A hydrogen compression device

Abstract

The application relates to the field of hydrogen production, in particular to a hydrogen compression device which comprises a shell, the shell is provided with an air outlet pipe for air outlet and an air inlet pipe for air inlet, a sealing nut is sleeved on the air outlet pipe and the air inlet pipe in a threaded mode, a flexible sealing ring is also sleeved on the air outlet pipe and the air inlet pipe, the flexible sealing ring is pressed on the shell by the sealing nut, an air-tight cover is further arranged on the shell, the air-tight cover wraps the connecting positions of the air outlet pipe and the shell and the air inlet pipe and the shell, a compensation runner is rotationally arranged in the air-tight cover, an air guide pipe is further arranged in the air-tight cover, the air guide pipe is used for guiding the hydrogen leaked from the air outlet pipe and the air inlet pipe to the compensation runner, a plurality of rotating blocks are arranged on the sealing nut, the compensation runner drives the sealing nut to rotate and press the flexible sealing ring. The application has the effect of improving the air tightness of the air-tight device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydrogen production, in particular to a hydrogen compression device. BACKGROUND

[0002] With the vigorous development of the new energy industry, hydrogen supply stations have gradually begun to be built, and hydrogen often needs to be compressed by a hydrogen compression device before transportation. After the hydrogen is compressed, it can be transported in larger quantities at one time.

[0003] The hydrogen compression device is usually reciprocating piston type or rotary type. When the reciprocating piston type discharges compressed hydrogen, the hydrogen pressure at the outlet pipe is high, and the outlet and inlet of the reciprocating piston type usually need to be matched with an outlet pipe, an outlet valve, and an inlet pipe, an inlet valve to separate the outlet and inlet, resulting in intermittent gas movement in a single outlet pipe or inlet pipe, and the pressure of the transported gas is very high each time. The vibration generated thereby easily causes the gas-tight device to loosen, thereby causing hydrogen leakage. SUMMARY

[0004] In order to improve the problem that intermittent gas transportation generates vibration which easily causes the gas-tight device to loosen, the present application provides a hydrogen compression device.

[0005] The hydrogen compression device provided by the present application adopts the following technical solution:

[0006] A hydrogen compression device, comprising a housing, an outlet pipe for outlet and an inlet pipe for inlet are arranged on the housing, a sealing nut is sleeved and threadedly connected on the outlet pipe and the inlet pipe, a flexible sealing ring is further sleeved on the outlet pipe and the inlet pipe, the sealing nut presses the flexible sealing ring against the housing, a gas-tight cover is further arranged on the housing, the gas-tight cover wraps the connection between the outlet pipe and the housing and the connection between the inlet pipe and the housing, a compensation runner is rotatably arranged in the gas-tight cover, a gas guide pipe is further arranged in the gas-tight cover, the gas guide pipe is used to guide the hydrogen leaked from the outlet pipe and the inlet pipe to the compensation runner, a plurality of rotating blocks are arranged on the sealing nut, the compensation runner rotates to drive the sealing nut to rotate and press the flexible sealing ring.

[0007] By adopting the technical scheme, the leaked hydrogen is guided by the air-tight cover and the air guide pipe, and the leaked hydrogen directly impacts the compensation runner to drive the compensation runner to rotate due to the high pressure in the shell and the great impact force, the sealing nut is driven to rotate by the compensation runner, so that the flexible sealing ring is pressed more tightly, the flexible sealing ring is compensated and pressed when the flexible sealing ring is loosened due to vibration to cause leakage, the flexible sealing ring is sealed again, the hydrogen leakage is reduced, the compensation feedback is completed, and the service life of the flexible sealing ring is greatly improved, the air tightness is improved, and the compensation feedback reduces the large hydrogen leakage caused by long-time leakage.

[0008] Optionally, the compensation runner is located between the air inlet pipe and the air outlet pipe, and the same compensation runner simultaneously drives the sealing nut on the air inlet pipe and the sealing nut on the air outlet pipe to rotate.

[0009] By adopting the technical scheme, the rotation of the two sealing nuts is driven by one compensation runner, which is more convenient, reduces the material, and saves the resources required for manufacturing.

[0010] Optionally, a base block is arranged in the air-tight cover, a first sliding groove is formed in the base block, a first clamping box is slidably arranged in the first sliding groove, a first clamping plate is telescopically arranged on the first clamping box, a first reset member is arranged in the first clamping box, the first reset member is telescopically arranged in a direction in which the first clamping plate is ejected out of the first clamping box, a plurality of first inclined teeth and a plurality of first driving teeth are arranged on the first clamping plate, a plurality of second inclined teeth meshing with the first inclined teeth are arranged on the compensation runner, the rotating block of the sealing nut on the air outlet pipe is meshed with the first driving teeth, the first inclined teeth are inclined away from the air outlet pipe, the second inclined teeth are inclined in a direction opposite to the first inclined teeth, and the first inclined teeth are engaged with the second inclined teeth.

[0011] By adopting the above technical scheme, when the hydrogen leakage of the gas outlet pipe impacts the rotation of the compensation rotating wheel, the compensation rotation drives the first clamping plate through the second bevel gear and the first bevel gear, the first clamping plate drives the sealing nut through the first driving gear and the rotating block, and the sealing nut is driven to rotate a certain distance through the inertial rotation of the compensation rotating wheel, so that the flexible sealing element is tightly sealed again; and if the hydrogen leakage of the gas inlet pipe causes the compensation rotating wheel to rotate in the opposite direction, the inclined surfaces of the first bevel gear and the second bevel gear are in contact, so that the first clamping plate is pushed to retract into the first clamping box, and after the first bevel gear rotates, the first clamping plate is reset under the elastic force of the first reset element. In this way, the compensation rotating wheel will not drive the sealing nut to rotate in the opposite direction, thereby reducing the probability of the sealing nut rotating in the loosening direction and improving the stability.

[0012] Optionally, a second sliding groove is further formed in the base block, a second clamping box is slidably arranged in the second sliding groove, a second clamping plate is telescopically arranged on the second clamping box, a second reset element is arranged in the second clamping box, the second reset element is telescopically arranged in a direction of pushing the second clamping plate out of the second clamping box, a plurality of third bevel gears and a plurality of second driving gears are arranged on the second clamping plate, a plurality of fourth bevel gears meshing with the third bevel gears are further arranged on the compensation rotating wheel, the rotating block of the sealing nut on the gas inlet pipe is meshed with the second driving gears, the inclination direction of the third bevel gears is opposite to that of the first bevel gears, the inclination direction of the fourth bevel gears is opposite to that of the second bevel gears, and the third bevel gears are engaged with the fourth bevel gears.

[0013] By adopting the above technical scheme, when the hydrogen leakage of the gas inlet pipe impacts the rotation of the compensation rotating wheel, the compensation rotation drives the second clamping plate through the fourth bevel gear and the third bevel gear, the second clamping plate drives the sealing nut through the second driving gear and the rotating block, and the sealing nut is driven to rotate a certain distance through the inertial rotation of the compensation rotating wheel, so that the flexible sealing element is tightly sealed again; and if the hydrogen leakage of the gas outlet pipe causes the compensation rotating wheel to rotate in the opposite direction, the inclined surfaces of the third bevel gear and the fourth bevel gear are in contact, so that the second clamping plate is pushed to retract into the second clamping box, and after the third bevel gear rotates, the second clamping plate is reset under the elastic force of the second reset element. In this way, the compensation rotating wheel will not drive the sealing nut to rotate in the opposite direction, thereby reducing the probability of the sealing nut rotating in the loosening direction and improving the stability.

[0014] Optionally, a position giving groove is formed in the base block, and a plurality of wind deflectors are further arranged on the compensation rotating wheel, the wind deflectors are used to block the wind led out by the air inlet pipe to drive the rotation of the compensation rotating wheel, and the position giving groove is used for the wind deflectors to rotate through.

[0015] By adopting the technical scheme, the force area of the compensation runner subjected to hydrogen impact is increased by the wind shield, the impact force is used to a greater extent, the loss is reduced, and the pressure received is also reduced, thereby protecting the compensation runner.

[0016] Optionally, a telescopic slot is formed in the shell, and an anti-reverse block is telescopically arranged in the telescopic slot and telescopically slides along the direction of extending out of or retreating into the telescopic slot; an anti-reverse groove is formed in the sealing nut; the anti-reverse block is used for being inserted into and abutting against the inner wall of the anti-reverse groove to limit the rotation of the sealing nut; an anti-reverse inclined surface is formed in the anti-reverse block; and when the sealing nut rotates in the direction of being screwed, the inner wall of the anti-reverse groove abuts against the anti-reverse inclined surface to make the anti-reverse block retreat into the telescopic slot.

[0017] By adopting the technical scheme, when the sealing nut rotates in the direction of being unscrewed, the inner wall of the anti-reverse groove abuts against the side wall of the anti-reverse block to limit the rotation of the sealing nut, thereby further reducing the probability of the sealing nut being unscrewed and improving the stability of the sealing nut; when the sealing nut rotates in the direction of being screwed, the inner wall of the anti-reverse groove abuts against the anti-reverse inclined surface to make the anti-reverse block retreat into the telescopic slot, and the sealing nut can continue to rotate, which is convenient and fast.

[0018] Optionally, a compression ring groove is formed in the sealing nut, and a compression ring is arranged on the flexible sealing ring; the compression ring groove is used for inserting the compression ring into and compressing the flexible sealing ring; and the compression ring abuts against and is attached to the gas outlet pipe or the gas inlet pipe.

[0019] By adopting the technical scheme, the flexible sealing ring is always attached to the gas outlet pipe or the gas inlet pipe through the compression ring groove and the compression ring, thereby reducing the probability that the flexible sealing ring deforms and expands outward due to excessive pressure and causes a gap in the attachment to the side wall of the gas outlet pipe or the gas inlet pipe, and improving the stability.

[0020] Optionally, a gas return pipe is communicatively arranged on the gas-tight cover, and the gas return pipe is also communicatively arranged on the gas inlet pipe; the gas return pipe is used for guiding the leaked hydrogen in the gas-tight cover into the gas inlet pipe to recycle the hydrogen; and a one-way air valve is arranged in the gas return pipe, and the one-way air valve is used for blocking the hydrogen in the gas inlet pipe from flowing reversely into the gas return pipe.

[0021] By adopting the technical scheme, the leaked hydrogen is guided into the gas inlet pipe through the gas return pipe, and is recycled through the gas inlet pipe, so that the hydrogen enters the shell again for compression, and the probability of the internal pressure of the gas-tight cover increasing due to the blocked leaked hydrogen is reduced, thereby playing a protection role, realizing hydrogen recycling, and improving the resource recycling rate.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. When the flexible sealing ring is loosened due to vibration, the compensation compression of the flexible sealing ring makes the flexible sealing ring seal again, and the hydrogen leakage is reduced.

[0024] 2. When the flexible sealing ring is used for a long time, the aging of the flexible sealing ring leads to a decrease in the elasticity of the flexible sealing ring, and the insufficient elastic pressure leads to hydrogen leakage. The compensation compression of the flexible sealing ring realizes sealing again, completes compensation feedback, greatly improves the service life of the flexible sealing ring, improves the air tightness, and reduces the large hydrogen leakage caused by long-time leakage through compensation feedback. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a hydrogen compression device in the embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the structure after the large cover is cut open.

[0027] Figure 3 It is an exploded structural schematic diagram highlighting the compression ring groove.

[0028] Figure 4 It is a schematic diagram of the structure after the small cover is cut open.

[0029] Figure 5 It is Figure 4 It is an enlarged structural schematic diagram of A in FIG. 1.

[0030] Figure 6 It is an exploded structural schematic diagram of the base block.

[0031] Figure 7 It is a structural schematic diagram highlighting the telescopic groove.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, shell; 11, gas outlet pipe; 12, gas inlet pipe; 13, sealing nut; 14, flexible sealing ring; 2, gas-tight cover; 21, compensation runner; 211, large cover; 212, small cover; 22, air guide pipe; 221, air hole; 23, rotating block; 3, base block; 31, first sliding groove; 32, first clamping box; 321, limiting block; 322, limiting groove; 323, first clamping groove; 33, first clamping plate; 34, first reset piece; 35, first helical tooth; 351, first driving tooth; 36, second helical tooth; 4, second sliding groove; 41, second clamping box; 42, second clamping plate; 421, second clamping groove; 43, second reset piece; 44, third helical tooth; 441, second driving tooth; 45, fourth helical tooth; 5, accommodation groove; 51, wind shield; 6, telescopic groove; 61, anti-reverse block; 62, anti-reverse groove; 63, anti-reverse inclined surface; 64, ejection spring; 7, compression ring groove; 71, compression ring; 8, return air pipe; 81, one-way air valve. DETAILED DESCRIPTION

[0033] The following description will be made in conjunction with the accompanying drawings Figures 1-7 The present application is further described in detail.

[0034] The present application discloses a hydrogen compression device. Referring to Figure 1 The hydrogen compression device comprises a shell 1, which comprises a crank mechanism, a piston mechanism, a diaphragm mechanism and a compensation oil mechanism. A gas outlet pipe 11 for gas outlet and an air inlet pipe 12 for air inlet are threadedly connected to the shell 1. The piston mechanism drives the diaphragm mechanism to suck in the hydrogen in the air inlet pipe 12 and compresses it to push it into the gas outlet pipe 11. The air inlet pipe 12 and the gas outlet pipe 11 are both provided with a one-way valve.

[0035] Referring to Figure 2 With Figure 3 The end of the gas outlet pipe 11 and the end of the air inlet pipe 12 close to the shell 1 are both provided with a sealing nut 13. That is, the end of the gas outlet pipe 11 and the end of the air inlet pipe 12 close to the shell 1 are both provided with threads for the sealing nut 13. A compression ring groove 7 is circumferentially formed on the inner circumferential sidewall of the sealing nut 13 and is also formed on the sidewall of the sealing nut 13 facing the shell 1. A flexible sealing ring 14 is circumferentially sleeved on the gas outlet pipe 11 and the air inlet pipe 12. The inner circumferential sidewall of the flexible sealing ring 14 abuts against the outer sidewall of the gas outlet pipe 11 or the air inlet pipe 12. A compression ring 71 is circumferentially fixedly connected to the inner circumferential sidewall of the flexible sealing ring 14. The compression ring 71 extends and is inserted into the compression ring groove 7 in a direction away from the shell 1. The sealing nut 13 compresses the flexible sealing ring 14 against the shell 1.

[0036] Referring to Figure 2 With Figure 3 In this embodiment, the sealing nut 13 at the top end of the shell 1 points to the direction of the outer sidewall of the shell 1 closest to the sealing nut 13, which is referred to as down. The direction opposite to down is referred to as up.

[0037] Referring to Figure 4 With Figure 5 The shell 1 is also fixedly connected with an airtight cover 2. The airtight cover 2 comprises a large cover 211 and a small cover 212. The small cover 212 wraps the connection between the gas outlet pipe 11 and the shell 1 and the connection between the air inlet pipe 12 and the shell 1. The large cover 211 wraps the small cover 212, the end of the air inlet pipe 12 close to the shell 1, the end of the gas outlet pipe 11 close to the shell 1 and the sealing nut 13. A compensation runner 21 is rotatably connected in the large cover 211. An air guide pipe 22 is also installed in the airtight cover 2. One end of the air guide pipe 22 is fixedly connected to the small cover 212 wrapping the connection between the gas outlet pipe 11 and the shell 1. The other end of the air guide pipe 22 is fixedly connected to the small cover 212 wrapping the connection between the air inlet pipe 12 and the shell 1.

[0038] Referring to Figure 5The compensation runner 21 is located in the middle position of the air inlet pipe 12 and the air outlet pipe 11, the air hole 221 is arranged in the middle position of the air guide pipe 22, the plurality of wind baffles 51 are fixedly connected to the compensation runner 21, the plurality of wind baffles 51 are uniformly distributed on the outer ring side wall of the compensation runner 21 in a circumferential direction, the wind baffles 51 are turned into and out of the air guide pipe 22 from the air hole 221, the air guide pipe 22 is used for guiding the hydrogen leaked from the air outlet pipe 11 and the air inlet pipe 12 to the compensation runner 21, and blowing the wind baffles 51 to drive the compensation runner 21 to rotate.

[0039] With reference to Figure 5 The air-tight cover 2 is fixedly connected with the base block 3, the side wall of the base block 3 towards the compensation runner 21 is provided with the accommodation slot 5, the accommodation slot 5 is located at the position of the base block 3 close to the outer side wall of the shell 1, and the accommodation slot 5 is used for the rotation accommodation of the wind baffles 51. The side wall of the base block 3 towards the compensation runner 21 is also provided with the first sliding groove 31 and the second sliding groove 4, the first sliding groove 31 and the second sliding groove 4 are distributed along the height direction of the base block 3, and the second sliding groove 4, the first sliding groove 31 and the accommodation slot 5 are sequentially arranged from top to bottom, the first sliding groove 31 and the second sliding groove 4 are extended perpendicularly to the height direction of the base block 3, and the extension direction of the first sliding groove 31 and the second sliding groove 4 is parallel to the length direction of the air guide pipe 22.

[0040] With reference to Figure 6 The first clamping box 32 is slidably arranged in the first sliding groove 31, the first clamping box 32 slides along the extension direction of the first sliding groove 31, the side wall of the first clamping box 32 is in close contact with the inner wall of the first sliding groove 31, and the length direction of the first clamping box 32 is extended along the sliding direction of the first clamping box 32. The two limiting blocks 321 are fixedly connected to the first clamping box 32, the two limiting blocks 321 are arranged on the two side walls of the first clamping box 32 along the length direction, the limiting grooves 322 are arranged on the two mutually facing inner walls of the first sliding groove 31, the limiting grooves 322 are extended along the sliding direction of the first clamping box 32, the limiting blocks 321 are inserted into and slidably arranged in the limiting grooves 322, and the side wall of the limiting block 321 is in close contact with the inner wall of the limiting groove 322.

[0041] With reference to Figure 5 And Figure 6, the first clamping box 32 is provided with a first clamping groove 323 on the side wall facing the compensating rotating wheel 21, a first clamping plate 33 is slidably arranged in the first clamping groove 323, the first clamping plate 33 slides towards the outside of the first clamping groove 323 or into the first clamping groove 323, and the side wall of the first clamping plate 33 is in constant contact with the inner wall of the first clamping groove 323. A plurality of first reset members 34 are arranged in the first clamping box 32, in this embodiment, the first reset members 34 can be springs, one end of the first reset member 34 is fixedly connected to the bottom wall of the first clamping groove 323 facing the opening surface thereof, the other end of the first reset member 34 is fixedly connected to the side wall of the first clamping plate 33 away from the compensating rotating wheel 21, and the plurality of first reset members 34 are evenly distributed along the length direction of the first clamping box 32, and the first reset members 34 are retractable in the direction of ejecting the first clamping plate 33 outwards of the first clamping box 32.

[0042] Referring to Figure 5 With Figure 6 , the first clamping plate 33 is fixedly connected with a plurality of first bevel teeth 35 and a plurality of first driving teeth 351 on the side wall facing the compensating rotating wheel 21, the first clamping plate 33 is divided into two parts by a middle segment in the length direction of the first clamping plate 33, the first bevel teeth 35 are located on the side of the middle segment close to the compensating rotating wheel 21, and the first driving teeth 351 are located on the side of the middle segment close to the air outlet pipe 11, and the first bevel teeth 35 and the first driving teeth 351 are evenly distributed along the length direction of the first clamping plate 33.

[0043] Referring to Figure 3 With Figure 5 With Figure 6 , a plurality of second bevel teeth 36 meshing with the first bevel teeth 35 are fixedly connected to the compensating rotating wheel 21, the plurality of second bevel teeth 36 are evenly distributed on the outer circumferential wall of the compensating rotating wheel 21 at corresponding height positions, and a plurality of rotating blocks 23 are arranged on the outer circumferential wall of the sealing nut 13 of the air outlet pipe 11, the plurality of rotating blocks 23 are evenly distributed in the circumferential direction, and the rotating blocks 23 of the sealing nut 13 of the air outlet pipe 11 are used for meshing with the first driving teeth 351. The first bevel teeth 35 and the second bevel teeth 36 are both in the shape of a right triangular prism, the first bevel teeth 35 are inclined away from the air outlet pipe 11, that is, the side of the first bevel teeth 35 close to the air outlet pipe 11 is perpendicular to the outer side wall of the compensating rotating wheel 21, the inclination direction of the second bevel teeth 36 is opposite to that of the first bevel teeth 35, the side of the first bevel teeth 35 perpendicular to the second bevel teeth 36 is in engagement with the side of the second bevel teeth 36 perpendicular thereto, and the compensating rotating wheel 21 drives the sealing nut 13 to rotate to press the flexible sealing ring 14.

[0044] Referring to Figure 6The second clamping box 41 is slidably arranged in the second sliding groove 4, and slides along the opening direction of the second sliding groove 4. The side wall of the second clamping box 41 is slidably arranged on the inner wall of the second sliding groove 4, and the length direction of the second clamping box 41 extends along the sliding direction of the second clamping box 41. The limiting blocks 321 are also fixedly connected to the second clamping box 41, and the two limiting blocks 321 are arranged on the two side walls of the second clamping box 41 in the length direction. The limiting grooves 322 are also arranged on the two mutually facing inner walls of the second sliding groove 4, and extend along the sliding direction of the second clamping box 41. The limiting blocks 321 are inserted into and slidably arranged in the limiting grooves 322, and the side wall of the limiting block 321 is slidably arranged on the inner wall of the limiting groove 322.

[0045] With reference to Figure 5 With Figure 6 The second clamping box 41 is slidably arranged in the second sliding groove 4, and slides along the opening direction of the second sliding groove 4. The side wall of the second clamping box 41 is slidably arranged on the inner wall of the second sliding groove 4, and the length direction of the second clamping box 41 extends along the sliding direction of the second clamping box 41. The limiting blocks 321 are also fixedly connected to the second clamping box 41, and the two limiting blocks 321 are arranged on the two side walls of the second clamping box 41 in the length direction. The limiting grooves 322 are also arranged on the two mutually facing inner walls of the second sliding groove 4, and extend along the sliding direction of the second clamping box 41. The limiting blocks 321 are inserted into and slidably arranged in the limiting grooves 322, and the side wall of the limiting block 321 is slidably arranged on the inner wall of the limiting groove 322.

[0046] With reference to Figure 5 With Figure 6 The second clamping box 41 is slidably arranged in the second sliding groove 4, and slides along the opening direction of the second sliding groove 4. The side wall of the second clamping box 41 is slidably arranged on the inner wall of the second sliding groove 4, and the length direction of the second clamping box 41 extends along the sliding direction of the second clamping box 41. The limiting blocks 321 are also fixedly connected to the second clamping box 41, and the two limiting blocks 321 are arranged on the two side walls of the second clamping box 41 in the length direction. The limiting grooves 322 are also arranged on the two mutually facing inner walls of the second sliding groove 4, and extend along the sliding direction of the second clamping box 41. The limiting blocks 321 are inserted into and slidably arranged in the limiting grooves 322, and the side wall of the limiting block 321 is slidably arranged on the inner wall of the limiting groove 322.

[0047] With reference to Figure 3 With Figure 5 With Figure 6The compensation rotating wheel 21 is fixedly connected with a plurality of fourth bevel teeth 45 engaged with the third bevel teeth 44, the fourth bevel teeth 45 are uniformly distributed on the outer wall of the compensation rotating wheel 21 at corresponding height positions, the rotating block 23 is also fixedly connected to the outer wall of the sealing nut 13 on the air inlet pipe 12, the rotating blocks 23 are uniformly distributed in the circumferential direction, and the rotating blocks 23 of the sealing nut 13 on the air inlet pipe 12 are used for engaging with the second driving teeth 441. The third bevel teeth 44 and the fourth bevel teeth 45 are both in the shape of a right triangle, the third bevel teeth 44 are inclined away from the air inlet pipe 12, that is, the side of the third bevel teeth 44 close to the air inlet pipe 12 is perpendicular to the outer wall of the compensation rotating wheel 21, the inclination direction of the third bevel teeth 44 is opposite to the inclination direction of the first bevel teeth 35, the inclination direction of the fourth bevel teeth 45 is opposite to the inclination direction of the third bevel teeth 44, the side of the third bevel teeth 44 perpendicular to the fourth bevel teeth 45 is buckled, and the compensation rotating wheel 21 drives the sealing nut 13 to rotate to compress the flexible sealing ring 14.

[0048] Referring to Figure 5 The second bevel teeth 36, the fourth bevel teeth 45 and the wind deflector 51 on the compensation rotating wheel 21 are distributed in an up-down manner, and from top to bottom, they are the fourth bevel teeth 45, the second bevel teeth 36 and the wind deflector 51.

[0049] Referring to Figure 2 With Figure 3 With Figure 7 Two telescopic grooves 6 are formed in the shell 1, and the two telescopic grooves 6 correspond to the sealing nut 13 on the air inlet pipe 11 and the air outlet pipe 12 respectively. An anti-reverse block 61 is telescopically slid in the telescopic groove 6, and the anti-reverse block 61 slides in the direction of sliding out of the telescopic groove 6 or retreating into the telescopic groove 6. A pop-up spring 64 is installed in the telescopic groove 6, one end of the pop-up spring 64 is fixedly connected to the bottom wall of the telescopic groove 6 facing the opening surface thereof, the other end of the pop-up spring 64 is fixedly connected to the side wall of the anti-reverse block 61 facing the bottom wall of the telescopic groove 6, and the pop-up spring 64 is telescopic in the direction of popping up the end of the anti-reverse block 61 to the outside of the telescopic groove 6. A plurality of anti-reverse grooves 62 are formed in the outer wall of the sealing nut 13 facing the shell 1, and the anti-reverse grooves 62 are uniformly distributed in the circumferential direction. The end of the anti-reverse block 61 located outside the telescopic groove 6 is used for being inserted into the anti-reverse groove 62. An anti-reverse inclined surface 63 is formed on the end of the anti-reverse block 61 located outside the telescopic groove 6, the anti-reverse inclined surface 63 is inclined in the direction of being farther away from the pop-up spring 64, and the cross-sectional width of the end of the anti-reverse block 61 is smaller. When the sealing nut 13 rotates in the tightening direction, the inner wall of the anti-reverse groove 62 abuts against the anti-reverse inclined surface 63 to make the anti-reverse block 61 retreat into the telescopic groove 6; when the anti-reverse block 61 rotates in the loosening direction, the end of the anti-reverse block 61 away from the anti-reverse inclined surface 63 abuts against the inner wall of the anti-reverse groove 62 to limit the rotation of the sealing nut 13.

[0050] Referring to Figure 5The gas return pipe 8 is installed on the large cover 211, one end of the gas return pipe 8 is fixedly connected to the large cover 211, the other end of the gas return pipe 8 is fixedly connected to the air inlet pipe 12, the two ends of the gas return pipe 8 are communicated with the inside of the large cover 211 and the inside of the air inlet pipe 12 respectively, and the gas return pipe 8 is used for guiding the leaked hydrogen in the gas-tight cover 2 into the air inlet pipe 12 to recycle the hydrogen. The one-way air valve 81 is installed on the gas return pipe 8, in the embodiment, the one-way air valve 81 is a valve that only allows one-way flow of gas, has an anti-backflow effect, and is used for blocking the hydrogen in the air inlet pipe 12 from flowing back into the gas return pipe 8.

[0051] The implementation principle of the hydrogen compression equipment in the embodiment of the application is as follows: when the flexible sealing ring 14 of the air outlet pipe 11 is loosened and hydrogen leakage occurs, the small cover 212 guides the hydrogen to flow into the air guide pipe 22, the air guide pipe 22 guides the hydrogen to impact the wind deflector 51, the wind deflector 51 is impacted and drives the compensation runner 21 to rotate in the corresponding direction, the compensation runner 21 is rotated and drives the first bevel gear 35 to rotate, at this time, the vertical surface of the first bevel gear 35 is in contact with the vertical surface of the second bevel gear 36, thereby driving the second bevel gear 36 to rotate, the second bevel gear 36 drives the first clamping box 32 to slide, the first clamping box 32 drives the first driving tooth 351 of the first clamping plate 33 to slide, the first driving tooth 351 drives the sealing nut 13 corresponding to the engaged rotating block 23 to rotate and tighten, and the flexible sealing ring 14 is more tightly pressed; at the same time, the compensation runner 21 is rotated and drives the third bevel gear 44 to rotate, at this time, the inclined surface of the third bevel gear 44 is in contact with the inclined surface of the fourth bevel gear 45, so that the second clamping plate 42 is guided by the inner wall of the second clamping groove 421 and retreats to the deep part of the second clamping groove 421 under the inclined pressure, and when the third bevel gear 44 rotates and loses the contact, the second clamping plate 42 is reset under the elastic force of the second reset member 43, and the second clamping box 41 does not slide.

[0052] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A hydrogen compression device, comprising a housing (1), wherein the housing (1) is provided with an outlet pipe (11) for discharging gas and an inlet pipe (12) for inlet gas, characterized in that: Both the exhaust pipe (11) and the intake pipe (12) are fitted with threaded sealing nuts (13). Flexible sealing rings (14) are also fitted onto the exhaust pipe (11) and the intake pipe (12). The sealing nuts (13) press the flexible sealing rings (14) tightly onto the housing (1). An airtight cover (2) is also provided on the housing (1). The airtight cover (2) covers the connection between the exhaust pipe (11) and the housing (1) and the connection between the intake pipe (12) and the intake pipe (12). The connection of the housing (1) is enclosed inside. A compensating wheel (21) is rotatably arranged inside the airtight cover (2). A gas duct (22) is also arranged inside the airtight cover (2). The gas duct (22) is used to guide the hydrogen gas leaking from the gas outlet pipe (11) and the gas inlet pipe (12) to the compensating wheel (21). A number of rotating blocks (23) are arranged on the sealing nut (13). The rotation of the compensating wheel (21) drives the sealing nut (13) to rotate and press the flexible sealing ring (14).

2. The hydrogen compression device according to claim 1, characterized in that: The compensation wheel (21) is located between the air inlet pipe (12) and the air outlet pipe (11). The same compensation wheel (21) simultaneously drives the sealing nut (13) on the air inlet pipe (12) and the sealing nut (13) on the air outlet pipe (11) to rotate.

3. The hydrogen compression device according to claim 1, characterized in that: The airtight cover (2) is provided with a base block (3), and a first sliding groove (31) is provided on the base block (3). A first snap-fit ​​box (32) is slidably provided in the first sliding groove (31). A first snap-fit ​​plate (33) is telescopically provided on the first snap-fit ​​box (32). A first reset member (34) is provided in the first snap-fit ​​box (32). The first reset member (34) telescopically extends in the direction that pushes the first snap-fit ​​plate (33) outward from the first snap-fit ​​box (32). A plurality of first helical teeth (35) are provided on the first snap-fit ​​plate (33). And a number of first driving teeth (351), the compensation wheel (21) is provided with a number of second helical teeth (36) that mesh with the first helical teeth (35), the rotating block (23) of the sealing nut (13) on the air outlet pipe (11) meshes with the first driving teeth (351), the first helical teeth (35) are inclined in a direction away from the air outlet pipe (11), the inclination direction of the second helical teeth (36) is opposite to the inclination direction of the first helical teeth (35), and the first helical teeth (35) and the second helical teeth (36) are engaged.

4. A hydrogen compression device according to claim 3, characterized in that: The base block (3) is also provided with a second sliding groove (4), in which a second snap-fit ​​box (41) is slidably disposed. A second snap-fit ​​plate (42) is telescopically disposed on the second snap-fit ​​box (41), and a second reset member (43) is disposed inside the second snap-fit ​​box (41). The second reset member (43) telescopically extends in the direction that pushes the second snap-fit ​​plate (42) outward from the second snap-fit ​​box (41). The second snap-fit ​​plate (42) is provided with a plurality of third helical teeth (44) and a plurality of second driving teeth (45). 41), the compensation wheel (21) is also provided with a number of fourth helical teeth (45) that mesh with the third helical tooth (44), the rotating block (23) of the sealing nut (13) on the air intake pipe (12) meshes with the second driving tooth (441), the inclination direction of the third helical tooth (44) is opposite to the inclination direction of the first helical tooth (35), the inclination direction of the fourth helical tooth (45) is opposite to the inclination direction of the second helical tooth (36), and the third helical tooth (44) and the fourth helical tooth (45) are engaged.

5. A hydrogen compression device according to claim 3, characterized in that: The base block (3) is provided with a clearance groove (5), and the compensation wheel (21) is also provided with several wind baffles (51). The wind baffles (51) are used to block the air drawn out by the air pipe (22) to drive the compensation wheel (21) to rotate. The clearance groove (5) is used to allow the wind baffles (51) to rotate through.

6. A hydrogen compression device according to claim 1, characterized in that: The housing (1) is provided with a telescopic groove (6), and an anti-reverse block (61) is provided in the telescopic groove (6). The anti-reverse block (61) slides in the direction of extending out of or retracting from the telescopic groove (6). The sealing nut (13) is provided with an anti-reverse groove (62). The anti-reverse block (61) is used to insert into and abut against the inner wall of the anti-reverse groove (62) to limit the rotation of the sealing nut (13). The anti-reverse block (61) is provided with an anti-reverse inclined surface (63). When the sealing nut (13) rotates in the tightening direction, the inner wall of the anti-reverse groove (62) abuts against the anti-reverse inclined surface (63) to make the anti-reverse block (61) retract into the telescopic groove (6).

7. A hydrogen compression device according to claim 1, characterized in that: The sealing nut (13) has a pressure ring groove (7), and the flexible sealing ring (14) has a pressure ring (71). The pressure ring groove (7) is used for the pressure ring (71) to be inserted and press the flexible sealing ring (14). The pressure ring (71) abuts against the air outlet pipe (11) or the air inlet pipe (12).

8. A hydrogen compression device according to claim 1, characterized in that: A return gas pipe (8) is connected to the airtight cover (2), and the return gas pipe (8) is also connected to the inlet pipe (12). The return gas pipe (8) is used to guide the hydrogen gas leaked and blocked in the airtight cover (2) into the inlet pipe (12) for hydrogen gas recovery. A one-way gas valve (81) is provided in the return gas pipe (8). The one-way gas valve (81) is used to prevent the hydrogen gas in the inlet pipe (12) from flowing back into the return gas pipe (8).

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