A rail-mounted automatic fire extinguishing device applicable to electrical switchboards and its fire extinguishing method

Abstract

The present invention relates to a rail-type automatic fire extinguishing device applicable to electrical switch cabinets, including a mounted audio-video acquisition device, an audio-video playback device, an automated electromechanical device, and a rail-type automatic fire extinguishing device. The rail-type automatic fire extinguishing device includes a perfluoromethylcyclohexane fire extinguishing device and a patrol and extinguishing integrated robot placed on a circulating track, a thermal imaging image-type fire detector, a communication system, and a monitoring platform. The patrol and extinguishing integrated robot is equipped with a thermal imaging image-type fire detector, a mounted audio-video acquisition device, and an audio-video playback device. The thermal imaging image-type fire detector and the mounted audio-video acquisition device transmit image information to the monitoring platform through the communication system. Beneficial effects: The device supports control via TCP / IP and RS485 to achieve the online control function of the device. The thermal imaging image-type fire detector can detect the internal temperature and flame image without being affected by occlusion, and quickly complete the fire alarm output and positioning for fire extinguishing within a short time.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguishing control systems, and in particular to a guide rail type automatic fire extinguishing device suitable for an electrical panel cabinet and a fire extinguishing method thereof. Background Art

[0002] In recent years, my country has vigorously developed UHV AC / DC technology suitable for long-distance and large-capacity power transmission in response to the reverse distribution of energy and load during the transition period of UHV AC / DC hybrid power grid construction, as well as the urgent needs for clean energy delivery and energy conservation and emission reduction in load center power supply. UHV stations have a large number of electrical cabinets with complex functions, and electrical cabinet fires are also one of the main fires in UHV stations. Fires in electrical cabinets are characterized by distribution, continuity, and concealment.

[0003] When a fire occurs, it is difficult to be discovered in the early stage, and the fire is fierce and develops rapidly in the later stage. Moreover, most fires in electrical cabinets occur in buildings, where there are many combustibles, close personnel, poor smoke exhaust, and difficult evacuation, which can easily cause a large number of equipment damage and mass casualties. In view of this, we urgently need an automatic fire extinguishing device and fire extinguishing method that can detect and extinguish electrical cabinet fires in time. Summary of the invention

[0004] The purpose of the present invention is to provide a rail-type automatic fire extinguishing device suitable for an electrical cabinet and a fire extinguishing method thereof, which solves the technical problems that the electrical cabinet has poor safety performance, is easy to aggravate the fire in a building, has poor smoke exhaust, is easy to cause damage to power equipment, is difficult to detect the fire, and affects the normal life of personnel. The present invention is achieved through the following scheme.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a rail-type automatic fire extinguishing device suitable for electrical cabinets, characterized in that it includes a mounted audio and video acquisition device, an audio and video playback device, an automated electromechanical device and a rail-type automatic fire extinguishing device, wherein the rail-type automatic fire extinguishing device includes a perfluorohexanone fire extinguishing device and a patrol and extinguishing integrated robot, a thermal imaging image type fire detector, a communication system and a monitoring platform placed on a circulating track;

[0006] The patrol-extinguishing integrated robot is equipped with a thermal imaging fire detector, a mounted audio and video acquisition device, and an audio and video playback device. The thermal imaging fire detector and the mounted audio and video acquisition device transmit image information to the monitoring platform through a communication system. The output end of the monitoring platform is driven and connected to a perfluorohexanone fire extinguishing device and the patrol-extinguishing integrated robot, and the monitoring platform displays external image and sound information through the audio and video playback device.

[0007] The integrated inspection and extinguishing robot is installed on an orbit above the switchgear cubicles, and multiple switchgear cubicles share a hanging-rail robot. The robot can move freely on the orbit through automated electromechanical equipment. The integrated inspection and extinguishing robot is equipped with a perfluoromethylcyclohexanone fire extinguishing device and a supporting nozzle.

[0008] Further, a driving device is installed on the integrated inspection and extinguishing robot and is placed on a circulating orbit. The driving device includes a driving wheel connected to a driving motor. The driving wheel is connected with a first concave groove along the length direction of the I-shaped rod orbit. A driven wheel connected to a bracket is arranged directly above the driving wheel. The driving wheel and the driven wheel are respectively arranged vertically and horizontally, and the driven wheel is connected with a second concave groove along the length of the I-shaped rod orbit.

[0009] Further, the perfluoromethylcyclohexanone fire extinguishing device consists of perfluoromethylcyclohexanone fire extinguishing agent, a gas generating agent device, a high-pressure diaphragm and a housing. When the perfluoromethylcyclohexanone fire extinguishing device receives a fire alarm signal, the gas generating agent device is driven by a 24V DC voltage. The gas generating agent device generates high-pressure gas to break through the high-pressure diaphragm, and sprays the perfluoromethylcyclohexanone fire extinguishing agent to the protected equipment through the nozzle.

[0010] Further, it includes the following steps:

[0011] S1: Obtain the temperature distribution characteristic curve of the detection field through a thermal imaging image-type fire detector, and run S2;

[0012] S2: Obtain and calculate the lowest, highest and average temperatures in the curve interval, and run S3;

[0013] S3: Detect and track the highest and lowest temperature points in the detection scene, and run S4;

[0014] S4: Compare with the combustion data and combustion temperature fitting curve of the fire test. If the fitting degree reaches the set value, run S5; otherwise, run S2;

[0015] S5: According to the comparison result, send the longitude and latitude coordinates of the abnormal area, and run S5;

[0016] S6: Output an alarm signal.

[0017] Further, in step S2, the time threshold of the curve interval is greater than one period of the test combustion temperature fitting curve and less than two periods of the test combustion temperature fitting curve.

[0018] Further, when comparing the fitting curves in step S4, the highest and lowest temperature points obtained in step S3 are respectively overlapped with the highest and lowest temperature points of the test combustion temperature fitting curve.

[0019] Further, the detector is embedded with a thermal imaging fire image algorithm, which can automatically locate the fire source position, send the position coordinates to the robot communication module, the robot slides to the specified coordinate position, and after successful positioning, it feeds back the positioning signal and starts extinguishing the fire.

[0020] The technical effects of the present invention are as follows:

[0021] 1. The rail-mounted automatic fire extinguishing device for electrical switch cabinets is a product that integrates fire source detection and extinguishing. It can be equipped with audio-video acquisition devices, audio-visual playback devices, automated electromechanical devices, and perfluorinated hexanone fire extinguishing devices. The device supports TCP / IP and RS485 for control to achieve the online control function of the devices;

[0022] 2. The thermal imaging image type fire detector can detect the internal temperature and flame image without being affected by occlusion, and quickly complete the fire alarm output within a short time. The detector is embedded with a thermal imaging fire image algorithm, which can automatically locate the fire source position, send the position coordinates to the robot communication module, the robot slides to the specified coordinate position, and after successful positioning, it feeds back the positioning signal and starts extinguishing the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic layout diagram of the rail-mounted automatic fire extinguishing device of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of part A;

[0025] Figure 3 It is a schematic structure diagram of the integrated patrol and extinguish robot of the present invention Figure 1 ;

[0026] Figure 4 It is a schematic structure diagram of the integrated patrol and extinguish robot of the present invention Figure 2 ;

[0027] Figure 5 It is a schematic diagram of an exemplary embodiment of the thermal imaging image type fire detector in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] Referring to the attached Figures 1-5 , a rail-mounted automatic fire extinguishing device applicable to electrical switch cabinets, characterized in that it includes a mounted audio-video acquisition device, an audio-visual playback device, an automated electromechanical device, and a rail-type automatic fire extinguishing device. The rail-type automatic fire extinguishing device includes a perfluorinated hexanone fire extinguishing device placed on a circulating track, an integrated patrol and extinguish robot, a thermal imaging image type fire detector, a communication system, and a monitoring platform;

[0029] The integrated patrol and extinguishing robot is equipped with a thermal imaging image-type fire detector, a mounted audio-video acquisition device, and an audio-video playback device. The thermal imaging image-type fire detector and the mounted audio-video acquisition device transmit image information to the monitoring platform through the communication system. The output end of the monitoring platform is drivingly connected to a perfluorinated hexanone fire extinguishing device and the integrated patrol and extinguishing robot, and the monitoring platform displays external image and sound information through the audio-video playback device;

[0030] The integrated patrol and extinguishing robot is installed on the track above the switchgear cabinet, and multiple switchgear cabinets share a hanging-rail robot. The robot can move freely on the track through automated electromechanical equipment. The integrated patrol and extinguishing robot is equipped with a perfluorinated hexanone fire extinguishing device and a supporting nozzle.

[0031] In a specific embodiment of this solution, the integrated patrol and extinguishing robot is installed with a driving device on a circular track. The driving device includes a driving wheel connected to a driving motor. The driving wheel is connected with a first concave groove along the track length direction of the I-shaped rod. A driven wheel connected to a bracket is arranged directly above the driving wheel. The driving wheel and the driven wheel are respectively arranged vertically and horizontally, and the driven wheel is connected with a second concave groove along the track length of the I-shaped rod.

[0032] In a specific embodiment of this solution, the perfluorinated hexanone fire extinguishing device is composed of perfluorinated hexanone fire extinguishing agent, a gas-generating agent device, a high-pressure diaphragm, and a housing. When the perfluorinated hexanone fire extinguishing device receives a fire alarm signal, the gas-generating agent device is driven by a 24V DC voltage. The gas-generating agent device generates high-pressure gas to break through the high-pressure diaphragm, and sprays the perfluorinated hexanone fire extinguishing agent to the protected equipment through the nozzle.

[0033] A rail-type automatic fire extinguishing method applicable to electrical switchgear cabinets is characterized by including the following steps:

[0034] S1: Obtain the temperature distribution characteristic curve of the detection field through the thermal imaging image-type fire detector, and run S2;

[0035] S2: Obtain and calculate the lowest, highest, and average temperatures in the curve interval, and run S3;

[0036] S3: Detect and track the highest and lowest temperature points in the detection scene, and run S4;

[0037] S4: Compare the combustion data and combustion temperature fitting curve of the fire test. If the fitting degree reaches the set value, run S5, otherwise run S2;

[0038] S5: According to the comparison result, send the longitude and latitude coordinates of the abnormal area, and run S5;

[0039] S6: Output an alarm signal.

[0040] A specific embodiment of the present scheme is that the time threshold of the curve interval in step S2 is greater than one cycle of the test combustion temperature fitting curve and less than two cycles of the test combustion temperature fitting curve. When comparing the fitting curve in step S4, the highest temperature point and the lowest temperature point obtained in step S3 are overlapped with the highest temperature point and the lowest temperature point of the test combustion temperature fitting curve respectively. The detector is embedded with a thermal imaging fire image algorithm, which can automatically locate the fire source and send the position coordinates to the robot communication module. The robot slides to the specified coordinate position, feeds back a positioning signal after successful positioning, and starts fire extinguishing.

[0041] The specific embodiment of this scheme is that the integrated fire-fighting robot is equipped with a thermal imaging video camera to detect fire flames in the protected area. The image-type fire detector mainly collects the visible light and infrared video image data of the scene in real time through visible light, infrared and thermal imaging images, quantifies the parametric characteristics of the fire, extracts the characteristic parameter information closely related to the fire development process, and the distribution characteristics of the flame field temperature, and adopts the characteristic weighting mechanism to determine the fire flame image. The thermal infrared video camera can assist in fire detection and can be used for daily cabinet inspection. When the temperature in a cabinet is abnormal and exceeds the set threshold, an alarm can be issued. Experiments have shown that when a miniature oil pool fire with a diameter of 20cm is ignited at the bottom and middle of a completely sealed metal cabinet with an outer wall thickness of 3mm, the thermal imaging image-type fire detector can detect the internal temperature and flame image without being affected by the obstruction, and complete the fire alarm output within 3S. The detector is embedded with a thermal imaging fire image algorithm, which can automatically locate the fire source position, send the position coordinates to the robot communication module, and the robot slides to the specified coordinate position. After successful positioning, it feedbacks the positioning signal and starts the fire extinguishing.

[0042] A specific embodiment of the present scheme is that the perfluorohexanone fire extinguishing device mainly uses the fire extinguishing agent perfluorohexanone to quickly vaporize and remove heat, causing the temperature to drop, and the fire will naturally go out. Perfluorohexanone itself will form an isolation layer to isolate oxygen and can also quickly extinguish the fire.

[0043] The specific embodiment of this scheme is as follows: Figure 4 It can be seen that the driving device adopts a vertical driving wheel and a horizontal driven wheel. Under the driving connection, the driving wheel can move translationally in the first concave groove, and then drive the driven wheel to move translationally in the second concave groove, which can effectively achieve the accuracy of the transmission position and prevent the movement position from deviating.

[0044] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rail-mounted automatic fire extinguishing method applicable to electrical switch cabinets, characterized in that, it includes the following steps: S1: Obtain the temperature distribution characteristic curve of the detection field through a thermal imaging image-type fire detector, and run S2; S2: Obtain and calculate the lowest, highest, and average temperatures in the curve interval, and run S3; S3: Detect and track the highest and lowest temperature points in the detection scene, and run S4; S4: Compare the combustion data and combustion temperature fitting curve of the fire test. If the fitting degree reaches the set value, run S5, otherwise run S2; S5: According to the comparison result, send the longitude and latitude coordinates of the abnormal area, and run S6; S6: Output an alarm signal; In step S2, the time threshold of the curve interval is greater than one period of the test combustion temperature fitting curve and less than two periods of the test combustion temperature fitting curve; When comparing the fitting curves in step S4, overlap the highest and lowest temperature points obtained in step S3 with the highest and lowest temperature points of the test combustion temperature fitting curve respectively.

2. The rail-mounted automatic fire extinguishing method applicable to electrical switch cabinets according to claim 1, characterized in that, The detector is embedded with a thermal imaging fire image algorithm, which can automatically locate the fire source position, send the position coordinates to the robot communication module, the robot slides to the specified coordinate position, and after successful positioning, feedback the positioning signal and start extinguishing the fire.

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