CN106660622A - Propulsion device of liquefied natural gas carrier, liquefied natural gas carrier, power supply device of offshore plant, and offshore plant comprising the power supply device - Google Patents
Propulsion device of liquefied natural gas carrier, liquefied natural gas carrier, power supply device of offshore plant, and offshore plant comprising the power supply device Download PDFInfo
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- CN106660622A CN106660622A CN201580046780.6A CN201580046780A CN106660622A CN 106660622 A CN106660622 A CN 106660622A CN 201580046780 A CN201580046780 A CN 201580046780A CN 106660622 A CN106660622 A CN 106660622A
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- motor
- electric power
- food ingredients
- dried food
- power
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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
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J3/00—Driving of auxiliaries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Power Engineering (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Control Of Eletrric Generators (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a propulsion device of a liquefied natural gas carrier and a power supply device of an offshore plant, the propulsion device of a liquefied natural gas carrier enabling a dual fuel oil electric generator to operate in a gas mode even when fast acceleration and deceleration is necessary, and the power supply device of an offshore plant enabling a dual fuel oil electric generator to operate in a gas mode even when there is a sudden change in the power consumption of drilling equipment and a thruster motor. Provided is a propulsion device of a liquefied natural gas carrier, the propulsion device, according to one embodiment of the present invention, comprising: a dual fuel oil electric generator which uses gas as fuel in a gas mode and uses oil as fuel in an oil mode; a variable frequency converter which receives power from the dual fuel oil electric generator and supplies the power to a main propulsion motor; the main propulsion motor which is connected to the variable frequency converter and rotates a propeller by receiving the power from the variable frequency converter; and a power storage unit which is connected to the variable frequency converter and supplies power to the main propulsion motor if the amount of increase in the power consumption of the main propulsion motor is greater than or equal to a first threshold value.
Description
Technical field
The present invention relates to the propulsion plant of liquified natural gas carrier (LNGC), more particularly to needing promptly to carry out acceleration and deceleration
In the case of also can with gas mode run double fuel fry dried food ingredients motor liquified natural gas carrier (LNGC) propulsion plant.
Moreover, it relates to the electric supply installation of oceanographic equipment and the oceanographic equipment including the electric supply installation, especially relate to
And also double fuel fry dried food ingredients can be run with gas mode when the consumption electric power of drilling equipment and propulsion motor drastically changes
The electric supply installation of the oceanographic equipment of motor.
Background technology
Natural gas is mainly to be made up of methane and comprising the fossil fuel of a small amount of ethane, propane etc., and recently at each
Technical field receives publicity as the low stain energy.Especially since liquefied natural gas (LNG) is relatively cheap and causes less
Pollution, therefore LNG is suitable as fuel used to generate electricity.
Recently, in the case of underground energy exhaustion, various marine resources are actively developed, and many countries strive
Mutually guarantee and be developed for the oil well and gas well of crude oil extraction at sea or natural gas.
Natural gas is transported with gaseous state, or by liquified natural gas carrier (LNGC) (LNGC, Liquefied Natural Gas
Carrier) remote consumer is transported to liquefied natural gas (LNG, Liquefied Natural Gas).LNG is to pass through
Natural gas is cooled to obtained from extremely low temperature (about -163 DEG C are less), and because the volume of LNG is gaseous natural gas
About 1/600, therefore be very suitable for marine long-distance transportation.
When natural gas is transported with liquefied natural gas state, liquefied natural gas is in production scene by by natural air cooling
Produce to extremely low temperature, then remote destination is transported to by LNG cargo ships, LNG passes through floating in the destination
Storage and regasification unit (FSRU, Floating Storage and Regasification Unit) or land shipping dock
And be regasified, then it is provided to consumer.
Or, when LNG regasifies ship (RV) and is transmitted by LNG, LNG is regasified in LNG-RV itself, so
After be directly supplied to consumer, and need not move through LNG floating storage regasification plant or land shipping dock.
Because the condensing temperature of natural gas is for about at atmosheric pressure -163 DEG C of extremely low temperature, so if the temperature of LNG
Degree is slightly above at atmosheric pressure -163 DEG C, then LNG evaporations.For example, for existing LNG cargo ships, although LNG cargo ships
Cargo hold is furnished with thermal insulation structure, but the heat of outside is persistently transferred to LNG so that in the process that Ship Transportation LNG is transported by LNG
LNG in middle hold is persistently gasified so as to produce boil-off gas in cargo hold.
Double fuel oil electric propulsion LNG cargo ships drive propulsion electricity using the electric power by produced by double fuel fry dried food ingredients motor
Motivation.Double fuel fry dried food ingredients motor drives multiple using a kind of fuel oil in the middle of heavy oil, three kinds of fuel of light oil and gas
Motivation simultaneously produces electric power by being connected to the generator of its drive shaft.The electric power of generation is provided to auxiliary by panel
Device, propulsion motor etc..And, in order to drive propulsion motor with the rotating speed needed for propelling ship, using frequency up converter
To supply electric power to main propulsion motor and control speed.
Compare with light oil with general heavy oil, gas is for identical generated energy needs relatively low cost and discharges less
Noxious material.
However, compared with oily mode operation, generator needs longer load transformation period when running with gas mode.
Fig. 1 is the figure of the maximum load increment rate for illustrating generator, and table 1 illustrates generator with gas mode and with oily mode operation
When for changing time of axle speed.
[table 1]
| Axle speed | Oil | Gas |
| From 0rpm to 26rpm | 15 seconds | 30 seconds |
| From 26rpm to 53rpm | 45 seconds | 180 seconds |
| From 53rpm to 81rpm | 360 seconds | 780 seconds |
| From 81rpm to 53rpm | 220 seconds | 780 seconds |
| From 53rpm to 26rpm | 15 seconds | 30 seconds |
| From 26rpm to 0rpm | 15 seconds | 30 seconds |
As shown in table 1, when generator is run with gas mode, for changing what generator loading was spent with equal amount
Time is with about 2 times during oily mode operation.However, such as harbour berth or crash back etc. in the case of, need rapid
Acceleration or deceleration.Fig. 2 is the figure for illustrating the axle speed change when harbour is berthed.As shown in Fig. 2 in harbour lay day, axle
Speed suddenly change, so as to cause generator loading suddenly change.
Therefore, the harbour for needing rapid acceleration or deceleration berth or crash back etc. in the case of, double fuel fry dried food ingredients
Motor can not be run with gas mode, and double fuel fry dried food ingredients motor is run by force with gas mode and may cause to make engine
Cause to have a power failure in ship into infringement or because the frequency of main power source is unstable.
Therefore, problem of the prior art is：When the rapid acceleration or deceleration of ship is needed, double fuel fry dried food ingredients motor is not
Can be run with gas mode.
Especially since the rapid acceleration or deceleration of the ship required when harbour is berthed in double fuel fry dried food ingredients motor with gas
The permission of possible load change is exceeded in the state of bulk-mode operation, therefore oily mould has been switched in double fuel fry dried food ingredients motor
After formula, carry out harbour and berth.
Especially, enter to exercise cargo hold cool down for LNG load harbour lay day, or when ship load LNG it
After when leaving harbour, produce a large amount of excessive boil-off gas.According to prior art, because double fuel fry dried food ingredients motor berths at harbour
Period can not be run with gas mode, therefore have the problem for wasting a large amount of boil-off gas.
Usage amount with resources such as quick industrialization phenomenon and industrial development, oil gradually increasing, therefore,
The steady production of oil and supply become in the world very important problem.
Due to these reasons, to being considered ignored small-scale marginal oil field or deep-sea oil without economy so far
The exploitation in field becomes economical.Therefore, with the development of offshore mining technology, actively developing to suitable for opening
The oceanographic equipment of the drilling rig for sending out oil field this.
Oceanographic equipment has the various brills such as derrick system, winch, top drive, slush pump, cement pump, oil-containing groove, drilling rod
Visit relevant apparatus such that it is able to the oil or natural gas to being present in the underground in seabed.
Winch is the device for performing the operation such as the lifting of drilling rod and the insertion of housing, including reel and motor.
Reel receives power to carry out the winding to wirerope or debatching from motor, so as to adjust the lifting of drilling rod.Motor can be adjusted
Section speed, therefore, it is possible to the speed of reel, so as to adjust the speed of drilling rod.
It is the device that the power for probing and fastener tube is provided in drilling operation that top is driven.
Oceanographic equipment be divided into be docked in certain place in coastal waters and carry out drilling operation fixed platform and 3000m with
On deep-sea in can carry out the floating marine equipment of drilling operation.
Multiple screws are installed in floating marine equipment, as main propelling machinery or for the dynamic bit based on computer
Put the propulsion plant of control.Screw as install alow and allow hand over screw action direction propulsion plant, lead to
It is usually used in voluntarily traveling or entering and leaving port on canal.Screw receives power from the screw motor for being connected to screw
Supply.
Fig. 3 is the schematic diagram of the electric power system according to prior art.
As shown in figure 3, the alternating electromotive force by produced by generator 100 is provided to A.C buses, and connect in A.C buses
There are an AC/DC converters 121, the 2nd AC/DC converters 122 and the 3rd AC/DC converters 123.
The exchange supplied by A.C buses is converted into direct current and is supplied to a DC buses by the first AC/DC converters 121
131, DC/AC converters 141 are converted into the direct current supplied by a DC buses 131 to exchange and supply to the first screw electricity
Motivation 151.
The exchange supplied by A.C buses is converted into direct current and is supplied to the 2nd DC buses by the 2nd AC/DC converters 122
132, DC/AC converters 142 are converted into the direct current supplied by the 2nd DC buses 132 to exchange and supply to the second screw electricity
Motivation 152.
In addition, the exchange supplied by A.C buses is converted into direct current and is supplied to the 3rd by the 3rd AC/DC converters 123
DC buses 133, are connected with multiple DC/AC converters 143 to 148 in the 3rd DC buses 133.Multiple DC/AC converters 143 to
148 respectively by the direct current supplied by the 3rd DC buses 133 be converted into exchanging and supply to multiple winch motors 153,154,
155th, 158,159 and it is multiple top drive motor 156,157 in be connected to the motor of itself.
Motor 156,157 is driven on winch motor 153,154,155,158,159 and top to be needed to fill the probing such as drilling rod
Put and perform repeatedly descending operation, thus with being rotated with rated power during Jing often occur to stop suddenly or counter-rotating etc.
The operating characteristics of braking, Jing often occurs to stop suddenly during screw motor 151,152 also has with rated power rotation
Only or the braking such as counter-rotating operating characteristics.However, when braking in the motor, regenerated electric power can be produced.In addition,
When screw is rotated due to external disturbance, in screw motor regenerated electric power is produced.
When regenerated electric power is produced in driving motor or screw motor on winch motor, top, winch electricity is connected to
The voltage of the DC buses that motor or screw motor are driven in motivation, top can rise, if voltage rises to DC, bus to be held
The limit received, then DC buses can trip (trip).
Therefore, in the prior art, carry out heat to regenerated electric power by arranging resistance (resistor) 161 to 166 to disappear
Consumption, so as to prevent the trip phenomenon of DC buses.
Fig. 4 is the chart for illustrating the electric power that each part in the electric power system according to prior art is consumed.
In the diagram, the electric power by produced by generator is provided to the first load 220 and AC/DC by panel
Converter 260.Exchange is converted into direct current and is supplied to the second load 240, by DC/AC converters by AC/DC converters 260
It is provided to winch 230.First load 220 and the second load 240 are the loads of the electric power for consuming certain.Conversely, in winch 230
The amount of power for being consumed persistently changes, and when the electric power in Fig. 4 is negative, represents the generation of regenerated electric power.The institute in winch 230
The regenerated electric power of generation is then consumed in the second load 240 or resistance 250.
Understand, with the drastically change of the consumption electric power of winch 230, the electric power output of generator 210 also can drastically change.
However, compared with the constant situation of electric power output, diesel-driven generator can use more in the case of electric power output is jumpy
Fuel, as the fuel for being used increases, the waste gas discharged also increases.
In addition, in order to according to winch motor, top drive motor, the drastically change of the power consumption of screw motor and
Corresponding electric power is supplied, generator is required to change output power rapidly.But, the reaction speed of generator is slower, therefore
Exist cannot according to winch motor, top drive motor, the drastically change of the power consumption of screw motor and supply corresponding
Electric power problem.When appropriate electric power is provided without normal direction winch motor, top drive motor, screw motor, exist
Cause the problem of the situation of danger due to the particularity of drilling operation.In addition, when having a power failure, to car motor or top
Driving the supply of electric power of motor can disconnect suddenly, consequently, it is possible to the situation for causing danger occurs.
Or, generator 210 can be double fuel fry dried food ingredients motor.Double fuel fry dried food ingredients motor is by using heavy oil, light oil, day
So a kind of fuel in three kinds of fuel such as gas is driving multiple engines, and is produced by being connected to the generator of its drive shaft
Electric power.
Compared with common heavy oil, light oil, the cost that natural gas is produced needed for identical power is lower, therefore in order to save
Fuel, double fuel fry dried food ingredients motor should run in gas mode as far as possible.
In addition, when natural gas is used as fuel by double fuel fry dried food ingredients motor, the nuisance included in waste gas discharged
Matter (NOX、SOXDeng) amount can reduce such that it is able to meet NO in the waste gas of IMO definedsXDischarge capacity regulation, i.e. NOXPhase III
Require (Tier-III requirement).In addition, as common diesel motor, by using SCR
(SCR) system is reducing NOX, so as to meet NOXPhase III requirement, and as double fuel fry dried food ingredients motor, it is not necessary to SCR device,
Therefore the considerably advantageous layout design in ship.SCR is typically installed at fuel compartment, 2.5 times of its a diameter of gas pipeline with
On, therefore, it is difficult to arrangement.
However, compared with the operation under oily pattern, when double fuel fry dried food ingredients motor runs in gas mode, load changes
Time is longer.As shown in figure 1, when generator runs in gas mode, needed for realizing that same amount of generator loading changes
Time be considerably longer than ruuning situation under oily pattern.
When the loosening of winch/pull-up is very fast, larger load is may require that in 2 to 5 seconds, and cannot under oily pattern
Heavy load required for providing winch within the time period, therefore when running with gas mode by force, engine may be caused
The frequency along bad and main electric power it is unstable, so as to the generation for causing power failure, and the generation of the power failure in drilling process also has
The blast of drilling well (well) may be caused.
That is, in the prior art there are the following problems：When the consumption electric power of drilling rig drastically changes, it is impossible to gas
Mode operation double fuel fry dried food ingredients motor；Due to consuming regenerated electric power by resistance, therefore cause the wasting of resources；Due to generator
The drastic change of electric power output and the increase of caused fuel consumption and waste gas；Generator without normal direction winch motor, top drive motor,
Screw motor provides appropriate electric power；And it is likely to occur unsafe condition due to unexpected power failure.
The content of the invention
Technical problem
It is an object of the invention to provide also can be double with gas mode operation in the case where rapid acceleration and deceleration are needed
The propulsion plant of the liquified natural gas carrier (LNGC) of fuel oil generator.
In addition, it is an object of the invention to also can when the consumption electric power of drilling equipment and propulsion motor drastically changes
The electric supply installation of enough oceanographic equipments that double fuel fry dried food ingredients motor is run with gas mode.
Technical scheme
According to for realizing one embodiment of the invention of above-mentioned purpose, there is provided the propulsion dress of liquified natural gas carrier (LNGC)
Put, it includes double fuel fry dried food ingredients motor, frequency up converter, main propulsion motor and power storage unit, wherein, double combustions
Gas is used as fuel by material fry dried food ingredients motor in gas mode, and oil is used as into fuel, the frequency up converter under oily pattern
Electric power being received from double fuel fry dried food ingredients motor and this being supplied power into the main propulsion motor, the main propulsion motor is connected
It is connected on the frequency up converter and receives electric power with rotating screw from the frequency up converter, the power storage unit quilt
Be connected to frequency up converter, when the main propulsion motor consumption electric power incrementss more than first threshold when, the electricity
Power memory cell to the main propulsion motor supplies electric power.
Specifically, the described double combustions when first threshold can be run according to the double fuel fry dried food ingredients motor with gas mode
The load of material fry dried food ingredients motor changes permissible value to determine.
Additionally, when the electric power generated by the double fuel fry dried food ingredients motor has residue, the power storage unit can be with
Store remaining electric power.
Additionally, the propulsion plant of the liquified natural gas carrier (LNGC) can also include resistance unit, by the double fuel
When the electric power that fry dried food ingredients motor is generated has residue, in the case where the capacity of the power storage unit is full of, the resistance list
Unit consumes remaining electric power.
Additionally, when the variable quantity of the power consumption of the main propulsion motor is more than or equal to Second Threshold, it is described double
Fuel oil generator can be run with gas mode.
Additionally, can occur the electric power of the main propulsion motor when the liquified natural gas carrier (LNGC) is at anchor
The variable quantity of consumption is more than or equal to the Second Threshold.
Additionally, the frequency up converter can include：Dc bus；AC/DC converter, the ac/dc turns
Alternating current by produced by the double fuel fry dried food ingredients motor is converted into direct current and by the direct current electricity suppl to described by parallel operation
Dc bus；The direct current of the dc bus is converted into exchange by AC/DC converter, the AC/DC converter
Electricity and by it is described exchange electricity suppl to the main propulsion motor；And DC-DC converter, the DC/DC conversion
Device is connected to the dc bus.
Additionally, the power storage unit can be ultracapacitor.
According to for realizing another embodiment of the present invention of above-mentioned purpose, there is provided a kind of liquified natural gas carrier (LNGC),
Including：LNG tank, the LNG tank stores liquefied natural gas；Double fuel fry dried food ingredients motor, double combustions
Material fry dried food ingredients motor gas used in gas mode is as fuel and the oil used in oily pattern is used as fuel；Promote mainly into electronic
Machine, the main propulsion motor rotates screw by receiving electric power from the double fuel fry dried food ingredients motor；And electric power storage
Memory cell, when the incrementss of the power consumption of the main propulsion motor are more than or equal to first threshold, the electric power storage
Unit to the main engine supply electric power, wherein, the double fuel fry dried food ingredients motor is made with gas mode run duration
Electric power is produced with the boil-off gas being stored in the LNG tank of the liquified natural gas carrier (LNGC).
Especially, the first threshold can be according to described double when the double fuel fry dried food ingredients motor is run with gas mode
The load of fuel oil generator changes permissible value to determine.
According to for realizing the another embodiment of the invention of above-mentioned purpose, there is provided a kind of power supply of oceanographic equipment
Device, including：Double fuel fry dried food ingredients motor, double fuel fry dried food ingredients motor gas used in gas mode as fuel and
Oil is used as fuel used in oily pattern；AC/DC converter, the AC/DC converter will be produced by the generator
Raw alternating current is converted into direct current and by the direct current electricity suppl to dc bus；Electrical load, the electrical load connection
To the dc bus；And power storage unit, the power storage unit is connected to the dc bus, and described
The incrementss of the time per unit of the power consumption of electrical load are supplied when being more than or equal to first threshold to the electrical load
Electric power.
Especially, the incrementss in the time per unit of the power consumption of the electrical load are more than or equal to described first
During threshold value, the double fuel fry dried food ingredients motor can be run with gas mode.
Additionally, the first threshold can be according to double combustions when the double fuel fry dried food ingredients motor is run with gas mode
The load of material fry dried food ingredients motor changes permissible value to determine.
Additionally, when the electric power generated by the double fuel fry dried food ingredients motor has residue, the power storage unit can be with
Store remaining electric power.
Additionally, the power supply device of the oceanographic equipment can also include resistance unit, by the double fuel fry dried food ingredients
When the electric power that motor is generated has residue, in the case where the capacity of the power storage unit is full of, the resistance unit disappears
Consume remaining electric power.
Additionally, the electrical load generates regenerated electric power, the power storage unit can store the regenerated electric power.
Additionally, the electrical load can be drilling equipment.
Additionally, the electrical load can be propeller.
Additionally, first power storage unit can be ultracapacitor.
According to for realizing the another embodiment of the invention of above-mentioned purpose, there is provided a kind of oceanographic equipment, including：Double combustions
Material fry dried food ingredients motor, double fuel fry dried food ingredients motor gas used in gas mode is as fuel and oily used in oily pattern
As fuel；AC/DC converter, the AC/DC converter changes in the alternating current by produced by the generator
Into direct current and by the direct current electricity suppl to dc bus；Electrical load, the electrical load is connected to the dc bus；
And power storage unit, the power storage unit is connected to the dc bus, and in the electric power of the electrical load
The incrementss of the time per unit of consumption be more than or equal to first threshold when to the electrical load supply electric power.
Especially, the incrementss in the time per unit of the power consumption of the electrical load are more than or equal to described first
During threshold value, the double fuel fry dried food ingredients motor can be run with gas mode.
Beneficial effect
According to the embodiment of the present invention, the propulsion plant of LNG cargo ships has power storage unit, so that double fuel is oily
Generator runs under constant load, and the power storage unit storage when the electric power by produced by double fuel fry dried food ingredients motor is remaining
Remaining electric power, and power storage unit provides stored electric power when electric power is not enough, therefore, even if needing rapid acceleration
Or double fuel fry dried food ingredients motor also can be run with gas mode when slowing down, so as to reduce the discharge of fuel cost and harmful substance.
And, according to the embodiment of the present invention, on winch motor, top the electric power of motor, propeller motor is driven
When consumption is increased dramatically, the electric power being stored in power storage unit is provided using power storage unit, even if therefore in drilling well
During the power consumption suddenly change of equipment, double fuel fry dried food ingredients motor can also be run with gas mode.
And, power storage unit is stored in winch motor, top and drives the regeneration generated in motor, propeller motor
Electric power, then drive motor on winch motor, top, when the power consumption of propeller motor is increased dramatically supply it is stored
Electric power, such that it is able to be efficiently used regenerated electric power.
Description of the drawings
Fig. 1 is the figure of the maximum load increment rate for illustrating generator；
Fig. 2 is the figure for illustrating the axle speed change when harbour is berthed；
Fig. 3 is the schematic diagram of the electric power system according to prior art；
Fig. 4 is the chart for illustrating the electric power that each part in the electric power system according to prior art is consumed；
Fig. 5 is the figure of the propulsion plant of LNG cargo ships according to the first embodiment of the invention；
Fig. 6 is the figure of the propulsion plant for illustrating LNG cargo ships second embodiment of the invention；
Fig. 7 is the figure of the power supply device of the oceanographic equipment for illustrating the 3rd embodiment of the invention.
Specific embodiment
Describe the preferred embodiment of the present invention in detail below with reference to accompanying drawings.
First, it is noted that when the part to each accompanying drawing gives reference, for identical composition portion
Point, even if the part is illustrated in different drawings, also represented with identical reference as far as possible.Additionally, in explanation
When of the invention, think to known structure or function illustrate will not know unnecessarily subject of the present invention when,
Omit this to illustrate.
First, by the propulsion plant of the LNG cargo ships with reference to Fig. 5 descriptions according to the first embodiment of the invention.Fig. 5 is
The figure of the propulsion plant of LNG cargo ships according to the first embodiment of the invention.
As shown in figure 3, the propulsion plant of LNG cargo ships according to the first embodiment of the invention includes double fuel fry dried food ingredients
Motor 310, frequency up converter 320, main propulsion motor 330, resistance unit 340, reduction gearing 350 and screw 360.
Double fuel fry dried food ingredients motor 310 produces electric power as fuel using oil or natural gas.Double fuel fry dried food ingredients motor 310 exists
To produce electric power using oil during oily mode operation, and electric power is produced using natural gas when running with gas mode.
LNG is stored in LNG storage tank and is transported by LNGC, the LNG natural evaporations being stored in the LNG storage tank and produce steaming
Get angry body (BOG).Therefore, double fuel fry dried food ingredients motor 310 can produce electric power when running with gas mode using BOG.
Because natural gas is more cheap than oil, and less harmful substance is produced, therefore double fuel fry dried food ingredients motor 310 is with gas
During mode operation advantageously.However, when double fuel fry dried food ingredients motor 310 is run with gas mode, being changed with identical amount and being sent out
The time of motor load is with about twice during oily mode operation.However, harbour berth or crash back etc. in the case of, need
Rapid acceleration or deceleration is wanted, so as to cause the suddenly change of the required electric power of main propulsion motor 330.
The present invention first embodiment in, when need rapid acceleration or deceleration when, double fuel fry dried food ingredients motor 310 with
Gas mode is run under constant load.That is, double fuel fry dried food ingredients motor 310 produces constant electric power with gas mode.
Then, when the speed due to LNGC is low makes electric power remaining, remaining electric power is consumed by resistance unit 340.
In one example, when rapid acceleration/deceleration is needed, the demand electric power of main propulsion motor 330 becomes suddenly
Change and double fuel fry dried food ingredients motor 310 continues to run with to meet the maximum of the demand electric power of main propulsion motor.And, work as master
When the demand electric power of propulsion motor 330 reaches maximum, the electric power by produced by double fuel fry dried food ingredients motor 310 is promoted mainly into electricity
Motivation 330 is consumed, and when the demand electric power of main propulsion motor 330 is less than maximum, by the institute of double fuel fry dried food ingredients motor 310
The electric power of the surplus in the electric power of generation is consumed by resistance unit 340.
In another example, double fuel fry dried food ingredients motor 310 can run, to meet the demand of main propulsion motor 330
The certain proportion of the maximum of electric power.For example, when the maximum of the demand electric power of main propulsion motor is A, double fuel fry dried food ingredients
Motor 310 can run under the load that disclosure satisfy that 0.8A.When the demand electric power of main propulsion motor 330 is 0.8A or less
When, double fuel fry dried food ingredients motor 310 can continue to run under constant load disclosure satisfy that 0.8A, and work as main propulsion motor
When 330 demand electric power is more than 0.8A, double fuel fry dried food ingredients motor 310 disclosure satisfy that the demand electric power of main propulsion motor 330
Load under run.Even if that is, when the demand electric power of main propulsion motor 330 is 0.8A or more hour, double fuel is oily
Generator 310 also runs under the load that disclosure satisfy that 0.8A, so as to the demand electric power for working as main propulsion motor 330 increases suddenly
When also meet the demand electric power of main propulsion motor 330.
Frequency up converter 320 receives electric power from double fuel fry dried food ingredients motor 310, and this is supplied power into main propulsion motor
330.As shown in figure 3, frequency up converter 320 includes AC/DC converter 321, dc bus 322, AC/DC converter
324 and DC-DC converter 323.
The alternating current generated by double fuel fry dried food ingredients motor 310 is converted into direct current and is incited somebody to action by AC/DC converter 321
The direct current electricity suppl to dc bus 322, and AC/DC converter 324 turn in the direct current supplied from dc bus 322
Change alternating current into and by the exchange electricity suppl to main propulsion motor 330.
DC-DC converter 323 is connected to the supply of electric power of resistance unit 340 and control to resistance unit 340.Also
It is to say, when the electric power by produced by double fuel fry dried food ingredients motor 310 is remaining, DC-DC converter 323 supplies remaining electric power
Should be to resistance unit 340.
Resistance unit 340 is connected to frequency up converter 320, to remain when the electric power by produced by double fuel fry dried food ingredients motor 310
Remaining electric power is consumed when remaining.
Main propulsion motor 330 is connected to frequency up converter 320 and receives electric power so that screw from frequency up converter 320
360 rotations.
Its rotating speed per minute is transformed into reduction gearing 350 rotating speed per minute of screw 360.
Then, by with reference to Fig. 6 describing the propulsion plant of LNG cargo ships second embodiment of the invention.Fig. 6
It is the figure of the propulsion plant for illustrating LNG cargo ships second embodiment of the invention.
As shown in fig. 6, the propulsion plant of LNG cargo ships second embodiment of the invention includes double fuel fry dried food ingredients
Motor 310, frequency up converter 320, main propulsion motor 330, power storage unit 410, resistance unit 340, reduction gearing 350
With screw 360.
Double fuel fry dried food ingredients motor 310 uses oil or natural gas to produce electric power as fuel.Double fuel fry dried food ingredients motor 310 with
Electric power is produced using oil during oily mode operation, and electric power is produced using natural gas when running with gas mode.
LNG is stored in LNG storage tank and is transported by LNGC, the LNG natural evaporations being stored in the LNG storage tank and produce steaming
Get angry body (BOG).Therefore, double fuel fry dried food ingredients motor 310 can produce electric power when running with gas mode using BOG.
In second embodiment of the present invention, when rapid acceleration or deceleration is needed, if double fuel fry dried food ingredients motor 310
With gas mode operation, and the incrementss of the power consumption of main propulsion motor 330 are more than or equal to threshold value, then electric power storage is single
Unit 410 to main propulsion motor 330 provides electric power.Now, threshold value can according in double fuel fry dried food ingredients motor 310 with gas mode
The load of double fuel fry dried food ingredients motor 310 during operation changes permissible value to determine.That is, when the rapid acceleration or deceleration of needs
When, double fuel fry dried food ingredients motor 310 runs in gas mode, and the incrementss of the power consumption of main propulsion motor 330 are more than
The load of double fuel fry dried food ingredients motor 310 changes permissible value, so as to double fuel fry dried food ingredients motor 310 can not meet main propulsion motor
330 power consumption, power storage unit 410 supplements the unappeasable part..
When the incrementss of the power consumption of main propulsion motor 330 are less than threshold value, power storage unit 410 can be stored
Electric power.Especially, when the electric power generated by double fuel fry dried food ingredients motor 310 is remaining, power storage unit 410 can store surplus
Remaining electric power.
And, when the power consumption of main propulsion motor 330 is strongly reduced, the load of double fuel fry dried food ingredients motor 310 changes
Change degree may not keep up with the power consumption of main propulsion motor 330 and reduce.In this case, by double fuel fry dried food ingredients motor
310 electric power for being generated are remaining, and power storage unit 410 stores remaining electric power.And, by double fuel fry dried food ingredients motor 310
During the electric power residue for being generated, in the case where the capacity of power storage unit 410 is full of, resistance unit 340 consumes remaining
Electric power.
Frequency up converter 320 receives electric power from double fuel fry dried food ingredients motor 310, and this is supplied power into main propulsion motor
330.As shown in figure 3, frequency up converter 320 includes AC/DC converter 321, dc bus 322, AC/DC converter
324 and DC-DC converter 323.
The alternating current generated by double fuel fry dried food ingredients motor 310 is converted into direct current and is incited somebody to action by AC/DC converter 321
The direct current electricity suppl to dc bus 322, and AC/DC converter 324 turn in the direct current supplied from dc bus 322
Change alternating current into and by the exchange electricity suppl to main propulsion motor 330.
DC-DC converter 323 is connected to the supply of electric power of resistance unit 340 and control to resistance unit 340.Also
It is to say, when the electric power by produced by double fuel fry dried food ingredients motor 310 is remaining, in the feelings that the capacity of power storage unit 410 is full of
Under condition, to resistance unit 340 remaining electric power is supplied.
Power storage unit 410 can be at least one of ultracapacitor, capacitor and battery.Specifically, electricity is worked as
When power memory cell 410 is that have the ultracapacitor than the faster reaction speed of generator 310, in main propulsion motor 330
Demand electric power when increasing suddenly, power storage unit 410 can promptly supply power to main propulsion motor 330.
Resistance unit 340 is connected to frequency up converter 320, to remain when the electric power for passing through the generation of double fuel fry dried food ingredients motor 310
Remaining electric power is consumed when remaining.
Main propulsion motor 330 is connected to frequency up converter 320 and receives electric power so that screw from frequency up converter 320
360 rotations.
Then, the power supply device of the oceanographic equipment of the 3rd embodiment of the invention is illustrated with reference to Fig. 7.Fig. 7
It is the figure of the power supply device of the oceanographic equipment for illustrating the 3rd embodiment of the invention.Oceanographic equipment is referred to such as
The equipment related to marine resources development such as drilling ship, semi-submersible rig.
As shown in fig. 7, the power supply device of oceanographic equipment according to the embodiment of the present invention includes double fuel fry dried food ingredients
Motor 710, AC/DC converter 721, electrical load 730, power storage unit 740 and resistance unit 750.
Double fuel fry dried food ingredients motor 710 produces electric power as fuel using oil or natural gas.Double fuel fry dried food ingredients motor 710 exists
To produce electric power using oil during oily mode operation, and electric power is produced using natural gas when running with gas mode.
The electric power generated by double fuel fry dried food ingredients motor 710 can also be changed to be suitable for electrical load by transformer
Supply after the voltage for using to AC/DC converter 721.
The alternating current generated by double fuel fry dried food ingredients motor 710 is converted into direct current and is incited somebody to action by AC/DC converter 721
The direct current electricity suppl is to dc bus 722.As shown in figure 4, dc bus 722 can be drilling well dc bus or screw direct current
Bus, drilling well dc bus is connected to the electrical load related to drilling equipment, and screw dc bus is connected to screw electricity
Motivation.
Electrical load 730 is connected with dc bus 722 and receives electric power from dc bus 722.Electrical load 730 can be
Such as winch motor, top drive the drilling equipment or screw motor of motor.Motor and spiral are driven in winch motor, top
Oar motor makes its power consumption drastically change due to operation characteristic, and generates regenerated electric power.
In an embodiment of the present invention, even if when the power consumption of electrical load 730 drastically changes, double fuel fry dried food ingredients is electric
Machine 710 is also run with gas mode, and double by from power storage unit 740 to the supply electric power of electrical load 730, supplementing
Fuel oil generator 710 can not meet the problem of the power consumption of electrical load 730.For example, the electric power in electrical load 730 disappears
When the incrementss of the time per unit of consumption are more than or equal to threshold value, double fuel fry dried food ingredients motor 710 is with gas mode operation, electric power storage
Memory cell 740 is to the supply electric power of electrical load 730.Threshold value can according to double fuel fry dried food ingredients motor 710 with gas mode operation
When double fuel fry dried food ingredients motor 710 load change permissible value determining.That is, when the power consumption of electrical load 730 is dashed forward
So during increase, double fuel fry dried food ingredients motor 710 runs in gas mode, and the incrementss of the power consumption of electrical load 730 are big
Change permissible value in the load of double fuel fry dried food ingredients motor 710, so as to double fuel fry dried food ingredients motor 710 can not meet main propulsion motor
730 power consumption, power storage unit 740 supplements the unappeasable part.
When the electric power generated by double fuel fry dried food ingredients motor 710 has residue, power storage unit 740 can store residue
Electric power.Especially, power storage unit 740 can store the regenerated electric power generated by electrical load 730.That is,
Power storage unit 740 can store the regenerated electric power when electrical load 730 generates regenerated electric power, and in electrical load 730
Power consumption supply the regenerated electric power to electrical load 730 when sharply increasing.
And, when the power consumption of electrical load 730 is strongly reduced, the load of double fuel fry dried food ingredients motor 710 changes journey
Degree may not keep up with the power consumption of electrical load 730 and reduce.In this case, generated by double fuel fry dried food ingredients motor 710
Electric power it is remaining, power storage unit 740 stores remaining electric power.And, in the electricity generated by double fuel fry dried food ingredients motor 710
When power has residue, in the case where the capacity of power storage unit 740 is full of, resistance unit 750 consumes remaining electric power.And
And, if electrical load 730 generates regenerated electric power, the first storage of power storage unit 740 regenerated electric power, and in electric power storage
When the capacity of unit 740 is full of, resistance unit 750 consumes regenerated electric power.
Power storage unit 740 can be at least one of ultracapacitor, capacitor and battery.Specifically, electricity is worked as
When power memory cell 740 is that have the ultracapacitor than the faster reaction speed of double fuel fry dried food ingredients motor 710, in electrical load
When 730 demand electric power increases suddenly, power storage unit 740 can promptly supply power to electrical load 730.
The technological thought of the present invention is illustrated to being for illustration only property described above, for one of ordinary skill in the art
Speech, in the case of the inner characteristic without departing from the present invention, can carry out various modifications and variations to the present invention.Therefore, at this
The technological thought that embodiment disclosed in invention is merely illustrative and not limiting of the present invention, the model of the technological thought of the present invention
Enclose and be not restricted by the embodiments.Protection scope of the present invention should be explained according to claims, and in its etc.
All technological thoughts in co-extensive should be interpreted as including in scope of the presently claimed invention.
Claims (21)
1. a kind of propulsion plant of liquified natural gas carrier (LNGC), including：
Double fuel fry dried food ingredients motor, double fuel fry dried food ingredients motor gas used in gas mode is as fuel and in oily pattern
Used in oil as fuel；
Frequency up converter, the frequency up converter receives electric power and supplies power to master by described from the double fuel fry dried food ingredients motor
Propulsion motor；
The main propulsion motor, the main propulsion motor is connected to the frequency up converter and by from frequency conversion conversion
Device receives electric power and rotates screw；And
Power storage unit, the power storage unit is connected to the frequency up converter, and in the main propulsion motor
Power consumption incrementss be more than or equal to first threshold when to the main engine supply electric power.
2. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 1, wherein, the first threshold is according in institute
The load for stating double fuel fry dried food ingredients motor when double fuel fry dried food ingredients motor is run with gas mode changes permissible value to determine.
3. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 1, wherein, by double fuel fry dried food ingredients electricity
When the electric power that machine is generated has residue, the power storage unit stores remaining electric power.
4. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 3, also including resistance unit, by described double
When the electric power that fuel oil generator is generated has residue, in the case where the capacity of the power storage unit is full of, the electricity
Resistance unit consumes remaining electric power.
5. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 1, wherein, in the main propulsion motor
When the variable quantity of power consumption is more than or equal to Second Threshold, the double fuel fry dried food ingredients motor is with gas mode operation.
6. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 5, wherein, in the liquefied natural gas transport
The variable quantity for occurring the power consumption of the main propulsion motor when ship is at anchor is more than or equal to the Second Threshold.
7. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 1, wherein, the frequency up converter includes：
Dc bus；
AC/DC converter, the AC/DC converter turns in the alternating current by produced by the double fuel fry dried food ingredients motor
Change direct current into and by the direct current electricity suppl to the dc bus；
AC/DC converter, the AC/DC converter is by the converting direct-current power into alternating-current power of the dc bus and incites somebody to action
The exchange electricity suppl is to the main propulsion motor；And
DC-DC converter, the DC-DC converter is connected to the dc bus.
8. the propulsion plant of liquified natural gas carrier (LNGC) according to claim 1, wherein, the power storage unit is super
Level capacitor.
9. a kind of liquified natural gas carrier (LNGC), including：
LNG tank, the LNG tank stores liquefied natural gas；
Double fuel fry dried food ingredients motor, double fuel fry dried food ingredients motor gas used in gas mode is as fuel and in oily pattern
Used in oil as fuel；
Main propulsion motor, the main propulsion motor revolves screw by receiving electric power from the double fuel fry dried food ingredients motor
Turn；And
Power storage unit, when the incrementss of the power consumption of the main propulsion motor are more than or equal to first threshold, institute
Power storage unit is stated to the main engine supply electric power,
Wherein, the double fuel fry dried food ingredients motor with gas mode run duration using being stored in the liquified natural gas carrier (LNGC)
LNG tank in boil-off gas produce electric power.
10. liquified natural gas carrier (LNGC) according to claim 9, wherein, the first threshold is according in the double fuel
The load of fry dried food ingredients motor double fuel fry dried food ingredients motor when being run with gas mode changes permissible value to determine.
A kind of 11. power supply devices of oceanographic equipment, including：
Double fuel fry dried food ingredients motor, double fuel fry dried food ingredients motor gas used in gas mode is as fuel and in oily pattern
Used in oil as fuel；
Alternating current by produced by the generator is converted into direct current by AC/DC converter, the AC/DC converter
Electricity and by the direct current electricity suppl to dc bus；
Electrical load, the electrical load is connected to the dc bus；And
Power storage unit, the power storage unit is connected to the dc bus, and in the electric power of the electrical load
The incrementss of the time per unit of consumption be more than or equal to first threshold when to the electrical load supply electric power.
The power supply device of 12. oceanographic equipments according to claim 11, wherein, disappear in the electric power of the electrical load
When the incrementss of the time per unit of consumption are more than or equal to the first threshold, the double fuel fry dried food ingredients motor is with gas mode fortune
OK.
The power supply device of 13. oceanographic equipments according to claim 11, wherein, the first threshold is according to described
The load of double fuel fry dried food ingredients motor double fuel fry dried food ingredients motor when being run with gas mode changes permissible value to determine.
The power supply device of 14. oceanographic equipments according to claim 11, wherein, by the double fuel fry dried food ingredients motor
When the electric power for being generated has residue, the power storage unit stores remaining electric power.
The power supply device of 15. oceanographic equipments according to claim 14, also including resistance unit, by double combustions
When the electric power that material fry dried food ingredients motor is generated has residue, in the case where the capacity of the power storage unit is full of, the resistance
Unit consumes remaining electric power.
The power supply device of 16. oceanographic equipments according to claim 11, wherein,
The electrical load generates regenerated electric power,
The power storage unit stores the regenerated electric power.
The power supply device of 17. oceanographic equipments according to claim 11, wherein, the electrical load sets for drilling well
It is standby.
The power supply device of 18. oceanographic equipments according to claim 11, wherein, the electrical load is propeller.
The power supply device of 19. oceanographic equipments according to claim 11, wherein, first power storage unit is
Ultracapacitor.
A kind of 20. oceanographic equipments, including：
Double fuel fry dried food ingredients motor, double fuel fry dried food ingredients motor gas used in gas mode is as fuel and in oily pattern
Used in oil as fuel；
Alternating current by produced by the generator is converted into direct current by AC/DC converter, the AC/DC converter
Electricity and by the direct current electricity suppl to dc bus；
Electrical load, the electrical load is connected to the dc bus；And
Power storage unit, the power storage unit is connected to the dc bus, and in the electric power of the electrical load
The incrementss of the time per unit of consumption be more than or equal to first threshold when to the electrical load supply electric power.
21. oceanographic equipments according to claim 20, wherein, in the time per unit of the power consumption of the electrical load
Incrementss be more than or equal to the first threshold when, the double fuel fry dried food ingredients motor with gas mode operation.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0113164 | 2014-08-28 | ||
| KR1020140113164A KR20160025814A (en) | 2014-08-28 | 2014-08-28 | Liquefied natural gas carrier and apparatus for propulsion of a liquefied natural gas carrier |
| KR1020140113166A KR101629195B1 (en) | 2014-08-28 | 2014-08-28 | Apparatus for power supply in offshore plant |
| KR10-2014-0113166 | 2014-08-28 | ||
| PCT/KR2015/003367 WO2016032084A1 (en) | 2014-08-28 | 2015-04-03 | Propulsion device of liquefied natural gas carrier, liquefied natural gas carrier, power supply device of offshore plant, and offshore plant comprising the power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106660622A true CN106660622A (en) | 2017-05-10 |
Family
ID=55399948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580046780.6A Pending CN106660622A (en) | 2014-08-28 | 2015-04-03 | Propulsion device of liquefied natural gas carrier, liquefied natural gas carrier, power supply device of offshore plant, and offshore plant comprising the power supply device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2017532239A (en) |
| CN (1) | CN106660622A (en) |
| WO (1) | WO2016032084A1 (en) |
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| CN109322738A (en) * | 2017-07-31 | 2019-02-12 | 中集海洋工程有限公司 | Retired platform is transform as to the method and the LNG generation platform of LNG generation platform |
| CN112412635A (en) * | 2020-11-16 | 2021-02-26 | 中船动力研究院有限公司 | Marine engine propulsion system and control method thereof |
| CN113629756A (en) * | 2020-05-06 | 2021-11-09 | Abb瑞士股份有限公司 | Power system for ship |
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| JP2017532239A (en) | 2017-11-02 |
| WO2016032084A1 (en) | 2016-03-03 |
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