CN211146070U - Marine liquefied natural gas fuel filling system - Google Patents
Marine liquefied natural gas fuel filling system Download PDFInfo
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- CN211146070U CN211146070U CN201921865693.5U CN201921865693U CN211146070U CN 211146070 U CN211146070 U CN 211146070U CN 201921865693 U CN201921865693 U CN 201921865693U CN 211146070 U CN211146070 U CN 211146070U
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Abstract
The utility model discloses a marine liquefied natural gas fuel filling system, including liquefied natural gas storage tank, liquefied natural gas cooling line, boil-off gas return line and filling pipeline. The utility model discloses a marine liquefied natural gas fuel filling system utilizes the filling pipeline to link to receive the filling ship and carry out the operation of liquefied natural gas filling, cools off the liquefaction through the natural gas of liquefied natural gas cooling line in to the liquefied natural gas storage tank, retrieves the natural gas of the inboard gas of filling through the boil-off gas return line and makes it spray the liquefaction, not only reduces the natural gas and discharges, has protected the environment, has still improved filling efficiency and natural gas liquefaction throughput, has still ensured the safety of filling operation.
Description
Technical Field
The utility model relates to a marine fuel supplies technical field, concretely relates to marine liquefied natural gas fuel filling system.
Background
Liquefied natural gas is increasingly used by shipping companies as a fuel for ships because of its advantages such as low pollution. In recent years, the technology of supplying fuel to ships using lng as fuel has been rapidly developed, and the technology is very important as an lng refueling technology for promoting the development of lng-fueled ships.
Because the liquefied natural gas inner pipelines and equipment can be precooled and the liquefied natural gas fuel tank temperature of the injected ship is high in the liquefied natural gas filling process, the ship can easily generate a large amount of evaporated gas of the liquefied natural gas in the fuel filling process. If the liquefied natural gas filling system cannot effectively process the boil-off gas, a large amount of natural gas emission is generated, so that the filling economy is reduced, and the greenhouse effect and the safety of the liquefied natural gas filling operation are very unfavorable.
However, the existing liquefied natural gas filling system for the ship has the problems of low filling efficiency, poor natural gas cooling treatment effect and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a marine liquefied natural gas fuel filling system for solve the filling inefficiency of current marine liquefied natural gas filling system and the unsatisfactory scheduling problem of natural gas cooling treatment effect.
The utility model discloses a marine liquefied natural gas fuel filling system, including liquefied natural gas storage tank, liquefied natural gas cooling pipeline, boil-off gas return gas pipeline and filling pipeline, be provided with liquefied natural gas filling export, liquefied natural gas cooling export, boil-off gas return gas import and liquefied natural gas cooling import on the liquefied natural gas storage tank, the high temperature inlet and the low temperature liquid outlet of liquefied natural gas cooling pipeline respectively with liquefied natural gas cooling export and liquefied natural gas cooling import of liquefied natural gas storage tank are linked together, be provided with the recooling device on the liquefied natural gas cooling pipeline; a liquid inlet of the filling pipeline is communicated with a liquefied natural gas filling outlet of the liquefied natural gas storage tank, a liquefied natural gas pump is arranged on the filling pipeline, and a liquid outlet end of the filling pipeline is provided with a filling main pipe joint; the gas outlet of the evaporation gas return pipeline is communicated with the evaporation gas return inlet, and the liquid inlet end of the evaporation gas return pipeline is provided with a return gas main pipe joint; and a spraying device is arranged at the upper part in the liquefied natural gas storage tank.
Preferably, a stop valve is arranged on the filling pipeline butted with the filling main pipe joint; and a stop valve is arranged on the evaporation gas return pipeline butted with the return gas main pipe joint.
Preferably, stop valves are arranged on the liquefied natural gas cooling pipeline in butt joint with the liquefied natural gas cooling outlet and the liquefied natural gas cooling inlet, and stop valves are arranged on the evaporation gas return pipeline in butt joint with the evaporation gas return inlet and the filling pipeline in butt joint with the liquefied natural gas filling outlet.
Preferably, the marine liquefied natural gas fuel filling system further comprises a connecting device and a dry quick connector, and the filling main pipe connector is butted with the dry quick connector through the connecting device.
Preferably, the connection device is a connection hose or a filling robot arm.
Preferably, the marine liquefied natural gas fuel filling system further comprises a filling pipeline self-circulation branch line and a filling ship self-circulation branch line, and a liquid inlet end and a liquid outlet end of the filling pipeline self-circulation branch line are respectively communicated with a liquid outlet and an liquefied natural gas cooling inlet of the liquefied natural gas pump; the liquid inlet end and the liquid outlet end of the self-circulation branch line of the filling ship are respectively communicated with the liquid outlet of the air return main pipe joint and the liquid inlet of the filling main pipe joint; stop valves are arranged on the self-circulation branch line of the filling pipeline and the self-circulation branch line of the filling ship.
The utility model has the advantages that:
the utility model discloses a marine liquefied natural gas fuel filling system utilizes the filling pipeline to link to receive the filling ship and carry out the operation of liquefied natural gas filling, cools off the liquefaction through the natural gas in liquefied natural gas cooling line to the liquefied natural gas storage tank, retrieves the natural gas of the inboard gas of filling through the boil-off gas return line and makes it spray the liquefaction, not only reduces the natural gas and discharges, has protected the environment, has still improved filling efficiency and natural gas liquefaction throughput, has still ensured the safety of filling operation.
Drawings
Fig. 1 is a schematic structural diagram of a marine liquefied natural gas fuel filling system provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a marine liquefied natural gas fuel filling system provided in embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a marine liquefied natural gas fuel filling system according to embodiment 3 of the present invention.
Detailed Description
Example 1
Referring to fig. 1, the lng refueling system for ships includes an lng tank 4, an lng cooling line 2, a boil-off gas return line 11, and a refueling line 6,
the liquefied natural gas storage tank 4 is provided with a liquefied natural gas filling outlet 41, a liquefied natural gas cooling outlet 42, an evaporation gas return inlet 43 and a liquefied natural gas cooling inlet 44;
the high-temperature liquid inlet and the low-temperature liquid outlet of the liquefied natural gas cooling pipeline 2 are respectively communicated with a liquefied natural gas cooling outlet 42 and a liquefied natural gas cooling inlet 44 of the liquefied natural gas storage tank 4.
The lng cooling line 2 is provided with a sub-cooling device 1, the sub-cooling device 1 being of the prior art, and in this particular embodiment the sub-cooling device 1 is of the type TBF-1050 of the series of TBFs of Air L iquide, a french advanced lng.
In order to control the inlet and outlet of the liquefied natural gas in the liquefied natural gas cooling pipeline 2, the liquefied natural gas cooling pipeline 2 in butt joint with the liquefied natural gas cooling outlet 42 and the liquefied natural gas cooling inlet 44 is provided with the stop valve 3, and the stop valve 3 is a low-temperature stop valve, which belongs to the prior art, has the advantages of flexible opening and closing and reliable sealing, is suitable for a management system of low-temperature liquid storage and transportation equipment, and has the temperature range of-200 ℃ to-165 ℃. In a specific embodiment, the temperature of the liquefied natural gas flowing into the high-temperature liquid inlet of the liquefied natural gas cooling pipeline 2 is-140 ℃, and the temperature of the liquefied natural gas flowing out of the low-temperature liquid outlet of the liquefied natural gas cooling pipeline 2 after being cooled by the sub-cooling device 1 is-165 ℃.
A liquid inlet of the filling pipeline 6 is communicated with a liquefied natural gas filling outlet 41 of the liquefied natural gas storage tank 4, and a stop valve 3 is arranged on the filling pipeline 6 which is in butt joint with the liquefied natural gas filling outlet 41. The filling pipeline 6 is provided with a liquefied natural gas pump 5, the liquid outlet end of the filling pipeline 6 is provided with a filling main pipe joint 7, and the liquid inlet of the filling main pipe joint 7 is communicated with the liquid inlet pipe of the injected ship. And a stop valve 3 for controlling the air inlet of the filling main pipe joint 7 is arranged on the filling pipeline 6 butted with the filling main pipe joint 7.
The gas outlet of the boil-off gas return pipeline 11 is communicated with the boil-off gas return inlet 43 of the liquefied natural gas storage tank 4, and the boil-off valve 3 is arranged on the boil-off gas return pipeline 11 which is in butt joint with the boil-off gas return inlet 43. The liquid inlet end of the evaporation gas return pipeline 11 is provided with a return air main joint 10, and the liquid outlet of the return air main joint 10 is communicated with the liquid outlet pipe of the injected ship. In order to control the air return of the air return main joint 10 conveniently, a stop valve 3 for controlling the air inlet of the air return main joint 10 is arranged on the evaporation gas return pipeline 11 butted with the air return main joint 10.
In order to cool the gaseous natural gas or the high-temperature liquefied natural gas evaporated to the upper part in the liquefied natural gas storage tank 4, a spraying device 40 is arranged at the upper part in the liquefied natural gas storage tank 4, and the spraying device 40 is a conventional technical means and comprises a plurality of spray heads and spray pipes, wherein a low-temperature body flows in the spray pipes, and the low-temperature body is sprayed out from the spray heads to cool the gaseous natural gas or the high-temperature liquefied natural gas and return the gaseous natural gas or the high-temperature liquefied natural gas to the liquefied natural gas storage tank 4 again.
Example 2
In order to improve the filling efficiency of the liquefied natural gas, on the basis of the marine liquefied natural gas fuel filling system provided in example 1, example 2 improves the filling manifold joint 7 of the filling pipeline 6, and the improvement is that:
referring to fig. 2, the marine lng refueling system further includes a connection device 8 and a dry quick connector 9, the refueling manifold connector 7 is butted with the dry quick connector 9 through the connection device 8, wherein the connection device 8 may be a connection hose or a refueling mechanical arm. In order to cope with emergency situations such as fire or bad sea conditions during filling operations, the connecting device 8 is provided with emergency disengaging means. If the emergency disconnection between the filling ship and the filled ship is urgently needed, the emergency disconnection device can protect the connecting equipment 8 from being damaged and can safely disconnect under the condition that less liquefied natural gas leakage is generated. Wherein, the liquid inlet of the dry-type quick joint 9 is used for being communicated with a liquid inlet pipe of the injected ship.
Example 3
In order to improve the natural gas fuel utilization rate and prevent the leakage of natural gas in the marine liquefied natural gas refueling system, the marine liquefied natural gas refueling system further comprises a refueling pipeline self-circulation branch line 12 and a refueling ship self-circulation branch line 13.
Referring to fig. 3, the liquid inlet end and the liquid outlet end of the filling pipeline self-circulation branch line 12 are respectively communicated with the liquid outlet of the lng pump 5 and the lng cooling inlet 44, so as to facilitate the high-temperature natural gas liquid or gas which comes out of the lng filling outlet 41 and enters the filling pipeline 6, the connection device 8, and the liquid inlet pipe of the ship to be filled, and which is communicated with the filling pipeline, to return to the lng storage tank 4 from the filling pipeline self-circulation branch line 12 through the lng cooling inlet 44, and to return to the lng storage tank 4 after being cooled by spraying of the spraying device 40.
The liquid inlet end and the liquid outlet end of the self-circulation branch line 13 of the filling ship are respectively communicated with the liquid outlet of the air return main pipe joint 10 and the liquid inlet of the filling main pipe joint 7. The function of the self-circulation branch line 13 of the filling ship is similar to that of the self-circulation branch line 12 of the filling pipeline, namely, the natural gas in the return gas main pipe joint 10 and the liquid outlet pipe communicated with the return gas main pipe joint and the filled ship sequentially passes through the self-circulation branch line 13 of the filling ship and the self-circulation branch line 12 of the filling pipeline and returns to the liquefied natural gas storage tank 4.
In order to control the natural gas circulation condition of the two branches conveniently, stop valves 3 are arranged on the filling pipeline self-circulation branch line 12 and the filling ship self-circulation branch line 13.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A marine liquefied natural gas fuel filling system is characterized by comprising a liquefied natural gas storage tank (4), a liquefied natural gas cooling pipeline (2), an evaporation gas return pipeline (11) and a filling pipeline (6),
the liquefied natural gas storage tank (4) is provided with a liquefied natural gas filling outlet (41), a liquefied natural gas cooling outlet (42), an evaporated gas return inlet (43) and a liquefied natural gas cooling inlet (44),
a high-temperature liquid inlet and a low-temperature liquid outlet of the liquefied natural gas cooling pipeline (2) are respectively communicated with a liquefied natural gas cooling outlet (42) and a liquefied natural gas cooling inlet (44) of the liquefied natural gas storage tank (4), and a re-cooling device (1) is arranged on the liquefied natural gas cooling pipeline (2);
a liquid inlet of the filling pipeline (6) is communicated with a liquefied natural gas filling outlet (41) of the liquefied natural gas storage tank (4), a liquefied natural gas pump (5) is arranged on the filling pipeline (6), and a filling main pipe joint (7) is arranged at a liquid outlet end of the filling pipeline (6);
the gas outlet of the evaporation gas return pipeline (11) is communicated with the evaporation gas return inlet (43), and the liquid inlet end of the evaporation gas return pipeline (11) is provided with a return gas main pipe joint (10);
and a spraying device (40) is arranged at the upper part in the liquefied natural gas storage tank (4).
2. The marine liquefied natural gas fueling system of claim 1,
a stop valve (3) is arranged on the filling pipeline (6) which is butted with the filling main pipe joint (7);
and a stop valve (3) is arranged on the evaporation gas return pipeline (11) which is in butt joint with the return gas main joint (10).
3. The marine liquefied natural gas fueling system of claim 1,
a stop valve (3) is arranged on the liquefied natural gas cooling pipeline (2) which is in butt joint with the liquefied natural gas cooling outlet (42) and the liquefied natural gas cooling inlet (44),
and stop valves (3) are arranged on the evaporation gas return pipeline (11) butted with the evaporation gas return inlet (43) and on the filling pipeline (6) butted with the liquefied natural gas filling outlet (41).
4. The marine liquefied natural gas fueling system of claim 1,
the marine liquefied natural gas fuel filling system further comprises a connecting device (8) and a dry quick connector (9), and the filling main pipe connector (7) is in butt joint with the dry quick connector (9) through the connecting device (8).
5. The marine liquefied natural gas fueling system of claim 4,
the connecting equipment (8) is a connecting hose or a filling mechanical arm.
6. The marine liquefied natural gas fueling system according to any one of claims 1 to 5,
the marine liquefied natural gas fuel filling system also comprises a filling pipeline self-circulation branch line (12) and a filling ship self-circulation branch line (13),
the liquid inlet end and the liquid outlet end of the filling pipeline self-circulation branch line (12) are respectively communicated with the liquid outlet of the liquefied natural gas pump (5) and the liquefied natural gas cooling inlet (44);
the liquid inlet end and the liquid outlet end of the self-circulation branch line (13) of the filling ship are respectively communicated with the liquid outlet of the air return main pipe joint (10) and the liquid inlet of the filling main pipe joint (7);
and stop valves (3) are arranged on the filling pipeline self-circulation branch line (12) and the filling ship self-circulation branch line (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865693.5U CN211146070U (en) | 2019-11-01 | 2019-11-01 | Marine liquefied natural gas fuel filling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865693.5U CN211146070U (en) | 2019-11-01 | 2019-11-01 | Marine liquefied natural gas fuel filling system |
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| Publication Number | Publication Date |
|---|---|
| CN211146070U true CN211146070U (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921865693.5U Active CN211146070U (en) | 2019-11-01 | 2019-11-01 | Marine liquefied natural gas fuel filling system |
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| Country | Link |
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| CN (1) | CN211146070U (en) |
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- 2019-11-01 CN CN201921865693.5U patent/CN211146070U/en active Active
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Effective date of registration: 20210205 Address after: 100028 Block C, yard 6, Taiyanggong South Street, Chaoyang District, Beijing Patentee after: CNOOC GAS & POWER GROUP Co.,Ltd. Address before: 100027 Block C, yard 6, Taiyanggong South Street, Chaoyang District, Beijing Patentee before: CNOOC GAS & POWER GROUP Co.,Ltd. Patentee before: WUHAN RULES & Research Institute OF CHINA CLASSIFICATION SOC |