A hydrogen gas compressor for PEM hydrogen production

Abstract

The present invention relates to the technical field of hydrogen compression equipment, and discloses a hydrogen gas compressor for PEM hydrogen production, comprising a compression cylinder, a compression piston for compressing hydrogen is slidably sleeved on the inner side of the compression cylinder, a sealing liquid for sealing the compression piston is filled in the top cavity of the compression piston on the inner side of the compression cylinder, and a regulating mechanism for regulating the fluctuation of the sealing liquid level is arranged on the inner side of the compression cylinder. The present invention limits the fluctuation of the free liquid surface of the ionic liquid by synchronously lifting and lowering the regulating plate and the ionic liquid, and reduces the rated size of the opening value of the buffer groove on the regulating plate when the exhaust is completed, reduces the possibility of the ionic liquid losing from the exhaust valve, and the regulating plate makes the fluctuation of the ionic liquid within the rated range, further avoiding the sealing failure and the loss of the clamp ionic liquid due to the violent fluctuation of the ionic liquid, and improving the reliability of the use of the hydrogen gas compressor.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen compression equipment, in particular to a hydrogen gas compressor for PEM hydrogen production. Background Art

[0002] In the process of hydrogen production by PEM (proton exchange membrane), it is necessary to use a hydrogen compressor to compress the produced hydrogen and fill the hydrogen into the hydrogen storage device under high pressure. The existing ionic liquid hydrogen compressor includes a cylinder and an oil cylinder. A T-shaped piston is arranged in the cylinder. The oil pressure in the oil cylinder is used to make the T-shaped piston reciprocate. When the T-shaped piston moves to compress hydrogen, the hydrogen is compressed. When the pressure is higher than the hydrogen pressure in the exhaust pipe, the exhaust valve automatically opens to discharge the high-pressure hydrogen. When the air is inhaled, the hydrogen remaining in the clearance expands first, and then the hydrogen produced by the PEM is sucked in from the air intake valve of the cylinder. The piston reciprocates to complete the cycle of hydrogen compression, and the top of the piston is filled with incompressible ionic liquid to form a liquid seal.

[0003] However, during the use of the existing ionic liquid hydrogen compressor, the reciprocating motion of the piston will drive the overall movement of the ionic liquid. When the piston moves from the lower dead center to the upper dead center, the kinetic energy of the ionic liquid increases during the process of compressing hydrogen. When the piston moves to the upper dead center, the ionic liquid is prone to splashing out of the exhaust valve. When the piston returns from the upper dead center to the lower dead center, the negative pressure between the piston and the ionic liquid keeps the ionic liquid and the piston in synchronous movement. The free liquid surface of the ionic liquid is prone to violent fluctuations in this process, which in turn causes the fluctuation of the liquid surface to intensify during the next hydrogen compression, thereby increasing the possibility of the ionic liquid being discharged from the exhaust valve. At the same time, the violent fluctuation of the ionic liquid is likely to cause the seal between the ionic liquid and the piston to fail. Summary of the invention

[0004] In view of the shortcomings of the existing ionic liquid hydrogen compressors mentioned in the background technology during use, the present invention provides a hydrogen gas compressor for PEM hydrogen production, which has the advantages of avoiding the loss of ionic liquid and controlling the fluctuation degree of ionic liquid, and solves the technical problems raised in the above background technology.

[0005] The present invention provides the following technical solution: a hydrogen gas compressor for PEM hydrogen production, comprising a compression cylinder, a compression piston for compressing hydrogen is slidably sleeved inside the compression cylinder, a sealing liquid for sealing the compression piston is filled in a cavity located at the top of the compression piston inside the compression cylinder, and an adjusting mechanism for adjusting the fluctuation of the sealing liquid level is arranged inside the compression cylinder, and the adjusting mechanism can shield the liquid level of the ionic liquid to limit the fluctuation degree of the ionic liquid;

[0006] A buffer tank for connecting hydrogen and ionic liquid is provided on the top of the regulating plate. The height of the buffer tank can be changed with the height of the movement. The opening of the regulating buffer tank is adjusted to adjust the size of the area where the regulating plate limits the liquid level of the ionic liquid, so as to adjust the degree of restriction on the fluctuating liquid level.

[0007] Preferably, the adjustment mechanism comprises an adjustment plate, the adjustment plate is slidably sleeved with the compression cylinder, a fixed plate for adjusting the opening of the buffer groove is slidably sleeved on the inner side of the compression piston, a fixed rod for driving the fixed plate to move synchronously is fixedly connected to the top of the compression piston, the fixed rod is fixedly connected to the fixed plate, and the fixed rod is rotatably connected to the adjustment plate;

[0008] A moving magnetic block is fixedly arranged at the top end of the adjusting plate, a fixed magnetic block corresponding to the moving magnetic block is arranged inside the compression cylinder, the acting force between the fixed magnetic block and the corresponding moving magnetic block is an attractive force, the number of the fixed magnetic blocks is set to be several, the fixed magnetic blocks corresponding to the moving magnetic block are arranged at different heights in the compression cylinder and their plane positions are staggered from each other, the fixed magnetic blocks at different heights attract the moving magnetic block in turn during the lifting process of the adjusting plate to drive the adjusting plate to rotate, thereby changing the size of the corresponding area of ​​the buffer groove and the connecting groove, and adjusting the opening of the buffer groove.

[0009] Preferably, the number of the buffer slots is set to several and the buffer slots are evenly spaced on the adjustment plate, the shape of the buffer slots is set to a fan shape, the number and shape of the connecting slots correspond to the buffer slots, the number of the moving magnetic blocks is set to two and the two moving magnetic blocks are symmetrically arranged on both sides of the adjustment plate.

[0010] Preferably, a support block for supporting the adjusting plate is fixedly sleeved on the top of the fixing rod body, arc-shaped supporting grooves are provided on both sides of the top of the support block, arc-shaped limiting grooves are provided on both sides of the bottom of the fixing plate, the bottom of the adjusting plate is fixedly connected with a lower top block for cooperating with the supporting groove, and the top of the adjusting plate is fixedly connected with an upper top block for cooperating with the limiting groove.

[0011] Preferably, the side surfaces of the upper top block and the lower top block are both arranged as inclined surfaces, the side walls on both sides of the supporting groove are arranged as inclined surfaces corresponding to the lower top block, and the side walls on both sides of the limiting groove are arranged as inclined surfaces corresponding to the upper top block.

[0012] Preferably, a plurality of rotating blades for driving the flow of the ionic liquid are fixedly connected to the bottom of the regulating plate, and the fixed magnetic blocks corresponding to the single moving magnetic block are arranged in a spiral lifting manner.

[0013] Preferably, an air inlet is provided on one side of the top of the compression cylinder, an exhaust port is provided on the other side of the top of the compression cylinder, an air inlet valve is provided in the air inlet, and an exhaust valve is provided in the exhaust port.

[0014] Preferably, an oil cylinder is fixedly provided at the bottom of the compression cylinder, and a hydraulic piston for driving the compression piston to move is slidably sleeved on the inner side of the oil cylinder. A No. 1 oil chamber opening is opened at the midpoint of the bottom of the oil cylinder, and a No. 2 oil chamber opening is opened on one side of the top of the oil cylinder. The No. 2 oil chamber opening and the No. 1 oil chamber opening are both connected to the oil circuit for respectively adjusting the top and bottom oil pressures of the hydraulic piston.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention blocks the top of the ionic liquid surface by an adjusting plate. When the compression piston drives the ionic liquid to move to the top dead center, the adjusting plate rotates under the mutual attraction between the moving magnetic block and the fixed magnetic blocks at different heights in turn, and cooperates with the fixed plate to reduce the opening of the buffer tank to the rated size, thereby reducing the possibility of the ionic liquid flowing into the exhaust valve through the buffer tank and the connecting groove, and the adjusting plate synchronously follows the rise and fall of the ionic liquid, always limiting the fluctuation degree of the ionic liquid, avoiding excessive fluctuation of the liquid level of the ionic liquid in the process of circulating hydrogen compression, ensuring the reliability of the ionic liquid seal, and further reducing the possibility of the loss of the ionic liquid.

[0017] 2. The present invention uses a moving magnetic block to sequentially interact with fixed magnetic blocks at different heights, in coordination with an upper top block, a lower top block, a supporting groove and a limiting groove, so that the adjusting plate is prevented from shaking, and the adjusting plate is moved relative to the ionic liquid while being synchronously lifted and lowered with the ionic liquid to move closer to or away from the surface of the ionic liquid. The rotating blades are rotated by the rotating belt, and during the air intake stage, the rotating blades are stirred when the adjusting plate is relatively far away from the ionic liquid, that is, while ensuring that the ionic liquid has a relatively high fluidity within the rated range, so that the heat of the high-pressure hydrogen absorbed by the ionic liquid is dispersed, and before the next round of hydrogen compression, the adjusting plate is rotated to fit the surface of the ionic liquid, further ensuring that the surface of the ionic liquid tends to be flat, thereby improving the reliability of the use of the hydrogen gas compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a half-section schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 A magnified view of the structure at A;

[0021] Figure 4 For the present invention Figure 2 Schematic diagram of the structural cross section at the adjustment plate;

[0022] Figure 5 For the present invention Figure 2The structural diagram of the fixed plate;

[0023] Figure 6 For the present invention Figure 2 Schematic diagram of the structure at the adjustment plate;

[0024] Figure 7 This is a schematic diagram of the arrangement route of the fixed magnetic blocks of the present invention.

[0025] In the figure: 1. compression cylinder; 2. oil cylinder; 3. adjustment plate; 4. fixed plate; 5. air inlet; 6. exhaust port; 7. No. 1 oil chamber port; 8. No. 2 oil chamber port; 9. hydraulic piston; 10. compression piston; 11. fixing rod; 12. moving magnetic block; 13. fixed magnetic block; 14. buffer groove; 15. connecting groove; 16. support block; 17. lower top block; 18. upper top block; 19. rotating blade; 20. support groove; 21. limit groove; 22. layout route. DETAILED DESCRIPTION

[0026] 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.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 4 , a hydrogen gas compressor for PEM hydrogen production, comprising a compression cylinder 1, a compression piston 10 for compressing hydrogen is slidably sleeved on the inner side of the compression cylinder 1, a sealing liquid for sealing the compression piston 10 is filled in the top cavity of the compression piston 10 on the inner side of the compression cylinder 1, and the sealing liquid is preferably an ionic liquid, an adjusting plate 3 for adjusting the degree of fluctuation of the ionic liquid liquid level is arranged on the inner side of the compression cylinder 1, a buffer tank 14 for connecting hydrogen and the ionic liquid is arranged on the top of the adjusting plate 3, in the process of compressing hydrogen, hydrogen contacts the ionic liquid through the buffer tank 14 for heat exchange, when the compression piston 10 compresses hydrogen and moves to the top dead center, the bottom plate surface of the adjusting plate 3 is in contact with the free liquid surface of the ionic liquid, suppressing the fluctuation of part of the free liquid surface, so that when the compression piston 10 moves to the top dead center, the free liquid surface on the top of the ionic liquid tends to be flat, and the kinetic energy of the fluctuation of the ionic liquid is further absorbed through the buffer tank 14, reducing the possibility of the ionic liquid being discharged from the exhaust valve, and avoiding unnecessary loss of the ionic liquid.

[0029] An oil cylinder 2 is fixedly arranged at the bottom of the compression cylinder 1, and a hydraulic piston 9 is slidably sleeved on the inner side of the oil cylinder 2 for driving the compression piston 10 to move. A No. 1 oil chamber port 7 is opened at the midpoint of the bottom of the oil cylinder 2, and the No. 1 oil chamber port 7 is connected to the oil circuit for adjusting the bottom oil pressure of the hydraulic piston 9. A No. 2 oil chamber port 8 is opened on one side of the top of the oil cylinder 2, and the No. 2 oil chamber port 8 is connected to the oil circuit for adjusting the top oil pressure of the hydraulic piston 9. The hydraulic piston 9 is reciprocated and lifted by alternating changes in the oil pressure at the top and bottom of the hydraulic piston 9. The hydraulic piston 9 is fixedly connected to the compression piston 10, and the hydraulic piston 9 drives the compression piston 10 to reciprocate and lift.

[0030] An air inlet 5 is provided on one side of the top of the compression cylinder 1, and an air exhaust port 6 is provided on the other side of the top of the compression cylinder 1. An air inlet valve is provided in the air inlet 5. The air inlet valve is used for hydrogen to enter the cavity of the compression cylinder 1 from the PEM hydrogen production equipment through the air inlet valve in one direction. When the compression piston 10 moves from the top dead center to the bottom dead center and resets, the air pressure in the cavity above the compression piston 10 decreases, the air inlet valve opens, and an exhaust valve is provided in the exhaust port 6. When the compression piston 10 moves from the bottom dead center to the top dead center, the ionic liquid rises and compresses the hydrogen under the push of the compression piston 10. When the hydrogen pressure reaches the rated value, the exhaust valve opens.

[0031] Embodiment 2

[0032] See also Figure 1-Figure 5 On the basis of the first embodiment, the adjusting plate 3 is slidably sleeved with the compression cylinder 1, the inner side of the compression piston 10 is slidably sleeved with a fixed plate 4 for adjusting the opening of the buffer groove 14, the top of the compression piston 10 is fixedly connected with a fixed rod 11 for driving the fixed plate 4 to move synchronously, the fixed rod 11 is fixedly connected with the fixed plate 4, the fixed rod 11 is rotatably connected with the adjusting plate 3, the number of the buffer grooves 14 is set to be several and the several buffer grooves 14 are evenly arranged on the adjusting plate 3, the shape of the buffer groove 14 is set to be fan-shaped, the top surface of the fixed plate 4 is provided with a connecting groove 15 corresponding to the buffer groove 14, the number and shape of the connecting groove 15 correspond to the buffer groove 14, and the connecting groove 15 is The fixing rod 11 drives the adjusting plate 3 to move synchronously, so that the adjusting plate 3 is always located at the top of the liquid surface of the ionic liquid during the circulation process of compressed hydrogen. A moving magnetic block 12 is fixedly arranged on the top of the adjusting plate 3. A fixed magnetic block 13 corresponding to the moving magnetic block 12 is arranged inside the compression cylinder 1. The acting force between the fixed magnetic block 13 and the corresponding moving magnetic block 12 is an attractive force. The number of fixed magnetic blocks 13 is set to be several, the number of moving magnetic blocks 12 is set to be two and the two moving magnetic blocks 12 are symmetrically arranged on both sides of the adjusting plate 3. The number of fixed magnetic blocks 13 corresponding to a single moving magnetic block 12 is at least two. The fixed magnetic blocks 13 are arranged in the compression cylinder 1 at different heights and the plane positions are staggered with each other. (See Figure 2) The fixed magnetic block 13 corresponding to the lower dead point of the adjustment plate 3 attracts the moving magnetic block 12, so that the moving magnetic block 12 drives the adjustment plate 3 to rotate to the position corresponding to the buffer groove 14 and the connecting groove 15. The fixed magnetic block 13 corresponding to the upper dead point of the adjustment plate 3 attracts the moving magnetic block 12, so that the moving magnetic block 12 drives the adjustment plate 3 to rotate to the position corresponding to the buffer groove 14 and the bottom plate surface of the fixed plate 4. The fixed plate 4 blocks the buffer groove 14. When the compression piston 10 moves to the upper dead point, the opening of the buffer groove 14 is reduced, so that the top of the ionic liquid is closed. The rated area reduces the possibility of the loss of the ionic liquid. When the compression piston 10 is reset, the buffer groove 14 corresponds to the connecting groove 15 and opens. The adjustment plate 3 is always located at the top of the ionic liquid during the entire compression cycle, reducing the degree of fluctuation of the liquid level of the ionic liquid, ensuring the reliability of the ionic liquid seal, and further reducing the degree of loss of the ionic liquid.

[0033] Embodiment 3

[0034] See also Figure 1-Figure 6 On the basis of the second embodiment, the adjusting plate 3 can be lifted and rotatably connected with the fixing rod 11 relative to the fixing rod 11, and the fixing rod 11 is fixedly sleeved with a supporting block 16 for supporting the adjusting plate 3 at the top of the rod body. Both sides of the top of the supporting block 16 are provided with arc-shaped supporting grooves 20, and both sides of the bottom of the fixing plate 4 are provided with arc-shaped limiting grooves 21. The bottom of the adjusting plate 3 is fixedly connected with a lower top block 17 for cooperating with the supporting groove 20, and the top part of the adjusting plate 3 is fixedly connected with an upper top block 18 for cooperating with the limiting groove 21. The side surfaces of the upper top block 18 and the lower top block 17 are both arranged as inclined surfaces, and the side walls on both sides of the supporting groove 20 are arranged as inclined surfaces corresponding to the lower top block 17, and the side walls on both sides of the limiting groove 21 are arranged as inclined surfaces corresponding to the upper top block 18. When the lower top block 17 is located in the supporting groove 20, the upper top block 18 abuts against the top surface of the fixing plate 4 to limit the shaking of the adjusting plate 3.

[0035] When the compression piston 10 rises, the adjustment plate 3 rotates to drive the lower top block 17 and the upper top block 18 to rotate, and the lower top block 17 moves to abut against the side wall inclined surface of the support groove 20. At this time, the upper top block 18 corresponds to the position of the limit groove 21, and the fixed plate 4 removes the restriction on the rise of the adjustment plate 3. The side wall of the support groove 20 pushes the lower top block 17 to rise, and the lower top block 17 drives the adjustment plate 3 to rise during the rotation. At this time, the upper top block 18 is embedded in the limit groove 21, and the limit groove 21 cooperates with the support block 16 to limit the up and down shaking of the adjustment plate 3. Conversely, during the descent of the compression piston 10, the upper top block 18 rotates relative to the fixed plate 4, so that the upper top block 18 The lower top block 17 is disengaged from the limiting groove 21, and the lower top block 17 is re-embedded in the supporting groove 20. In the process of the fixing rod 11 driving the adjusting plate 3 to reciprocate, it is ensured that the distance between the upper part of the adjusting plate 3 in the compression cylinder 1 and the ionic liquid is increased, so that the ionic liquid can fluctuate within the rated range to ensure fluidity, so that the heat of the ionic liquid can be dispersed through flow, and the heat absorbed by the ionic liquid is locally concentrated. When the adjusting plate 3 descends to the lower dead point, the adjusting plate 3 rotates and descends to the bottom to fit the ionic liquid surface, so that before the next compression piston 10 compresses hydrogen, the fluctuation of the ionic liquid is reduced, and the reliability of the use of the hydrogen gas compressor is improved.

[0036] Real-time Example 4

[0037] See also Figure 1-Figure 3 , Figure 6 and Figure 7 , based on the third embodiment, (see Figure 3 ) A plurality of rotating blades 19 for driving the flow of the ionic liquid are fixedly connected to the bottom of the adjusting plate 3, and the fixed magnetic blocks 13 corresponding to the single moving magnetic blocks 12 are arranged in a spiral manner along the arrangement route 22, so that when the adjusting plate 3 is separated from the top liquid level of the ionic liquid by a rated distance, the adjusting plate 3 rotates to drive the upper top block 18 to slide in the limiting groove 21, and the adjusting plate 3 drives the rotating blades 19 to rotate, so that the ionic liquid can fluctuate greatly within the rated range, and the rotating blades 19 stir the ionic liquid, thereby further improving the uniformity of heat distribution in the ionic liquid.

[0038] The method of use (working principle) of the present invention is as follows:

[0039] The compression piston 10 reciprocates and rises to cooperate with the ionic liquid to compress hydrogen in a circular manner. The compression piston 10 cooperates with the fixed rod 11, the fixed plate 4, and the moving magnetic block 12 to drive the adjustment plate 3 to rise and fall. At the same time, the fixed magnetic blocks 13 of different heights attract the moving magnetic block 12 in turn, so that the moving magnetic block 12 and the adjustment plate 3 rotate along the direction of the misalignment of the fixed magnetic block 13. When the compression piston 10 moves to the upper dead center, the connecting groove 15 and the buffer groove 14 are staggered, so that the opening of the buffer groove 14 is reduced to the rated size, reducing the possibility of the ionic liquid from the exhaust valve. The adjustment plate 3 is always located at the top of the ionic liquid surface. During air intake, the adjustment plate 3 is spaced from the ionic liquid so that the ionic liquid surface can fluctuate within the rated range. At this time, the adjustment plate 3 drives the rotating blade 19 to rotate and stir the ionic liquid, thereby improving the uniformity of heat distribution in the ionic liquid. When the adjustment plate 3 moves to the lower dead center, the upper top block 18 is disengaged from the limiting groove 21, so that the adjustment plate 3 is attached to the free liquid surface of the synchronously moving ionic liquid, and the fluctuation of the ionic liquid is further suppressed before the next hydrogen compression.

Claims

1. A hydrogen gas compressor for PEM hydrogen production, comprising a compression cylinder (1), wherein a compression piston (10) for compressing hydrogen is slidably sleeved inside the compression cylinder (1), and an ionic liquid for sealing the compression piston (10) is filled in a cavity located at the top of the compression piston (10) inside the compression cylinder (1), characterized in that: An adjusting mechanism for adjusting the fluctuation of the liquid level of the ionic liquid is arranged on the inner side of the compression cylinder (1), and the adjusting mechanism can shield the liquid level of the ionic liquid to limit the fluctuation degree of the ionic liquid; The adjustment mechanism comprises an adjustment plate (3); A buffer groove (14) for connecting hydrogen and ionic liquid is provided on the top of the regulating plate (3); the height of the buffer groove (14) can be changed as the height of the regulating plate (3) moves; the opening of the buffer groove (14) is adjusted to adjust the size of the area where the regulating plate (3) limits the liquid surface of the ionic liquid, so as to adjust the degree of limitation on the fluctuating liquid surface; The adjusting plate (3) is slidably sleeved with the compression cylinder (1); a fixing plate (4) for adjusting the opening of the buffer groove (14) is slidably provided on the upper side of the adjusting plate (3); a connecting groove (15) is provided on the top surface of the fixing plate (4); a fixing rod (11) for driving the fixing plate (4) to move synchronously is fixedly connected to the top of the compression piston (10); the fixing rod (11) is fixedly connected to the fixing plate (4); and the fixing rod (11) is rotatably connected to the adjusting plate (3); A moving magnetic block (12) is fixedly arranged at the top end of the adjusting plate (3), and a fixed magnetic block (13) corresponding to the moving magnetic block (12) is arranged in the compression cylinder (1). The acting force between the fixed magnetic block (13) and the corresponding moving magnetic block (12) is an attractive force. The number of the fixed magnetic blocks (13) is set to be a plurality. The fixed magnetic blocks (13) corresponding to the moving magnetic block (12) are arranged in the compression cylinder (1) at different heights and their plane positions are staggered. The fixed magnetic blocks (13) at different heights attract the moving magnetic block (12) in turn during the lifting process of the adjusting plate (3), driving the adjusting plate (3) to rotate, thereby changing the size of the corresponding area of ​​the buffer groove (14) and the connecting groove (15), and adjusting the opening of the buffer groove (14). The number of the buffer grooves (14) is set to be a plurality and the plurality of buffer grooves (14) are evenly spaced and arranged on the adjustment plate (3); the shape of the buffer grooves (14) is set to be fan-shaped; the number and shape of the connecting grooves (15) correspond to the buffer grooves (14); the number of the moving magnetic blocks (12) is set to be two and the two moving magnetic blocks (12) are symmetrically arranged on both sides of the adjustment plate (3); A support block (16) for supporting the adjustment plate (3) is fixedly sleeved at the top of the fixing rod (11) body, and arc-shaped support grooves (20) are provided on both sides of the top of the support block (16). Arc-shaped limiting grooves (21) are provided on both sides of the bottom of the fixing plate (4). A lower top block (17) for cooperating with the support groove (20) is fixedly connected to the bottom of the adjustment plate (3), and an upper top block (18) for cooperating with the limiting groove (21) is fixedly connected to the top of the adjustment plate (3).

2. A hydrogen gas compressor for PEM hydrogen production according to claim 1, characterized in that: The side surfaces of the upper top block (18) and the lower top block (17) are both arranged as inclined surfaces, the side walls on both sides of the support groove (20) are arranged as inclined surfaces corresponding to the lower top block (17), and the side walls on both sides of the limit groove (21) are arranged as inclined surfaces corresponding to the upper top block (18).

3. A hydrogen gas compressor for PEM hydrogen production according to claim 1, characterized in that: A plurality of rotating blades (19) for driving the flow of the ionic liquid are fixedly connected to the bottom of the regulating plate (3), and the fixed magnetic blocks (13) corresponding to the single moving magnetic block (12) are arranged in a spiral lifting manner.

4. A hydrogen gas compressor for PEM hydrogen production according to claim 1, characterized in that: An air inlet (5) is provided on one side of the top of the compression cylinder (1), and an air outlet (6) is provided on the other side of the top of the compression cylinder (1). An air inlet valve is provided in the air inlet (5), and an air outlet valve is provided in the air outlet (6).

5. A hydrogen gas compressor for PEM hydrogen production according to claim 1, characterized in that: An oil cylinder (2) is fixedly arranged at the bottom of the compression cylinder (1), and a hydraulic piston (9) for driving the compression piston (10) to move is slidably sleeved on the inner side of the oil cylinder (2). A No. 1 oil chamber opening (7) is provided at the midpoint of the bottom of the oil cylinder (2), and a No. 2 oil chamber opening (8) is provided on one side of the top of the oil cylinder (2). The No. 2 oil chamber opening (8) and the No. 1 oil chamber opening (7) are both connected to an oil circuit for respectively adjusting the top and bottom oil pressures of the hydraulic piston (9).

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