CN112901444A - Linear reciprocating type hydrogen circulating pump - Google Patents
Linear reciprocating type hydrogen circulating pump Download PDFInfo
- Publication number
- CN112901444A CN112901444A CN202110176247.9A CN202110176247A CN112901444A CN 112901444 A CN112901444 A CN 112901444A CN 202110176247 A CN202110176247 A CN 202110176247A CN 112901444 A CN112901444 A CN 112901444A
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- CN
- China
- Prior art keywords
- wall
- hydrogen
- piston
- air inlet
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 72
- 239000001257 hydrogen Substances 0.000 title claims abstract description 72
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 239000007769 metal material Substances 0.000 claims abstract description 11
- 229920002313 fluoropolymer Polymers 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000005461 lubrication Methods 0.000 abstract description 5
- 229910052755 nonmetal Inorganic materials 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
本发明涉及一种氢燃料电池系统中使富余氢气循环使用的装置，特别涉及一种直线往复式氢气循环泵，包括有缸体，活塞，电机；缸体上设有进气口、出气口，所述的进气口、出气口内均设置有单向瓣膜，所述的单向瓣膜为弹性非金属材料，所述的缸体的上部内壁、进气口内壁、出气口内壁以及活塞的上端，均涂覆有非金属涂层，缸体内壁在位于活塞与进气口之间设置有可伸缩的伸缩壁，所述的伸缩壁、非金属涂层与两个单向瓣膜之间形成封闭空间。本发明可以避免活塞等运动件的润滑造成氢气污染，避免氢脆现象；方便调节氢气的进气压力。
The invention relates to a device for circulating surplus hydrogen in a hydrogen fuel cell system, in particular to a linear reciprocating hydrogen circulating pump, comprising a cylinder block, a piston and a motor; the cylinder block is provided with an air inlet and an air outlet, The air inlet and the air outlet are provided with a one-way valve, the one-way valve is an elastic non-metallic material, the upper inner wall of the cylinder body, the inner wall of the air inlet, the inner wall of the air outlet and the upper end of the piston, All are coated with non-metallic coating, and the inner wall of the cylinder is provided with a telescopic telescopic wall between the piston and the air inlet, and a closed space is formed between the telescopic wall, the non-metallic coating and the two one-way valves . The invention can avoid hydrogen pollution caused by the lubrication of moving parts such as pistons, avoid the phenomenon of hydrogen embrittlement, and is convenient to adjust the intake pressure of hydrogen.
Description
Technical Field
The invention relates to a device for recycling surplus hydrogen in a hydrogen fuel cell system, in particular to a linear reciprocating type hydrogen circulating pump.
Background
In a hydrogen fuel cell system, it is necessary to supply hydrogen gas without oil, to have a certain pressure, and to recover and reuse excessive hydrogen gas.
The working principle and the process are as follows: the hydrogen path of the hydrogen fuel cell system supplies excessive hydrogen to enter the galvanic pile for reaction, after the galvanic pile reaction, the excessive hydrogen and the water vapor pass through the gas-water separator, and then the pump enters the excessive hydrogen into the hydrogen fuel cell for reaction.
For a circulating pump adopting a piston pump, because the reciprocating motion of a piston needs lubricating oil lubrication, a small amount of lubricating oil steam is mixed in hydrogen, and the performance and the service life of a galvanic pile are influenced. On the other hand, the inner wall of the cylinder and the piston are made of metal materials, so that hydrogen embrittlement is easily caused, and the service life is shortened.
Disclosure of Invention
The invention aims to provide a linear reciprocating type hydrogen circulating pump, which avoids the mixing of lubricating oil and the hydrogen embrittlement.
The invention relates to a linear reciprocating hydrogen circulating pump, which is characterized in that: comprises a cylinder body, a reciprocating piston which can move up and down on the lower part of the cylinder body, and a motor which drives the reciprocating piston to operate;
the upper portion lateral wall or the top of cylinder body are equipped with air inlet, gas outlet, air inlet, gas outlet in all be provided with one-way valve, one-way valve be elastic non-metallic material, the upper portion inner wall of cylinder body, air inlet inner wall, gas outlet inner wall and reciprocating piston's upper end, all coated with non-metallic coating, the internal wall of piston cylinder is being located and is being provided with the flexible wall of telescopic between reciprocating piston and the air inlet, flexible wall, non-metallic coating and two one-way valve between form the enclosure space.
In the above-described linear reciprocating hydrogen circulation pump of the present invention, it is preferable that: the telescopic wall is a folding wall.
In the above-described linear reciprocating hydrogen circulation pump of the present invention, it is preferable that: the air inlet is positioned at the upper part of the side surface of the cylinder body, and the air outlet is positioned at the top end of the cylinder body.
In the above-described linear reciprocating hydrogen circulation pump of the present invention, it is preferable that: the motor is a linear motor.
In the above-described linear reciprocating hydrogen circulation pump of the present invention, it is preferable that: the cylinder body is divided into an upper part and a lower part which are connected through threads, and the interface is positioned in the middle or the lower part of the cylinder body.
In the above-described linear reciprocating hydrogen circulation pump of the present invention, it is preferable that: the telescopic wall and the non-metal material coating are made of fluoroplastics.
The working principle and the process of the invention are as follows: excess hydrogen supplied by a hydrogen path of a hydrogen fuel cell system enters a galvanic pile for reaction, the excess hydrogen and water vapor enter a hydrogen circulating pump through an air inlet after passing through a gas-water separator, a reciprocating piston drives a folding wall to move downwards, the folding wall is stretched, the space in the cavity is increased, the pressure in the cavity is reduced, the air inlet is an inward opening one-way valve and is opened under the action of pressure difference, low-pressure hydrogen enters a cylinder cavity through the air inlet and the one-way valve, the one-way valve at the position of an air outlet is opened outwards, and the air outlet is closed. When the reciprocating piston reaches the bottom and then moves upwards, the folding wall is compressed, the volume in the cavity of the air cylinder is reduced, the pressure in the cavity is increased, when the pressure in the cavity and the pressure difference of the air inlet end are reduced, the one-way valve of the air inlet is closed gradually, the pressure in the cavity is increased and forms a pressure difference with the air outlet end, the one-way valve of the air outlet end is opened due to the sufficient pressure difference, and therefore high-pressure hydrogen is output outwards in the cavity. The pressure of the gas outlet end is determined according to the hydrogen inlet pressure of the galvanic pile, and the hydrogen output by the circulating pump is mixed with the hydrogen inlet of the galvanic pile system and enters the galvanic pile to react again.
The reciprocating piston is driven by a linear motor, so that the piston is prevented from generating lateral force, and the friction damage of the head and the skirt of the piston is reduced;
the folding wall and the inner wall surface of the cylinder are made of non-metal materials, so that the hydrogen embrittlement phenomenon is avoided;
the folding wall, the inner wall surface of the cylinder, the top of the piston and the one-way valves at the inlet and the outlet form a closed space, so that hydrogen pollution caused by lubrication of moving parts such as the piston is avoided.
Through the rotatory screw thread, can adjust the distance between the upper and lower part of piston cylinder body, change the distance that the piston reciprocated, and then adjust the compression ratio of hydrogen, change the admission pressure of hydrogen.
The invention has the beneficial effects that: because the hydrogen channel is a closed space, the hydrogen pollution caused by the lubrication of moving parts such as a piston and the like is avoided, and the folding wall and the inner wall surface of the cylinder are made of non-metallic materials, so that the hydrogen embrittlement phenomenon is avoided; the reciprocating piston is driven by the linear motor, so that the piston is prevented from generating lateral force, the head part and the skirt part of the piston are prevented from being damaged by friction, and the air inlet pressure of hydrogen is conveniently adjusted.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention
FIG. 2 is a schematic view of the upper structure of the piston cylinder of the present invention
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention
In the figure, 1 cylinder body, 2 pistons, 3 motors, 4 air inlets, 5 air outlets, 6 one-way valves, 7 non-metal coatings, 8 telescopic walls and 9 threaded sleeves.
Detailed Description
Example 1:
fig. 1 and 2 are schematic structural views of embodiment 1 of the present invention.
The invention relates to a linear reciprocating type hydrogen circulating pump, which comprises a cylinder body 1, a reciprocating piston 2 which can move up and down on the lower part of the cylinder body, and a motor 3 which drives the reciprocating piston to operate, wherein the motor 3 is a linear motor. The reciprocating piston is driven by the linear motor to move up and down in the piston cylinder body.
An air inlet 4 is formed in one side face of the upper portion of the piston cylinder body, an air outlet 5 is formed in the upper end of the piston cylinder body, one-way valves are arranged in the air inlet and the air outlet and are made of elastic non-metal materials, the one-way valves of the air inlet are in an inward opening type, and the one-way valves of the air outlet are in an outward opening type.
The upper portion inner wall of piston cylinder body, air inlet inner wall, gas outlet inner wall and reciprocating piston's upper end, all coated with nonmetal coating 7, piston cylinder body inner wall is being located and is being provided with telescopic wall 8 between reciprocating piston and the air inlet, telescopic wall, nonmetal coating and two one-way valve between form the enclosure space. The telescopic wall is a folding wall. The telescopic wall and the non-metallic material coating are made of tetrafluoroethylene plastics.
The working principle and the process of the invention are as follows: excess hydrogen supplied by a hydrogen path of a hydrogen fuel cell system enters a galvanic pile for reaction, the excess hydrogen and water vapor enter a hydrogen circulating pump through an air inlet after passing through a gas-water separator, a reciprocating piston drives a folding wall to move downwards, the folding wall is stretched, the space in the cavity is increased, the pressure in the cavity is reduced, the air inlet is an inward opening one-way valve and is opened under the action of pressure difference, low-pressure hydrogen enters a cylinder cavity through the air inlet and the one-way valve, the one-way valve at the position of an air outlet is opened outwards, and the air outlet is closed. When the reciprocating piston reaches the bottom and then moves upwards, the folding wall is compressed, the volume in the cavity of the air cylinder is reduced, the pressure in the cavity is increased, when the pressure in the cavity and the pressure difference of the air inlet end are reduced, the one-way valve of the air inlet is closed gradually, the pressure in the cavity is increased and forms a pressure difference with the air outlet end, the one-way valve of the air outlet end is opened due to the sufficient pressure difference, and therefore high-pressure hydrogen is output outwards in the cavity. The pressure of the gas outlet end is determined according to the hydrogen inlet pressure of the galvanic pile, and the hydrogen output by the circulating pump is mixed with the hydrogen inlet of the galvanic pile system and enters the galvanic pile to react again.
The reciprocating piston is driven by a linear motor, so that the piston is prevented from generating lateral force to cause friction damage to the head and the skirt of the piston;
the folding wall and the inner wall surface of the cylinder are made of non-metal materials, so that the hydrogen embrittlement phenomenon is avoided;
the folding wall, the inner wall surface of the cylinder, the top of the piston and the one-way valves at the inlet and the outlet form a closed space, so that hydrogen pollution caused by lubrication of moving parts such as the piston is avoided.
Example 2
The piston cylinder 1 as shown in fig. 3 is another embodiment of the invention.
The piston cylinder body 1 is divided into an upper part and a lower part, and the interface is positioned on the folding wall of the piston cylinder body. The threaded sleeve 9 is sleeved outside the joint, an internal thread is arranged on the inner wall of the threaded sleeve, an external thread is arranged on the upper portion of the lower cylinder body, the length of the cylinder body can be adjusted by rotating the lower cylinder body, the running distance of the piston is changed, and the compression ratio of hydrogen is adjusted.
The air inlet 4 and the air outlet 5 are both positioned at the top end of the piston cylinder body.
The other structure of this embodiment is substantially the same as embodiment 1.
Because the hydrogen of the straight-line reciprocating type hydrogen circulating pump needs to be connected with a hydrogen inlet of a hydrogen fuel cell and needs to have different air inlet pressures, the distance between the upper part and the lower part of the piston cylinder body can be adjusted by rotating the screw threads to conveniently adjust the pressure, the up-down moving distance of the piston is changed, the compression ratio of the hydrogen is further adjusted, and the air inlet pressure of the hydrogen is changed.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176247.9A CN112901444A (en) | 2021-02-09 | 2021-02-09 | Linear reciprocating type hydrogen circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176247.9A CN112901444A (en) | 2021-02-09 | 2021-02-09 | Linear reciprocating type hydrogen circulating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901444A true CN112901444A (en) | 2021-06-04 |
Family
ID=76122918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110176247.9A Pending CN112901444A (en) | 2021-02-09 | 2021-02-09 | Linear reciprocating type hydrogen circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112901444A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707908A (en) * | 2020-06-09 | 2021-11-26 | 上海重塑能源科技有限公司 | Hydrogen supply system and hydrogen supply method in fuel cell system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407644A (en) * | 2001-08-23 | 2003-04-02 | 亚太燃料电池科技股份有限公司 | Diaphragm pump for fuel cell and anode gas circulation system using the diaphragm pump |
| JP2003178782A (en) * | 2001-12-12 | 2003-06-27 | Honda Motor Co Ltd | Hydrogen pump and fuel cell system using hydrogen pump |
| JP2005259439A (en) * | 2004-03-10 | 2005-09-22 | Toyota Motor Corp | Fuel cell system |
| CN105745445A (en) * | 2013-11-20 | 2016-07-06 | 日本皮拉工业株式会社 | Diaphragm pump |
| CN110566459A (en) * | 2019-09-11 | 2019-12-13 | 烟台东德实业有限公司 | Hydrogen circulating pump assembly |
| CN111749868A (en) * | 2019-03-27 | 2020-10-09 | 上海恒劲动力科技有限公司 | Compression device suitable for high inlet pressure |
-
2021
- 2021-02-09 CN CN202110176247.9A patent/CN112901444A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407644A (en) * | 2001-08-23 | 2003-04-02 | 亚太燃料电池科技股份有限公司 | Diaphragm pump for fuel cell and anode gas circulation system using the diaphragm pump |
| JP2003178782A (en) * | 2001-12-12 | 2003-06-27 | Honda Motor Co Ltd | Hydrogen pump and fuel cell system using hydrogen pump |
| JP2005259439A (en) * | 2004-03-10 | 2005-09-22 | Toyota Motor Corp | Fuel cell system |
| CN105745445A (en) * | 2013-11-20 | 2016-07-06 | 日本皮拉工业株式会社 | Diaphragm pump |
| CN111749868A (en) * | 2019-03-27 | 2020-10-09 | 上海恒劲动力科技有限公司 | Compression device suitable for high inlet pressure |
| CN110566459A (en) * | 2019-09-11 | 2019-12-13 | 烟台东德实业有限公司 | Hydrogen circulating pump assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707908A (en) * | 2020-06-09 | 2021-11-26 | 上海重塑能源科技有限公司 | Hydrogen supply system and hydrogen supply method in fuel cell system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |