An electronically controlled fire extinguishing device with a temperature-sensitive self-starting ultra-fine dry powder fire detection tube

Abstract

The present invention discloses an electric controlled fire extinguishing device with a temperature-sensitive self-starting ultra-fine dry powder fire detection tube, comprising a container, wherein the container is filled with ultra-fine dry powder fire extinguishing agent and high-pressure nitrogen as a driving force, a lifting ring is provided on the top for easy fixation, and a container valve is provided at the bottom. The container valve is provided with a leak detection device, a release pipeline and a manual gate valve in sequence. The other end of the manual gate valve is provided with a fire detection tube, and the fire extinguishing agent is sprayed out after the release pipeline and the fire detection tube are high-pressure broken. The manual gate valve is mainly used to manually control the connection and closing between the fire detection tube and the container. Through a special fire detector, the spraying of the fire extinguishing agent is quickly linked and started, thereby improving the response speed of the fire extinguishing device; a temperature-sensitive fire detection tube is arranged for the area on site that is prone to fire hazards, and the fire extinguishing device is started by automatically sensing the local temperature, without the participation of additional control equipment, thereby improving the emergency start-up capability of the device; rapid point-to-point spraying fire extinguishing is achieved, and at the same time, multiple nozzles in the pipeline participate in releasing the fire extinguishing agent to achieve protection of a larger area.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguishing, and in particular to an electric-controlled fire extinguishing device with a temperature-sensitive self-starting ultra-fine dry powder fire detection tube. Background Art

[0002] In recent years, as electric bicycles have become an indispensable means of transportation in people's daily lives, they have been growing at a rate of nearly 30 million vehicles per year. As of now, the number of electric bicycles in China is close to 300 million. However, with the large-scale use of electric bicycles, the fire hazards of the lithium batteries they carry are becoming increasingly prominent. Since lithium batteries are energy-containing substances, especially when they are overheated, short-circuited, squeezed, etc., they will generate a lot of heat, triggering a chain reaction of internal electrode materials and electrolytes, and then thermal runaway will occur and develop into large-scale fires and explosions.

[0003] In the actual use of electric bicycles, most fires occur during the charging process, and the scene of this link is basically an unmanned area, and there is no good automatic fire-fighting measure on site. Once a lithium battery fire occurs, portable fire extinguishers are used as a fire-fighting means. However, electric bicycle fires, especially fires in internal lithium batteries, will produce a large amount of toxic and harmful gases. Moreover, when the fire is discovered manually, the fire often reaches a certain intensity, and the portable fire extinguishers on site are no longer effective, and the fire cannot be controlled in the first time.

[0004] Therefore, a fire extinguishing material and equipment that is faster, more efficient, safer and more reliable is urgently needed in the fire fighting field. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an electronically controlled fire extinguishing device with a temperature-sensitive self-starting ultra-fine dry powder fire detection tube, which effectively improves the safety and efficiency of the fire extinguishing device during use.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an electric controlled fire extinguishing device with a temperature-sensitive self-starting ultra-fine dry powder fire detection tube, comprising a container, the container is filled with ultra-fine dry powder fire extinguishing agent and high-pressure nitrogen as a driving force, a lifting ring is provided on the top for easy fixation, and a container valve is provided at the bottom. The container valve is provided with a leak detection device, a release pipe and a manual gate valve in sequence. The other end of the manual gate valve is provided with a fire detection tube, and the fire extinguishing agent is sprayed out after the release pipe and the fire detection tube are high-pressure broken. The manual gate valve is mainly used to manually control the connection and closing between the fire detection tube and the container.

[0007] As an improvement, the fire detection tube is a flexible tube that can withstand high pressure and rupture when reaching a specified temperature. Its end is equipped with an electric control gate valve and a local nozzle connected to the electric control gate valve. The electric control gate valve is provided with a fire detector.

[0008] As an improvement, a large nozzle is provided at the end of the release pipe.

[0009] As an improvement, the fire extinguishing device container valve is provided with a valve cover on the top, one end of the valve cover is threadedly connected to the manual gate valve, and the other end is threadedly connected to the valve body, two sealing rings are respectively provided on the inner top wall and side wall of the valve cover to facilitate better sealing, an opening knife is provided on the valve cover, a second O-ring for radial sealing and a second O-ring for end face sealing are provided between the valve core and the valve body, a diaphragm is provided at one end of the valve core, and a hollow screw is provided at the other end.

[0010] As an improvement, a filling ball head is provided on the container valve, and a splicing cap is provided between the filling ball head and the valve body. The splicing cap tightens the distance between the filling ball head and the valve body to achieve sealing. Two radial O-rings are provided between the filling ball head and the valve body to improve the sealing reliability during filling. Filling can be achieved by loosening the splicing cap. An over-pressure safety device is provided on the opposite side of the filling ball head. The over-pressure safety device includes a sealing gasket, a sealing seat, an adjusting spring and an adjusting knob. The preload force of the adjusting spring is controlled by the adjusting knob, so that when the pressure in the bottle group is too high, the sealing surface is automatically pushed open to achieve pressure relief.

[0011] The technical solution adopted by the present invention has the following beneficial effects: the idea of ​​the present invention is to target the semi-open places specific to the charging link of electric bicycles, and combine the advantages of ultra-fine dry powder being suitable for full flooding fire extinguishing and local fire extinguishing, which have good fire extinguishing efficiency, to develop an electronically controlled ultra-fine dry powder fire-detecting tube fire extinguishing device with temperature sensing self-starting, to achieve: ① electronically controlled fire extinguishing device, through a special fire detector, quickly linked to start spraying fire extinguishing agent, to improve the response speed of the fire extinguishing device; ② temperature sensing self-starting fire extinguishing device, arrange temperature sensing fire-detecting tubes for areas prone to fire hazards on site, and start the fire extinguishing device through automatic sensing of local temperature, without the participation of additional control equipment, to improve the emergency start-up capability of the device; ③ local breaches and pipeline nozzles simultaneously spray fire extinguishing agent, to achieve rapid point-to-point spraying fire extinguishing, and at the same time, multiple pipeline nozzles participate in releasing fire extinguishing agent, to achieve protection over a larger area. At present, there is still a blank in the domestic automatic fire fighting technology for fires during charging of electric bicycles. The development of this device is crucial to the safety of electric bicycle applications and has far-reaching significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the device;

[0013] Figure 2 It is a cross-sectional view of the container valve structure;

[0014] Figure 3 It is a left side view of the container valve structure;

[0015] Figure 4 It is a schematic diagram of the container valve after being started;

[0016] Figure 5 Schematic diagram of the cutter head. DETAILED DESCRIPTION

[0017] like Figure 1-5 As shown, the container 2 of the fire extinguishing device is filled with ultra-fine dry powder fire extinguishing agent and high-pressure nitrogen as a driving force, a lifting ring 1 is provided on the top for easy fixation, and a container valve 3 is provided at the bottom. The container valve 3 is provided with a leak detection device 4, a release pipe 5 and a manual gate valve 6.

[0018] In this embodiment, a fire detection tube 7 is provided at the other end of the manual gate valve 6, which is mainly used to manually control the connection and closing between the fire detection tube 6 and the container 2;

[0019] In this embodiment, the fire detection tube 7 is a flexible tube that can withstand high pressure and rupture when reaching a specified temperature, and an electric control gate valve 9 and a local nozzle 10 connected to the electric control gate valve are installed at the end thereof;

[0020] In this embodiment, a large nozzle 8 is provided at the end of the release pipe 5 for quickly releasing the fire extinguishing agent;

[0021] In this embodiment, the fire extinguishing device container valve 3 is provided with a valve cover 301 on the top, one end of the valve cover 301 is threadedly connected to the manual gate valve 6, and the other end is threadedly connected to the valve body 303, two sealing rings 310 are respectively provided on the inner top wall and side wall of the valve cover to facilitate better sealing, an opening knife 302 is provided on the valve cover 301, a second O-ring 305 for radial sealing and a second O-ring 307 for end face sealing are provided between the valve core 304 and the valve body 303, a diaphragm 314 is provided at one end of the valve core 304, and a hollow screw 306 is provided at the other end.

[0022] Specifically, after the fire extinguishing device is arranged, the manual gate valve 6 is slowly opened to connect the channel E with the channel F. The pressure in the container valve cavity D flows to the inside of the fire detection tube 7 through the channels E and F and reaches a balanced state.

[0023] Startup method 1: When the fire detector first detects a fire, it sends a start command to the electronically controlled gate valve 9, so that the gas in the cavity D and the fire detection tube 7 is quickly released through the local nozzle 10, thereby breaking the balance of the container valve 3. The valve core 304 opens quickly under the pressure of the cavity A, and the cavity A is connected to the cavity C. At the same time, when the valve core 304 is quickly opened, the opening knife 302 will pierce the diaphragm 314, so that the cavity A is directly connected with the channel B and the channel E. A part of the fire extinguishing agent in the cavity A is directly sprayed from the cavity C through the release pipe 5 and the large nozzle 8 into the space, and the other part of the fire extinguishing agent is sprayed into the space through the channel B, the channel E, the channel F, the fire detection tube 7, and the local nozzle 10, thereby realizing the electronically controlled rapid start of the fire extinguishing device.

[0024] Start-up method two: If the fire detection tube 7 first detects that the temperature of the nearby area exceeds the set temperature, a rupture P will appear in the fire detection tube 7, and the gas in the cavity D and the fire detection tube 7 will quickly release pressure through the rupture P, thereby breaking the balance of the container valve 3 and opening the valve core 304. A part of the fire extinguishing agent in the cavity A is sprayed from the cavity C through the release pipe 5 and the large nozzle 8 into the space, thereby realizing a large range of protection. The other part of the fire extinguishing agent is sprayed through the channel B, channel E, channel F, and the fire detection tube 7 to the rupture P and is quickly sprayed to the vicinity of the high temperature, thereby realizing rapid point-to-point local fire extinguishing and improving the fire extinguishing efficiency.

[0025] In this embodiment, the fire extinguishing device container valve 3 is provided with a valve core 304 inside, a valve cover 301 is provided on the top, one end is threadedly connected to the manual gate valve 6, and the other end is threadedly connected to the valve body 303, and two sealing rings 310 are provided for better sealing. An opening knife 302 is provided on the valve cover 301, and a radially sealed O-ring 305 and a second end-face sealed O-ring 307 are provided between the valve core 304 and the valve body 303. A diaphragm 314, a pre-tightening block 311, a spring 312, and a pressure block 313 are provided at one end of the valve core 304. By adjusting the position between the pre-tightening block 311 and the valve core 304 and adjusting the pre-tightening force of the spring 312, a certain pressure difference is formed between the cavity A and the cavity D. When the gas in the cavity D leaks slowly When the gas in cavity A is slowly replenished into cavity D through channel B, when the gas in cavity D is rapidly depressurized, diaphragm 314 can effectively slow down the speed of replenishing gas from cavity A to cavity D, so as to facilitate opening the valve core by differential pressure. A pressing block 313 is provided between diaphragm 314 and spring 312 to prevent the spring 312 from rotating and scratching diaphragm 314 when pre-tightening block 311 rotates to adjust the pre-tightening distance of spring 312. A hollow screw 306 is provided at the other end of the valve core, and hollow screw 306 is provided with an inner hexagon structure for easy installation. By tightening hollow screw 306, second O-ring 307 is squeezed, so as to facilitate fixing of second O-ring 307 and squeeze out more deformed surface of O-ring to contact with valve body 303, so as to improve sealing effect.

[0026] In this embodiment, a filling ball head 317 is provided on the container valve 3, and a splicing cap 315 is provided between the filling ball head 317 and the valve body 303. The splicing cap 315 tightens the distance between the filling ball head 317 and the valve body 303 to achieve sealing. Two radial O-rings 316 are provided between the filling ball head 317 and the valve body 303 to improve the sealing reliability during filling. Filling can be achieved by loosening the splicing cap 315. An overpressure safety device is provided on the opposite side of the filling ball head. The overpressure safety device includes a sealing gasket 318, a sealing seat 319, an adjusting spring 320, and an adjusting knob 321. The preload force of the adjusting spring 320 is controlled by the adjusting knob 321, so that when the pressure in the bottle group is too high, the sealing surface 319 is automatically pushed open to achieve pressure relief.

[0027] In this embodiment, a valve core 308 is provided on the side of the container valve, and when the leak detection device 4 is installed, the pressure of the device can be observed by directly pushing open the valve core. The leak detection device 4 is a pressure component with a signal output function, which can transmit the pressure data in the bottle group to the control center in real time;

[0028] In this embodiment, the opening knife 302 is a rigid material with a hollow center, and the top is ground into a bevel at a certain angle to facilitate puncturing the diaphragm 314. An opening is provided on the side to improve its elasticity and facilitate interference fit installation on the valve cover 301. At the same time, the opening on the side facilitates the gas in the cavity D to quickly enter the channel E, and at the same time, the diaphragm 314 will not be completely removed, thereby preventing the diaphragm from being blown into the pipeline and causing blockage.

[0029] In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not depart from the spirit of the present invention, they should all fall within the scope defined by the claims attached to the present invention.

Claims

1. An electronically controlled fire extinguishing device with a temperature-sensitive self-starting ultra-fine dry powder fire detection tube, characterized in that: The invention comprises a container (2), wherein the container is filled with ultrafine dry powder fire extinguishing agent and high-pressure nitrogen as a driving force, a lifting ring (1) is provided on the top for easy fixing, and a container valve (3) is provided on the bottom. The container valve (3) is provided with a leak detection device (4), a release pipe (5) and a manual gate valve (6) in sequence. The other end of the manual gate valve (6) is provided with a fire detection pipe (7). After the high pressure of the release pipe and the fire detection pipe is broken, the fire extinguishing agent is sprayed out. The fire extinguishing device container valve (3) is provided with a valve core (304) inside and a valve cover (301) is provided on the top. One end of the valve cover (301) is threadedly connected to the manual gate valve (6), and the other end is threadedly connected to the valve body (303). Two sealing rings (310) are provided on the inner top wall and side wall of the valve cover respectively. The valve cover (301) ) is provided with an opening knife (302), a second O-ring (305) for radial sealing and a second O-ring (307) for end face sealing are provided between the valve core (304) and the valve body (303), a diaphragm (314), a pre-tightening block (311), a spring (312), and a pressure block (313) are provided at one end of the valve core (304), and a certain pressure difference is formed between the cavity A and the cavity D by adjusting the position between the pre-tightening block (311) and the valve core (304), a pressure block (313) is provided between the diaphragm (314) and the spring (312), and a hollow screw (306) is provided at the other end of the valve core (304), and the opening knife (302) is a hollow steel material with a hollow center and a side The fire detection tube (7) is provided with an electric gate valve (9) and a local nozzle (10) connected to the electric gate valve at its end, and a large nozzle (8) is provided at the end of the release pipe (5). When the fire detector detects a fire first, a start command is issued to the electric gate valve (9), so that the gas in the cavity D and the fire detection tube (7) is quickly released through the local nozzle (10), thereby breaking the balance of the container valve (3). The valve core (304) is quickly opened under the pressure of the cavity A, and the cavity A is connected to the cavity C. At the same time, when the valve core (304) is quickly opened, the opening knife (302) will pierce the diaphragm (314), thereby realizing direct communication between the cavity A and the channels B and E, and a part of the fire extinguishing agent in the cavity A is directly discharged. Then, the fire extinguishing agent is sprayed from cavity C through the release pipe (5) and the large nozzle (8) into the space, and the other part of the fire extinguishing agent is sprayed into the space through the channel B, the channel E, the channel F, the fire detection tube (7), and the local nozzle (10). When the fire detection tube (7) first detects that the temperature of the nearby area exceeds the set temperature, a rupture P will appear in the fire detection tube (7), and the gas in cavity D and the fire detection tube (7) will be quickly depressurized through the rupture P, thereby breaking the balance of the container valve (3) and opening the valve core (304). A part of the fire extinguishing agent in cavity A is sprayed from cavity C through the release pipe (5) and the large nozzle (8) into the space, thereby realizing a wide range of protection. The other part of the fire extinguishing agent is sprayed into the space through the channel B, the channel E, the channel F, the fire detection tube (7), and the rupture P to the vicinity of the high temperature.

2. The fire extinguishing device with an electronically controlled temperature-sensitive self-starting ultra-fine dry powder fire detection tube according to claim 1 is characterized in that: The fire detection tube (7) is a flexible tube that can withstand high pressure and will break when reaching a specified temperature.

3. The fire extinguishing device with an electronically controlled temperature-sensitive self-starting ultra-fine dry powder fire detection tube according to claim 1 is characterized in that: The container valve (3) is provided with a filling ball head (317), and a cap (315) is provided between the filling ball head (317) and the valve body (303). The cap (315) tightens the distance between the filling ball head (317) and the valve body (303) to achieve sealing. Two radial O-rings (316) are provided between the filling ball head (317) and the valve body (303) to improve the sealing reliability during filling. Filling can be achieved by loosening the cap (315). An overpressure safety device is provided on the opposite side of the filling ball head. The overpressure safety device includes a sealing pad (318), a sealing seat (319), an adjusting spring (320), and an adjusting knob (321). The pre-tightening force of the adjusting spring (320) is controlled by the adjusting knob (321), so that when the pressure in the bottle group is too high, the sealing surface (319) is automatically pushed open to achieve pressure relief.

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