CN111306337A - Hydrogen differential pressure regulating valve of hydrogen production machine - Google Patents
Hydrogen differential pressure regulating valve of hydrogen production machine Download PDFInfo
- Publication number
- CN111306337A CN111306337A CN202010143855.5A CN202010143855A CN111306337A CN 111306337 A CN111306337 A CN 111306337A CN 202010143855 A CN202010143855 A CN 202010143855A CN 111306337 A CN111306337 A CN 111306337A
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- hydrogen
- valve
- oxygen
- valve body
- pressure
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- Pending
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 126
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 126
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 18
- 150000002431 hydrogen Chemical class 0.000 title claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000001301 oxygen Substances 0.000 claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 35
- 238000005192 partition Methods 0.000 claims abstract description 33
- 230000008859 change Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 9
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 229910001882 dioxygen Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a hydrogen differential pressure regulating valve of a hydrogen production machine, which comprises a valve body and a valve cover, wherein a hydrogen inlet and a hydrogen outlet are arranged on the valve body, an elastic partition part is fixed in the valve body and is respectively an oxygen cavity and a hydrogen cavity, a valve seat is fixed in the valve body, a valve core is fixed on the partition part, the valve core can selectively seal the valve seat through the elastic change of the partition part, a pressure spring is arranged on the surface of the partition part positioned on one side of the oxygen cavity in a propping manner, and the hydrogen pressure of a hydrogen cavity is equal to the sum of the oxygen pressure of the oxygen cavity and the pressure of the pressure spring on the partition part. The invention has the following beneficial effects: due to the existence of the pressure spring, the pressure difference between the hydrogen cavity and the oxygen cavity is ensured, the pressure in the hydrogen cavity is controlled to be always greater than the pressure in the oxygen cavity, and a basic regulation effect is realized for preparing high-purity hydrogen by a hydrogen preparation machine.
Description
Technical Field
The invention relates to the technical field of water electrolysis hydrogen production equipment, in particular to a hydrogen differential pressure regulating valve of a hydrogen production machine.
Background
Global warming, environmental deterioration, and reduction of petroleum resources, new energy is actively developed in various countries, and hydrogen energy is widely accepted as a clean energy to be applied to fuel cell systems, and is now applied to markets in bulk, such as fuel cell vehicles and hydrogen stations. At present, hydrogen is mainly prepared through a hydrolysis hydrogen production device, gas generated by the hydrolysis hydrogen production device comprises hydrogen and oxygen, and in the hydrolysis process, in order to ensure the safe operation of the hydrogen production machine, a control valve is required to be arranged to adjust the pressure inside the hydrogen production machine.
The existing hydrogen production machine generally adopts an electronic valve for regulating the hydrogen pressure, and the regulating mode has the following defects: electronic instrumentation must be required; a UPS must be required to prevent sudden power outages from causing the valve regulation function to fail; the valve core is connected with the pneumatic unit, the valve core is sealed by the stuffing box, and gas leakage is caused due to abrasion failure of the stuffing box due to frequent action of the valve core. Therefore, how to safely and effectively regulate the pressure inside the hydrogen production machine is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a hydrogen differential pressure regulating valve of a hydrogen production machine.
The purpose of the invention is realized by the following technical scheme:
a hydrogen differential pressure regulating valve of a hydrogen production machine, which comprises a valve body, wherein a hydrogen inlet and a hydrogen outlet are arranged on the valve body, a valve cover is fixedly arranged above the valve body, the valve cover and the valve body are hollow to form an inner space, an elastic partition part is fixed in the inner space and divides the inner space into two parts, namely an oxygen cavity and a hydrogen cavity, the hydrogen chamber is communicated with the hydrogen inlet and the hydrogen outlet, a valve seat is fixed in the valve body, a valve core is fixed on the partition piece, the elastic change of the partition piece enables the valve core to selectively seal the valve seat, the valve seat is arranged in the hydrogen cavity, after the valve core seals the valve seat, the hydrogen channel between the hydrogen inlet and the hydrogen outlet is cut off, a pressure spring is propped against the surface of the partition piece positioned on one side of the oxygen cavity, the hydrogen pressure of the hydrogen cavity is equal to the sum of the oxygen pressure of the oxygen cavity and the pressure of the pressure spring on the partition.
Preferably, an oxygen inlet is arranged on the valve cover in a penetrating manner, and the oxygen inlet is communicated with the oxygen cavity.
Preferably, the valve core is sleeved with a return spring, one end of the return spring abuts against the valve seat, and the other end of the return spring abuts against the partition member.
Preferably, the valve seat is provided with a central hole, the central hole is communicated with the hydrogen inlet and the hydrogen cavity, and the valve core is a conical free end and can selectively extend into the central hole.
Preferably, a first sealing ring is arranged between the valve seat and the valve body.
Preferably, the valve seat and the valve body are in tight fit.
Preferably, the hydrogen inlet and the hydrogen outlet are coaxial.
Preferably, the valve body and the valve cover are fastened by bolts, and the partition is fastened between the valve body and the valve cover by the bolts.
Preferably, the partition is a fluoroplastic diaphragm, and the valve core is a stainless steel member.
The invention has the following beneficial effects:
1. due to the existence of the pressure spring, the pressure difference between the hydrogen cavity and the oxygen cavity is ensured, so that the pressure in the hydrogen cavity is controlled to be always greater than that in the oxygen cavity, and a basic regulation effect is realized for preparing high-purity hydrogen by a hydrogen preparation machine;
2. the whole valve body is of a pure mechanical structure, and the problem of valve body regulation failure caused by power failure does not need to be worried about in the process of regulating the air pressure difference;
3. simple structure is exquisite, multistage sealing washer's setting, and the leakproofness is good.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1: a schematic diagram of an embodiment of the invention;
FIG. 2: an enlarged view of portion a in fig. 1.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in light of these embodiments are intended to be within the scope of the present invention.
In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.
As shown in FIG. 1, the invention discloses a hydrogen differential pressure regulating valve of a hydrogen production machine, which comprises a valve body 1, wherein a valve cover 3 is fixedly arranged above the valve body 1, in the preferred embodiment, the valve body 1 and the valve cover 3 are fastened by bolts, the valve body 1 and the valve cover 3 are hollow to form an inner space 100, and an elastic partition part 4 is fixed in the inner space 100 and divides the inner space 100 into two parts, namely an oxygen chamber 41 and a hydrogen chamber 42. The spacer 4 is fastened between the valve body 1 and the bonnet 3 by the bolt. Of course, in other embodiments, the valve body 1, the bonnet 3 and the partition 4 may be fixedly connected by other means, such as other mechanical mechanisms with fixing function or strong adhesives. The partition member 4 is a fluoroplastic diaphragm which has good high temperature resistance and corrosion resistance, and is water-permeable and air-impermeable, so that hydrogen generated in hydrogen preparation cannot permeate through the partition member 4.
The valve body 1 is provided with a hydrogen inlet 11 and a hydrogen outlet 12, and the hydrogen cavity 42 is communicated with the hydrogen inlet 11 and the hydrogen outlet 12; an oxygen inlet 31 is arranged on the valve cover 3 in a penetrating way, and the oxygen inlet 31 is communicated with the oxygen chamber 41. In order to optimize the structure of the device and reduce the volume of the device, the hydrogen inlet 11 and the hydrogen outlet 12 are coaxial, and the arrangement also makes the device more attractive.
A valve seat 2 is fixed in the valve body 1, and the valve seat 2 is arranged in the hydrogen chamber 42. In order to increase the sealing performance of the valve seat 2, a first sealing ring 8 is arranged between the valve seat 2 and the valve body 1, and the valve seat 2 and the valve body 1 are in tight fit. The elastic property of the first sealing ring 8 can ensure that the valve seat 2 and the valve body 1 are kept in close contact.
A valve core 5 is fixed on the partition 4, and the elastic change of the partition 4 enables the valve core 5 to selectively seal the valve seat 2. In the preferred embodiment, the valve core 5 is a stainless steel member, and the valve core 5 and the partition member 4 are integrally formed; in other embodiments, the valve core 5 may be fixed to the partition 4 by other suitable means such as an adhesive. Specifically, as shown in fig. 2, the valve seat 2 has a central hole 21, the central hole 21 is communicated with the hydrogen inlet 11 and the hydrogen cavity 42, the valve element 5 is a tapered free end and selectively extends into the central hole 21, and when the valve element 5 seals the valve seat 2, the hydrogen passage between the hydrogen inlet 11 and the hydrogen outlet 12 is cut off.
The accuracy of the valve core 5 extending into the central hole 21 is improved by the conical free end of the valve core 5, the inner wall of the central hole 21 is selectively provided with a second sealing ring 9, after the valve core 5 extends into the central hole 21, the outer wall of the valve core 5 is in close contact with the second sealing ring 9 to block the central hole 21, and meanwhile, the second sealing ring 9 is arranged to protect the valve core 5 from being excessively worn in the using process.
In order to keep the pressure balance between the two sides of the partition member 4, a pressure spring 6 is arranged on the surface of the partition member 4 on one side of the oxygen gas chamber 41 in a propping manner, and the hydrogen gas pressure of the hydrogen gas chamber 42 is equal to the sum of the oxygen gas pressure of the oxygen gas chamber 41 and the pressure of the pressure spring 6 on the partition member 4. The pressure spring 6 is arranged so that the hydrogen gas pressure in the hydrogen gas chamber 42 is always greater than the oxygen gas pressure in the oxygen gas chamber 41. If the hydrogen gas pressure in the hydrogen gas chamber 42 is to be adjusted, the pressure of the pressure spring 6 may be increased or decreased. Thus, because the pressure of the hydrogen in the hydrogen chamber 42 is consistent with the pressure of the hydrogen produced by the hydrogen producing machine, the pressure of the hydrogen side of the hydrogen produced by the hydrogen producing machine can be increased, and the pressure of the hydrogen on the two sides of the diaphragm of the water electrolyzer of the hydrogen producing machine can be further different (the pressure of the oxygen side is equal to the pressure of the oxygen chamber in the invention), namely the pressure of the oxygen is less than the pressure of the hydrogen, so that the oxygen can not penetrate through the diaphragm to enter the hydrogen side, and the hydrogen producing machine can more easily obtain high-purity hydrogen.
The valve core 5 is sleeved with a return spring 7, one end of the return spring is abutted against the valve seat 2, and the other end of the return spring is abutted against the partition piece 4. The return spring 7 can solve the problem that the valve core 5 is difficult to return after extending into the central hole 21.
The following brief description of the working principle of the present invention is:
hydrogen generated by the hydrogen generator enters the hydrogen chamber 42 from the hydrogen inlet 11, and oxygen generated by the hydrogen generator enters the oxygen chamber 41 from the oxygen inlet 31. Due to the presence of the compression spring 6, the pressure of hydrogen gas in the hydrogen chamber 42 is set higher than the pressure of oxygen gas in the oxygen chamber 41, the valve element 5 is separated from the valve seat 2, and the hydrogen gas is output from the hydrogen gas outlet 12 through the center hole 21.
When the pressure of the hydrogen generated by the hydrogen production machine needs to be changed, only the pressure springs 6 with different pressures need to be replaced. In actual production, the adjusting valve provided by the invention with different compression springs 6 can be replaced. The whole valve body is of a pure mechanical structure, and the problem of failure of valve body adjustment caused by power failure does not need to be worried about in the process of adjusting the air pressure difference.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. Hydrogen differential pressure governing valve of hydrogen manufacturing machine, its characterized in that: the valve comprises a valve body (1), wherein a hydrogen inlet (11) and a hydrogen outlet (12) are arranged on the valve body (1), a valve cover (3) is fixedly arranged above the valve body (1), the valve body and the valve cover are hollow to form an inner space (100), an elastic partition part (4) is fixed in the inner space (100) and divides the inner space (100) into two parts, namely an oxygen chamber (41) and a hydrogen chamber (42), the hydrogen chamber (42) is communicated with the hydrogen inlet (11) and the hydrogen outlet (12), a valve seat (2) is fixed in the valve body (1), a valve core (5) is fixed on the partition part (4), the valve core (5) can be selectively sealed by the elastic change of the partition part (4), the valve seat (2) is arranged in the hydrogen chamber (42), and after the valve core (5) seals the valve seat (2), and a hydrogen channel between the hydrogen inlet (11) and the hydrogen outlet (12) is cut off, a pressure spring (6) is arranged on the surface of the partition (4) positioned on one side of the oxygen chamber (41) in a propping manner, and the hydrogen pressure of the hydrogen chamber (42) is equal to the sum of the oxygen pressure of the oxygen chamber (41) and the pressure of the pressure spring (6) on the partition (4).
2. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 1, characterized in that: an oxygen inlet (31) is arranged on the valve cover (3) in a penetrating mode, and the oxygen inlet (31) is communicated with the oxygen chamber (41).
3. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 1, characterized in that: the periphery of the valve core (5) is sleeved with a return spring (7), one end of the return spring is abutted against the valve seat (2), and the other end of the return spring is abutted against the partition piece (4).
4. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 1, characterized in that: the valve seat (2) is provided with a central hole (21), the central hole (21) is communicated with the hydrogen inlet (11) and the hydrogen cavity (42), and the valve core (5) is a conical free end and can selectively extend into the central hole (21).
5. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 4, characterized in that: a first sealing ring (8) is arranged between the valve seat (2) and the valve body (1).
6. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 5, characterized in that: the valve seat (2) and the valve body (1) are in tight fit.
7. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 1, characterized in that: the hydrogen inlet (11) and the hydrogen outlet (12) are coaxial.
8. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 1, characterized in that: the valve body (1) and the valve cover (3) are fastened by bolts, and the partition (4) is fastened between the valve body (1) and the valve cover (3) by the bolts.
9. The hydrogen manufacturing machine hydrogen differential pressure regulating valve according to claim 1, characterized in that: the partition (4) is a fluoroplastic diaphragm, and the valve core (5) is a stainless steel part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010143855.5A CN111306337A (en) | 2020-03-04 | 2020-03-04 | Hydrogen differential pressure regulating valve of hydrogen production machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010143855.5A CN111306337A (en) | 2020-03-04 | 2020-03-04 | Hydrogen differential pressure regulating valve of hydrogen production machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111306337A true CN111306337A (en) | 2020-06-19 |
Family
ID=71149525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010143855.5A Pending CN111306337A (en) | 2020-03-04 | 2020-03-04 | Hydrogen differential pressure regulating valve of hydrogen production machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111306337A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1019986A (en) * | 1962-12-21 | 1966-02-09 | Robertshaw Controls Co | Breathing demand regulator |
| CN204312803U (en) * | 2014-12-02 | 2015-05-06 | 苏州竞立制氢设备有限公司 | There is the hydrogen-oxygen system balancing valve of pressure holding function |
| CN206708472U (en) * | 2017-04-21 | 2017-12-05 | 张家港富瑞阀门有限公司 | A kind of high pressure hydrogen pressure-reducing valve |
| CN109931499A (en) * | 2019-02-21 | 2019-06-25 | 北京航天试验技术研究所 | A kind of internal pressure balanced type adds hydrogen rifle and the internal pressure balanced type to add the application method of hydrogen rifle |
| CN211875203U (en) * | 2020-03-04 | 2020-11-06 | 苏州苏氢制氢设备有限公司 | Hydrogen differential pressure regulating valve of hydrogen production machine |
-
2020
- 2020-03-04 CN CN202010143855.5A patent/CN111306337A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1019986A (en) * | 1962-12-21 | 1966-02-09 | Robertshaw Controls Co | Breathing demand regulator |
| CN204312803U (en) * | 2014-12-02 | 2015-05-06 | 苏州竞立制氢设备有限公司 | There is the hydrogen-oxygen system balancing valve of pressure holding function |
| CN206708472U (en) * | 2017-04-21 | 2017-12-05 | 张家港富瑞阀门有限公司 | A kind of high pressure hydrogen pressure-reducing valve |
| CN109931499A (en) * | 2019-02-21 | 2019-06-25 | 北京航天试验技术研究所 | A kind of internal pressure balanced type adds hydrogen rifle and the internal pressure balanced type to add the application method of hydrogen rifle |
| CN211875203U (en) * | 2020-03-04 | 2020-11-06 | 苏州苏氢制氢设备有限公司 | Hydrogen differential pressure regulating valve of hydrogen production machine |
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