CN220909920U - Liquid-driven low Wen Zhusai pump - Google Patents
Liquid-driven low Wen Zhusai pump Download PDFInfo
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- CN220909920U CN220909920U CN202322706385.0U CN202322706385U CN220909920U CN 220909920 U CN220909920 U CN 220909920U CN 202322706385 U CN202322706385 U CN 202322706385U CN 220909920 U CN220909920 U CN 220909920U
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- sleeve
- liquid drive
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- 239000007788 liquid Substances 0.000 title claims abstract description 129
- 239000001257 hydrogen Substances 0.000 claims abstract description 33
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000004321 preservation Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 10
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Compressor (AREA)
Abstract
The utility model relates to the technical field of liquid hydrogen filling, in particular to a liquid-driven low-temperature plunger pump. Including low Wen Zhusai pump, low temperature plunger pump includes the pump body, be equipped with the piston in the pump body, the piston rod of piston is connected with liquid drive mechanism, liquid drive mechanism includes the connector with pump body fixed connection, the internal activity of connector is equipped with liquid drive piston rod, the one end and the piston rod fixed connection of liquid drive piston rod, connector and liquid drive piston fixed connection are worn out to the other end, liquid drive piston movable mounting is in liquid drive casing, liquid drive casing and connector fixed connection, the both sides that lie in liquid drive piston in the liquid drive casing are equipped with hydraulic chamber A and hydraulic chamber B respectively, hydraulic chamber A's lateral wall is equipped with hydraulic oil access A, hydraulic chamber B's lateral wall is equipped with hydraulic oil access B. The liquid drive form is more stable and reliable, solves the defects of easy shaking and poor stability of the traditional connecting rod mechanism, avoids the deformation and abrasion of the piston of the low Wen Zhusai pump, prolongs the service life and improves the tightness between the piston and the pump body.
Description
Technical field:
the utility model relates to the technical field of liquid hydrogen filling, in particular to a liquid-driven low-temperature plunger pump.
The background technology is as follows:
At present, with the wide application of liquid hydrogen energy sources, liquid hydrogen filling is more and more important. Liquid hydrogen is a low temperature liquid fuel, its temperature can be as low as-200 ℃ to-250 ℃, and its boiling point is very low, and it is very easy to vaporize. In the filling process through the liquid hydrogen pump, on the one hand, the existing low Wen Zhusai pump, the driving mechanism of which generally adopts a crankshaft connecting rod mechanism, is easy to shake during use, so that the use stability is poor, and further the problems of piston ring deformation, piston ring abrasion, poor tightness between a piston and a cylinder body and the like are easy to occur, and the service life of the pump is reduced. On the other hand, the crankshaft connecting rod mechanism is driven by a motor, the equipment has hard requirements on space, and meanwhile, the whole equipment has higher material and manufacturing cost. In the third aspect, the liquid hydrogen needs to be filtered before entering the liquid hydrogen pump, and then enters the liquid hydrogen pump for pressurization, and when in filtration, the liquid hydrogen is easily vaporized under the influence of the external environment due to the fact that the temperature of the liquid hydrogen is greatly different from the external temperature; meanwhile, in the pressurizing process in the pump body, liquid hydrogen is easy to be vaporized in the pump body due to heat transfer between the pump body and the outside, so that the liquid hydrogen is lost, and the compression efficiency is reduced.
In view of the above, the problem of low Wen Zhusai pump has become a technical problem to be solved in industry.
The utility model comprises the following steps:
The utility model provides a hydraulic low Wen Zhusai pump for overcoming the defects of the prior art, and solves the problems that a driving connecting rod mechanism of the conventional low-temperature plunger pump is easy to shake, poor in stability and reduced in service life of a piston.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
The utility model provides a liquid drives low Wen Zhusai pump, includes low Wen Zhusai pump, low temperature plunger pump includes the pump body, is equipped with the compression chamber in the pump body, is equipped with the piston in the compression chamber, and the piston rod of piston wears out the pump body and is connected with liquid driving mechanism, liquid driving mechanism includes the connector with pump body fixed connection, and the internal activity of connecting is equipped with liquid driving piston rod, and the one end and the piston rod fixed connection of liquid driving piston rod, the connector and liquid driving piston fixed connection are worn out to the other end, and liquid driving piston movable mounting is in liquid driving casing, and liquid driving casing and connector fixed connection are equipped with hydraulic chamber A and hydraulic chamber B respectively to the both sides that lie in liquid driving piston in the liquid driving casing, and hydraulic chamber A's lateral wall is equipped with hydraulic oil access A, and hydraulic chamber B's lateral wall is equipped with hydraulic oil access B.
And a guide sealing assembly A is arranged between the liquid drive piston and the liquid drive shell.
And a guide sealing component B is arranged between the liquid drive piston rod and the connecting body.
A leakage collecting cavity is arranged between the inner wall of the connecting body and the liquid drive piston rod, and a purging inlet and a purging outlet are arranged on the side wall of the leakage collecting cavity.
The liquid drive piston rod is fixedly connected with the piston rod through threads.
The front end of the pump body is provided with a liquid inlet, a liquid inlet valve is arranged in the liquid inlet, one side of the pump body is provided with a liquid outlet, a porous channel is arranged in the liquid outlet, a truncated cone-shaped filter is arranged at the front end of the pump body, a precooling sleeve is arranged at the outer side of the truncated cone-shaped filter, one end of the precooling sleeve is fixedly connected with the pump body, a liquid hydrogen inlet is arranged at the other end of the precooling sleeve, an exhaust port is arranged at the upper part of one side of the precooling sleeve, a first heat-preserving sleeve fixedly connected with the pump body is arranged at the outer side of the precooling sleeve, a heat-preserving layer is arranged at the outer side of the first heat-preserving sleeve at intervals, a second heat-preserving sleeve is arranged at the outer side of the pump body corresponding to the position of a compression cavity, a third heat-preserving sleeve is arranged at the outer side of the pump body corresponding to the position of the compression cavity and the truncated cone-shaped filter at intervals of the second heat-preserving sleeve, and the third heat-preserving sleeve is arranged at the interval with the second heat-preserving sleeve.
The first support flange is installed in the outside of first heat preservation telescopic, and the outside of the pump body is equipped with the second support flange, and second heat preservation telescopic fixed mounting is between the top of second support flange and the bottom of first support flange.
The outside of the pump body is provided with a third support flange, and a third heat preservation sleeve is fixedly arranged between the top of the third support flange and the top of the first support flange.
The utility model adopts the scheme and has the following advantages:
Through alternately injecting hydraulic oil in hydraulic pressure chamber A and hydraulic pressure chamber B, drive liquid through hydraulic oil and drive piston reciprocating motion in the liquid drive casing, liquid drives piston rod and the piston motion of piston rethread liquid drive piston rod drive low Wen Zhusai pump, liquid drive form more reliable and stable, solved the easy drawback of rocking, poor stability of former link mechanism, avoided the piston deformation, the wearing and tearing of low Wen Zhusai pump, prolonged life, improved the leakproofness between piston and the pump body simultaneously. The hydraulic unit can be flexibly arranged, occupies small space and has low overall cost, and the device can be used for pressurizing low-temperature fluid such as liquid hydrogen, liquid oxygen, liquid nitrogen and the like.
The precooling sleeve is arranged on the outer side of the truncated cone-shaped filter, the first heat preservation sleeve is arranged on the outer side of the precooling sleeve, the heat preservation layer is arranged on the outer side of the first heat preservation sleeve, the heat preservation effect is good, the filtered liquid hydrogen can be insulated, and vaporization caused by the influence of external environment during liquid hydrogen filtration is avoided; through setting up second heat preservation sleeve and third heat preservation sleeve in the pump body outside, can keep warm thermal-insulated to the compression chamber in the pump body, avoid liquid hydrogen to take place the vaporization when the pressurization, avoided liquid hydrogen loss, promoted compression efficiency.
Description of the drawings:
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged schematic view of the hydraulic driving mechanism of the present utility model.
Fig. 3 is an enlarged schematic view of the structure of the cryogenic plunger pump of the present utility model.
In the figure, 1, a pump body, 2, a piston, 3, a piston rod, 4, a liquid inlet valve, 5, a porous channel, 6, a truncated cone-shaped filter, 7, a pre-cooling sleeve, 8, a liquid hydrogen inlet, 9, an exhaust port, 10, a first heat-preserving sleeve, 11, a heat-preserving layer, 12, a second heat-preserving sleeve, 13, a third heat-preserving sleeve, 14, a first support flange, 15, a second support flange, 16, a third support flange, 17, a connector, 18, a liquid drive piston rod, 19, a liquid drive piston, 20, a liquid drive shell, 21, a hydraulic cavity A,22, a hydraulic cavity B,23, a hydraulic oil inlet and outlet A,24, a hydraulic oil inlet and outlet B,25, a guide sealing assembly A,26, a guide sealing assembly B,27, a leakage collecting cavity, 28, a purging inlet, 29 and a purging outlet.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-3, a hydraulic low Wen Zhusai pump comprises a low Wen Zhusai pump, the low-temperature plunger pump comprises a pump body 1, a compression cavity is arranged in the pump body 1, a piston 2 is arranged in the compression cavity, a piston rod 3 of the piston 2 penetrates out of the pump body 1 to be connected with a hydraulic driving mechanism, the hydraulic driving mechanism comprises a connecting body 17 fixedly connected with the pump body 1, a hydraulic driving piston rod 18 is movably arranged in the connecting body 17, one end of the hydraulic driving piston rod 18 is fixedly connected with the piston rod 3, the other end penetrates out of the connecting body 17 to be fixedly connected with a hydraulic driving piston 19, the hydraulic driving piston 19 is movably arranged in a hydraulic driving shell 20, the hydraulic driving shell 20 is fixedly connected with the connecting body 17, two sides, located in the hydraulic driving piston 19, of the hydraulic driving shell 20 are respectively provided with a hydraulic cavity a21 and a hydraulic cavity B22, the side wall of the hydraulic cavity a21 is provided with a hydraulic oil inlet and outlet a23, and the side wall of the hydraulic cavity B22 is provided with a hydraulic oil inlet and a hydraulic oil outlet B24.
A guiding sealing component A25 is arranged between the liquid driving piston 19 and the liquid driving shell 20, and a guiding sealing component B26 is arranged between the liquid driving piston rod 18 and the connecting body 17. The guiding sealing assembly a25 and the guiding sealing assembly B26 comprise guiding rings and sealing rings for guiding the movement of the liquid driving piston 19 and the liquid driving piston rod 18 on the one hand and for sealing between the liquid driving piston 19 and the liquid driving housing 20 and between the liquid driving piston rod 18 and the connecting body 17 on the other hand.
A leakage collecting cavity 27 is arranged between the inner wall of the connecting body 17 and the liquid drive piston rod 18, and a purging inlet 28 and a purging outlet 29 are arranged on the side wall of the leakage collecting cavity 27. When the hydraulic oil in the hydraulic drive shell 20 leaks towards the direction of the low-temperature plunger pump, the leakage collecting cavity 27 can store the leaked hydraulic oil, the hydraulic oil is prevented from leaking into the low-temperature plunger pump, the leakage collecting cavity 27 is periodically purged with gas through the purging inlet 28, and the hydraulic oil in the leakage collecting cavity 27 can be discharged outwards from the purging outlet 29.
The hydraulic piston rod 18 is fixedly connected with the piston rod 3 through threads.
The front end of the pump body 1 is provided with a liquid inlet, a liquid inlet valve 4 is arranged in the liquid inlet, one side of the pump body 1 is provided with a liquid outlet, a porous channel 5 is arranged in the liquid outlet, a truncated cone-shaped filter 6 is arranged at the front end of the pump body 1, a precooling sleeve 7 is arranged at the outer side of the truncated cone-shaped filter 6, one end of the precooling sleeve 7 is fixedly connected with the pump body 1, a liquid hydrogen inlet 8 is arranged at the other end of the precooling sleeve 7, an exhaust port 9 is arranged at the upper part of one side of the precooling sleeve 7, a first heat-preserving sleeve 10 fixedly connected with the pump body 1 is arranged at the outer side of the precooling sleeve 7, a heat-preserving sleeve 10 is arranged at intervals with the first heat-preserving sleeve 10, a heat-preserving layer 11 is arranged at the outer side of the first heat-preserving sleeve 10, a second heat-preserving sleeve 12 is arranged at intervals with the pump body 1 at the position corresponding to a compression cavity, a third heat-preserving sleeve 13 is arranged at the outer side of the pump body 1 corresponding to the position of the compression cavity and the truncated cone-shaped filter, and the third heat-preserving sleeve 13 is arranged at intervals with the second heat-preserving sleeve 12.
The first support flange 14 is installed on the outer side of the first heat preservation sleeve 10, the second support flange 15 is arranged on the outer side of the pump body 1, and the second heat preservation sleeve 12 is fixedly installed between the top of the second support flange 15 and the bottom of the first support flange 14.
The outside of the pump body 1 is provided with a third support flange 16, and a third heat preservation sleeve 13 is fixedly arranged between the top of the third support flange 16 and the top of the first support flange 14.
The working principle of the liquid driving mechanism is as follows:
During operation, hydraulic oil in the hydraulic cavity A21 is injected and discharged through the hydraulic oil inlet and outlet A23, hydraulic oil in the hydraulic cavity B22 is injected and discharged through the hydraulic oil inlet and outlet B24, when the hydraulic oil is injected into the hydraulic cavity A21, the hydraulic oil is discharged from the hydraulic cavity B22, at the moment, the pressure in the hydraulic cavity A21 is larger than the pressure in the hydraulic cavity B22, and the hydraulic oil pushes the liquid driving piston 19 to move rightwards; conversely, when the hydraulic pressure chamber B22 is filled with hydraulic oil, the hydraulic pressure chamber a21 discharges hydraulic oil, and at this time, the pressure in the hydraulic pressure chamber a21 is smaller than the pressure in the hydraulic pressure chamber B22, and the hydraulic oil pushes the hydraulic piston 19 to move leftward. Therefore, the hydraulic oil drives the liquid drive piston 19 to reciprocate in the liquid drive shell 20, the liquid drive piston 19 drives the piston rod 3 and the piston 2 of the low Wen Zhusai pump to reciprocate through the liquid drive piston rod 18, and the liquid drive form is more stable and reliable.
Low Wen Zhusai pump principle of operation:
During operation, under the reciprocating motion effect of the piston 2, liquid hydrogen enters the precooling sleeve 7 from the liquid hydrogen inlet 8, the liquid hydrogen is filtered through the flat-head conical filter 6, the first heat preservation sleeve 10 and the heat preservation layer 11 can avoid heat exchange between the precooling sleeve 7 and the outside, the filtered liquid hydrogen is insulated and preserved, vaporization caused by the influence of the outside environment during liquid hydrogen filtration is avoided, and even if a small part of liquid hydrogen is vaporized, the liquid hydrogen can be discharged outwards from the exhaust port 9; the filtered liquid hydrogen enters the compression cavity to be pressurized, the second heat preservation sleeve 12 and the third heat preservation sleeve 13 are arranged to preserve heat and insulate heat of the compression cavity in the pump body 1, vaporization of the liquid hydrogen during pressurization is avoided, liquid hydrogen loss is avoided, compression efficiency is improved, and the pressurized liquid hydrogen is discharged outwards through the porous channels 5.
The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (8)
1.A liquid-driven low Wen Zhusai pump, characterized in that: including low Wen Zhusai pump, low temperature plunger pump includes the pump body, is equipped with the compression chamber in the pump body, is equipped with the piston in the compression chamber, and the piston rod of piston wears out the pump body and is connected with liquid drive mechanism, liquid drive mechanism includes the connector with pump body fixed connection, and the internal activity of connecting is equipped with liquid drive piston rod, and the one end and the piston rod fixed connection of liquid drive piston rod, the other end wear out connector and liquid drive piston fixed connection, liquid drive piston movable mounting in the liquid drive casing, liquid drive casing and connector fixed connection, the both sides that lie in liquid drive piston in the liquid drive casing are equipped with hydraulic chamber A and hydraulic chamber B respectively, and hydraulic chamber A's lateral wall is equipped with hydraulic oil access A, and hydraulic chamber B's lateral wall is equipped with hydraulic oil access B.
2. A liquid-driven low Wen Zhusai pump according to claim 1, wherein: and a guide sealing assembly A is arranged between the liquid drive piston and the liquid drive shell.
3. A liquid-driven low Wen Zhusai pump according to claim 1, wherein: and a guide sealing component B is arranged between the liquid drive piston rod and the connecting body.
4. A liquid-driven low Wen Zhusai pump according to claim 1, wherein: a leakage collecting cavity is arranged between the inner wall of the connecting body and the liquid drive piston rod, and a purging inlet and a purging outlet are arranged on the side wall of the leakage collecting cavity.
5. A liquid-driven low Wen Zhusai pump according to claim 1, wherein: the liquid drive piston rod is fixedly connected with the piston rod through threads.
6. A liquid-driven low Wen Zhusai pump according to claim 1, wherein: the front end of the pump body is provided with a liquid inlet, a liquid inlet valve is arranged in the liquid inlet, one side of the pump body is provided with a liquid outlet, a porous channel is arranged in the liquid outlet, a truncated cone-shaped filter is arranged at the front end of the pump body, a precooling sleeve is arranged at the outer side of the truncated cone-shaped filter, one end of the precooling sleeve is fixedly connected with the pump body, a liquid hydrogen inlet is arranged at the other end of the precooling sleeve, an exhaust port is arranged at the upper part of one side of the precooling sleeve, a first heat-preserving sleeve fixedly connected with the pump body is arranged at the outer side of the precooling sleeve, a heat-preserving layer is arranged at the outer side of the first heat-preserving sleeve at intervals, a second heat-preserving sleeve is arranged at the outer side of the pump body corresponding to the position of a compression cavity, a third heat-preserving sleeve is arranged at the outer side of the pump body corresponding to the position of the compression cavity and the truncated cone-shaped filter at intervals of the second heat-preserving sleeve, and the third heat-preserving sleeve is arranged at the interval with the second heat-preserving sleeve.
7. A liquid-driven low Wen Zhusai pump according to claim 6, wherein: the first support flange is installed in the outside of first heat preservation telescopic, and the outside of the pump body is equipped with the second support flange, and second heat preservation telescopic fixed mounting is between the top of second support flange and the bottom of first support flange.
8. A liquid-driven low Wen Zhusai pump according to claim 7, wherein: the outside of the pump body is provided with a third support flange, and a third heat preservation sleeve is fixedly arranged between the top of the third support flange and the top of the first support flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322706385.0U CN220909920U (en) | 2023-10-09 | 2023-10-09 | Liquid-driven low Wen Zhusai pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322706385.0U CN220909920U (en) | 2023-10-09 | 2023-10-09 | Liquid-driven low Wen Zhusai pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220909920U true CN220909920U (en) | 2024-05-07 |
Family
ID=90908056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322706385.0U Active CN220909920U (en) | 2023-10-09 | 2023-10-09 | Liquid-driven low Wen Zhusai pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220909920U (en) |
-
2023
- 2023-10-09 CN CN202322706385.0U patent/CN220909920U/en active Active
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