CN220828309U - Anti-vaporization precooling liquid hydrogen pump - Google Patents
Anti-vaporization precooling liquid hydrogen pump Download PDFInfo
- Publication number
- CN220828309U CN220828309U CN202322539524.5U CN202322539524U CN220828309U CN 220828309 U CN220828309 U CN 220828309U CN 202322539524 U CN202322539524 U CN 202322539524U CN 220828309 U CN220828309 U CN 220828309U
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- China
- Prior art keywords
- sleeve
- pump body
- liquid hydrogen
- heat
- precooling
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- 239000007788 liquid Substances 0.000 title claims abstract description 80
- 239000001257 hydrogen Substances 0.000 title claims abstract description 66
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 66
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000009834 vaporization Methods 0.000 title claims abstract description 14
- 238000004321 preservation Methods 0.000 claims abstract description 34
- 230000006835 compression Effects 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 abstract description 8
- 150000002431 hydrogen Chemical class 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- Compressor (AREA)
Abstract
The utility model relates to the technical field of liquid hydrogen filling, in particular to an anti-vaporization precooling liquid hydrogen pump. The front end of the pump body is provided with a truncated cone-shaped filter, the outer side of the truncated cone-shaped filter is provided with a precooling sleeve, one end of the precooling sleeve is fixedly connected with the pump body, the other end of the precooling sleeve is provided with a liquid hydrogen inlet, one side upper portion of the precooling sleeve is provided with an exhaust port, the outer side of the precooling sleeve is provided with a first heat-preserving sleeve fixedly connected with the pump body, the outer side of the first heat-preserving sleeve is provided with a heat-preserving layer, the outer side of the pump body is provided with a second heat-preserving sleeve corresponding to the position of the compression cavity, and the outer side of the pump body is provided with a third heat-preserving sleeve corresponding to the position of the compression cavity and the truncated cone-shaped filter. The first heat preservation sleeve and the heat preservation layer can insulate heat and preserve heat for filtered liquid hydrogen, so that vaporization caused by the influence of external environment is avoided when the liquid hydrogen is filtered; the second heat preservation sleeve and the third heat preservation sleeve can insulate heat of the compression cavity in the pump body, so that liquid hydrogen is prevented from being vaporized during pressurization, liquid hydrogen loss is avoided, and compression efficiency is improved.
Description
Technical field:
The utility model relates to the technical field of liquid hydrogen filling, in particular to an anti-vaporization precooling liquid hydrogen 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. The liquid hydrogen is low-temperature liquid fuel, the temperature of the liquid hydrogen can be as low as-200 ℃ to-250 ℃, the boiling point of the liquid hydrogen is extremely low, the liquid hydrogen is easy to vaporize, in the process of filling the liquid hydrogen by a liquid hydrogen pump, the liquid hydrogen needs to be filtered before entering the liquid hydrogen pump, and then enters the liquid hydrogen pump for pressurization, and in the process of filtering, the liquid hydrogen is easy to vaporize 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 summary, the vaporization problem in the liquid hydrogen filling process has become a technical problem to be solved in the industry.
The utility model comprises the following steps:
The utility model provides a pre-cooling liquid hydrogen pump capable of preventing vaporization, which solves the problem that liquid hydrogen is easy to be vaporized to cause loss when liquid hydrogen is filtered and pressurized in a pump body in the past.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
The utility model provides a prevent vaporization precooling liquid hydrogen 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 and the actuating mechanism of piston are connected, the front end of the pump body is equipped with the inlet, is equipped with the feed liquor valve in the inlet, one side of the pump body is equipped with the liquid outlet, is equipped with porous channel in the liquid outlet, and the flat head conical filter is installed to the pump body front end, and the outside of flat head conical filter is equipped with precooling sleeve, and precooling sleeve's one end links firmly with the pump body, and the other end is equipped with the liquid hydrogen entry, and precooling sleeve's one side upper portion is equipped with the gas vent, precooling sleeve's outside is equipped with the first heat preservation sleeve that links firmly with the pump body, precooling sleeve and first heat preservation sleeve interval set up, and first heat preservation sleeve's outside is equipped with the heat preservation, and the second heat preservation sleeve is installed in the pump body outside corresponding the position of compression chamber, and the second heat preservation sleeve interval sets up with the pump body, and third heat preservation sleeve is installed in the pump body outside corresponding compression chamber and flat head conical filter's position.
The side wall of the pump body is provided with a flat pressing hole near the left side of the compression cavity, the flat pressing hole communicates the inside of the pump body with a cavity between the outside of the pump body and the second heat preservation sleeve, and the cavity between the outside of the pump body and the second heat preservation sleeve is communicated with the inner cavity of the precooling sleeve.
And a cylinder sleeve is arranged in the compression cavity and is in sliding contact with the piston.
And a guide ring is arranged between the piston and the cylinder sleeve.
A plurality of sealing rings are arranged between the piston and the cylinder sleeve.
A plurality of sealing rings are arranged between the piston rod and the pump body.
The sealing ring is divided into two areas by a spacer.
And the pump body is provided with radiating fins at positions corresponding to the piston rods.
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:
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.
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 precooling 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 cylinder sleeve, 15, a guide ring, 16, a sealing ring, 17, a sealing ring, 18, a radiating fin, 19, a first support flange, 20, a second support flange, 21, a third support flange, 22, a flat pressing hole, 23 and a spacer.
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, an anti-vaporization precooling liquid hydrogen 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 is connected with a driving mechanism, a liquid inlet is arranged at the front end of the pump body 1, a liquid inlet valve 4 is arranged in the liquid inlet, a liquid outlet is arranged at one side of the pump body 1, a porous channel 5 is arranged in the liquid outlet, the porous channel 5 is beneficial to increasing the liquid pressure, a truncated cone filter 6 is arranged at the front end of the pump body 1 and is used for filtering liquid hydrogen, a precooling sleeve 7 is arranged at the outer side of the truncated cone 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 and can discharge part of the liquid hydrogen outwards, 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 layer 11 is arranged at the outer side of the first heat-preserving sleeve 10 at intervals, a second heat-preserving sleeve 12 is arranged at the position of the pump body 1 corresponding to the compression cavity, a second heat-preserving sleeve 12 is arranged at the outer side of the first heat-preserving sleeve 12 at the first heat-preserving sleeve 1 at the interval and the first heat-preserving sleeve 1, a position corresponding to the first heat-preserving sleeve 13 is arranged at the first heat-preserving sleeve 1 at the position corresponding to the first heat-preserving sleeve 13 at the first heat-insulating position corresponding to the first heat preserving sleeve heat insulating the first heat insulating sleeve is arranged at the first heat insulating position and the heat insulating sleeve 1.
The side wall of the pump body 1 is provided with a flat pressing hole 22 near the left side of the compression cavity, the flat pressing hole 22 communicates the inside of the pump body 1 with a cavity between the outside of the pump body 1 and the second heat insulation sleeve 12, and the cavity between the outside of the pump body 1 and the second heat insulation sleeve 12 is communicated with the inner cavity of the pre-cooling sleeve 7. The flat pressing hole 22 is arranged at the inner edge of the second support flange 20, and the flat pressing hole 22 has two main functions, namely, liquid hydrogen leaked from the compression cavity can be discharged to a cavity between the outer side of the pump body 1 and the second heat insulation sleeve 12 and then flows back into the precooling sleeve 7 for recycling; secondly, the return pressure of the piston 2 can be reduced.
A cylinder sleeve 14 is arranged in the compression cavity, and the cylinder sleeve 14 is in sliding contact with the piston 2.
A guide ring 15 is arranged between the piston 2 and the cylinder sleeve 14 and is used for guiding the movement of the piston 2.
A plurality of sealing rings 16 are arranged between the piston 2 and the cylinder sleeve 14 and used for sealing between the piston 2 and the cylinder sleeve 14 and preventing liquid hydrogen from leaking between the piston 2 and the cylinder sleeve 14.
A plurality of sealing rings 17 are arranged between the piston rod 3 and the pump body 1 and used for sealing between the piston rod 3 and the pump body 1 and preventing liquid hydrogen from leaking between the piston rod 3 and the pump body 1.
The sealing ring 17 is divided into two areas by a spacer 23, and the spacer 23 is arranged at the outer edge of the third support flange 21, so that heat transfer between the sealing rings 17 in the two areas can be prevented.
The pump body 1 is provided with the radiating fins 18 at positions corresponding to the piston rods 3, so that the heat of the piston rods 3 can be radiated, and the heat transfer to the direction of the piston 2 caused by overhigh temperature of the piston rods 3 is avoided.
The first support flange 19 is installed on the outer side of the first heat preservation sleeve 10, the second support flange 20 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 20 and the bottom of the first support flange 19.
The outside of the pump body 1 is provided with a third support flange 21, and the third heat preservation sleeve 13 is fixedly arranged between the top of the third support flange 21 and the top of the first support flange 19.
Working principle:
During operation, under the action of the piston 2, liquid hydrogen enters the precooling sleeve 7 from the liquid hydrogen inlet 8, the liquid hydrogen is filtered through the truncated cone-shaped 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 is avoided during liquid hydrogen filtration, 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 (10)
1. An anti-vaporization precooling liquid hydrogen pump which is characterized in that: the pump comprises a pump body, a compression cavity is arranged in the pump body, a piston is arranged in the compression cavity, a piston rod of the piston is connected with a driving mechanism, a liquid inlet is formed in the front end of the pump body, a liquid inlet valve is formed in the liquid inlet, a liquid outlet is formed in one side of the pump body, a porous channel is formed in the liquid outlet, a truncated cone-shaped filter is arranged at the front end of the pump body, a precooling sleeve is arranged on 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 formed in the other end of the precooling sleeve, an exhaust port is formed in one upper portion of one side of the precooling sleeve, a first heat-preserving sleeve is fixedly connected with the pump body, the precooling sleeve is arranged at an interval with the first heat-preserving sleeve, a heat-preserving layer is arranged on the outer side of the first heat-preserving sleeve, a second heat-preserving sleeve is arranged at a position corresponding to the compression cavity on the outer side of the pump body, a third heat-preserving sleeve is arranged at an interval with the pump body, and a third heat-preserving sleeve is arranged at a position corresponding to the compression cavity and the flat cone-shaped filter.
2. The pre-chilled liquid hydrogen pump of claim 1, wherein: the side wall of the pump body is provided with a flat pressing hole near the left side of the compression cavity, the flat pressing hole communicates the inside of the pump body with a cavity between the outside of the pump body and the second heat preservation sleeve, and the cavity between the outside of the pump body and the second heat preservation sleeve is communicated with the inner cavity of the precooling sleeve.
3. The pre-chilled liquid hydrogen pump of claim 1, wherein: and a cylinder sleeve is arranged in the compression cavity and is in sliding contact with the piston.
4. The pre-chilled liquid hydrogen pump of claim 3, wherein: and a guide ring is arranged between the piston and the cylinder sleeve.
5. The pre-chilled liquid hydrogen pump of claim 3, wherein: a plurality of sealing rings are arranged between the piston and the cylinder sleeve.
6. The pre-chilled liquid hydrogen pump of claim 1, wherein: a plurality of sealing rings are arranged between the piston rod and the pump body.
7. The pre-chilled liquid hydrogen pump of claim 6, wherein: the sealing ring is divided into two areas by a spacer.
8. The pre-chilled liquid hydrogen pump of claim 1, wherein: and the pump body is provided with radiating fins at positions corresponding to the piston rods.
9. The pre-chilled liquid hydrogen pump of claim 1, 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.
10. The pre-chilled liquid hydrogen pump of claim 9, 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 |
|---|---|---|---|
| CN202322539524.5U CN220828309U (en) | 2023-09-19 | 2023-09-19 | Anti-vaporization precooling liquid hydrogen pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322539524.5U CN220828309U (en) | 2023-09-19 | 2023-09-19 | Anti-vaporization precooling liquid hydrogen pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220828309U true CN220828309U (en) | 2024-04-23 |
Family
ID=90727417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322539524.5U Active CN220828309U (en) | 2023-09-19 | 2023-09-19 | Anti-vaporization precooling liquid hydrogen pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220828309U (en) |
-
2023
- 2023-09-19 CN CN202322539524.5U patent/CN220828309U/en active Active
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