Electrical cabinet fire monitoring device

Abstract

The invention relates to the technical field of fire monitoring, in particular to an electrical cabinet fire monitoring device which comprises an alarm module and a monitoring module. The monitoring module comprises a controller and a monitoring module; the monitoring module comprises a monitoring interface, an insulating heat conduction pipe and a conductive thermal fuse; the inner diameter of the insulating heat conduction pipe is greater than the diameter of the conductive thermal fuse; the monitoring interface comprises an input interface and an output interface, the two ends of the conductive thermal fuse are connected to the input interface and the output interface respectively, and the middle portion between the two ends of the conductive thermal fuse penetrates through the insulating heat conduction pipe. The controller is electrically connected with the monitoring module, the controller supplies power to the output interface and detects whether the corresponding input interface is connected or not, and if not, the controller activates the alarm module; according to the invention, through the conductive thermal fuse, when the preset temperature is reached, the conductive thermal fuse is heated and molten, the molten conductive thermal fuse gathers into a group of metal liquid drops under the action of liquid level tension, the liquid metal liquid drops cannot maintain the filamentous state to form an open circuit, and then an alarm is given after the state is detected.

Description

Technical Field

[0001] The present invention relates to the technical field of fire monitoring, and in particular to a fire monitoring device for an electrical cabinet. Background Art

[0002] With the rapid development of industrialization and urbanization, electrical cabinets, as an important component of power systems, are widely used in industrial, commercial, and residential buildings. The normal operation of electrical cabinets is crucial to ensuring the stability and security of power supply.

[0003] Currently, fire monitoring in electrical cabinets primarily relies on traditional fire alarm systems, which typically detect fires based on a single parameter, such as temperature, smoke, or flame, or multiple parameters. However, these methods have limitations. For example, traditional smoke detectors primarily rely on smoke detection to trigger the alarm, meaning they typically issue warnings only after a fire has already occurred and smoke has been generated. This method is unable to predict the occurrence of a fire in advance, resulting in the warning often lagging behind the initial stage of the fire, missing the optimal time for intervention, and failing to locate the specific fault location. Therefore, there is a need for an electrical cabinet fire monitoring device that can achieve a rapid response and locate the specific fault line. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an electrical cabinet fire monitoring device which can achieve rapid response and locate a specific fault line.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: An electrical cabinet fire monitoring device is used for fire monitoring of an electrical cabinet, wherein a plurality of electrical components are arranged in the electrical cabinet; The electrical cabinet fire monitoring device includes a power supply, an alarm module and a monitoring module, wherein the power supply provides power to the alarm module and the monitoring module; The monitoring module includes a controller and monitoring modules corresponding in number to the electrical components. The monitoring module includes a monitoring interface, an insulating heat pipe and a conductive thermal fuse; the conductive thermal fuse is made of tin-bismuth alloy; The insulating heat-conducting pipe is bonded to the electrical component by a heat-conducting adhesive; the insulating heat-conducting pipe is a hollow pipe, and the inner diameter of the hollow pipe is larger than the diameter of the conductive thermal fuse; the melting temperature of the insulating heat-conducting pipe and the heat-conducting adhesive is higher than that of the conductive thermal fuse; The monitoring interface includes an input interface and an output interface, and the two ends of the conductive thermal fuse are respectively connected to the input interface and the output interface. The middle portion between the two ends of the conductive thermal fuse passes through the insulating thermal pipe, and the length of the conductive thermal fuse passing through the insulating thermal pipe is greater than the length of the insulating thermal pipe. After the conductive thermal fuse passes through the insulating thermal pipe, the two ends of the insulating thermal pipe are sealed. The controller is electrically connected to the monitoring module. The controller controls the power supply to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module to sound an alarm.

[0006] Preferably, a portion of the surface of the conductive thermal fuse located outside the insulating heat-conducting tube is wrapped with an insulating heat-insulating film.

[0007] Preferably, the insulating and heat-insulating film is a polyimide film or a mica paper film.

[0008] Preferably, the electrical cabinet fire monitoring device further includes a cloud, and the cloud is communicatively connected to the monitoring module.

[0009] Preferably, the monitoring module further includes an infrared camera; The controller is electrically connected to the infrared camera. The controller controls the power supply to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module to sound an alarm. At the same time, the controller controls the infrared camera to take pictures of the electrical components corresponding to the no return signal and upload them to the cloud.

[0010] Preferably, the electrical cabinet fire monitoring device further comprises a fire extinguishing agent bottle arranged in the electrical cabinet, and the fire extinguishing agent bottle comprises a solenoid valve; When the controller activates the alarm module to sound an alarm, it simultaneously controls the solenoid valve to open to extinguish the fire.

[0011] Preferably, the fire extinguishing agent bottle is filled with perfluorohexanone gas.

[0012] Preferably, the electrical cabinet includes a power supply, and the power supply includes a battery and a power supply line, and the battery and the power supply line are electrically connected to the power supply respectively.

[0013] Preferably, the battery is a lead-acid battery.

[0014] Preferably, two ends of the conductive thermal fuse are detachably connected to the input interface and the output interface respectively.

[0015] The beneficial effects of the present invention are as follows: by making the length of the conductive thermal fuse passing through the insulating heat-conducting pipe greater than the length of the insulating heat-conducting pipe, part of the conductive thermal fuse is in contact with the inner wall of the insulating heat-conducting pipe, thus avoiding the situation where the conductive thermal fuse is suspended in the insulating heat-conducting pipe, and there is still enough idle space in the insulating heat-conducting pipe; in combination with the setting of the insulating heat-conducting pipe and the thermal conductive adhesive with a higher melting temperature, the insulating heat-conducting pipe and the thermal conductive adhesive can transfer the heat of the electrical components to the conductive thermal fuse. When the predetermined temperature is reached, the conductive thermal fuse is heated and melted. Since the conductive thermal fuse is tin-bismuth After melting, the alloy will gather into a ball of metal droplets under the action of liquid surface tension, and the idle space can just accommodate the liquid tin-bismuth alloy metal droplets. The liquid tin-bismuth alloy metal droplets cannot maintain a filamentous shape, thus forming a short circuit. In addition, by sealing both ends of the insulating heat pipe, the liquid tin-bismuth alloy will only flow in the insulating heat pipe and will not drip onto other electrical components to cause a chain reaction of accidents. The sealing can also prevent the oxidation of the conductive thermal fuse and ensure a sufficient service life. The overall structure is simple, which can be easily modified for existing electrical cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A simplified structural diagram of an electrical cabinet fire monitoring device according to a specific embodiment of the present invention; Figure 2 This is a schematic diagram of a first state of cooperation between an insulating heat-conducting pipe and a conductive thermal fuse in an electrical cabinet fire monitoring device according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of a second state of cooperation between an insulating heat-conducting pipe and a conductive thermal fuse in an electrical cabinet fire monitoring device according to a specific embodiment of the present invention; Explanation of the numbers: 1. Electrical components; 2. Power supply; 3. Alarm module; 4. Monitoring module; 41. Monitoring interface; 42. Insulated heat pipe; 43. Conductive thermal fuse; 44. Sealing; 45. Metal droplets; 46. Infrared camera; 5. Cloud; 6. Fire extinguisher bottle; 61. Solenoid valve. DETAILED DESCRIPTION

[0017] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figures 1 to 3 , an electrical cabinet fire monitoring device, used for fire monitoring of an electrical cabinet, wherein a plurality of electrical components 1 are arranged in the electrical cabinet; The electrical cabinet fire monitoring device includes a power supply 2, an alarm module 3 and a monitoring module 4, wherein the power supply 2 provides power to the alarm module 3 and the monitoring module 4; The monitoring module 4 includes a controller and a number of monitoring modules 4 corresponding to the number of electrical components 1. The monitoring module 4 includes a monitoring interface 41, an insulating heat pipe 42 and a conductive thermal fuse 43; the conductive thermal fuse 43 is made of tin-bismuth alloy; The insulating heat-conducting pipe 42 is bonded to the electrical component 1 by means of a heat-conducting adhesive. The insulating heat-conducting pipe 42 is a hollow pipe, and the inner diameter of the hollow pipe is larger than the diameter of the conductive thermal fuse 43. The melting temperature of the insulating heat-conducting pipe 42 and the heat-conducting adhesive is higher than that of the conductive thermal fuse 43. The monitoring interface 41 includes an input interface and an output interface. The two ends of the conductive thermal fuse 43 are respectively connected to the input interface and the output interface. The middle portion between the two ends of the conductive thermal fuse 43 passes through the insulating heat-conducting tube 42. The length of the conductive thermal fuse 43 passing through the insulating heat-conducting tube 42 is greater than the length of the insulating heat-conducting tube 42. After the conductive thermal fuse 43 passes through the insulating heat-conducting tube 42, the two ends of the insulating heat-conducting tube 42 are sealed 44. The controller is electrically connected to the monitoring module 4. The controller controls the power supply 2 to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module 3 to sound an alarm.

[0019] As can be seen from the above description, the length of the conductive thermal fuse 43 passing through the insulating heat-conducting tube 42 is greater than the length of the insulating heat-conducting tube 42, so that part of the conductive thermal fuse 43 is in contact with the inner wall of the insulating heat-conducting tube 42, thereby avoiding the situation where the conductive thermal fuse 43 is suspended in the insulating heat-conducting tube 42, and there is still enough idle space in the insulating heat-conducting tube 42; with the setting of the insulating heat-conducting tube 42 and the thermal conductive adhesive having a higher melting temperature, the insulating heat-conducting tube 42 and the thermal conductive adhesive can transfer the heat of the electrical component 1 to the conductive thermal fuse 43. When the predetermined temperature is reached, the conductive thermal fuse 43 is heated and melted. 3 is a tin-bismuth alloy. After melting, it will gather into a group of metal droplets 45 under the action of liquid surface tension. The idle space can just accommodate the liquid tin-bismuth alloy droplets 45. The liquid tin-bismuth alloy droplets 45 cannot maintain a filamentary shape, thereby forming a short circuit. In addition, by sealing 44 at both ends of the insulating heat pipe 42, the liquid tin-bismuth alloy will only flow in the insulating heat pipe 42 and will not drip onto other electrical components 1 and cause a chain reaction of accidents. In addition, the sealing 44 can also prevent oxidation of the conductive thermal fuse 43, ensuring a sufficient service life. The overall structure is simple, which can be easily modified for existing electrical cabinets.

[0020] Furthermore, a portion of the surface of the conductive thermal fuse 43 located outside the insulating heat-conducting tube 42 is wrapped with an insulating heat-insulating film.

[0021] From the above description, it can be seen that the insulating film can prevent the conductive thermal fuse 43 from being melted by fire accidents of other electrical components 1, thereby causing false alarms, and also reduce oxidation during daily use.

[0022] Furthermore, the insulating and heat-insulating film is a polyimide film or a mica paper film.

[0023] Furthermore, the electrical cabinet fire monitoring device also includes a cloud 5 , which is communicatively connected to the monitoring module 4 .

[0024] From the above description, it can be seen that through the setting of the cloud 5, fire information can be collected in a timely manner. After the data is collected, the accuracy of fire accident diagnosis can be improved.

[0025] Furthermore, the monitoring module 4 also includes an infrared camera 46; The controller is electrically connected to the infrared camera 46. The controller controls the power supply 2 to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module 3 to sound an alarm. At the same time, the controller controls the infrared camera 46 to take pictures of the electrical components 1 corresponding to the no return signal and upload them to the cloud 5.

[0026] From the above description, it can be seen that through the setting of the infrared camera 46, since the infrared characteristics of electrical fires are obvious, direct shooting can determine the location of the problem and upload it to the cloud 5, which can facilitate the cloud 5 staff to conduct centralized and timely diagnosis and then dispatch maintenance tasks to improve efficiency.

[0027] Furthermore, the electrical cabinet fire monitoring device further comprises a fire extinguishing agent bottle 6 disposed in the electrical cabinet, and the fire extinguishing agent bottle 6 comprises a solenoid valve 61; When the controller activates the alarm module 3 to sound an alarm, it simultaneously controls the electromagnetic valve 61 to open to extinguish the fire.

[0028] It can be seen from the above description that, by disposing the fire extinguishing agent bottle 6, it is possible to extinguish the fire in time and prevent the fire from spreading.

[0029] Furthermore, the fire extinguishing agent bottle 6 is filled with perfluorohexanone gas.

[0030] Furthermore, the electrical cabinet includes a power supply, and the power supply 2 includes a battery and a power supply line, and the battery and the power supply line are electrically connected to the power supply 2 respectively.

[0031] From the above description, it can be seen that direct power supply through the power supply line and the battery as an independent power source can avoid the situation where the electrical cabinet fire monitoring device is powered off and fails after an accident when the power supply source is used as the electrical component 1.

[0032] Furthermore, the battery is a lead-acid battery.

[0033] From the above description, it can be seen that lead-acid batteries are safer because they are used in an electrical cabinet and there is a risk of fire. Lithium-ion batteries are prone to explosion.

[0034] Furthermore, two ends of the conductive thermal fuse 43 are detachably connected to the input interface and the output interface respectively.

[0035] It can be seen from the above description that the detachable connection structure can facilitate wiring, adjustment of the conductive thermal fuse 43 and replacement of the conductive thermal fuse 43 . Example 1

[0036] An electrical cabinet fire monitoring device is used for fire monitoring of an electrical cabinet. The electrical cabinet is provided with a plurality of electrical components 1. The electrical components 1 include circuit boards, relays, cables, copper busbars and other components in the electrical cabinet. All components in the electrical cabinet can be electrical components 1.

[0037] The electrical cabinet fire monitoring device includes a power supply 2, an alarm module 3 and a monitoring module 4, wherein the power supply 2 provides power to the alarm module 3 and the monitoring module 4; The monitoring module 4 includes a controller and a number of monitoring modules 4 corresponding to the number of electrical components 1. The monitoring module 4 includes a monitoring interface 41, an insulating heat pipe 42, and a conductive thermal fuse 43. The conductive thermal fuse 43 is made of a tin-bismuth alloy. The melting point of the tin-bismuth alloy can be customized according to the formulation as needed, for example, 60°C, 70°C, 80°C, etc. This is a mature process and is also existing technology. The insulating heat-conducting pipe 42 is bonded to the electrical component 1 by means of a heat-conducting adhesive. The insulating heat-conducting pipe 42 is a hollow pipe, and the inner diameter of the hollow pipe is larger than the diameter of the conductive thermal fuse 43. The melting temperature of the insulating heat-conducting pipe 42 and the heat-conducting adhesive is higher than that of the conductive thermal fuse 43. The monitoring interface 41 includes an input interface and an output interface. The two ends of the conductive thermal fuse 43 are respectively connected to the input interface and the output interface. The middle portion between the two ends of the conductive thermal fuse 43 passes through the insulating heat-conducting tube 42. The length of the conductive thermal fuse 43 passing through the insulating heat-conducting tube 42 is greater than the length of the insulating heat-conducting tube 42. After the conductive thermal fuse 43 passes through the insulating heat-conducting tube 42, the two ends of the insulating heat-conducting tube 42 are sealed 44. The controller is electrically connected to the monitoring module 4. The controller controls the power supply 2 to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module 3 to sound an alarm.

[0038] The surface of the conductive thermal fuse 43 located outside the insulating heat-conducting tube 42 is wrapped with an insulating heat-insulating film.

[0039] The insulating and heat-insulating film is a polyimide film or a mica paper film.

[0040] The electrical cabinet fire monitoring device also includes a cloud 5, which is connected to the monitoring module 4 in communication, which can be a wired connection or a wireless connection. If it is a wireless connection, it can be connected through WiFi, or an additional communication module can be added for communication connection, such as a Bluetooth module, a 4G module, or a 5G module.

[0041] The monitoring module 4 also includes an infrared camera 46; The controller is electrically connected to the infrared camera 46. The controller controls the power supply 2 to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module 3 to sound an alarm. At the same time, the controller controls the infrared camera 46 to take pictures of the electrical components 1 corresponding to the no return signal and upload them to the cloud 5.

[0042] The electrical cabinet fire monitoring device further includes a fire extinguishing agent bottle 6 disposed in the electrical cabinet, and the fire extinguishing agent bottle 6 includes a solenoid valve 61; When the controller activates the alarm module 3 to sound an alarm, it simultaneously controls the electromagnetic valve 61 to open to extinguish the fire.

[0043] The fire extinguishing agent bottle 6 is filled with perfluorohexanone gas.

[0044] The electrical cabinet includes a power supply, and the power supply 2 includes a battery and a power supply line, and the battery and the power supply line are electrically connected to the power supply respectively.

[0045] The battery is a lead-acid battery.

[0046] Two ends of the conductive thermal fuse 43 are detachably connected to the input interface and the output interface respectively. Example 2

[0047] An electrical cabinet fire monitoring device is used for fire monitoring of an electrical cabinet. The electrical cabinet is provided with a plurality of electrical components 1. The electrical components 1 include circuit boards, relays, cables, copper busbars and other components in the electrical cabinet. All components in the electrical cabinet can be electrical components 1.

[0048] The electrical cabinet fire monitoring device includes a power supply 2, an alarm module 3 and a monitoring module 4, wherein the power supply 2 provides power to the alarm module 3 and the monitoring module 4; The monitoring module 4 includes a controller and a number of monitoring modules 4 corresponding to the number of electrical components 1. The monitoring module 4 includes a monitoring interface 41, an insulating heat pipe 42, and a conductive thermal fuse 43. The conductive thermal fuse 43 is made of a tin-bismuth alloy. The melting point of the tin-bismuth alloy can be customized according to the formulation as needed, for example, 60°C, 70°C, 80°C, etc. This is a mature process and is also existing technology. The insulating heat-conducting pipe 42 is bonded to the electrical component 1 by means of a heat-conducting adhesive. The insulating heat-conducting pipe 42 is a hollow pipe, and the inner diameter of the hollow pipe is larger than the diameter of the conductive thermal fuse 43. The melting temperature of the insulating heat-conducting pipe 42 and the heat-conducting adhesive is higher than that of the conductive thermal fuse 43. The monitoring interface 41 includes an input interface and an output interface. The two ends of the conductive thermal fuse 43 are respectively connected to the input interface and the output interface. The middle portion between the two ends of the conductive thermal fuse 43 passes through the insulating heat-conducting tube 42. The length of the conductive thermal fuse 43 passing through the insulating heat-conducting tube 42 is greater than the length of the insulating heat-conducting tube 42. After the conductive thermal fuse 43 passes through the insulating heat-conducting tube 42, the two ends of the insulating heat-conducting tube 42 are sealed 44. The controller is electrically connected to the monitoring module 4. The controller controls the power supply 2 to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module 3 to sound an alarm.

[0049] The surface of the conductive thermal fuse 43 located outside the insulating heat-conducting tube 42 is wrapped with an insulating heat-insulating film.

[0050] The insulating and heat-insulating film is a polyimide film or a mica paper film.

[0051] The electrical cabinet includes a power supply, and the power supply 2 includes a battery and a power supply line, and the battery and the power supply line are electrically connected to the power supply respectively.

[0052] The battery is a lead-acid battery.

[0053] Two ends of the conductive thermal fuse 43 are detachably connected to the input interface and the output interface respectively.

[0054] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electrical cabinet fire monitoring device, used for fire monitoring of an electrical cabinet, wherein a plurality of electrical components are arranged in the electrical cabinet; It is characterized by: The electrical cabinet fire monitoring device includes a power supply, an alarm module and a monitoring module, wherein the power supply provides power to the alarm module and the monitoring module; The monitoring module includes a controller and monitoring modules corresponding in number to the electrical components. The monitoring module includes a monitoring interface, an insulating heat pipe and a conductive thermal fuse; the conductive thermal fuse is made of tin-bismuth alloy; The insulating heat-conducting pipe is bonded to the electrical component by a heat-conducting adhesive; the insulating heat-conducting pipe is a hollow pipe, and the inner diameter of the hollow pipe is larger than the diameter of the conductive thermal fuse; the melting temperature of the insulating heat-conducting pipe and the heat-conducting adhesive is higher than that of the conductive thermal fuse; The monitoring interface includes an input interface and an output interface, and the two ends of the conductive thermal fuse are respectively connected to the input interface and the output interface. The middle portion between the two ends of the conductive thermal fuse passes through the insulating thermal pipe, and the length of the conductive thermal fuse passing through the insulating thermal pipe is greater than the length of the insulating thermal pipe. After the conductive thermal fuse passes through the insulating thermal pipe, the two ends of the insulating thermal pipe are sealed. The controller is electrically connected to the monitoring module. The controller controls the power supply to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module to sound an alarm.

2. The electrical cabinet fire monitoring device according to claim 1, characterized in that: The surface of the conductive thermal fuse located outside the insulating heat-conducting tube is wrapped with an insulating heat-insulating film.

3. The electrical cabinet fire monitoring device according to claim 2, characterized in that: The insulating and heat-insulating film is a polyimide film or a mica paper film.

4. The electrical cabinet fire monitoring device according to claim 1, characterized in that: The electrical cabinet fire monitoring device also includes a cloud, which is communicatively connected to the monitoring module.

5. The electrical cabinet fire monitoring device according to claim 4, characterized in that: The monitoring module also includes an infrared camera; The controller is electrically connected to the infrared camera. The controller controls the power supply to supply power to the output interface and detects whether the corresponding input interface has a return signal. If so, the controller does not take any action. If not, the controller activates the alarm module to sound an alarm. At the same time, the controller controls the infrared camera to take pictures of the electrical components corresponding to the no return signal and upload them to the cloud.

6. The electrical cabinet fire monitoring device according to claim 1, characterized in that: The electrical cabinet fire monitoring device further includes a fire extinguishing agent bottle disposed in the electrical cabinet, the fire extinguishing agent bottle including a solenoid valve; When the controller activates the alarm module to sound an alarm, it simultaneously controls the solenoid valve to open to extinguish the fire in the electrical cabinet.

7. The electrical cabinet fire monitoring device according to claim 6, characterized in that: The fire extinguishing agent bottle is filled with perfluorohexanone gas.

8. The electrical cabinet fire monitoring device according to claim 1, characterized in that: The electrical cabinet includes a power supply, and the power supply includes a battery and a power supply line, and the battery and the power supply line are electrically connected to the power supply respectively.

9. The electrical cabinet fire monitoring device according to claim 8, characterized in that: The battery is a lead-acid battery.

10. The electrical cabinet fire monitoring device according to claim 1, characterized in that: The two ends of the conductive thermal fuse are detachably connected to the input interface and the output interface respectively.

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