CN216556475U - Natural gas pressure reduction device applied to LNG gas station - Google Patents
Natural gas pressure reduction device applied to LNG gas station Download PDFInfo
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- CN216556475U CN216556475U CN202122709243.0U CN202122709243U CN216556475U CN 216556475 U CN216556475 U CN 216556475U CN 202122709243 U CN202122709243 U CN 202122709243U CN 216556475 U CN216556475 U CN 216556475U
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Abstract
The utility model discloses a natural gas depressurization device applied to an LNG (liquefied natural gas) station, which relates to the technical field of depressurization of the gas station, and the key points of the technical scheme are that the natural gas depressurization device comprises a storage tank, a pressure sensor and a pressure sensor, wherein the storage tank is used for storing natural gas; the cooling chamber is used for introducing a coolant for cooling the natural gas; a cooling tube located in the cooling chamber; an inlet pipe connected to one end of the cooling pipe and used for feeding the gaseous natural gas in the storage tank into the cooling pipe; the liquid outlet pipe is connected to the other end of the cooling pipe and is used for sending the natural gas in the cooling pipe back to the storage tank; and a refrigerator for refrigerating a coolant circulation in the cooling chamber; when storage tank pressure exceeded safety limit, carry out cooling in sending into the cooling tube gaseous state natural gas circulation in the storage tank, come gaseous state natural gas cooling to liquid through the reduction of temperature to the realization need not to discharge the natural gas to the step-down of storage tank, neither can cause the waste, is difficult to again produce the pollution to the atmosphere.
Description
Technical Field
The utility model relates to the technical field of depressurization of gas stations, in particular to a natural gas depressurization device applied to an LNG (liquefied natural gas) gas station.
Background
With the wide application and rapid development of the LNG (liquefied Natural gas) technology in China, the technology and application of the LNG gas station are also rapidly developed, and the market demand is larger and larger; an LNG storage tank, which is one of the main core components of an LNG filling station, inevitably increases the pressure of the storage tank along with the daily operation of a filling station system, and when the pressure safety limit of the storage tank is reached, the pressure must be discharged and released.
However, the storage tank is decompressed by discharging and decompressing, which not only causes resource waste, but also easily causes pollution to the atmosphere.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a natural gas pressure reducing device applied to an LNG (liquefied natural gas) station, when the pressure of a storage tank exceeds a safety limit, gaseous natural gas in the storage tank is circularly sent into a cooling pipe to be cooled, and the gaseous natural gas is cooled to be in a liquid state through temperature reduction, so that the pressure reduction of the storage tank is realized, the natural gas does not need to be discharged, the waste is avoided, and the pollution to the atmosphere is not easy to generate.
In order to achieve the purpose, the utility model provides the following technical scheme: a natural gas pressure reduction device applied to an LNG (liquefied Natural gas) station comprises a storage tank, a pressure regulating valve and a pressure regulating valve, wherein the storage tank is used for storing natural gas;
the cooling chamber is used for introducing a coolant for cooling the natural gas;
a cooling tube located in the cooling chamber;
an inlet pipe connected to one end of the cooling pipe and used for feeding the natural gas in the storage tank into the cooling pipe;
the liquid outlet pipe is connected to the other end of the cooling pipe and is used for sending the natural gas in the cooling pipe back to the storage tank;
and a refrigerator for refrigerating the coolant circulation in the cooling chamber.
Through adopting above-mentioned technical scheme, when storage tank pressure exceeded safety limit, carry out cooling in sending into the cooling tube gaseous state natural gas circulation in the storage tank, come gaseous state natural gas cooling to liquid through the reduction of temperature to the realization need not to discharge the natural gas to the step-down of storage tank, neither can cause the waste, is difficult to again produce the pollution to the atmosphere.
The utility model is further configured to: the cooling tube is disposed in a serpentine shape in the cooling chamber.
Through adopting above-mentioned technical scheme, the cooling tube of snakelike arranging has increased the area of contact of cooling tube with the coolant to the cooling effect to the natural gas has been improved.
The utility model is further configured to: and the cooling pipe is fixedly connected with a plurality of temperature guide plates.
The utility model is further configured to: the heat conducting plate penetrates through the cooling pipe, and two ends of the heat conducting plate are respectively and fixedly connected to two opposite inner walls in the cooling chamber.
Through adopting above-mentioned technical scheme, lead the temperature board and can assist the cooling tube to cool down the natural gas, improved the cooling effect to the natural gas.
The utility model is further configured to: the length direction of the cooling chamber is horizontal, and the two spiral ends of the cooling pipe are respectively positioned at the positions close to the two ends of the top of the cooling chamber;
the coolant in the cooling chamber is sent into the refrigerator from one end of the cooling chamber to be cooled, and the cooled coolant is sent into the cooling chamber from the other end of the cooling chamber.
The utility model is further configured to: the drain pipe is connected at the end part of the cooling pipe close to one end of the cooling chamber for the coolant to enter, and the air inlet pipe is connected at the end part of the cooling pipe close to one end of the cooling chamber for the coolant to be sent out.
Through adopting above-mentioned technical scheme, the drain pipe is connected and is close to the tip that the coolant got into the cooling tube of cooling chamber one end can, can guarantee the low temperature of the natural gas temperature that the cooling tube sent out.
The utility model is further configured to: the intake pipe includes body and the cladding heat preservation in the body outside, and the drain pipe includes body and cladding heat preservation in the body outside.
The utility model is further configured to: one end of the air inlet pipe, which is far away from the cooling pipe, extends into the storage tank and is positioned at the position, close to the top, of the storage tank;
one end of the liquid outlet pipe, which is far away from the cooling pipe, extends into the storage tank and is positioned at the position of the storage tank, which is close to the bottom.
In summary, compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, when the pressure of the storage tank exceeds the safety limit, the natural gas in the storage tank is circularly sent into the cooling pipe for cooling, and the natural gas in the storage tank is decompressed through temperature reduction, so that the natural gas does not need to be discharged, waste is avoided, and pollution to the atmosphere is not easy to generate;
2. according to the utility model, the cooling pipes arranged in a serpentine shape increase the contact area between the cooling pipes and the coolant, so that the cooling effect on natural gas is improved;
3. according to the utility model, the heat conducting plate can assist the cooling pipe in cooling the natural gas, so that the cooling effect of the natural gas is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a schematic view of an embodiment embodying a cooling tube.
In the figure: 1. a storage tank; 11. an air inlet pipe; 12. a liquid outlet pipe; 13. an air pump; 2. a cooling chamber; 3. a cooling tube; 31. A heat conducting plate; 4. a refrigerator; 41. a communicating pipe; 42. a circulation pipe.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. mentioned in the following embodiments are directions with reference to the drawings only, and thus, the directional terms used are intended to illustrate rather than limit the inventive concept.
The utility model is further described with reference to the drawings and the preferred embodiments.
Example (b): a natural gas pressure reduction device applied to an LNG filling station is disclosed, and referring to an attached drawing 1 and an attached drawing 2, the natural gas pressure reduction device comprises a storage tank 1 for storing natural gas, a cooling chamber 2 which is arranged at one side of the storage tank 1 and is filled with a coolant, a cooling pipe 3 arranged in the cooling chamber 2, an air inlet pipe 11 which is connected to one end of the cooling pipe 3 and is used for sending gaseous natural gas in the storage tank 1 into the cooling pipe 3, a liquid outlet pipe 12 which is connected to the other end of the cooling pipe 3 and is used for sending the natural gas back to the storage tank 1 from the cooling pipe 3, and a refrigerating machine 4; the refrigerator 4 is used for sending the refrigerant after refrigeration into the cooling chamber 2, and the refrigerant in the cooling chamber 2 is sent into the refrigerator 4 for refrigeration after cooling the natural gas in the cooling pipe 3.
When the pressure of the natural gas in the storage tank 1 exceeds the safety limit, the gaseous natural gas in the storage tank 1 is sent into the cooling pipe 3 through the air inlet pipe 11, the gaseous natural gas entering the cooling pipe 3 is cooled by the coolant in the cooling chamber 2 and is cooled to be in a liquid state, and the liquid natural gas is sent into the storage tank 1 through the liquid outlet pipe 12; by cooling the natural gas to a liquid state, the volume of the natural gas can be greatly reduced, thereby reducing the pressure in the storage tank 1.
Specifically, cooling tube 3 is snakelike setting, through setting up cooling tube 3 into snakelike, can increase the area of contact of cooling tube 3 with the coolant, through increasing area of contact, can improve the cooling effect to the natural gas in the cooling tube 3.
Specifically, a plurality of temperature conducting plates 31 are fixedly connected to the cooling pipe 3, the temperature conducting plates 31 are arranged to penetrate through the cooling pipe 3, and two ends of each temperature conducting plate 31 are respectively and fixedly connected to two opposite inner walls in the cooling chamber 2; the temperature guide plate 31 can assist the cooling pipe 3 in cooling the natural gas, so that the cooling effect on the natural gas can be further improved. Specifically, the temperature guide plates 31 are arranged on the cooling pipe 3 along the serpentine direction of the cooling pipe 3.
Specifically, the length direction of the cooling chamber 2 is set to be horizontal, and the two spiral ends of the cooling pipe 3 are respectively positioned at the positions close to the two ends of the top of the cooling chamber 2; both ends of cooling chamber 2 are fixedly connected with communicating pipe 41 and circulating pipe 42 respectively, and the one end that communicating pipe 41 and circulating pipe 42 deviate from cooling chamber 2 all is fixed connection on refrigerator 4, and in the middle of refrigerator 4 sends into cooling chamber 2 through communicating pipe 41 the coolant of cooling, and the coolant after the natural gas cooling in cooling tube 3 in the middle of cooling chamber 2 is sent into in the middle of refrigerator 4 through circulating pipe 42 and is cooled.
Specifically, the liquid outlet pipe 12 is connected to one end of the cooling pipe 3 close to the communicating pipe 41, and the air inlet pipe 11 is connected to one end of the cooling pipe 3 close to the circulating pipe 42; through the setting to drain pipe 12 and intake pipe 11 position, the temperature that enters into the outer coolant of cooling tube 3 in the middle of the natural gas of cooling tube 3 when to the removal of drain pipe 12 reduces gradually to can guarantee the low temperature of the natural gas of following drain pipe 12 and locate the exhaust.
Specifically, an air pump 13 fixedly connected to the top of the cooling chamber 2 is arranged at the connection position of the air inlet pipe 11 and the cooling pipe 3, and the air inlet position and the air outlet position of the air pump 13 are respectively connected with the air inlet pipe 11 and the cooling pipe 3; natural gas is circulated between the cooling pipe 3 and the storage tank 1 by the gas pump 13.
The gas inlet pipe 11 comprises a pipe body and a heat preservation layer coated on the outer side of the pipe body, and the liquid outlet pipe 12 comprises a pipe body and a heat preservation layer coated on the outer side of the pipe body; through setting up the heat preservation for the natural gas after being cooled is difficult to absorb the heat from the external world.
Specifically, one end of the air inlet pipe 11, which is far away from the cooling pipe 3, extends into the storage tank 1 and is positioned at the position, close to the top, of the storage tank 1; one end of the liquid outlet pipe 12, which is far away from the cooling pipe 3, extends into the storage tank 1 and is positioned at the position, close to the bottom, of the storage tank 1; after the natural gas after being cooled enters into storage tank 1, because its density is higher, can move down gradually, cool down to the natural gas in the whole storage tank 1 to through continuous circulation, realize the whole cooling to the natural gas in the storage tank 1.
The working principle of the natural gas pressure reduction device applied to the LNG filling station when in use is as follows: when the pressure of the natural gas in the storage tank 1 exceeds the safety limit, the gaseous natural gas in the storage tank 1 is sent into the cooling pipe 3 through the air inlet pipe 11, the gaseous natural gas entering the cooling pipe 3 is cooled by the coolant in the cooling chamber 2 and is cooled to be in a liquid state, and the liquid natural gas is sent into the storage tank 1 through the liquid outlet pipe 12; by cooling the natural gas to a liquid state, the volume of the natural gas can be greatly reduced, thereby reducing the pressure in the storage tank 1.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (8)
1. The utility model provides a be applied to natural gas pressure reduction means of LNG gas station which characterized in that: comprising a storage tank (1) for storing natural gas;
a cooling chamber (2) for introducing a coolant for cooling natural gas;
a cooling pipe (3) located in the cooling chamber (2);
an intake pipe (11) connected to one end of the cooling pipe (3) and used for feeding the natural gas in the storage tank (1) into the cooling pipe (3);
a liquid outlet pipe (12) connected to the other end of the cooling pipe (3) and used for returning the natural gas in the cooling pipe (3) to the storage tank (1);
and a refrigerator (4) for refrigerating the coolant circulation in the cooling chamber (2).
2. The natural gas depressurization device applied to the LNG filling station of claim 1, wherein: the cooling pipe (3) is arranged in a snake shape in the cooling chamber (2).
3. The natural gas pressure reduction device applied to the LNG filling station as claimed in claim 2, wherein: a plurality of temperature guide plates (31) are fixedly connected to the cooling pipe (3).
4. The natural gas depressurization device applied to the LNG filling station of claim 3, wherein: the heat conducting plate (31) penetrates through the cooling pipe (3), and two ends of the heat conducting plate (31) are respectively and fixedly connected to two opposite inner walls in the cooling chamber (2).
5. The natural gas depressurization device applied to the LNG filling station of claim 4, wherein: the length direction of the cooling chamber (2) is horizontal, and the two spiral ends of the cooling pipe (3) are respectively positioned at the positions close to the two ends of the top of the cooling chamber (2);
the coolant in the cooling chamber (2) is sent into the refrigerator (4) from one end of the cooling chamber (2) for refrigeration, and the coolant after refrigeration is sent into the cooling chamber (2) from the other end of the cooling chamber (2).
6. The natural gas depressurization device applied to the LNG filling station of claim 5, wherein: the end part of drain pipe (12) connection at cooling tube (3) that are close to coolant entering cooling chamber (2) one end, intake pipe (11) connection is at the end part of cooling tube (3) that are close to coolant delivery cooling chamber (2) one end.
7. The natural gas depressurization device applied to the LNG filling station of claim 6, wherein: the air inlet pipe (11) comprises a pipe body and a heat preservation layer coated on the outer side of the pipe body, and the liquid outlet pipe (12) comprises a pipe body and a heat preservation layer coated on the outer side of the pipe body.
8. The natural gas depressurization device applied to the LNG filling station of claim 7, wherein: one end of the air inlet pipe (11), which is far away from the cooling pipe (3), extends into the storage tank (1) and is positioned at the position, close to the top, of the storage tank (1);
one end of the liquid outlet pipe (12) far away from the cooling pipe (3) extends into the storage tank (1) and is positioned at the position, close to the bottom, of the storage tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122709243.0U CN216556475U (en) | 2021-11-08 | 2021-11-08 | Natural gas pressure reduction device applied to LNG gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122709243.0U CN216556475U (en) | 2021-11-08 | 2021-11-08 | Natural gas pressure reduction device applied to LNG gas station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216556475U true CN216556475U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122709243.0U Active CN216556475U (en) | 2021-11-08 | 2021-11-08 | Natural gas pressure reduction device applied to LNG gas station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216556475U (en) |
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2021
- 2021-11-08 CN CN202122709243.0U patent/CN216556475U/en active Active
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