Selector valve and active and passive row type automatic fire extinguishing charging and battery replacing cabinet using same

Abstract

The utility model relates to a selector valve and an active and passive row type automatic fire extinguishing charging cabinet using the same, the selector valve is formed by connecting a plurality of electric heating starting valves in series, each electric heating starting valve comprises a valve body, a valve core and a hot starting device, the valve body is provided with a through hole and is provided with a discharge channel capable of being communicated with the through hole, one end of the valve core extends into the through hole, and the other end of the valve core extends into the hot starting device. The hot starting device comprises a fixing frame and a temperature sensing glass ball, the fixing frame is fixedly connected with the valve body, a placing base capable of abutting against the temperature sensing glass ball is arranged on the top of the fixing frame, and a limiting sliding hole with one end opening facing the placing base and the other end opening facing the through hole is further formed in the top of the fixing frame. The two ends of the temperature sensing glass ball abut against the bearing groove and the containing base respectively, and the axis of the temperature sensing glass ball is not coaxial with the axis of the valve element. A special temperature-sensing glass ball inclined structure is used to ensure that a fire extinguishing agent passage is smooth, and through the selector valve structure, the active and passive row type charging and replacing electric cabinets can be ensured to extinguish fire respectively, so that the fire can be quickly responded to extinguish fire.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting equipment, and in particular to a selection valve and an active-passive coupling type automatic fire-fighting charging and swapping cabinet using the valve. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, the use of electric vehicles for travel has become popular in the streets and alleys. However, with the fire accidents caused by electric vehicles going upstairs in recent years, people are distressed. In order to improve this problem, it is currently vigorously promoting the establishment of charging and swapping cabinets for charging electric vehicle batteries. Because the number of electric vehicles is large, in order to increase the number of charging and swapping cabinets, multiple cabinets are usually installed in a row. However, there is also a problem of spontaneous combustion of batteries in the charging and swapping cabinets, which leads to fire and property losses. Therefore, it is necessary to equip corresponding fire extinguishing equipment. Commonly, a set of fire extinguishing equipment is used. The fire extinguishing agent is sprayed to different cabinets by installing a selection valve. Since the battery ignition time is short and the fire spreads rapidly, the passage for the fire extinguishing agent to flow must be unobstructed to avoid blockage or the valve not being fully opened, which may delay the fire extinguishing time. However, the existing hot-start selection valve usually uses a temperature-sensitive glass ball that can easily cause the valve core to be stuck at the moment of operation, resulting in the passage not being completely unobstructed, which may delay the control of the fire. In view of this, the present application proposes a hot-start selection valve that can avoid valve core blockage and an active and passive parallel-type automatic fire extinguishing charging and swapping cabinet that can respond quickly to a fire and quickly implement fire extinguishing. Utility Model Content

[0003] In order to solve the above technical problems, the utility model discloses a selection valve, which is composed of a plurality of electrically-heated start valves connected in series, the electrically-heated start valve comprising a valve body, a valve core and a heat start device, the valve body is provided with a through hole penetrating the top and bottom, and the valve body is provided with a discharge channel that can be connected with the through hole on two opposite sides, the valve core is a columnar structure matching the shape of the through hole, one end of which extends into the through hole and forms a blockage at the communication port between the discharge channel and the through hole, and the other end is exposed from the through hole and a receiving groove is provided on the end surface of the exposed end, the heat start device It includes a fixing frame and a temperature-sensitive glass ball. The fixing frame is fixedly connected to the valve body, and a placement seat capable of supporting the temperature-sensitive glass ball is provided on the top. A limiting sliding hole is also provided, with an opening at one end facing the placement seat and an opening at the other end facing the through hole. The exposed end of the valve core is slidably matched with the limiting sliding hole, and a receiving groove at the end faces the placement seat. The temperature-sensitive glass ball is capsule-shaped, and the two ends are respectively supported by the receiving groove and the placement seat. The axis of the temperature-sensitive glass ball is not coaxial with the axis of the valve core, and a supporting and blocking mechanism with an inclination angle is formed between the receiving groove and the placement seat.

[0004] Specifically, the valve core is provided with a flange and an annular groove. The flange is arranged along the circumference of the valve core at the junction of the part extending into the through hole and the exposed end to form a clamping ring that can be clamped at the mouth position. The annular grooves are arranged in pairs along the circumference of the valve core and are respectively located on both sides of the discharge channel mouth. A sealing ring that can fit tightly against the inner wall of the through hole is sleeved in the annular groove.

[0005] Specifically, the hot start device also includes a heating wire. The area on the fixed frame corresponding to the temperature-sensitive glass ball abutting the fixed frame is a hollow structure, forming an exposed area where the temperature-sensitive glass ball is exposed to the external environment. The heating wire is located in the exposed area and is arranged around the temperature-sensitive glass ball. The heating wire is connected to a power source to form a heating source.

[0006] Specifically, the relatively arranged discharge channels are respectively connected to the signal feedback device and the nozzle for spraying the fire extinguishing agent, the end of the through hole facing the bottom is connected to the pipeline for supplying the fire extinguishing agent, and the end facing the top is connected to the valve core.

[0007] Specifically, the angle between the axis of the temperature-sensitive glass ball and the axis of the valve core is 2°-5°.

[0008] Specifically, an active and passive parallel-type automatic fire extinguishing charging and swapping cabinet using a selection valve includes a fire extinguishing device and a charging and swapping cabinet. There are multiple charging and swapping cabinets, and the multiple charging and swapping cabinets are adjacently arranged in a parallel row to form a charging and swapping cabinet group. The top of each charging and swapping cabinet is provided with a nozzle with the nozzle facing the bottom. The fire extinguishing device and the selection valve are installed on the top of the charging and swapping cabinet group. The number of electrothermal start valves that constitute the selection valve is the same as the number of charging and swapping cabinets. The fire extinguishing device is connected to the through hole, and the nozzles are each connected to the discharge channel on a single electrothermal start valve to form a fire extinguishing agent flow channel.

[0009] Specifically, the charging and swapping cabinet is provided with a partition plate that divides the internal space into multiple subspaces, and the subspaces include a spray channel and storage spaces on both sides of the spray channel and close to its side walls. The partition plate is provided with a number of evenly arranged holes to form a ventilation plate through which gas can flow between the spray channel and the storage space.

[0010] Specifically, the spray channel and the storage space are both provided with independent cabinet doors, the spray head is arranged at the top of the spray channel space, and a composite detector is arranged at an adjacent position, and a temperature detector is arranged at the top of each storage space, and the composite detector and the temperature detector are both connected to the fire extinguishing device.

[0011] Specifically, the fire extinguishing device includes a fire extinguishing agent bottle group, a main control valve, a fire extinguishing agent delivery pipeline, a driving device, a leakage signal feedback device and a controller. The driving device and the leakage signal feedback device are sealed and installed at the bottle mouth of the fire extinguishing agent bottle group. The fire extinguishing agent delivery pipeline is respectively connected to the fire extinguishing agent bottle group and the selection valve, and a main control valve is arranged on the passage of the fire extinguishing agent delivery pipeline. The controller is respectively connected to the composite detector, the temperature detector, the main control valve, the driving device, the leakage signal feedback device and the selection valve through line electrical connection or signal connection to form a feedback control circuit.

[0012] Specifically, the fire extinguishing agent contained in the fire extinguishing agent bottle assembly is a gas fire extinguishing agent.

[0013] Advantages

[0014] The selector valve of the utility model uses a special temperature-sensitive glass ball tilting structure to prevent the valve core from getting stuck, thereby ensuring that the fire extinguishing agent passage is unobstructed, and by using a receiving groove and a placement seat, it can be ensured that the tilted glass ball can be stably positioned against the valve core; by using the selector valve structure, it can be ensured that the active and passive parallel-connected charging and swapping cabinets can extinguish fires separately, and through the internal structure of the charging and swapping cabinet and the way of setting the detector, flooding fire extinguishing can be realized, thereby achieving a quick response to the fire and quick fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the electric heating start valve of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a fire extinguishing device selection valve of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the charging and swapping cabinet of the utility model;

[0018] Figure 4 This is one of the structural schematic diagrams of the active and passive joint type automatic fire extinguishing charging and swapping cabinet of the utility model;

[0019] Figure 5 This is the second structural schematic diagram of the active and passive joint type automatic fire extinguishing charging and swapping cabinet of the utility model.

[0020] Legend: 1. Electric thermal start valve; 11. Valve body; 111. Through hole; 112. Exhaust channel; 113. Passage; 12. Valve core; 121. Flange; 122. Receiving groove; 123. Ring groove; 124. Sealing ring; 13. Hot start device; 131. Fixing bracket; 132. Temperature-sensitive glass ball; 133. Placement seat; 134. Limiting sliding hole; 135. Heating wire; 14. Communication signal feedback device; 2. Fire extinguishing device; 21. Fire extinguishing agent bottle group; 22. Main control valve; 23. Fire extinguishing agent delivery pipeline; 24. Driving device; 25. Leakage signal feedback device; 26. Controller; 3. Charging and swapping cabinet; 31. Partition plate; 32. Spray channel; 33. Storage space; 4. Nozzle; 5. Composite detector; 6. Temperature detector. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments, but is not limited to the contents of the specification.

[0022] like Figure 1 and Figure 2As shown, the utility model relates to a selection valve, which is composed of a plurality of electric thermal start valves 1 connected in series. The electric thermal start valve 1 comprises a valve body 11, a valve core 12 and a heat start device 13. The valve body 11 is provided with a through hole 111 penetrating the top and bottom, and the valve body 11 is provided with a discharge channel 112 which can be communicated with the through hole 111 on two opposite sides. The valve core 12 is a columnar structure matching the shape of the through hole 111, one end of which extends into the through hole 111 and forms a blockage at the communication port between the discharge channel 112 and the through hole 111, and the other end is exposed from the through hole 111 and a receiving groove 122 is provided on the end surface of the exposed end. The heat start device 13 comprises a fixing frame 131 and a temperature sensing glass The glass ball 132 and the fixing frame 131 are fixedly connected to the valve body 11, and a placement seat 133 capable of resisting the temperature-sensitive glass ball 132 is provided on the top, and a limiting sliding hole 134 with one end opening facing the placement seat 133 and the other end opening facing the through hole 111 is also provided. The exposed end of the valve core 12 slides with the limiting sliding hole 134, and the receiving groove 122 at the end faces the placement seat 133. The temperature-sensitive glass ball 132 is capsule-shaped, and the two ends are respectively abutted against the receiving groove 122 and the placement seat 133. The axis of the temperature-sensitive glass ball 132 is not coaxial with the axis of the valve core 12, and a supporting and blocking mechanism with an inclination angle is formed between the receiving groove 122 and the placement seat 133. The through hole 111 and the discharge channel 112 are arranged on the valve body 11. One end of the through hole 111 is connected to the fire extinguishing device for passing the fire extinguishing agent, and the other end is plugged into the valve core 12 to block the passage so that the fire extinguishing agent flows into the discharge channel 112, that is, the through hole 111 and the discharge channel 112 form a "cross" shaped fluid channel. The valve core 12 blocks the discharge channel 112 or allows the discharge channel 112 to communicate with the through hole 111 by adjusting the depth in the through hole 111 or the length of the valve core 12 inserted into the through hole 111. The hot start device 13 is fixed to the side of the valve body 11 where the valve core 12 is installed, wherein the fixing frame 131 is fixedly installed with the valve body as an abutting bracket, and there is a space on the fixing frame 131 for the valve core 12 to move and retract. At the top of this space, That is, the position where the exposed end of the valve core 12 can be supported is provided with a placement seat 133. When the receiving groove 122 at the end of the valve core 12 and the placement seat 133 are supported against each other, the distance of the valve core 12 inserted into the through hole 111 is the shortest. At this time, the valve core is in a state where the discharge channel 112 is completely unblocked, and the fire extinguishing agent can flow freely and be discharged for fire extinguishing. A capsule-shaped glass ball is provided between the receiving groove 122 and the placement seat 133, and the position of the placement seat 133 remains unchanged. In order to accommodate the glass ball, the distance of the valve core 12 in the through hole 111 will increase. The length of the temperature-sensitive glass ball 132 needs to be able to support the valve core 12, and the valve core 12 part in the through hole 111 will block the discharge channel 112, thereby achieving the purpose of closing the fluid passage.

[0023] During use, after the temperature-sensitive glass ball 132 is broken, a problem will arise that is, the pressure in the fire extinguishing agent pipeline is relatively high, and it will quickly move toward the placement seat 133 at the moment the glass ball is broken, but the large pieces of the broken temperature-sensitive glass ball 132 have not completely left the position between the receiving groove 122 and the placement seat 133, which will cause the end of the valve core 12 to press against the glass ball fragments, and the valve core 12 cannot reach the maximum stroke, which in turn causes the discharge channel 122 to not be completely opened by the valve core, resulting in a blocked fire extinguishing agent passage that affects the fire extinguishing efficiency. In order to solve this problem, the temperature-sensitive glass ball installed on the hot start valve of the utility model is not in a vertical state , but with the connection line between the receiving groove 122 and the placement seat 133 at an angle, that is, it is tilted. When starting, after the tilted temperature-sensitive glass ball 132 is broken, under the push of the valve core 12, the fragments of the glass ball will fly out obliquely. Even after being pressed by the valve core 12, the smooth and tilted surface of the glass ball fragments is easy to fly out from the abutment position. Through this tilted temperature-sensitive glass ball structure, the problem that the valve core 12 does not fully open the discharge channel 112 can be effectively reduced, ensuring the smooth and efficient implementation of the fire extinguishing setting; specifically, the angle between the axis of the temperature-sensitive glass ball 132 and the axis of the valve core 12 is 2°-5°. In addition, because of the arc structure of the end of the capsule-shaped temperature-sensitive glass ball, in order to ensure that the contact position of the receiving groove 122 and the placement seat 133 does not collide and can remain stable, both are set to a concave receiving shape, and the edge position of the concave is set to a chamfer, which can ensure that the glass ball can be stably resisted even when it is tilted and will not cause collisions to the glass ball to cause accidental touches.

[0024] The selector valves of the utility model are arranged in series. When used as the selector valves in series, the valve body 11 can be an integrated structure, that is, a plurality of through holes 111 and a corresponding number of installation positions of the hot start device 13 are arranged on the valve body. A passage 113 can also be arranged on the valve body 11, which is respectively connected to each through hole 111. A specific start valve can be opened as needed to ensure smooth flow of the fluid passage 113.

[0025] Specifically, in order to make the temperature-sensitive glass ball 132 break quickly during use, the hot start device 13 also includes a heating wire 135. The area on the fixed frame 131 corresponding to the abutment of the temperature-sensitive glass ball 132 is a hollow structure, forming an exposed area where the temperature-sensitive glass ball 132 is exposed to the external environment. The heating wire 135 is located in the exposed area and is arranged around the temperature-sensitive glass ball 132. The heating wire 135 is connected to a power source to form a heating source. After the circuit connected to the heating wire 135 is energized, the heating wire 135 heats up, causing the temperature-sensitive glass ball 132 to break, thereby opening the valve core 12. The hollow structure on the fixed frame 131 corresponding to the abutment area of ​​the temperature-sensitive glass ball 132 can provide the temperature-sensitive glass ball 132 with space to bounce off, and as little as possible remains in the abutment space position, which can further reduce the problem of the valve core 12 not being able to open in place. In addition, for the selector valves arranged in parallel, the direction of the hollow setting needs to be perpendicular to or at an angle to the arrangement direction of the thermal pneumatic valves, so as to ensure that the fragments of the temperature-sensitive glass ball will not affect the adjacent glass balls.

[0026] The valve core 12 is provided with a flange 121 and an annular groove 123. The flange 121 is arranged along the circumference of the valve core 12 at the junction of the part extending into the through hole 111 and the exposed end to form a clamping ring that can be clamped at the mouth position. The annular grooves 123 are arranged in pairs along the circumference of the valve core 12 and are respectively located on both sides of the mouth of the discharge channel 112. A sealing ring 124 that can fit tightly against the inner wall of the through hole 111 is sleeved in the annular groove 123. The flange 121 is provided so that the length of the valve core 12 extending into the through hole 111 can be limited. When the temperature-sensitive glass ball 132 is installed, the receiving groove 122 at the top of the valve core 12 can be used as a fixed base whose position will not float up and down. A placement seat 133 that can be loosened or tightened can be provided at the top of the fixing frame 131. Specifically, a screw structure can be provided, and a placement seat 133 is provided at the end of the screw. By twisting the screw, the distance between the placement seat 133 and the receiving groove 122 can be changed, and the temperature-sensitive glass ball 132 can be clamped. The sealing ring 124 can form a seal at the edge of the discharge channel 122 to prevent the fire extinguishing agent from leaking along the valve core.

[0027] The relatively arranged discharge channels 112 are respectively connected to the signal feedback device 14 and the nozzle for spraying the fire extinguishing agent. By installing the signal feedback device 14 on the discharge channel 112, a signal of which pneumatic valve is working can be obtained when the coupling selection valve is working. The start signal feedback device 27 is a self-locking diaphragm pressure structure and is provided with a reset button. The start signal can be and can only be reset manually after the self-locking action. This not only ensures the safe transmission of the start signal during a fire, but also can be manually released after the fire is successfully extinguished. The end of the through hole 111 toward the bottom is connected to the pipeline for supplying the fire extinguishing agent, and the end toward the top is connected to the valve core 12.

[0028] like Figure 3 , Figure 4 and Figure 5As shown, an active-passive parallel-type automatic fire extinguishing charging and swapping cabinet using the above-mentioned selection valve includes a fire extinguishing device 2 and a charging and swapping cabinet 3. There are multiple charging and swapping cabinets 3, and multiple charging and swapping cabinets 3 are adjacently arranged in parallel to form a charging and swapping cabinet group. The top of each charging and swapping cabinet 3 is provided with a nozzle 4 with a nozzle facing the bottom. The fire extinguishing device 2 and the selection valve are installed on the top of the charging and swapping cabinet group. The number of the electric thermal start valves 1 that constitute the selection valve is the same as the number of the charging and swapping cabinets 3. The fire extinguishing device 2 is connected to the through hole 111, and the nozzles 4 are each connected to the discharge channel 112 on the single electric thermal start valve 1 to form a fire extinguishing agent circulation channel. The fire extinguishing device 2 is used to provide fire extinguishing agent, and spray it into the charging and swapping cabinet 3 through the nozzle 4 to control the fire and extinguish the fire. A selection valve is set on the passage between the fire extinguishing device 2 and the nozzle 4. Specifically, multiple pipe joints can be used to connect one by one with the through hole 111, or an integrated row valve body can be used to connect the passage 113 above. The number of valve heads on the selection valve is the same as the number of charging and swapping cabinets. Depending on which charging and swapping cabinet is on fire, a specific selection valve can be selected to open the pipeline to connect and extinguish the fire. Because the ignition objects in the charging and swapping cabinet are batteries, lithium batteries, etc., which catch fire quickly and spread rapidly, the selection valve used must not have the problem of blocked passage of fire extinguishing agent, so as to achieve rapid response and rapid fire extinguishing. The selection valve of the utility model patent can effectively solve the problem of blocked passage; the "active and passive" mentioned in this application actually refers to the distinction between cabinets, combined with Figure 4 and Figure 5 Generally speaking, the cabinet with fire extinguishing device in the middle is the active cabinet, and the charging and swapping cabinet with only pipelines and sprinklers connected on both sides is the passive cabinet.

[0029] The charging and swapping cabinet 3 is provided with a partition plate 31 that divides the internal space into multiple sub-spaces. The sub-spaces include a spray channel 32 and storage spaces 33 that are arranged on both sides of the spray channel 32 and close to its side walls. The partition plate 31 is provided with a number of evenly arranged holes to form a vent plate through which the gas in the spray channel 32 and the storage space 33 can flow. The storage space 33 is used to place batteries for charging. The spray channel 32 can quickly diffuse the fire extinguishing agent sprayed from the top into the storage spaces 33 on both sides. The partition plate 31 with a perforated plate structure can further increase the diffusion speed, so that the fire extinguishing agent can quickly flood the interior of the cabinet after being sprayed to extinguish the fire.

[0030] The spray channel 32 and the storage space 33 are both provided with independent cabinet doors, the spray head 4 is provided at the top of the spray channel 32 space, and a composite detector 5 is provided at an adjacent position, and a temperature detector 6 is provided at the top of each storage space 33, and the composite detector 5 and the temperature detector 6 are both connected to the fire extinguishing device 2. The composite detector 5 is a detector with multiple probes, which can detect different types of combustible gases and smoke, such as carbon monoxide, hydrogen, VOC, smoke, etc., and can timely detect and upload various fire hazard sources in the charging and swapping cabin. The temperature detector 6 is used to detect the temperature in each storage space 33 to monitor whether there is a fire. Because the orifice plate structure is used, if a fire occurs, it is easy to cause the fire to affect the battery in the adjacent storage space. The temperature monitoring is set in each storage space 33 to achieve rapid response and rapid fire extinguishing, complete the fire extinguishing work and prevent the occurrence of interlocking fires.

[0031] The fire extinguishing device 2 comprises a fire extinguishing agent bottle group 21, a master control valve 22, a fire extinguishing agent delivery pipeline 23, a driving device 24, a leakage signal feedback device 25 and a controller 26. The driving device 24 and the leakage signal feedback device 25 are sealed and installed at the bottle mouth of the fire extinguishing agent bottle group 21. The fire extinguishing agent delivery pipeline 23 is connected with the fire extinguishing agent bottle group 21 and the selection valve respectively, and the master control valve 22 is arranged on the passage of the fire extinguishing agent delivery pipeline 23. The controller 26 is respectively connected with the composite detector 5, the temperature detector 6, the master control valve 22, the driving device 24, the leakage signal feedback device 25 and the selection valve through line electrical connection or signal connection to form a feedback control circuit. The fire extinguishing agent contained in the fire extinguishing agent bottle group 21 is a gas fire extinguishing agent. During operation, after receiving the fire signal from the detector 4, the controller 26 sends a working signal to the driving device 24 to start it. After receiving the starting signal, the driving device 24 will start to open the fire extinguishing agent bottle group 21, so that the fire extinguishing agent can be sprayed out from the bottle group. The fire extinguishing agent is sent to the nozzle 24 along the fire extinguishing agent delivery pipeline 23. Under the action of pressure, the fire extinguishing agent is sprayed from the nozzle into the charging and swapping cabinet and quickly floods each storage space 33 to complete the fire extinguishing work. The main control valve 22 adopts a normally closed pilot solenoid valve, which is powered on to open and powered off to close. It is connected to the controller 25 signal, and its power-on time is controlled by the start / shutdown signal sent by the controller 25, so as to achieve the purpose of controlling the fire extinguishing spraying dosage, and then realize the fire extinguishing agent component spraying into the charging and swapping cabinet in batches. The amount of fire extinguishing agent sprayed each time is controlled to achieve the purpose of rapid fire extinguishing, continuous temperature reduction, fire suppression and prevention of re-ignition. Specifically, the leakage signal feedback device 25 is a diaphragm pressure structure with reliable sealing. The pressure structure can reflect the pressure in the fire extinguishing agent bottle group. After the leakage pressure is reduced, it can quickly respond and send a signal to the controller 26, so as to achieve the effect of real-time display of whether the fire extinguishing agent bottle group is leaking; the fire extinguishing agent delivery pipeline 23 is a flexible and bendable pipe, and each interface connection is a quick-insert or quick-twist joint. The fire extinguishing agent delivery pipeline 23 can adapt to various installation environments and installation conditions. The shape of the pipe is not restricted, which is convenient for installation and layout. The interface connection adopts a quick-insert or quick-twist joint, which can reduce the difficulty of installation and maintenance. It is simple, firm and not easy to fall off.

[0032] The type of gas fire extinguishing agent used is perfluorohexanone fire extinguishing agent. Perfluorohexanone fire extinguishing agent mainly relies on heat absorption cooling to extinguish fire and reduce temperature. It has the characteristics of fast fire extinguishing speed, good cooling effect, good insulation performance, and it is an environmentally friendly fire extinguishing agent.

[0033] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the embodiments here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A selector valve, characterized in that: It is composed of a plurality of electrically-heated start valves (1) connected in series. The electrically-heated start valve (1) comprises a valve body (11), a valve core (12) and a heat start device (13). The valve body (11) is provided with a through hole (111) penetrating the top and bottom, and two opposite sides of the valve body (11) are provided with a discharge channel (112) capable of communicating with the through hole (111). The valve core (12) is a columnar structure matching the shape of the through hole (111), one end of which extends into the through hole (111) and forms a blockage at the communication port between the discharge channel (112) and the through hole (111), and the other end is exposed from the through hole (111) and a receiving groove (122) is provided on the end surface of the exposed end. The heat start device (13) comprises a fixing frame (131) and a temperature-sensitive glass ball (132). The fixing frame (131) is fixedly connected to the valve body (11), and a placement seat (133) capable of supporting the temperature-sensitive glass ball (132) is provided on the top thereof, and a limiting sliding hole (134) is provided with an opening at one end facing the placement seat (133) and an opening at the other end facing the through hole (111). The exposed end of the valve core (12) is slidably matched with the limiting sliding hole (134), and the receiving groove (122) at the end faces the placement seat (133). The temperature-sensitive glass ball (132) is capsule-shaped, and the two ends are respectively in contact with the receiving groove (122) and the placement seat (133). The axis of the temperature-sensitive glass ball (132) is not coaxial with the axis of the valve core (12), and a supporting and blocking mechanism with an inclination angle is formed between the receiving groove (122) and the placement seat (133).

2. A selector valve according to claim 1, characterized in that: The valve core (12) is provided with a flange (121) and an annular groove (123); the flange (121) is arranged along the circumference of the valve core (12) at the junction of the portion extending into the through hole (111) and the exposed end to form a clamping ring that can be clamped at the mouth position; the annular grooves (123) are arranged in pairs along the circumference of the valve core (12) and are respectively located on both sides of the mouth of the discharge channel (112); a sealing ring (124) that can be tightly attached to the inner wall of the through hole (111) is sleeved in the annular groove (123).

3. A selector valve according to claim 1, characterized in that: The hot start device (13) further comprises a heating wire (135); the area on the fixing frame (131) corresponding to the abutment area of ​​the temperature-sensitive glass ball (132) is a hollow structure, forming an exposed area where the temperature-sensitive glass ball (132) is exposed to the external environment; the heating wire (135) is located in the exposed area and is arranged around the temperature-sensitive glass ball (132); the heating wire (135) is connected to a power source to form a heating source.

4. A selector valve according to claim 1, characterized in that: The oppositely arranged discharge channels (112) are respectively connected to the signal feedback device (14) and the nozzle capable of spraying the fire extinguishing agent; the through hole (111) is connected to a pipeline for supplying the fire extinguishing agent at one end facing the bottom, and is connected to the valve core (12) at one end facing the top.

5. A selector valve according to claim 1, characterized in that: The angle between the axis of the temperature-sensitive glass ball (132) and the axis of the valve core (12) is 2°-5°.

6. An active-passive parallel-type automatic fire extinguishing charging and swapping cabinet using any one of the selection valves described in claims 1-5, comprising a fire extinguishing device (2) and a charging and swapping cabinet (3), wherein the number of the charging and swapping cabinets (3) is multiple, and the multiple charging and swapping cabinets (3) are arranged adjacent to each other in parallel to form a charging and swapping cabinet group, and each charging and swapping cabinet (3) has a nozzle (4) with a nozzle facing the bottom at the top of the cabinet body thereof, the fire extinguishing device (2) and the selection valve are installed at the top of the charging and swapping cabinet group, and the number of the electrically-heated starting valves (1) constituting the selection valve is the same as the number of the charging and swapping cabinets (3), the fire extinguishing device (2) is connected to the through hole (111), and the nozzles (4) are each connected to the discharge channel (112) on a single electrically-heated starting valve (1) to form a fire extinguishing agent circulation channel.

7. The active and passive joint type automatic fire extinguishing charging and swapping cabinet according to claim 6 is characterized in that: The charging and swapping cabinet (3) is provided with a partition plate (31) in the cabinet body for dividing the internal space into a plurality of sub-spaces, wherein the sub-spaces include a spray channel (32) and storage spaces (33) arranged on both sides of the spray channel (32) and closely attached to the side walls thereof, and the partition plate (31) is provided with a plurality of evenly arranged holes, forming a vent plate through which gas can flow between the spray channel (32) and the storage space (33).

8. The active and passive parallel type automatic fire extinguishing charging and swapping cabinet according to claim 7 is characterized in that: The spray channel (32) and the storage space (33) are both provided with independent cabinet doors, the spray head (4) is arranged at the top of the spray channel (32) space, and a composite detector (5) is arranged at an adjacent position, and a temperature detector (6) is arranged at the top of each storage space (33), and the composite detector (5) and the temperature detector (6) are both connected to the fire extinguishing device (2).

9. The active and passive parallel type automatic fire extinguishing charging and swapping cabinet according to claim 8 is characterized in that: The fire extinguishing device (2) comprises a fire extinguishing agent bottle group (21), a master control valve (22), a fire extinguishing agent delivery pipeline (23), a driving device (24), a leakage signal feedback device (25) and a controller (26); the driving device (24) and the leakage signal feedback device (25) are sealed and installed at the bottle mouth of the fire extinguishing agent bottle group (21); the fire extinguishing agent delivery pipeline (23) is respectively connected to the fire extinguishing agent bottle group (21) and the selection valve, and the master control valve (22) is arranged on the passage of the fire extinguishing agent delivery pipeline (23); the controller (26) is respectively connected to the composite detector (5), the temperature detector (6), the master control valve (22), the driving device (24), the leakage signal feedback device (25) and the selection valve through lines or signals to form a feedback control circuit.

10. The active and passive parallel type automatic fire extinguishing charging and swapping cabinet according to claim 9 is characterized in that: The fire extinguishing agent contained in the fire extinguishing agent bottle group (21) is a gas fire extinguishing agent.

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