CN107519594A - A kind of multichannel spark arrester and its method of work - Google Patents
A kind of multichannel spark arrester and its method of work Download PDFInfo
- Publication number
- CN107519594A CN107519594A CN201710711972.5A CN201710711972A CN107519594A CN 107519594 A CN107519594 A CN 107519594A CN 201710711972 A CN201710711972 A CN 201710711972A CN 107519594 A CN107519594 A CN 107519594A
- Authority
- CN
- China
- Prior art keywords
- housing
- subtube
- valve
- stop valve
- liquid
- 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
- 238000000034 method Methods 0.000 title claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 31
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000004880 explosion Methods 0.000 claims abstract description 16
- 238000013022 venting Methods 0.000 claims abstract description 12
- 238000005474 detonation Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 238000004200 deflagration Methods 0.000 claims description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 239000001569 carbon dioxide Substances 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical group C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Safety Valves (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention belongs to spark arrester field, and in particular to a kind of multichannel spark arrester and its method of work.The multichannel spark arrester is made up of main pipe system, subtube system, housing system.Main pipe system is made up of the first temperature sensor and main pipeline；Subtube system is made up of the first subtube, the second subtube, the first stop valve, second temperature sensor, the 3rd subtube；Housing system is made up of liquid, the second stop valve, inlet duct, outlet conduit, the 3rd stop valve and five ducts of explosion venting valve, housing, water or other difficult dissolved methanes.As long as housing, tee ball valve, the intensity of pipeline meet the requirements the present invention in principle, the sprawling of detonation flame can be prevented, in view of the enormous impact force and danger of detonation flame, in the housing explosion venting valve can be set and opened using intelligent program remote control valve, to ensure operating personnel's safety.
Description
Technical field
The invention belongs to spark arrester field, more particularly to a kind of multichannel spark arrester and its method of work.
Background technology
Fuel gas fire arrestor is a kind of device that can prevent deflagration flame spreading and propagation, is mainly made up of housing and filter core,
Housing should have enough intensity and toughnesses, and to bear great blast impulse pressure, filter core can make flame that extinguishing occur." west
Gas east is defeated " after completion of works, it is increasing it is home-use gone up NORTHWEST CHINA, the Central Asia and the natural gas of Russia, this gives China
The life of the people brings great convenience, but triggers the accident of blast also to emerge in an endless stream due to fuel gas pipeline leakage, and this gives us
Combustion gas transport and storage in terms of sound the alarm.We should pay special attention to the safety problem of natural gas line, and how thinking subtracts
It is few even to prevent accident, prevent trouble before it happens.Early in nineteen twenty-eight, spark arrester just with the oil tank of oil and oil product,
Fire occurs during for preventing the oil tank for storing light petroleum from running into naked light and creates greater casualties, is improved by continuing to optimize,
Present spark arrester is also used on the grid for transporting inflammable gas, for prevent pipe leakage run into naked light formed in pipeline it is quick-fried
Fire flame, and then avoid due to fierceness chemical reaction and coarse tube wall influence and make flame drastically in pipe propagate turn twist for
Detonation, cause catastrophic failure.Industrial spark arrester is divided into explosion arrestment combustion type spark arrester and explosion arrestment Hong type spark arrester by flame speed,
Explosion arrestment combustion type spark arrester can make the subsonic speed flame of sprawling that extinguishing occur, and explosion arrestment Hong type spark arrester can make the supersonic flame of sprawling
Generation extinguishing.Outstanding industrial spark arrester design, can tackle the threat of high velocity deflagration flame and detonation flame, avoid flame
Travel in miscellaneous equipment and cause bigger disaster, effectively ensure the security of the lives and property of the people.
When not occurring deflagration flame, the spark arrester installed in the duct can transport to combustible gas causes certain flowing to hinder
Power, this adds transport cost to a certain extent, causes energy dissipation.
The content of the invention
The problem of existing for prior art, the invention provides a kind of multichannel spark arrester, leading portion sets TEMP
Device, detect whether deflagration flame occur, when the appearance of no deflagration flame, combustible gas accessible transport in main pipeline, work as burst
Deflagration flame, deflagration flame " urgent conveying " can be handled to another system, avoid occurring large quantity of exhaust gas hardly possible in main pipeline
With cleaning, the quality of reduction downstream combustible gas.
The present invention is achieved through the following technical solutions：
A kind of multichannel spark arrester, it is made up of main pipe system, subtube system, housing system；
The main pipe system is made up of the first temperature sensor and main pipeline, and the first temperature sensor is arranged at main pipeline
On, for determining the temperature of combustible gas.
The subtube system is by the first subtube, the second subtube, the first stop valve, second temperature sensor, the 3rd
Subtube forms.First subtube one end is connected by the first tee ball valve with main pipeline, and the other end passes through the duct on housing
It extend into the liquid of water or other difficult dissolved methanes；Second subtube one end connects the first stop valve and stretched into air, another
End is extend into by the duct on housing above the liquid of water or other difficult dissolved methanes；3rd subtube one end passes through the two or three
Pass ball valve is connected with main pipeline, and the other end is extend into by the duct on housing above the liquid of water or other difficult dissolved methanes,
There are filling region and second temperature sensor between duct and the second tee ball valve on housing, filling region is by that can absorb
The filling of the material of carbon dioxide and water forms, and second temperature sensor is used for the temperature for determining combustible gas, the first subtube, second
Subtube and the 3rd subtube are without fixed relative position.
The housing system by explosion venting valve, housing, water or other difficult dissolved methanes liquid, the second stop valve, inlet tube
Road, outlet conduit, the 3rd stop valve, pressure sensor and five duct compositions.Inlet duct passes through the duct on housing and shell
Body connects, and the second stop valve is provided with the inlet duct, for controlling the liquid of water or other difficult dissolved methanes to enter shell
Body, the outlet conduit are connected by the duct on housing with housing, the 3rd stop valve are provided with outlet conduit, for controlling
The waste liquid for absorbing carbon dioxide is discharged into housing.
Further, pressure sensor is there also is provided on housing system；
Explosion venting valve is arranged at housing side, and when pressure is more than allowable value in housing, explosion venting valve automatically turns on pressure release, to ensure
Housing is not destroyed.
The method of work of multichannel spark arrester of the present invention, comprises the following steps：
(1) work temperature is set for the first temperature sensor0, T0Adiabatic combustion temperature 2323K is arranged to,
As measured temperature T ＞ T0, illustrate deflagration flame occur, open the first tee ball valve, flame will enter housing system；
As measured temperature T ＜ T0, air delivering pipeline is normal, and the first tee ball valve is closed, and combustible gas will pass through master
The accessible onwards transmission of pipeline, the necessary condition that the second tee ball valve is opened are that the first tee ball valve is opened；
(2) allowable pressure P is set for pressure sensor0, as pressure P in housing>P0, the unlatching of the first stop valve, otherwise it is in
Normally off；
(3) as T ＞ T0, occur deflagration flame in pipeline, the first tee ball valve and the second tee ball valve are opened, deflagration flame
Into the first subtube, it is impossible into main pipeline, the pressure in pressure sensor detection housing, as pressure P in housing>P0,
First stop valve is opened, and reaction product carbon dioxide and waste gas can discharge air by the second subtube；As pressure P in housing<
P0, the first stop valve closes, and combustible gas and waste gas are subsequently sent to onwards transmission in main pipeline by filling region dry filter,
Second temperature sensor and the first temperature sensor detect gas temperature T<T0When, it is believed that deflagration flame extinguishes, and closes second
Tee ball valve, and open the first tee ball valve, combustible gas from main pipeline normal through；
(4) liquid in housing is changed：The 3rd stop valve is opened, waste liquid in housing is discharged, the 3rd stop valve is closed, opens
Open the second stop valve, the liquid of water or other difficult dissolved methanes enters housing, for future use, checks fill area in the 3rd subtube
The service condition in domain, if need to change, check that the reason for accident, on-call maintenance occurs in pipeline.
Brief description of the drawings
Fig. 1 is a kind of multichannel spark arrester schematic diagram designed by the present invention.
In figure：The temperature sensors of 1- first；2- main pipelines；The tee ball valves of 3- first；The subtubes of 4- first；5- second is in charge of
Road；The stop valves of 6- first；The tee ball valves of 7- second；8- second temperature sensors；The subtubes of 9- the 3rd；10- explosion venting valves；11- shells
Body；12- water or other difficult dissolved methane liquid, the stop valves of 13- second；14- inlet ducts；15- outlet conduits；The 3rd section of 16-
Only valve；17- pressure sensors.
Embodiment
A kind of multichannel spark arrester, it is made up of main pipe system, subtube system, housing system；
The main pipe system is made up of the first temperature sensor 1 and main pipeline 2, and the first temperature sensor 1 is arranged at master
On pipeline 2, for determining the temperature of combustible gas.
The subtube system by the first subtube 4, the second subtube 5, the first stop valve 6, second temperature sensor 8,
3rd subtube 9 forms；The one end of first subtube 4 is connected by the first tee ball valve 3 with main pipeline 2, and the other end passes through housing
Duct on 11 is extend into the liquid 12 of water or other difficult dissolved methanes；The one end of second subtube 5 connects the first stop valve 6 and stretched
Enter in air, the other end extend into the top of liquid 12 of water or other difficult dissolved methanes by the duct on housing 11；3rd point
The one end of pipeline 9 is connected by the second tee ball valve 7 with main pipeline 2, the other end by the duct on housing 11 extend into water or its
Above the liquid 12 of its difficult dissolved methane, there is filling region and second between the duct and the second tee ball valve 7 on housing 11
Temperature sensor 8, filling region are formed by the material filling for being capable of absorbing carbon dioxide and water, and second temperature sensor 8 is used for
Determine the temperature of combustible gas, the relative position of the first subtube 4, the second subtube 5 and the 3rd subtube 9 without fixation.
The housing system by explosion venting valve 10, housing 11, water or other difficult dissolved methanes liquid 12, the second stop valve
13rd, inlet duct 14, outlet conduit 15, the 3rd stop valve 16 and five duct compositions.Inlet duct 14 passes through the hole on housing
Road is connected with housing, and the second stop valve 13 is provided with the inlet duct 14, for controlling water or other difficult dissolved methanes
Liquid enters housing, and the outlet conduit 15 is connected by the duct on housing with housing, and the 3rd is provided with outlet conduit 15
Stop valve 16, the waste liquid for absorbing carbon dioxide is discharged into housing for controlling.
Further, pressure sensor 17 is there also is provided on housing system；
Explosion venting valve 10 is arranged at housing side, and when pressure is more than allowable value in housing, explosion venting valve automatically turns on pressure release, to protect
Card housing is not destroyed.
(1) work temperature is set first for the first temperature sensor 10, T0Adiabatic combustion temperature 2323K is arranged to, works as institute
Testing temperature T ＞ T0, illustrate deflagration flame occur, open the first tee ball valve 3, flame will enter housing system；As measured temperature T
＜ T0, air delivering pipeline is normal, and the first tee ball valve 3 is closed, and combustible gas will be accessible to forward pass by main pipeline 2
It is defeated.The necessary condition that second tee ball valve 7 is opened is that the first tee ball valve 3 is opened.
(2) allowable pressure P is set for pressure sensor 170, as pressure P in housing 11>P0, the first stop valve 6 is opened, no
Then 6 it is in normally off.
(3) as T ＞ T0, there is deflagration flame in pipeline, the first tee ball valve 3 and the second tee ball valve 7 are opened, detonation fire
Flame enters the first subtube 4, it is impossible to which into main pipeline 2, pressure sensor 17 detects the pressure in housing 11, when in housing 11
Pressure P>P0, the first stop valve 6 opens, and reaction product carbon dioxide and waste gas can pass through the second subtube 5 and discharge air；Work as shell
Pressure P in body 11<P0, the first stop valve 6 closes, and combustible gas and waste gas are subsequently sent to be responsible for by filling region dry filter
Onwards transmission in road 2, the temperature sensor 1 of second temperature sensor 8 and first detect gas temperature T<T0When, it is believed that detonation fire
Flame extinguish, close the second tee ball valve 7, and open the first tee ball valve 3, combustible gas from main pipeline 2 normal through.
(4) liquid in housing 11 is changed：The 3rd stop valve 16 is opened, waste liquid in housing 11 is discharged, closes the 3rd section
Only valve 16, the second stop valve 13 is opened, the liquid 12 of water or other difficult dissolved methanes enters housing 11, for future use, checks the
The service condition of filling region in three subtubes 9, if need to change, check that the reason for accident, on-call maintenance occurs in pipeline.
Claims (5)
1. a kind of multichannel spark arrester, it is characterised in that be made up of main pipe system, subtube system, housing system；
The main pipe system is made up of the first temperature sensor (1) and main pipeline (2), and the first temperature sensor (1) is arranged at
On main pipeline (2), for determining the temperature of combustible gas；
The subtube system is by the first subtube (4), the second subtube (5), the first stop valve (6), second temperature sensor
(8), the 3rd subtube (9) forms；First subtube (4) one end is connected by the first tee ball valve (3) with main pipeline (2), separately
One end is extend into liquid by the duct on housing (11)；Second subtube (5) one end connects the first stop valve (6) and stretched into greatly
In gas, the other end is extend into above liquid by the duct on housing (11)；3rd subtube (9) one end passes through the second three-way ball
Valve (7) is connected with main pipeline (2), and the other end is extend into above liquid by the duct on housing (11), the hole on housing (11)
There are filling region and second temperature sensor (8) between road and the second tee ball valve (7), filling region is by that can absorb dioxy
The material filling for changing carbon and water forms, and second temperature sensor (8) is used for the temperature for determining combustible gas；
The housing system is by explosion venting valve (10), housing (11), liquid, the second stop valve (13), inlet duct (14), outlet
Road (15), the 3rd stop valve (16) and five duct compositions；Inlet tube (14) road is connected by the duct on housing and housing
Connect, the second stop valve (13) is provided with the inlet duct (14), for controlling water or the liquid of other difficult dissolved methanes to enter
Enter housing；The outlet conduit (15) is connected by the duct on housing with housing, and the 3rd section is provided with outlet conduit (15)
Only valve (16), the waste liquid for absorbing carbon dioxide is discharged into housing for controlling.
2. a kind of multichannel spark arrester according to claim 1, it is characterised in that the liquid is water or other indissoluble solutions
The liquid (12) of methane.
3. a kind of multichannel spark arrester according to claim 1, it is characterised in that pressure is there also is provided on the housing system
Force snesor (17).
4. a kind of multichannel spark arrester according to claim 1, it is characterised in that the explosion venting valve (10) is arranged at housing
Side, when pressure is more than allowable value in housing, explosion venting valve automatically turns on pressure release.
5. the method for work of a kind of multichannel spark arrester according to claims 1 to 4, it is characterised in that including following step
Suddenly：
(1) work temperature is set for the first temperature sensor (1)0, T0Adiabatic combustion temperature 2323K is arranged to, as measured temperature T
＞ T0, illustrate deflagration flame occur, open the first tee ball valve (3), flame will enter housing system；As measured temperature T ＜ T0,
Air delivering pipeline is normal, and the first tee ball valve (3) is closed, combustible gas will by main pipeline (2) accessible onwards transmission,
The necessary condition that second tee ball valve (7) is opened is that the first tee ball valve (3) is opened；
(2) allowable pressure P is set for pressure sensor (17)0, as the interior pressure P of housing (11)>P0, the first stop valve (6) unlatching,
Otherwise (6) are in normally off；
(3) as T ＞ T0, occur deflagration flame in pipeline, the first tee ball valve (3) and the second tee ball valve (7) are opened, detonation fire
Flame enters the first subtube (4), it is impossible into main pipeline (2), the pressure in pressure sensor (17) detection housing (11), when
The interior pressure P of housing (11)>P0, the first stop valve (6) unlatching, reaction product carbon dioxide and waste gas can pass through the second subtube
(5) air is discharged；As the interior pressure P of housing (11)<P0, the first stop valve (6) closing, combustible gas and waste gas are done by filling region
Dry filtering, is subsequently sent to onwards transmission in main pipeline (2), and second temperature sensor (8) and the first temperature sensor (1) detect
Gas temperature T<T0When, it is believed that deflagration flame extinguishes, and closes the second tee ball valve (7), and opens the first tee ball valve (3), can
Combustion gas from main pipeline (2) normal through；
(4) liquid in housing (11) is changed：The 3rd stop valve (16) is opened, the interior waste liquid of housing (11) is discharged, closes the 3rd
The liquid (12) of stop valve (16), the second stop valve of unlatching (13), water or other difficult dissolved methanes enters housing (11), in case after
With the service condition of filling region in the 3rd subtube (9) of inspection, if need to change, check that the reason for accident occurs in pipeline,
On-call maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711972.5A CN107519594B (en) | 2017-08-18 | 2017-08-18 | A kind of multichannel fire arrester and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710711972.5A CN107519594B (en) | 2017-08-18 | 2017-08-18 | A kind of multichannel fire arrester and its working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107519594A true CN107519594A (en) | 2017-12-29 |
| CN107519594B CN107519594B (en) | 2019-11-05 |
Family
ID=60681477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710711972.5A Active CN107519594B (en) | 2017-08-18 | 2017-08-18 | A kind of multichannel fire arrester and its working method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107519594B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953721A (en) * | 2018-07-18 | 2018-12-07 | 濉溪县杰森环保科技有限公司 | A kind of explosion-proof watertight valve of gas pipeline cooling |
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|---|---|---|---|---|
| US4222402A (en) * | 1977-08-15 | 1980-09-16 | Factory Mutual Research Corporation | Dual overlapping fire protection systems and valve |
| SU973871A1 (en) * | 1981-01-30 | 1982-11-15 | Всесоюзный научно-исследовательский институт горноспасательного дела | Method and apparatus for extinguishing underground fires |
| RU2116809C1 (en) * | 1996-05-28 | 1998-08-10 | Воронежское высшее военное авиационное инженерное училище | Liquid fire barrier for low-pressure gases |
| CN2827440Y (en) * | 2005-09-15 | 2006-10-18 | 胜利油田胜利动力机械有限公司 | Dry flame trap used in gas pipe |
| RU2320386C1 (en) * | 2006-07-03 | 2008-03-27 | Саратовское акционерное производственно-коммерческое открытое общество "НЕФТЕМАШ"-САПКОН | Fire barrier |
| CN101176813A (en) * | 2007-12-06 | 2008-05-14 | 淮南矿业(集团)有限责任公司 | Bidirectional flame arrester |
| CN201643490U (en) * | 2010-01-27 | 2010-11-24 | 刘明江 | Biogas Flame Arrester |
| CN202044683U (en) * | 2011-03-23 | 2011-11-23 | 王兴章 | Flame arrester for petroleum gas pipeline |
| CN204723634U (en) * | 2015-06-08 | 2015-10-28 | 许伟 | A kind of spark arrester |
| CN205659293U (en) * | 2016-06-07 | 2016-10-26 | 宾川佳泓养殖专业合作社 | Marsh gas spark arrester |
| CN106422118A (en) * | 2016-09-21 | 2017-02-22 | 北京石油化工学院 | Dual-fire-proof and dual-explosion-proof blocking device and method for gas pipeline |
| CN206063595U (en) * | 2016-07-20 | 2017-04-05 | 河南中龙新源科技有限公司 | A kind of spark arrester |
-
2017
- 2017-08-18 CN CN201710711972.5A patent/CN107519594B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222402A (en) * | 1977-08-15 | 1980-09-16 | Factory Mutual Research Corporation | Dual overlapping fire protection systems and valve |
| SU973871A1 (en) * | 1981-01-30 | 1982-11-15 | Всесоюзный научно-исследовательский институт горноспасательного дела | Method and apparatus for extinguishing underground fires |
| RU2116809C1 (en) * | 1996-05-28 | 1998-08-10 | Воронежское высшее военное авиационное инженерное училище | Liquid fire barrier for low-pressure gases |
| CN2827440Y (en) * | 2005-09-15 | 2006-10-18 | 胜利油田胜利动力机械有限公司 | Dry flame trap used in gas pipe |
| RU2320386C1 (en) * | 2006-07-03 | 2008-03-27 | Саратовское акционерное производственно-коммерческое открытое общество "НЕФТЕМАШ"-САПКОН | Fire barrier |
| CN101176813A (en) * | 2007-12-06 | 2008-05-14 | 淮南矿业(集团)有限责任公司 | Bidirectional flame arrester |
| CN201643490U (en) * | 2010-01-27 | 2010-11-24 | 刘明江 | Biogas Flame Arrester |
| CN202044683U (en) * | 2011-03-23 | 2011-11-23 | 王兴章 | Flame arrester for petroleum gas pipeline |
| CN204723634U (en) * | 2015-06-08 | 2015-10-28 | 许伟 | A kind of spark arrester |
| CN205659293U (en) * | 2016-06-07 | 2016-10-26 | 宾川佳泓养殖专业合作社 | Marsh gas spark arrester |
| CN206063595U (en) * | 2016-07-20 | 2017-04-05 | 河南中龙新源科技有限公司 | A kind of spark arrester |
| CN106422118A (en) * | 2016-09-21 | 2017-02-22 | 北京石油化工学院 | Dual-fire-proof and dual-explosion-proof blocking device and method for gas pipeline |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953721A (en) * | 2018-07-18 | 2018-12-07 | 濉溪县杰森环保科技有限公司 | A kind of explosion-proof watertight valve of gas pipeline cooling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107519594B (en) | 2019-11-05 |
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