CN218046263U - Differential pressure starting type injection valve and fire extinguishing system - Google Patents
Differential pressure starting type injection valve and fire extinguishing system Download PDFInfo
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- CN218046263U CN218046263U CN202222235500.6U CN202222235500U CN218046263U CN 218046263 U CN218046263 U CN 218046263U CN 202222235500 U CN202222235500 U CN 202222235500U CN 218046263 U CN218046263 U CN 218046263U
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- 239000007924 injection Substances 0.000 title claims abstract description 51
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- 238000007789 sealing Methods 0.000 claims description 97
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 16
- 230000013011 mating Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
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- 239000000243 solution Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
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- 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
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a pressure differential start-up injection valve and fire extinguishing system, this pressure differential start-up injection valve includes the casing, first piston spare and second piston spare, first piston chamber is injectd to the casing, second piston chamber and intercommunication chamber, the intercommunication chamber is located between first piston chamber and the second piston chamber and is used for linking to each other with the outside closed conduit, first piston chamber has first air inlet and first gas outlet, second piston chamber has second air inlet and second gas outlet, first gas outlet links to each other with outside air supply, the second air inlet passes through outside valves and links to each other with first gas outlet, first piston spare is established in first piston chamber, second piston spare is established in second piston chamber. Adopt this pressure differential start-up injection valve as fire extinguishing systems's fire probe pipe, outside air supply and the valve unit between the jar of putting out a fire, can guarantee that fire extinguishing systems injection pressure is comparatively even at the fire extinguishing process, and this pressure differential start-up injection valve's reliability is better, and life is longer.
Description
Technical Field
The utility model relates to a fire extinguishing apparatus technical field especially relates to a pressure differential starts formula injection valve and fire extinguishing systems.
Background
The lithium ion battery is widely applied to industries such as energy storage, electric vehicles, communication and the like. With the continuous use of the electric core in the battery box, repeated charging and discharging are carried out, the electric core inside the battery box is overcharged or overdischarged in the charging and discharging process due to the difference of electric properties under the condition of long-time and repeated use and consumption, thermal runaway is further caused, and the fire disaster of the whole battery box is caused, so that the production safety and the life safety of people are damaged. Therefore, more and more battery boxes are equipped with fire extinguishing devices in the production and design processes, so that the lithium ion battery boxes are safer and more reliable. The automatic spraying of the fire extinguishing system is realized mostly in the industry by adopting a mode of starting an electromagnetic valve by an electric signal, and the spraying pressure is gradually reduced along with the time. The reliability of the electromagnetic valve is relatively poor, and the leakage is very easy to occur after the electromagnetic valve is used for a long time, so that the phenomenon of the leakage of the fire extinguishing agent is caused.
SUMMERY OF THE UTILITY MODEL
A first aim at provides a pressure differential start-up injection valve, adopts this pressure differential start-up injection valve to visit the control valve group between pipe, outside air supply and the jar of putting out a fire as fire extinguishing systems's fire, can guarantee that fire extinguishing systems is comparatively even at fire extinguishing processes in injection pressure, and this pressure differential start-up injection valve's reliability is better, and life is longer.
A second object of the utility model is to provide a fire extinguishing system, this fire extinguishing system is comparatively even at the in-process injection pressure of putting out a fire, and good reliability, long service life.
The utility model discloses a pressure differential starts formula injection valve, include: the piston comprises a shell, a first piston cavity, a second piston cavity and a communicating cavity are limited by the shell, the communicating cavity is located between the first piston cavity and the second piston cavity and is used for being connected with an external closed pipeline, the first piston cavity is provided with a first air inlet and a first air outlet, the second piston cavity is provided with a second air inlet and a second air outlet, the first air outlet is connected with an external air source, and the second air inlet is connected with the first air outlet through an external valve group; a first piston member provided in the first piston chamber and adapted to open or block a passage between the first air inlet port and the first air outlet port; a second piston member provided in the second piston chamber and adapted to open or block a passage between the second air inlet port and the second air outlet port; wherein: when the external closed pipeline is damaged, external air enters the first piston cavity from the first air inlet to drive the first piston piece to open a channel between the first air inlet and the first air outlet, and the external air enters the second piston cavity from the second air inlet through the external valve group to drive the second piston piece to open a channel between the second air inlet and the second air outlet so that the external air is discharged from the second air outlet.
In some embodiments, the first piston member has a first large end portion disposed toward the communication chamber and a first small end portion for opening or blocking a passage between the first air inlet and the first air outlet; the second piston member has a second large end portion disposed toward the communication chamber and a second small end portion for opening or blocking a passage between the second air inlet port and the second air outlet port.
In some specific embodiments, the first piston cavity includes a first matching cavity, a first air inlet cavity and a first air outlet cavity, the first matching cavity is matched with the first piston member and is communicated with the first air inlet cavity and the first air outlet cavity, the first air inlet cavity has a first straight section and a first diverging section, a first air inlet is formed at one end of the first straight section, which is far away from the first diverging section, the size of the first diverging section gradually increases in a direction, which is far away from the first straight section, a first sealing groove is arranged on the first small end portion, a first sealing element is matched in the first sealing groove, and the first sealing element can stop against a side wall of the first diverging section.
In some specific more embodiments, a second sealing groove is formed in the first small end, a second sealing element is arranged in the second sealing groove, and an outer peripheral wall of the second sealing element abuts against an inner side wall of the first matching cavity; and/or: the first big end part is provided with a third sealing groove, a third sealing element is arranged in the third sealing groove, and the peripheral wall of the third sealing element is abutted against the inner side wall of the first matching cavity.
In some specific embodiments, the second piston cavity includes a second matching cavity, a second air inlet cavity and a second air outlet cavity, the second matching cavity is matched with the second piston element and is communicated with the second air inlet cavity and the second air outlet cavity, the second air inlet cavity has a second straight section and a second gradually expanding section, one end of the second straight section, which is far away from the second gradually expanding section, forms a second air inlet, the size of the second gradually expanding section gradually increases in a direction close to the second straight section, a fourth sealing groove is arranged on the second small end portion, a fourth sealing element is matched in the fourth sealing groove, and the fourth sealing element can abut against a side wall of the second gradually expanding section.
In some more specific embodiments, a fifth sealing groove is formed in the second small end, a fifth sealing element is arranged in the fifth sealing groove, and an outer peripheral wall of the fifth sealing element abuts against an inner side wall of the second matching cavity; and/or: and a sixth sealing groove is formed in the second large end part, a sixth sealing element is arranged in the sixth sealing groove, and the peripheral wall of the sixth sealing element abuts against the inner side wall of the second matching cavity.
In some embodiments, the housing includes a first housing portion, a second housing portion, and a third housing portion, wherein one end of the second housing portion is connected to the first housing portion to define the first piston chamber, and the first housing portion is provided with the first air inlet and the first air outlet; one end of the second shell portion is connected with the third shell portion to limit the second piston cavity, and the third shell portion is provided with the second air inlet and the second air outlet.
The utility model also discloses a fire extinguishing system, include: the fire extinguishing tank is used for loading fire extinguishing agent; the gas cylinder is used for loading protective gas; a pressure relief valve having a pressure relief inlet and a pressure relief outlet; in the above-mentioned pressure difference-activated injection valve, the first gas inlet is connected to the gas cylinder, the first gas outlet is connected to the pressure-reducing inlet, the second gas inlet is connected to the pressure-reducing outlet, the second gas outlet is connected to the fire extinguishing tank, and the communicating chamber is communicated with the fire probe tube.
In some embodiments, the fire extinguishing system further comprises a fire extinguishing pipe, one end of the fire extinguishing pipe is closed, the other end of the fire extinguishing pipe is connected to the fire extinguishing tank, and a plurality of fire extinguishing nozzles are arranged on the fire extinguishing pipe.
In some embodiments, the fire extinguishing tank is a piston type fire extinguishing tank, a piston plate is arranged in the fire extinguishing tank, the piston plate divides the internal space of the fire extinguishing tank into a fire extinguishing chamber and a driving chamber, the driving chamber is communicated with the second air outlet, and a fire extinguishing outlet is arranged on the fire extinguishing chamber.
The utility model discloses a pressure differential starts formula injection valve's beneficial effect: double sealing can be realized to the first piston spare and the second piston spare that set up, even if there is the circumstances of revealing a little when having solved long-time operation, the fire extinguishing agent spun phenomenon in the drive fire extinguishing jar can not appear yet, thereby the reliability of use of pressure differential start-up injection valve has been promoted, and because double sealing's structure can prolong the life of pressure differential start-up injection valve, and because in the course of the work, when the outside closed conduit is destroyed, the intercommunication chamber communicates with external environment, outside gas gets into first piston chamber from first air inlet and opens the passageway between first air inlet and the first gas outlet with drive first piston spare, outside gas gets into the passageway between second piston chamber and second gas outlet with drive second piston spare open second air inlet and second gas outlet from the second air inlet through outside valves, so that outside gas discharges from the second gas outlet, can make second gas outlet discharge gas flow pressure all the time comparatively even, thereby guarantee that fire extinguishing system is spray pressure comparatively even in the fire extinguishing process.
The utility model discloses a fire extinguishing system's beneficial effect: due to the fact that the pressure difference starting type injection valve is arranged, the fire extinguishing system is uniform in injection pressure in the fire extinguishing process, good in reliability and long in service life.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a differential pressure actuated injection valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fire extinguishing system according to an embodiment of the present invention.
Reference numerals:
1. a housing; 11. a first shell portion; 111. a first air inlet; 112. a first air outlet; 12. a second shell portion; 13. a third shell portion; 131. a second air inlet; 132. a second air outlet; 101. a first piston chamber; 1011. a first mating cavity; 1012. a first air intake chamber; 10121. a first straight section; 10122. a first divergent section; 1013. a first air outlet cavity; 102. a second piston chamber; 1021. a second mating cavity; 1022. a second air intake chamber; 10221. a second straight section; 10222. a second divergent section; 1023. a first air outlet cavity; 103. a communicating cavity;
2. a first piston member; 21. a first small end portion; 211. a first seal groove; 212. a second seal groove; 22. a first large end portion; 221. a third seal groove;
3. a second piston member; 31. a second small end portion; 311. a fourth seal groove; 312. a fifth seal groove; 32. a second large end; 321. a sixth seal groove;
4. a first seal member; 5. a second seal member; 6. a third seal member; 7. a fourth seal member; 8. a fifth seal member; 9. a sixth seal member;
100. a fire extinguishing tank; 110. a piston plate; 120. a drive chamber; 130. a fire extinguishing chamber; 200. a gas cylinder; 300. a pressure reducing valve; 400. a fire detection pipe; 500. and (4) extinguishing the fire.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In addition, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature for distinguishing between descriptive features, non-sequential, and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
The specific structure of the differential pressure start injection valve of the embodiment of the present invention will be described below with reference to fig. 1 to 2.
The utility model discloses a pressure differential start-up formula injection valve, as shown in fig. 1, the pressure differential start-up formula injection valve of this embodiment includes casing 1, first piston spare 2 and second piston spare 3, casing 1 prescribes a limit to first piston chamber 101, second piston chamber 102 and intercommunication chamber 103, intercommunication chamber 103 is located between first piston chamber 101 and the second piston chamber 102 and is used for linking to each other with the outside closed conduit, first piston chamber 101 has first air inlet 111 and first gas outlet 112, second piston chamber 102 has second air inlet 131 and second gas outlet 132, first gas outlet 112 links to each other with external air source, second air inlet 131 links to each other with first gas outlet 112 through outside valves, first piston spare 2 is established in first piston chamber 101, and be used for opening or blocking the passageway between first air inlet 111 and the first gas outlet 112, second piston spare 3 is established in second piston chamber 102, and be used for opening or blocking the passageway between second air inlet 131 and the second gas outlet 132. When the external closed pipe is broken, external air enters the first piston cavity 101 from the first air inlet 111 to drive the first piston member 2 to open the passage between the first air inlet 111 and the first air outlet 112, and external air enters the second piston cavity 102 from the second air inlet 131 through the external valve set to drive the second piston member 3 to open the passage between the second air inlet 131 and the second air outlet 132, so that the external air is discharged from the second air outlet 132.
It will be appreciated that in actual operation, when the outer closed conduit is intact, the communicating chamber 103 is isolated from the environment, and thus cannot move the first piston member 2 even if gas enters the first piston chamber 101 from the first gas inlet 111, and cannot move the second piston member 3 even if gas enters the second piston chamber 102 from the second gas inlet 131. When the external closed pipe is broken, the communication chamber 103 is communicated with the external environment, external air enters the first piston chamber 101 from the first air inlet 111 to drive the first piston member 2 to open the passage between the first air inlet 111 and the first air outlet 112, and external air enters the second piston chamber 102 from the second air inlet 131 through the external valve set to drive the second piston member 3 to open the passage between the second air inlet 131 and the second air outlet 132, so that the external air is discharged from the second air outlet 132. From this, fire probe 400 as fire extinguishing systems is used as to the pressure differential start-up injection valve of this embodiment, the valve unit between outside air supply and the jar 100 that goes out a fire, particularly, fire probe 400 communicates with intercommunication chamber 103 as outside closed conduit, outside air supply links to each other with first air inlet 111, second gas outlet 132 links to each other with the jar 100 that goes out a fire, double sealing has just been realized through first piston spare 2 and second piston spare 3 like this, even if there is under the circumstances of revealing a little when having solved long-time work, the fire extinguishing agent spun phenomenon in the jar 100 that goes out a fire can not appear in the drive, thereby the reliability in service of pressure differential start-up injection valve has been promoted, and because double sealing's structure can prolong the life of pressure differential start-up injection valve.
It should be added that when the fire-detecting pipe 400 is damaged, the gas of the external gas source enters the second piston cavity 102 from the second gas inlet 131 through the external valve set to drive the second piston member 3 to open the channel between the second gas inlet 131 and the second gas outlet 132, so that the external gas enters the fire extinguishing tank 100 from the second gas outlet 132 to discharge the fire extinguishing agent, compared with the way of directly spraying the fire extinguishing agent in the fire extinguishing tank in the prior art, the pressure difference starting type injection valve of the embodiment can ensure that the pressure for driving the fire extinguishing agent to move is always stable, thereby enabling the fire extinguishing tank 100 to uniformly spray the fire extinguishing agent.
In some embodiments, as shown in fig. 1, the first piston member 2 has a first large end portion 22 and a first small end portion 21, the first large end portion 22 being disposed toward the communication chamber 103, and the first small end portion 21 being used to open or block a passage between the first air inlet 111 and the first air outlet 112. The second piston member 3 has a second large end portion 32 and a second small end portion 31, the second large end portion 32 being disposed toward the communication chamber 103, and the second small end portion 31 being for opening or blocking a passage between the second air inlet 131 and the second air outlet 132. It will be appreciated that the first piston member 2 and the second piston member 3, both of which are relatively large towards the end of the communicating chamber 103, are relatively large, so that when the outer closed tube is intact, even if there is a leak, the first air inlet 111 and the second air inlet 131 are provided with external air, and because of the relatively small size of the first small end portion 21 and the second small end portion 31, the force of the leaked air acting on the first small end portion 21 and the second small end portion 31 cannot be greater than the gravity of the first piston member 2 and the second piston member 3, thereby improving the reliability of the entire pressure-difference-activated injection valve and avoiding the occurrence of a phenomenon that the pressure-difference-activated injection valve is opened (i.e., the air is discharged from the second air outlet 132) due to an accidental leak or drop. It should be noted that, the specific size, shape and other parameters of the first large end portion 22, the first small end portion 21, the second large end portion 32 and the second small end portion 31 can be selected according to actual needs, and the parameters of the first large end portion 22, the first small end portion 21, the second large end portion 32 and the second small end portion 31 are not limited herein.
In some specific embodiments, as shown in fig. 1, the first piston chamber 101 includes a first mating chamber 1011, a first inlet chamber 1012 and a first outlet chamber 1013, the first mating chamber 1011 mates with the first piston member 2 and communicates with the first inlet chamber 1012 and the first outlet chamber 1013, the first inlet chamber 1012 has a first straight section 10121 and a first diverging section 10122, an end of the first straight section 10121 away from the first diverging section 10122 forms the first inlet port 111, a size of the first diverging section 10122 gradually increases in a direction away from the first straight section 10121, a first sealing groove 211 is disposed on the first small end 21, a first sealing member 4 is fitted in the first sealing groove 211, and the first sealing member 4 can abut against a sidewall of the first diverging section 10122. It will be appreciated that the first mating chamber 1011 ensures a stable movement of the first piston member 2 and that the first inlet chamber 1012 has a first diverging section 10122 such that lifting the first small end portion 21 when the first small end portion 21 is inserted into the first inlet chamber 1012 stably seals the first inlet chamber 1012, thereby ensuring a blocking action of the first piston member 2 between the first inlet port 111 and the first outlet port 112. At the same time, the added first seal 4 can further improve the sealing of the first small end portion 21 to the first intake chamber 1012. It should be noted that in this embodiment, parameters such as a material and a model of the first sealing member 4 may be selected according to actual needs, and a detailed description of the first sealing member 4 is not provided herein.
In some more specific embodiments, as shown in fig. 1, a second sealing groove 212 is disposed on the first small end portion 21, a second sealing member 5 is disposed in the second sealing groove 212, and an outer peripheral wall of the second sealing member 5 abuts against an inner sidewall of the first mating cavity 1011; and/or: the first large end portion 22 is provided with a third sealing groove 221, a third sealing element 6 is arranged in the third sealing groove 221, and the outer peripheral wall of the third sealing element 6 abuts against the inner side wall of the first matching cavity 1011. It will be appreciated that the addition of the second and third seals 5, 6 ensures that the entire first piston member 2 is sealed to the inner side wall of the first mating chamber 1011, thereby improving the reliability of the entire pressure differential actuated injection valve. It should be noted that in this embodiment, parameters such as the material and the type of the second sealing member 5 and the third sealing member 6 may be selected according to actual needs, and a detailed description of the second sealing member 5 and the third sealing member 6 is not provided herein.
In some specific embodiments, as shown in fig. 1, the second piston chamber 102 includes a second matching chamber 1021, a second air inlet chamber 1022 and a second air outlet chamber 1023, the second matching chamber 1021 is matched with the second piston member 3 and is communicated with the second air inlet chamber 1022 and the second air outlet chamber 1023, the second air inlet chamber 1022 has a second straight section 10221 and a second gradually expanding section 10222, an end of the second straight section 10221 far away from the second gradually expanding section 10222 forms a second air inlet 131, the size of the second gradually expanding section 10222 is gradually increased in a direction close to the second straight section 10221, a fourth sealing groove 311 is arranged on the second small end portion 31, a fourth sealing element 7 is matched in the fourth sealing groove 311, and the fourth sealing element 7 can stop against a side wall of the second gradually expanding section 10222. It will be appreciated that the second fitting chamber 1021 ensures stable movement of the second piston member 3, and that the second inlet chamber 1022 has a second diverging section 10222, such that when the second small end portion 31 is inserted into the second inlet chamber 1022, the second small end portion 31 can be lifted to stably seal the second inlet chamber 1022, thereby ensuring blocking of the second piston member 3 between the second inlet 131 and the second outlet 132. At the same time, the added fourth sealing element 7 can further improve the sealing of the second small end portion 31 against the second intake cavity 1022. It should be noted that, in the present embodiment, parameters such as a material and a model of the fourth sealing member 7 may be selected according to actual needs, and a detailed description of the fourth sealing member 7 is not provided herein
In some more specific embodiments, as shown in fig. 1, a fifth sealing groove 312 is disposed on the second small end portion 31, a fifth sealing element 8 is disposed in the fifth sealing groove 312, and an outer peripheral wall of the fifth sealing element 8 abuts against an inner sidewall of the second fitting cavity 1021; and/or: a sixth sealing groove 321 is formed in the second large end portion 32, a sixth sealing member 9 is arranged in the sixth sealing groove 321, and an outer peripheral wall of the sixth sealing member 9 abuts against an inner side wall of the second matching cavity 1021. It will be appreciated that the addition of the fifth and sixth seals 8, 9 ensures the sealing of the connection between the entire second piston member 3 and the inner side wall of the second fitting chamber 1021, thereby improving the reliability of the entire differential pressure start injection valve.
In some embodiments, as shown in fig. 1, the housing 1 includes a first housing portion 11, a second housing portion 12, and a third housing portion 13, the second housing portion 12 is connected to the first housing portion 11 at one end to define a first piston chamber 101, and the first housing portion 11 is provided with a first air inlet 111 and a first air outlet 112; one end of the second housing portion 12 is connected to the third housing portion 13 to define a second piston chamber 102, and the third housing portion 13 is provided with a second air inlet 131 and a second air outlet 132. It can be understood that, compared with the integrally formed housing 1, the housing 1 is divided into the first housing part 11, the second housing part 12 and the third housing part 13, and the manufacturing process of the housing 1 can be simplified, and the manufacturing cost of the housing 1 can be reduced. Preferably, the first shell portion 11 and the second shell portion 12 are in threaded connection, and the third shell portion 13 and the second shell portion 12 are in threaded connection, so that the assembly of the housing 1 can be facilitated, and the sealing performance of the housing 1 can be improved.
Example (b):
the specific structure of a differential pressure actuated injection valve according to an embodiment of the present invention will be described with reference to fig. 1.
As shown in fig. 1, the differential pressure activation type injection valve of the present embodiment includes a housing 1, a first piston member 2, and a second piston member 3, the housing 1 includes a first housing portion 11, a second housing portion 12, and a third housing portion 13, one end of the second housing portion 12 is connected to the first housing portion 11 to define a first piston chamber 101, and the first housing portion 11 is provided with a first air inlet 111 and a first air outlet 112; one end of the second housing portion 12 is connected with the third housing portion 13 to define a second piston chamber 102, with the third housing portion 13 having a second inlet port 131 and a second outlet port 132 provided thereon. A communication cavity 103 is arranged in the second housing 1 and positioned between the first piston cavity 101 and the second piston cavity 102, and the communication cavity 103 is connected with an external closed pipeline. The first piston member 2 has a first large end portion 22 and a first small end portion 21, the first large end portion 22 being disposed toward the communication chamber 103, the first small end portion 21 being for opening or blocking a passage between the first air inlet 111 and the first air outlet 112; the second piston member 3 has a second large end portion 32 and a second small end portion 31, the second large end portion 32 being disposed toward the communication chamber 103, the second small end portion 31 being for opening or blocking a passage between the second air inlet 131 and the second air outlet 132.
The first piston cavity 101 comprises a first matching cavity 1011, a first air inlet cavity 1012 and a first air outlet cavity 1013, the first matching cavity 1011 is matched with the first piston member 2 and is communicated with the first air inlet cavity 1012 and the first air outlet cavity 1013, the first air inlet cavity 1012 is provided with a first straight section 10121 and a first diverging section 10122, one end of the first straight section 10121, which is far away from the first diverging section 10122, forms a first air inlet 111, the size of the first diverging section 10122 is gradually increased in the direction far away from the first straight section 10121, the first small end 21 is provided with a first sealing groove 211 and a second sealing groove 212, a first sealing element 4 is matched in the first sealing groove 211, and the first sealing element 4 can be stopped against the side wall of the first diverging section 10122. A second sealing member 5 is disposed in the second sealing groove 212, and an outer circumferential wall of the second sealing member 5 abuts against an inner sidewall of the first fitting cavity 1011. A third sealing groove 221 is formed in the first large end portion 22, a third sealing member 6 is arranged in the third sealing groove 221, and the outer peripheral wall of the third sealing member 6 abuts against the inner side wall of the first matching cavity 1011.
The utility model also discloses a fire extinguishing system, as shown in fig. 2, the fire extinguishing system of this embodiment includes fire extinguishing tank 100, gas cylinder 200, pressure-difference start-up injection valve before pressure reducing valve 300 and, be used for loading fire extinguishing agent in the fire extinguishing tank 100, gas cylinder 200 is used for loading protective gas, pressure reducing valve 300 has decompression import and decompression export, first air inlet 111 links to each other with gas cylinder 200, first gas outlet 112 links to each other with the decompression import, second air inlet 131 links to each other with the decompression export, second gas outlet 132 links to each other with fire extinguishing tank 100, intercommunication chamber 103 communicates with fire probe 400. It will be appreciated that when the probe tube 400 remains closed, even if a leak occurs in the pressure-difference-activated injection valve, the gas entering the first piston chamber 101 from the first gas inlet 111 cannot urge the first piston member 2 to move, and the gas entering the second piston chamber 102 from the second gas inlet 131 cannot urge the second piston member 3 to move. That is, even if the pressure difference-activated injection valve is leaked, the phenomenon of driving the extinguishing agent in the extinguishing tank 100 to be sprayed does not occur, thereby improving the reliability of the fire extinguishing system and extending the life span of the fire extinguishing system due to the double-sealing structure. Meanwhile, when the fire-detecting pipe 400 is damaged, the gas of the external gas source enters the second piston cavity 102 from the second gas inlet 131 through the external valve set to drive the second piston member 3 to open the channel between the second gas inlet 131 and the second gas outlet 132, so that the external gas enters the fire extinguishing tank 100 from the second gas outlet 132 to discharge the fire extinguishing agent, compared with the way that the fire extinguishing tank directly sprays the fire extinguishing agent in the prior art, the pressure difference starting type injection valve of the embodiment can ensure that the pressure for driving the fire extinguishing agent to move is always stable, and thus the fire extinguishing tank 100 can uniformly spray the fire extinguishing agent.
In some embodiments, as shown in fig. 2, the fire extinguishing system further includes a fire extinguishing pipe 500, one end of the fire extinguishing pipe 500 is closed, the other end is connected to the fire extinguishing tank 100, and a plurality of fire extinguishing nozzles are disposed on the fire extinguishing pipe 500. Therefore, the fire extinguishing agent can be uniformly sprayed to the fire area in a large area, and the fire extinguishing efficiency and the fire extinguishing effect of the fire extinguishing system are improved.
In some embodiments, as shown in fig. 2, the fire extinguishing tank 100 is a piston type fire extinguishing tank, a piston plate 110 is disposed in the fire extinguishing tank 100, the piston plate 110 divides the internal space of the fire extinguishing tank 100 into a fire extinguishing chamber 130 and a driving chamber 120, the driving chamber 120 is communicated with the second air outlet 132, and a fire extinguishing outlet is disposed on the fire extinguishing chamber 130. The piston type fire extinguishing tank can further improve the uniformity of the sprayed fire extinguishing agent, so that the fire extinguishing efficiency and the fire extinguishing effect of the fire extinguishing system are improved. Certainly, in other embodiments of the present invention, other structures such as capsule fire extinguishing pots can be used.
The specific structure of the fire extinguishing system according to one embodiment of the present invention will be described with reference to fig. 2.
As shown in fig. 2, the fire extinguishing system of the present embodiment includes a fire extinguishing tank 100, a gas cylinder 200, a pressure reducing valve 300, a fire detection pipe 400, a pressure difference starting type injection valve and a fire extinguishing pipe 500, the gas cylinder 200 is used for loading protective gas, the pressure reducing valve 300 has a pressure reducing inlet and a pressure reducing outlet, the structure of the pressure difference starting type injection valve is clearly described in the foregoing, and the description is omitted, and only the connection relationship between the pressure difference starting type injection valve and other parts is described. Be used for loading fire extinguishing agent in the fire extinguishing jar 100, be equipped with piston plate 110 in the fire extinguishing jar 100, piston plate 110 divides fire extinguishing jar 100 inner space into fire extinguishing chamber 130 and drive chamber 120, and drive chamber 120 and second gas outlet 132 intercommunication are equipped with the export of putting out a fire on the fire extinguishing chamber 130. The first gas inlet 111 is connected with the gas cylinder 200, the first gas outlet 112 is connected with the pressure reduction inlet, the second gas inlet 131 is connected with the pressure reduction outlet, the second gas outlet 132 is connected with the fire extinguishing tank 100, and the communicating cavity 103 is communicated with the fire probe 400. One end of the fire extinguishing pipe 500 is closed, the other end is connected to the fire extinguishing tank 100, and a plurality of fire extinguishing nozzles are arranged on the fire extinguishing pipe 500.
The advantages of the fire suppression system of this embodiment are as follows:
firstly: double sealing is realized, and the function that the piston is not pushed to spray the fire extinguishing agent even if micro leakage exists during long-time operation is realized;
secondly, the method comprises the following steps: the structure is simple, the reaction is rapid, and the phenomenon of false opening in complex design is solved;
thirdly, the differential pressure starting type injection valve adopts a proper sealing piece, so that leakage can not occur at the temperature of 60 ℃ below zero to 200 ℃ at high temperature, and the reliability of the fire extinguishing system is improved;
fourthly: the pressure difference starting type injection valve cannot be opened by mistake when falling from high altitude and the like no matter which direction and violent vibration are generated in the using process, and the reliability is high;
fifth: the fire extinguishing device solves the industrial problem that other fire sources cannot extinguish fire after the fire detecting pipe is melted when only the fire detecting pipe exists in the prior art.
Reference throughout this specification to "some embodiments," "other embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A pressure differential activated injection valve, comprising:
the piston type air-conditioning unit comprises a shell (1), wherein the shell (1) defines a first piston cavity (101), a second piston cavity (102) and a communication cavity (103), the communication cavity (103) is located between the first piston cavity (101) and the second piston cavity (102) and is used for being connected with an external closed pipeline, the first piston cavity (101) is provided with a first air inlet (111) and a first air outlet (112), the second piston cavity (102) is provided with a second air inlet (131) and a second air outlet (132), the first air outlet (112) is connected with an external air source, and the second air inlet (131) is connected with the first air outlet (112) through an external valve group;
a first piston member (2), said first piston member (2) being arranged in said first piston chamber (101) and being adapted to open or block a passage between said first air inlet (111) and said first air outlet (112);
a second piston member (3), said second piston member (3) being arranged in said second piston chamber (102) and being adapted to open or block a passage between said second air inlet (131) and said second air outlet (132); wherein:
when the external closed pipeline is broken, external air enters the first piston cavity (101) from the first air inlet (111) to drive the first piston piece (2) to open a channel between the first air inlet (111) and the first air outlet (112), and the external air enters the second piston cavity (102) from the second air inlet (131) through the external valve group to drive the second piston piece (3) to open a channel between the second air inlet (131) and the second air outlet (132) so as to be discharged from the second air outlet (132).
2. A pressure-difference-activated injection valve according to claim 1, characterised in that the first piston member (2) has a first large end portion (22) and a first small end portion (21), the first large end portion (22) being disposed towards the communication chamber (103), the first small end portion (21) being adapted to open or block a passage between the first air inlet opening (111) and the first air outlet opening (112);
the second piston member (3) has a second large end portion (32) and a second small end portion (31), the second large end portion (32) being disposed toward the communication chamber (103), the second small end portion (31) being for opening or blocking a passage between the second air inlet (131) and the second air outlet (132).
3. The pressure differential initiated injection valve of claim 2 wherein the first piston bore (101) comprises a first mating bore (1011), a first inlet bore (1012) and a first outlet bore (1013), the first mating bore (1011) mating with the first piston member (2) and communicating with the first inlet bore (1012) and the first outlet bore (1013), the first inlet bore (1012) having a first straight section (10121) and a first diverging section (10122), the end of the first straight section (10121) distal from the first diverging section (10122) forming the first inlet port (111), the first diverging section (10122) increasing in size in a direction distal from the first straight section (10121), the first small end (21) having a first seal groove (211) disposed thereon, the first seal (4) mating within the first small end (211) and the first seal (4) terminating against the side wall of the first diverging section (10122).
4. A pressure difference activated injection valve according to claim 3 wherein said first small end portion (21) is provided with a second sealing groove (212), said second sealing groove (212) being provided with a second sealing member (5), an outer peripheral wall of said second sealing member (5) abutting against an inner side wall of said first mating chamber (1011); and/or:
be equipped with third seal groove (221) on first big tip (22), be equipped with third sealing member (6) in third seal groove (221), the periphery wall of third sealing member (6) is stopped to be in on the inside wall of first cooperation chamber (1011).
5. A pressure differential activated injection valve as claimed in claim 2 wherein said second piston chamber (102) includes a second mating chamber (1021), a second inlet chamber (1022) and a second outlet chamber (1023), said second mating chamber (1021) mating with said second piston member (3) and communicating with said second inlet chamber (1022) and said second outlet chamber (1023), said second inlet chamber (1022) having a second straight section (10221) and a second diverging section (10222), an end of said second straight section (10221) distal from said second diverging section (10222) forming a second inlet port (131), said second diverging section (10222) increasing in size in a direction proximal to said second straight section (10221), said second small end portion (31) having a fourth seal (311) disposed thereon, said fourth seal (311) mating therein (7), and said fourth seal (7) terminating in a seal groove side wall of said second diverging section (10222).
6. A pressure differential actuated injection valve according to claim 5 wherein the second small end portion (31) is provided with a fifth seal groove (312), a fifth seal member (8) is provided in the fifth seal groove (312), and the outer peripheral wall of the fifth seal member (8) abuts against the inner side wall of the second fitting chamber (1021); and/or:
a sixth sealing groove (321) is formed in the second large end portion (32), a sixth sealing element (9) is arranged in the sixth sealing groove (321), and the outer peripheral wall of the sixth sealing element (9) abuts against the inner side wall of the second matching cavity (1021).
7. The pressure-difference-activated injection valve according to any one of claims 1-6, wherein the housing (1) comprises a first housing portion (11), a second housing portion (12), and a third housing portion (13), the second housing portion (12) being connected at one end to the first housing portion (11) to define the first piston chamber (101), the first housing portion (11) being provided with the first inlet port (111) and the first outlet port (112); one end of the second housing portion (12) is connected with the third housing portion (13) to define the second piston chamber (102), and the second air inlet (131) and the second air outlet (132) are disposed on the third housing portion (13).
8. A fire suppression system, comprising:
the fire extinguishing tank (100) is used for loading fire extinguishing agent in the fire extinguishing tank (100);
a gas cylinder (200), the gas cylinder (200) being used for loading a protective gas;
a pressure reducing valve (300), the pressure reducing valve (300) having a pressure reducing inlet and a pressure reducing outlet;
the pressure differential actuated injection valve according to any of claims 1 to 7, wherein the first gas inlet (111) is connected to the gas cylinder (200), the first gas outlet (112) is connected to the reduced pressure inlet, the second gas inlet (131) is connected to the reduced pressure outlet, the second gas outlet (132) is connected to the fire extinguishing tank (100), and the communication chamber (103) is in communication with a fire probe (400).
9. The fire extinguishing system according to claim 8, further comprising a fire extinguishing pipe (500), wherein one end of the fire extinguishing pipe (500) is closed and the other end is connected to the fire extinguishing tank (100), and wherein a plurality of fire extinguishing nozzles are provided on the fire extinguishing pipe (500).
10. The fire extinguishing system according to claim 8, wherein the fire extinguishing tank (100) is a piston type fire extinguishing tank, a piston plate (110) is arranged in the fire extinguishing tank (100), the piston plate (110) divides the inner space of the fire extinguishing tank (100) into a fire extinguishing chamber (130) and a driving chamber (120), the driving chamber (120) is communicated with the second air outlet (132), and a fire extinguishing outlet is arranged on the fire extinguishing chamber (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222235500.6U CN218046263U (en) | 2022-08-24 | 2022-08-24 | Differential pressure starting type injection valve and fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222235500.6U CN218046263U (en) | 2022-08-24 | 2022-08-24 | Differential pressure starting type injection valve and fire extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218046263U true CN218046263U (en) | 2022-12-16 |
Family
ID=84405958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222235500.6U Active CN218046263U (en) | 2022-08-24 | 2022-08-24 | Differential pressure starting type injection valve and fire extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218046263U (en) |
-
2022
- 2022-08-24 CN CN202222235500.6U patent/CN218046263U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Differential pressure starting spray valve and fire extinguishing system Granted publication date: 20221216 Pledgee: Fumin Sub branch of Bank of Shanghai Co.,Ltd. Pledgor: ZHEFU INTELLIGENT SYSTEM (SHANGHAI) Co.,Ltd. Registration number: Y2024980003868 |