WO2024183444A1 - Low-temperature storage liquid cargo tank structure and ship - Google Patents
Low-temperature storage liquid cargo tank structure and ship Download PDFInfo
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- WO2024183444A1 WO2024183444A1 PCT/CN2024/071047 CN2024071047W WO2024183444A1 WO 2024183444 A1 WO2024183444 A1 WO 2024183444A1 CN 2024071047 W CN2024071047 W CN 2024071047W WO 2024183444 A1 WO2024183444 A1 WO 2024183444A1
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- Prior art keywords
- liquid cargo
- cavity
- tank body
- tank
- cargo tank
- Prior art date
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- 239000007788 liquid Substances 0.000 title claims abstract description 146
- 238000002955 isolation Methods 0.000 claims abstract description 38
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 2
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Definitions
- the present application relates to the technical field related to shipbuilding, and in particular to a low-temperature storage liquid cargo tank structure and a ship.
- Liquefied gas carriers are special ships used to transport various cryogenic liquid cargoes such as liquefied petroleum gas, liquefied natural gas, and green ammonia. They have also experienced a development process from small, simple, and single to large, complex, and diversified. As one of the core technologies in the development of liquefied gas carriers, the containment system has the main function of ensuring the safety of internal liquid cargoes through the barrier layer while taking into account good insulation capabilities.
- the purpose of the present application is to provide a low-temperature storage liquid cargo tank structure and a ship, which can meet the loading requirements of different types of liquid cargoes.
- the present application provides a low-temperature storage liquid cargo tank structure, which includes a hull and a liquid cargo tank installed in the hull, the liquid cargo tank includes a first tank body, a second tank body, and a first insulation layer, the second tank body is arranged inside the first tank body, and a first cavity for storing liquid cargo is formed between the first tank body and the second tank body; the first insulation layer is located in the first cavity and surrounds and covers the second tank body; a second cavity for storing liquid cargo is provided in the second tank body; wherein the second cavity is not connected to the first cavity.
- the shell of the first cabin body includes a prismatic airtight structure with a polygonal cross-section formed by a plurality of planes
- the shell of the second cabin body includes a cylindrical airtight structure with a circular cross-section formed by a plurality of curved surfaces.
- the second cabin body includes a longitudinal bulkhead, which extends from the bottom to the top of the second cabin body and divides the second cavity into two sub-cavities.
- the second cabin body further includes a plurality of reinforcement rings and a second profile that are spaced apart along the inner wall of the shell; a first profile is disposed in the first cabin body, and the first profile is disposed at a position corresponding to that of the second profile.
- the first cabin body includes a plurality of transverse bulkheads, which extend vertically from the inner wall of the shell of the first cabin body to the first isolation layer, and divide the first cavity into a plurality of sub-cavities, and the plurality of sub-cavities in the first cavity are interconnected via a plurality of through holes arranged on the transverse bulkheads.
- the liquid cargo tank also includes a liquid accumulation trough and a diversion channel, wherein the diversion channel is arranged between the first isolation layer and the second cabin body, and separates the first isolation layer from the second cabin body; the liquid accumulation trough is arranged at the bottom of the first cabin body, passes through the bottom shell of the first cabin body, and is connected with the diversion channel.
- the liquid accumulation tank includes a plurality of enclosures and a plurality of baffles, and a second isolation layer, the plurality of enclosures and the bottom of the first cabin body form a square trough structure, the second isolation layer is located at the bottom of the trough structure, and the plurality of baffles are horizontally arranged above the second isolation layer and vertically connected to the enclosures.
- a plurality of support assemblies are further provided at the bottom of the liquid cargo tank, and the support assemblies include supports and support pads.
- the support pads are located on the supports and abut against the outer wall of the shell of the first cabin body.
- the support is made by splicing a plurality of brackets, and a third isolation layer is filled between the brackets.
- the present application also provides a ship, comprising a low-temperature storage liquid cargo tank structure according to any one of the above-mentioned embodiments.
- the present invention has at least the following beneficial effects:
- the present application provides a low-temperature storage liquid cargo tank structure and a ship, comprising a first tank body, a second tank body, and a first isolation layer.
- the second tank body is arranged inside the first tank body, so that the shell of the second tank body divides the inside of the first tank body into two spaces that can store liquid cargo and are independent of each other, namely, a first cavity and a second cavity, wherein the second cavity is located inside the second tank body.
- the first isolation layer is wrapped around the shell of the second tank body.
- the first isolation layer is placed outside the tank body to avoid heat transfer between the two different liquid cargoes packed in the first cavity and the second cavity, meeting the requirement of loading different types of cryogenic liquid cargoes in the same cargo tank at the same time.
- the first isolation layer can also serve as a splash screen to prevent the different liquid cargoes packed in the first cavity and the second cavity from mixing with each other.
- FIG1 is a schematic top view of a cryogenic storage liquid cargo tank structure according to an embodiment of the present application.
- FIG2 is a schematic cross-sectional view of a cryogenic storage liquid cargo tank structure according to an embodiment of the present application.
- FIG. 3 is a partial enlarged schematic diagram of area B in FIG. 2 .
- connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements.
- connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements.
- connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements.
- first and second are only used to distinguish the description and cannot be understood as indicating or implying relative importance
- a low-temperature storage liquid cargo tank structure comprising a hull 100 and a liquid cargo tank 200 installed in the hull 100.
- the liquid cargo tank 200 comprises a first hull 210, a second hull 220, and a first isolation layer 230.
- the first hull 210 and the second hull 220 are both hollow cavity structures.
- the second hull 220 is arranged inside the first hull 210 so that the shell of the second hull 220 separates the first hull 210 and the second hull 220 into two spaces that can store liquid cargo and are independent of each other, namely, a second cavity 220a located in the second hull 220 and a first cavity 210a located between the second hull 220 and the first hull 210.
- the first cavity 210a and the second cavity 220a are not connected, that is, the first cavity 210a and the second cavity 220a can be used to independently load two types of low-temperature liquid cargoes of different materials.
- the first isolation layer 230 is disposed in the first cavity 210a and surrounds the second compartment 220 to further separate the cryogenic liquid cargoes packed in the first cavity 210a and the second cavity 220a.
- the present application surrounds the outer side of the shell of the second cabin 220 with a first isolation layer 230, which can play a role in heat preservation, that is, it can minimize the heat transfer between the two different liquid cargoes packed in the first cavity 210a and the second cavity 220a.
- the liquid cargo tank 200 structure adopted in the present application can not only pack two different liquid cargoes independently, but also avoid the problem of heat transfer between different liquid cargoes.
- the first isolation layer 230 can also serve as a splash screen, that is, when the shell structure of the second cabin 220 is damaged, the first isolation layer 230 can also prevent the different liquid cargoes packed in the first cavity 210a and the second cavity 220a from mixing with each other.
- the shell of the first hull 210 includes a prismatic airtight structure with a polygonal cross section composed of multiple planes, which is equivalent to a B-type prismatic independent liquid cargo tank structure.
- the shell of the second hull 220 includes a cylindrical airtight structure with a circular cross section composed of multiple curved surfaces, which is equivalent to a C-type liquid cargo tank structure.
- the cylindrical structural design of the second hull 220 fully utilizes the advantage of the curved panel's stronger pressure resistance, further improving the pressure resistance of the second hull 220, thereby solving the technical problem that the conventional B-type liquid cargo tank cannot withstand high pressure.
- the second hull 220 includes a longitudinal bulkhead 221.
- the material of the longitudinal bulkhead 221 must meet the liquid tightness requirements, and the longitudinal bulkhead 221 is arranged to extend from the bottom to the top of the second hull 220 to divide the second cavity 220a into two sub-cavities. Swaying may even increase the risk of ship navigation under adverse shipping conditions.
- the longitudinal bulkhead 221 is provided in the second hull 220, which can be used to adjust the swaying frequency of the liquid cargo in the second hull 220, thereby reducing the swaying amplitude of the liquid cargo.
- the setting of the longitudinal bulkhead 221 is closely related to the type of the hull 100 and the design of the liquid cargo tank 200, that is, when theoretical calculations can prove that the swaying frequency of the liquid cargo will not affect the safe navigation of the hull 100, the longitudinal bulkhead 221 in the second hull 220 can also be cancelled.
- the second cabin 220 further includes a plurality of reinforcement rings 222 and second profiles 223 spaced apart along the inner wall of the shell.
- the second profiles 223 and the reinforcement rings 222 combined with the second cabin 220 shell composed of the curved panel structure, can further improve the high pressure resistance of the second cabin 220, and further, the second cabin 220 can be designed as a main screen wall structure with high pressure resistance.
- a first profile 212 is provided in the first cabin 210, and the first profile 212 is provided at a position corresponding to the second profile 223, thereby ensuring the continuity and stability of the structure of the liquid cargo tank 200.
- the number of the first profile 212 and the second profile 223 includes a plurality, and all are "T" profiles. Among them, the "T-shaped" top of the first profile 212 corresponds to the "T-shaped bottom" of the second profile 223.
- the first cabin 210 includes a plurality of transverse bulkheads 211, which are arranged inside the second cavity 220a and extend vertically from the inner wall of the shell of the first cabin 210 to the first isolation layer 230, so as to divide the first cavity 210a into a plurality of sub-cavities, so as to adjust the swaying frequency of the liquid cargo in the first cabin 210, thereby reducing the swaying amplitude of the liquid cargo.
- the transverse bulkhead 211 is also provided with a plurality of through holes 213 arranged at intervals, so that the plurality of sub-cavities separated by the transverse bulkhead 211 are interconnected, ensuring that the liquid cargo can flow normally in different sub-cavities of the first cavity 210.
- Each through hole 213 is designed to be a manhole size, which plays a role in reducing the weight of the first cabin 210.
- each through hole 213 is arranged between any two adjacent first profiles 212, and can also play the role of a passage hole, which is convenient for the staff to enter and exit, so as to facilitate the subsequent inspection and maintenance of the liquid cargo tank 200.
- the location of the transverse bulkhead 211 corresponds to the location of the reinforcement ring 222 to ensure the continuity of the force inside the liquid cargo tank 200 and enhance the stability of the structure of the liquid cargo tank 200.
- the cargo tank 200 further includes a liquid sump 240 and a flow channel 240a.
- the flow channel 240a is disposed between the first isolation layer 230 and the second cabin 220, and separates the first isolation layer 230 from the second cabin 220.
- the liquid sump 240 is disposed at the bottom of the first cabin 210, and passes through the bottom shell of the first cabin 210, and is connected to the flow channel 240a.
- IGC CODE International Code for According to the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk
- the B-type tank should consider the situation where the inner tank of the main barrier (i.e., the outer shell of the second cabin 220) is damaged, resulting in liquid cargo leakage. That is to say, when the outer shell of the second cabin 220 is damaged, the cryogenic liquid cargo may leak from the cracks of the damaged shell of the second cabin 220, and flow from the guide channel 240a to the liquid storage tank 240 under the action of gravity.
- the liquid accumulating tank 240 includes a plurality of coamings 241 and a plurality of baffles 242, and a second insulating layer 243.
- the plurality of coamings 241 and the bottom of the first cabin 210 form a square trough structure.
- the second insulating layer 243 is laid at the bottom of the trough structure and adopts a prefabricated size of heat-insulating plate material.
- the second insulating layer 243 can insulate the liquid cargo in the liquid accumulating tank 240 to prevent the liquid cargo from being vaporized due to the increase in temperature, resulting in an increase in the internal pressure of the liquid cargo tank 200.
- the plurality of baffles 242 are horizontally arranged above the second insulating layer 243, corresponding to the position of the first cabin 210, and vertically connected to the coamings 241.
- the first isolation layer 230 also extends to cover part of the outer wall of the enclosure 241 of the liquid storage tank 240 to further insulate the liquid cargo in the liquid storage tank 240.
- the volume of the liquid storage tank 240 can be determined based on the leakage amount obtained by theoretical calculation or low-temperature test. At the same time, considering that the ship is generally designed to be in a stern-tilted posture, the ship will produce 6 directions of movement when sailing at sea. From the perspective of economy and practicality, the design number of liquid storage tanks 240 is generally selected as 1, which is placed at the tail of the first cabin 210. When the estimated value of the leakage amount is too large and exceeds the volume requirement of a single liquid storage tank 240, another liquid storage tank 240 can be added at the bow of the first cabin 210 to increase the design safety threshold of the liquid cargo tank 200.
- a plurality of sensor devices such as temperature sensors or pressure sensors, may be provided in the liquid accumulating tank 240 to monitor the temperature and pressure state in the liquid accumulating tank 240 in real time.
- sensor devices such as temperature sensors or pressure sensors
- the liquid cargo in the liquid cargo tank 200 leaks into the liquid accumulating tank 240 through the diversion channel 240a, it will inevitably cause the pressure and temperature in the liquid accumulating tank 240 to change.
- the staff can quickly deal with the liquid cargo leakage according to the alarm signal sent by the sensor device to avoid the occurrence of safety accidents.
- each support assembly 250 may include a support 251 and a support pad 252, the support pad 252 is located on the support 251 and abuts against the outer wall of the shell of the first hull 210, so as to transfer the gravity load of the cargo tank 200 to the support 251, and then transfer it to the hull 100 through the support 251.
- the plurality of support assemblies 250 cooperate with each other to support the bottom of the cargo tank 200 together.
- the support of the bottom of the liquid cargo tank 200 by the support assembly 250 at least needs to include supporting the bottom flat edge of the liquid cargo tank 200 and two lateral flat edges adjacent to the flat edge.
- the support assembly 250 can not only be used to support the liquid cargo tank 200, but also prevent the lateral slippage of the liquid cargo tank 200 caused by thermal expansion and contraction or severe shaking of the hull 100.
- the number of support assemblies 250 can be flexibly configured according to the load weight of the liquid cargo tank 200, and usually should not be less than 4. Their arrangement positions correspond to the positions of the reinforcement rings 222 of the liquid cargo tank 200 to ensure the force continuity of the liquid cargo tank 200 under the support of the support assemblies 250, thereby increasing the safety of the liquid cargo tank 200.
- the support pad 252 may include a first support pad 252a and a second support pad 252b, wherein the first support pad 252a is disposed at a position corresponding to the planar portion of the prismatic outer wall of the first pod 210, and the second support pad 252b is disposed at an edge portion of the prismatic outer wall of the first pod 210 and is in contact with it.
- the edge of the prismatic outer wall of the first pod 210 transitions through an arc, so that the contact surface between the second support pad 252b and the first pod 210 (the upper surface of the second support pad 252b) is disposed as an arc surface to increase the fit between the second support pad 252b and the first pod 210 shell.
- the lower surface of the second support pad 252b is also an arc surface with a circular opening, and corresponds to the corner position of the support 251, thereby improving the force uniformity of the contact area between the second support pad 252b and the support 251.
- the support 251 is made by splicing a plurality of brackets, and a third insulating layer 253 is filled between the brackets.
- the third insulating layer 253 is filled between the upper and lower brackets of the support 251 using a foamed insulating layer to prevent the low temperature of the cargo tank 200 from being transferred to the hull 100 when the hull 100 is loaded with low-temperature liquid cargo, causing low-temperature brittle failure of the transfer structure, and affecting the safety of the hull 100.
- the bottom of the liquid collection tank 240 should directly abut against the support 251.
- the second support pad 252b close to the liquid collection tank 240 should avoid the liquid collection tank 240 and abut against the bottom shell of the first cabin 210 to ensure the support stability of the support assembly 250 at the position of the liquid collection tank 240.
- the present application also provides a ship, comprising a low-temperature storage liquid cargo tank structure according to any one of the above-mentioned embodiments.
- the present application provides a low temperature storage liquid cargo tank structure and a ship, comprising a first tank body 210, a second tank body 220, and a first isolation layer 230.
- a low temperature storage liquid cargo tank structure and a ship comprising a first tank body 210, a second tank body 220, and a first isolation layer 230.
- the shell of the second cabin 220 divides the interior of the first cabin 210 into two spaces that can store liquid cargo and are independent of each other, namely the first cavity 210a and the second cavity 220a, wherein the second cavity 220a is located inside the second cabin 220.
- the first isolation layer 230 is wrapped around the outer shell of the second cabin 220 to avoid heat transfer between the two different liquid cargoes packed in the first cavity 210a and the second cavity 220a, thereby meeting the simultaneous loading requirements of different types of low-temperature liquid cargoes in the same cargo tank.
- the first isolation layer 230 can also serve as a splash screen to prevent the different liquid cargoes packed in the first cavity 210a and the second cavity 220a from mixing with each other.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
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- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present application provides a low-temperature storage liquid cargo tank structure and a ship. The liquid cargo tank comprises a first tank body, a second tank body and a first isolation layer. The second tank body is arranged in the first tank body, so that the housing of the second tank body divides the interior of the first tank body into two spaces which can store liquid cargos and are independent of each other, namely a first cavity and a second cavity, wherein the second cavity is located in the second tank body. The first isolation layer wraps the outer side of the housing of the second tank body in a surrounding mode, so that the heat transfer between two different liquid cargos separately contained in the first cavity and the second cavity can be effectively avoided, and the requirements of simultaneously loading different types of low-temperature liquid cargos in a same liquid cargo tank are met. Moreover, when the housing structure of the second tank body is damaged, the first isolation layer can also serve as a splash-proof screen wall, so that the situation where different liquid cargos separately contained in the first cavity and the second cavity are mixed with each other is prevented.
Description
本申请涉及船舶建造相关技术领域,尤其涉及一种低温存储液货舱结构及船舶。The present application relates to the technical field related to shipbuilding, and in particular to a low-temperature storage liquid cargo tank structure and a ship.
液化气船是用于运输液化石油气、液化天然气、绿氨等各种低温液货的专用船舶,也经历了从小型、简单、和单一到目前的大型、复杂和多样化的发展历程。围护系统作为液化气船研制的核心技术之一,其主要功能在于如何通过屏壁层确保内部液货安全性的同时,兼顾良好的绝热能力。Liquefied gas carriers are special ships used to transport various cryogenic liquid cargoes such as liquefied petroleum gas, liquefied natural gas, and green ammonia. They have also experienced a development process from small, simple, and single to large, complex, and diversified. As one of the core technologies in the development of liquefied gas carriers, the containment system has the main function of ensuring the safety of internal liquid cargoes through the barrier layer while taking into account good insulation capabilities.
传统的液化气船通常仅设计有一个货舱,相应的也就只能每次装载一种液货,在具有多种不同液货装载需求的任务,单一种类的液货舱装载已经不再能够满足现有液化气船的市场需求,也不符合液货运输的经济效益。然而,不同液货保持的液化温度不同,当在液化气船上装载不同种类的液货时,首先需要解决的便是如何防止不同液货之间热传递的问题。Traditional liquefied gas ships are usually designed with only one cargo hold, and can only load one type of liquid cargo at a time. In missions with multiple different liquid cargo loading requirements, loading a single type of liquid cargo hold can no longer meet the market demand of existing liquefied gas ships, nor is it in line with the economic benefits of liquid cargo transportation. However, different liquid cargoes maintain different liquefaction temperatures. When loading different types of liquid cargoes on a liquefied gas ship, the first problem that needs to be solved is how to prevent heat transfer between different liquid cargoes.
因此,如何提供一种低温存储液货舱结构及船舶,能够满足对不同种类液货的装载需求,成为本领域亟需解决的问题。Therefore, how to provide a low-temperature storage liquid cargo tank structure and a ship that can meet the loading requirements of different types of liquid cargoes has become an urgent problem to be solved in this field.
发明内容Summary of the invention
本申请的目的是提供一种低温存储液货舱结构及船舶,其能够满足对不同种类液货的装载需求。The purpose of the present application is to provide a low-temperature storage liquid cargo tank structure and a ship, which can meet the loading requirements of different types of liquid cargoes.
第一方面,本申请提供一种低温存储液货舱结构,其包括船体和安装在所述船体内的液货舱,所述液货舱包括第一舱体,第二舱体,以及第一隔离层,所述第二舱体设置于所述第一舱体的内部,并在所述第一舱体和第二舱体之间形成存储液货的第一空腔;所述第一隔离层位于所述第一空腔内,并将所述第二舱体环绕包覆;所述第二舱体内设有存储液货的第二空腔;其中,所述第二空腔与第一空腔不相连通。In a first aspect, the present application provides a low-temperature storage liquid cargo tank structure, which includes a hull and a liquid cargo tank installed in the hull, the liquid cargo tank includes a first tank body, a second tank body, and a first insulation layer, the second tank body is arranged inside the first tank body, and a first cavity for storing liquid cargo is formed between the first tank body and the second tank body; the first insulation layer is located in the first cavity and surrounds and covers the second tank body; a second cavity for storing liquid cargo is provided in the second tank body; wherein the second cavity is not connected to the first cavity.
在一种可能的实施方式中,所述第一舱体的壳体包括由多个平面构成的一个截面为多边形的棱柱状气密性结构,所述第二舱体的壳体包括由多个曲面构成的一个截面为圆形的圆柱状气密性结构。
In a possible implementation, the shell of the first cabin body includes a prismatic airtight structure with a polygonal cross-section formed by a plurality of planes, and the shell of the second cabin body includes a cylindrical airtight structure with a circular cross-section formed by a plurality of curved surfaces.
在一种可能的实施方式中,所述第二舱体包括纵向舱壁,所述纵向舱壁自所述第二舱体的底部贯穿延伸至顶部,并将所述第二空腔间隔为两个分腔。In a possible implementation, the second cabin body includes a longitudinal bulkhead, which extends from the bottom to the top of the second cabin body and divides the second cavity into two sub-cavities.
在一种可能的实施方式中,所述第二舱体还包括沿壳体内壁间隔设置的多个加强环和第二型材;所述第一舱体内设有第一型材,所述第一型材的设置位置与所述第二型材相对应。In a possible implementation, the second cabin body further includes a plurality of reinforcement rings and a second profile that are spaced apart along the inner wall of the shell; a first profile is disposed in the first cabin body, and the first profile is disposed at a position corresponding to that of the second profile.
在一种可能的实施方式中,所述第一舱体包括多个横向舱壁,多个所述横向舱壁自所述第一舱体的壳体内壁垂直延伸至所述第一隔离层,并将所述第一空腔间隔为多个分腔,所述第一空腔内的多个分腔通过设置在所述横向舱壁上的多个通孔相互连通。In a possible embodiment, the first cabin body includes a plurality of transverse bulkheads, which extend vertically from the inner wall of the shell of the first cabin body to the first isolation layer, and divide the first cavity into a plurality of sub-cavities, and the plurality of sub-cavities in the first cavity are interconnected via a plurality of through holes arranged on the transverse bulkheads.
在一种可能的实施方式中,所述液货舱还包括积液槽和导流通道,所述导流通道设置于所述第一隔离层与所述第二舱体之间,并将所述第一隔离层与所述第二舱体相间隔;所述积液槽设置于所述第一舱体底部,并贯穿所述第一舱体的底部壳体,与所述导流通道相连通。In a possible embodiment, the liquid cargo tank also includes a liquid accumulation trough and a diversion channel, wherein the diversion channel is arranged between the first isolation layer and the second cabin body, and separates the first isolation layer from the second cabin body; the liquid accumulation trough is arranged at the bottom of the first cabin body, passes through the bottom shell of the first cabin body, and is connected with the diversion channel.
在一种可能的实施方式中,所述积液槽包括多个围板和多个挡板,以及第二隔离层,多个所述围板与所述第一舱体的底部围成一个方形的槽状结构,所述第二隔离层位于所述槽状结构的底部,多个所述挡板水平设置于所述第二隔离层的上方,并与所述围板垂直连接。In a possible embodiment, the liquid accumulation tank includes a plurality of enclosures and a plurality of baffles, and a second isolation layer, the plurality of enclosures and the bottom of the first cabin body form a square trough structure, the second isolation layer is located at the bottom of the trough structure, and the plurality of baffles are horizontally arranged above the second isolation layer and vertically connected to the enclosures.
在一种可能的实施方式中,所述液货舱的底部还设有多个支撑组件,所述支撑组件包括支座和支撑垫,所述支撑垫位于所述支座上,并与所述第一舱体的壳体外壁相抵接。In a possible embodiment, a plurality of support assemblies are further provided at the bottom of the liquid cargo tank, and the support assemblies include supports and support pads. The support pads are located on the supports and abut against the outer wall of the shell of the first cabin body.
在一种可能的实施方式中,所述支座通过多个肘板拼接制成,所述肘板之间填充设有第三隔离层。In a possible implementation manner, the support is made by splicing a plurality of brackets, and a third isolation layer is filled between the brackets.
第二方面,本申请还提供一种船舶,包括采用上述任意一种实施方式所述的低温存储液货舱结构。In a second aspect, the present application also provides a ship, comprising a low-temperature storage liquid cargo tank structure according to any one of the above-mentioned embodiments.
与现有技术相比,本申请的有益效果至少如下:Compared with the prior art, the present invention has at least the following beneficial effects:
本申请提供了低温存储液货舱结构及船舶,包括第一舱体,第二舱体,以及第一隔离层。通过将第二舱体设置于第一舱体的内部,以使第二舱体的壳体将第一舱体内部间隔为两个能够存储液货且又相互独立的空间,即第一空腔和第二空腔,其中,第二空腔位于第二舱体内部。将第一隔离层环绕包覆在第二舱体的壳
体外侧,以避免分装在第一空腔和第二空腔内的两种不同液货之间的热传递,满足了同一液货舱对不同种类低温液货的同时装载需求。同时,在第二舱体的壳体结构出现损坏时,第一隔离层还能够作为防溅屏壁,起到防止分装在第一空腔和第二空腔内的不同液货相互混合的情况发生。The present application provides a low-temperature storage liquid cargo tank structure and a ship, comprising a first tank body, a second tank body, and a first isolation layer. The second tank body is arranged inside the first tank body, so that the shell of the second tank body divides the inside of the first tank body into two spaces that can store liquid cargo and are independent of each other, namely, a first cavity and a second cavity, wherein the second cavity is located inside the second tank body. The first isolation layer is wrapped around the shell of the second tank body. The first isolation layer is placed outside the tank body to avoid heat transfer between the two different liquid cargoes packed in the first cavity and the second cavity, meeting the requirement of loading different types of cryogenic liquid cargoes in the same cargo tank at the same time. At the same time, when the shell structure of the second tank body is damaged, the first isolation layer can also serve as a splash screen to prevent the different liquid cargoes packed in the first cavity and the second cavity from mixing with each other.
为了更清楚地说明本申请实施例的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,应当理解,以下附图仅示出了本申请的某些实施例,因此不应被看作是对范围的限定,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他相关的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
图1为根据本申请实施例示出的一种低温存储液货舱结构俯视示意图。FIG1 is a schematic top view of a cryogenic storage liquid cargo tank structure according to an embodiment of the present application.
图2为根据本申请实施例示出的一种低温存储液货舱结构截面示意图。FIG2 is a schematic cross-sectional view of a cryogenic storage liquid cargo tank structure according to an embodiment of the present application.
图3为根据图2中区域B的局部放大示意图。FIG. 3 is a partial enlarged schematic diagram of area B in FIG. 2 .
图示说明:Illustration Description:
100船体;200液货舱;210第一舱体;210a第一空腔;211横向舱壁;212第一型材;213通孔;220第二舱体;220a第二空腔;221纵向舱壁,222加强环;223第二型材;230第一隔离层;240积液槽;240a导流通道;241围板;242挡板;243第二隔离层;250支撑组件;251支座;252支撑垫;252a第一支撑垫;252b第二支撑垫;253第三隔离层。100 hull; 200 cargo tank; 210 first hull; 210a first cavity; 211 transverse bulkhead; 212 first profile; 213 through hole; 220 second hull; 220a second cavity; 221 longitudinal bulkhead, 222 reinforcement ring; 223 second profile; 230 first isolation layer; 240 liquid sump; 240a guide channel; 241 coaming; 242 baffle; 243 second isolation layer; 250 support assembly; 251 support; 252 support pad; 252a first support pad; 252b second support pad; 253 third isolation layer.
以下通过特定的具体实施例说明本申请的实施方式,本领域技术人员可由本说明书所揭露的内容轻易地了解本申请的其他优点与功效。本申请还可以通过另外不同的具体实施方式加以实施或营业,本申请中的各项细节也可以基于不同观点与应用,在没有背离本申请的精神下进行各种修饰或改变。The following describes the implementation of the present application through specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or operated through other different specific implementations, and the details in the present application can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application.
在本申请的描述中,需要说明的是,除非另有明确的规定和限定,术语“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。此外,术语“第一”和“第二”等仅用于区分描述,而不能理解为指示或暗示相对重要性。
In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first" and "second" are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
根据本申请的一个方面,提供了一种低温存储液货舱结构,包括船体100和安装在船体100内的液货舱200。参见图1,该液货舱200包括第一舱体210,第二舱体220,以及第一隔离层230。其中,第一舱体210和第二舱体220均为内部中空的空腔型结构,通过将第二舱体220设置于第一舱体210的内部,以使第二舱体220的壳体将第一舱体210和第二舱体220间隔为两个能够存储液货且相互独立的空间,即位于第二舱体220内的第二空腔220a和位于第二舱体220与第一舱体210之间的第一空腔210a。第一空腔210a与第二空腔220a之间不相连通,也就是说,第一空腔210a和第二空腔220a可以用于独立装载不同材料两种低温液货。第一隔离层230则设置在第一空腔210a内,并将第二舱体220环绕包覆,以进一步将分装在第一空腔210a和第二空腔220a内的低温液货相间隔。According to one aspect of the present application, a low-temperature storage liquid cargo tank structure is provided, comprising a hull 100 and a liquid cargo tank 200 installed in the hull 100. Referring to FIG1 , the liquid cargo tank 200 comprises a first hull 210, a second hull 220, and a first isolation layer 230. The first hull 210 and the second hull 220 are both hollow cavity structures. The second hull 220 is arranged inside the first hull 210 so that the shell of the second hull 220 separates the first hull 210 and the second hull 220 into two spaces that can store liquid cargo and are independent of each other, namely, a second cavity 220a located in the second hull 220 and a first cavity 210a located between the second hull 220 and the first hull 210. The first cavity 210a and the second cavity 220a are not connected, that is, the first cavity 210a and the second cavity 220a can be used to independently load two types of low-temperature liquid cargoes of different materials. The first isolation layer 230 is disposed in the first cavity 210a and surrounds the second compartment 220 to further separate the cryogenic liquid cargoes packed in the first cavity 210a and the second cavity 220a.
本领域人员可以知道,不同材料的液货之间保持的低温液化的温度不同,一旦液货蒸发有液态变成气态,会直接导致液货舱200的内压升高,若不能及时处理,可能直接导致液货舱200的结构出现损坏。为了避免不同液货之间出现热传递导致液货气化,影响液货舱200使用安全,本申请在第二舱体220的壳体外侧环绕包覆第一隔离层230,其能起到保温的作用,即可以最大限度的减小分装在第一空腔210a和第二空腔220a内的两种不同液货之间的热传递。也就是说,本申请所采用的液货舱200结构,既能够将两种不同的液货独立分装,还能够避免不同液货之间的热传递问题。与此同时,第一隔离层230还能够作为防溅屏壁,即在第二舱体220的壳体结构出现损坏时,第一隔离层230也能起到防止分装在第一空腔210a和第二空腔220a内的不同液货相互混合的情况发生。Those skilled in the art will know that the low-temperature liquefaction temperatures maintained between liquid cargoes of different materials are different. Once the liquid cargo evaporates from liquid to gas, it will directly cause the internal pressure of the liquid cargo tank 200 to increase. If it cannot be handled in time, it may directly cause damage to the structure of the liquid cargo tank 200. In order to avoid heat transfer between different liquid cargoes that causes the liquid cargo to vaporize and affects the safety of the use of the liquid cargo tank 200, the present application surrounds the outer side of the shell of the second cabin 220 with a first isolation layer 230, which can play a role in heat preservation, that is, it can minimize the heat transfer between the two different liquid cargoes packed in the first cavity 210a and the second cavity 220a. In other words, the liquid cargo tank 200 structure adopted in the present application can not only pack two different liquid cargoes independently, but also avoid the problem of heat transfer between different liquid cargoes. At the same time, the first isolation layer 230 can also serve as a splash screen, that is, when the shell structure of the second cabin 220 is damaged, the first isolation layer 230 can also prevent the different liquid cargoes packed in the first cavity 210a and the second cavity 220a from mixing with each other.
在一种实施方式中,第一舱体210的壳体包括由多个平面构成的一个截面为多边形的棱柱状气密性结构,即相当于B型棱柱式独立液货舱结构。第二舱体220的壳体包括由多个曲面构成的一个截面为圆形的圆柱状气密性结构,即相当于C型液货舱结构。第二舱体220圆柱状的结构设计,充分利用了曲面板抗压能力更强的优势,使第二舱体220的抗压能力得到进一步提高,进而解决了常规B型液货舱无法耐高压的技术问题。In one embodiment, the shell of the first hull 210 includes a prismatic airtight structure with a polygonal cross section composed of multiple planes, which is equivalent to a B-type prismatic independent liquid cargo tank structure. The shell of the second hull 220 includes a cylindrical airtight structure with a circular cross section composed of multiple curved surfaces, which is equivalent to a C-type liquid cargo tank structure. The cylindrical structural design of the second hull 220 fully utilizes the advantage of the curved panel's stronger pressure resistance, further improving the pressure resistance of the second hull 220, thereby solving the technical problem that the conventional B-type liquid cargo tank cannot withstand high pressure.
较佳地,第二舱体220包括纵向舱壁221。纵向舱壁221的材质需满足液体的密性要求,且设置位置自第二舱体220的底部贯穿延伸至顶部,以将第二空腔220a间隔为两个分腔。通常情况下,液货在液货舱200内会随船体100的运输
而晃动,在恶劣的航运条件下甚至会增加船舶航行风险。而在第二舱体220内设置纵向舱壁221,可以用于调整第二舱体220内液货的晃动频率,进而起到减少液货的晃动幅度的作用。需要说明的是,纵向舱壁221的设置与船体100类型以及液货舱200的设计密切相关,即当理论计算可以证明液货的晃动频率对船体100安全航行不会产生影响时,也可以取消在第二舱体220内设置纵向舱壁221。Preferably, the second hull 220 includes a longitudinal bulkhead 221. The material of the longitudinal bulkhead 221 must meet the liquid tightness requirements, and the longitudinal bulkhead 221 is arranged to extend from the bottom to the top of the second hull 220 to divide the second cavity 220a into two sub-cavities. Swaying may even increase the risk of ship navigation under adverse shipping conditions. The longitudinal bulkhead 221 is provided in the second hull 220, which can be used to adjust the swaying frequency of the liquid cargo in the second hull 220, thereby reducing the swaying amplitude of the liquid cargo. It should be noted that the setting of the longitudinal bulkhead 221 is closely related to the type of the hull 100 and the design of the liquid cargo tank 200, that is, when theoretical calculations can prove that the swaying frequency of the liquid cargo will not affect the safe navigation of the hull 100, the longitudinal bulkhead 221 in the second hull 220 can also be cancelled.
在一种实施方式中,第二舱体220还包括沿壳体内壁间隔设置的多个加强环222和第二型材223。通过第二型材223和加强环222,并结合曲面板结构组成的第二舱体220壳体,能够进一步提高第二舱体220的耐高压能力,进而可以将第二舱体220设计为具有耐高压能力的主屏壁结构。In one embodiment, the second cabin 220 further includes a plurality of reinforcement rings 222 and second profiles 223 spaced apart along the inner wall of the shell. The second profiles 223 and the reinforcement rings 222, combined with the second cabin 220 shell composed of the curved panel structure, can further improve the high pressure resistance of the second cabin 220, and further, the second cabin 220 can be designed as a main screen wall structure with high pressure resistance.
较佳地,第一舱体210内设有第一型材212,且第一型材212的设置位置与第二型材223相对应,进而保证液货舱200结构的连续性和稳定性。例如,在本实施例中,第一型材212和第二型材223的数量包括多个,且均为“T”型材。其中,第一型材212的“T型”顶部与第二型材223的“T型底部相对应。Preferably, a first profile 212 is provided in the first cabin 210, and the first profile 212 is provided at a position corresponding to the second profile 223, thereby ensuring the continuity and stability of the structure of the liquid cargo tank 200. For example, in this embodiment, the number of the first profile 212 and the second profile 223 includes a plurality, and all are "T" profiles. Among them, the "T-shaped" top of the first profile 212 corresponds to the "T-shaped bottom" of the second profile 223.
在一种实施方式中,第一舱体210包括多个横向舱壁211,设置在第二空腔220a的内部,自第一舱体210的壳体内壁垂直延伸至第一隔离层230,以将第一空腔210a间隔为多个分腔,以用于调整第一舱体210内液货的晃动频率,进而起到减少液货的晃动幅度的作用。In one embodiment, the first cabin 210 includes a plurality of transverse bulkheads 211, which are arranged inside the second cavity 220a and extend vertically from the inner wall of the shell of the first cabin 210 to the first isolation layer 230, so as to divide the first cavity 210a into a plurality of sub-cavities, so as to adjust the swaying frequency of the liquid cargo in the first cabin 210, thereby reducing the swaying amplitude of the liquid cargo.
较佳地,横向舱壁211上还设有多个间隔设置的通孔213,以使横向舱壁211间隔的多个分腔之间相互连通,保证液货在第一空腔210的不同分腔内能够正常流动。每个通孔213设计为人孔大小,起到了减轻第一舱体210重量的作用,同时,每个通孔213的设置位置位于任意相邻的两个第一型材212之间,还能够起到通道孔的作用,方便工作人员的进出,以便于后续对液货舱200进行检测和维修。Preferably, the transverse bulkhead 211 is also provided with a plurality of through holes 213 arranged at intervals, so that the plurality of sub-cavities separated by the transverse bulkhead 211 are interconnected, ensuring that the liquid cargo can flow normally in different sub-cavities of the first cavity 210. Each through hole 213 is designed to be a manhole size, which plays a role in reducing the weight of the first cabin 210. At the same time, each through hole 213 is arranged between any two adjacent first profiles 212, and can also play the role of a passage hole, which is convenient for the staff to enter and exit, so as to facilitate the subsequent inspection and maintenance of the liquid cargo tank 200.
较佳地,横向舱壁211的设置位置与加强环222的设置位置相对应,以保证液货舱200内部受力的连续性,增强液货舱200结构的稳定性。Preferably, the location of the transverse bulkhead 211 corresponds to the location of the reinforcement ring 222 to ensure the continuity of the force inside the liquid cargo tank 200 and enhance the stability of the structure of the liquid cargo tank 200.
在一种实施方式中,液货舱200还包括积液槽240和导流通道240a,导流通道240a设置于第一隔离层230与第二舱体220之间,并将第一隔离层230与第二舱体220相间隔;积液槽240设置于第一舱体210底部,并贯穿第一舱体210的底部壳体,与导流通道240a相连通。根据IGC CODE(International Code for
the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk;国际散装运输液化气体船舶构造和设备规则)要求,B型舱应考虑主屏壁内舱(即第二舱体220的外壳)破损导致液货泄漏的情况。也就是说,当第二舱体220的外壳出现破损后,低温液货可以从第二舱体220的壳体破损的裂纹处泄漏,在重力的作用下,自导流通道240a流动至积液槽240中。In one embodiment, the cargo tank 200 further includes a liquid sump 240 and a flow channel 240a. The flow channel 240a is disposed between the first isolation layer 230 and the second cabin 220, and separates the first isolation layer 230 from the second cabin 220. The liquid sump 240 is disposed at the bottom of the first cabin 210, and passes through the bottom shell of the first cabin 210, and is connected to the flow channel 240a. According to IGC CODE (International Code for According to the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, the B-type tank should consider the situation where the inner tank of the main barrier (i.e., the outer shell of the second cabin 220) is damaged, resulting in liquid cargo leakage. That is to say, when the outer shell of the second cabin 220 is damaged, the cryogenic liquid cargo may leak from the cracks of the damaged shell of the second cabin 220, and flow from the guide channel 240a to the liquid storage tank 240 under the action of gravity.
较佳地,积液槽240包括多个围板241和多个挡板242,以及第二隔离层243,多个围板241与第一舱体210的底部围成一个方形的槽状结构,第二隔离层243敷设于槽状结构的底部,采用的是预制尺寸的隔热绝缘板材,进而在泄漏的液货自导流通道240a流入积液槽240中时,第二隔离层243能够对积液槽240内液货进行保温,避免此部分液货由于温度升高而气化导致液货舱200内压升高。多个挡板242水平设置于第二隔离层243的上方,与第一舱体210的位置相对应,并与围板241垂直连接。Preferably, the liquid accumulating tank 240 includes a plurality of coamings 241 and a plurality of baffles 242, and a second insulating layer 243. The plurality of coamings 241 and the bottom of the first cabin 210 form a square trough structure. The second insulating layer 243 is laid at the bottom of the trough structure and adopts a prefabricated size of heat-insulating plate material. Then, when the leaked liquid cargo flows into the liquid accumulating tank 240 from the guide channel 240a, the second insulating layer 243 can insulate the liquid cargo in the liquid accumulating tank 240 to prevent the liquid cargo from being vaporized due to the increase in temperature, resulting in an increase in the internal pressure of the liquid cargo tank 200. The plurality of baffles 242 are horizontally arranged above the second insulating layer 243, corresponding to the position of the first cabin 210, and vertically connected to the coamings 241.
较佳地,第一隔离层230还延伸覆盖在积液槽240的围板241的部分外壁上,以进一步对积液槽240内的液货进行保温。需要说明的是,对于积液槽240的容积大小,可以根据理论计算或低温试验得出泄漏量确定。同时,考虑到船舶一般设计为尾倾姿态,船舶在海上航行时,会产生6个方向的运动,从到经济性和实用性的角度出发,积液槽240的设计数量一般选择为1个,放置于第一舱体210的尾部。而当泄漏量的预估值过大并超出单个积液槽240的容积要求时,可在第一舱体210的首部再增设一个积液槽240,以增加液货舱200的设计安全阈度。Preferably, the first isolation layer 230 also extends to cover part of the outer wall of the enclosure 241 of the liquid storage tank 240 to further insulate the liquid cargo in the liquid storage tank 240. It should be noted that the volume of the liquid storage tank 240 can be determined based on the leakage amount obtained by theoretical calculation or low-temperature test. At the same time, considering that the ship is generally designed to be in a stern-tilted posture, the ship will produce 6 directions of movement when sailing at sea. From the perspective of economy and practicality, the design number of liquid storage tanks 240 is generally selected as 1, which is placed at the tail of the first cabin 210. When the estimated value of the leakage amount is too large and exceeds the volume requirement of a single liquid storage tank 240, another liquid storage tank 240 can be added at the bow of the first cabin 210 to increase the design safety threshold of the liquid cargo tank 200.
较佳地,积液槽240内还可以设置多个传感器装置,例如温度传感器或压力传感器等,以对积液槽240内的温度和压力状态进行实时监控。液货舱200内的液货通过导流通道240a泄漏流入积液槽240内时,必然引起积液槽240内压力和温度的变化,工作人员即能够根据传感器装置发出的报警信号迅速对液货泄漏迅速作出处理,避免安全事故的发生。Preferably, a plurality of sensor devices, such as temperature sensors or pressure sensors, may be provided in the liquid accumulating tank 240 to monitor the temperature and pressure state in the liquid accumulating tank 240 in real time. When the liquid cargo in the liquid cargo tank 200 leaks into the liquid accumulating tank 240 through the diversion channel 240a, it will inevitably cause the pressure and temperature in the liquid accumulating tank 240 to change. The staff can quickly deal with the liquid cargo leakage according to the alarm signal sent by the sensor device to avoid the occurrence of safety accidents.
在一种实施方式中,液货舱200的底部还设有多个支撑组件250,每个支撑组件250可以包括支座251和支撑垫252,支撑垫252位于支座251上并与第一舱体210的壳体外壁相抵接,以用于将液货舱200的重力载荷传递至支座251,再通过支座251传递到船体100。也就是说,多个支撑组件250相互配合,共同对液货舱200底部起到支撑的作用。
In one embodiment, a plurality of support assemblies 250 are further provided at the bottom of the cargo tank 200, each support assembly 250 may include a support 251 and a support pad 252, the support pad 252 is located on the support 251 and abuts against the outer wall of the shell of the first hull 210, so as to transfer the gravity load of the cargo tank 200 to the support 251, and then transfer it to the hull 100 through the support 251. In other words, the plurality of support assemblies 250 cooperate with each other to support the bottom of the cargo tank 200 together.
较佳地,支撑组件250对于液货舱200的底部的支撑至少需要包括对液货舱200底部平边以及与平边相邻的两个侧向平边形成支撑。也就是说,支撑组件250不仅能够用于对液货舱200形成支撑,还能够防止液货舱200因热胀冷缩或船体100剧烈晃动等原因产生的侧向滑移的情况发生。Preferably, the support of the bottom of the liquid cargo tank 200 by the support assembly 250 at least needs to include supporting the bottom flat edge of the liquid cargo tank 200 and two lateral flat edges adjacent to the flat edge. In other words, the support assembly 250 can not only be used to support the liquid cargo tank 200, but also prevent the lateral slippage of the liquid cargo tank 200 caused by thermal expansion and contraction or severe shaking of the hull 100.
较佳地,支撑组件250的设置数量可以根据液货舱200的载荷重量灵活配置,通常不应不低于4个,其设置位置与液货舱200加强环222的位置相对应,以保证液货舱200在支撑组件250的支撑下的受力连续性,进而增加液货舱200的安全性。Preferably, the number of support assemblies 250 can be flexibly configured according to the load weight of the liquid cargo tank 200, and usually should not be less than 4. Their arrangement positions correspond to the positions of the reinforcement rings 222 of the liquid cargo tank 200 to ensure the force continuity of the liquid cargo tank 200 under the support of the support assemblies 250, thereby increasing the safety of the liquid cargo tank 200.
在一种实施方式中,支撑垫252可以包括第一支撑垫252a和第二支撑垫252b,第一支撑垫252a对应的设置位置与第一舱体210棱柱状的壳体外壁的平面部分相抵接,第二支撑垫252b则对应设置在第一舱体210棱柱状的壳体外壁的棱边部分并与其相抵接。其中,第一舱体210棱柱状的壳体外壁的棱边通过圆弧过渡,因而第二支撑垫252b与第一舱体210的接触面(第二支撑垫252b上表面)被设置为圆弧面,以增加第二支撑垫252b与第一舱体210壳体的贴合度。同时,第二支撑垫252b的下表面同样为圆弧面,并带有圆形开孔,且与支座251的转角位置相对应,提高第二支撑垫252b与支座251之间的接触区的受力均匀性。In one embodiment, the support pad 252 may include a first support pad 252a and a second support pad 252b, wherein the first support pad 252a is disposed at a position corresponding to the planar portion of the prismatic outer wall of the first pod 210, and the second support pad 252b is disposed at an edge portion of the prismatic outer wall of the first pod 210 and is in contact with it. The edge of the prismatic outer wall of the first pod 210 transitions through an arc, so that the contact surface between the second support pad 252b and the first pod 210 (the upper surface of the second support pad 252b) is disposed as an arc surface to increase the fit between the second support pad 252b and the first pod 210 shell. At the same time, the lower surface of the second support pad 252b is also an arc surface with a circular opening, and corresponds to the corner position of the support 251, thereby improving the force uniformity of the contact area between the second support pad 252b and the support 251.
较佳地,支座251通过多个肘板拼接制成,肘板之间还填充设有第三隔离层253。第三隔离层253采用发泡式隔离填充在支座251的上下肘板之间,以避免船体100在装载低温液货时,液货舱200的低温传递至船体100,引起传递结构发生低温脆性破坏,影响船体100的使用安全。Preferably, the support 251 is made by splicing a plurality of brackets, and a third insulating layer 253 is filled between the brackets. The third insulating layer 253 is filled between the upper and lower brackets of the support 251 using a foamed insulating layer to prevent the low temperature of the cargo tank 200 from being transferred to the hull 100 when the hull 100 is loaded with low-temperature liquid cargo, causing low-temperature brittle failure of the transfer structure, and affecting the safety of the hull 100.
需要说明的是,对于支撑组件250的设置位置与积液槽240的设置位置相互干涉时,积液槽240的底部应直接与支座251相抵接。也就是说,靠近积液槽240的第二支撑垫252b应避开积液槽240而与第一舱体210的底部壳体相抵接,以保证支撑组件250在积液槽240位置的支撑稳定性。It should be noted that when the setting position of the support assembly 250 interferes with the setting position of the liquid collection tank 240, the bottom of the liquid collection tank 240 should directly abut against the support 251. In other words, the second support pad 252b close to the liquid collection tank 240 should avoid the liquid collection tank 240 and abut against the bottom shell of the first cabin 210 to ensure the support stability of the support assembly 250 at the position of the liquid collection tank 240.
另一方面,本申请还提供一种船舶,包括采用上述任意一种实施方式所述的低温存储液货舱结构。On the other hand, the present application also provides a ship, comprising a low-temperature storage liquid cargo tank structure according to any one of the above-mentioned embodiments.
本申请提供了低温存储液货舱结构及船舶,包括第一舱体210,第二舱体220,以及第一隔离层230。通过将第二舱体220设置于第一舱体210的内部,
以使第二舱体220的壳体将第一舱体210内部间隔为两个能够存储液货且又相互独立的空间,即第一空腔210a和第二空腔220a,其中,第二空腔220a位于第二舱体220内部。将第一隔离层230环绕包覆在第二舱体220的壳体外侧,以避免分装在第一空腔210a和第二空腔220a内的两种不同液货之间的热传递,满足了同一液货舱对不同种类低温液货的同时装载需求。同时,在第二舱体220的壳体结构出现损坏时,第一隔离层230还能够作为防溅屏壁,起到防止分装在第一空腔210a和第二空腔220a内的不同液货相互混合的情况发生。The present application provides a low temperature storage liquid cargo tank structure and a ship, comprising a first tank body 210, a second tank body 220, and a first isolation layer 230. By arranging the second tank body 220 inside the first tank body 210, The shell of the second cabin 220 divides the interior of the first cabin 210 into two spaces that can store liquid cargo and are independent of each other, namely the first cavity 210a and the second cavity 220a, wherein the second cavity 220a is located inside the second cabin 220. The first isolation layer 230 is wrapped around the outer shell of the second cabin 220 to avoid heat transfer between the two different liquid cargoes packed in the first cavity 210a and the second cavity 220a, thereby meeting the simultaneous loading requirements of different types of low-temperature liquid cargoes in the same cargo tank. At the same time, when the shell structure of the second cabin 220 is damaged, the first isolation layer 230 can also serve as a splash screen to prevent the different liquid cargoes packed in the first cavity 210a and the second cavity 220a from mixing with each other.
以上所述仅是本申请的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本申请技术原理的前提下,还可以做出若干改进和替换,这些改进和替换也应视为本申请的保护范围。
The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.
Claims (15)
- 一种低温存储液货舱结构,包括船体和安装在所述船体内的液货舱,其特征在于,所述液货舱包括第一舱体,第二舱体,以及第一隔离层,所述第二舱体设置于所述第一舱体的内部,并在所述第一舱体和第二舱体之间形成存储液货的第一空腔;所述第一隔离层位于所述第一空腔内,并将所述第二舱体环绕包覆;所述第二舱体内设有存储液货的第二空腔;其中,所述第二空腔与第一空腔不相连通。A low-temperature storage liquid cargo tank structure comprises a hull and a liquid cargo tank installed in the hull, characterized in that the liquid cargo tank comprises a first tank body, a second tank body, and a first isolation layer, the second tank body is arranged inside the first tank body, and a first cavity for storing liquid cargo is formed between the first tank body and the second tank body; the first isolation layer is located in the first cavity and surrounds and covers the second tank body; a second cavity for storing liquid cargo is provided in the second tank body; wherein the second cavity is not connected to the first cavity.
- 根据权利要求1所述的低温存储液货舱结构,其特征在于,所述第一舱体的壳体包括由多个平面构成的一个截面为多边形的棱柱状气密性结构,所述第二舱体的壳体包括由多个曲面构成的一个截面为圆形的圆柱状气密性结构。The low-temperature storage liquid cargo tank structure according to claim 1 is characterized in that the shell of the first tank body includes a prismatic airtight structure with a polygonal cross-section composed of multiple planes, and the shell of the second tank body includes a cylindrical airtight structure with a circular cross-section composed of multiple curved surfaces.
- 根据权利要求2所述的低温存储液货舱结构,其特征在于,所述第二舱体包括纵向舱壁,所述纵向舱壁自所述第二舱体的底部贯穿延伸至顶部,并将所述第二空腔间隔为两个分腔。The low-temperature storage liquid cargo tank structure according to claim 2 is characterized in that the second tank body includes a longitudinal bulkhead, which extends from the bottom to the top of the second tank body and divides the second cavity into two sub-cavities.
- 根据权利要求2所述的低温存储液货舱结构,其特征在于,所述第二舱体还包括沿壳体内壁间隔设置的多个加强环和第二型材;所述第一舱体内设有第一型材,所述第一型材的设置位置与所述第二型材相对应。The low-temperature storage liquid cargo tank structure according to claim 2 is characterized in that the second tank body also includes a plurality of reinforcement rings and a second profile arranged at intervals along the inner wall of the shell; a first profile is provided in the first tank body, and the setting position of the first profile corresponds to that of the second profile.
- 根据权利要求2所述的低温存储液货舱结构,其特征在于,所述第一舱体包括多个横向舱壁,多个所述横向舱壁自所述第一舱体的壳体内壁垂直延伸至所述第一隔离层,并将所述第一空腔间隔为多个分腔,所述第一空腔内的多个分腔通过设置在所述横向舱壁上的多个通孔相互连通。The low-temperature storage liquid cargo tank structure according to claim 2 is characterized in that the first cabin body includes a plurality of transverse bulkheads, which extend vertically from the inner wall of the shell of the first cabin body to the first isolation layer and divide the first cavity into a plurality of sub-cavities, and the plurality of sub-cavities in the first cavity are interconnected via a plurality of through holes arranged on the transverse bulkheads.
- 根据权利要求1所述的低温存储液货舱结构,其特征在于,所述液货舱还包括积液槽和导流通道,所述导流通道设置于所述第一隔离层与所述第二舱体之间,并将所述第一隔离层与所述第二舱体相间隔;所述积液槽设置于所述第一舱体底部,并贯穿所述第一舱体的底部壳体,与所述导流通道相连通。The low-temperature storage liquid cargo tank structure according to claim 1 is characterized in that the liquid cargo tank also includes a liquid accumulation groove and a diversion channel, the diversion channel is arranged between the first isolation layer and the second cabin body, and separates the first isolation layer from the second cabin body; the liquid accumulation groove is arranged at the bottom of the first cabin body, passes through the bottom shell of the first cabin body, and is connected with the diversion channel.
- 根据权利要求6所述的低温存储液货舱结构,其特征在于,所述积液槽包括多个围板和多个挡板,以及第二隔离层,多个所述围板与所述第一舱体的底部围成一个方形的槽状结构,所述第二隔离层位于所述槽状结构的底部,多个所述挡板水平设置于所述第二隔离层的上方,并与所述围板垂直连接。 The low-temperature storage liquid cargo tank structure according to claim 6 is characterized in that the liquid accumulation tank includes a plurality of enclosures and a plurality of baffles, and a second isolation layer, the plurality of enclosures and the bottom of the first cabin body form a square trough structure, the second isolation layer is located at the bottom of the trough structure, and the plurality of baffles are horizontally arranged above the second isolation layer and vertically connected to the enclosures.
- 根据权利要求7所述的低温存储液货舱结构,其特征在于,所述第二隔离层包括隔热绝缘板材。The cryogenic storage liquid cargo tank structure according to claim 7, characterized in that the second isolation layer comprises a thermal insulation board material.
- 根据权利要求7所述的低温存储液货舱结构,其特征在于,所述第一隔离层延伸覆盖在多个所述围板的部分外壁上。The cryogenic storage liquid cargo tank structure according to claim 7, characterized in that the first insulation layer extends and covers a portion of the outer walls of the plurality of enclosures.
- 根据权利要求2所述的低温存储液货舱结构,其特征在于,所述液货舱的底部还设有多个支撑组件,所述支撑组件包括支座和支撑垫,所述支撑垫位于所述支座上,并与所述第一舱体的壳体外壁相抵接。The low-temperature storage liquid cargo tank structure according to claim 2 is characterized in that a plurality of support assemblies are also provided at the bottom of the liquid cargo tank, and the support assemblies include supports and support pads, and the support pads are located on the supports and abut against the outer wall of the shell of the first cabin body.
- 根据权利要求10所述的低温存储液货舱结构,其特征在于,所述支撑垫包括第一支撑垫和第二支撑垫,所述第一支撑垫设置在与所述第一舱体棱柱状的壳体外壁的平面部分对应的位置并与所述平面部分相抵接,所述第二支撑垫设置在与所述第一舱体棱柱状的壳体外壁的棱边部分对应的位置并与所述棱边部分相抵接。The low-temperature storage liquid cargo tank structure according to claim 10 is characterized in that the support pad includes a first support pad and a second support pad, the first support pad is arranged at a position corresponding to the planar portion of the prismatic shell outer wall of the first cabin body and abuts against the planar portion, and the second support pad is arranged at a position corresponding to the edge portion of the prismatic shell outer wall of the first cabin body and abuts against the edge portion.
- 根据权利要求11所述的低温存储液货舱结构,其特征在于,所述第一舱体棱柱状的壳体外壁的棱边通过圆弧过渡,所述第二支撑垫与所述第一舱体的接触面为圆弧面。The low-temperature storage liquid cargo tank structure according to claim 11 is characterized in that the edges of the outer wall of the prismatic shell of the first tank body are transitioned through an arc, and the contact surface between the second support pad and the first tank body is an arc surface.
- 根据权利要求11所述的低温存储液货舱结构,其特征在于,所述第二支撑垫的下表面为圆弧面,并带有圆形开孔,且与所述支座的转角位置相对应。The cryogenic storage liquid cargo tank structure according to claim 11 is characterized in that the lower surface of the second support pad is an arc surface with a circular opening corresponding to the corner position of the support.
- 根据权利要求10所述的低温存储液货舱结构,其特征在于,所述支座通过多个肘板拼接制成,所述肘板之间填充设有第三隔离层,所述第三隔离层采用发泡式隔离填充在所述支座的上下肘板之间。The low-temperature storage liquid cargo tank structure according to claim 10 is characterized in that the support is made by splicing a plurality of brackets, a third insulation layer is filled between the brackets, and the third insulation layer is filled between the upper and lower brackets of the support using foam insulation.
- 一种船舶,其特征在于,包括采用权利要求1~14任意一项所述的低温存储液货舱结构。 A ship, characterized by comprising a low-temperature storage liquid cargo tank structure according to any one of claims 1 to 14.
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CN108454785A (en) * | 2017-02-17 | 2018-08-28 | 江南造船(集团)有限责任公司 | Type B independent liquid cargo tank leakage fluid goods derived type structure |
CN112278163A (en) * | 2020-11-04 | 2021-01-29 | 江南造船(集团)有限责任公司 | Low-temperature liquid cargo leakage protection device of independent liquid tank |
CN116353772A (en) * | 2023-03-07 | 2023-06-30 | 江南造船(集团)有限责任公司 | Low-temperature liquid storage cargo hold structure and ship |
-
2023
- 2023-03-07 CN CN202310217221.3A patent/CN116353772A/en active Pending
-
2024
- 2024-01-08 WO PCT/CN2024/071047 patent/WO2024183444A1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102066826A (en) * | 2008-06-20 | 2011-05-18 | 三星重工业株式会社 | Corner panel for liquefied natural gas cargo tank |
KR20150095243A (en) * | 2014-02-13 | 2015-08-21 | 삼성중공업 주식회사 | Tank |
CN105711753A (en) * | 2014-12-03 | 2016-06-29 | 江南造船(集团)有限责任公司 | Insulated mounting method for top-surface floating check devices of A-type independent liquid cargo tank |
CN108454785A (en) * | 2017-02-17 | 2018-08-28 | 江南造船(集团)有限责任公司 | Type B independent liquid cargo tank leakage fluid goods derived type structure |
CN206766285U (en) * | 2017-05-09 | 2017-12-19 | 重庆交通大学 | A kind of new liquid tank based on tanker oceangoing ship |
CN112278163A (en) * | 2020-11-04 | 2021-01-29 | 江南造船(集团)有限责任公司 | Low-temperature liquid cargo leakage protection device of independent liquid tank |
CN116353772A (en) * | 2023-03-07 | 2023-06-30 | 江南造船(集团)有限责任公司 | Low-temperature liquid storage cargo hold structure and ship |
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