed of liquid gas by the liquefied gas carrier of the medium size.

Further, since it is equipped with the product tank of MOSS types for being difficult to produce and rocking, being conveyed with half cargo condition, therefore energy Enough product tanks by using the MOSS types, solve that liquefied gas liquid brings rocks problem.As a result, it can carry out existing Fortune boat under the tank half cargo condition that can not be carried out in the liquefied gas carrier of the film-type tank of technology because rocking, can be carried out A small amount of unloading at multiple ports.

On the heat radiating construction of the product tank, the LNG that temperature during by being set to cope with conveying is subzero 162 DEG C is used Heat radiating construction, thus turn into relative to the ethene that temperature when conveying is subzero 104 DEG C also effective heat radiating construction.

In addition, especially can carry out it is hybrid in the case of, on the structural strength of the product tank, liquid ratio during conveying Turn into larger factor again, so that relative to the larger second in liquid specific gravity when LNG and the conveying of ethane or ethene The liquid specific gravity 0.55 of alkane or the liquid specific gravity 0.57 of ethene have sufficient structural strength.In addition, make relative to liquid ratio The intensity that the full load condition and half cargo condition of the different LNG of weight and ethane or ethene also cope with.Thereby, it is possible in the goods LNG and both ethane or ethene are carried in thing tank respectively and is conveyed, the condition of pressure, boiling point and proportion during conveying is alleviated, Or the LPG of same degree also can respectively be carried and conveyed using identical method.

In addition, abundant intensity of the intensity of the hull of navigation with reply LNG in temperature by product tank supporting, and Making in the state of the larger ethane of proportion, ethene or LPG is equipped with also can be to sufficiently support the shape of product tank The intensity of state navigation.

In addition, on hull, in the case of the lighter LNG of proportion is equipped with, can also ensure that needed for navigation The drinking water wanted, in addition, in the case of the heavier ethane of proportion, ethene or LPG is equipped with, it can also ensure that navigation institute The freeboard and reconstitution properties needed（Stability）, and in the hybrid different LNG of proportion, ethane, ethene, LPG When a variety of, freeboard, reconstitution properties are can also ensure that, and make the trim of hull（Fore-and-aft tilt）As be suitable for navigation trim. These, and can be in the model of prior art by ensuring the capacity of ballast tank and setting configuration and the hull shape of ballast tank Fully realized in enclosing.

By these product tanks, LNG heat radiating constructions, LNG or ethane or the structural strength and goods of ethene or LPG tank The structural strength in thing cabin, the combination for coping with a variety of hybrid hull constructions in LNG, ethane, ethene, LPG, composition make Total carrying volume of product tank is 60000m³Above 90000m³Following middle scale volume can carry multiple gases, Possesses the floating body structure of liquefied gas storage equipment.

In other words, by conveying scale, product tank, tackle multiple gases product tank structural strength and cargo compartment Structural strength, tackle the structural strength of hull construction of multiple gases and freeboard when tackling the navigation of multiple gases, multiple The combination ensured of originality energy, using the teaching of the invention it is possible to provide following such floating body structure for possessing liquefied gas storage equipment：It can incite somebody to action The liquid gas of middle scale efficiently conveys, and copes with and freight and unload at multiple ports, can be engaged in transport 60000m³ Above 90000m³The middle scale liquefaction gas conveying of following liquid gas.

In other words, the floating body structure for possessing liquefied gas storage equipment carries out the low temperature such as LNG, ethane, ethene, LPG The conveying of liquid gas, it can also be used relative to each liquid gas as special purpose ship, and by setting up or chasing after as needed Add and put liquefying plant, gas treatment equipment, and as the structure that can also be used as multiple gases carrier, it is described a variety of Carrier gas can change according to the purposes of liquid gas freights.

Possesses the floating body structure of liquefied gas storage equipment in said structure, above mentioned goods tank is configured to goods Thing heat radiating construction.The goods is set to cope with the exhausted of the minimum goods of the delivery temperature loaded in predetermined goods with adiabatic structure Thermotectonics.

If possesses the floating body structure of liquefied gas storage equipment in said structure, the carrying number of above mentioned goods tank For 3, it is 20000m to make each tank volume³Above 30000m³Hereinafter, then it is the state of 3 that can be set as tank number, keep compared with High transfer efficiency, and can efficiency carry out a small amount of unloading that the consumption when middle scale conveys is located in well and navigate by water.

If possessing the floating body structure of liquefied gas storage equipment in said structure, above mentioned goods tank each tank it Between one or several or whole places be configured with handling concetrated pipe, the handling concetrated pipe can be connected on land or ocean Handling facilities side pipe arrangement, then can increase the matching with land or deepwater handling facilities side.

If in the above-mentioned floating body structure for possessing liquefied gas storage equipment, possess to be configured at and leaned on than above mentioned goods region The fore building including navigation bridge or above-mentioned residential area of the position in front, then can be it is easy to ensure that such as with spherical MOSS Turn into the front of problem in the floating body structure that the such macrostructure thing of situation that type tank forms product tank protrudes on upper deck The visual field.

According to the structure, due to navigation bridge to be configured to the position in the front leaned on than the product tank of forefront, therefore The higher product tank of height will not turn into the obstacle that Qian Fang lookouts are carried out from navigation bridge, can ensure that front regards well Open country, so can make to sail ship raising.

In addition, from the viewpoint of the field of front vision, can compared with navigation bridge is configured at into the situation of stern-side The height of navigation bridge is reduced, in addition, in the case that the residential area of a part is configured at into stern-side, without making Residential area uprises, so can lower suppress the overall height of ship.The result is that head room diminishes, so possessing liquefaction The scope that the floating body structure of gas storage facility can navigate by water expands, it is possible to increase this possesses the floating of liquefied gas storage equipment The versatility of body structure.For example, head room step-down, thus, it is possible to relative to important ports more than two ports（It is for example, French Meng Tuoyier ports, the Ai Fuleite ports etc. in the U.S.）Enter a port.

In addition, in this case, if navigation bridge to be located to the topmost in fore building, before can widely ensuring The square visual field, therefore be preferred.If in addition, by radar be located at fore building top, compared on engine room located at easily by Situation to the top of the stern-side of vibration is compared, and vibration diminishes, and vibrationproof countermeasure becomes easy, therefore is preferred, the pseudomorphism of tank cover Beat in problem to be also addressed.

If in addition, in the above-mentioned floating body structure for possessing liquefied gas storage equipment, possess to be configured at and compare above mentioned goods The fore building including navigation bridge of the position of region on the front and do not possess navigation bridge and be configured at above-mentioned goods The above-mentioned residential area at the rear of thing canyon, then as cargo facility room will inhabitation from the movement between product tank, utilization Area movably sets so fairly simple configuration change rearward to than cargo facility room.Particularly, on the bow portion does not have In the case of having the place that residential area is set, residential area can be configured in the case where not making the length of ship.In addition, not The setting place of cargo facility room can be ensured on the upper deck of cargo area and on the bow can not ensure setting for residential area in portion In the case of putting place, the configuration is more effective.

Also, because the residential area on the engine room of stern-side does not possess navigation bridge, therefore the residential area Height it is relatively low, so the residential area vibration reduce, thus, it is not necessary to, can be corresponding for the steel of vibrationproof countermeasure Ground increases load weight.Also, the height step-down of the residential area, influence caused by the wind pressure in being thus tethered at tail off, so It can make to be tethered at and be diminished with assembling product, can correspondingly increase load weight.In addition, chimney height also step-down, so can subtract Few chimney uses material, can correspondingly increase load weight.

For example, in the trial-ray method for the LNG ship that pay load is 70000DWT or so, due to no longer needing vibrationproof pair Plan steel, steel can be reduced about 100t or so.In addition, chimney can reduce about 10t or so using material.

If moreover, in the above-mentioned floating body structure for possessing liquefied gas storage equipment, after above mentioned goods canyon Side possesses region more than any one being equipped with cofferdam, vacant lot, fuel oil drum, water pot, matches somebody with somebody at the rear in the region Above-mentioned residential area is equipped with, then due to the presence in the region, cargo facility room is abutted with residential area, therefore even in goods In the case of gas leakage is generated in thing canyon, the danger in the gas intrusion residential area of the leakage can be also reduced.

Or if in the above-mentioned floating body structure for possessing liquefied gas storage equipment, after above mentioned goods canyon Side possesses engine room and is provided projectingly portion, the engine room be provided projectingly portion by a part for above-mentioned engine room than upper deck to On configure with being provided projectingly, the rear that portion is provided projectingly in the engine room is configured with above-mentioned residential area, then due to the engine Room is provided projectingly the presence in portion, cargo facility room is abutted with residential area, therefore produced in cargo facility room In the case of gas leakage, the danger in the gas intrusion residential area of the leakage can be also reduced.

Or if in the above-mentioned floating body structure for possessing liquefied gas storage equipment, after above mentioned goods canyon Side, possesses and is configured with as the Machine Room in the region for being different from above-mentioned engine room or the region of the one party in warehouse or both sides, Above-mentioned residential area is configured with the rear in the region, then due to the presence in the region, cargo facility room is abutted with residential area , therefore in the case of generating in cargo facility room gas leakage, can also reduce the gas intrusion of the leakage Danger in residential area.In addition, air adjusting apparatus is configured in the Machine Room（Air-conditioning）, oil pressure unit etc..

If in the above-mentioned floating body structure for possessing liquefied gas storage equipment, in the upper of the downside of above mentioned goods canyon The front portion of engine room is stated, is configured with and possesses cofferdam, vacant lot, fuel oil drum, water pot, fuel oil shifting pump, ballast pump, ballasting Region more than any one in water treatment facilities, then space can be set between engine room and cargo area, in the future The region is disposed in from the fuel gas pipe arrangement of cargo facility room, so as to generate gas leakage in cargo facility room In the case of, it can also reduce the danger in the gas intrusion engine room of the leakage.

Or if in the above-mentioned floating body structure for possessing liquefied gas storage equipment, under above mentioned goods canyon Following region is configured with side and the top of above-mentioned engine room, the region is equipped with cofferdam, vacant lot, fuel oil drum, water pot In any one more than, then space can be set between cargo facility room and engine room, therefore even in cargo facility In the case of gas leakage is generated in room, the danger in the gas intrusion engine room of the leakage can be also reduced.

If in the above-mentioned floating body structure for possessing liquefied gas storage equipment, configured in the inside of above mentioned goods canyon Have the flange or valve of the fuel gas pipe arrangement for being directed to main frame, then easily cause the leakage of fuel gas flange portion, Valve portion is incorporated in the inside of cargo facility room, thus can reduce engine room internal leakage fuel gas danger, And from cargo facility room to engine room be connected exposure pipe arrangement in leaked fuel gas danger.

Moreover, as the above-mentioned floating body structure for possessing liquefied gas storage equipment, it is contemplated that possessing liquid gas storage Deposit equipment liquefied gas carrier, using liquid gas as fuel ship, have regasification plant liquefied gas carrier, Some in float type gas liquefaction system, float type Regasification plant.

Design method for floating body structure that realize purpose as described above, to possess liquefied gas storage equipment is The design method of following floating body structures for possessing liquefied gas storage equipment, this possesses the floating body structure of liquefied gas storage equipment The divine force that created the universe has the cargo area for being equipped with the product tank formed by the liquefied gas at low temp tank of MOSS types, and in the cargo area Rear has engine room, and some or all of residential area are arranged on upper deck, it is characterised in that this possesses The design method of the floating body structure of liquefied gas storage equipment has：Tank design process, make total carrying of above mentioned goods tank Volume is 60000m³Above 90000m³Hereinafter, and by the structural strength of above mentioned goods tank and carry above mentioned goods tank goods The structural strength in thing cabin is designed to relative to LNG or ethane or ethene or LPG structural strength；Vessel designs work Sequence, hull construction is designed in the case of following 3 kinds fortune respectively and navigated：LNG is equipped with the whole of above mentioned goods tank Situation；Ethane, ethene or LPG situation are equipped with the whole of above mentioned goods tank；It is or hybrid in above mentioned goods tank Multiple situations in LNG, ethane, ethene, LPG；And room configuration design process, the rear in above mentioned goods region and on State some or all places configuration cargo facility room of the upside of engine room.

In other words, especially can it is hybrid in the case of, the product tanks of MOSS types carries to cope with thermal contraction with high The design of lotus, so as to meet the reply of the extremely low temperature to LNG, and disclosure satisfy that to hyperbaric ethane or ethene or The LPG reply stowed.The liquefied gas carrier carries out the conveying of the liquefied gas at low temp such as LNG, ethane, ethene, LPG, both It can be used relative to each liquid gas as special purpose ship, also, liquefying plant, gas treatment are set by additional as needed Device, also turn into the structure that can also be used as multiple gases carrier, the multiple gases carrier can be according to liquefied gas The species of body changes loading.

In the design method of the above-mentioned floating body structure for possessing liquefied gas storage equipment, it is configured to, is set in above-mentioned tank Count in process, make the adiabatic specification of above mentioned goods tank as relative to the minimum goods of the delivery temperature loaded in predetermined goods Adiabatic specification and design.

In the design method of the above-mentioned floating body structure for possessing liquefied gas storage equipment, if being configured to, above-mentioned tank is set Meter process include by above mentioned goods tank be designed to the carrying number of above mentioned goods tank be 3, each tank volume be 20000m³With Upper 30000m³Following tank volume determines process, then can efficiently design following liquefied gas carriers, liquid gas fortune Defeated ship can make tank number keep higher transfer efficiency for 3, and can efficiency carry out well when middle scale conveys A small amount of unloading for being located in of consumption and navigate by water.

In the design method of the above-mentioned floating body structure for possessing liquefied gas storage equipment, set if being configured to above-mentioned hull Meter process includes following existing tank and utilizes process：Will have 125000m³Above 135000m³Following above mentioned goods tank was both Premised on the above mentioned goods tank of some LNG ships is pulled down and carried, hull construction is matched with to the above-mentioned goods of above-mentioned existing LNG ship Thing tank designs, then need not redesign the product tank of MOSS types, can efficiently design and possess liquefied gas storage equipment Floating body structure.

In the design method of the above-mentioned floating body structure for possessing liquefied gas storage equipment, if being configured to that there is following tank Periphery design process：Handling concetrated pipe is configured at one between each tank of above mentioned goods tank or several or whole, should Handling connect the pipe arrangement of land or deepwater handling facilities side with concetrated pipe, then can efficiently design and possess liquefied gas as follows The floating body structure of body storage facilities, the floating body structure for possessing liquefied gas storage equipment possess：Handling concetrated pipe, increase The matching with land or deepwater handling facilities side is added；And goods Machine Room, path space can be ensured in left and right, And make 1 layer to 2 layers building construction and suppress to set height, reduce wind pressure resistance, and decline center of gravity.

According to the floating body structure and its design method that possess liquefied gas storage equipment of the present invention, by the way that goods is set Standby room is configured at the upside of engine room, and makes cargo facility room from the product tank that rearmost end is moved between product tank At rear, in order to it is that the liquid gas such as natural gas are used and used as fuel, from cargo facility room to engine room Main frame high pressure fuel gas pipe arrangement at, its laying length can be made to shorten, so the leakage of gases at high pressure can be mitigated The danger brought.

Accompany with this, cargo facility room is moved to goods from the configuration of the cargo facility room between the product tank of prior art At the rear of object area, thus, in the structure of the present invention, can eliminate space storage cargo facility room between product tank this One limitation, can increase cargo facility room, and the space where the original cargo facility room between product tank is emptying, so energy The handling facilities that enough ensure to set additional handling concetrated pipe etc. additional, the cabin of addition, addition large-scale assembling product field Institute.

Further, since navigation bridge is configured at the liquefied gas tank position on the front than forefront, therefore height Higher liquefied gas tank will not turn into the obstacle that Qian Fang lookouts are carried out from navigation bridge, can ensure that front regards well Open country, so can make to sail ship raising.

In addition, using the teaching of the invention it is possible to provide the following floating body structure for possessing liquefied gas storage equipment：It is not only LNG, additionally it is possible to will The multiple gases such as ethane or ethene are using conveying in region or closely convey come efficiently transportation of liquefied gas, and have energy Enough functions of being freighted and unloaded at multiple ports.

Brief description of the drawings

Fig. 1 is the liquefied gas carrier for showing schematically the 1st embodiment involved in the present invention（Liquefied as possessing The illustration of one of the floating body structure of gas storage facility）Structure side view.

Fig. 2 is the top view of the structure for the liquefied gas carrier for showing schematically Fig. 1.

Fig. 3 is the side view of the structure for the liquefied gas carrier for showing schematically the 2nd embodiment involved in the present invention Figure.

Fig. 4 is the top view of the structure for the liquefied gas carrier for showing schematically Fig. 3.

Fig. 5 is the side view of the structure for the liquefied gas carrier for showing schematically the 3rd embodiment involved in the present invention Figure.

Fig. 6 is the top view of the structure for the liquefied gas carrier for showing schematically Fig. 5.

Fig. 7 is the side view of the structure for the liquefied gas carrier for showing schematically the 4th embodiment involved in the present invention Figure.

Fig. 8 is the top view of the structure for the liquefied gas carrier for showing schematically Fig. 7.

Fig. 9 is the side view of the structure for the liquefied gas carrier for showing schematically the 5th embodiment involved in the present invention Figure.

Figure 10 is the top view of the structure for the liquefied gas carrier for showing schematically Fig. 9.

Figure 11 is the floating body structure for possessing liquefied gas storage equipment for showing schematically embodiment involved in the present invention The figure of the structure of the design method of the divine force that created the universe.

Figure 12 is the side view of the structure for the liquefied gas carrier for showing schematically prior art.

Figure 13 is the top view of the structure for the liquefied gas carrier for showing schematically Figure 12.

Embodiment

Hereinafter, referring to the drawings, to the floating body structure for possessing liquefied gas storage equipment of embodiment involved in the present invention The divine force that created the universe and its design method illustrate.Possess the floating body structure of the liquefied gas storage equipment as this, there is liquid gas Cargo ship, the ship for possessing liquid gas fuel tank, the floating body structure for possessing liquid gas fuel tank or there is liquefied gas Floating body structure of body storage facilities etc., but here as possess the floating body structure of liquefied gas storage equipment, to possess goods Illustrated exemplified by the liquefied gas carrier of thing tank, the product tank by MOSS types spherical liquefied gas at low temp tank shape Into.

But the invention is not restricted to the liquefied gas carrier, it can also apply to liquid gas transport in addition Ship, the ship for possessing liquid gas fuel tank, the floating body structure for possessing liquid gas fuel tank or with liquid gas storage Deposit the floating body structure that floating body structure of equipment etc. possesses liquefied gas storage equipment.

In addition, the floating body structure for possessing liquefied gas storage equipment be liquefied gas carrier, using liquid gas as The ship of fuel, in the case of possessing the ship of liquid gas fuel tank, it is in navigation when usual, but is possessing liquid gas storage The floating body structure for depositing equipment is that possess the floating body structure of liquid gas fuel tank or have liquefied gas storage equipment In the case of floating body structure, using autonomous navigation come navigation only when going to marine setting place.

In addition, in the present invention, liquefied gas tank, liquid gas fuel tank are the spherical low-temperature liquid gas by MOSS types The product tank that body tank is formed, below, on structural strength, is illustrated by object of ethene, but in the feelings using ethane as object , also can be of the invention by the way that liquid specific gravity to be replaced with to 0.55 and applications of ethane from the 0.57 of ethene under condition.And then if enter The amendment of row appropriate boiling point, proportion, then also can be to other liquefied gas at low temp application present invention comprising LPG.

On thermal insulation, using LNG as object, the goods minimum as the delivery temperature loaded in predetermined goods, with ethene , also can be by the way that delivery temperature be answered from subzero 162 DEG C of LNG replace with ethene subzero 104 DEG C in the case of for object With the present invention.If, also can be to other low-temperature liquid gas comprising LPG moreover, carry out the amendment of appropriate delivery temperature The body application present invention.

Moreover, as shown in Figure 1 and Figure 2, the liquefied gas carrier 1A of the 1st embodiment involved in the present invention by Hull bottom 2, shipboard portion 3 and upper deck 4 are surrounded around hull, the cargo area R1 with product tank 11 are configured with, in the goods Object area R1 rear, in other words, storage sustainer is configured with the stern-side of hull（It is not shown）, auxiliary equipment starts Machine room 5.Moreover, the propeller 6 of navigation is configured with the propeller shaft rearward extended from the engine room 5, behind Side is configured with rudder 7.

In addition, possess some or all of navigation bridge 8a residential area 8（It is in Fig. 1 and Fig. 2 structure All）It is arranged on the upper deck 4 in fore portion.In addition, being provided with chimney 9 on engine room 5 on the quarter, the chimney 9 is used Discharged in gas will be discharged caused by the engine in engine room 5 into air.

In addition, in the cargo area R1 than engine room 5 on the front, in order to store liquid gas, alow 2 goods is provided with Be configured with product tank 11 in the cargo compartment 10 at thing Ceiling 2a double bottom, but herein, the product tank 11 be by referred to as The tank that the spherical liquefied gas at low temp tank of MOSS type tanks is formed, a part for the product tank 11 project upwards than upper deck 4, should Product tank is arranged to 3 ground arrangements of fore-and-aft direction previous column in hull.

Moreover, the total carrying volume for making 3 liquefied gas at low temp tanks is 60000m³Above 90000m³Hereinafter, make The tank volume of each of the product tank 11 is 20000m³Above 30000m³Below.Thus, the quantity for making product tank 11 is 3 And keep higher transfer efficiency, and as in the middle scale of liquid gas, closely convey in the good liquefied gas of efficiency Body cargo ship.Navigate by water, can realize therefore, it is possible to efficiently carry out a small amount of unloading that the consumption when middle scale conveys is located in High efficiency in middle scale conveying.

In addition, in product tank 11, the low temperature of MOSS types that is not susceptible to rock, can be conveyed with half cargo condition is employed Liquefied gas tank, so can solve the problem that the film-type that prior art can be carried out because what liquefied gas liquid was brought rocks problem Fortune boat under the tank half cargo condition that can not be carried out in the liquefied gas carrier of tank because rocking, can be carried out at multiple ports A small amount of unloading.

In addition, product tank 11 has LNG heat radiating constructions and formed.In other words, there is temperature when coping with conveying The LNG heat radiating constructions for subzero 162 DEG C are spent, being consequently formed the ethene for being subzero 104 DEG C relative to temperature during conveying also has The heat radiating construction of effect.

At the same time, especially can carry out it is hybrid in the case of, be set to make the structural strength of the product tank 11 to allow The structural strength of the carrying of ethene.In other words, the structural strength on the product tank 11, liquid specific gravity during conveying are larger Will be because（Factor）, so be configured to, relative to LNG and ethene conveying when liquid specific gravity in larger ethene liquid Proportion 0.57（In addition, it is 0.55 in the case of ethane）With structural strength.In addition, form relative to the different LNG of proportion Respective full load condition and the intensity of half cargo condition can be also tackled with both ethene.Thus, the energy in the product tank 11 Enough carry both LNG and ethene.

In addition, being configured to, make the structural strength of cargo compartment 10 of the carrying product tank 11 as the carrying for allowing ethene Structural strength.Thus, it is configured to the intensity for making the structural strength of cargo compartment 10 turn into the full load condition for also coping with ethene.

Also, on hull construction, make following such hull construction：Support the product tank 11 and the hull of navigation Intensity has sufficient intensity in temperature for tackling LNG, in addition, it is corresponding with ethene in load and with sufficiently it is whole Body intensity.

At the same time, on hull, it is configured to, endurance is transported in the case of following 3 kinds, possesses respectively sufficiently for navigation Freeboard and the reconstitution properties relative to lateral inclination：The lighter LNG of proportion situation is equipped with the whole of product tank 11； The situation of the heavier ethene of proportion is equipped with the whole of product tank 11；Or hybrid LNG and second in product tank 11 The situation of alkene.

Thus, it is configured to, in the case of the lighter LNG of proportion is carried, can also ensure that required for navigating by water Drinking water, in addition, in the case of the heavier ethene of proportion is carried, it can also ensure that the required freeboard of navigation and recovery Performance（Stability）, and it is configured to, when the hybrid different LNG of proportion and ethene, can also makes the trim of hull （Fore-and-aft tilt）As be suitable for navigation trim.In other words, it is configured to following state, proportion is lighter only carrying In the case of LNG, in the state of only carrying the heavier ethene of proportion, also have in the case of hybrid LNG and ethene, all Be able to ensure that sufficient stability and safely navigation.These structures are by ensuring the capacity of ballast tank and setting water ballast The configuration of tank and hull shape, and can fully be formed with known prior art.

It is exhausted by the LNG in the product tank 11 of MOSS types, product tank 11 according to the liquefied gas carrier 1A of said structure Thermotectonics, the structural strength of product tank 11 of ethene, ethene cargo compartment 10 structural strength, cope with LNG and second The hull construction and ballast water systems of both alkene and the combination of hull shape, and turning into holds total carrying of product tank 11 Product is 60000m³Above 90000m³The liquefied gas carrier of following middle scale, can carry multiple gases and efficiency is good Ground dispenses.

In other words, by conveying scale, the product tank 11 of MOSS types, tackle multiple gases tank structural strength, goods Drinking water, trim, the combination ensured of stability when the structural strength in thing cabin, the structural strength of hull construction and navigation, energy Enough to provide following such liquefied gas carrier, the liquefied gas carrier can be efficiently defeated by the liquid gas of middle scale Send, and cope with and freighted and unloaded at multiple ports, conveying 60000m can be engaged in³Above 90000m³Following liquefaction The middle scale liquefaction gas conveying of gas.

In other words, liquefied gas carrier 1A carries out the conveying of the liquefied gas at low temp such as LNG, ethane, ethene, LPG, It can be used relative to each liquid gas as special purpose ship, also, by being configured to set up liquefying plant, gas treatment equipment Or additional configuration as needed, and as the structure that can also be used as multiple gases carrier, the multiple gases carrier It can be changed according to the purposes of liquid gas and freighted.

If moreover, by being configured to cargo facility room 12 being configured at cargo area R1 rear, and make stern-side Cargo facility room 12, the current road 17 that is connected with the navigation bridge 8a of bow-side of engine room 5 for exposed path or The path of person's enclosing region, the position than 4 top portion of upper deck is configured at, in other words, be set to fore portion（Fore）Boat Extra large bridge 8a and stern-side（Stern）Cargo facility room 12, engine room 5 is with being for example configured to the round-the-clock of enclosing region The state that the current road 17 of the outdoor passage of type connects, then can be between navigation bridge 8a and the grade of cargo facility room 12 through frequentation Come.In addition, here, the road 17 of passing through is configured into the top in hull center and product tank 11, but can also be set to pass through this Road 17 is configured at the state of hull starboard or the side of larboard product tank 11.

Also, in the liquefied gas carrier 1A of the 1st embodiment, before residential area 8 is configured in cargo area R1 Side, is in other words position than foremost product tank 11 on the front.If in the structure shown here to be configured with boat on residential area 8 Extra large bridge 8a state is formed, then navigation bridge 8a is configured in the position on the front of product tank 11 than most preceding position Put, therefore product tank 11 will not turn into the obstacle that Qian Fang lookouts are carried out from navigation bridge 8a, can ensure that front regards well Open country, so sailing ship raising.Particularly, product tank 11 is being arranged to macrostructure thing upper as spherical MOSS type tanks In the case of being protruded on deck 4, due to the higher macrostructure thing of the height, it is difficult to the visual field is ensured, so using the structure Effect becomes big.If in addition, configuring bridge dodger 8b on navigation bridge 8a, make the monitoring of the side of the hull of entrance and clearance etc. Easily.

In addition, from the viewpoint of the field of front vision, compared with navigation bridge is configured at into the situation of stern-side, in ship In the case of rostral, navigation bridge 8a height can be made relatively low, in addition, not making the superstructure thing for being configured at stern-side Necessity uprised, so can lower suppress the overall height of ship.As a result, head room diminishes, so liquid gas The scope that cargo ship 1A can be navigated by water expands, it is possible to increase liquefied gas carrier 1A versatility.For example, head room becomes It is low, thus, it is possible to relative to important ports more than two ports（For example, the Meng Tuoyier ports of France, the Ai Fuleite ports in the U.S. Deng）Enter a port.

In other words it is the product tank than rearmost end also, cargo facility room 12 is configured in cargo area R1 rear 11 position rearward, and it is configured in some or all of the upside of engine room 5（It it is one in Fig. 1 and Fig. 2 Point）On, be in other words engine room 5 surface.In other words, be configured to, the underface of cargo facility room 12 it is all Engine room 5.In addition, the cargo facility room 12 is configured to than chimney 9 on the front.

Thus, the cargo facility room 12 of equipment for transferring fuel gas will be accommodated from the product tank 11 of prior art Configuration each other becomes to be configured at main frame, the engine room of generating equipment being accommodated with using fuel gas in the present invention 5 surface, so the fuel gas pipe arrangement that will be discharged from cargo facility room 12 can not only be used to be stretched out from cargo facility room To the outside structure that once engine room of underface guides backward, the fuel that will be discharged from cargo facility room 12 can be also used The structure that gas pipe directly guides to the engine room 5 in underface.

In addition, can for using liquid gas as fuel use from cargo facility room 12 to the master of engine room 5 The laying length of the fuel gas pipe arrangement of the high pressure of machine is arranged to shorter state.The length of the fuel gas pipe arrangement shortens, by This, correspondingly, the possibility step-down of the leakage of gases at high pressure, can mitigate dangerous as caused by the leakage of gases at high pressure.And And the scope of corrosion protection countermeasure also diminishes, the wire guide setting of power supply electric wire etc. is also easy.

In addition, the fuel gas pipe arrangement of high pressure is not passed through the side of residential area 8, so when just in case gas leaks, Also the fuel gas intrusion residential area 8 of danger or the fuel gas of high pressure can be made directly to make the injured possibility of crew Significantly reduce.

Accompany with this, it is not necessary to the space for configuring cargo facility room 12 is ensured between product tank 11, therefore Can turn into the state of miscellaneous equipment of being configured between product tank 11, it can be ensured that additional handling facilities, addition are set Cabin, addition large-scale assembling product place.

Thus, between product tank 11, the place of the assembling product such as handling concetrated pipe 13, gangway ladder can be set to become Greatly.In other words, handling can not only be respectively arranged at a position with concetrated pipe 13 at two sides of a ship, additionally it is possible in two portions Arbitrary site's configuration more than position and in whole positions between product tank 11.

Can solve the problem that in the prior art, cargo facility room 12, institute are configured with because of the narrow between product tank 11 1 layer segment of cargo facility room 12 is made into 3 floor construction, cargo facility room 12 as path space forwards, backwards to have to Wind pressure resistance increase, height of C.G. uprise this problem, cargo facility room 12 can be existed using the whole width of upper deck 4 Left and right ensures path space, and makes 1 layer of construction to 2 layers of building and suppress to set height, and thereby, it is possible to reduce blast Resistance and lower the center of gravity.

And then the height for being arranged at the cargo facility room 12 on the engine room 5 of stern-side is relatively low, so being not required to It is used for the steel of the vibrationproof countermeasure of cargo facility room 12, can correspondingly increases load weight.And then the top structure of the stern The height of the divine force that created the universe is relatively low state, thus influences to tail off as caused by the wind pressure in being tethered at, so being tethered at assembling product energy Enough diminish, can correspondingly increase load weight.In addition, chimney height is also relatively low state, so chimney 9 can be reduced Using material, it can correspondingly increase load weight.

In addition, it is configured with deck tank if in the upside of the cargo facility room 12（It is not shown）Or liquid gas fuel tank 11a state, then the upside of cargo facility room 12 can effectively be utilized, and can be set to make liquid gas fuel tank 11a with The shorter state of fuel gas pipe arrangement between the equipment class of cargo facility room 12.

If in addition, it is configured to be configured with the convex of the fuel gas pipe arrangement for being directed to main frame in the inside of cargo facility room 12 The state of edge or valve, then the fuel gas pipe arrangement of high pressure will not expose current such outside to crew, can reduce Due to injured danger caused by the leakage of the gas of fuel gas pipe arrangement, by increasing capacitance it is possible to increase security.

Next, reference picture 3 and Fig. 4, enter to the liquefied gas carrier 1B of the 2nd embodiment involved in the present invention Row explanation.Liquefied gas carrier 1B is in the front for maintaining the fore building for including navigation bridge 8a to be configured at cargo area R1 State and residential area 8 is configured to the rear this point of cargo facility room 12 and the liquefied gas carrier of the 1st embodiment 1A is different.According to liquefied gas carrier 1B structure, to be arranged to the movement along with cargo facility room 12, by residential area 8 are moved to the so fairly simple configuration change in position than cargo facility room 12 rearward.Particularly, on the bow portion does not have In the case of having the place that residential area is set, residential area can be configured in the case where not making the length of ship.In addition, not The setting place of cargo facility room can be ensured on the upper deck 4 of cargo area and on the bow can not ensure residential area in portion In the case of setting place, the configuration is more effective.

Also, the height for the residential area 8 being arranged on the engine room 5 of stern-side is relatively low, therefore residential area 8 Vibration is reduced, thus, it is not necessary to for the steel of vibrationproof countermeasure, can correspondingly increase load weight.Also, residential area 8 Height step-down, influence caused by the wind pressure in being thus tethered at tail off, diminished so can make to be tethered at assembling product, can be corresponding Ground increases load weight.In addition, chimney height also step-down, so can reduce chimney uses material, can correspondingly increase Load weight.

Therefore, it is possible to suppress the height of residential area 8, it can obtain and improve the versatility of ship by suppressing head room Effect, suppress for the reinforcement weight and being tethered at of vibrationproof countermeasure increased with assembling product weight load weight effect and The effect for preventing the pseudomorphism of radar from beating in.

Next, reference picture 5 and Fig. 6, enter to the liquefied gas carrier 1C of the 3rd embodiment involved in the present invention Row explanation.Liquefied gas carrier 1C is configured in cargo facility room 12 in region 14 and includes navigation bridge 8a inhabitation This point is different from the liquefied gas carrier 1B of the 2nd embodiment between area 8.

The region 14 is configured to, more than any one being equipped with cofferdam, vacant lot, fuel oil drum, water pot The state in region, or as a part for engine room 5 is projected upwards than upper deck 4 be configured set engine room protrude The state of setting unit, or as the Machine Room in region or the one party in warehouse or both sides configured in addition to engine room 5 The state in region.In addition, on the Machine Room, air adjusting apparatus is configured with（Air-conditioning）, oil pressure unit etc..

Thus, by region 14, it is not required to be set to make the adjacent state in cargo facility room 12 and residential area 8, so In cargo facility room 12, in the case where gas leakage occurs, it can also reduce what the gas of the leakage invaded into residential area 8 It is dangerous.

Next, reference picture 7 and Fig. 8, enter to the liquefied gas carrier 1D of the 4th embodiment involved in the present invention Row explanation.Liquefied gas carrier 1D possesses in the front portion of the engine room 5 of the downside of cargo facility room 12 and has engine room 5 Front region 15, the region 15 in the front of the engine room 5 possesses cofferdam, vacant lot, fuel oil drum, water pot, fuel oil More than any one in shifting pump, ballast pump, ballast water processing device, the liquid gas of this point and the 2nd embodiment is transported Defeated ship 1B is different.

According to the structure, it can be set to be configured with the state in space between engine room 5 and cargo area R1, will come from The fuel gas pipe arrangement of cargo facility room 12 is disposed in the region 15 in the front of the engine room 5, thus in cargo facility room 12 In the case of middle generation gas leakage, the danger that the gas of the leakage invades into engine room 5 can be also reduced.

Next, reference picture 9 and Figure 10, to the liquefied gas carrier 1E of the 5th embodiment involved in the present invention Illustrate.Liquefied gas carrier 1E possesses on the top of engine room 5 in the downside of cargo facility room 12 and has engine The region 16 of the top of room 5, the region 16 of the top of the engine room 5 possess in cofferdam, vacant lot, fuel oil drum, water pot More than any one, this point is different from the liquefied gas carrier 1B of the 2nd embodiment.

According to the structure, it can be set to be configured with the state in space between cargo facility room 12 and engine room 5, therefore In the case of gas leakage is generated in cargo facility room 12, the gas of the leakage can be also reduced to engine room 5 The danger of interior intrusion.

According to liquefied gas carrier 1A~1E of said structure, by the way that cargo facility room 12 is configured at into engine room 5 Upside, turn into cargo facility room 12 from the shape at the rear of product tank 11 that rearmost end is moved between product tank 11 State, so as to in order to it is that the liquid gas such as natural gas are used and used as fuel, from cargo facility room 12 to engine For the fuel gas pipe arrangement of the high pressure of the main frame of room 5, the state for making its laying length shorten can be set as, so can mitigate The danger that the leakage of the fuel gas of high pressure is brought.

Accompany with this, by the movement of cargo facility room 12, the space being accommodated between product tank 11 can be eliminated In this limitation, turn into the state for increasing cargo facility room 12, and the original goods that can turn between product tank 11 be set For the emptying state in the space where room 12, additional handling are set to be set with the additional handling such as concetrated pipe so being able to ensure that The place of the cabin of the addition of standby, other purposes, the large-scale assembling product of addition.

Next, setting to the floating body structure for possessing liquefied gas storage equipment of embodiment involved in the present invention Meter method illustrates.The design method of the liquefied gas carrier is the floating body construction for possessing as follows liquefied gas storage equipment The design method of thing, the floating body structure for possessing liquefied gas storage equipment, which has, to be equipped with by the low-temperature liquid gas of MOSS types The cargo area for the product tank 11 that body tank is formed, and has engine room at the rear of the cargo area, and by residential area 8 It is some or all to be arranged on upper deck 4, here with liquefied gas carrier 1（Common name as 1A~1E uses 1）For Example illustrates.

As shown in figure 11, the process of the design method, i.e. the design process S1 of liquefied gas carrier 1 is configured to have Tank design process S10, tank periphery design process S20, vessel designs process S30 and room configuration design process S40.

In tank design process S10, the total carrying volume for making product tank 11 is 60000m³Above 90000m³Below. At the same time, especially make it possible to it is hybrid in the case of, by the structural strength of product tank 11 and carry product tank 11 goods The structural strength in thing cabin 10 is designed to the structural strength relative to ethene.In addition, in tank design process S10, make goods The adiabatic specification of tank 11 designs as the adiabatic specification relative to the minimum goods of the delivery temperature loaded in predetermined goods.

In other words, product tank 11 is copes with thermal contraction and the design of top load, so as to meet the pole to LNG The reply of low temperature, and disclosure satisfy that the hyperbaric reply stowed to ethene.The liquefied gas carrier 1 progress LNG, It the conveying of the liquid gas such as LPG, ethane, ethene, can also use, also, pass through as special purpose ship relative to each liquid gas It is additional as needed that liquefying plant, gas treatment equipment are set, and as the knot that can also be used as multiple gases carrier Structure, the multiple gases carrier can change according to the species of liquid gas freights.

And, it is preferred that tank design process S10 is configured to include tank volume decision process S11, and the tank volume determines Process S11 makes the carrying number of product tank 11 be 3, makes each tank volume be 20000m³Above 30000m³Design below Tank, thereby, it is possible to design following such liquefied gas carrier 1：Can make the quantity of product tank 11 for 3 keep compared with High transfer efficiency, and can efficiency carry out a small amount of unloading that the consumption when middle scale conveys is located in well and navigate by water.

In addition, for tank periphery design process S20, for following such design：Between each tank of product tank 11 At one or several or whole（In Fig. 1 at the whole between each tank）Configure handling concetrated pipe 13, handling collection Close the pipe arrangement that pipe 13 connects land or deepwater handling facilities side.

Thereby, it is possible to efficiently design the liquefied gas carrier 1 for possessing handling concetrated pipe 13, the handling concetrated pipe 13 add the matching with land or deepwater handling facilities side.In addition, tank periphery design process S20 can also be formed To be included in tank design process S10 or vessel designs process S30.

Moreover, in vessel designs process S30, hull construction is designed in the case of following 3 fortune respectively and navigated： LNG situation is equipped with the whole of product tank 11；The situation of ethene is equipped with the whole of product tank 11；Or in goods Hybrid LNG and ethene situation in thing tank 11.

Moreover, in vessel designs process S30, it is preferred that being configured to, which includes existing tank, utilizes process S31, and this is existing Tank utilizes process S31 to have such as 4 or 5 125000m³Above 135000m³The product tank 11 of following MOSS types that Premised on the product tank 11 of the existing LNG ship of sample is carried with pulling down and recycle, hull construction is matched with to existing LNG ship Product tank 11 design.Thus, it is no longer necessary to redesign the product tank 11 of MOSS types, can efficiently design liquid gas Cargo ship 1.

In addition, in room configuration design process S40, one in cargo area R1 rear and the upside of engine room 5 Divide or configure cargo facility room 12 at whole.In addition, configure goods at some or all places of the upside of the engine room 5 Thing canyon 12 is the situation and engine room that a part for the ceiling for representing engine room 5 turns into the ground of cargo facility room 12 5 ceiling all as cargo facility room 12 ground situation.Thus, in the case where product tank 11 is 3, by by goods Thing canyon 12 is configured at the upside of engine room 5, and handling are respectively become with the configuration place of concetrated pipe 13 in two sides of a ship Two positions, correspondingly produce the free degree of the handling with the configuration place of concetrated pipe 13.

According to the floating body structure 1 and its design method that possess liquefied gas storage equipment of said structure, by by goods Thing canyon 12 is configured at the upside of engine room 5, so as to which cargo facility room 12 is last from being moved between product tank 11 The position at the rear of the product tank 11 at end, in order to it is that the liquid gas such as natural gas are used and used as fuel, from goods For thing canyon 12 to the fuel gas pipe arrangement of the high pressure of the main frame of engine room 5, its laying length can be made to shorten, so The danger that the leakage of gases at high pressure is brought can be mitigated.

Accompany with this, cargo facility room 12 is moved from the configuration of the cargo facility room 12 between the product tank 11 of prior art The position at cargo area R1 rear is moved, so as to which in the structure of the present invention, the space between product tank 11 can be eliminated Middle this limitation of storage cargo facility room 12, can increase cargo facility room 12, and the original goods between product tank 11 is set Space where standby room 12 is emptying, sets the handling facilities of the additional grade addition of handling concetrated pipe 13 so being able to ensure that, chases after The cabin that adds, the place of the large-scale assembling product of addition.

In addition, using the teaching of the invention it is possible to provide the following floating body structure for possessing liquefied gas storage equipment：It is not only LNG, additionally it is possible to will The multiple gases such as ethane or ethene are using conveying in region or closely convey efficiently transportation of liquefied gas, and have can In the function that multiple ports are freighted and unloaded.

Industrial utilizability

According to the floating body structure and its design method that possess liquefied gas storage equipment of the present invention, can make to liquefy It is that gas is used and used as fuel, from cargo facility room to the main frame of engine room high pressure fuel gas pipe arrangement Laying length shortens, so can mitigate danger caused by the leakage of gases at high pressure, accompanies with this, for cargo facility room For eliminate this limitation in the space being accommodated between product tank, can increase cargo facility room, and product tank it Between original cargo facility room where space it is emptying, it can be ensured that additional handling facilities, the cabin of addition, addition are set The place of large-scale assembling product, therefore the liquefied gas carrier for possessing liquefied gas storage equipment can be used in, possess liquefaction The ship of gas fuel tank, the floating body structure for possessing liquid gas fuel tank or floating with liquefied gas storage equipment Body structure etc. possesses the floating body structure and its design method of liquefied gas storage equipment.

Description of reference numerals

1A~1E, 1X liquefied gas carriers（Possesses the floating body structure of liquefied gas storage equipment）

2 hull bottom

2a goods Ceilings

3 shipboard portions

4 upper decks

5 engine rooms

6 propellers

7 rudders

8 residential areas

8a navigation bridges

9 chimneys

10 cargo compartments

11 product tanks

11a liquid gas fuel tanks

12 cargo facility rooms

13 handling concetrated pipes

14 regions

The region in the front of 15 engine rooms

The region of the top of 16 engine rooms

17 current roads

R1 cargo areas.

Claims

1. a kind of floating body structure for possessing liquefied gas storage equipment, this possesses the floating body structure of liquefied gas storage equipment With cargo area, and there is engine room at the rear of the cargo area, and by some or all of residential area It is arranged on upper deck, above mentioned goods region is equipped with the product tank formed by the liquefied gas at low temp tank of MOSS types, above-mentioned tool The floating body structure of standby liquefied gas storage equipment is characterised by,

Cargo facility is configured with some or all places of the rear in above mentioned goods region and the upside of above-mentioned engine room In the state of room,

Total carrying volume of above mentioned goods tank is 60000m³Above 90000m³Hereinafter,

Also, the structural strength of above mentioned goods tank and carry above mentioned goods tank cargo compartment structural strength be allow LNG, Or the structural strength of ethane or ethene or LPG carrying,

Also, hull construction transports endurance in the case of following 3 kinds, possesses sufficient freeboard respectively and relative to transverse direction for navigation Inclined reconstitution properties：LNG situation is equipped with the whole of above mentioned goods tank；It is equipped with the whole of above mentioned goods tank The situation of ethane or ethene or LPG；It is or a variety of in hybrid LNG, ethane, ethene, LPG in above mentioned goods tank Situation.

2. the floating body structure as claimed in claim 1 for possessing liquefied gas storage equipment, it is characterised in that

Above mentioned goods tank has goods heat radiating construction.

3. the floating body structure as claimed in claim 1 or 2 for possessing liquefied gas storage equipment, it is characterised in that

The carrying number of above mentioned goods tank is 3, and the tank volume of each is 20000m³Above 30000m³Below.

4. possessing the floating body structure of liquefied gas storage equipment as claimed any one in claims 1 to 3, its feature exists In,

One between each tank of above mentioned goods tank or several or whole places are configured with handling concetrated pipe, handling collection The pipe arrangement of land or deepwater handling facilities side can be connected by closing pipe.

5. the floating body structure for possessing liquefied gas storage equipment as any one of Claims 1-4, its feature exist In,

Possess the fore building including navigation bridge for being configured at position than above mentioned goods region on the front or above-mentioned residential area.

6. the floating body structure for possessing liquefied gas storage equipment as any one of Claims 1-4, its feature exist In,

Possess the fore building including navigation bridge for being configured at position than above mentioned goods region on the front and do not possess boat Extra large bridge and it is configured at the above-mentioned residential area at the rear of above mentioned goods canyon.

7. the floating body structure for possessing liquefied gas storage equipment as any one of claim 1 to 6, its feature exist In being following any situations：

At the rear of above mentioned goods canyon, possess any one being equipped with cofferdam, vacant lot, fuel oil drum, water pot Region above, is configured with above-mentioned residential area at the rear in the region,

Or at the rear of above mentioned goods canyon, possess and project upwards a part for above-mentioned engine room than upper deck The engine room for being configured configuration is provided projectingly portion, is provided projectingly in the engine room at the rear in portion and is configured with above-mentioned inhabitation Area,

Or at the rear of above mentioned goods canyon, possesses the machine being configured with as the region for being different from above-mentioned engine room The region of the one party or both sides in tool room or warehouse, is configured with above-mentioned residential area at the rear in the region.

8. the floating body structure for possessing liquefied gas storage equipment as any one of claim 1 to 7, its feature exist In,

At the front portion of the above-mentioned engine room of the downside of above mentioned goods canyon, it is configured with and possesses cofferdam, vacant lot, fuel oil Region more than any one in tank, water pot, fuel oil shifting pump, ballast pump, ballast water processing device.

9. the floating body structure for possessing liquefied gas storage equipment as any one of claim 1 to 7, its feature exist In,

Be configured with following region at the downside of above mentioned goods canyon and the top of above-mentioned engine room, the region be equipped with every More than any one in cabin, vacant lot, fuel oil drum, water pot.

10. possessing the floating body structure of liquefied gas storage equipment as claimed in any one of claims 1-9 wherein, its feature exists In,

The flange or valve of the fuel gas pipe arrangement for being directed to main frame are configured with the inside of above mentioned goods canyon.

11. the floating body structure for possessing liquefied gas storage equipment as any one of claim 1 to 10, its feature exist In,

The floating body structure for possessing liquefied gas storage equipment is liquefied gas carrier, the ship using liquid gas as fuel It is a certain in oceangoing ship, the liquefied gas carrier with regasification plant, float type gas liquefaction system, float type Regasification plant It is individual.

12. a kind of design method for the floating body structure for possessing liquefied gas storage equipment, this possesses liquefied gas storage equipment Floating body structure there is cargo area, and there is engine room at the rear of the cargo area, and by the one of residential area Some or all of to be arranged on upper deck, above mentioned goods region is equipped with the goods formed by the liquefied gas at low temp tank of MOSS types Thing tank, the design method of the above-mentioned floating body structure for possessing liquefied gas storage equipment are characterised by having：

Tank design process, the total carrying volume for making above mentioned goods tank are 60000m³Above 90000m³Hereinafter, and by above-mentioned goods The structural strength of thing tank and carry above mentioned goods tank cargo compartment structural strength be designed to relative to LNG or ethane or The structural strength of person's ethene or LPG；

Vessel designs process, hull construction is designed as, and can transport boat respectively in the case of following 3 kinds：In above mentioned goods tank LNG situation is equipped with whole；Ethane or ethene or LPG situation are equipped with the whole of above mentioned goods tank； Or multiple situations in above mentioned goods tank in hybrid LNG, ethane, ethene, LPG；And

Room configures design process, at the rear in above mentioned goods region and some or all places of the upside of above-mentioned engine room Configure cargo facility room.

13. the design method of the floating body structure as claimed in claim 12 for possessing liquefied gas storage equipment, its feature exist In,

In above-mentioned tank design process, make the adiabatic specification of above mentioned goods tank as relative to the conveying temperature loaded in predetermined goods Spend the adiabatic specification of minimum goods and design.

14. the design method of the floating body structure for possessing liquefied gas storage equipment as described in claim 12 or 13, it is special Sign is,

Above-mentioned tank design process includes tank volume and determines process, and the tank volume determines that above mentioned goods tank is designed to make by process The carrying number for stating product tank is 3, makes each tank volume be 20000m³Above 30000m³Below.

15. the design side of the floating body structure for possessing liquefied gas storage equipment as any one of claim 12 to 14 Method, it is characterised in that

Above-mentioned vessel designs process utilizes process including existing tank, and the existing tank utilizes process to have 125000m³More than 135000m³Premised on the above mentioned goods tank of the existing LNG ship of following above mentioned goods tank is pulled down and carried, make hull construction The above mentioned goods tank of above-mentioned existing LNG ship is matched with to design.

16. the design side of the floating body structure for possessing liquefied gas storage equipment as any one of claim 12 to 15 Method, it is characterised in that

With tank periphery design process, the tank periphery design process one or several between each tank of above mentioned goods tank or Handling concetrated pipe is configured at all, the handling connect the pipe arrangement of land or deepwater handling facilities side with concetrated pipe.