CN222597385U - A device for recovering boil-off gas of liquefied natural gas - Google Patents
A device for recovering boil-off gas of liquefied natural gas Download PDFInfo
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- CN222597385U CN222597385U CN202421131896.2U CN202421131896U CN222597385U CN 222597385 U CN222597385 U CN 222597385U CN 202421131896 U CN202421131896 U CN 202421131896U CN 222597385 U CN222597385 U CN 222597385U
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Abstract
The utility model discloses a recycling device of liquefied natural gas evaporated gas, which relates to the technical field of liquefied natural gas and comprises a storage tank, wherein a support column is fixedly connected below the storage tank, a compressor is arranged on one side above the storage tank, a suction pipe is fixedly connected to the suction end of the compressor, a refrigerating tank is fixedly connected to the output end of the compressor, a cooling device is arranged above the refrigerating tank, a guide pipe is fixedly connected to one end, far away from the compressor, of the refrigerating tank, a filter box is fixedly connected to one side of the guide pipe, a filtering device is arranged on the inner wall of the filter box, and a discharge pipe is fixedly connected to one side of the filter box. The filter screen can be replaced through the filter box and the filter device, the practicability of the device is improved, the refrigerating tank and the cooling device are arranged, the heat exchange area is improved, the cooling efficiency is improved, and the recovery efficiency of the evaporated gas is greatly improved.
Description
Technical Field
The utility model relates to the technical field of liquefied natural gas, in particular to a device for recycling liquefied natural gas evaporation gas.
Background
Liquefied Natural Gas (LNG) is a method of liquefying natural gas by reducing the temperature of natural gas to about-162 ℃ to reduce its volume and facilitate storage and transportation. However, LNG may be vaporized due to a change in ambient temperature during storage and transportation, resulting in vapor, which may not only cause waste of energy but also affect the environment and safety if not properly handled.
The liquefied natural gas evaporation gas recycling device comprises a liquefied natural gas storage tank, liquefied natural gas, a recycling mechanism and a pressure monitoring device, wherein supporting legs are welded at the bottom of the liquefied natural gas storage tank and fixedly connected with anti-skid foot pads, the liquefied natural gas is arranged inside the liquefied natural gas storage tank, the evaporation gas is arranged above the liquefied natural gas, the recycling mechanism is arranged above the evaporation gas, the filtering mechanism is arranged above the recycling mechanism, the pressure monitoring device is arranged on one side of the liquefied natural gas storage tank, and a control system is arranged above the pressure monitoring device. This liquefied natural gas vapor recycling device is provided with recovery mechanism and filtering mechanism, is convenient for retrieve liquefied natural gas vapor through recovery mechanism, and filtering mechanism is convenient for carry out filtration to liquefied natural gas, avoids directly discharging in the air and can cause the pollution to the environment, and this kind of mode is comparatively simple, convenient to use.
The device can't change filtering mechanism in long-time use to reduced the flexibility of device, secondly the device liquefies the gas of evaporation through condensing heat exchanger, but refrigeration efficiency is not high, can't be totally effectual liquefy evaporation gas.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a recycling device of liquefied natural gas evaporated gas, which can replace a filter screen by arranging a filter box and a filter device, improves the practicability of the device, improves the heat exchange area by arranging a refrigerating tank and a cooling device, improves the cooling efficiency, and greatly improves the recycling efficiency of the evaporated gas.
The utility model also provides a recycling device of the liquefied natural gas evaporation gas, which comprises a storage tank, wherein a support column is fixedly connected below the storage tank, a compressor is arranged on one side above the storage tank, a suction pipe is fixedly connected with a suction end of the compressor, a refrigerating tank is fixedly connected with an output end of the compressor, a cooling device is arranged above the refrigerating tank, a guide pipe is fixedly connected with one end, far away from the compressor, of the refrigerating tank, a filter tank is fixedly connected with one side of the guide pipe, a filter device is arranged on the inner wall of the filter tank, and a discharge pipe is fixedly connected with one side of the filter tank. The filter screen can be replaced through the filter box and the filter device, the practicability of the device is improved, the refrigerating tank and the cooling device are arranged, the heat exchange area is improved, the cooling efficiency is improved, and the recovery efficiency of the evaporated gas is greatly improved.
According to the recycling device of liquefied natural gas vapor, the cooling device comprises a refrigeration box fixedly connected to the upper portion of the refrigeration tank, a water pump is fixedly connected to one side of the refrigeration box, a circulating pipe is fixedly connected to the output end of the water pump, the circulating pipe penetrates through one end of the refrigeration tank and is fixedly connected with a refrigeration pipe, and one end, away from the circulating pipe, of the refrigeration pipe is fixedly connected with a return pipe.
According to the recycling device of liquefied natural gas evaporation gas, the filtering device comprises a chute arranged on one side of the filtering box, a support is connected in a sliding manner in the chute, and a plurality of filter screens are connected to the inner wall of the support in a clamping manner.
According to the liquefied natural gas vapor recycling device, the refrigeration pipe is spiral in shape, and one end of the return pipe penetrates through the refrigeration tank and is fixedly connected to one side of the refrigeration tank.
According to the recycling device of liquefied natural gas evaporation gas, a handle is fixedly connected to one side of the support, and a sealing gasket is arranged at the joint of the support and the sliding groove.
According to the liquefied natural gas vapor recycling device, a control valve is arranged above the suction pipe, the guide pipe and the discharge pipe.
According to the recycling device of liquefied natural gas evaporated gas, the number of the support columns is three, and the three support columns are symmetrically distributed.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a side perspective view of a liquefied natural gas vapor recovery device of the present utility model;
FIG. 2 is a perspective view of the front view of a liquefied natural gas vapor recovery device according to the present utility model;
FIG. 3 is a rear perspective view of a liquefied natural gas vapor recovery device according to the present utility model;
Fig. 4 is a schematic diagram of the internal structure of a refrigeration tank of a liquefied natural gas vapor recycling device according to the present utility model.
Legend description:
1. The device comprises a storage tank, 2, a support column, 3, a compressor, 4, a suction pipe, 5, a refrigerating tank, 6, a cooling device, 7, a conduit, 8, a filter box, 9, a filtering device, 10, a discharge pipe, 601, a refrigerating box, 602, a water pump, 603, a circulating pipe, 604, a refrigerating pipe, 605, a return pipe, 901, a chute, 902, a bracket, 903, a filter screen, 9021 and a handle.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
Referring to fig. 1-4, the recycling device for liquefied natural gas evaporation gas comprises a storage tank 1, wherein support columns 2 are fixedly connected to the lower portion of the storage tank 1, the number of the support columns 2 is three, the three support columns 2 are symmetrically distributed, the stability of the storage tank 1 is improved through the support columns 2, a compressor 3 is arranged on one side above the storage tank 1, a suction pipe 4 is fixedly connected to the suction end of the compressor 3, a refrigerating tank 5 is fixedly connected to the output end of the compressor 3, a cooling device 6 is arranged above the refrigerating tank 5, a guide pipe 7 is fixedly connected to one end, far away from the compressor 3, of the refrigerating tank 5, a filter box 8 is fixedly connected to one side of the guide pipe 7, a filtering device 9 is arranged on the inner wall of the filter box 8, a discharge pipe 10 is fixedly connected to one side of the filter box 8, and a control valve is arranged above the suction pipe 4, the guide pipe 7 and the discharge pipe 10.
The cooling device 6 comprises a refrigerating box 601 fixedly connected above the refrigerating tank 5, a water pump 602 is fixedly connected to one side of the refrigerating box 601, a circulating pipe 603 is fixedly connected to the output end of the water pump 602, the circulating pipe 603 penetrates through one end of the refrigerating tank 5 and is fixedly connected with a refrigerating pipe 604, the shape of the refrigerating pipe 604 is spiral, one end, away from the circulating pipe 603, of the refrigerating pipe 604 is fixedly connected with a return pipe 605, and one end of the return pipe 605 penetrates through one side of the refrigerating tank 5 and is fixedly connected with the refrigerating box 601.
The filtering device 9 comprises a chute 901 arranged on one side of the filtering box 8, a support 902 is connected in the chute 901 in a sliding way, a handle 9021 is fixedly connected on one side of the support 902, a sealing gasket is arranged at the joint of the support 902 and the chute 901, and a plurality of filter screens 903 are connected on the inner wall of the support 902 in a clamping way. The filter screen 903 can be replaced by the aid of the filter box 8 and the filter device 9, practicability of the device is improved, heat exchange area is improved by the aid of the refrigerating tank 5 and the cooling device 6, cooling efficiency is improved, and recovery efficiency of evaporated gas is greatly improved.
The working principle is that when the liquefied natural gas LNG storage tank is used for storing LNG for the first time, LNG can generate evaporation gas due to the influence of ambient temperature in the storage process, the suction pipe 4 is output through the suction end of the compressor 3 to extract the gas evaporated by LNG in the storage tank 1, the compressor 3 compresses the evaporation gas and inputs the evaporation gas into the refrigeration tank 5, the water pump 602 is started to pump water from the refrigeration tank 601 and output the evaporation gas into the circulation pipe 603 and pass through the refrigeration pipe 604 and the return pipe 605, so that the refrigeration water circulates, meanwhile, the refrigeration pipe 604 is in a spiral shape to greatly increase the heat exchange area, the cooling efficiency is improved, the evaporated gas is liquefied, the liquefied LNG is conveyed into the filter tank 8 through the guide pipe 7, the filtered liquefied natural gas is discharged into the storage tank 1 through the discharge pipe 10 after being filtered by the plurality of filter screens 903 in the filter tank 8, and then when the filter screens 903 need to be cleaned, the handle 9021 can be pulled to pump the support 902 from the filter tank 8, so that the filter screens can be cleaned or replaced conveniently.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (7)
1. The utility model provides a device for recycling liquefied natural gas vapor, includes holding vessel (1), its characterized in that, the below fixedly connected with support column (2) of holding vessel (1), top one side of holding vessel (1) is provided with compressor (3), the suction end fixedly connected with draft tube (4) of compressor (3), the output fixedly connected with refrigeration jar (5) of compressor (3), the top of refrigeration jar (5) is provided with cooling device (6), the one end fixedly connected with pipe (7) of compressor (3) are kept away from to refrigeration jar (5), one side fixedly connected with rose box (8) of pipe (7), the inner wall of rose box (8) is provided with filter equipment (9), one side fixedly connected with discharge pipe (10) of rose box (8).
2. The recycling device of liquefied natural gas (lng) according to claim 1, wherein the cooling device (6) comprises a refrigeration tank (601) fixedly connected to the upper portion of the refrigeration tank (5), one side of the refrigeration tank (601) is fixedly connected with a water pump (602), an output end of the water pump (602) is fixedly connected with a circulating pipe (603), the circulating pipe (603) penetrates through one end of the refrigeration tank (5) and is fixedly connected with a refrigeration pipe (604), and one end, far away from the circulating pipe (603), of the refrigeration pipe (604) is fixedly connected with a return pipe (605).
3. The liquefied natural gas vapor recycling device according to claim 1, wherein the filtering device (9) comprises a chute (901) arranged on one side of the filtering box (8), a support (902) is connected in a sliding manner in the chute (901), and a plurality of filter screens (903) are connected to the inner wall of the support (902) in a clamping manner.
4. The lng vapor recovery device according to claim 2, wherein the refrigeration pipe (604) has a spiral shape, and one end of the return pipe (605) penetrates through the refrigeration tank (5) and is fixedly connected to one side of the refrigeration tank (601).
5. A recycling device for lng vapor according to claim 3, characterized in that a handle (9021) is fixedly connected to one side of the bracket (902), and a sealing gasket is provided at the connection between the bracket (902) and the chute (901).
6. The lng boil-off gas recycling apparatus according to claim 1, wherein control valves are provided above the draft tube (4), the guide tube (7) and the discharge tube (10).
7. The device for recycling liquefied natural gas vapor according to claim 1, wherein the number of the support columns (2) is three, and the three support columns (2) are symmetrically distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421131896.2U CN222597385U (en) | 2024-05-23 | 2024-05-23 | A device for recovering boil-off gas of liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421131896.2U CN222597385U (en) | 2024-05-23 | 2024-05-23 | A device for recovering boil-off gas of liquefied natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222597385U true CN222597385U (en) | 2025-03-11 |
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ID=94853585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421131896.2U Active CN222597385U (en) | 2024-05-23 | 2024-05-23 | A device for recovering boil-off gas of liquefied natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222597385U (en) |
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2024
- 2024-05-23 CN CN202421131896.2U patent/CN222597385U/en active Active
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