CN208823844U - Extinguishing device and fire extinguishing system - Google Patents
Extinguishing device and fire extinguishing system Download PDFInfo
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- CN208823844U CN208823844U CN201821085987.1U CN201821085987U CN208823844U CN 208823844 U CN208823844 U CN 208823844U CN 201821085987 U CN201821085987 U CN 201821085987U CN 208823844 U CN208823844 U CN 208823844U
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Abstract
The utility model provides a kind of extinguishing device and fire extinguishing system.Wherein, extinguishing device includes: matrix；The accommodating chamber for accommodating extinguishing chemical is formed in described matrix, the extinguishing chemical is for putting out a fire；Described matrix outer surface is additionally provided with guide portion, and the guide portion is inflammable part, and the guide portion is for destroying described matrix, to discharge the extinguishing chemical.The utility model also provides a kind of fire extinguishing system, including electrical equipment and extinguishing device, and the electrical equipment includes cabinet, and the extinguishing device is arranged in the cabinet.Extinguishing device provided by the utility model and fire extinguishing system, extinguishing device can be placed in easily ignitable position in advance, or be thrown to fire location, guide portion can be lighted by fire, then matrix is destroyed, the intracorporal extinguishing chemical of base is released, to realize fire extinguishing.The extinguishing device is easy to operate, can be with quick release extinguishing chemical.
Description
Technical field
The utility model relates to production safety technical field more particularly to a kind of extinguishing device and fire extinguishing systems.
Background technique
It in production scene, generally requires using electrical equipment, a large amount of heat can be generated in electrical equipment use process, hold
It is easy to cause fire, influence safety.
In the prior art, production scene generally can spray fire extinguisher and go out when finding fire equipped with fire extinguisher
Fire.Fire extinguisher includes tank body and handle, and high-pressure extinction agent is provided in tank body, and the top of the tank of fire extinguisher is provided with nozzle,
Lead sealing and safety plug are set at nozzle；Handle connects on tank body, can open nozzle.It was found that first lead sealing can be removed when fire
It goes, extracts safety plug, nozzle is then directed at point of origin, then press handle, spray extinguishing chemical.
But in the prior art, fire extinguisher is complicated for operation, inconvenient for use, is easy delay fire extinguishing opportunity.
Utility model content
The utility model provides a kind of extinguishing device and fire extinguishing system, with overcome in the prior art fire extinguisher it is complicated for operation
Problem.
The utility model provides a kind of extinguishing device, comprising: matrix；It is formed in described matrix for accommodating extinguishing chemical
Accommodating chamber, the extinguishing chemical is for putting out a fire；Described matrix outer surface is additionally provided with guide portion, and the guide portion is inflammable part, institute
Guide portion is stated for destroying described matrix, to discharge the extinguishing chemical.
Extinguishing device as described above, wherein the quantity of the guide portion is multiple, multiple guide portion interval settings
On the matrix.
Extinguishing device as described above, wherein the guide portion is wound around outside described matrix.
Extinguishing device as described above, wherein described matrix includes the first matrix and is set in outside first matrix
Second matrix；The guide portion is arranged outside first matrix.
First intrinsic silicon is formed with the accommodating chamber；It is formed between first matrix and second matrix
Housing region is filled with first gas in the housing region.
Extinguishing device as described above, wherein the first gas includes carbon dioxide.
Extinguishing device as described above, wherein first matrix and second matrix are all sphere.
Extinguishing device as described above, wherein first matrix and second matrix are all cuboid.
Extinguishing device as described above, wherein the extinguishing chemical includes dry powder fire extinguishing agent.
The utility model also provides a kind of fire extinguishing system, including electrical equipment and extinguishing device as described above, described
Electrical equipment includes cabinet, and the extinguishing device is arranged in the cabinet.
Fire extinguishing system as described above, wherein the quantity of the extinguishing device be it is multiple, multiple extinguishing devices are along pre-
The setting of set direction interval.
Extinguishing device provided by the utility model and fire extinguishing system, by the way that matrix is arranged；It is formed in matrix for accommodating
The accommodating chamber of extinguishing chemical, extinguishing chemical is for putting out a fire；Outer surface of matrix is additionally provided with guide portion, and guide portion is inflammable part, guide portion
For destroying matrix, to discharge extinguishing chemical.Extinguishing device can be placed in easily ignitable position in advance, or be thrown to
Fiery position, guide portion can be lighted by fire, then destroy matrix, and the intracorporal extinguishing chemical of base is released, thus real
Now put out a fire.The extinguishing device is easy to operate, can be with quick release extinguishing chemical.
Detailed description of the invention
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, it should be appreciated that herein
Described specific embodiment is only used for describing and explaining the present invention, and the utility model is not limited to following specific realities
Apply mode.
Fig. 1 is the structural schematic diagram of the utility model extinguishing device embodiment one；
Fig. 2 is the structural schematic diagram of the utility model extinguishing device embodiment two；
Fig. 3 is the structural schematic diagram of the utility model extinguishing device embodiment three；
Fig. 4 is the structural schematic diagram of the utility model extinguishing device example IV；
Fig. 5 is the structural schematic diagram of the utility model extinguishing device embodiment five；
Fig. 6 is the structural schematic diagram of matrix in figure.
Description of symbols:
1: matrix；
11: the first matrixes；
12: the second matrixes；
2: extinguishing chemical；
3: guide portion.
Specific embodiment
It in production scene, generally requires using electrical equipment, a large amount of heat can be generated in electrical equipment use process, hold
It is easy to cause fire, influence safety.
In the prior art, production scene generally can spray fire extinguisher and go out when finding fire equipped with fire extinguisher
Fire.Fire extinguisher includes tank body and handle, and high-pressure extinction agent is provided in tank body, and the top of the tank of fire extinguisher is provided with nozzle,
Lead sealing and safety plug are set at nozzle；Handle connects on tank body, can open nozzle.It was found that first lead sealing can be removed when fire
It goes, extracts safety plug, nozzle is then directed at point of origin, then press handle, spray extinguishing chemical.
But in the prior art, fire extinguisher is complicated for operation, inconvenient for use, is easy delay fire extinguishing opportunity.
To solve the above-mentioned problems, the utility model embodiment provides a kind of extinguishing device and fire extinguishing system, is gone out with improving
The operating comfort of fiery device.
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, it should be appreciated that herein
Described specific embodiment is only used for describing and explaining the present invention, and the utility model is not limited to following specific realities
Apply mode.
Embodiment one
Fig. 1 is the structural schematic diagram of the utility model extinguishing device embodiment one.Incorporated by reference to Fig. 1, the present embodiment provides one
Kind extinguishing device, comprising: matrix 1；The accommodating chamber for accommodating extinguishing chemical 2 is formed in matrix 1, extinguishing chemical 2 is for putting out a fire；Base
1 outer surface of body is additionally provided with guide portion 3, and guide portion 3 is inflammable part, and guide portion 3 is for destroying matrix 1, to discharge extinguishing chemical
2。
Specifically, extinguishing device can be used for Conventional compact fire or kindling initial stage, may include having extinguishing chemical 2 with reality
Now put out a fire.Extinguishing device may include matrix 1 and the guide portion 3 that is arranged in outside matrix 1, and guide portion 3 can destroy matrix 1, make
The extinguishing chemical 2 obtained in matrix 1 releases, and achievees the effect that extinguish fire.
Matrix 1 can have accommodating chamber as the main component for holding extinguishing chemical 2, and the shaped volumes of accommodating chamber can be with
It is configured, is not specifically limited herein according to the actual situation.The material of matrix 1 can there are many, can be hard shell,
Or the film like structures that can be deformed under force, for example, matrix 1 can be rubber or plastic foil, in
Portion is filled with extinguishing chemical 2, and after matrix 1 is ignited or ignited to guide portion 3, the rupture of matrix 1 or disappearance, internal extinguishing chemical 2 can
To release, achieve the purpose that fire extinguishing.
Guide portion 3 is arranged outside matrix, and can be used for igniting or igniting matrix 1, and guide portion 3 can be inflammable part,
Burning point is lower, to can be lighted by flame or fire bring high temperature in fire, to heat to matrix 1, so that matrix
1 rupture disappears, and discharges extinguishing chemical 2 to put out a fire.For example, guide portion 3 can be cotton thread or wooden structures etc..Matrix 1 can be
The film material that can be burned or melt can be with spontaneous combustion when guide portion 3 experiences the high temperature of flame, and heated substrate
1, so that matrix 1 destroys in time, so that extinguishing chemical 2 can discharge in time, fast implement fire extinguishing.
Extinguishing chemical 2 can be extinguishing chemical common in the art.Such as water, fire foam, dry powder fire extinguishing agent and two
Carbonoxide etc..Water is that most wide, most cheap extinguishing chemical is distributed in nature.Due to water specific heat with higher (4.186J/g DEG C)
It is hot (2260J/g) with latentization, therefore its cooling effect is fairly obvious in fire extinguishing, extinguishing mechanism relies primarily on cooling and asphyxia
Effect is put out a fire.The major defect of water is the fighting for generating water damage and polluting, cannot be used for charging equipment fire.
Fire foam is by extinguishing chemical miscible with water, using the method generation foam mechanically or chemically reacted.One
As be made of chemical substance, protein hydrolysate or aqueous solution by surfactant and other additives.The fire extinguishing of fire foam
Mechanism mainly cooling, smothering action, i.e., form a continuous froth bed on the comburant surface of kindling, pass through foam sheet
Body and the mixed liquor being precipitated cool down comburant surface, and by the covering effect of froth bed make comburant and oxygen every
It puts out a fire absolutely.The major defect of fire foam is water damage and pollution, the fighting that cannot be used for electrification fire.
Dry powder fire extinguishing agent is a kind of readily flowed micro-solid powder, by the inorganic salts with fire extinguishing effectiveness and on a small quantity
Additive through drying, crush, mix micro-solid powder constituent.Mainly Chemical Inhibition and smothering action fire extinguishing.It removes
Outside the dedicated dry powder fire extinguishing agent of fighting metallic fires, common dry powder fire extinguishing agent is generally divided into BC dry powder fire extinguishing agent and ABC dry powder goes out
Fiery agent two major classes, such as sodium bicarbonate powder, modified sodium salt dry powder, ammonium dihydrogen phosphate dry powder, diammonium hydrogen phosphate dry powder.Dry powder goes out
The major defect of fiery agent is to easily cause pollution for precision instrument fire.
Carbon dioxide is a kind of gas extinguishing agent, in nature exist it is also relatively broad, price is low, acquisition is easy.It is existing
Carbon dioxide extinguishing agent is all biggish gas extinguishing agent of usage amount in fire extinguisher and fire extinguishing system at home.It puts out a fire main
By smothering action and part cooling effect.When fire extinguishing, carbon dioxide gas can exclude air and be enclosed in burning objects
Surface is distributed in more closed space, reduce combustible around or protective zone in oxygen concentration, generate smothering action and
Fire extinguishing.When carbon dioxide is sprayed from storage container simultaneously, it can be gasificated into gas rapidly, played from surrounding absorption heat cooling
Effect.Major defect is that fire extinguishing needs concentration high, and personnel can be made to be poisoned by asphyxia.Specifically used extinguishing chemical can be according to going out
The use occasion of fiery device is configured.
In the present embodiment, for putting out a fire to electrical equipment, extinguishing chemical 2 includes dry powder fire extinguishing agent, will not be destroyed electrical
Equipment.
Extinguishing device can be placed in easily ignitable position in advance, or be thrown to fire location, and guide portion 3 can be by
Fire is lighted, and be may then pass through the modes such as fusing, burning or explosion and is destroyed matrix 1, and the extinguishing chemical 2 in matrix 1 is released
It releases, to realize fire extinguishing.The extinguishing device is easy to operate, can be with quick release extinguishing chemical 2.
Extinguishing device provided in this embodiment, by the way that matrix is arranged；The receiving for accommodating extinguishing chemical is formed in matrix
Chamber, extinguishing chemical is for putting out a fire；Outer surface of matrix is additionally provided with guide portion, and guide portion is inflammable part, and guide portion is used to destroy matrix,
To discharge extinguishing chemical.Extinguishing device can be placed in easily ignitable position in advance, or be thrown to fire location, guide portion
It can be lighted by fire, then destroy matrix, the intracorporal extinguishing chemical of base is released, to realize fire extinguishing.The fire extinguishing
Device is easy to operate, can be with quick release extinguishing chemical.
Embodiment two
Fig. 2 is the structural schematic diagram of the utility model extinguishing device embodiment two；Incorporated by reference to Fig. 2, the present embodiment is in reality
Apply and the guide portion 3 of extinguishing device improved on the basis of example one, the quantity of guide portion 3 be it is multiple, multiple guide portions 3 are spaced
It is arranged on matrix 1.
Specifically, the quantity of guide portion 3 can have multiple, and when matrix 1 is sphere, multiple guide portions 3 can be with compartment of terrain
The outer surface of sphere is set, it is preferable that it can be uniformly distributed, to accelerate the destruction to matrix 1.
Extinguishing device provided in this embodiment, by setting multiple for guide portion, the release extinguishing chemical that can accelerate.
Embodiment three
Fig. 3 is the structural schematic diagram of the utility model extinguishing device embodiment three；Incorporated by reference to Fig. 3, the present embodiment is in reality
It applies and the guide portion 3 of extinguishing device is improved on the basis of example one, guide portion 3 is wound around outside matrix 1.
Specifically, guide portion 3 can be cotton thread, can be with multi-lay winding outside matrix 1, so as to improve guide portion 3
With the contact area of matrix 1, accelerate the destruction of matrix 1, accelerates the release of extinguishing chemical 2.
Extinguishing device provided in this embodiment, by the way that guide portion is wound around on matrix 1, the release fire extinguishing that can accelerate
Agent.
Example IV
Fig. 4 is the structural schematic diagram of the utility model extinguishing device example IV；Incorporated by reference to Fig. 4, the present embodiment is upper
It states and the matrix 1 of extinguishing device is improved on the basis of embodiment.Matrix 1 includes the first matrix 11 and is set in the first matrix
The second matrix 12 outside 11；Guide portion 3 is arranged outside the first matrix 11.Accommodating chamber is formed with inside first matrix 11；First base
It is formed with housing region between body 11 and the second matrix 12, is filled with first gas in housing region.
Specifically, matrix 1 may include two layers, the first matrix 11 of internal layer and the second matrix 12 of outer layer, the first matrix
11 and second matrix 12 can be film like structures, 11 inner containment extinguishing chemical 2 of the first matrix, the first matrix 11 and the second base
It is formed between body 12 and accommodates section, so as to accommodate first gas.First gas can there are many, such as nitrogen, helium
Etc. nonflammable gas.Preferably, first gas can be carbon dioxide gas, and the effect of fire extinguishing is arrived so as to it, at
This is low.Guide portion 3 has can be set in the outside of second matrix 12.Guide portion 3 can be with the first gas in heated substrate 1 after igniting
Body, first gas expanded by heating can ignite the first matrix 11 and the second matrix 12 and utilize explosion so that the two ruptures simultaneously
Impact can go out 2 quick release of extinguishing chemical in the second matrix 12, and spraying range is wider, and extinguishing effect is more preferable.
Extinguishing device provided in this embodiment passes through the first matrix of setting and the second matrix, the first matrix and the second matrix
Between be provided with first gas, guide portion can be used for heating first gas, so that the first matrix and the second matrix breakdown, improve
The releasing effect of extinguishing chemical.So that blow-off velocity is quicker.
Further, the first matrix 11 and the second matrix 12 are all sphere, can be convenient processing and manufacturing.
Embodiment five
Fig. 5 is the structural schematic diagram of the utility model extinguishing device embodiment five；Fig. 6 is the structural representation of matrix in figure
Figure.Incorporated by reference to Fig. 5 and Fig. 6, the present embodiment is on the basis of example IV by the shape of the first matrix 11 and the second matrix 12
It improves, the first matrix 11 and the second matrix 12 all avoid putting out a fire for cuboid so as to facilitate the placement of extinguishing device
Device is rolled off the position prevented in advance.
Extinguishing device provided by the embodiment can be to avoid going out by setting cuboid for the first matrix and the second matrix
It is rolled in fiery device placement process.
Embodiment six
The present embodiment also provides a kind of fire extinguishing system, including electrical equipment and extinguishing device, and electrical equipment includes cabinet,
Extinguishing device is arranged in cabinet.Extinguishing device includes: matrix 1；The accommodating chamber for accommodating extinguishing chemical 2 is formed in matrix 1,
Extinguishing chemical 2 is for putting out a fire；1 outer surface of matrix is additionally provided with guide portion 3, and guide portion 3 is inflammable part, and guide portion 3 is for destroying base
Body 1, to discharge extinguishing chemical.
Specifically, extinguishing device primarily can be used for putting out a fire to electrical equipment, and electrical equipment can be in power train
To the general designation of the equipment such as generator, transformer, power circuit, breaker in system.A large amount of electric energy will be consumed when its use, be generated
Thermal energy.Capital equipment of the electrical equipment as electricity consumption, is easy to produce spark, to cause fire, electrical equipment is generally concentrated
It places, may include cabinet, extinguishing device can prevent in cabinet.When fire occurs in electrical equipment, extinguishing device can
To put out a fire in time, fire spread is avoided.Extinguishing device in the present embodiment is same as the previously described embodiments, and details are not described herein.
Extinguishing device can be placed in easily ignitable position in advance, or be thrown to fire location, and guide portion 3 can be by
Fire is lighted, and be may then pass through the modes such as fusing, burning or explosion and is destroyed matrix 1, and the extinguishing chemical 2 in matrix 1 is released
It releases, to realize fire extinguishing.The extinguishing device is easy to operate, can be with quick release extinguishing chemical 2.
Fire extinguishing system provided in this embodiment, by the way that matrix is arranged；The receiving for accommodating extinguishing chemical is formed in matrix
Chamber, extinguishing chemical is for putting out a fire；Outer surface of matrix is additionally provided with guide portion, and guide portion is inflammable part, and guide portion is used to destroy matrix,
To discharge extinguishing chemical.Extinguishing device can be placed in easily ignitable position in advance, or be thrown to fire location, guide portion
It can be lighted by fire, then destroy matrix, the intracorporal extinguishing chemical of base is released, to realize fire extinguishing.The fire extinguishing
Device is easy to operate, can be with quick release extinguishing chemical.
Further, the quantity of extinguishing device is multiple, and multiple extinguishing devices are arranged along preset direction interval.Preset direction
It can be the extending direction of cabinet, or can be to be evenly distributed on the intracorporal matrix structure of case.Multiple extinguishing devices can mention
High extinguishing effect.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature." multiple " are meant that at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connection ", " is consolidated at " connected "
It is fixed " to wait terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be
Mechanical connection is also possible to be electrically connected or can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements be can be, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature " upper " or " under "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the above description, reference term " one embodiment ", " some embodiments ", " example ", " specific example " or "
" equal description means that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained in some examples
In at least one embodiment or example of the utility model.In the present specification, schematic expression of the above terms are necessarily
It is directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be at any one
Or it can be combined in any suitable manner in multiple embodiment or examples.In addition, without conflicting with each other, those skilled in the art
Member the feature of different embodiments or examples described in this specification and different embodiments or examples can be combined and
Combination.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of extinguishing device characterized by comprising matrix；
The accommodating chamber for accommodating extinguishing chemical is formed in described matrix, the extinguishing chemical is for putting out a fire；
Described matrix outer surface is additionally provided with guide portion, and the guide portion is inflammable part, and the guide portion is for destroying the base
Body, to discharge the extinguishing chemical.
2. extinguishing device according to claim 1, which is characterized in that the quantity of the guide portion be it is multiple, it is multiple described
Guide portion is arranged at intervals in described matrix.
3. extinguishing device according to claim 1, which is characterized in that the guide portion is wound around outside described matrix.
4. extinguishing device according to claim 1-3, which is characterized in that described matrix includes the first matrix and set
The second matrix being located at outside first matrix；The guide portion is arranged outside first matrix；
First intrinsic silicon is formed with the accommodating chamber；Receiving is formed between first matrix and second matrix
Region is filled with first gas in the housing region.
5. extinguishing device according to claim 4, which is characterized in that the first gas includes carbon dioxide.
6. extinguishing device according to claim 4, which is characterized in that first matrix and second matrix are all ball
Body.
7. extinguishing device according to claim 4, which is characterized in that first matrix and second matrix are all long
Cube.
8. extinguishing device according to claim 1-3, which is characterized in that the extinguishing chemical includes dry-chemical fire extinguishing
Agent.
9. a kind of fire extinguishing system, which is characterized in that including electrical equipment and the described in any item fire extinguishing dresses of claim 1-8
It sets, the electrical equipment includes cabinet, and the extinguishing device is arranged in the cabinet.
10. fire extinguishing system according to claim 9, which is characterized in that the quantity of the extinguishing device is multiple, Duo Gesuo
Extinguishing device is stated to be arranged along preset direction interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821085987.1U CN208823844U (en) | 2018-07-10 | 2018-07-10 | Extinguishing device and fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821085987.1U CN208823844U (en) | 2018-07-10 | 2018-07-10 | Extinguishing device and fire extinguishing system |
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| Publication Number | Publication Date |
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| CN208823844U true CN208823844U (en) | 2019-05-07 |
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ID=66306209
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| CN201821085987.1U Active CN208823844U (en) | 2018-07-10 | 2018-07-10 | Extinguishing device and fire extinguishing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521606A (en) * | 2021-07-22 | 2021-10-22 | 联捷(南通)智能科技有限公司 | Active trigger device of passive fire extinguishing equipment |
-
2018
- 2018-07-10 CN CN201821085987.1U patent/CN208823844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521606A (en) * | 2021-07-22 | 2021-10-22 | 联捷(南通)智能科技有限公司 | Active trigger device of passive fire extinguishing equipment |
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