CN115111530A - Pressure reducing and exhausting device for high-pressure gas cylinder - Google Patents
Pressure reducing and exhausting device for high-pressure gas cylinder Download PDFInfo
- Publication number
- CN115111530A CN115111530A CN202210549155.5A CN202210549155A CN115111530A CN 115111530 A CN115111530 A CN 115111530A CN 202210549155 A CN202210549155 A CN 202210549155A CN 115111530 A CN115111530 A CN 115111530A
- Authority
- CN
- China
- Prior art keywords
- pressure
- gas cylinder
- pressure gas
- electric explosion
- explosion valve
- 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.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 68
- 238000004880 explosion Methods 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims description 21
- 230000006837 decompression Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 239000003999 initiator Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- 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
- Y02E60/32—Hydrogen storage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a high-pressure gas cylinder pressure reducing and exhausting device which comprises a high-pressure gas cylinder body, an electric explosion valve and a pressure reducer, wherein the electric explosion valve and the pressure reducer are fixed inside the high-pressure gas cylinder body, an inlet of the pressure reducer and an outlet of the electric explosion valve are welded into a whole, an air inlet of the electric explosion valve is exposed inside a gas cylinder, an inlet of the electric explosion valve is communicated with high-pressure gas in the gas cylinder, an initiator is installed at the other end of the electric explosion valve and is positioned outside the high-pressure gas cylinder body, and an air outlet of the pressure reducer is positioned outside the high-pressure gas cylinder body. The invention carries out integrated design on the gas circuit supercharging device, integrates the pressure reducer and the electric explosion valve in the high-pressure gas cylinder, has no pipe thread connection in the whole device, reduces the connection sealing link, improves the sealing reliability of the device, meets the requirements of miniaturization and high reliability, and can store and seal the electric explosion valve in the high-pressure gas cylinder for a long time.
Description
Technical Field
The invention belongs to the technical field of high-pressure gas cylinder devices, and particularly relates to an integrated electric explosion type high-pressure gas cylinder pressure reducing and exhausting device.
Background
The gas circuit system pressurization integrated device is a common device for power systems in the aerospace field, generally comprises a gas cylinder, an electric explosion valve and a pressure reducer which are sequentially connected through a pipeline, and is mainly used for storing high-pressure gas by the high-pressure gas cylinder. The technical scheme at present is that a gas cylinder, an electric explosion valve and a pressure reducer are sequentially connected through pipelines and are fixed outside, and the pressure reducer is arranged above the gas cylinder and fixed through bolts. The prior art has the following defects: the most basic requirements of the power system for the aerospace field on products are weight and space ratio, the smaller the space occupied by the products is, the lighter the weight is, and the less energy is consumed in the flight process, so that the competitive advantage is also provided in the industry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-pressure gas cylinder decompression exhaust device, which solves the problems of large product space occupation, fussy pipeline connection and unfavorable sealing based on the current requirements of miniaturization, integration, low cost and high reliability in the field of aerospace.
The technical scheme adopted by the invention is as follows: the utility model provides a high-pressure gas cylinder decompression exhaust apparatus, includes high-pressure gas cylinder, electric explosion valve, pressure reducer, inside electric explosion valve and pressure reducer were fixed in the high-pressure gas cylinder bottle, the pressure reducer import was as an organic whole with the welding of electric explosion valve export, and the electric explosion valve air inlet exposes inside the gas cylinder, and the electric explosion valve air inlet communicates with high-pressure gas in the gas cylinder, the detonator is installed to the other end of electric explosion valve, is located the high-pressure gas cylinder bottle outside, the gas outlet of pressure reducer is located the high-pressure gas cylinder bottle outside.
Preferably, the pressure reducer is of a reverse non-unloading type, the elastic element is a metal membrane, after the pressure reducer is debugged, an upper blocking cap, a lower blocking cap and an adjusting screw of the pressure reducer are welded and sealed, and a main spring cavity of the pressure reducer is connected with an external pressure hole through a communicating hole.
The effect is as follows: reduce and connect sealed link, improve the sealed reliability of product, this pressure reducer does not have non-metalwork to metal diaphragm is as elastic element, according to the regulation export pressure debugging completion back, will debug the screw department for welding seal, in order to satisfy miniaturization, high reliability demand, guarantee pressure reducer main spring chamber and ambient pressure intercommunication, make it have better environmental suitability.
Preferably, the electric explosion valve adopts a double-sealing metal membrane.
The effect is as follows: before the electric explosion valve is not opened, the external circumferential welding structure between the metal diaphragm and the shell is adopted, and compared with the common rubber ring sealing, the electric explosion valve can achieve the effect of small gas leakage amount under long-term storage, and realizes long-term storage sealing in a high-pressure gas cylinder.
Preferably, the joints of the high-pressure gas cylinder body, the electric explosion valve and the pressure reducer are all welded.
The effect is as follows: the whole device is connected without pipe threads, so that the connection sealing links are reduced, and the sealing reliability of the device is improved.
A processing technology of a high-pressure gas cylinder decompression exhaust device comprises the following steps:
step 5, mounting a detonator;
and 6, filling high-pressure gas into the high-pressure gas cylinder through the gas cylinder charging nozzle, wherein the pressure borne by the high-pressure gas cylinder is less than or equal to 30MPa, the volume of the high-pressure gas cylinder is more than or equal to 3L, and the adjustable rated pressure range of the high-pressure gas cylinder after decompression is 0.5MPa-3 MPa.
The invention has the beneficial effects that: the invention designs the gas circuit supercharging device in an integrated way, integrates the pressure reducer and the electric explosion valve in the high-pressure gas cylinder, designs the gas cylinder integrated structure with the built-in pressure reducer, has no pipe thread connection in the whole device, reduces the connection sealing link, meanwhile, the special-shaped pressure reducer structure is integrated in the gas cylinder, so that the cavity of the gas cylinder is filled with high-pressure gas, the space around the pressure reducer is fully utilized to fill high-pressure gas, the pressure reducer, the electric explosion valve and the gas cylinder are all sealed by welding, the connecting and sealing links are reduced, the sealing reliability of the product is improved, the pressure reducer has no non-metal parts, uses a metal diaphragm as an elastic element, performs welding and sealing on a bolt for debugging after the pressure of a specified outlet is debugged, the electric explosion valve adopts the design of a double-sealing metal diaphragm to realize long-term storage sealing in the high-pressure gas cylinder.
Drawings
FIG. 1 is a schematic view of the overall structure of a pressure reducing and exhausting device of a high-pressure gas cylinder;
FIG. 2 is a partially enlarged structural schematic view of a pressure reducing and exhausting device of a high-pressure gas cylinder;
fig. 3 is a schematic structural view of the back of the gas cylinder.
Reference numerals: 1-high pressure gas cylinder, 2-electric explosion valve, 3-pressure reducer, 4-gas outlet, 5-gas inlet hole, 6-exploder, 7-communication hole and 8-external pressure hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1 and fig. 2, a high-pressure gas cylinder decompression exhaust apparatus, including high-pressure gas cylinder 1, the electricity explodes valve 2, pressure reducer 3, electricity explodes valve 2 and adopts double containment metal diaphragm, electricity explodes valve 2 and pressure reducer 3 and is fixed in inside 1 bottle of high-pressure gas cylinder, 3 imports of pressure reducer and 2 export welding as an organic whole of electricity explode valve, 2 air inlets of electricity explode valve expose inside 1 high-pressure gas cylinder, 2 air inlets of electricity explode valve and high-pressure gas cylinder 1 high-pressure gas intercommunication, electricity explodes valve 2's other end installation exploder 5, be located 1 bottle of high-pressure gas cylinder outside, 4 gas outlets of pressure reducer 3 are located 1 bottle of high-pressure gas cylinder outside. The pressure reducer 3 is reverse non-unloading type, the elastic element is a metal membrane, after the pressure reducer 3 is debugged, the upper and lower blocking caps and the adjusting screw of the pressure reducer 3 are welded and sealed, as shown in fig. 2 and 3, a main spring cavity of the pressure reducer 3 is connected with an external pressure hole 8 through a communicating hole 7. The bottle body of the high-pressure gas bottle 1, the electric explosion valve 2 and the pressure reducer 3 are all connected by welding.
The processing technology of the high-pressure gas cylinder decompression exhaust device comprises the following steps:
step 5, mounting an initiator 6;
and 6, filling high-pressure gas into the high-pressure gas cylinder 1 through a gas cylinder charging nozzle.
The pressure born by the high-pressure gas cylinder is less than or equal to 30MPa, the volume of the high-pressure gas cylinder is more than or equal to 3L, and the adjustable rated pressure range of the gas high-pressure gas cylinder after decompression is 0.5MPa-3 MPa.
The main working principle of the invention is as follows:
when the device starts to work, the initiator 6 is detonated, huge thrust pushes the cutter to cut off a metal diaphragm inside the electric explosion valve 2, and at the moment, high-pressure gas in the high-pressure gas bottle 1 enters from the gas inlet hole 5, flows into the pressure reducer 3, is throttled and decompressed by the decompression valve, and flows out from the gas outlet 4.
The above description is the specific embodiment of the present invention and the technical principle applied, and any modification and equivalent transformation based on the technical solution of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a high-pressure gas cylinder decompression exhaust apparatus which characterized in that: including high-pressure gas cylinder, electric explosion valve, pressure reducer, inside electric explosion valve and pressure reducer were fixed in the high-pressure gas cylinder bottle, the pressure reducer import was as an organic whole with the electric explosion valve export welding, and the electric explosion valve air inlet exposes inside the gas cylinder, and the electric explosion valve air inlet communicates with high-pressure gas in the gas cylinder, the detonator is installed to the other end of electric explosion valve, is located the high-pressure gas cylinder bottle outside, the gas outlet of pressure reducer is located the high-pressure gas cylinder bottle outside.
2. A high pressure gas cylinder pressure reducing exhaust apparatus according to claim 1, characterized in that: the pressure reducer is reverse non-off-load type, and elastic element is metal diaphragm, and the back is accomplished in the pressure reducer debugging, carries out welded seal to stifled cap and adjusting screw about the pressure reducer, and pressure reducer main spring chamber passes through the intercommunicating pore and links to each other with external pressure hole.
3. A high pressure gas cylinder pressure reducing exhaust apparatus according to claim 1, characterized in that: the electric explosion valve adopts a double-sealing metal diaphragm.
4. A high pressure gas cylinder pressure reducing exhaust apparatus according to claim 1, characterized in that: the high-pressure gas cylinder body, the electric explosion valve and the pressure reducer are all connected in a welding way.
5. The high-pressure gas cylinder decompression and exhaust device according to claim 1, characterized in that the device is processed by the following steps:
step 1, assembling a pressure reducer, debugging the pressure reducer and welding the pressure reducer;
step 2, assembling the electric explosion valve, and welding an outlet of the electric explosion valve and an inlet of the pressure reducer;
step 3, butting the high-pressure gas cylinder semi-cylinder body with the structure in the step 2, welding and sealing an outlet of the pressure reducer and the high-pressure gas cylinder semi-cylinder body, and welding and sealing the electric explosion valve and the high-pressure gas cylinder semi-cylinder body;
step 4, butting the other half of the high-pressure gas cylinder and welding;
step 5, mounting a detonator;
and 6, filling high-pressure gas into the high-pressure gas cylinder through the gas cylinder charging nozzle, wherein the pressure borne by the high-pressure gas cylinder is less than or equal to 30MPa, the volume of the high-pressure gas cylinder is more than or equal to 3L, and the adjustable rated pressure range of the high-pressure gas cylinder after decompression is 0.5MPa-3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210549155.5A CN115111530B (en) | 2022-05-20 | 2022-05-20 | Decompression exhaust device of high-pressure gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210549155.5A CN115111530B (en) | 2022-05-20 | 2022-05-20 | Decompression exhaust device of high-pressure gas cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115111530A true CN115111530A (en) | 2022-09-27 |
| CN115111530B CN115111530B (en) | 2024-01-12 |
Family
ID=83326161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210549155.5A Active CN115111530B (en) | 2022-05-20 | 2022-05-20 | Decompression exhaust device of high-pressure gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115111530B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884521A1 (en) * | 1997-05-15 | 1998-12-16 | Delegation Generale Pour L'armement, Bureau De La Propriete Industrielle D.R.E.T. | Gas supplying assembly for connection to a high pressure gas container |
| US20030066836A1 (en) * | 2001-09-19 | 2003-04-10 | Samtech Corporation | High-pressure tank apparatus |
| KR200344343Y1 (en) * | 2003-12-26 | 2004-03-10 | 이종태 | Apparatus for prohibiting explosion of gas can for portable gas burner |
| KR20050066966A (en) * | 2004-08-24 | 2005-06-30 | 이종태 | Apparatus for prohibiting explosion of gas can for portable gas burner |
| CN101418910A (en) * | 2008-11-28 | 2009-04-29 | 同济大学 | Integral bottle valve FOR vehicle-mounted high-pressure hydrogen storing bottle |
| CN204114566U (en) * | 2014-09-26 | 2015-01-21 | 上海舜华新能源系统有限公司 | A kind of integrated cylinder valve for high-pressure gas cylinder |
| CN204717347U (en) * | 2015-06-16 | 2015-10-21 | 成都润博科技有限公司 | Source of the gas dynamic monitor |
| TWI625486B (en) * | 2017-07-12 | 2018-06-01 | Inflatable joint that can wirelessly transmit air pressure data to an electronic device and its combination with a high pressure gas cylinder | |
| CN109296812A (en) * | 2018-07-13 | 2019-02-01 | 上海宇航系统工程研究所 | A kind of high pressure cylinder valve |
| CN209512656U (en) * | 2018-09-29 | 2019-10-18 | 凯迈（洛阳）气源有限公司 | It is a kind of to practice the control air source equipment of thunder for torpedo |
| CN211502322U (en) * | 2019-06-24 | 2020-09-15 | 西安航天动力研究所 | Pre-packaged storage module for storing high-pressure gas for long time |
| CN212023034U (en) * | 2020-04-16 | 2020-11-27 | 北京宇航推进科技有限公司 | Integrated gas circuit combined system |
| CN112254005A (en) * | 2020-11-12 | 2021-01-22 | 北京宇航推进科技有限公司 | Gas supply assembly |
| CN113375054A (en) * | 2021-01-11 | 2021-09-10 | 北京航空航天大学 | Valve combination device with electric explosion valve in front |
| CN113685593A (en) * | 2021-08-20 | 2021-11-23 | 沈阳航天新光集团有限公司 | Gas explosion type pressure reducing module |
-
2022
- 2022-05-20 CN CN202210549155.5A patent/CN115111530B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884521A1 (en) * | 1997-05-15 | 1998-12-16 | Delegation Generale Pour L'armement, Bureau De La Propriete Industrielle D.R.E.T. | Gas supplying assembly for connection to a high pressure gas container |
| US20030066836A1 (en) * | 2001-09-19 | 2003-04-10 | Samtech Corporation | High-pressure tank apparatus |
| KR200344343Y1 (en) * | 2003-12-26 | 2004-03-10 | 이종태 | Apparatus for prohibiting explosion of gas can for portable gas burner |
| KR20050066966A (en) * | 2004-08-24 | 2005-06-30 | 이종태 | Apparatus for prohibiting explosion of gas can for portable gas burner |
| CN101418910A (en) * | 2008-11-28 | 2009-04-29 | 同济大学 | Integral bottle valve FOR vehicle-mounted high-pressure hydrogen storing bottle |
| CN204114566U (en) * | 2014-09-26 | 2015-01-21 | 上海舜华新能源系统有限公司 | A kind of integrated cylinder valve for high-pressure gas cylinder |
| CN204717347U (en) * | 2015-06-16 | 2015-10-21 | 成都润博科技有限公司 | Source of the gas dynamic monitor |
| TWI625486B (en) * | 2017-07-12 | 2018-06-01 | Inflatable joint that can wirelessly transmit air pressure data to an electronic device and its combination with a high pressure gas cylinder | |
| CN109296812A (en) * | 2018-07-13 | 2019-02-01 | 上海宇航系统工程研究所 | A kind of high pressure cylinder valve |
| CN209512656U (en) * | 2018-09-29 | 2019-10-18 | 凯迈（洛阳）气源有限公司 | It is a kind of to practice the control air source equipment of thunder for torpedo |
| CN211502322U (en) * | 2019-06-24 | 2020-09-15 | 西安航天动力研究所 | Pre-packaged storage module for storing high-pressure gas for long time |
| CN212023034U (en) * | 2020-04-16 | 2020-11-27 | 北京宇航推进科技有限公司 | Integrated gas circuit combined system |
| CN112254005A (en) * | 2020-11-12 | 2021-01-22 | 北京宇航推进科技有限公司 | Gas supply assembly |
| CN113375054A (en) * | 2021-01-11 | 2021-09-10 | 北京航空航天大学 | Valve combination device with electric explosion valve in front |
| CN113685593A (en) * | 2021-08-20 | 2021-11-23 | 沈阳航天新光集团有限公司 | Gas explosion type pressure reducing module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115111530B (en) | 2024-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108953994A (en) | Hydrogen fuel cell unmanned plane high pressure gas cylinder cylinder valve | |
| CN110131574B (en) | Fuel cell hydrogen supply system based on combination valve and hydrogen charging and supplying method thereof | |
| CN112444397B (en) | Airtightness testing equipment and method for LGIP (light emitting diode) host gas module | |
| US11460121B1 (en) | Safety relief valve for high-pressure hydrogen cylinder | |
| CN201646610U (en) | Automatic protection device of dump truck hydraulic pipeline | |
| CN115111530B (en) | Decompression exhaust device of high-pressure gas cylinder | |
| CN208579149U (en) | A kind of hydrogen fuel cell unmanned plane high pressure gas cylinder cylinder valve | |
| CN112523895A (en) | Novel gas generator and inflation test method thereof | |
| CN87215755U (en) | Multifunction-closed type pre-operation safe valve | |
| CN205244407U (en) | Ultra -low temperature hand stop valve | |
| CN209762351U (en) | Explosion-proof valve actuator | |
| CN106402487B (en) | A kind of microminiature adds valve | |
| CN217380815U (en) | Gas supercharger | |
| CN207145702U (en) | A kind of natural gas pneumatic stopping valve | |
| CN113323771A (en) | Modular power system for spacecraft and power propulsion method | |
| CN210607473U (en) | Hydrogen pressure reducing device of fuel cell | |
| CN215334646U (en) | Pipeline valve seat structure of marine high-pressure gas storage device | |
| CN210531701U (en) | Automatic battery box of pressure release | |
| CN204153256U (en) | A kind of electric explosion valve cuts brokenly part | |
| CN215059675U (en) | Soft sealing ball valve with middle cavity pressure relief function | |
| CN109387438A (en) | Electromechanical water pipe water injection pressure device and manufacturing method thereof | |
| CN205118656U (en) | Urgent separation device is used to low temperature fluid loading and unloading arm | |
| CN214660736U (en) | Mixed petroleum gas compressor head | |
| CN220751212U (en) | High-pressure-resistant oil immersion type sensor | |
| CN204515153U (en) | The power valve of high-power program control focus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |