Double-gas-group intelligent fire extinguishing device

Abstract

The utility model discloses a double-gas-group intelligent fire extinguishing device, and belongs to the technical field of fire fighting equipment. Comprising a liquid nitrogen storage tank, a liquid nitrogen outlet pipe, a first deflation valve, a liquid nitrogen gasification device, a second deflation valve, a nitrogen remote control valve group, a third deflation valve, a nitrogen manual control valve, a pipeline, an inductor, an application area, a high-pressure mixer, a carbon dioxide manual control valve, a fourth deflation valve, a carbon dioxide remote control valve group, a fifth deflation valve and a liquid carbon dioxide gasification device. And a sixth deflation valve, a liquid carbon dioxide outlet pipe and a liquid carbon dioxide storage tank. According to the double-gas-group intelligent fire extinguishing device, low-cost carbon dioxide and nitrogen are combined, the range of the carbon dioxide is further increased, the emergency reaction time is shortened, the raw material cost is low, and wide popularization and application are facilitated.

Description

Technical Field

[0001] The utility model relates to a fire extinguishing device, in particular to a dual-gas group intelligent fire extinguishing device, belonging to the technical field of fire fighting equipment. Background Art

[0002] Most of the existing fire extinguishing devices on the market rely on external fire detection systems (fire alarm systems) to detect fires. Then, the command center gives a start signal to activate the fire extinguishing device; this causes a certain delay in the fire extinguishing time.

[0003] Chinese invention patent application number 201310127371.1 discloses an intelligent fire extinguishing device and system, comprising: a housing; a power supply system for supplying electrical energy, located within the housing; a detection system for detecting fire signals and electrically connected to the power supply system, located within the housing; a fire extinguishing assembly for extinguishing fires, located within the housing, comprising a fire extinguisher and an initiator for activating the fire extinguisher; the initiator being connected to the fire extinguisher; and an intelligent control system, located within the housing, with the detection system and initiator both electrically connected to the intelligent control system, which is in turn electrically connected to the power supply system. The intelligent fire extinguishing system comprises a central control console, a video device, and an intelligent fire extinguishing device. The invention provides an intelligent fire extinguishing device and system that achieve the goal of self-determining fire extinguishing by the fire extinguisher independent of an external fire alarm system. However, the drawbacks of this intelligent fire extinguishing device and system are its complex structure and high cost, which hinder its widespread application. In particular, its conventional fire extinguishing assembly results in a relatively long emergency response time.

[0004] A Chinese invention patent with patent publication number CN104775843B discloses a liquid nitrogen fire prevention and extinguishing system and method. The liquid nitrogen fire prevention and extinguishing system includes a liquid nitrogen tank truck, which is sequentially connected to a pump, a vertical shaft and a liquid nitrogen delivery main pipe. The liquid nitrogen delivery main pipe is respectively connected to a liquid nitrogen direct injection pipe for injecting liquid nitrogen into a goaf and a liquid nitrogen gasification device for gasifying liquid nitrogen into nitrogen and then injecting it into the goaf. An exhaust pipe is provided in the goaf, the exhaust pipe is connected to a return air pipe, a first control valve is provided on the exhaust pipe, and a sensor for monitoring pressure is also provided in the goaf. The invention also discloses a liquid nitrogen fire prevention and extinguishing method. The beneficial effects of this invention are: by installing an exhaust pipe in the goaf, when the pressure in the goaf exceeds a predetermined value, the air in the goaf can be discharged, thereby reducing the pressure in the goaf, increasing the nitrogen injection rate, and preventing inert and harmful gases in the goaf from escaping into the work area through cracks in the upper corners of the goaf under the action of high pressure. The drawbacks of this liquid nitrogen fire extinguishing system are: first, it is specifically designed for coal mines and is not universally applicable; second, the fire extinguishing component is a liquid nitrogen gasification device, which has high raw material costs and a relatively long emergency response time.

[0005] Chinese utility model patent publication number CN2915168Y discloses a liquid nitrogen fire extinguishing device. Its technical solution is that the liquid nitrogen fire extinguishing tool can be a vehicle-mounted liquid nitrogen extended spray fire extinguisher, a liquid nitrogen fire extinguishing bomb, a liquid nitrogen fire extinguishing hanging tank, or a liquid nitrogen fire extinguishing throwing canister. This utility model boasts a rational design, simple structure, safety and reliability, environmentally friendly efficiency, and ease of manufacture. Furthermore, it offers the following advantages: 1. The liquid nitrogen fire extinguishing system requires abundant raw materials, resulting in low production costs; 2. It is environmentally friendly and stain-free after use; 3. Liquid nitrogen can be placed at the core of a fire, instantly cooling and cutting off oxygen, providing a powerful effect. It is particularly suitable for fires involving petroleum, liquefied gas, and chemicals, as well as fires where contamination, pollution, or moisture could cause greater damage; 4. Due to its unique characteristics, the liquid nitrogen fire extinguishing system offers a wide range of uses and applications. The defects of the liquid nitrogen fire extinguishing combination device are: first, its liquid nitrogen fire extinguishing tools are vehicle-mounted liquid nitrogen extended fire extinguishing jet fire extinguisher, liquid nitrogen fire extinguishing bomb, liquid nitrogen fire extinguishing hanging tank or liquid nitrogen fire extinguishing throwing tube; second, the vehicle-mounted liquid nitrogen extended fire extinguishing jet fire extinguisher is limited to liquid nitrogen gasification, and the raw material cost is high.

[0006] Therefore, providing a dual-gas group intelligent fire extinguishing device that combines low-cost carbon dioxide and nitrogen to further increase the range of carbon dioxide, shorten emergency response time, and has low raw material costs, which is conducive to widespread promotion and application, has become a technical problem that urgently needs to be solved in this technical field. Utility Model Content

[0007] The purpose of the utility model is to provide a dual-gas group intelligent fire extinguishing device, which combines low-cost carbon dioxide and nitrogen to further increase the range of carbon dioxide, shorten the emergency response time, and has low raw material costs, which is conducive to widespread promotion and application.

[0008] In order to achieve the above purpose, the technical solution provided by the present utility model is:

[0009] A dual-gas group intelligent fire extinguishing device, comprising a liquid nitrogen storage tank, a liquid nitrogen outlet pipe, a first air release valve, a liquid nitrogen gasification device, a second air release valve, a nitrogen remote control valve group, a third air release valve, a nitrogen manual control valve, pipelines, sensors, an applicable area, a high-pressure mixer, a carbon dioxide manual control valve, a fourth air release valve, a carbon dioxide remote control valve group, a fifth air release valve, a liquid carbon dioxide gasification device, a sixth air release valve, a liquid carbon dioxide outlet pipe, and a liquid carbon dioxide storage tank;

[0010] The liquid nitrogen storage tank is connected to the first air release valve through a liquid nitrogen outlet pipe, the first air release valve is connected to the inlet end of the liquid nitrogen gasification device through a pipeline, the outlet end of the liquid nitrogen gasification device is connected to one end of the second air release valve through a pipeline, the other end of the second air release valve is connected to one end of the nitrogen remote control valve group through a pipeline, the other end of the nitrogen remote control valve group is connected to one end of the third air release valve through a pipeline, the other end of the third air release valve is connected to one end of the nitrogen manual control valve through a pipeline, the other end of the nitrogen manual control valve is connected to the high-pressure mixer through a pipeline, and the high-pressure mixer is transported to each applicable area through a pipeline;

[0011] The liquid carbon dioxide storage tank is connected to one end of the sixth air release valve through a liquid carbon dioxide outlet pipe, the other end of the sixth air release valve is connected to the inlet end of the liquid carbon dioxide gasification device through a pipeline, the outlet end of the liquid carbon dioxide gasification device is connected to one end of the fifth air release valve through a pipeline, the other end of the fifth air release valve is connected to one end of the carbon dioxide remote control valve group through a pipeline, the other end of the carbon dioxide remote control valve group is connected to one end of the fourth air release valve through a pipeline, the other end of the fourth air release valve is connected to one end of the carbon dioxide manual control valve through a pipeline, the other end of the carbon dioxide manual control valve is connected to the high-pressure mixer through a pipeline, and the high-pressure mixer is transported to each applicable area through a pipeline.

[0012] Preferably, the specific structure of the high-pressure mixer is as follows: it includes a nitrogen inlet, a nozzle, a carbon dioxide gas inlet, an intake chamber, a mixing chamber, a diffusion chamber, and an air outlet; the nitrogen inlet is arranged at the front end of the nozzle, the nozzle is connected to the intake chamber, the carbon dioxide gas inlet is arranged at the side end of the intake chamber, the intake chamber is connected to the mixing chamber, the mixing chamber is connected to the diffusion chamber, and the air outlet is arranged at the end of the diffusion chamber.

[0013] Preferably, the cross-sectional shape of the nozzle is trapezoidal, with a larger inlet and a smaller outlet, the cross-sectional shape of the carbon dioxide gas inlet is rectangular, the cross-sectional shape of the suction chamber is trapezoidal, with a larger inlet and a smaller outlet, the cross-sectional shape of the mixing chamber is rectangular, and the cross-sectional shape of the diffusion chamber is trapezoidal, with a smaller inlet and a larger outlet.

[0014] Preferably, the liquid nitrogen storage tank adopts a double-wall structure, the inner liner is made of stainless steel, the outer liner is made of Q235B or Q355R, and the middle layer is filled with insulating material pearl sand; the volume can be 3-200 cubic meters.

[0015] Preferably, the second air release valve, the third air release valve, the fourth air release valve and the fifth air release valve all include a pressure sensor and a safety valve, and the pressure sensor is connected to the safety valve.

[0016] Preferably, the first air release valve and the sixth air release valve include a front-end ball valve, a safety valve, and a rear-end ball valve, and the front-end ball valve is connected to the rear-end ball valve through the safety valve.

[0017] Preferably, the liquid nitrogen gasification device adopts an air-temperature vaporizer with a structure of 304 inner sleeve plus aluminum alloy heat exchange fin tubes, which is set to match the liquid nitrogen evaporation capacity.

[0018] Preferably, the nitrogen remote control valve group is provided with a main line and a sub-line, the main line includes a front-end ball valve, an electric regulating control valve, and a rear-end ball valve, and the sub-line is a ball valve.

[0019] Preferably, the sensors include various monitoring devices such as smoke sensors, temperature sensors, flame detectors, infrared detectors, and video fire detectors.

[0020] Preferably, the liquid carbon dioxide storage tank adopts a double-wall structure, the inner liner is made of 16MnDR or stainless steel, the outer liner is made of Q235B or Q355R, the middle layer is filled with insulating material such as pearl sand, and the volume can be 3-200 cubic meters.

[0021] Preferably, the nitrogen remote control valve group and the carbon dioxide remote control valve group are interlocked with the sensing signals of the sensing area and transmitted to the control room.

[0022] Preferably, the applicable area includes a pipeline and a sensor, and the sensor is installed on the pipeline.

[0023] Preferably, the liquid nitrogen outlet pipe is an inverted U-shaped tube structure.

[0024] Preferably, the liquid carbon dioxide outlet pipe is an inverted U-shaped pipe structure.

[0025] Preferably, the other end of the nitrogen manual control valve is connected to the nitrogen inlet in the high-pressure mixer through a pipeline.

[0026] Preferably, the other end of the carbon dioxide manual control valve is connected to the carbon dioxide gas inlet in the high-pressure mixer through a pipeline.

[0027] Beneficial effects:

[0028] The dual-gas group intelligent fire extinguishing device of the utility model combines low-cost carbon dioxide with nitrogen to further increase the range of carbon dioxide, shorten the emergency response time, and has low raw material costs, which is conducive to wide promotion and application.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods, but these are not intended to limit the scope of protection of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the dual-gas group intelligent fire extinguishing device of Example 1 of the present utility model.

[0031] Figure 2 It is a structural schematic diagram of the high-pressure mixer in the dual-gas group intelligent fire extinguishing device of Example 1 of the present utility model.

[0032] Description of main reference numerals:

[0033] 1Liquid nitrogen storage tank 2Liquid nitrogen outlet pipe

[0034] 3. First air release valve 4. Liquid nitrogen gasification device

[0035] 5 Second air release valve 6 Nitrogen remote control valve group

[0036] 7 Third air release valve 8 Nitrogen manual control valve

[0037] 9 pipes 10 sensors

[0038] 11 Applicable area 12 High pressure mixer

[0039] 13 Carbon dioxide manual control valve 14 Fourth air release valve

[0040] 15 Carbon dioxide remote control valve group 16 Fifth air release valve

[0041] 17 Liquid carbon dioxide gasification device 18 Sixth air release valve

[0042] 19 Liquid carbon dioxide outlet pipe 20 Liquid carbon dioxide storage tank

[0043] 12-1 Nitrogen inlet 12-2 Nozzle

[0044] 12-3 Carbon dioxide gas inlet 12-4 Inhalation chamber

[0045] 12-5 Mixing chamber 12-6 Diffusion chamber

[0046] 12-7 air outlet DETAILED DESCRIPTION

[0047] Unless otherwise specified, in the embodiments of the present invention, the components used are conventional components available on the market in this technical field, the connections between the components are conventional connections, and the units mentioned are weight units.

[0048] Example 1

[0049] like Figure 1 As shown, it is a structural diagram of the dual-gas group intelligent fire extinguishing device of Example 1 of the present utility model; Figure 2 1 is a schematic diagram of the structure of the high-pressure mixer in the dual-gas group intelligent fire extinguishing device of Example 1 of the present utility model; wherein 1 is a liquid nitrogen storage tank, 2 is a liquid nitrogen liquid outlet pipe, 3 is a first air release valve, 4 is a liquid nitrogen gasification device, 5 is a second air release valve, 6 is a nitrogen remote control valve group, 7 is a third air release valve, 8 is a nitrogen manual control valve, 9 is a pipeline, 10 is a sensor, 11 is an applicable area, 12 is a high-pressure mixer, 13 is a carbon dioxide manual control valve, 14 is a fourth air release valve, 15 is a carbon dioxide remote control valve group, 16 is a fifth air release valve, 17 is a liquid carbon dioxide gasification device, 18 is a sixth air release valve, 19 is a liquid carbon dioxide liquid outlet pipe, and 20 is a liquid carbon dioxide storage tank;

[0050] The dual-gas group intelligent fire extinguishing device in Example 1 of the present invention includes a liquid nitrogen storage tank 1, a liquid nitrogen liquid outlet pipe 2, a first air release valve 3, a liquid nitrogen gasification device 4, a second air release valve 5, a nitrogen remote control valve group 6, a third air release valve 7, a nitrogen manual control valve 8, a pipeline 9, a sensor 10, an applicable area 11, a high-pressure mixer 12, a carbon dioxide manual control valve 13, a fourth air release valve 14, a carbon dioxide remote control valve group 15, a fifth air release valve 16, a liquid carbon dioxide gasification device 17, a sixth air release valve 18, a liquid carbon dioxide liquid outlet pipe 19, a liquid carbon dioxide storage tank 20, a nitrogen inlet 12-1, a nozzle 12-2, a carbon dioxide gas inlet 12-3, an inhalation chamber 12-4, a mixing chamber 12-5, a diffusion chamber 12-6, and an air outlet 12-7;

[0051] The liquid nitrogen storage tank 1 is connected to the first air release valve 3 through a liquid nitrogen liquid outlet pipe 2. The liquid nitrogen liquid outlet pipe 2 is an inverted U-shaped tube structure. The first air release valve 3 is connected to the inlet end of the liquid nitrogen gasification device 4 through a pipeline. The outlet end of the liquid nitrogen gasification device 4 is connected to one end of the second air release valve 5 through a pipeline. The other end of the second air release valve 5 is connected to one end of the nitrogen remote control valve group 6 through a pipeline. The other end of the nitrogen remote control valve group 6 is connected to one end of the third air release valve 7 through a pipeline. The other end of the third air release valve 7 is connected to one end of the nitrogen manual control valve 8 through a pipeline. The other end of the nitrogen manual control valve 8 is connected to the high-pressure mixer 12 (nitrogen inlet 12-1) through a pipeline. The high-pressure mixer 12 is transported to each applicable area 11 through a pipeline. The applicable area 11 includes a pipeline 9 and a sensor 10. The pipeline 9 is equipped with a sensor 10.

[0052] The liquid carbon dioxide storage tank 20 is connected to one end of the sixth air release valve 18 through a liquid carbon dioxide outlet pipe 19. The liquid carbon dioxide outlet pipe 19 is an inverted U-shaped pipe structure. The other end of the sixth air release valve 18 is connected to the inlet end of the liquid carbon dioxide gasification device 17 through a pipeline. The outlet end of the liquid carbon dioxide gasification device 17 is connected to one end of the fifth air release valve 16 through a pipeline. The other end of the fifth air release valve 16 is connected to one end of the carbon dioxide remote control valve group 15 through a pipeline. The other end of the carbon dioxide remote control valve group 15 is connected to one end of the fourth air release valve 14 through a pipeline. The other end of the fourth air release valve 14 is connected to one end of the carbon dioxide manual control valve 13 through a pipeline. The other end of the carbon dioxide manual control valve 13 is connected to the high-pressure mixer 12 (the carbon dioxide gas inlet 12-3 therein) through a pipeline. The high-pressure mixer 12 transports the gas to each applicable area 11 through a pipeline.

[0053] The specific structure of the high-pressure mixer 12 is as follows: it includes a nitrogen inlet 12-1, a nozzle 12-2, a carbon dioxide gas inlet 12-3, an intake chamber 12-4, a mixing chamber 12-5, a diffusion chamber 12-6, and an air outlet 12-7; the nitrogen inlet 12-1 is arranged at the front end of the nozzle 12-2, the nozzle 12-2 is connected to the intake chamber 12-4, the carbon dioxide gas inlet 12-3 is arranged at the side end of the intake chamber 12-4, the intake chamber 12-4 is connected to the mixing chamber 12-5, and the mixing chamber 12-6 is connected to the mixing chamber 12-7. The combining chamber 12-5 is connected to the diffusion chamber 12-6, and the gas outlet 12-7 is provided at the end of the diffusion chamber 12-6; the cross-sectional shape of the nozzle 12-2 is trapezoidal, with a larger inlet and a smaller outlet; the cross-sectional shape of the carbon dioxide gas inlet 12-3 is rectangular; the cross-sectional shape of the suction chamber 12-4 is trapezoidal, with a larger inlet and a smaller outlet; the cross-sectional shape of the mixing chamber 12-5 is rectangular; and the cross-sectional shape of the diffusion chamber 12-6 is trapezoidal, with a smaller inlet and a larger outlet.

[0054] The nozzle 12-2 adopts a conical structure and is made of stainless steel. The diameter of the small end of the nozzle is d1 = (0.3-0.5) D, where D is the nitrogen inlet diameter.

[0055] The carbon dioxide gas inlet 12-3 is a circular pipe made of stainless steel and can be sized from DN15 to DN100.

[0056] The suction chamber 12-4 is used to install the nozzle and side inlet, and is made of stainless steel and has a conical structure;

[0057] The mixing chamber 12-5 is a stainless steel round tube with a diameter d2 = (0.28-0.45) D and a length L = (0.03-0.05) D;

[0058] The diffusion chamber 12-6 is a stainless steel conical structure, the inlet diameter is the same as d2, and the outlet diameter d3 = (1.1-1.6)D;

[0059] The liquid nitrogen storage tank 1 adopts a double-wall structure, the inner liner is made of stainless steel, the outer liner is made of Q235B or Q355R, and the middle interlayer is filled with pearl sand as insulation material; the volume can be 3-200 cubic meters;

[0060] The liquid nitrogen outlet pipe 2 and the liquid carbon dioxide outlet pipe 19 are both inverted U-shaped pipe structures;

[0061] The size of the liquid nitrogen outlet pipe 2 is DN25-DN150, the material is stainless steel 304 or 316, and it adopts an inverted U-shaped structure;

[0062] The second air release valve 5, the third air release valve 7, the fourth air release valve 14, and the fifth air release valve 16 all include a pressure sensor and a safety valve, and the pressure sensor is connected to the safety valve;

[0063] The pressure sensor model can be PDS403 series or 110EV series;

[0064] The model of the safety valve can be A42Y-16C;

[0065] The first air release valve 3 and the sixth air release valve 18 include a front end ball valve, a safety valve, and a rear end ball valve. The front end ball valve is connected to the rear end ball valve through the safety valve.

[0066] The specifications of the front ball valve, safety valve and rear ball valve can be DN25-DN150;

[0067] The structure of the liquid nitrogen vaporization device 4 is an air-temperature vaporizer, which is a 304 inner casing plus an aluminum alloy heat exchange fin tube, and is set to match the liquid nitrogen evaporation capacity;

[0068] Nitrogen manual control valve 8 and carbon dioxide manual control valve 13 adopt ball valve DN25-DN150;

[0069] The nitrogen remote control valve group 6 is provided with a main line and a secondary line. The main line includes a front-end ball valve, an electric regulating control valve, and a rear-end ball valve, and the secondary line is a ball valve;

[0070] Pipe 9 is made of stainless steel and can be DN25-DN150;

[0071] The sensors 10 include various monitoring devices such as smoke sensors, temperature sensors, flame detectors, infrared detectors, and video fire detectors;

[0072] The carbon dioxide remote control valve group 15 is provided with a main line and a secondary line. The main line includes a front-end ball valve, an electric regulating control valve, and a rear-end ball valve, and the secondary line is a ball valve;

[0073] The structure of the liquid carbon dioxide gasification device 17 is an air-temperature vaporizer, which is a 304 inner casing and an aluminum alloy heat exchange fin tube, and is set to match the evaporation rate of the liquid carbon dioxide;

[0074] The size of the liquid carbon dioxide outlet pipe 19 is DN25-DN150, the material is made of stainless steel 304 or 316, and adopts an inverted U-shaped structure;

[0075] The liquid carbon dioxide storage tank 20 adopts a double-wall structure, the inner liner is made of 16MnDR or stainless steel, the outer liner is made of Q235B or Q355R, and the middle interlayer is filled with pearl sand as insulation material; the volume can be 3-200 cubic meters;

[0076] The nitrogen remote control valve group 6 and the carbon dioxide remote control valve group 15 are interlocked with the sensing signals of the sensor 10. The sensor 10 includes a smoke sensor, a temperature sensor, a flame detector, an infrared detector, and a video fire detector. The output signals of the sensors of these monitoring equipment are connected to the processor, and the processor is connected to the nitrogen remote control valve group 6 and the carbon dioxide remote control valve group 15. The processor is also connected to the alarm of the control center.

[0077] The operating steps of the dual-gas group intelligent fire extinguishing device in Example 1 of the present utility model are as follows:

[0078] External tank trucks deliver liquid nitrogen into liquid nitrogen storage tank 1 and liquid carbon dioxide into liquid carbon dioxide storage tank 20, respectively, to maintain appropriate reserves. After the sensor 10 detects a fire signal, the control center, after calculation and verification by the processor, issues a command to immediately open the nitrogen remote control valve group 6 and the carbon dioxide remote control valve group 15. The liquid nitrogen in the liquid nitrogen storage tank 1 enters the liquid nitrogen gasification device 4 through the inverted U-shaped pipe, and is converted into nitrogen gas. At the same time, the liquid carbon dioxide in the liquid carbon dioxide storage tank 20 enters the liquid carbon dioxide gasification device 17 through the inverted U-shaped pipe, and is converted into gaseous carbon dioxide. The two gases are fully mixed in the high-pressure mixer 12 and then sent to the area where the fire occurred.

[0079] The dual-gas group intelligent fire extinguishing device of the utility model is designed with a manual control valve for opening and closing in addition to the remote control valve.

[0080] The dual-gas group intelligent fire extinguishing device of the present utility model is mainly suitable for extinguishing fires in small flammable and explosive areas in petrochemical production areas. The data detected by various sensors (including smoke sensors, temperature sensors, flame detectors, infrared detectors, video fire detectors and other monitoring equipment) are calculated by the processor of the control center to determine whether a fire has occurred. If a fire is determined to have occurred, a command signal is output to start the fire extinguishing device.

[0081] The utility model discloses a dual-gas group intelligent fire extinguishing device, which can detect and extinguish fire in the first time when fire occurs through intelligent control of the fire extinguishing device. The nitrogen and carbon dioxide gases have a fast flow rate and a rapid reaction speed, which can effectively prevent the spread of fire and has the advantage of being reloadable multiple times.

[0082] Example 2

[0083] The rest is the same as Example 1, except that: the dual-gas group intelligent fire extinguishing device of Example 2 of the utility model is connected and communicated with the control system; the temperature, humidity, on-site video and other parameters of the fire extinguishing device installation site can be seen through the control system, and the upper and lower limit alarm values ​​of each parameter can be set, and the fire extinguishing device can be started or stopped; the control system includes a host computer, PLC, information processing module, sensor, and remote control valve. The host computer can observe the situation in the monitored area in real time, the PLC is used to receive information and send instructions, and the information processing module converts the received information and the sent instructions into digital signals; the sensor collects analog signals and converts them into digital signals, which are sent to the host computer by the PLC. The host computer screen displays various working parameters. The remote control valve and the sensor are information interlocked. After the sensor information has an alarm on the PLC, the information is confirmed and an instruction is immediately sent to the remote control valve to open the valve, deliver gas, and extinguish the fire, thereby realizing the intelligent fire extinguishing function.

[0084] Compared with simple carbon dioxide or nitrogen fire extinguishing devices, it can be found that the dual-gas group intelligent fire extinguishing device of the present invention combines low-cost carbon dioxide and nitrogen, further improves the range of carbon dioxide, shortens emergency response time, has low raw material costs, and is conducive to widespread promotion and application.

[0085] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed in the present invention, based on the technical solution and utility model concept or equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims

1. A dual-gas group intelligent fire extinguishing device, characterized by: Including liquid nitrogen storage tank, liquid nitrogen outlet pipe, first air release valve, liquid nitrogen gasification device, second air release valve, nitrogen remote control valve group, third air release valve, nitrogen manual control valve, pipeline, sensor, applicable area, high-pressure mixer, carbon dioxide manual control valve, fourth air release valve, carbon dioxide remote control valve group, fifth air release valve, liquid carbon dioxide gasification device, sixth air release valve, liquid carbon dioxide outlet pipe, liquid carbon dioxide storage tank; The liquid nitrogen storage tank is connected to the first air release valve through a liquid nitrogen outlet pipe, the first air release valve is connected to the inlet end of the liquid nitrogen gasification device through a pipeline, the outlet end of the liquid nitrogen gasification device is connected to one end of the second air release valve through a pipeline, the other end of the second air release valve is connected to one end of the nitrogen remote control valve group through a pipeline, the other end of the nitrogen remote control valve group is connected to one end of the third air release valve through a pipeline, the other end of the third air release valve is connected to one end of the nitrogen manual control valve through a pipeline, the other end of the nitrogen manual control valve is connected to the high-pressure mixer through a pipeline, and the high-pressure mixer is transported to each applicable area through a pipeline; The liquid carbon dioxide storage tank is connected to one end of the sixth air release valve through a liquid carbon dioxide outlet pipe, the other end of the sixth air release valve is connected to the inlet end of the liquid carbon dioxide gasification device through a pipeline, the outlet end of the liquid carbon dioxide gasification device is connected to one end of the fifth air release valve through a pipeline, the other end of the fifth air release valve is connected to one end of the carbon dioxide remote control valve group through a pipeline, the other end of the carbon dioxide remote control valve group is connected to one end of the fourth air release valve through a pipeline, the other end of the fourth air release valve is connected to one end of the carbon dioxide manual control valve through a pipeline, the other end of the carbon dioxide manual control valve is connected to the high-pressure mixer through a pipeline, and the high-pressure mixer is transported to the applicable area through a pipeline.

2. The dual-gas group intelligent fire extinguishing device according to claim 1, characterized in that: The specific structure of the high-pressure mixer is as follows: it includes a nitrogen inlet, a nozzle, a carbon dioxide gas inlet, an intake chamber, a mixing chamber, a diffusion chamber, and an air outlet; the nitrogen inlet is arranged at the front end of the nozzle, the nozzle is connected to the intake chamber, the carbon dioxide gas inlet is arranged at the side end of the intake chamber, the intake chamber is connected to the mixing chamber, the mixing chamber is connected to the diffusion chamber, and the air outlet is arranged at the end of the diffusion chamber.

3. The dual-gas group intelligent fire extinguishing device according to claim 2, characterized in that: The cross-sectional shape of the nozzle is trapezoidal, with a larger inlet and a smaller outlet. The cross-sectional shape of the carbon dioxide gas inlet is rectangular. The cross-sectional shape of the suction chamber is trapezoidal, with a larger inlet and a smaller outlet.

4. The dual-gas group intelligent fire extinguishing device according to claim 3, characterized in that: The cross-sectional shape of the mixing chamber is rectangular; the cross-sectional shape of the diffusion chamber is trapezoidal, with a smaller inlet and a larger outlet.

5. The dual-gas group intelligent fire extinguishing device according to claim 4, characterized in that: The liquid nitrogen storage tank adopts a double-wall structure, with the middle interlayer filled with pearl sand as the insulation material; the volume is 3-200 cubic meters.

6. The dual-gas group intelligent fire extinguishing device according to claim 5, characterized in that: The second air release valve, the third air release valve, the fourth air release valve and the fifth air release valve all include a pressure sensor and a safety valve, and the pressure sensor is connected to the safety valve.

7. The dual-gas group intelligent fire extinguishing device according to claim 6, characterized in that: The first air release valve and the sixth air release valve include a front end ball valve, a safety valve, and a rear end ball valve, and the front end ball valve is connected to the rear end ball valve through the safety valve.

8. The dual-gas group intelligent fire extinguishing device according to claim 7, characterized in that: The structure of the liquid nitrogen gasification device adopts an air-temperature vaporizer, which is a 304 inner sleeve plus an aluminum alloy heat exchange fin tube, and is set to match the liquid nitrogen evaporation capacity.

9. The dual-gas group intelligent fire extinguishing device according to claim 8, characterized in that: The sensors include smoke sensors, temperature sensors, flame detectors, infrared detectors and video fire detectors.

10. The dual-gas group intelligent fire extinguishing device according to claim 9, characterized in that: The liquid carbon dioxide storage tank adopts a double-wall structure, and the middle interlayer is filled with pearlescent sand as insulation material; the volume is 3-200 cubic meters; the applicable area includes pipelines and sensors, and the sensors are installed on the pipelines; the liquid nitrogen outlet pipe is an inverted U-shaped tube structure; the liquid carbon dioxide outlet pipe is an inverted U-shaped tube structure; the other end of the nitrogen manual control valve is connected to the nitrogen inlet in the high-pressure mixer through a pipeline; the other end of the carbon dioxide manual control valve is connected to the carbon dioxide gas inlet in the high-pressure mixer through a pipeline.

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