Energy-saving piston type hydrogen compression device for hydrogen refueling station

Abstract

The invention discloses an energy-saving piston type hydrogen compression device for a hydrogen refueling station, and relates to the technical field of hydrogen compression, the energy-saving piston type hydrogen compression device comprises a compressor cylinder body, a cavity is formed in the compressor cylinder body, a mounting frame is fixedly arranged on the compressor cylinder body, and a hydraulic cylinder is fixedly arranged on the mounting frame; the piston is fixed to the driving end of the hydraulic cylinder, a compression cavity is defined by the bottom of the piston and the side wall of the compressor cylinder body, one end of the compression cavity communicates with the air inlet pipe, and the other end of the compression cavity communicates with the air outlet pipe; a filter is arranged at the end, away from the compressor cylinder body, of the air inlet pipe and used for filtering hydrogen input into the compression cavity. According to the compressor, the purity of hydrogen input into the compression cavity can be effectively guaranteed, the phenomenon that after impurities or water enters the compression cavity, parts in the compressor are damaged is avoided, and safety and stability are higher.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen compression, and in particular to an energy-saving piston type hydrogen compression device for a hydrogen refueling station. Background Art

[0002] Hydrogen energy refers to the chemical energy released by the chemical reaction of hydrogen and oxygen. It is a clean secondary energy source with the advantages of high energy density, high combustion calorific value, wide source, storability, renewable, electrical and combustible, zero pollution, and zero carbon emissions. It helps to solve energy crises and environmental pollution problems, and is known as the "ultimate energy" of the 21st century.

[0003] During the compression process, if hydrogen contains impurities, it may cause wear or blockage to the internal parts of the compressor, thus affecting the performance and life of the compressor. By setting up a filter, impurities in hydrogen, such as dust, moisture, oil, etc., can be effectively removed to protect the compressor from damage;

[0004] The filter element is the core component of the filter, which is usually composed of multiple layers of filter screens or filter elements of different materials. These filter screens or filter elements can effectively remove impurities in hydrogen. After long-term use, the impurities on the surface of the filter element can easily cause the filter screen to be blocked, thereby affecting the hydrogen intake efficiency. It needs to be replaced or cleaned manually at regular intervals. However, during the replacement process, in order to avoid hydrogen leakage, the compressor needs to be shut down, which will affect the normal compression process of the compressor. Summary of the invention

[0005] The purpose of the present invention is to provide an energy-saving piston type hydrogen compression device for a hydrogen refueling station to solve the following technical problems:

[0006] When replacing or cleaning the filter at the air inlet of the hydrogen compressor, the compressor needs to be shut down.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An energy-saving piston type hydrogen compression device for a hydrogen refueling station comprises a compressor cylinder body, a cavity is provided in the compressor cylinder body, a mounting frame is fixedly arranged on the compressor cylinder body, and a hydraulic cylinder is fixedly arranged on the mounting frame;

[0009] A piston is slidably arranged in the cavity, the piston is fixed to the driving end of the hydraulic cylinder, the bottom of the piston and the side wall of the compressor cylinder body are enclosed to form a compression chamber, one end of the compression chamber is connected to the air inlet pipe, and the other end is connected to the air outlet pipe;

[0010] Wherein, a filter is provided at one end of the air inlet pipe away from the compressor cylinder body for filtering the hydrogen input into the compression chamber.

[0011] Preferably, a solenoid valve is also provided in the air outlet pipe to control the opening or closing of the air outlet pipe.

[0012] Preferably, the filter includes a filter box fixedly arranged at one end of the intake pipe away from the compressor cylinder body, and a first through groove connected to the intake pipe is opened at one end of the filter box facing the compressor cylinder body, and a second through groove is symmetrically opened at the other end, and the second through groove is connected to the air supply pipe at the end away from the filter box.

[0013] Preferably, the filter box body is provided with a slide groove with two ends passing therethrough in the horizontal direction, and the slide groove is connected with the first through groove and the second through groove;

[0014] Among them, the filter also includes two groups of filter plates slidably arranged in the slide groove, the two groups of filter plates are arranged in an integrated manner, the filter plates are provided with a third through groove along the axis of the intake pipe, and a guide groove for embedding the filter element is also provided in the vertical position on the upper edge of the filter plate.

[0015] Preferably, the filter element comprises a filtration layer and a drying layer.

[0016] Preferably, two groups of sealing plates are symmetrically arranged on both sides of the filter box.

[0017] Preferably, the side of the filter element facing the gas pipe is enclosed with the third through groove to form a storage groove for storing impurities.

[0018] Preferably, the two groups of sealing plates are connected to an adjusting portion that drives them to move toward each other or away from each other.

[0019] Preferably, the adjustment part comprises an L-shaped bracket symmetrically arranged on both sides of the filter box, a guide rod is slidably arranged at the end of the L-shaped bracket, the ends of the guide rods on both sides that are close to each other are fixed to the positioning plate, a first spring is arranged on the guide rod, a wedge plate is fixedly arranged at one end of the positioning plate away from the filter box, an inclined surface is arranged at one end of the wedge plates on both sides that are close to each other and away from the filter box, support rods are fixedly arranged at the ends of the filter plates on both sides that are away from each other, and guide wheels are symmetrically rotated at the other ends of the support rods;

[0020] Wherein, a limiting rod is fixedly arranged at one end of the sealing plates on both sides which is away from each other, a limiting seat fixed to the positioning plate is provided on the sliding sleeve of the limiting rod, and a second spring is provided on the limiting rod.

[0021] Beneficial effects of the present invention:

[0022] (1) When compressing hydrogen, the present invention first drives the piston to rise to a preset height in the compression chamber through a hydraulic cylinder, and inputs the gas to be compressed into the compression chamber through an air inlet pipe. During the transportation process, the impurity particles or moisture contained in the hydrogen are filtered and dried through a filter. After a certain amount of hydrogen is input, the hydraulic cylinder drives the piston to descend in the compression chamber to compress the hydrogen. The compressed high-pressure hydrogen is output through an air outlet pipe and stored. The present invention can effectively ensure the purity of the hydrogen input into the compression chamber, avoid the phenomenon that impurities or moisture enter the compression chamber and cause damage to the internal parts of the compressor, and has higher safety and stability;

[0023] (2) The present invention sets two groups of filter plates, and filter elements can be embedded in the guide grooves of the two groups of filter plates. When one group of filter plates is embedded in the slide groove, the filter element inside it can filter and dry impurities and moisture in the hydrogen, while the other group of filter plates is located outside the filter box, so that the filter element can be replaced. During the replacement process, the normal filtration of the filter is not affected. When the filter element needs to be replaced, the filter plate embedded in the slide groove can be pushed out. At the same time, the filter plate on the other side can be re-embedded in the slide groove for filtering. When the filter element is replaced, the present invention does not need to shut down the compressor, and will not affect the normal hydrogen compression process;

[0024] (3) When the filter element of the filter plate is replaced, the two sets of sealing plates are in a sliding fit with the surface of the filter plate during the process of pulling the filter plate out of the slide groove, so that the third through groove can be sealed, so that the hydrogen in the gas transmission pipe will not continuously leak from the third through groove, and the sealing performance is better;

[0025] (4) In the present invention, when the filter plate is completely pulled out of the slide groove, the sealing plates on both sides are driven toward each other through the adjustment part to embed the sealing plates into the third through groove. During the embedding process, the sealing plates push the impurity particles accumulated in the storage groove into the guide groove. Therefore, after the filter element is pulled out of the guide groove, the impurity particles can be discharged from the bottom of the guide groove under the action of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a structural schematic diagram of an energy-saving piston-type hydrogen compression device for a hydrogen refueling station of the present invention;

[0028] Figure 2 It is a schematic cross-sectional structure diagram of an energy-saving piston-type hydrogen compression device for a hydrogen refueling station according to the present invention;

[0029] Figure 3 It is a structural schematic diagram of a filter in an energy-saving piston-type hydrogen compression device for a hydrogen refueling station of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a filter plate in an energy-saving piston-type hydrogen compression device for a hydrogen refueling station of the present invention;

[0031] Figure 5 It is a structural schematic diagram of a filter element in an energy-saving piston-type hydrogen compression device for a hydrogen refueling station of the present invention;

[0032] Figure 6 It is a schematic structural diagram of a filter cutaway in an energy-saving piston-type hydrogen compression device for a hydrogen refueling station according to the present invention.

[0033] In the figure: 1. compressor cylinder; 2. hydraulic cylinder; 3. filter; 4. solenoid valve; 5. filter plate; 6. sealing plate; 101. cavity; 102. mounting frame; 103. air pipe; 104. air outlet pipe; 105. compression chamber; 106. air inlet pipe; 201. piston; 301. filter box; 302. slide groove; 303. L-shaped bracket; 304. guide rod; 305. first spring; 306. first through groove; 307. second through groove; 501. guide groove; 502. third through groove; 503. support rod; 504. guide wheel; 505. filter element; 506. drying layer; 507. filtering layer; 508. storage tank; 601. limit rod; 602. limit seat; 603. second spring; 604. positioning plate; 605. wedge plate; 606. inclined surface. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figure 1-Figure 2 As shown, the present invention is an energy-saving piston-type hydrogen compression device for a hydrogen refueling station, including a compressor cylinder 1, a cavity 101 is opened in the compressor cylinder 1, a mounting frame 102 is fixedly arranged on the compressor cylinder 1, and a hydraulic cylinder 2 is fixedly arranged on the mounting frame 102; specifically, the cavity 101 is a circular cavity; wherein the mounting frame 102 and the compressor cylinder 1 are fixed by welding or bolting, which is not limited in this embodiment.

[0037] A piston 201 is slidably arranged in the cavity 101, and the piston 201 is fixed to the driving end of the hydraulic cylinder 2. The bottom of the piston 201 and the side wall of the compressor cylinder body 1 enclose a compression chamber 105, and one end of the compression chamber 105 is connected to the air inlet pipe 106, and the other end is connected to the air outlet pipe 104; in this embodiment, the end of the air inlet pipe 106 away from the compressor cylinder body 1 is connected to the hydrogen generating device for inputting the hydrogen to be compressed into the compression chamber 105, and the air inlet pipe 106 is provided with an air inlet valve limited to air intake, and the end of the air outlet pipe 104 away from the compressor cylinder body 1 is connected to the high-pressure hydrogen storage device for transporting the compressed high-pressure hydrogen to the high-pressure hydrogen storage device, and the air outlet pipe 104 is provided with an air outlet valve limited to air outlet.

[0038] A filter 3 is provided at one end of the intake pipe 106 away from the compressor cylinder body 1 for filtering the hydrogen input into the compression chamber 105; it can be explained that, when compressing hydrogen, the present embodiment first drives the piston 201 to rise to a preset height in the compression chamber 105 through the hydraulic cylinder 2, and the gas to be compressed is input into the compression chamber 105 through the intake pipe 106. During the transportation process, the impurity particles or moisture contained in the hydrogen are filtered and dried by the filter 3. After a certain amount of hydrogen is input, the hydraulic cylinder 2 drives the piston 201 to descend in the compression chamber 105 to compress the hydrogen. The compressed high-pressure hydrogen is output through the outlet pipe 104 and stored. The present embodiment can effectively ensure the purity of the hydrogen input into the compression chamber 105, avoid the phenomenon that impurities or moisture enter the compression chamber 105 and cause damage to the internal parts of the compressor, and has higher safety and stability.

[0039] Example 2

[0040] Based on Example 1, in this example, please refer to Figure 1-Figure 2 , an electromagnetic valve 4 is also provided in the air outlet pipe 104 for controlling the opening or closing of the air outlet pipe 104; specifically, the air outlet pipe 104 is electrically connected to the hydraulic cylinder 2 through the controller; it should be noted that when the hydraulic cylinder 2 drives the piston 201 to compress the hydrogen in the compression chamber 105, the electromagnetic valve 4 is first controlled by the controller to close the air outlet pipe 104 to avoid the hydrogen being directly discharged from the air outlet pipe 104 when the piston 201 compresses the hydrogen. Accordingly, when the piston 201 drops to a preset height, it indicates that the hydrogen compression reaches a preset value. Secondly, the electromagnetic valve 4 is controlled by the controller to open the air outlet pipe 104. As the piston 201 continues to drop, the compressed hydrogen can be discharged from the air outlet pipe 104.

[0041] As a further solution of this embodiment, please refer to Figure 2-Figure 3 as well as Figure 6The filter 3 includes a filter box 301 fixedly arranged at the end of the intake pipe 106 away from the compressor cylinder body 1, and a first through groove 306 connected to the intake pipe 106 is opened at the end of the filter box 301 facing the compressor cylinder body 1, and a second through groove 307 is symmetrically opened at the other end, and the end of the second through groove 307 away from the filter box 301 is connected to the gas supply pipe 103; it can be explained that in this embodiment, when hydrogen is input into the compression chamber 105, the hydrogen is transported to the filter box 301 through the gas supply pipe 103 and the second through groove 307, and after being filtered, it is transported to the compression chamber 105 through the first through groove 306 and the intake pipe 106 in turn.

[0042] In this embodiment, please refer to Figure 3-Figure 4 A slide groove 302 with two ends passing through is provided on the filter box body 301 in the horizontal direction, and the slide groove 302 is connected with the first through groove 306 and the second through groove 307, wherein the filter 3 also includes two groups of filter plates 5 slidably arranged in the slide groove 302, and the two groups of filter plates 5 are arranged in an integrated manner, and the filter plate 5 is provided with a third through groove 502 in the direction along the axis of the intake pipe 106, and a guide groove 501 for embedding a filter element 505 is also provided on the filter plate 5 in the vertical position; it can be explained that, in this embodiment, by providing two groups of filter plates 5, the filter element 505 can be embedded in the guide grooves 501 of the two groups of filter plates 5, When one group of filter plates 5 is embedded in the slide groove 302, the filter element 505 inside it can filter and dry impurities and moisture in the hydrogen, while the other group of filter plates 5 is located outside the filter box 301, so that the filter element 505 can be replaced. During the replacement process, the normal filtration of the filter 3 is not affected. When the filter element 505 needs to be replaced, the filter plate 5 embedded in the slide groove 302 can be pushed out. At the same time, the filter plate 5 on the other side can be re-embedded in the slide groove 302 for filtering. In this embodiment, when replacing the filter element 505, there is no need to shut down the compressor, and the normal hydrogen compression process will not be affected.

[0043] As a further solution of this embodiment, please refer to Figure 5 The filter element 505 includes a filter layer 507 and a drying layer 506; specifically, the filter layer 507 can adopt a multi-layer composite filter structure, and the drying layer 506 can adopt a polypropylene, glass fiber or ceramic structure, which is not limited in this embodiment.

[0044] Furthermore, when the sliding filter plate 5 is replaced, in order to prevent hydrogen from leaking from the third through slot 502 during the sliding process, in this embodiment, two sets of sealing plates 6 are symmetrically arranged on both sides of the filter box 301; it can be explained that when the filter element 505 of the filter plate 5 is replaced, in the process of pulling the filter plate 5 out of the slide slot 302, the two sets of sealing plates 6 are in a sliding fit state with the surface of the filter plate 5, and then the third through slot 502 can be sealed, so that the hydrogen in the gas pipe 103 will not continuously leak from the third through slot 502, and the sealing performance is better;

[0045] It should be noted that, when replacing the filter element 505, even if some hydrogen remains in the guide groove 501, the leakage of this part of hydrogen can be ignored.

[0046] In this embodiment, please refer to Figure 6 The side of the filter element 505 facing the gas pipe 103 is enclosed with the third through groove 502 to form a storage groove 508 for storing impurities; it can be explained that during the use of the filter element 505, the filtered impurity particles are gathered in the storage groove 508 for storage.

[0047] Furthermore, in order to facilitate the discharge of foreign particles stored in the storage tank 508, in the present embodiment, the two sets of sealing plates 6 are connected to an adjustment portion that drives them to move toward each other or away from each other; it can be explained that when the filter plate 5 is completely pulled out of the slide groove 302, the sealing plates 6 on both sides are driven toward each other by the adjustment portion so as to embed the sealing plates 6 into the third through groove 502. During the embedding process, the sealing plates 6 push the foreign particles accumulated in the storage tank 508 into the guide groove 501 together. Therefore, after the filter element 505 is pulled out of the guide groove 501, the foreign particles can be discharged from the bottom of the guide groove 501 under the action of gravity.

[0048] It should be noted that the size of the sealing plate 6 of the present embodiment needs to correspond to the size of the third through groove 502, so that when the sealing plate 6 is embedded in the third through groove 502, the side edge surface of the sealing plate 6 and the groove wall of the third through groove 502 need to maintain sliding fit, while avoiding hydrogen leakage, the dust in the storage groove 508 can be stably pushed out.

[0049] For further information, see Figure 3 and Figure 4The adjusting part includes an L-shaped bracket 303 symmetrically arranged on both sides of the filter box 301, and a guide rod 304 is slidably arranged at the end of the L-shaped bracket 303. The ends of the guide rods 304 on both sides are fixed to the positioning plate 604. A first spring 305 is arranged on the guide rod 304. One end of the first spring 305 is fixed to the L-shaped bracket 303, and the other end is fixed to the positioning plate 604. A wedge plate 605 is fixedly arranged at one end of the positioning plate 604 away from the filter box 301. The wedge plates 605 on both sides are close to each other and An inclined surface 606 is provided at one end away from the filter box 301, and a support rod 503 is fixedly arranged at one end away from the filter plates 5 on both sides, and a guide wheel 504 is symmetrically rotated at the other end of the support rod 503, wherein a limit rod 601 is fixedly arranged at one end away from the sealing plates 6 on both sides, and a limit seat 602 fixed to the positioning plate 604 is slidably sleeved on the limit rod 601, and a second spring 603 is provided on the limit rod 601, one end of the second spring 603 is fixed to the limit seat 602, and the other end is fixed to the limit rod 60 1 is fixed; it can be explained that when the filter plate 5 is in the state of being embedded in the slide groove 302, the guide wheel 504 on the outside thereof and the sealing plate 6 are in a state of abutting against each other. At this time, the first spring 305 is in a contracted state to open the sealing plates 6 on both sides. When the filter plate 5 on this side is pulled out, the two sides of the filter plate 5 slide and fit with the sealing plate 6. When the filter plate 5 is completely pulled out, the position of the third through groove 502 corresponds to the position of the sealing plate 6. The first spring 305 can drive the positioning plate 604 toward the direction of the filter plate 5. Movement to embed the sealing plate 6 into the third through groove 502. After the filter element 505 is replaced, during the process of embedding the filter plate 5 into the slide groove 302, in the initial state, since the sealing plate 6 is embedded in the third through groove 502, the sealing plate 6 can move synchronously with the filter plate 5. During the movement, the guide wheels 504 on both sides roll and abut against the inclined surface 606 to drive the positioning plate 604 to move in a direction away from each other, and the positioning plate 604 can be pulled out of the third through groove 502 and then move to the initial position.

[0050] An energy-saving piston type hydrogen compression device for a hydrogen refueling station, the compression method of which comprises the following steps:

[0051] See also Figure 1-Figure 2 , the hydraulic cylinder 2 drives the piston 201 to rise to a preset height in the compression chamber 105, and the controller controls the solenoid valve 4 to close the air outlet pipe 104;

[0052] The air inlet pipe 106 inputs the gas to be compressed into the compression chamber 105;

[0053] During the transportation process, the impurity particles or moisture contained in the hydrogen are filtered and dried through the filter 3;

[0054] When a certain amount of hydrogen is input, the hydraulic cylinder 2 drives the piston 201 to descend in the compression chamber 105 to compress the hydrogen;

[0055] The controller controls the solenoid valve 4 to open the gas outlet pipe 104 , and the compressed high-pressure hydrogen is output through the gas outlet pipe 104 and stored.

[0056] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An energy-saving piston type hydrogen compression device for a hydrogen refueling station, comprising a compressor cylinder (1), wherein a cavity (101) is provided in the compressor cylinder (1), characterized in that: A mounting frame (102) is fixedly arranged on the compressor cylinder body (1), and a hydraulic cylinder (2) is fixedly arranged on the mounting frame (102); A piston (201) is slidably arranged in the cavity (101), the piston (201) is fixed to the driving end of the hydraulic cylinder (2), the bottom of the piston (201) and the side wall of the compressor cylinder (1) are enclosed to form a compression chamber (105), one end of the compression chamber (105) is connected to the air inlet pipe (106), and the other end is connected to the air outlet pipe (104); Wherein, a filter (3) is provided at one end of the air inlet pipe (106) away from the compressor cylinder (1) for filtering the hydrogen input into the compression chamber (105).

2. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 1, characterized in that: The air outlet pipe (104) is also provided with a solenoid valve (4) for controlling the opening or closing of the air outlet pipe (104).

3. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 1, characterized in that: The filter (3) comprises a filter box (301) fixedly arranged at one end of the air intake pipe (106) away from the compressor cylinder body (1); a first through groove (306) communicating with the air intake pipe (106) is provided at one end of the filter box (301) facing the compressor cylinder body (1); a second through groove (307) is symmetrically provided at the other end; the second through groove (307) is communicated with the air supply pipe (103) at one end away from the filter box (301).

4. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 3, characterized in that: The filter box (301) is provided with a slide groove (302) with two ends passing through in the horizontal direction, and the slide groove (302) is connected to the first through groove (306) and the second through groove (307); The filter (3) further comprises two groups of filter plates (5) slidably arranged in the slide groove (302), the two groups of filter plates (5) being arranged in an integrated manner, the filter plates (5) being provided with a third through groove (502) in the direction along the axis of the air inlet pipe (106), and a guide groove (501) for embedding a filter element (505) being also provided in a vertical position on the filter plates (5).

5. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 4, characterized in that: The filter element (505) comprises a filtering layer (507) and a drying layer (506).

6. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 4, characterized in that: Two groups of sealing plates (6) are symmetrically arranged on both sides of the filter box (301).

7. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 6, characterized in that: The side of the filter element (505) facing the gas delivery pipe (103) is enclosed with the third through groove (502) to form a storage groove (508) for storing impurities.

8. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 7, characterized in that: The two groups of sealing plates (6) are connected to an adjusting part which drives them to move toward each other or away from each other.

9. The energy-saving piston type hydrogen compression device for a hydrogen refueling station according to claim 8, characterized in that: The adjustment part comprises an L-shaped bracket (303) symmetrically arranged on both sides of the filter box (301), a guide rod (304) is slidably arranged at the end of the L-shaped bracket (303), the ends of the guide rods (304) on both sides are close to each other and are fixed to the positioning plate (604), a first spring (305) is arranged on the guide rod (304), a wedge plate (605) is fixedly arranged at one end of the positioning plate (604) away from the filter box (301), an inclined surface (606) is arranged at one end of the wedge plates (605) on both sides that are close to each other and away from the filter box (301), a support rod (503) is fixedly arranged at one end of the filter plates (5) on both sides that are away from each other, and a guide wheel (504) is symmetrically rotatably arranged at the other end of the support rod (503); A limiting rod (601) is fixedly arranged at one end of the sealing plates (6) on both sides which are away from each other, a limiting seat (602) is slidably sleeved on the limiting rod (601) and fixed to the positioning plate (604), and a second spring (603) is provided on the limiting rod (601).

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