CN219953583U - Hydraulic piston type hydrogen compressor - Google Patents
Hydraulic piston type hydrogen compressor Download PDFInfo
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- CN219953583U CN219953583U CN202320900163.XU CN202320900163U CN219953583U CN 219953583 U CN219953583 U CN 219953583U CN 202320900163 U CN202320900163 U CN 202320900163U CN 219953583 U CN219953583 U CN 219953583U
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- hydrogen
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000001257 hydrogen Substances 0.000 title claims abstract description 76
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 76
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 58
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 77
- 229910052757 nitrogen Inorganic materials 0.000 claims description 38
- 238000003860 storage Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000000740 bleeding effect Effects 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 15
- 239000003921 oil Substances 0.000 description 13
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a hydraulic piston type hydrogen compressor which consists of a cylinder, a first hydraulic cylinder, a second hydraulic cylinder and a hydraulic driving system. The cylinder, the first hydraulic cylinder and the second hydraulic cylinder are horizontally and coaxially arranged; the air cylinder is positioned in the middle and is of a double-acting structure; the first hydraulic cylinder and the second hydraulic cylinder are positioned at the left side and the right side of the air cylinder and are of a single-action structure. The cylinder, the first hydraulic cylinder and the second hydraulic cylinder are respectively provided with a piston, and the three pistons are fixed on the same piston rod. The air cylinder is provided with a hydrogen gas inlet and a compressed hydrogen gas outlet; the first hydraulic cylinder and the second hydraulic cylinder are provided with a hydraulic oil inlet and a hydraulic oil outlet, and the hydraulic oil inlet and the hydraulic oil outlet are connected with a hydraulic driving system through pipelines. The utility model has the advantages that: compared with the traditional double-cylinder hydraulic piston type hydrogen compressor for compressing high-purity hydrogen, the manufacturing cost is low, and the working is safe and reliable.
Description
Technical Field
The utility model relates to a hydrogen compressor, in particular to a hydraulic piston type hydrogen compressor for compressing high-purity hydrogen.
Background
The hydraulic piston type hydrogen compressor consists of a cylinder and a hydraulic cylinder, wherein hydraulic oil drives a piston in the hydraulic cylinder to reciprocate, and then a piston rod connected with the hydraulic piston type hydrogen compressor pushes the piston in the cylinder to reciprocate, so that hydrogen in the cylinder is compressed. The traditional hydraulic piston type hydrogen compressor consists of a hydraulic cylinder and two cylinders, wherein the hydraulic cylinder is positioned in the middle, and the two cylinders are positioned on two sides of the hydraulic cylinder. The conventional hydraulic piston type hydrogen compressor is suitable for compressing low purity hydrogen. Because of the hydrogen embrittlement of high purity hydrogen, the requirement for the cylinder body material and the piston material of the cylinder is high, resulting in an increase in the manufacturing cost of the conventional hydraulic piston type hydrogen compressor for compressing high purity hydrogen.
In addition, the traditional hydraulic piston type hydrogen compressor lacks detection and protection measures for hydrogen leakage and hydraulic oil leakage. After the hydraulic piston type hydrogen compressor is used for a period of time, the sealing of the sealing part is reduced by less than 100 percent, and the phenomena of oil leakage and air leakage are unavoidable, so that the hydraulic piston type hydrogen compressor is required to be found out and handled in time, otherwise, the working environment is influenced, and even danger occurs.
Disclosure of Invention
In view of the foregoing, it is an object of the present utility model to provide a novel hydraulic piston hydrogen compressor for compressing high purity hydrogen.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: a hydraulic piston type hydrogen compressor consists of a cylinder, a first hydraulic cylinder, a second hydraulic cylinder and a hydraulic driving system;
the cylinder, the first hydraulic cylinder and the second hydraulic cylinder are horizontally and coaxially arranged; the air cylinder is positioned in the middle and is of a double-acting structure; the first hydraulic cylinder and the second hydraulic cylinder are positioned at the left side and the right side of the cylinder and are of a single-action structure;
the cylinder, the first hydraulic cylinder and the second hydraulic cylinder are internally provided with pistons, and the three pistons are fixed on the same piston rod;
the cylinder is provided with a hydrogen gas inlet and a compressed hydrogen gas outlet;
the first hydraulic cylinder and the second hydraulic cylinder are provided with a hydraulic oil inlet and a hydraulic oil outlet, and the hydraulic oil inlet and the hydraulic oil outlet are connected with the hydraulic driving system through pipelines.
Preferably, the cylinder consists of a cylinder sleeve, a left cylinder cover, a right cylinder cover and a piston rod sleeved with a piston; the left cylinder cover and the right cylinder cover are fastened at the end parts of the cylinder sleeve through pull rods and nuts; the two ends of the piston rod respectively penetrate through the left cylinder cover and the right cylinder cover and extend into the first hydraulic cylinder and the second hydraulic cylinder; two-stage sealing rings are arranged between the left cylinder cover, the right cylinder cover and the piston rod; a piston ring is arranged between the piston and the inner wall of the cylinder sleeve; the left cylinder cover is provided with a first hydrogen gas inlet and a first compressed hydrogen gas outlet, and the right cylinder cover is provided with a second hydrogen gas inlet and a second compressed hydrogen gas outlet.
Preferably, the hydraulic piston type hydrogen compressor further comprises a nitrogen seal and a bleeding pipeline system; the nitrogen seal and diffusion pipeline system comprises an exhaust hole, a nitrogen inlet pipe, a manual valve, a one-way valve, a back pressure connecting pipe and a back pressure valve; an exhaust hole is arranged between two stages of sealing rings at the left and right cylinder covers, and the air outlet of the nitrogen hydrogen storage bottle is filled with nitrogen through the nitrogen air inlet pipe, a manual valve and a one-way valve which are connected in series on the nitrogen air inlet pipe; simultaneously, the back pressure connecting pipe is inserted into the exhaust hole, and the back pressure valve is connected in series on the back pressure connecting pipe line; when the hydraulic piston type hydrogen compressor runs, a manual valve on the nitrogen inlet pipe line is in an open state, the nitrogen inlet pipe is connected with low-pressure nitrogen with the pressure of 0.6MPa, and the low-pressure nitrogen enters the exhaust hole through the one-way valve; the pressure set by the back pressure valve is 1.0MPa; when the pressure in the hydrogen leakage hole exceeds 1.0MPa, the back pressure valve is jacked up, and the hydrogen is intensively diffused and discharged through the back pressure connecting pipe and the back pressure valve.
Preferably, the first hydraulic cylinder and the second hydraulic cylinder have the same structure and are symmetrically arranged at two sides of the cylinder; the first hydraulic cylinder and the second hydraulic cylinder are composed of a hydraulic cylinder sleeve, a hydraulic cylinder cover, a hydraulic piston and a travel switch; the hydraulic cylinder sleeve is connected with the cylinder through a pull rod, and the hydraulic cylinder cover is fixedly connected with the end part of the hydraulic cylinder sleeve through a pull rod and a nut; a hydraulic oil inlet and a hydraulic oil outlet are formed in the hydraulic cylinder cover; the travel switch is fixed at the joint of the hydraulic cylinder sleeve and the cylinder; the hydraulic piston in the first hydraulic cylinder divides the cavity of the first hydraulic cylinder into a pressure cavity and a back pressure cavity; the hydraulic piston in the second hydraulic cylinder divides the cavity of the second hydraulic cylinder into a pressure cavity and a back pressure cavity; a piston ring is arranged between the hydraulic piston and the inner wall of the cylinder sleeve of the hydraulic cylinder, and an O-shaped ring is arranged between the inner wall of the hydraulic piston and the piston rod.
Preferably, the hydraulic piston type hydrogen compressor further comprises a hydraulic oil leakage monitoring pipeline system, wherein the hydraulic oil leakage monitoring pipeline system comprises a hydraulic oil leakage detection port, a pipeline, a liquid storage tank and a liquid level detector; the bottoms of the back pressure chambers of the first hydraulic cylinder and the second hydraulic cylinder are respectively provided with a hydraulic oil leakage detection port, the hydraulic oil leakage detection ports are connected with the liquid storage tank through pipelines, and the liquid storage tank is internally provided with the hydraulic detector.
Preferably, the cylinder has an inner diameter larger than the inner diameters of the first and second hydraulic cylinders.
Preferably, the cylinder is of a double cylinder structure, and the inner diameters of the two cylinders are different.
The utility model has the advantages that: the hydraulic oil leakage monitoring pipeline system is low in manufacturing cost, has a double detection protection system, namely a nitrogen seal and diffusion pipeline system and a hydraulic oil leakage monitoring pipeline system, and is safe and reliable to operate.
Drawings
FIG. 1 is a schematic diagram of a hydraulic piston hydrogen compressor according to the present utility model;
FIG. 2 is a schematic diagram of the nitrogen seal and bleed-off piping system and hydraulic oil leakage monitoring piping system according to the present utility model;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present utility model;
FIG. 4 is a schematic diagram of the nitrogen seal and bleed-off piping system and the hydraulic oil leakage monitoring piping system according to embodiment 2 of the present utility model;
FIG. 5 is a schematic structural diagram of embodiment 3 of the present utility model;
the device comprises a 1-cylinder, a 11-cylinder sleeve, a 12-left cylinder cover, a 13-right cylinder cover, a 14-piston, a 15-piston rod, a 16-pull rod, a nut, a 17-sealing ring and a 18-piston ring, wherein the cylinder is arranged in the cylinder; the hydraulic cylinder comprises a first hydraulic cylinder, a 21-hydraulic cylinder sleeve, a 22-hydraulic cylinder cover, a 23-hydraulic piston, a 24-travel switch, a 25-pull rod, a nut, a 26-screw, a 27-piston ring and a 28-O-shaped ring; 3-a second hydraulic cylinder; 41-air inlet pipelines, 42-air inlet check valves, 43-pressure transmitters, 44-air inlet pressure gauges, 45-air outlets of the hydrogen storage tanks, 46-air outlet pipelines, 47-air outlet check valves, 48-gas heat exchangers, 49-pressure transmitters, 410-air outlet pressure gauges and 411-air inlets of the other hydrogen storage tanks; 51-hydraulic oil tank, 52-oil pump, 53-reversing valve group and 54-high-pressure oil pipe; 61-a nitrogen inlet pipe, 62-a manual valve, 63-a one-way valve, 64-a back pressure connecting pipe, 65-a back pressure valve and 66-a flowmeter; 71-pipeline, 72-liquid storage tank, 73-liquid level detector, 74-flowmeter; a C1-left cylinder cavity, a C2-right cylinder cavity, a C3-hydraulic cylinder pressure cavity and a C4-hydraulic cylinder back pressure cavity; the device comprises a P1-first hydrogen gas inlet, a P2-second hydrogen gas inlet, a P3-first compressed hydrogen gas outlet, a P4-second compressed hydrogen gas outlet, a P5-first hydraulic oil inlet and outlet, a P6-second hydraulic oil inlet and outlet, a P7-first exhaust hole, a P8-second exhaust hole and a P9-hydraulic oil leakage detection port.
Detailed Description
The structure and features of the present utility model will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and thus, the embodiments disclosed in the specification should not be taken as limiting the utility model, but merely as exemplifications of embodiments, which are intended to make the features of the utility model apparent.
As shown in fig. 1, the hydraulic piston type hydrogen compressor disclosed by the utility model is composed of a cylinder 1, a first hydraulic cylinder 2, a second hydraulic cylinder 3, a hydrogen inlet pipeline, a hydrogen exhaust pipeline and a hydraulic driving system. The cylinder 1, the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are horizontally and coaxially arranged; the air cylinder 1 is positioned in the middle and is of a double-acting structure; the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are positioned at the left side and the right side of the cylinder 1 and are of a single-action structure.
The cylinder 1 is composed of a cylinder liner 11, a left cylinder head 12, a right cylinder head 13, and a piston rod 15 fitted with a piston 14. The left and right cylinder heads 12 and 13 are fastened to the ends of the cylinder liner 11 by tie rods and nuts 16. The two ends of the piston rod 15 respectively penetrate through the left cylinder cover and the right cylinder cover and extend into the first hydraulic cylinder 2 and the second hydraulic cylinder 3. A two-stage sealing ring 17 is arranged between the cylinder cover and the piston rod and is used for sealing the hydrogen in the cylinder to prevent the hydrogen from leaking. The piston 14 is positioned in the middle of the piston rod 15, and the piston 14 and the piston rod 15 can be of an integrated structure or an assembled structure; a piston ring 18 is provided between the piston 14 and the inner wall of the cylinder liner 11. The piston 14 reciprocates in the cylinder 1 under the drive of the piston rod 15, compressing the hydrogen gas in the cylinder.
The piston 14 divides the chamber of the cylinder 1 into a left cylinder chamber C1 and a right cylinder chamber C2. The left cylinder cover 12 is provided with a first hydrogen gas inlet P1 and a first compressed hydrogen gas outlet P3, and the right cylinder cover 13 is provided with a second hydrogen gas inlet P2 and a second compressed hydrogen gas outlet P4.
The first hydrogen gas inlet P1 and the second hydrogen gas inlet P2 are connected with an air outlet 45 of a hydrogen gas storage tank through an air inlet pipeline 41, an air inlet one-way valve 42, a pressure transmitter 43 and an air inlet pressure gauge 44 which are connected in series in the air inlet pipeline. The first compressed hydrogen outlet P3 and the second compressed hydrogen outlet P4 are connected in series with a gas outlet check valve 47, a gas heat exchanger 48, a pressure transmitter 49 and a gas outlet pressure gauge 410 in the gas outlet pipeline through a gas outlet pipeline 46, and are connected with a gas inlet 411 of another hydrogen gas storage tank. The normal hydrogen enters the left cylinder cavity C1 and the right cylinder cavity C2 of the cylinder through the first hydrogen gas inlet P1 and the second hydrogen gas inlet P2, and is discharged from the first compressed hydrogen gas outlet P3 and the second compressed hydrogen gas outlet P4 through compression of the piston 14.
In the preferred embodiment of the present utility model, the intake check valve 42 and the exhaust check valve 47 are cartridge valves, and are directly installed in the left cylinder head 12 and the right cylinder head 13.
The first hydraulic cylinder 2 and the second hydraulic cylinder 3 have the same structure and the same size and are symmetrically arranged on two sides of the cylinder 1. The first hydraulic cylinder 2 and the second hydraulic cylinder 3 are composed of a hydraulic cylinder sleeve 21, a hydraulic cylinder cover 22, a hydraulic piston 23 and a travel switch 24. The hydraulic cylinder cover 22 is fixedly connected with the end part of the hydraulic cylinder sleeve 21 through a pull rod 25 and a nut, and the hydraulic cylinder sleeve 21 is connected with the cover 12 of the cylinder 1 through the pull rod 25, so that the hydraulic cylinder sleeve 21 is pressed tightly to form the whole compression cylinder. The piston rod 15 is inserted into the cylinder sleeve 21 of the hydraulic cylinder, and the hydraulic piston 23 is fastened to the end of the piston rod 15 by means of screws 26. And a travel switch 24 is arranged at the joint of the cylinder sleeve 21 of the hydraulic cylinder and the cylinder 1, when the hydraulic piston 23 moves to the tail part of the hydraulic cylinder, the travel switch 24 is triggered, a travel switch transmits a signal to a reversing valve group 53 in a hydraulic driving system, the reversing valve group 53 reverses, the first hydraulic cylinder 2 stops working, and the second hydraulic cylinder 3 starts working.
In the preferred embodiment of the utility model, the root of the tie rod 25, which secures the cylinder head 21, is screwed onto the cylinder head 12, compressing the cylinder head and the cylinder liner by tightening the nuts.
The hydraulic piston 23 in the first hydraulic cylinder 2 divides the chamber of the first hydraulic cylinder into a pressure chamber C3 and a back pressure chamber C4; similarly, the hydraulic piston 23 in the second hydraulic cylinder 3 divides the chamber of the second hydraulic cylinder into a pressure chamber C3 and a back pressure chamber C4.
In order to prevent high-pressure hydraulic oil in a pressure cavity C3 of a hydraulic cylinder from penetrating into a back pressure cavity C4, a piston ring 27 is arranged between a hydraulic piston 23 and the inner wall of a cylinder sleeve 21 of the hydraulic cylinder, and an O-shaped ring 28 is arranged between the inner wall of the hydraulic piston 23 and a piston rod 15.
The cylinder cover of the first hydraulic cylinder 2 is provided with a first hydraulic oil inlet and outlet P5, and the cylinder cover of the second hydraulic cylinder 3 is provided with a second hydraulic oil inlet and outlet P6. The hydraulic drive system comprises a hydraulic oil tank 51, an oil pump 52, a reversing valve group 53 and a high-pressure oil pipe 54. The first and second hydraulic oil inlets and outlets P5 and P6 are connected with a hydraulic oil tank 51 through a high-pressure oil pipe 54, a reversing valve group 53 and an oil pump 52; hydraulic oil in the hydraulic oil tank 51 enters the first hydraulic cylinder and the second hydraulic cylinder under the driving of the oil pump 52 to push the hydraulic piston 23 to reciprocate in the first hydraulic cylinder and the second hydraulic cylinder, and then the piston 14 in the cylinder 1 is driven by the piston rod 15 to reciprocate to compress hydrogen in the cylinder 1.
As shown in fig. 1, the working principle of the utility model is as follows: hydrogen enters the left cylinder cavity C1 and the right cylinder cavity C2 of the cylinder 1 through the air inlet pipeline 41, the pressure transmitter 43, the air inlet one-way valve 42, the first hydrogen air inlet P1 and the second hydrogen air inlet P2; the oil pump 52 sucks out hydraulic oil from the hydraulic oil tank 51, pushes the hydraulic oil into the pressure cavity C3 of the first hydraulic cylinder 2 through the reversing valve group 53, the high-pressure oil pipe 54 and the first hydraulic oil inlet and outlet P5, and pushes the hydraulic piston 23, the piston rod 15 and the piston 14 in the first hydraulic cylinder 2 to move rightwards; in the process of rightward movement of the hydraulic piston 23, the piston rod 15 and the piston 14, the volume of the left cylinder cavity C1 of the cylinder 1 increases, the volume of the right cylinder cavity C2 becomes smaller, hydrogen in the right cylinder cavity is compressed, and the compressed hydrogen is discharged through the second compressed hydrogen outlet P4, the exhaust check valve 47, the gas heat exchanger 48 and the pressure transmitter 49; when the hydraulic piston 23 in the first hydraulic cylinder moves until the tail of the cylinder touches the travel switch 24, the travel switch 24 outputs a signal to enable the reversing valve group 53 of the hydraulic drive system to reverse, hydraulic oil is pushed into the pressure cavity C3 of the second hydraulic cylinder 3 through the high-pressure oil pipe 54 and the second hydraulic oil inlet and outlet P6, and the hydraulic piston 23, the piston rod 15 and the piston 14 in the second hydraulic cylinder 3 are pushed to move leftwards; in the process of moving the hydraulic piston 23, the piston rod 15 and the piston 14 leftwards, the volume of the right cylinder cavity C2 of the cylinder 1 is increased, the volume of the left cylinder cavity C1 is reduced, hydrogen in the left cylinder cavity is compressed, and the compressed hydrogen is discharged through the first compressed hydrogen outlet P3, the exhaust check valve 47, the gas heat exchanger 48 and the pressure transmitter 49; when the hydraulic piston 23 in the second hydraulic cylinder 3 moves to the position that the tail of the cylinder touches the travel switch 24, the travel switch 24 outputs a signal to enable the reversing valve group 53 of the hydraulic drive system to reverse again, hydraulic oil is pushed into the pressure cavity C3 of the first hydraulic cylinder 2 through the high-pressure oil pipe 54 and the first hydraulic oil inlet and outlet P5 to push the hydraulic piston 23, the piston rod 15 and the piston 14 in the first hydraulic cylinder 2 to move rightwards, and hydrogen in the right cylinder cavity C2 of the compression cylinder 1 is compressed, and the compressed hydrogen is discharged through the second compressed hydrogen outlet P4, the exhaust check valve 47, the gas heat exchanger 48 and the pressure transmitter 49; … …; the hydraulic pistons 23, the piston rods 15 and the pistons 14 in the first hydraulic cylinder and the second hydraulic cylinder move left and right repeatedly in this way, and the hydrogen in the left cylinder cavity and the right cylinder cavity of the air cylinder 1 is compressed, so that continuous compression of the hydrogen is realized.
In order to realize the compression of high-purity hydrogen, the cylinder 1 is arranged in the middle, the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are arranged on two sides of the cylinder, and the piston in the cylinder is pushed to reciprocate at a low speed by the reciprocating motion of the piston in the first hydraulic cylinder and the piston in the second hydraulic cylinder, so that the compression of the high-purity hydrogen is realized.
In addition, the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are completely isolated from the cylinder 1, so that hydraulic oil cannot pollute the hydrogen in the cylinder, and the cleaning of the hydrogen in the cylinder is ensured.
In order to prevent the explosion of the mixture of the hydrogen leakage and the air in the cylinder after the abrasion of the sealing rings 17 between the cylinder heads and the piston rods at the two ends of the cylinder 1, the utility model is also provided with a nitrogen seal and a bleeding pipeline system. As shown in fig. 2, the nitrogen seal and bleed line system includes a first bleed hole P7, a second bleed hole P8, a nitrogen inlet pipe 61, a manual valve 62, a check valve 63, a back pressure connection pipe 64, a back pressure valve 65, and a flow meter 66. A first exhaust hole P7 is formed between two stages of sealing rings 17 of the left cylinder cover 12, a second exhaust hole P8 is formed between two stages of sealing rings 17 of the right cylinder cover 13, and the first exhaust hole P7 and the second exhaust hole P8 are directly abutted against a piston rod from the surface of the cylinder cover to perforate. The gas outlet of the nitrogen hydrogen storage bottle is filled with nitrogen through a nitrogen gas inlet pipe 61, a manual valve 62 and a one-way valve 63 which are connected in series on the gas inlet pipe, and a first gas outlet hole P7 and a second gas outlet hole P8; meanwhile, a back pressure connection pipe 64 is inserted into the first and second exhaust holes P7 and P8, and a back pressure valve 65 and a flowmeter 66 are connected in series to the back pressure connection pipe.
When the hydraulic piston type hydrogen compressor operates, a manual valve 62 on a nitrogen inlet pipe line is in an open state, a nitrogen inlet pipe 61 is connected with low-pressure nitrogen with the pressure of 0.6MPa, the low-pressure nitrogen enters a first exhaust hole P7 and a second exhaust hole P8 through a one-way valve 63, and the first exhaust hole P7 and the second exhaust hole P8 are filled with nitrogen; the check valve 63 effectively prevents high pressure hydrogen gas that may leak from entering the low pressure nitrogen supply to avoid a hazardous event. Meanwhile, a back pressure connection pipe 64 is inserted into the first and second exhaust holes P7 and P8, and the back pressure connection pipe 64 is connected to a back pressure valve 65. The set pressure of the back pressure valve 65 is 1.0MPa. If the leakage of hydrogen gas occurs due to abrasion of the cylinder head seal 17, when the leakage pressure exceeds 1.0MPa, the back pressure valve 65 is opened, and the hydrogen gas is concentrated and diffused through the back pressure connection pipe 64 and the back pressure valve 65. The flow meter 66 connected in series with the back pressure connecting pipe 64 can detect the leakage amount of the air cylinder in real time, and determine whether the air cylinder needs to be maintained and the sealing ring 17 needs to be replaced according to the leakage amount.
Considering that the hydraulic piston rings in the first and second hydraulic cylinders may leak oil due to long-term use, the present utility model further includes a hydraulic oil leakage monitoring piping system including a hydraulic oil leakage detection port P9, a piping 71, a liquid storage tank 72, a liquid level detector 73, and a flow meter 74, as shown in fig. 2. The bottoms of the first and second hydraulic cylinder back pressure chambers C4 are respectively provided with a hydraulic oil leakage detection port P9, the hydraulic oil leakage detection port P9 is connected with a liquid storage tank 72 through a pipeline 71, a hydraulic detector 73 is arranged in the liquid storage tank to detect the height of liquid in the storage tank, and a flowmeter 74 is also connected in series in the pipeline 71. If the leakage phenomenon occurs in the hydraulic piston ring in the hydraulic cylinder, high-pressure hydraulic oil in the pressure cavity C3 of the hydraulic cylinder enters the back pressure cavity C4 and flows into the liquid storage tank 72 through the hydraulic oil leakage detection port P9 and the pipeline 71, and after the detection of the liquid level detector 73 in the liquid storage tank 72, the alarm is immediately given to remind of replacing the hydraulic piston ring.
The cylinder 1 of the utility model can have various forms, as shown in figure 1, the cylinder 1 is a single cylinder, as shown in figure 3, the cylinder 1 can be designed into a double cylinder, and the displacement is doubled relative to the single cylinder under the same reversing frequency. As shown in fig. 3 and 4, when the cylinder 1 is designed to be a double cylinder type, two hydrogen gas inlets and two gas outlets, and a nitrogen seal exhaust hole and a bleeding pipeline are required to be opened on a cylinder head between two cylinders.
As shown in fig. 5, when the cylinder 1 has a double-cylinder structure, the two cylinders can be designed into cylinders with different diameters, so as to realize multi-stage compression.
Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. A hydraulic piston hydrogen compressor, characterized by: the hydraulic system consists of an air cylinder, a first hydraulic cylinder, a second hydraulic cylinder and a hydraulic driving system;
the cylinder, the first hydraulic cylinder and the second hydraulic cylinder are horizontally and coaxially arranged; the air cylinder is positioned in the middle and is of a double-acting structure; the first hydraulic cylinder and the second hydraulic cylinder are positioned at the left side and the right side of the cylinder and are of a single-action structure;
the cylinder, the first hydraulic cylinder and the second hydraulic cylinder are internally provided with pistons, and the three pistons are fixed on the same piston rod;
the cylinder is provided with a hydrogen gas inlet and a compressed hydrogen gas outlet;
the first hydraulic cylinder and the second hydraulic cylinder are provided with a hydraulic oil inlet and a hydraulic oil outlet, and the hydraulic oil inlet and the hydraulic oil outlet are connected with the hydraulic driving system through pipelines.
2. The hydraulic piston hydrogen compressor of claim 1 wherein: the cylinder consists of a cylinder sleeve, a left cylinder cover, a right cylinder cover and a piston rod sleeved with a piston;
the left cylinder cover and the right cylinder cover are fastened at the end parts of the cylinder sleeve through pull rods and nuts;
the two ends of the piston rod respectively penetrate through the left cylinder cover and the right cylinder cover and extend into the first hydraulic cylinder and the second hydraulic cylinder;
two-stage sealing rings are arranged between the left cylinder cover, the right cylinder cover and the piston rod;
a piston ring is arranged between the piston and the inner wall of the cylinder sleeve;
the left cylinder cover is provided with a first hydrogen gas inlet and a first compressed hydrogen gas outlet, and the right cylinder cover is provided with a second hydrogen gas inlet and a second compressed hydrogen gas outlet.
3. The hydraulic piston hydrogen compressor of claim 2 wherein: the system also comprises a nitrogen seal and a bleeding pipeline system; the nitrogen seal and diffusion pipeline system comprises an exhaust hole, a nitrogen inlet pipe, a manual valve, a one-way valve, a back pressure connecting pipe and a back pressure valve;
an exhaust hole is arranged between two stages of sealing rings at the left and right cylinder covers, and the air outlet of the nitrogen hydrogen storage bottle is filled with nitrogen through the nitrogen air inlet pipe, a manual valve and a one-way valve which are connected in series on the nitrogen air inlet pipe; simultaneously, the back pressure connecting pipe is inserted into the exhaust hole, and the back pressure valve is connected in series on the back pressure connecting pipe line;
when the hydraulic piston type hydrogen compressor runs, a manual valve on the nitrogen inlet pipe line is in an open state, the nitrogen inlet pipe is connected with low-pressure nitrogen with the pressure of 0.6MPa, and the low-pressure nitrogen enters the exhaust hole through the one-way valve; the pressure set by the back pressure valve is 1.0MPa; when the pressure in the hydrogen leakage hole exceeds 1.0MPa, the back pressure valve is jacked up, and the hydrogen is intensively diffused and discharged through the back pressure connecting pipe and the back pressure valve.
4. A hydraulic piston hydrogen compressor according to any one of claims 1-3, wherein: the first hydraulic cylinder and the second hydraulic cylinder have the same structure and are symmetrically arranged at two sides of the cylinder;
the first hydraulic cylinder and the second hydraulic cylinder are composed of a hydraulic cylinder sleeve, a hydraulic cylinder cover, a hydraulic piston and a travel switch;
the hydraulic cylinder sleeve is connected with the cylinder through a pull rod, and the hydraulic cylinder cover is fixedly connected with the end part of the hydraulic cylinder sleeve through a pull rod and a nut; a hydraulic oil inlet and a hydraulic oil outlet are formed in the hydraulic cylinder cover;
the travel switch is fixed at the joint of the hydraulic cylinder sleeve and the cylinder;
the hydraulic piston in the first hydraulic cylinder divides the cavity of the first hydraulic cylinder into a pressure cavity and a back pressure cavity; the hydraulic piston in the second hydraulic cylinder divides the cavity of the second hydraulic cylinder into a pressure cavity and a back pressure cavity;
a piston ring is arranged between the hydraulic piston and the inner wall of the cylinder sleeve of the hydraulic cylinder, and an O-shaped ring is arranged between the inner wall of the hydraulic piston and the piston rod.
5. The hydraulic piston hydrogen compressor of claim 4 wherein: the hydraulic oil leakage monitoring pipeline system comprises a hydraulic oil leakage detection port, a pipeline, a liquid storage tank and a liquid level detector;
the bottoms of the back pressure chambers of the first hydraulic cylinder and the second hydraulic cylinder are respectively provided with a hydraulic oil leakage detection port, the hydraulic oil leakage detection ports are connected with the liquid storage tank through the pipelines, and the liquid level detector is arranged in the liquid storage tank.
6. The hydraulic piston hydrogen compressor of claim 5 wherein: the inner diameter of the air cylinder is larger than that of the first hydraulic cylinder and the second hydraulic cylinder.
7. The hydraulic piston hydrogen compressor of claim 6 wherein: the cylinder is of a double-cylinder structure.
8. The hydraulic piston hydrogen compressor of claim 7 wherein: the two cylinders have different inner diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320900163.XU CN219953583U (en) | 2023-04-20 | 2023-04-20 | Hydraulic piston type hydrogen compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320900163.XU CN219953583U (en) | 2023-04-20 | 2023-04-20 | Hydraulic piston type hydrogen compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953583U true CN219953583U (en) | 2023-11-03 |
Family
ID=88554837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320900163.XU Active CN219953583U (en) | 2023-04-20 | 2023-04-20 | Hydraulic piston type hydrogen compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953583U (en) |
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2023
- 2023-04-20 CN CN202320900163.XU patent/CN219953583U/en active Active
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