CN212079478U - Natural gas supply system for ship - Google Patents
Natural gas supply system for ship Download PDFInfo
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- CN212079478U CN212079478U CN202020503322.9U CN202020503322U CN212079478U CN 212079478 U CN212079478 U CN 212079478U CN 202020503322 U CN202020503322 U CN 202020503322U CN 212079478 U CN212079478 U CN 212079478U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000003345 natural gas Substances 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 115
- 239000007789 gas Substances 0.000 claims abstract description 114
- 239000006200 vaporizer Substances 0.000 claims abstract description 23
- 230000008016 vaporization Effects 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000011084 recovery Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 239000003949 liquefied natural gas Substances 0.000 description 130
- 238000000034 method Methods 0.000 description 7
- 238000009834 vaporization Methods 0.000 description 7
- 239000002828 fuel tank Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a marine natural gas air supply system, include: the liquid outlet of the LNG storage tank is provided with a liquid outlet pipe; an inlet of the LNG pump pool is communicated with the liquid outlet pipe, and an outlet of the LNG pump pool is provided with a liquid supply pipe; a vaporizer in communication with the feed tube for vaporizing the LNG liquid; the inlet of the buffer tank is communicated with the vaporizer, and the outlet of the buffer tank is provided with an air supply pipeline for conveying LNG gas; one end of the LNG flow dividing pipe is communicated with the liquid supply pipe, and the other end of the LNG flow dividing pipe is communicated with a liquid inlet of the LNG storage tank; the flow control valve is arranged on the LNG shunt pipe and used for controlling the flow of the LNG liquid passing through the LNG shunt pipe; the first pressure controller is arranged on the air supply pipeline and electrically connected with the flow control valve, and can detect the gas pressure in the air supply pipeline and control the opening of the flow control valve, so that the pressure-stabilizing air supply is realized for the ship power system.
Description
Technical Field
The utility model relates to a gas power technical field, in particular to marine natural gas air supply system.
Background
According to the current sulfur limit issued by the international maritime organization, the sulfur content of all ship fuel oil in the global range is required to be reduced from 3.5% to 0.5% (0.1% in the ship emission control region). The sulfur-limiting order brings unprecedented test and pressure to the shipping industry, the Liquefied Natural Gas (LNG) is rapidly popularized by virtue of the outstanding advantages of cleanness and high efficiency, but the methane greenhouse effect is 20-25 times that of carbon dioxide, and the important attention is needed. In the process of using natural gas as ship fuel, an LNG fuel gas supply system is very important, and how to ensure continuous and stable gas supply to a ship main engine and an auxiliary engine and reduce methane escape is the key of gas supply system design.
Taking an LNG power system for a certain marine vessel as an example, the LNG power system is provided with two main machines with power up to 2100KW and a 300KW generator, and the total gas consumption reaches 1000kg/h, so that the passive gas supply mode cannot meet the gas supply requirement (the passive gas supply mode is generally a differential pressure type, and an LNG immersed pump is not provided). Meanwhile, with the lengthening of the ocean voyage distance and the scarcity of filling facilities, the volume of a single LNG fuel tank tends to be large, if the design pressure of the LNG fuel tank is increased to meet the requirement of gas supply pressure, the method is a non-economic technical scheme. Therefore, the LNG gas supply system adopts the immersed pump to supply liquid continuously and stably to obtain constant flow and pressure, and as the main engine power system of the ship is always in the process of continuously changing power in the operation process, the power system meets the requirement of constant and stable gas supply and guarantees the quality of gas supply, thereby being the core of the gas supply system.
Once the low-temperature immersed pump is arranged, a low-temperature pump pool needs to be arranged at the same time so as to meet the maintenance and normal work of the immersed pump. After the power system of the ship stops using, a large amount of LNG is stored in the pump pool, and along with the vaporization of the heated LNG, the low-temperature LNG gas after partial vaporization can enter the LNG fuel tank. The low-temperature gas increases the pressure of the LNG fuel tank, increases the vaporization rate of LNG, prevents stable supply of fuel, and affects the holding time of the fuel tank. And the low-temperature LNG gas after partial vaporization is discharged to the atmosphere through a safety valve, so that the economy is greatly reduced, and the ecological environment is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a marine natural gas air supply system of air feed can be stabilized to there is the great, unable problem of stabilizing the air feed of tank internal pressure in the LNG fuel air supply system who has adopted the cryogenic pump pond among the solution prior art.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a marine natural gas supply system, comprising: the liquid outlet of the LNG storage tank is provided with a liquid outlet pipe; an inlet of the LNG pump pool is communicated with the liquid outlet pipe, and an outlet of the LNG pump pool is provided with a liquid supply pipe; a vaporizer in communication with the feed tube for vaporizing the LNG liquid; the inlet of the buffer tank is communicated with the vaporizer, and the outlet of the buffer tank is provided with an air supply pipeline for conveying LNG gas; one end of the LNG flow dividing pipe is communicated with the liquid supply pipe, and the other end of the LNG flow dividing pipe is communicated with a liquid inlet of the LNG storage tank; the flow control valve is arranged on the LNG shunt pipe and used for controlling the flow of the LNG liquid passing through the LNG shunt pipe; the first pressure controller is arranged on the gas supply pipeline and electrically connected with the flow control valve, and can detect the gas pressure in the gas supply pipeline, control the flow control valve to increase the liquid flow in the LNG shunt pipe according to the increase of the gas pressure, and control the flow control valve to reduce the liquid flow according to the reduction of the gas pressure.
According to an embodiment of the present invention, the apparatus further comprises a second pressure controller electrically connected to the flow control valve; the LNG shunt pipe is communicated with the liquid supply pipe; the second pressure controller is arranged on the liquid supply pipe; and is located upstream of the connection of the LNG shunt tube and the feed tube.
According to the utility model discloses an embodiment, first pressure controller with second pressure controller is the pressure transmitter that integrates control module and pressure detection module.
According to an embodiment of the present invention, the LNG dispenser further comprises a plurality of pneumatic control valves respectively disposed on the liquid supply pipe and the LNG flow dividing pipe; the pneumatic control valve is electrically connected with the first pressure controller.
According to the utility model discloses an embodiment, LNG storage tank inside be equipped with the shower of inlet department butt joint, the shower with the LNG shunt tubes communicates with each other.
According to an embodiment of the present invention, the LNG pump pool is further provided with a gas return port communicating a gas phase space in the pool; the gas supply system further comprises an LNG recovery pipe, one end of the LNG recovery pipe is communicated with the inlet of the vaporizer, and the other end of the LNG recovery pipe is communicated with the gas return port to convey LNG gas back into the LNG pump pool.
According to an embodiment of the present invention, the liquid dispenser further comprises a first temperature sensor and a liquid outlet controller; the first temperature sensor and the liquid outlet controller are arranged on the liquid outlet pipe at intervals, and the first temperature sensor is used for detecting the temperature of a medium flowing through the liquid outlet pipe; the liquid outlet controller is electrically connected with the first temperature sensor, can determine the type of the medium according to the measured temperature, and can turn off the liquid outlet pipe when the medium is determined to be LNG gas.
According to an embodiment of the present invention, the apparatus further comprises a plurality of second temperature sensors; the plurality of second temperature sensors are respectively arranged on the liquid supply pipe and a pipeline between the buffer tank and the vaporizer, and the second temperature sensors are electrically connected with the liquid outlet controller.
According to an embodiment of the present invention, the LNG storage tank further comprises an air return pipe, wherein two ends of the air return pipe are respectively communicated with the air inlet and the air return port of the LNG storage tank; and the two ends of the LNG recovery pipe are respectively connected and communicated with the pipe wall of the gas return pipe and the pipe wall of the LNG shunt pipe.
According to an embodiment of the present invention, the LNG supply device further comprises a heater for heating the LNG gas; one end of the heater is communicated with the outlet of the vaporizer, and the other end of the heater is communicated with the inlet of the buffer tank.
According to the above technical scheme, the utility model provides a pair of marine natural gas supply system has following advantage and positive effect at least:
this marine natural gas supply system has add buffer tank, LNG shunt tubes, flow control valve and first pressure controller for partial LNG liquid is stored in the buffer tank, and partial LNG liquid passes through LNG shunt tubes and flows back to in the LNG storage tank, has avoided liquid to store in the pump pond in a large number. Specifically, the flow control valve is interlocked with the first pressure controller. The first pressure controller can detect the gas pressure in the gas supply pipeline in real time, when the ship power system operates, the first pressure controller detects that the gas pressure in the gas supply pipeline is reduced, and then the liquid flow of the LNG shunt pipe is reduced through the flow control valve, so that most of liquid can be led to the vaporizer, and the gas supply requirement of the power system is guaranteed; when driving system stopped using, when need not the air feed, gas pressure increase in the air supply line was surveyed to first pressure controller, and then can control the liquid flow of flow control valve increase LNG shunt tubes, will follow most LNG liquid drainage that comes out in the pump pond to the LNG storage tank in, avoid a large amount of liquid to store in the pump pond, solve the gas after the liquid vaporization in the pump pond and get into the tank internal pressure increase that leads to in the storage tank, the problem of unable steady voltage air feed.
Drawings
Fig. 1 is a first structural schematic diagram of a marine natural gas supply system according to an embodiment of the present invention.
Fig. 2 is a second schematic structural diagram of the marine natural gas supply system according to the embodiment of the present invention.
The reference numerals are explained below: 100-a gas supply system, 1-an LNG storage tank, 101-a first liquid inlet, 102-a second liquid inlet, 103-a gas inlet, 11-a liquid outlet pipe, 13-a top spray pipe, 15-a liquid inlet pipe, 17-a gas return pipe, 2-an LNG pump pool, 201-a gas return port, 21-a liquid supply pipe, 22-an immersed pump, 31-a vaporizer, 32-a heater, 4-a buffer tank, 41-a gas supply pipeline, 42-a safety valve, 51-a first pressure controller, 52-a second pressure controller, 6-an LNG shunt pipe, 61-a flow control valve, 7-a pneumatic control valve, 8-an LNG recovery pipe, 91-a liquid outlet controller, 92-a first temperature sensor and 93-a second temperature sensor.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
The present embodiment provides a marine natural gas supply system 100. The natural gas supply system 100 mainly comprises equipment such as an LNG storage tank 1, an LNG pump pool 2, a vaporizer 31, a buffer tank 4 and the like, wherein the equipment is connected through process pipelines such as an LNG shunt pipe 6 and the like, and each pipeline is provided with a flow control valve 61 and a first pressure controller 51, so that the flow direction of an LNG medium is controlled, and the state of fluid is monitored, so that stable gas supply is realized for power systems such as a ship main engine and an auxiliary engine.
Referring to fig. 1, the LNG storage tank 1 of the present embodiment is horizontally disposed to store cryogenic LNG liquid. The LNG storage tank 1 is internally provided with a top spray pipe 13 and a bottom liquid inlet pipe 15, and the top of the storage tank is provided with a first liquid inlet 101 (for connecting the top spray pipe 13), a second liquid inlet 102 (for connecting the bottom liquid inlet pipe 15) and a gas inlet 103 (for communicating the gas phase space in the tank). The bottom of the storage tank is provided with a liquid outlet and a liquid outlet pipe 11 communicated with the liquid outlet.
The LNG pump pool 2 is placed vertically. The inlet of the LNG pump pool 2 is communicated with the liquid outlet pipe 11, and the outlet of the LNG pump pool is provided with a liquid supply pipe 21; the side part of the device is also provided with a pump pool air return port 201 communicated with the gas phase space in the pool. The LNG pump pool 2 is used for storing liquid from the LNG storage tank 1, and a low-temperature immersed pump 22 is installed in the pump pool. The low-temperature immersed pump 22 can deliver the LNG liquid at a rated flow rate and pressure to meet the working pressure and gas consumption requirements of the gas supply system 100, thereby realizing sustainable and stable liquid supply.
An inlet of the vaporizer 31 is communicated with the liquid supply pipe 21 for heating and vaporizing the low-temperature LNG into a low-temperature gas. In the present embodiment, the vaporizer 31 is also provided with a heater 32; one end of the heater 32 communicates with the outlet of the vaporizer 31, and the other end communicates with the inlet of the buffer tank 4. The heater 32 mainly heats the low-temperature gas to the normal-temperature gas to meet the temperature requirement of the gas supply system 100.
The inlet of the buffer tank 4 communicates with the vaporizer 31 and the outlet thereof is provided with a gas supply line 41 for delivering LNG gas to the power system on board the vessel. A large amount of LNG gas is temporarily stored in the buffer tank 4, the instantaneous high-load gas consumption requirement of a power system can be met, and meanwhile, the vaporized gas is stored in the buffer tank 4, so that frequent tripping of the safety valve 42 is avoided.
The first pressure controller 51 is disposed on the gas supply line 41, and is capable of detecting the gas pressure in the gas supply line 41 to monitor the gas supply demand in real time. The control module can control the opening of the flow control valve 61 according to the air supply demand, and can control the opening of the flow control valve 61 according to the detection value of the gas pressure of the pressure detection module so as to adjust the flow splitting quantity.
The one end and the feed pipe 21 intercommunication of LNG shunt tubes 6, the other end and the first inlet 101 intercommunication of LNG storage tank 1 to in shunting the liquid that pumps from in the LNG pump pond 2 to LNG storage tank 1, avoid LNG pump pond 2 to reduce the evaporation loss of LNG liquefied gas because of the great pressure and the higher temperature that a large amount of liquid storage lead to. And, LNG shunt tubes 6 is connected with LNG storage tank 1's top shower 13, and at gas supply system 100 operation in-process, LNG liquid sprays into the jar through the storage tank top, and its usable fresh LNG cold volume is with the interior gas recooling liquid of storage tank, reaches the effect of constantly precooling LNG storage tank 1, has reduced storage tank pressure, has improved the hold time of LNG storage tank 1, is favorable to the security of system.
The flow control valve 61 is disposed on the LNG bypass pipe 6 and is used for controlling the flow of the LNG liquid passing through the LNG bypass pipe 6. The principle is as follows: the flow control valve 61 can change the local resistance by changing the size of the valve port opening section to realize the flow control.
The flow control valve 61 is electrically connected to and controlled by the first pressure controller 51.
In the present embodiment, the first pressure controller 51 is embodied as a pressure transmitter integrated with a control module and a pressure detection module. The first pressure controller 51 can control the flow control valve 61 to decrease the liquid flow rate in the LNG bypass 6 according to a decrease in the measured gas pressure, and control the flow control valve 61 to increase the liquid flow rate according to an increase in the gas pressure, to ensure a constant and stable gas supply demand. The principle is as follows: when the ship power system operates, the gas supply requirement is high, the first pressure controller 51 measures the gas pressure in the gas supply pipeline 41 to be reduced, and then the first pressure controller controls the flow control valve 61 to reduce the valve port of the gas supply pipeline, so that the liquid flow of the LNG shunt pipe 6 is reduced, most of liquid can be led to the vaporizer 31, and the gas supply requirement of the power system is ensured. When power system stops using, when need not the air feed, first pressure controller 51 records the gas pressure increase in the air supply pipeline 41, and then can control flow control valve 61 with its valve port increase to this increase LNG shunt tubes 6's liquid flow, the LNG liquid that pumps from the pump pond can most drainage to LNG storage tank 1 in this moment, avoided a large amount of liquid to store in the pump pond, thereby the gas after having solved the vaporization of the interior liquid of pump pond gets into the interior increase of pot pressure that leads to in the storage tank, the problem of unable steady voltage air feed.
Further, the gas supply system 100 further includes a second pressure controller 52 disposed on the liquid supply pipe 21. The second pressure controller 52 is electrically connected to the flow control valve 61. The second pressure controller 52 is also a pressure transmitter integrated with a control module and a pressure sensing module. A second pressure controller 52 is located upstream of the connection of the LNG bypass pipe 6 to the supply pipe 21 for measuring the liquid pressure in the supply pipe 21 to monitor the liquid flow conditions from the LNG pump pool 2.
In this embodiment, the gas supply system 100 further includes a plurality of pneumatic control valves 7 respectively disposed on the process pipes such as the liquid supply pipe 21 and the LNG bypass pipe 6. The pneumatic control valve 7 is electrically connected to the first pressure controller 51 for opening and closing the respective pipes under the control of the first pressure controller 51.
Referring to fig. 2, the marine natural gas supply system 100 provided in this embodiment further includes a gas return pipe 17, an LNG recovery pipe 8, a first temperature sensor 92, a second temperature sensor 93, and a liquid outlet controller 91 to recover LNG liquid.
The two ends of the air return pipe 17 are respectively communicated with the air inlet 103 of the LNG storage tank 1 and the pump pool air return port 201, so as to convey the LNG gas in the pump pool into the storage tank.
One end of the LNG recovery pipe 8 communicates with the inlet of the vaporizer 31, and the other end communicates with the return air port 201. Preferably, the LNG recovery pipe 8 is connected between the gas return pipe 17 and the LNG bypass pipe 6. The LNG recovery pipe 8 is used for returning the high-pressure LNG gas from the vaporizer 31 and the buffer tank 4 to the LNG pump pool 2, and the LNG liquid in the pump pool flows back to the LNG storage tank 1 through the liquid outlet pipe 11 under the pressure difference, so that the LNG liquid is recovered. Above-mentioned LNG liquid is direct through the recovery mode of drain pipe 11, with the mode of present LNG vaporization back with LNG gas recovery to LNG fuel jar, has great difference, this can not improve storage tank pressure by a wide margin, can not influence the air feed of storage tank.
The second temperature sensor 93 has a plurality. Each of the second temperature sensors 93 is electrically connected to the liquid outlet controller 91. A plurality of second temperature sensors 93 are respectively provided on the liquid supply pipe 21 and the pipe connected between the buffer tank 4 and the vaporizer 31 to monitor the flowing state of the high-pressure gas.
To sum up, the marine natural gas supply system 100 is additionally provided with the buffer tank 4, the LNG bypass pipe 6, the flow control valve 61, and the first pressure controller 51. The LNG gas is temporarily stored in the buffer tank 4, so that the instantaneous high-load gas consumption requirement of a power system can be met, and meanwhile, the vaporized gas is stored in the buffer tank 4, so that frequent tripping of the safety valve 42 is avoided. The LNG shunt tubes 6 supply to shunt to the LNG storage tank 1 from the liquid that is pumped out in the LNG pump pond 2 in, avoid the LNG pump pond 2 to store great pressure and higher temperature that leads to because of a large amount of LNG liquid, reduce the evaporation loss of LNG liquefied gas. The flow control valve 61 is interlocked with the first pressure controller 51. The control module can control the opening of the flow control valve 61 according to the air supply requirement of the power system, and can control the opening of the flow control valve 61 according to the detection value of the gas pressure of the pressure detection module, so that the pressure-stabilizing air supply is realized.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. A marine natural gas supply system, comprising:
the liquid outlet of the LNG storage tank is provided with a liquid outlet pipe;
an inlet of the LNG pump pool is communicated with the liquid outlet pipe, and an outlet of the LNG pump pool is provided with a liquid supply pipe;
a vaporizer in communication with the feed tube for vaporizing the LNG liquid;
the inlet of the buffer tank is communicated with the vaporizer, and the outlet of the buffer tank is provided with an air supply pipeline for conveying LNG gas;
one end of the LNG flow dividing pipe is communicated with the liquid supply pipe, and the other end of the LNG flow dividing pipe is communicated with a liquid inlet of the LNG storage tank;
the flow control valve is arranged on the LNG shunt pipe and used for controlling the flow of the LNG liquid passing through the LNG shunt pipe;
the first pressure controller is arranged on the gas supply pipeline and electrically connected with the flow control valve, and can detect the gas pressure in the gas supply pipeline, control the flow control valve to increase the liquid flow in the LNG shunt pipe according to the increase of the gas pressure, and control the flow control valve to reduce the liquid flow according to the reduction of the gas pressure.
2. The gas supply system according to claim 1, wherein:
the second pressure controller is electrically connected with the flow control valve;
the LNG shunt pipe is communicated with the liquid supply pipe; the second pressure controller is arranged on the liquid supply pipe; and is located upstream of the connection of the LNG shunt tube and the feed tube.
3. The gas supply system according to claim 2, wherein:
the first pressure controller and the second pressure controller are both pressure transmitters integrated with a control module and a pressure detection module.
4. The gas supply system according to claim 1, wherein:
the LNG distribution pipe is arranged on the LNG tank and comprises a liquid supply pipe and an LNG distribution pipe;
the pneumatic control valve is electrically connected with the first pressure controller.
5. The gas supply system according to claim 1, wherein:
the inside shower that is equipped with of LNG storage tank with the butt joint of inlet port department, the shower with the LNG shunt tubes communicates with each other.
6. The gas supply system according to claim 1, wherein:
the LNG pump pool is also provided with an air return port communicated with a gas phase space in the pool;
the gas supply system further comprises an LNG recovery pipe, one end of the LNG recovery pipe is communicated with the inlet of the vaporizer, and the other end of the LNG recovery pipe is communicated with the gas return port to convey LNG gas back into the LNG pump pool.
7. The gas supply system according to claim 6, wherein:
the device also comprises a first temperature sensor and a liquid outlet controller;
the first temperature sensor and the liquid outlet controller are arranged on the liquid outlet pipe at intervals, and the first temperature sensor is used for detecting the temperature of a medium flowing through the liquid outlet pipe; the liquid outlet controller is electrically connected with the first temperature sensor, can determine the type of the medium according to the measured temperature, and can turn off the liquid outlet pipe when the medium is determined to be LNG gas.
8. The gas supply system according to claim 7, wherein:
a plurality of second temperature sensors;
the plurality of second temperature sensors are respectively arranged on the liquid supply pipe and a pipeline between the buffer tank and the vaporizer, and the second temperature sensors are electrically connected with the liquid outlet controller.
9. The gas supply system according to claim 6, wherein:
the LNG storage tank is characterized by further comprising an air return pipe, wherein two ends of the air return pipe are respectively communicated with an air inlet and an air return port of the LNG storage tank;
and the two ends of the LNG recovery pipe are respectively connected and communicated with the pipe wall of the gas return pipe and the pipe wall of the LNG shunt pipe.
10. The gas supply system according to claim 1, wherein:
the LNG heating device also comprises a heater for heating the LNG gas;
one end of the heater is communicated with the outlet of the vaporizer, and the other end of the heater is communicated with the inlet of the buffer tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503322.9U CN212079478U (en) | 2020-04-08 | 2020-04-08 | Natural gas supply system for ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503322.9U CN212079478U (en) | 2020-04-08 | 2020-04-08 | Natural gas supply system for ship |
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| CN212079478U true CN212079478U (en) | 2020-12-04 |
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| CN202020503322.9U Active CN212079478U (en) | 2020-04-08 | 2020-04-08 | Natural gas supply system for ship |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006975A (en) * | 2021-03-05 | 2021-06-22 | 长江三星能源科技股份有限公司 | Ship LNG supply system simulation and test device |
| CN113586292A (en) * | 2021-07-07 | 2021-11-02 | 湖北汉瑞景汽车智能系统有限公司 | Gas pressure stabilizing and adjusting system and adjusting method thereof |
| CN115478959A (en) * | 2021-06-15 | 2022-12-16 | 南通中集能源装备有限公司 | Liquid fuel conveying mechanism and ship |
-
2020
- 2020-04-08 CN CN202020503322.9U patent/CN212079478U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006975A (en) * | 2021-03-05 | 2021-06-22 | 长江三星能源科技股份有限公司 | Ship LNG supply system simulation and test device |
| CN115478959A (en) * | 2021-06-15 | 2022-12-16 | 南通中集能源装备有限公司 | Liquid fuel conveying mechanism and ship |
| CN113586292A (en) * | 2021-07-07 | 2021-11-02 | 湖北汉瑞景汽车智能系统有限公司 | Gas pressure stabilizing and adjusting system and adjusting method thereof |
| CN113586292B (en) * | 2021-07-07 | 2024-07-02 | 湖北汉瑞景汽车智能系统有限公司 | Gas pressure stabilizing and regulating system and regulating method thereof |
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