CN105582635B - Visit fire tube temperature-sensitive self-starting extinguishing device selector valve - Google Patents
Visit fire tube temperature-sensitive self-starting extinguishing device selector valve Download PDFInfo
- Publication number
- CN105582635B CN105582635B CN201610163257.8A CN201610163257A CN105582635B CN 105582635 B CN105582635 B CN 105582635B CN 201610163257 A CN201610163257 A CN 201610163257A CN 105582635 B CN105582635 B CN 105582635B
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- China
- Prior art keywords
- piston
- fire tube
- valve body
- inner cavity
- compression spring
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- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
Abstract
The invention discloses a kind of spy fire tube temperature-sensitive self-starting extinguishing device selector valves, include mainly swivel nut, valve body, piston, piston compression spring, visit fire tube flap set, visit fire tube flap set compression spring, plug screw.It is characterized in that：The swivel nut is screwed onto on valve body；Piston, piston compression spring are installed in the valve body；It is equipped in the piston and visits fire tube flap set, visits fire tube flap set compression spring and plug screw.The effect for visiting fire tube temperature-sensitive self-starting extinguishing device selector valve is to control the flow direction and release extinguishing chemical of extinguishing chemical; it is mainly used in while the combination of several guard plots being protected to distribute fire extinguishing system; when fire occurs for a certain guard plot, opens the guard plot selector valve spraying fire-extinguishing agent and implement fire extinguishing.
Description
Technical field
The present invention relates to a kind of selector valve more particularly to a kind of spy fire tube temperature-sensitive self-starting extinguishing device selector valves, are peaces
Mounted in visiting on fire tube temperature-sensitive self-starting extinguishing device, for controlling a kind of valve of extinguishing chemical flow direction and release extinguishing chemical.
Background technology
Currently, fire tube temperature-sensitive self-starting fire extinguishing is visited in installation in the installations and facilities such as power distribution station, electrical cabinet, mobile communication base station
Device has attracted much attention.But the extinguishing device much used in the prior art can only all protect a guard plot or one sets
It is standby, does not realize using suitable spy fire tube temperature-sensitive self-starting extinguishing device selector valve while several guard plots or more are set
Standby protection causes the repetition configuration of extinguishing device and the waste of extinguishing chemical, extra extinguishing chemical also to easily cause environmental pollution.
Invention content
It is an object of the present invention to provide a kind of structure novel, good appearance, performance stabilization, spy fire tube temperature-sensitives safe to use certainly
Start extinguishing device selector valve, realizes that set of device protects multiple guard plots or equipment simultaneously.
Technical scheme is as follows：
A kind of spy fire tube temperature-sensitive self-starting extinguishing device selector valve, including：Swivel nut, piston, plug screw, visits fire tube valve at valve body
Valve covers compression spring, visits fire tube flap set, piston compression spring.
Shown valve body is the hollow inner cylinder inner cavity with left and right perforation, on the outer wall of valve body radially from left to right
It is spaced apart to be equipped with and visits fire tube import A1With release pipe import B1；The left side diameter of body cavity is more than the right diameter, forms convex
Platform；Inner wall is equipped with groove recessed radially inward on the right of valve body；
The piston is installed in the inner cavity of valve body, the inner cavity of valve body is divided into two spaces, the left lumen of valve body is set
For A chambers, the right inner cavity is set as B chambers；The piston is three sections of multi-diameter shafts, piston and valve body coaxial line；The piston left end section portion
The outer diameter at maximum gauge is divided to be adapted with the internal diameter size on the body cavity left side；The piston right end section part is most
Outer diameter at minor diameter is adapted with the internal diameter size on the right of the body cavity；The outer diameter of the piston intermediate stage
Size is between the section section diameter of left and right end；
The swivel nut, which is spirally connected, is fixed on the left end opening of valve body, and swivel nut, which is provided with, visits tube exit A2, visit tube exit A2
It is connected to the inner cavity A of the valve body；The right end of the valve body is equipped with release pipe and exports B2, release pipe outlet B2With the valve body
Inner cavity B is connected to；
The piston is set there are one inner cavity, is located at the left end of piston, visits fire tube flap set in the inner cavity of piston；Institute
It is three sections of multi-diameter shafts to state and visit fire tube flap set, visits fire tube flap set and piston coaxial line；Spy fire tube flap set left end section portion
The outer diameter at maximum gauge is divided to be adapted with the internal diameter size of piston cavity；It visits fire tube flap set intermediate stage and is equipped with diameter
To aperture, piston cavity is connected to fire tube flap set inner cavity is visited；The spy fire tube flap set right end section section diameter is minimum；
The fire tube flap set compression spring of visiting is set to the inside for visiting fire tube flap set, and plug screw, which is spirally connected, is fixed on the left end of piston
And it compresses and visits fire tube flap set compression spring；
The piston compression spring is set to the outside of piston intermediate stage, and left end is fixed on the shaft shoulder of piston, right end branch
Support the positioning convex platform in valve body；
Further, inner wall is equipped with groove recessed radially inward on the right of the valve body, and groove location corresponds to release
Pipe import B1.
Further, piston, plug screw, spy fire tube flap set compression spring and spy fire tube flap set collectively form a check valve.
Further, the close right end position of the piston intermediate stage is equipped with radial through-hole, the through-hole and piston counterbore
Chamber communicates.
Further, the plug screw is equipped with axially extending bore, will visit fire tube flap set inner cavity and is connected to the left side A chambers of valve body.
Further, the inner cavity of the piston, right end are small cylindrical opening, piston cavity hole and small cylindrical opening conical bore mistake
It crosses.
Further, extinguishing chemical in fire tube is visited in the circulation of A intracavitary, and the circulation of B intracavitary discharges extinguishing chemical in pipe；When A chambers have pressure,
Pressure P1Under the action of, due to the difference in areas of piston left and right ends, make piston left end directed force F1Consistently greater than right end active force
F2, piston moves right, and seals up B chambers outlet B2；When A chamber pressure releases, piston is transported to the left under the action of piston compression spring spring force
It is dynamic, it opens B chambers and exports B2。
The effect of piston is the flow direction of extinguishing chemical in control release pipe.
The effect for visiting fire tube flap set is the flow direction that extinguishing chemical in fire tube is visited in control.
The technique effect of the present invention is as follows：
Since the present invention visits fire tube temperature-sensitive self-starting extinguishing device selector valve, effect is to control the flow direction of extinguishing chemical and release
Put extinguishing chemical.Valve body is divided into two chambers of A, B thus, the circulation of extinguishing chemical in fire tube and release pipe is visited in control respectively.
Again since the present invention visits fire tube temperature-sensitive self-starting extinguishing device selector valve there are four interface, be separately connected fire trace tube and
The inlet and outlet for discharging pipe by visiting the movement of fire tube flap set and piston, while being realized to visiting extinguishing chemical in fire tube and release pipe
The control of flow direction.
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
Description of the drawings
Fig. 1 is to visit fire tube temperature-sensitive self-starting extinguishing device selector valve front view；
Fig. 2 is Fig. 1 left views；
Wherein：Fire tube flap set compression spring, 6 spy fire tube flap sets, 7 work are visited including 1 swivel nut, 2 valve bodies, 3 pistons, 4 plug screws, 5
Fill in compression spring.
A1、A2Respectively fire trace tube inlet and outlet, B1、B2Respectively discharge pipe inlet and outlet.
Specific implementation mode
The terms such as cited "left", "right" " centre " in the present invention are merely convenient to being illustrated for narration, rather than to limit
The fixed enforceable range of the present invention, relativeness is altered or modified, in the case where changing technology contents without essence, when being also considered as this
Invent enforceable scope.
As depicted in figs. 1 and 2, a kind of spy fire tube temperature-sensitive self-starting extinguishing device selector valve, including swivel nut 1, valve body 2, work
Plug 3, plug screw 4 visit fire tube flap set compression spring 5, visit fire tube flap set 6, piston compression spring 7.Shown valve body 2 is with left and right perforation
Hollow inner cylinder inner cavity radially is spaced apart to be equipped on the outer wall of valve body 2 and visits fire tube import A from left to right1It is managed with release
Import B1；It visits fire tube import A1 and is connect with the spy fire tube that extinguishing device is connected, what release pipe import B1 was connected with extinguishing device releases
Put pipe connection；The left side diameter of 2 inner cavity of valve body is more than the right diameter, forms positioning convex platform；2 the right inner wall of valve body is equipped with along diameter
To the groove being inwardly recessed；
The piston 3 is installed in the inner cavity of valve body 2, the inner cavity of valve body 2 is divided into two spaces, in the left side of valve body 2
Chamber is set as A chambers, and the right inner cavity is set as B chambers；The piston 3 is three sections of multi-diameter shafts, piston 3 and 2 coaxial line of valve body；The piston 3
Outer diameter at the maximum gauge of left end section part is adapted with the internal diameter size on the 2 inner cavity left side of the valve body；The piston 3 is right
Outer diameter at the minimum diameter of end section part is adapted with the internal diameter size on the right of 2 inner cavity of the valve body；Among the piston 3
The outer diameter of section part is between the section section diameter of left and right end；
The swivel nut 1, which is spirally connected, is fixed on the left end opening of valve body 2, and swivel nut 1, which is provided with, visits tube exit A2, visit fire tube and go out
Mouth A2It is connected to the inner cavity A of the valve body 2；The right end of the valve body 2 is equipped with release pipe and exports B2, release pipe outlet B2With it is described
The inner cavity B of valve body 2 is connected to；
The piston 3 is set there are one inner cavity, is located at the left end of piston 3, visits the inner cavity that fire tube flap set 6 is mounted on piston 3
In；The spy fire tube flap set 6 is three sections of multi-diameter shafts, visits fire tube flap set 6 and 3 coaxial line of piston；The spy fire tube flap set 6
Outer diameter at the maximum gauge of left end section part is adapted with the internal diameter size of 3 inner cavity of piston；It visits fire tube flap and covers 6 interludes
Part is equipped with radial hole, and the inner cavity of piston 3 is connected to 6 inner cavities of fire tube flap set are visited；The spy fire tube flap covers 6 right end sections
Section diameter is minimum；
The fire tube flap set compression spring 5 of visiting is set to the inside for visiting fire tube flap set 6, and plug screw 4, which is spirally connected, is fixed on piston 3
Left end simultaneously compresses spy fire tube flap set compression spring 5；
The piston compression spring 7 is set to the outside of 3 intermediate stage of piston, and left end is fixed on the shaft shoulder of piston 3, right end
It is supported in the positioning convex platform of valve body 2；
2 the right inner wall of the valve body is equipped with groove recessed radially inward, and groove location corresponds to release pipe import
B1。
The piston 3, plug screw 4, spy fire tube flap set compression spring 5 and spy fire tube flap set 6 collectively form a check valve, only
Extinguishing chemical is allowed to be circulated from A1 to A2.
The close right end position of 3 intermediate stage of the piston is equipped with radial through-hole, the through-hole and 3 counterbore chamber phase of piston
It is logical.
The plug screw 4 is equipped with axially extending bore, will visit 6 inner cavities of fire tube flap set and is connected to the left side A chambers of valve body 2.
The inner cavity of the piston 3, right end are small cylindrical opening, 3 lumen orifice of piston and small cylindrical opening conical bore transition.
Extinguishing chemical in fire tube is visited in the circulation of A intracavitary, and the circulation of B intracavitary discharges extinguishing chemical in pipe；When A chambers have pressure, in pressure P1
Under the action of, due to the difference in areas of 3 left and right ends of piston, make 3 left end directed force F of piston1Consistently greater than right end directed force F2, living
Plug 3 moves right, and seals up B chambers outlet B2；When A chamber pressure releases, piston 3 is transported to the left under the action of piston 7 spring force of compression spring
It is dynamic, it opens B chambers and exports B2。
The effect of piston 3 is the flow direction of extinguishing chemical in control release pipe.
The effect for visiting fire tube flap set 6 is the flow direction that extinguishing chemical in fire tube is visited in control.
It visits fire tube temperature-sensitive self-starting extinguishing device selector valve and is usually visiting extinguishing chemical pressure P in fire tube1Under the action of, piston
3 seal up B chambers outlet B always2, valve is closed.When a fire, fire tube temperature-sensitive self-starting is visited in affiliated guard plot
Extinguishing device selector valve A2The connect spy fire tube temperature-sensitive explosion in outlet, A2Port opening visits extinguishing chemical release in fire tube, fire extinguishing dress
Startup is set, extinguishing chemical is through discharging pipe by B1Import flows in valve body 2, and the A intracavitary pressure P of valve body 2 is caused due to visiting fire tube explosion1
Rapid decrease, piston 3 move downward under the action of piston 7 spring force of compression spring, B2Port opening discharges extinguishing chemical, discharges in pipe
Extinguishing chemical flows to guard plot and implements fire extinguishing.While extinguishing device is opened, release pipe of the extinguishing chemical through unicom, which flows to, other not to be sent out
The affiliated temperature-sensitive self-starting extinguishing device selector valve B1 imports in guard plot for calamity of lighting a fire, due to A2The connect spy fire tube in outlet is not quick-fried
It is broken, even if A1Import pressure release, in the A intracavitary pressure P of valve body 21Under the active force for covering compression spring 5 with spy fire tube flap, fire tube flap is visited
Set 4 seals up A1Import keeps A intracavitary pressure P1It is constant, due to the difference in areas of 3 left and right ends of piston, 3 left end of piston is made to act on
Power F1Consistently greater than right end directed force F2, piston 3 moves right, and seals up B chambers outlet B2, ensure temperature-sensitive self-starting extinguishing device
Selector valve is closed.
The effect for visiting fire tube temperature-sensitive self-starting extinguishing device selector valve is to control the flow direction and release extinguishing chemical of extinguishing chemical, main
To be applied to while the combination of several guard plots being protected to distribute fire extinguishing system, when fire occurs for a certain guard plot, it is anti-to open this
It protects area's selector valve spraying fire-extinguishing agent and implements fire extinguishing, realize that set of device protects multiple guard plots or equipment simultaneously, with reference to guarantor
Two guard plots are protected to illustrate：
When a set of extinguishing device protects two guard plots simultaneously, a spy fire tube selector valve should be arranged in each guard plot.
The import A1 of two selector valves visits fire tube by device and is connected with extinguishing device, i.e. guard plot one and the device of guard plot two is visited
Fire tube is interconnected；The two zone devices release pipe being similarly connected with import B1 is also to be interconnected.Two selector valves
Outlet A2, B2 then respectively in the guard plot of each self-shield spy fire tube, release pipe connect, between the areas Liang Ge without connection pass
System.Citing：When one fire of guard plot, fire tube temperature-sensitive explosion, the selector valve A in guard plot one are visited in the guard plot in guard plot one
Intracavitary extinguishing chemical discharges pressure release by cut, at the same the device of A1 connections visit fire tube (visiting fire tube containing two zone devices in communication) and
The extinguishing chemical of intracavitary overcomes the spring force of spring 5 to push flap set 6 under the action of pressure on the extinguishing device container value of connection
It moves downward, visiting fire tube cut by device through A chambers discharges pressure release, and extinguishing device container value is opened, and extinguishing chemical flow direction is attached thereto
Device release pipe, protect zone devices to discharge pipes to communicate, therefore separately flow into the B intracavitary of two guard plot selector valves because of two.This
When due to one selector valve A chamber pressure releases of guard plot after, piston 3 moves downward under the spring-force driven dual of piston compression spring 7, B2 outlet open
It opens, extinguishing chemical flows to the release pipe in guard plot one, by implementing fire extinguishing in nozzles spray to guard plot one.And the choosing of guard plot two
The extinguishing chemical of valve A intracavitary is selected under the spring-force driven dual of pressure and spring 5, flap set 6 is pushed to seal up the axial direction of 3 inner cavity of piston
Hole, piston 3 remain at right end under the directed force F 1 of pressure P1, seal up outlet B2.Therefore, extinguishing chemical will not be sprayed onto
In guard plot two.
It should be appreciated that the detailed description carried out above to technical scheme of the present invention by preferred embodiment is schematical
And not restrictive.Those skilled in the art can be to recorded in embodiment on the basis of reading description of the invention
Technical solution modify or equivalent replacement of some of the technical features, and these modifications or replacements, not
So that the essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should be wanted by the right of the present invention
It asks and is covered.
Claims (7)
1. a kind of spy fire tube temperature-sensitive self-starting extinguishing device selector valve, it is characterised in that：Including swivel nut (1), valve body (2), piston
(3), plug screw (4), spy fire tube flap set compression spring (5), spy fire tube flap set (6), piston compression spring (7)；
Shown valve body (2) is the hollow inner cylinder inner cavity with left and right perforation, radially by left-hand on the outer wall of valve body (2)
Right septum, which offers, visits fire tube import A1 and release pipe import B1；The left side diameter of valve body (2) inner cavity is more than the right diameter, is formed
Positioning convex platform；Inner wall is equipped with groove recessed radially inward on the right of valve body (2)；
The piston (3) is installed in the inner cavity of valve body (2), and the inner cavity of valve body (2) is divided into two spaces, a left side for valve body (2)
Side inner cavity is set as A chambers, and the right inner cavity is set as B chambers；The piston (3) is three sections of multi-diameter shafts, piston (3) and valve body (2) coaxial line；
Outer diameter and the internal diameter size on the valve body (2) inner cavity left side at the maximum gauge of piston (3) the left end section part are mutually fitted
Match；Outer diameter at the minimum diameter of piston (3) the right end section part and the internal diameter size phase on the right of the valve body (2) inner cavity
Adaptation；The outer diameter of piston (3) intermediate stage is between the section section diameter of left and right end；
The swivel nut (1), which is spirally connected, is fixed on the left end opening of valve body (2), and swivel nut (1), which is provided with, visits tube exit A2, visits fire tube
Outlet A2 is connected to the inner cavity A of the valve body (2)；The right end of the valve body (2) is equipped with release pipe and exports B2, and release pipe exports B2
It is connected to the inner cavity B of the valve body (2)；
The piston (3) sets there are one inner cavity, is located at the left end of piston (3), visits fire tube flap set (6) and is mounted on piston (3)
In inner cavity；The spy fire tube flap set (6) is three sections of multi-diameter shafts, visits fire tube flap set (6) and piston (3) coaxial line；The spy
Outer diameter at the maximum gauge of fire tube flap set (6) left end section part is adapted with the internal diameter size of piston (3) inner cavity；Visit fire
Pipe valve valve set (6) intermediate stage is equipped with radial hole, and piston (3) inner cavity is connected to fire tube flap set (6) inner cavity is visited；It is described
It is minimum to visit fire tube flap set (6) right end section section diameter；
The fire tube flap set compression spring (5) of visiting is set to the inside for visiting fire tube flap set (6), and plug screw (4), which is spirally connected, is fixed on piston
(3) left end simultaneously compresses and visits fire tube flap set compression spring (5)；
The piston compression spring (7) is set to the outside of piston (3) intermediate stage, and left end is fixed on the shaft shoulder of piston (3), right
End is supported in the positioning convex platform of valve body (2)；
2. spy fire tube temperature-sensitive self-starting extinguishing device selector valve according to claim 1, it is characterised in that：The valve body
(2) the right inner wall is equipped with groove recessed radially inward, and groove location corresponds to release pipe import B1.
3. spy fire tube temperature-sensitive self-starting extinguishing device selector valve according to claim 1, it is characterised in that：Piston (3), spiral shell
Plug (4), spy fire tube flap set compression spring (5) and spy fire tube flap set (6) collectively form a check valve.
4. spy fire tube temperature-sensitive self-starting extinguishing device selector valve according to claim 1, it is characterised in that：The piston
(3) the close right end position of intermediate stage, is equipped with radial through-hole, which communicates with piston (3) counterbore chamber.
5. spy fire tube temperature-sensitive self-starting extinguishing device selector valve according to claim 1, it is characterised in that：The plug screw
(4) it is equipped with axially extending bore, fire tube flap set (6) inner cavity will be visited and be connected to the left side A chambers of valve body (2).
6. spy fire tube temperature-sensitive self-starting extinguishing device selector valve according to claim 1, it is characterised in that：The piston
(3) inner cavity, right end are small cylindrical opening, piston (3) lumen orifice and small cylindrical opening conical bore transition.
7. spy fire tube temperature-sensitive self-starting extinguishing device selector valve according to claim 1, it is characterised in that：A intracavitary circulates
Visit extinguishing chemical in fire tube, the interior extinguishing chemical of B intracavitary circulation release pipe；When A chambers have pressure, under the action of pressure P1, due to piston
(3) difference in areas of left and right ends, makes piston (3) left end directed force F 1 be consistently greater than right end directed force F 2, and piston (3) is transported to the right
It is dynamic, seal up B chambers outlet B2；When A chamber pressure releases, piston (3) moves downward under the action of piston compression spring (7) spring force, opens
Open B chambers outlet B2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610163257.8A CN105582635B (en) | 2016-03-22 | 2016-03-22 | Visit fire tube temperature-sensitive self-starting extinguishing device selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610163257.8A CN105582635B (en) | 2016-03-22 | 2016-03-22 | Visit fire tube temperature-sensitive self-starting extinguishing device selector valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105582635A CN105582635A (en) | 2016-05-18 |
| CN105582635B true CN105582635B (en) | 2018-10-02 |
Family
ID=55922769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610163257.8A Active CN105582635B (en) | 2016-03-22 | 2016-03-22 | Visit fire tube temperature-sensitive self-starting extinguishing device selector valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105582635B (en) |
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| CN202371273U (en) * | 2011-12-12 | 2012-08-08 | 西安核设备有限公司 | Gas fire extinction selector valve |
| CN203730865U (en) * | 2014-03-05 | 2014-07-23 | 天广消防股份有限公司 | Container valve of indirect-type fire-detect-tube fire extinguishing unit |
| CN203750090U (en) * | 2013-12-30 | 2014-08-06 | 青岛中阳消防科技有限公司 | Automatic fire extinguishing device for two stages of fire detection pipe |
| CN204485161U (en) * | 2015-01-28 | 2015-07-22 | 江苏锡宜消防工程有限公司 | Fire trace tube formula Automatic spark detection extinguishing device |
| CN105169584A (en) * | 2015-09-30 | 2015-12-23 | 公安部天津消防研究所 | Multistage response type automatic extinguishing device and use method |
| CN105276269A (en) * | 2015-11-02 | 2016-01-27 | 艾赛孚消防科技（天津）有限公司 | Selector valve used for inert gas fire extinguishing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3763184B2 (en) * | 1997-05-27 | 2006-04-05 | いすゞ自動車株式会社 | Switching valve |
| KR101397922B1 (en) * | 2013-01-23 | 2014-05-27 | 주식회사 건국이엔아이 | Fire extinguisher with fire detecition tube |
| EP2959946B1 (en) * | 2014-06-27 | 2019-04-24 | Fogmaker International AB | Fire extinguishing system |
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2016
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202371273U (en) * | 2011-12-12 | 2012-08-08 | 西安核设备有限公司 | Gas fire extinction selector valve |
| CN203750090U (en) * | 2013-12-30 | 2014-08-06 | 青岛中阳消防科技有限公司 | Automatic fire extinguishing device for two stages of fire detection pipe |
| CN203730865U (en) * | 2014-03-05 | 2014-07-23 | 天广消防股份有限公司 | Container valve of indirect-type fire-detect-tube fire extinguishing unit |
| CN204485161U (en) * | 2015-01-28 | 2015-07-22 | 江苏锡宜消防工程有限公司 | Fire trace tube formula Automatic spark detection extinguishing device |
| CN105169584A (en) * | 2015-09-30 | 2015-12-23 | 公安部天津消防研究所 | Multistage response type automatic extinguishing device and use method |
| CN105276269A (en) * | 2015-11-02 | 2016-01-27 | 艾赛孚消防科技（天津）有限公司 | Selector valve used for inert gas fire extinguishing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105582635A (en) | 2016-05-18 |
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