Natural gas compression and recovery device applied to LNG (Liquefied Natural Gas) storage and distribution station

Abstract

The utility model discloses a natural gas compression and recovery device applied to an LNG (Liquefied Natural Gas) storage and distribution station, which relates to the technical field of urban natural gas recovery and comprises a working box, a discharge pipe fixedly connected with one side of the surface of the working box and a discharge pipe fixed on the top surface of the working box. Natural gas enters the working box through the exhaust pipe, enters the bottom of the working box through the partition plate and then passes through the dust collecting net, dust can be isolated by the dust collecting net, and clean natural gas enters the dust collecting net, then enters the top of the interior of the working box through the connecting pipe and finally is exhausted through the exhaust pipe. When the dust collecting net is full of dust, compressed air is introduced through a communicating pipe and is uniformly transmitted to a plurality of compression pipes through a compression box, and then the compressed air is discharged through an inlet pipe, so that the dust on the surface of the dust collecting net is knocked down into the dust collecting box, and the device has the functions of isolating solid particles contained in natural gas; and the particles are effectively stored, so that the using effect of the device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of urban natural gas recovery technology, and in particular to a natural gas compression and recovery device applied to LNG storage and distribution stations. Background Technology

[0002] With the development of China's economy, the demand for energy is increasing day by day, and the application of liquefied natural gas in China is booming. For LNG receiving stations and liquefaction plants, LNG storage tanks and pipelines inevitably absorb external heat, generating a large amount of low-temperature natural gas. If the low-temperature natural gas cannot be effectively recycled and utilized and is directly emitted into the atmosphere, it will not only cause environmental pollution but also waste energy. At this time, a natural gas compression and recovery device is needed.

[0003] The applicant discovered through a search that a Chinese patent, "A Natural Gas Compression and Recovery Processing Device," with publication number "CN209065839U," discloses a concrete surface. A base plate is fixedly installed on the upper surface of the concrete surface. A support rod is located on the left side of the upper surface of the base plate. A heat exchange box is fixedly installed at the upper end of the support rod. A spiral tube is fixedly installed inside the heat exchange box, with its upper and lower sides contacting the upper and lower ends of the heat exchange box's interior. Due to its spiral structure, the velocity of the low-temperature natural gas entering the spiral tube is immediately slowed down. Furthermore, the spiral tube's tight spiral structure results in a large contact area between its upper end and the upper end of the heat exchange box's interior, allowing the low-temperature natural gas to exchange heat with the constant-temperature water relatively slowly and evenly, leading to better heat exchange. The glass layer and polyimide film also possess excellent thermal conductivity and are resistant to water oxidation and corrosion, preventing the low-temperature natural gas from flowing out of the pipe due to corrosion, thus avoiding this safety hazard.

[0004] However, at the end of the natural gas recovery process, such as in some cities, the extracted natural gas may carry some solid particles contained in the pipeline. If these solid impurities are not treated, they will cause wear and tear on the natural gas transmission pipelines and related equipment, reduce the service life of the equipment, and may even block the pipelines, affecting the normal transportation of natural gas. Utility Model Content

[0005] The purpose of this invention is to provide a natural gas compression and recovery device for use in LNG storage and distribution stations, so as to solve the problem mentioned in the background art that solid particles contained in natural gas cannot be effectively isolated.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a natural gas compression and recovery device for LNG storage and distribution stations, comprising a working box and an inlet pipe fixedly connected to one side of the surface, and an outlet pipe fixed to the top surface of the working box. The working box is provided with a partition plate inside, and the inner wall of the working box is provided with an isolation structure, which can isolate solid particles contained in natural gas to improve the purity of natural gas. The working box is provided with an outlet structure on one side of the surface, which can knock down solid particles isolated on the surface of the isolation structure for collection.

[0007] Preferably, the isolation structure includes a plug-in block and a plug-in groove. The plug-in block is fixedly connected to the opposite side of the inner wall of the work box, and the plug-in groove is formed inside the plug-in block.

[0008] Preferably, the isolation structure further includes sliders, connecting pipes, and dust collection screens. Multiple sliders are slidably connected inside the insertion slots, the connecting pipes are fixedly connected to the upper part of the sliders, and the dust collection screens are fixedly connected to the bottom of the connecting pipes.

[0009] Preferably, the isolation structure further includes limiting blocks and discharge chambers, with multiple limiting blocks fixedly connected to the surface of the dust collection net, and multiple discharge chambers opened on the inner wall of the connecting pipe and the dust collection net.

[0010] Preferably, each discharge structure includes a compression box and a connecting pipe, wherein the compression box is fixedly connected to one side of the working box surface, and the connecting pipe is fixedly connected to one side of the compression box surface.

[0011] Preferably, each discharge structure further includes a compression pipe and an inlet pipe. Multiple compression pipes are disposed on one side of the surface of the compression box and penetrate the interior of the working box. Multiple inlet pipes are fixedly connected to the bottom of the compression pipe and located on top of the dust collection screen.

[0012] Preferably, the bottom of the working box has a flow port, the bottom of the working box is fixedly connected to a sealing box, and a dust collection box is slidably connected inside the sealing box.

[0013] Preferably, a working groove is provided on one side of the surface of the working box, and a sealing plate is provided on one side of the surface of the working groove.

[0014] The technical effects and advantages of this utility model are as follows: This utility model utilizes an inlet pipe to introduce natural gas. The natural gas passes through a partition plate to enter the bottom of the working chamber. Subsequently, the natural gas passes through a dust collection screen, where dust is isolated. Clean natural gas enters the interior of the dust collection screen and then enters the top of the working chamber through a connecting pipe. Finally, it is discharged through an outlet pipe. When the dust collection screen is full of dust, compressed air is then connected through a connecting pipe. The compressed air is evenly distributed to multiple compression pipes through a compression box, and then discharged through an inlet pipe. This causes the dust on the surface of the dust collection screen to fall into the interior of the dust collection box. This not only isolates solid particles contained in the natural gas but also effectively stores the particles, thus significantly improving the performance of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a front cross-sectional view of the present invention.

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of section A in the middle.

[0018] Figure 4 This is a three-dimensional structural diagram of the isolation structure of this utility model.

[0019] In the diagram: 1. Working box; 2. Inlet pipe; 3. Outlet pipe; 4. Isolation structure; 401. Insertion block; 402. Insertion slot; 403. Slider; 404. Connecting pipe; 405. Dust collection screen; 406. Limiting block; 407. Discharge chamber; 5. Discharge structure; 501. Compression box; 502. Connecting pipe; 503. Compression pipe; 504. Inlet pipe; 6. Flow port; 7. Sealing box; 8. Dust collection box; 9. Working groove; 10. Sealing plate; 11. Partition plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] like Figures 1 to 4As shown, a natural gas compression and recovery device applied to an LNG storage and distribution station according to the first aspect of this utility model includes a working box 1 and an inlet pipe 2 fixedly connected to one side of the surface, and an outlet pipe 3 fixed to the top surface of the working box 1. The working box 1 is provided with a partition plate 11 inside, and an isolation structure 4 is provided on the inner wall of the working box 1, which can isolate solid particles contained in natural gas to improve the purity of natural gas. An outlet structure 5 is provided on one side of the surface of the working box 1, which can knock down the solid particles isolated on the surface of the isolation structure 4 and collect them.

[0023] The technical effects achieved by the above embodiments are as follows: Natural gas is introduced through the inlet pipe 2. The natural gas 2 enters the bottom of the working box 1 through the partition plate 11. Then, the natural gas passes through the dust collection net 405, and the dust is isolated by the dust collection net 405. The clean natural gas enters the interior of the dust collection net 405, and then enters the top of the interior of the working box 1 through the connecting pipe 404. Finally, it is discharged through the discharge pipe 3. When the dust collection net 405 is full of dust, compressed air is then connected through the connecting pipe 502. The compressed air is evenly transmitted to multiple compression pipes 503 through the compression box 501, and then discharged through the inlet pipe 504. This causes the dust on the surface of the dust collection net 405 to fall into the interior of the dust collection box 8. This not only isolates the solid particles contained in the natural gas, but also effectively stores the particles, thus effectively improving the performance of the device.

[0024] Example 2

[0025] like Figure 1 and Figure 2 As shown, a natural gas compression and recovery device applied to an LNG storage and distribution station includes all the contents of Embodiment 1. In addition, the isolation structure 4 includes a plug-in block 401 and a plug-in groove 402. The plug-in block 401 is fixedly connected to the opposite side of the inner wall of the working box 1. The plug-in groove 402 is opened inside the plug-in block 401. The isolation structure 4 also includes a slider 403, a connecting pipe 404, and a dust collection net 405. Multiple sliders 403 are slidably connected inside the plug-in groove 402. The connecting pipe 404 is fixedly connected to the upper part of the slider 403. The dust collection net 405 is fixedly connected to the bottom of the connecting pipe 404. The isolation structure 4 also includes a limiting block 406 and a discharge chamber 407. Multiple limiting blocks 406 are all fixedly connected to the surface of the dust collection net 405. Multiple discharge chambers 407 are all opened inside the connecting pipe 404 and the dust collection net 405.

[0026] The technical effect achieved by the above embodiment is as follows: Natural gas is discharged into the interior of the working box 1 through the discharge pipe 2, and then enters the bottom of the working box 1 through the partition plate 11. At that time, the natural gas floats up and enters the interior of multiple dust collection nets 405. At this time, the solid particles contained in the natural gas will be isolated by the dust collection nets 405, and the clean natural gas will enter the interior of the dust collection nets 405. Then, it enters the top of the interior of the working box 1 through the connecting pipe 404, and finally is discharged through the discharge pipe 3. When the dust collection nets 405 need to be removed and replaced, simply open the sealing plate 10 and pull out the multiple dust collection nets 405 in an orderly manner from the insertion slot 402.

[0027] Example 3

[0028] like Figures 2 to 3 As shown, a natural gas compression and recovery device applied to an LNG storage and distribution station includes all the contents of Embodiment 2. In addition, each discharge structure 5 includes a compression box 501 and a connecting pipe 502. The compression box 501 is fixedly connected to one side of the surface of the working box 1, and the connecting pipe 502 is fixedly connected to one side of the surface of the compression box 501. Each discharge structure 5 also includes a compression pipe 503 and an inlet pipe 504. Multiple compression pipes 503 are all located on one side of the surface of the compression box 501, and multiple compression pipes 503 penetrate the interior of the working box 1. Multiple inlet pipes 504 are fixedly connected to the bottom of the compression pipes 503 and are located at the top of the dust collection net 405.

[0029] The technical effect achieved by the above embodiment is as follows: However, when too many solid particles adhere to the surface of the dust collection net 405, thus affecting the filtration effect, it is only necessary to connect the compressed gas through the connecting pipe 502 so that the compressed gas can be evenly distributed into the compression box 501, and then discharged to multiple compression pipes 503 respectively, so that the connecting pipe 404 provided on the bottom surface of the compression pipe 503 discharges the compressed gas, thereby transmitting it to the discharge chamber 407, and finally causing the solid particles contained on the surface of the dust collection net 405 to fall to the bottom.

[0030] Example 4

[0031] like Figure 1 and Figure 2 As shown, a natural gas compression and recovery device for LNG storage and distribution stations includes all the contents of Embodiment 3. In addition, a flow port 6 is provided at the bottom of the working box 1, a sealing box 7 is fixedly connected to the bottom of the working box 1, a dust collection box 8 is slidably connected inside the sealing box 7, a working groove 9 is provided on one side of the surface of the working box 1, and a sealing plate 10 is provided on one side of the surface of the working groove 9.

[0032] The technical effect achieved by the above embodiments is that solid particles can fall into the dust collection box 8, thereby generating collection.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A natural gas compression and recovery device for use in LNG storage and distribution stations, comprising a working box (1) and an inlet pipe (2) fixedly connected to one side of its surface, and an outlet pipe (3) fixed to the top surface of the working box (1), characterized in that: The working box (1) is provided with a partition plate (11) inside, and the inner wall of the working box (1) is provided with an isolation structure (4) which can isolate the solid particles contained in the natural gas and improve the purity of the natural gas. The working box (1) is provided with a discharge structure (5) on one side of its surface, which can knock down the solid particles isolated on the surface of the isolation structure (4) and collect them. The isolation structure (4) includes a plug-in block (401) and a plug-in groove (402). The plug-in block (401) is fixedly connected to the opposite side of the inner wall of the work box (1), and the plug-in groove (402) is opened inside the plug-in block (401). The isolation structure (4) also includes a slider (403), a connecting pipe (404), and a dust collection screen (405). Multiple sliders (403) are slidably connected to the inside of the insertion slot (402), the connecting pipe (404) is fixedly connected to the upper part of the slider (403), and the dust collection screen (405) is fixedly connected to the bottom of the connecting pipe (404). The isolation structure (4) also includes a limiting block (406) and a discharge chamber (407). The multiple limiting blocks (406) are fixedly connected to the surface of the dust collection net (405), and the multiple discharge chambers (407) are opened inside the connecting pipe (404) and the dust collection net (405). Each discharge structure (5) includes a compression box (501) and a connecting pipe (502). The compression box (501) is fixedly connected to one side of the surface of the working box (1), and the connecting pipe (502) is fixedly connected to one side of the surface of the compression box (501). Each of the discharge structures (5) further includes a compression pipe (503) and an inlet pipe (504). Multiple compression pipes (503) are located on one side of the surface of the compression box (501), and multiple compression pipes (503) penetrate the interior of the working box (1). Multiple inlet pipes (504) are fixedly connected to the bottom of the compression pipe (503) and located at the top of the dust collection screen (405).

2. The natural gas compression and recovery device for LNG storage and distribution stations according to claim 1, characterized in that: The bottom of the working box (1) is provided with a flow port (6), and a sealing box (7) is fixedly connected to the bottom of the working box (1). A dust collection box (8) is slidably connected inside the sealing box (7).

3. A natural gas compression and recovery device for LNG storage and distribution stations according to claim 1, characterized in that: A working groove (9) is provided on one side of the surface of the working box (1), and a sealing plate (10) is provided on one side of the surface of the working groove (9).

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