CN115382138A - Valve group and fire extinguishing device - Google Patents
Valve group and fire extinguishing device Download PDFInfo
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- CN115382138A CN115382138A CN202211049279.3A CN202211049279A CN115382138A CN 115382138 A CN115382138 A CN 115382138A CN 202211049279 A CN202211049279 A CN 202211049279A CN 115382138 A CN115382138 A CN 115382138A
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- valve
- control valve
- fire
- check valve
- chamber
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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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
- A62C37/42—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 with mechanical connection between sensor and actuator, e.g. rods, levers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides a valve bank and a fire extinguishing device, wherein the valve bank comprises: valve body, visit firetube and start trunk line, main pipeline, cavity unit, check valve case, first elastic component, control valve case and the second elastic component are put in the fire extinguishing agent spraying. The device comprises a plurality of cavity units, wherein each cavity unit comprises a check valve cavity, a control valve cavity, a first communication channel, a fire detection pipe connecting channel, a spray head connecting channel, a second communication channel and a third communication channel; each check valve chamber is internally provided with a movable check valve core; each control valve cavity is provided with a movable control valve core, the control valve core separates the first communication channel and the fire detecting pipe connecting channel from the spray head connecting channel and the fire extinguishing agent spraying main pipeline, and the fire extinguishing agent spraying main pipeline is communicated with the spray head connecting channel under the condition that the second valve port is opened by the control valve core. By applying the technical scheme of the invention, the problems of complex structure and high cost of the fire extinguishing device in the prior art can be effectively solved.
Description
Technical Field
The invention relates to the field of fire extinguishing devices, in particular to a valve bank and a fire extinguishing device.
Background
In the prior art, an indirect fire detecting tube fire extinguishing apparatus is provided, which uses a fire detecting tube as a fire detecting and starting part and uses a releasing tube and a nozzle as a fire extinguishing agent releasing part.
The fire detecting tube is connected to the fire extinguishing agent storage device through the container valve and fixed near the position where the fire source is likely to occur to detect the fire source, when the fire is met, the fire detecting tube is softened and exploded at the position with the highest heating temperature, the container valve of the fire extinguishing agent bottle group is started by utilizing the pressure reduction in the fire detecting tube, the fire extinguishing agent flows to the nozzle through the release pipe, and the nozzle releases the fire extinguishing agent to extinguish the fire.
The indirect fire detecting tube fire extinguishing device on the market is generally used in a mode of protecting a space for a set of system. But a plurality of protected spaces which are relatively close and independent are very cost-effective solutions if one set of fire extinguishing apparatus can be used to protect a plurality of spaces simultaneously.
In order to realize that the set of indirect fire detecting tube fire extinguishing device protects a plurality of protected spaces, a fire extinguishing controller, a multi-channel signal feedback device and a plurality of electromagnetic valves are added in the design scheme to serve as a partition control valve and a multi-channel check valve. According to the fire-fighting requirements, the fire extinguisher needs to be provided with a standby power supply besides a normal power supply.
As shown in fig. 1, the fire extinguishing apparatus mainly comprises an indirect fire detecting tube fire extinguishing apparatus cylinder group 1, a fire extinguishing controller 2, a partition electromagnetic valve 3, a fire extinguishing agent delivery pipeline joint, a spray head 4, a check valve 5, a fire detecting tube and a signal feedback device 6.
When a fire disaster happens to a certain protected area, the fire detecting tube arranged in the protected area is heated and broken, the internal pressure is reduced, the signal feedback device 6 in the area feeds back pressure reduction information to the fire extinguishing controller 2, the fire detecting tube is reduced in pressure, and meanwhile, the fire extinguishing agent bottle group container valve started at low pressure is started, and fire extinguishing agent is sprayed and released. After receiving the signal of the signal feedback device 6, the fire extinguishing controller 2 starts the partition electromagnetic valve 3 of the corresponding area, so that the fire extinguishing agent can flow to the spray head 4 of the area, and the fire extinguishing function of releasing the fire extinguishing agent is realized. When the pressure of the fire detecting pipe in one area is reduced, in order to avoid that the pressure in the fire detecting pipes in other areas connected in parallel is also reduced and the fire extinguishing agent is sprayed by mistake, a check valve 5 is required to be added in each fire detecting pipe.
The product structure of the mode is more complicated, the product reliability is low, and the cost is very high.
Disclosure of Invention
The invention mainly aims to provide a valve bank and a fire extinguishing device, and aims to solve the problems of complex structure and high cost of the fire extinguishing device in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a valve block including: a valve body; the fire detecting pipe starting main pipeline is arranged on the valve body and is provided with a first air inlet positioned on the outer surface of the valve body; the fire extinguishing agent spraying main pipeline is arranged on the valve body and is arranged at intervals with the fire detecting pipe starting main pipeline, and the fire extinguishing agent spraying main pipeline is provided with a second air inlet positioned on the outer surface of the valve body; the fire extinguishing agent spraying main pipeline comprises a plurality of cavity units, wherein the cavity units are arranged on the valve body at intervals, each cavity unit comprises a check valve cavity, a control valve cavity, a first communication channel for communicating the check valve cavity with the control valve cavity, a fire detecting pipe connecting channel and a spray head connecting channel for communicating the control valve cavity with the outside atmosphere, a second communication channel for communicating the check valve cavity with the fire detecting pipe starting main pipeline and a third communication channel for communicating the control valve cavity with the fire extinguishing agent spraying main pipeline, and a communication port for communicating the spray head connecting channel with the control valve cavity is positioned between a communication port for communicating the fire detecting pipe connecting channel with the control valve cavity and the third communication channel; the check valve spool is movably arranged in each check valve chamber, a first valve port is formed at the joint of the check valve chamber and the second communication channel, and the check valve spool is provided with a first plugging position for plugging the first valve port and a first opening position for opening the first valve port; a first elastic member that applies an elastic force toward the first port to each check valve element; the fire extinguishing agent spraying main pipeline is communicated with the spray head connecting channel under the condition that the control valve core is positioned at the second opening position; and a second elastic member for applying an elastic force toward the second port to each control valve spool.
In one embodiment, the ratio of the maximum value of the outer diameter of the control valve spool to the aperture diameter of the second port is between 2 and 3.
In one embodiment, the aperture of the second valve port and the channel inner diameter of the spray head connecting channel are greater than or equal to 6mm.
In an embodiment, visit firetube and start the trunk line and spout the trunk line with fire extinguishing agent and put the length direction n that the trunk line was followed the valve body and extend, a plurality of cavity units all are located visit firetube and start the trunk line and fire extinguishing agent and spout the top of putting the trunk line, and a plurality of cavity units are arranged along length direction n interval, the check valve cavity in each cavity unit is arranged along the width direction m interval of valve body with the control valve cavity, and the first intercommunication passageway in each cavity unit, visit firetube interface channel and shower nozzle interface channel all extend along width direction m.
In one embodiment, the valve body includes a valve body, a check valve plugging cover and a control valve plugging cover, a check valve mounting hole and a control valve mounting hole are provided on an outer surface of the valve body, the check valve plugging cover is plugged at an orifice of the check valve mounting hole to form a check valve chamber, the control valve plugging cover is plugged at an orifice of the control valve mounting hole to form a control valve chamber, the first elastic member abuts against between the check valve plugging cover and the check valve element, and the second elastic member abuts against between the control valve plugging cover and the control valve element.
In one embodiment, the check valve mounting hole comprises a first large-diameter section and a first necking section, a first valve port is formed at the opening part of the first necking section, which is far away from the first large-diameter section, the hole wall of the first necking section is a first conical surface, the check valve core is provided with a second conical surface matched with the first conical surface, and a first annular sealing ring is arranged between the first conical surface and the second conical surface; and/or the control valve mounting hole comprises a second large-diameter section and a second necking section, a mouth part of the second necking section, which is far away from the second large-diameter section, forms a second valve port, the hole wall of the second necking section is a third conical surface, the valve core of the control valve is provided with a fourth conical surface matched with the third conical surface, and a second annular sealing ring is arranged between the third conical surface and the fourth conical surface.
In one embodiment, a third annular sealing ring is arranged between the valve core of the control valve and the wall of the control valve mounting hole, and the third annular sealing ring is positioned below the first communication channel and the fire detection pipe connecting channel and above the spray head connecting channel in the extending direction of the control valve mounting hole.
In one embodiment, the first communicating channel and the fire detecting pipe connecting channel in each chamber unit are coaxial, the control valve mounting hole is divided into an upper hole section and a lower hole section by the first communicating channel and the fire detecting pipe connecting channel in the extending direction of the control valve mounting hole, the control valve plugging cover is positioned in the upper hole section, the second valve port is positioned on the lower hole section, and the upper end of the lower hole section is provided with a chamfer.
In one embodiment, the check valve case is provided with mounting groove on being close to the surface of check valve capping, and first elastic component sets up in mounting groove, is provided with a plurality of disappointing holes with the mounting groove intercommunication on the lateral wall of check valve case.
In one embodiment, the first communication channel and the fire detection tube connecting channel in each chamber unit are coaxial.
In one embodiment, a start joint is provided at the first air inlet; and/or a fire extinguishing agent pipe joint is arranged at the second air inlet.
In one embodiment, a fire detecting pipe joint is arranged at the connecting channel of the fire detecting pipe; and/or a spray pipe joint is arranged at the position of the spray head connecting channel.
According to another aspect of the present invention, there is provided a fire extinguishing apparatus comprising: the fire extinguishing storage bottle comprises a bottle body, a container valve and a release pipe, wherein the container valve and the release pipe are arranged on the bottle body; the fire detecting pipe starting main pipeline of the valve group is connected with the container valve, and the fire extinguishing agent spraying main pipeline of the valve group is connected with the release pipe; the fire detection pipe is communicated with the fire detection pipe connecting channel of the valve group; and the spray head is communicated with the spray head connecting channel of the valve group.
By applying the technical scheme of the invention, the fire detecting tube and the spray head in each protection area are respectively connected with the fire detecting tube connecting channel and the spray head connecting channel in the corresponding cavity unit of the valve group. When the fire detecting pipe in one protection area is heated and broken, the pressure in the check valve chamber and the control valve chamber communicated with the fire detecting pipe connecting channel corresponding to the fire detecting pipe is reduced, so that the check valve core cannot be pressed by the first elastic piece in the chamber unit, the fire detecting pipe starts gas in the main pipeline to jack the check valve core, and the gas is discharged from the fire detecting pipe connecting channel after the check valve core is jacked, so that the container valve of the fire extinguishing storage bottle is opened. Once the container valve is opened, the fire extinguishing agent in the fire extinguishing storage bottle enters the main extinguishing agent discharge pipe. The fire extinguishing agent entering the fire extinguishing agent spraying main pipeline can push the control valve spool in the control valve chamber with pressure released to the second opening position, so that the fire extinguishing agent can be sprayed out through the nozzle connecting channel, and finally sprayed to the corresponding protection area through the nozzle connected with the nozzle connecting channel, and the purpose of extinguishing fire in the protection area is achieved. In addition, according to the present invention, the valve body of the control valve abuts against the second valve port by the resultant force of the gas pressure in the control valve chamber and the elastic force of the second elastic member. The upward pressure applied by the fire extinguishing agent in the main fire extinguishing agent spraying pipeline to the valve core of the control valve is smaller than the resultant force, so that the fire extinguishing agent can push the valve core of the control valve to move to the second opening position only when the pressure of the control valve chamber in the chamber unit corresponding to the protected area on fire is released. For the chamber units corresponding to other protection areas which are not ignited, the control valve chamber still has preset pressure, so even if the fire extinguishing agent applies upward ejection force to the valve core of the control valve, the valve core of the control valve still keeps at the second blocking position under the resultant force of the chamber pressure and the elastic force, and finally the fire extinguishing agent is not sprayed in the protection areas which are not ignited. Therefore, the structure can realize the purpose of extinguishing fire in a specific protection area, the fire extinguishment among a plurality of protection areas is not interfered with each other, and the phenomenon that the fire extinguishing agent is sprayed into the protection areas which are not on fire cannot occur. In conclusion, the technical scheme of this embodiment is used, a scheme that one set of fire extinguishing apparatus protects a plurality of spaces to be put out a fire through a mechanical control mode is realized, and the product of this scheme is simple in structure, high in reliability and low in cost.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic view of a prior art fire suppression apparatus;
figure 2 shows a schematic perspective view of an embodiment of a valve group according to the present invention;
fig. 3 shows a schematic top view of the valve block of fig. 2;
FIG. 4 shows a cross-sectional view in the direction I-I of the valve block of FIG. 3;
fig. 5 shows an enlarged structural view at a of the valve group of fig. 4;
figure 6 shows an enlarged structural schematic at B of the valve group of figure 4;
FIG. 7 shows a cross-sectional view in the L-L direction of the valve block of FIG. 3; and
fig. 8 shows a cross-sectional view in the direction K-K of the valve block of fig. 3.
Wherein the figures include the following reference numerals:
10. a valve body; 11. a valve body; 12. a check valve plugging cover; 13. a control valve plugging cover; 20. starting the main pipeline by the fire detecting pipe; 30. a main fire extinguishing agent spraying pipeline; 40. a chamber unit; 41. a check valve chamber; 411. a first conical surface; 42. a control valve chamber; 421. a third conical surface; 422. chamfering; 43. a first communicating passage; 44. the fire detecting pipe is connected with the channel; 45. a nozzle connecting passage; 46. a second communicating passage; 47. a third communicating passage; 48. a first valve port; 49. a second valve port; 50. a check valve spool; 51. installing a groove; 52. an air release hole; 60. a first elastic member; 70. a control valve spool; 80. a second elastic member; 90. a first annular seal ring; 100. a second annular seal ring; 110. a third annular seal ring; 120. starting the joint; 130. a fire extinguishing agent pipe joint; 140. a fire detection pipe joint; 150. and (5) spraying a pipeline joint.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 2 to 8, the valve block of the present embodiment includes: the fire extinguishing agent spraying device comprises a valve body 10, a fire detecting pipe starting main pipe 20, a fire extinguishing agent spraying main pipe 30, a chamber unit 40, a check valve core 50, a first elastic piece 60, a control valve core 70 and a second elastic piece 80. Wherein, a fire detecting pipe starting main pipe 20 is provided on the valve body 10, and the fire detecting pipe starting main pipe 20 has a first air inlet on an outer surface of the valve body 10. The main extinguishing agent discharging pipe 30 is provided on the valve body 10 and spaced apart from the main fire detecting pipe starting pipe 20, and the main extinguishing agent discharging pipe 30 has a second air inlet on the outer surface of the valve body 10. The chamber units 40 are arranged on the valve body 10 at intervals, each chamber unit 40 comprises a check valve chamber 41, a control valve chamber 42, a first communication channel 43 for communicating the check valve chamber 41 with the control valve chamber 42, a fire detecting pipe connecting channel 44 and a nozzle connecting channel 45 for communicating the control valve chamber 42 with the outside atmosphere, a second communication channel 46 for communicating the check valve chamber 41 with the fire detecting pipe starting main pipe 20, and a third communication channel 47 for communicating the control valve chamber 42 with the fire extinguishing agent discharging main pipe 30, and a communication port of the nozzle connecting channel 45 communicated with the control valve chamber 42 is located between a communication port of the fire detecting pipe connecting channel 44 communicated with the control valve chamber 42 and the third communication channel 47. Each check valve chamber 41 has a movable check valve spool 50 disposed therein, the junction of the check valve chamber 41 and the second communication passage 46 forming a first port 48, the check valve spool 50 having a first blocking position blocking the first port 48 and a first open position opening the first port 48. The first elastic member 60 applies an elastic force to each check valve spool 50 toward the first port 48. Each control valve chamber 42 is provided with a movable control valve spool 70, the control valve spool 70 separates the first communication channel 43 and the fire detecting pipe connecting channel 44 from the spray head connecting channel 45 and the main fire extinguishing agent discharging pipeline 30, the second valve port 49 is formed at the connection position of the control valve chamber 42 and the third communication channel 47, the control valve spool 70 is provided with a second blocking position for blocking the second valve port 49 and a second opening position for opening the second valve port 49, and the main fire extinguishing agent discharging pipeline 30 is communicated with the spray head connecting channel 45 under the condition that the control valve spool 70 is located at the second opening position. The second elastic member 80 applies an elastic force to each control valve spool 70 toward the second port 49.
By applying the technical solution of this embodiment, the fire detecting tube and the spray head in each protection area are respectively connected with the fire detecting tube connecting channel 44 and the spray head connecting channel 45 in the chamber unit 40 corresponding to the valve group. When the fire detecting tube in one of the protection areas is heated and broken, the pressure in the check valve chamber 41 and the control valve chamber 42 communicated with the fire detecting tube connecting channel 44 corresponding to the fire detecting tube is reduced, so that the check valve core 50 cannot be pressed by the first elastic member 60 in the chamber unit 40, the fire detecting tube starts the gas in the main pipe 20 to jack up the check valve core 50, and the gas is discharged from the fire detecting tube connecting channel 44 after the check valve core 50 is jacked up, so that the container valve of the fire extinguishing storage bottle is opened. Once the container valve is opened, the fire suppressant in the fire suppressant reservoir will enter the main fire suppressant discharge line 30. The fire extinguishing agent entering the main fire extinguishing agent discharge pipeline 30 can push the control valve spool 70 in the control valve chamber 42 with the pressure released to the second open position, so that the fire extinguishing agent can be sprayed out from the nozzle connecting channel 45, and finally is sprayed to the corresponding protection area through the nozzle connected with the nozzle connecting channel 45, thereby achieving the purpose of extinguishing the fire in the protection area. In addition, according to the present embodiment, the control valve spool 70 is abutted against the second port 49 by the resultant force of the gas pressure in the control valve chamber 42 and the elastic force of the second elastic member 80. The fire extinguishing agent in the main fire extinguishing agent discharging pipe 30 exerts an upward pressure on the control valve spool 70 that is less than the resultant force, so that the fire extinguishing agent pushes the control valve spool 70 to move to the second open position only when the pressure of the control valve chamber 42 in the chamber unit 40 corresponding to the protected area on fire is released. For the chamber units 40 corresponding to other un-ignited protected areas, because the control valve chamber 42 still has a preset pressure, even if the fire extinguishing agent exerts an upward pushing force on the control valve spool 70, the control valve spool 70 is still kept at the second blocking position under the combined force of the chamber pressure and the elastic force, and finally, the fire extinguishing agent is not sprayed in the un-ignited protected areas. Therefore, the structure can realize the purpose of extinguishing fire for a specific protection area, the fire extinguishment among a plurality of protection areas is not interfered with each other, and the phenomenon that the fire extinguishing agent is sprayed into the protection areas which are not on fire cannot occur. To sum up, use the technical scheme of this embodiment, realized that one set of extinguishing device passes through the mechanical control mode, protects a plurality of schemes of being put out a fire the space to the product simple structure of this scheme, the reliability is high, and is with low costs.
Preferably, the first elastic member 60 and the second elastic member 80 are both springs.
It should be noted that the valve set shown in the drawings can protect three protection zones, and in other embodiments, two chamber units 40 or more than 3 chamber units 40 may be provided to meet the requirements of different numbers of protection zones.
As shown in fig. 2, in the present embodiment, a starting joint 120 is provided at the first air inlet. The second air inlet is provided with a fire extinguishing agent pipe joint 130. Above-mentioned structure makes valves and the storage bottle of putting out a fire can high-speed joint, improves connection efficiency. Of course, in other embodiments not shown in the figures, the activation fitting may be provided only at the first air inlet, or the fire suppressant pipe fitting may be provided only at the second air inlet.
As shown in fig. 2, in the present embodiment, a fire detecting pipe joint 140 is disposed at the fire detecting pipe connecting channel 44. A spray pipe joint 150 is arranged at the spray head connecting passage 45. The structure enables the valve group, the fire detecting pipe and the spray head to be quickly connected, so that the connection efficiency is improved. Of course, in other embodiments not shown in the figures, a fire detector pipe joint may be provided only at the fire detector pipe connecting passage, or a blow-off pipe joint may be provided only at the spray head connecting passage.
The connection process and state of the valve group and the fire-extinguishing storage bottle are described in detail as follows:
first, the starting connector 120 and the fire extinguishing agent pipe connector 130 are firmly connected to the container valve and the release pipe of the fire extinguishing storage bottle, respectively. When the connection is stable, the fire detecting pipe starts the main pipe 20 to intake air. The gas entering the flame-detecting pipe activation main pipe 20 is branched into each second communication passage 46 and pushes up each check valve spool 50 to the first open position. When each check valve spool 50 moves to the first open position, gas within each second communication channel 46 will enter the corresponding check valve chamber 41 and control valve chamber 42 through the corresponding first port 48. After each check valve spool 50 is moved to the first open position for a certain time, each check valve spool 50 is restored to the first blocking position by the gas pressure and the elastic force of the first elastic member 60. The above-described process is a process of pressurizing the check valve chamber 41 and the control valve chamber 42 of each chamber unit 40.
In the present embodiment, the ratio of the maximum value of the outer diameter of the control valve spool 70 to the bore diameter of the second port 49 is between 2 and 3. Specifically, in this embodiment, the control valve core 70 is a columnar rotator, the lower surface of the control valve core 70 closes the second valve port 49, the area of the upper surface of the control valve core 70 is larger than that of the lower surface, and the difference in the upper and lower areas allows the remaining control valve chambers 42 that are not releasing pressure to have sufficient force to push against the pressure during spraying when the fire extinguishing agent is sprayed, i.e., to ensure that the control valve core 70 in the chamber unit 40 corresponding to the protection area that is not on fire is not pushed open by the fire extinguishing agent. Preferably, in the present embodiment, the ratio of the maximum value of the outer diameter of the control valve spool 70 to the hole diameter of the second port 49 is 2.1.
In this embodiment, the diameter of the second valve port 49 and the inner diameter of the nozzle connecting passage 45 are 6mm or more. The above structure can ensure that the liquid fire extinguishing agent can be smoothly sprayed out through the second valve port 49 and the head connecting passage 45.
As shown in fig. 2 to 4, 7 and 8, in the present embodiment, the main fire detecting pipe starting pipe 20 and the main fire extinguishing agent discharging pipe 30 extend along the length direction n of the valve body 10, the plurality of chamber units 40 are all located above the main fire detecting pipe starting pipe 20 and the main fire extinguishing agent discharging pipe 30, the plurality of chamber units 40 are arranged at intervals along the length direction n, the check valve chambers 41 and the control valve chambers 42 in each chamber unit 40 are arranged at intervals along the width direction m of the valve body 10, and the first communication channel 43, the fire detecting pipe connecting channel 44 and the nozzle connecting channel 45 in each chamber unit 40 extend along the width direction m. The structure enables the fire detecting pipe to start the main pipeline 20, the fire extinguishing agent spraying main pipeline 30 and each cavity unit 40 to be reasonable in layout, facilitates gas-liquid circulation and guarantees fire extinguishing effect. In addition, the above structure facilitates the processing of the valve body 10. It should be noted that the main fire detecting pipe starting pipe 20 and the main fire extinguishing agent discharging pipe 30 are located below the plurality of chamber units 40 in the height direction o. The width direction m, the length direction n, and the height direction o are perpendicular to each other.
As shown in fig. 2 to 4, 7 and 8, in the present embodiment, the valve body 10 includes a valve body 11, a check valve plugging cover 12 and a control valve plugging cover 13, a check valve mounting hole and a control valve mounting hole are provided on an outer surface of the valve body 11, the check valve plugging cover 12 is plugged at an orifice of the check valve mounting hole to form a check valve chamber 41, the control valve plugging cover 13 is plugged at an orifice of the control valve mounting hole to form a control valve chamber 42, the first elastic member 60 abuts between the check valve plugging cover 12 and the check valve core 50, and the second elastic member 80 abuts between the control valve plugging cover 13 and the control valve core 70. The structure is simple, the check valve plugging cover 12 plays a role of limiting the check valve core 50, and the control valve plugging cover 13 plays a role of limiting the control valve core 70.
As shown in fig. 4 and 5, in the present embodiment, the check valve mounting hole includes a first large diameter section and a first neck-reducing section, a mouth of the first neck-reducing section far from the first large diameter section forms the first valve port 48, a hole wall of the first neck-reducing section is a first tapered surface 411, the check valve core 50 has a second tapered surface adapted to the first tapered surface 411, and a first annular sealing ring 90 is disposed between the first tapered surface 411 and the second tapered surface. Specifically, the first annular sealing ring 90 is engaged with the first tapered surface 411 and has a certain amount of compression to achieve a sealing effect. When the check valve spool 50 is in the first blocking position, the main fire detecting pipe starting pipe 20 and the second communication passage 46 form a first space, and the portion of the check valve chamber 41 above the first annular seal ring 90, the control valve chamber 42, the first communication passage 43, and the fire detecting pipe connection passage 44 form a second space, which are independent of each other. Thus, when a certain protection area catches fire, the pressure of the first space and the second space corresponding to the protection area is reduced, the pressure in the second space corresponding to the protection area which does not catch fire can be sealed through the first annular sealing ring 90 without leakage, the purpose that fire extinguishment among a plurality of protection areas is not interfered with each other is achieved, and the phenomenon that fire extinguishing agents are sprayed into the protection area which does not catch fire is avoided.
As shown in fig. 4 and 6, in the present embodiment, the control valve mounting hole includes a second large diameter section and a second neck-down section, a mouth portion of the second neck-down section far from the second large diameter section forms the second valve port 49, a hole wall of the second neck-down section is a third conical surface 421, the control valve spool 70 has a fourth conical surface adapted to the third conical surface 421, and a second annular sealing ring 100 is disposed between the third conical surface 421 and the fourth conical surface. Specifically, the second annular sealing ring 100 is engaged with the third conical surface 421 and has a certain amount of compression to achieve the sealing effect. The structure enables that, after the fire extinguishing agent enters the main fire extinguishing agent spraying pipe line 30, for the control valve mounting hole corresponding to the protection area not on fire, the second annular sealing ring 100 can seal the third conical surface 421 and the fourth conical surface, so as to prevent the fire extinguishing agent from entering the spraying pipe joint 150 corresponding to the protection area not on fire through the gap between the third conical surface 421 and the fourth conical surface, thereby realizing the purpose of mutual noninterference of fire extinguishing between a plurality of protection areas, and avoiding the generation of the phenomenon of spraying the fire extinguishing agent into the protection area not on fire. Of course, in other embodiments not shown in the figures, only the first annular sealing ring or only the second annular sealing ring may be provided.
As shown in fig. 4 and 6, in the present embodiment, a third annular seal ring 110 is provided between the control valve spool 70 and the wall of the control valve mounting hole, and the third annular seal ring 110 is located below the first communication passage 43 and the flame detecting pipe connection passage 44 and above the head connection passage 45 in the extending direction of the control valve mounting hole. The above structure prevents the fire extinguishing agent from entering the first communication passage 43 and the fire detecting pipe connection passage 44 when the control valve spool 70 is moved to the second open position, and prevents the fire extinguishing agent from being discharged from the fire detecting pipe joint 140. The second space is actually formed by a portion above the first annular seal 90 of the check valve chamber 41, a portion above the third annular seal 110 of the control valve chamber 42, the first communication passage 43, and the flame-sounding pipe connection passage 44.
As shown in fig. 4, in the present embodiment, the first communication passage 43 and the fire detecting pipe connection passage 44 in each chamber unit 40 are coaxial. The above structure allows smooth gas flow and facilitates discharge from the fire detecting pipe connecting passage 44, and in addition, the above structure facilitates processing.
As shown in fig. 4 and 6, the control valve installation hole is divided into an upper hole section and a lower hole section in the extending direction thereof by the first communicating channel 43 and the fire detecting pipe connecting channel 44, the control valve blocking cover 13 is located in the upper hole section, the second valve port 49 is located on the lower hole section, and the upper end of the lower hole section is provided with a chamfer 422. Specifically, a seal ring mounting groove is provided on an outer side wall of the control valve spool 70, and a third annular seal ring 110 is disposed in the seal ring mounting groove. When the control valve spool 70 is fitted into the control valve mounting hole, the position where the control valve mounting hole is connected to the first communication passage 43 and the fire detecting pipe connection passage 44 may severely compress the third annular seal ring 110, causing the third annular seal ring 110 to be damaged and thus not sealing. Therefore, the chamfer 422 is added, so that the third annular sealing ring 110 can smoothly slide into the lower hole section through the chamfer 422, and the ring cutting phenomenon is prevented.
As shown in fig. 4 and 5, in the present embodiment, a mounting groove 51 is provided on a surface of the check valve spool 50 adjacent to the check valve blocking cover 12, and the first elastic member 60 is disposed in the mounting groove 51. A closed space is formed between the mounting groove 51 and the wall of the check valve chamber 41, which results in the need for compressed air during the upward movement of the check valve spool 50, resulting in difficulty in the upward movement of the check valve spool 50. In order to solve the above problem, as shown in fig. 5, in the present embodiment, a plurality of relief holes 52 communicating with the mounting groove 51 are provided on the outer side wall of the check valve spool 50. The structure enables the gas between the installation groove 51 and the cavity wall of the check valve cavity 41 to be discharged through the plurality of air release holes 52 in the process of moving the check valve core 50 upwards, so that the gas is quickly expelled, and the smoothness of the upward movement of the check valve core 50 is improved.
Several points need to be explained in further detail below:
1. the starting joint 120 and the fire extinguishing agent pipe joint 130 of the valve block are firmly connected with the container valve and the release pipe of the fire extinguishing storage bottle, respectively. When the pressure in the fire extinguishing reservoir is introduced into the check valve chamber 41, the check valve core 50 is pushed upward by the pressure until it is coupled to the check valve plugging cap 12, and the pressures of the check valve chamber 41, the portion of the control valve chamber 42 above the third o-ring 110, the fire detecting pipe connection channel 44, and the fire detecting pipe in the protection area connected to the fire detecting pipe connection channel 44 are the same, at which time the check valve core 50 is moved downward by the pressure of the first elastic member 60 until it is coupled to the valve body 10, so that the pressures in the first space and the second space are independent of each other.
2. After the pressures of the check valve chamber 41, the portion of the control valve chamber 42 above the third o-ring 110, the fire detecting pipe connecting passage 44, and the fire detecting pipe in the protection area connected to the fire detecting pipe connecting passage 44 are the same, the elastic force of the second elastic member 80 and the pressure of the portion of the control valve chamber 42 above the third o-ring 110 may make the control valve core 70 of the passage where the fire detecting pipe in the protection area is not softened and exploded immovable.
3. The fire detecting pipe in a certain protection area is softened and exploded, so that the pressure of the part above the third annular sealing ring 110 of the check valve chamber 41 and the control valve chamber 42, the pressure of the fire detecting pipe connecting channel 44 and the pressure of the part of the fire detecting pipe in the protection area connected with the fire detecting pipe connecting channel 44 are quickly leaked, the check valve core 50 is quickly pushed by the pressure in the fire detecting pipe starting main pipe 20, the pressure is leaked out, the container valve is opened, the fire extinguishing agent starts to be sprayed along the fire extinguishing agent spraying main pipe 30, the control valve core 70 of the channel softened and exploded by the fire detecting pipe is pushed to move upwards, and the fire extinguishing agent starts to be sprayed.
An example is described in detail below:
the first elastic member has a size of 0.8 × 8 × 15 (mm), an elastic force of 12N in an initial state, and an elastic force of 22N after being compressed;
the second elastic member has a size of 1.2 × 10 × 30 (mm), an elastic force of 19.5N in an initial state, and an elastic force of 58N after being compressed;
if the volume of the gas cylinder is 3L, the filling pressure is 2.5MPa, and the filling amount of perfluorohexanone is 3 Kg.
After the fire detecting tube in a certain protection area is softened and exploded, the valve core 50 of the check valve of the corresponding channel is positionedThe cross-sectional area of the pressure instantaneously exerted by the gas cylinder is 70.88mm 2 The pressure in the cylinder is 2.5MPa, and 1.6MPa after the pressure is reduced by the container valve, so the pressure entering the check valve chamber 41 is 1.6MPa, the instant force is 113N, which is much greater than the elastic force of the spring, and the check valve core 50 can be pushed quickly.
The channel without fire extinguishing agent is not sprayed, the control valve core 70 is not moved, at this time, the part above the third annular sealing ring 110 of the control valve chamber 42 is kept consistent with the pressure in the check valve chamber 41 and is 1.6MPa, the size of the second elastic part is 1.2 x 10 x 30 (mm), the elastic force is 19.5N in the initial state, and therefore the cross section area of the pressure applied to the top of the control valve core 70 is 314.16mm 2 The force given by the gas is 294.52N, and the force applied by the spring is 313.65N.
After the fire detecting tube in a certain protection area is softened and blasted, the sectional area of the pressure applied to the control valve core 70 of the corresponding channel by the gas cylinder at one moment is 70.88mm 2 The pressure in the cylinder is 2.5MPa, the instantaneous force is 177N, and the valve core 70 of the control valve in the channel which is not sprayed can not be pushed.
As long as the check valve core 50 moves, the fire extinguishing agent pushes the control valve core 70 to be sprayed all the time, so that the force applied to the control valve core 70 after the fire extinguishing agent is sprayed is calculated at last.
After the fire extinguishing agent is sprayed, according to the ideal gas state formula, the pressure in the gas cylinder is 0.94MPa, and the cross section area of the valve core 70 of the control valve under the pressure in the gas cylinder is 314.16mm 2 The thrust force is 295N, which is much larger than the elastic force of the spring, so the valve core 70 of the control valve is always in the state of being attached to the blocking cover 13 of the control valve in the process of spraying the fire extinguishing agent.
The present application further provides a fire extinguishing apparatus, an embodiment of a fire extinguishing apparatus according to the present application includes: the fire extinguishing device comprises a fire extinguishing storage bottle, a valve group, a fire detecting pipe and a spray head. Wherein, the storage bottle of putting out a fire includes the bottle body and sets up container valve and the release pipe on the bottle body. The valve group is the valve group, the fire detecting pipe starting main pipeline 20 of the valve group is connected with the container valve, and the fire extinguishing agent spraying main pipeline 30 of the valve group is connected with the releasing pipe. The flame probe tube communicates with the flame probe tube connection channel 44 of the valve block. The spray head communicates with a spray head connection channel 45 of the valve block. Because above-mentioned valves have simple structure, the reliability is high, advantage with low costs, consequently the extinguishing device who has it also has above-mentioned advantage.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A valve manifold, comprising:
a valve body (10);
a fire detecting pipe starting main pipe (20) arranged on the valve body (10), wherein the fire detecting pipe starting main pipe (20) is provided with a first air inlet positioned on the outer surface of the valve body (10);
the fire extinguishing agent spraying main pipeline (30) is arranged on the valve body (10) and is arranged at a distance from the fire detecting pipe starting main pipeline (20), and the fire extinguishing agent spraying main pipeline (30) is provided with a second air inlet positioned on the outer surface of the valve body (10);
the chamber units (40) are arranged on the valve body (10) at intervals, each chamber unit (40) comprises a check valve chamber (41), a control valve chamber (42), a first communication channel (43) for communicating the check valve chamber (41) with the control valve chamber (42), a fire detection pipe connecting channel (44) and a spray head connecting channel (45) for communicating the control valve chamber (42) with the outside atmosphere, a second communication channel (46) for communicating the check valve chamber (41) with the fire detection pipe starting main pipe (20), and a third communication channel (47) for communicating the control valve chamber (42) with the fire extinguishing agent spraying main pipe (30), and a communication port of the spray head connecting channel (45) with the control valve chamber (42) is located between a communication port of the fire detection pipe connecting channel (44) with the control valve chamber (42) and the third communication channel (47);
a check valve spool (50) disposed movably in each of the check valve chambers (41), a junction of the check valve chamber (41) and the second communication passage (46) forming a first valve port (48), the check valve spool (50) having a first blocking position blocking the first valve port (48) and a first open position opening the first valve port (48);
a first elastic member (60) that applies an elastic force to each check valve spool (50) toward the first port (48);
a control valve spool (70), each control valve chamber (42) is provided with the movable control valve spool (70), the control valve spool (70) separates the first communication channel (43) and the fire detecting pipe connection channel (44) from the spray head connection channel (45) and the fire extinguishing agent discharging main pipeline (30), the connection part of the control valve chamber (42) and the third communication channel (47) forms a second valve port (49), the control valve spool (70) has a second blocking position for blocking the second valve port (49) and a second opening position for opening the second valve port (49), and the fire extinguishing agent discharging main pipeline (30) is communicated with the spray head connection channel (45) under the condition that the control valve spool (70) is located at the second opening position;
and a second elastic member (80) that applies an elastic force to each control valve spool (70) toward the second valve port (49).
2. Valve group according to claim 1, characterized in that the ratio between the maximum value of the outer diameter of the control valve spool (70) and the bore diameter of the second valve port (49) is between 2 and 3; and/or the aperture of the second valve port (49) and the inner diameter of the spray head connecting channel (45) are larger than or equal to 6mm.
3. Valve group according to claim 2, characterized in that the main fire detecting tube starting tube (20) and the main fire extinguishing agent discharging tube (30) extend in the length direction n of the valve body (10), a plurality of chamber units (40) are located above the main fire detecting tube starting tube (20) and the main fire extinguishing agent discharging tube (30), and the plurality of chamber units (40) are arranged at intervals in the length direction n, the check valve chamber (41) and the control valve chamber (42) in each chamber unit (40) are arranged at intervals in the width direction m of the valve body (10), and the first communicating channel (43), the fire detecting tube connecting channel (44) and the nozzle connecting channel (45) in each chamber unit (40) extend in the width direction m.
4. The valve group according to claim 1, wherein the valve body (10) comprises a valve body (11), a check valve plugging cover (12) and a control valve plugging cover (13), a check valve mounting hole and a control valve mounting hole are arranged on the outer surface of the valve body (11), the check valve plugging cover (12) is plugged at the orifice of the check valve mounting hole to form the check valve chamber (41), the control valve plugging cover (13) is plugged at the orifice of the control valve mounting hole to form the control valve chamber (42), the first elastic member (60) abuts between the check valve plugging cover (12) and the check valve core (50), and the second elastic member (80) abuts between the control valve plugging cover (13) and the control valve core (70).
5. The valve group of claim 4, wherein the check valve mounting hole comprises a first large diameter section and a first necked-down section, a mouth of the first necked-down section far away from the first large diameter section forms the first valve port (48), a hole wall of the first necked-down section is a first conical surface (411), the check valve spool (50) has a second conical surface adapted to the first conical surface (411), and a first annular sealing ring (90) is arranged between the first conical surface (411) and the second conical surface; and/or the presence of a gas in the gas,
the control valve mounting hole comprises a second large-diameter section and a second necking section, a mouth portion, far away from the second large-diameter section, of the second necking section forms the second valve port (49), a hole wall of the second necking section is a third conical surface (421), the control valve spool (70) is provided with a fourth conical surface matched with the third conical surface (421), and a second annular sealing ring (100) is arranged between the third conical surface (421) and the fourth conical surface.
6. Valve group according to claim 4, characterized in that a third annular sealing ring (110) is arranged between the control valve spool (70) and the wall of the control valve mounting hole, which third annular sealing ring (110) is located below the first communication channel (43) and the flame detector tube connection channel (44) and above the spray head connection channel (45) in the direction of extension of the control valve mounting hole.
7. The valve group according to claim 6, wherein the first communication passage (43) and the fire detecting tube connection passage (44) in each chamber unit (40) are coaxial, the control valve installation hole is divided into an upper hole section and a lower hole section in an extending direction thereof by the first communication passage (43) and the fire detecting tube connection passage (44), the control valve blocking cover (13) is located in the upper hole section, the second valve port (49) is located on the lower hole section, and an upper end of the lower hole section is provided with a chamfer (422).
8. The valve manifold according to claim 4, wherein a mounting groove (51) is provided on a surface of the check valve spool (50) adjacent to the check valve blocking cover (12), the first elastic member (60) is disposed in the mounting groove (51), and a plurality of relief holes (52) communicating with the mounting groove (51) are provided on an outer sidewall of the check valve spool (50).
9. Valve group according to claim 1, characterized in that at the first inlet there is provided a starting nipple (120); and/or a fire extinguishing agent pipe joint (130) is arranged at the second air inlet; and/or a fire detection pipe joint (140) is arranged at the fire detection pipe connecting channel (44); and/or a spraying pipeline joint (150) is arranged at the spray head connecting passage (45).
10. A fire suppression apparatus, comprising:
the fire-extinguishing storage bottle comprises a bottle body, a container valve and a release pipe, wherein the container valve and the release pipe are arranged on the bottle body;
valve group, characterized in that it is a valve group according to any of claims 1 to 9, the main fire-finding pipe activation line (20) of which is connected to the container valve and the main fire-extinguishing agent discharge line (30) of which is connected to the release line;
a flame probe tube communicating with a flame probe tube connection channel (44) of the valve block;
and the spray head is communicated with a spray head connecting channel (45) of the valve group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211049279.3A CN115382138B (en) | 2022-08-30 | 2022-08-30 | Valve group and fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211049279.3A CN115382138B (en) | 2022-08-30 | 2022-08-30 | Valve group and fire extinguishing device |
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| Publication Number | Publication Date |
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| CN115382138A true CN115382138A (en) | 2022-11-25 |
| CN115382138B CN115382138B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211049279.3A Active CN115382138B (en) | 2022-08-30 | 2022-08-30 | Valve group and fire extinguishing device |
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| CN2628091Y (en) * | 2003-06-20 | 2004-07-28 | 南京消防器材股份有限公司 | Fire probe automatic fire extinguisher |
| RU2460561C1 (en) * | 2011-09-09 | 2012-09-10 | Олег Савельевич Кочетов | Modular system of fire fighting |
| US8727029B2 (en) * | 2009-09-10 | 2014-05-20 | The Viking Corporation | Trim manifold assembly for a sprinkler system |
| CN209270681U (en) * | 2018-10-25 | 2019-08-20 | 福建天广消防有限公司 | A kind of direct-type spy fire tube fire extinguisher |
| CN112032379A (en) * | 2020-07-22 | 2020-12-04 | 浙江蓝盾电工新材料科技有限公司 | Multidimensional starting container valve |
| CN112354110A (en) * | 2020-10-27 | 2021-02-12 | 上海纽特消防设备有限公司 | Fire detection tube type fire extinguishing device distribution valve |
-
2022
- 2022-08-30 CN CN202211049279.3A patent/CN115382138B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628091Y (en) * | 2003-06-20 | 2004-07-28 | 南京消防器材股份有限公司 | Fire probe automatic fire extinguisher |
| US8727029B2 (en) * | 2009-09-10 | 2014-05-20 | The Viking Corporation | Trim manifold assembly for a sprinkler system |
| RU2460561C1 (en) * | 2011-09-09 | 2012-09-10 | Олег Савельевич Кочетов | Modular system of fire fighting |
| CN209270681U (en) * | 2018-10-25 | 2019-08-20 | 福建天广消防有限公司 | A kind of direct-type spy fire tube fire extinguisher |
| CN112032379A (en) * | 2020-07-22 | 2020-12-04 | 浙江蓝盾电工新材料科技有限公司 | Multidimensional starting container valve |
| CN112354110A (en) * | 2020-10-27 | 2021-02-12 | 上海纽特消防设备有限公司 | Fire detection tube type fire extinguishing device distribution valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115382138B (en) | 2023-04-28 |
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