Overheat monitoring device for power distribution cabinet

Abstract

The utility model relates to the technical field of equipment monitoring, in particular to a power distribution and utilization cabinet overheating monitoring device which comprises a lower shell, a detection module, a filtering module and a power supply module are installed in the lower shell, and the detection module is electrically connected with the power supply module; an inner partition plate is buckled on the lower shell, a main board PCB is installed on the inner partition plate, the main board PCB is electrically connected with the power supply module, the main board PCB is further electrically connected with a display screen module, and the display screen module is located above the main board PCB; an upper shell is buckled on the lower shell, and the top of the display screen module is inserted into the upper shell. According to the utility model, through the arrangement of the detection module and the filtering module, the problem that an accident is caused as long as the device gives an alarm when a fire occurs is solved, and when an overheating condition occurs, measures can be taken immediately to prevent the electric cabinet from thermal runaway.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment monitoring, in particular to an overheating monitoring device for an electrical cabinet. Background Art

[0002] With the development of my country's economy, the number of electrical equipment is increasing. Small, enclosed spaces such as energy storage compartments, electrical cabinets, and data cabinets in computer rooms are increasingly used, and their frequency is increasing. After long-term use, insulation materials will continue to age, reducing system safety performance. Overheating can also occur, leading to thermal runaway accidents and even fires, posing safety hazards. Therefore, using monitoring devices to detect overheating hazards within electrical equipment is a key safety precaution.

[0003] Monitoring devices provide real-time monitoring and analysis of various equipment and systems during use, primarily including temperature monitoring, gas monitoring, and particle monitoring. Particle monitoring involves detecting tiny solid particles or smoke that may be generated when a system overheats or experiences an overheating event. These particles are typically caused by material combustion, thermal decomposition, or other chemical reactions and can be a precursor to a fire. Particle monitoring plays a vital role in fire hazard detection, safety, thermal runaway, and early warning.

[0004] Chinese patent CN216162194U discloses an electrical fire early warning and monitoring device for a power plant distribution cabinet, comprising a first shell, a monitoring mechanism, and a mounting plate, wherein the monitoring mechanism is arranged at the bottom of the first shell, and the mounting plate is arranged on the right side of the first shell. This electrical fire early warning and monitoring device for a power plant distribution cabinet, by installing the monitoring device at the ventilation opening of the distribution cabinet, starts a fan to suck air into the interior of the distribution cabinet, draws air inside the distribution cabinet into the distribution cabinet, and discharges the air out of the distribution cabinet through a second shell. The air passes through a smoke sensor inside the second shell and is monitored in real time by the smoke sensor. At the same time, starting the fan can accelerate the airflow rate inside the distribution cabinet, improving the heat dissipation of the distribution cabinet. At the same time, once a fire occurs, the smoke generated will be quickly sucked into the second shell and detected by the smoke sensor, and an alarm will be sounded through the alarm, thereby improving the timeliness of the fire early warning.

[0005] The monitoring method of the above-mentioned patent detects smoke and flames in the area. When smoke or even flames are detected in the area, the fire has already developed to a more serious situation. Therefore, there is an urgent need for a device that can monitor and warn of fire in the very early stage of the fire to improve the preemptiveness of electrical equipment overheating fault warning. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the purpose of the present invention is to propose an overheating monitoring device for an electrical cabinet. Through the detection module and the filtering module, it can detect the tiny particles and characteristic gases and other products produced by fire and early thermal cracking of materials, solving the problem that the device will only alarm when a fire occurs, causing accidents. The device can detect characteristic products and issue an early warning when overheating just occurs, reminding the staff to take immediate measures to avoid thermal runaway or even fire in the electrical cabinet.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] An electrical cabinet overheating monitoring device includes a lower housing, wherein a detection module, a filter module, and a power module are installed in the lower housing, and the detection module is electrically connected to the power module; an inner partition is buckled on the lower housing, and a mainboard PCB is mounted on the inner partition, and the mainboard PCB is electrically connected to the power module. The mainboard PCB is also electrically connected to a display screen module, and the display screen module is located above the mainboard PCB; an upper housing is buckled on the lower housing, and the top of the display screen module is plugged into the upper housing;

[0009] The filter module includes a mounting cylinder, which is in the shape of a square cylinder. The bottom of the mounting cylinder is sealed and fixed on the inner bottom wall of the lower shell; a sampling air inlet is opened on one side of the mounting cylinder, and a sampling air outlet is opened on the other side, and the sampling air outlet is connected to the detection module; a filter plug-in is inserted into the mounting cylinder.

[0010] Preferably, the detection module includes a detection cavity and a fan cavity connected to the detection cavity, and a fan is installed in the fan cavity; a light source emitter is installed at one end of the detection cavity, a particle detector is installed in the middle of the detection cavity, and a PCB detection board is also installed in the detection cavity, the PCB detection board is located above the light source emitter and the particle detector, and the detection cavity upper cover is provided with a sealed cover; the particle detector and the light source emitter are both electrically connected to the PCB detection board, and the PCB detection board is electrically connected to the main board PCB; the fan cavity is provided with a sampling air inlet connector, and the sampling air inlet connector is connected to the sampling air outlet; the fan cavity is also provided with a sampling air outlet connector, and the sampling air outlet connector is connected to the air inlet of the detection cavity through a hose, and the air inlet is located on the side wall of the detection cavity between the particle detector and the light source emitter, and the detection cavity is also provided with an air outlet.

[0011] Preferably, a mounting groove is provided on the upper shell, and a mounting door is provided on the upper cover of the mounting groove; a buckle plate is provided in the mounting groove; the filter plug plate includes a filter plate, a plurality of filter holes are provided on the filter plate, and a sealing plate is provided on the top of the filter plate, and the sealing plate is buckled on the top of the mounting cylinder; two mounting fasteners are provided on the sealing plate, and the two mounting fasteners are fixed at both ends of the sealing plate, and the mounting fasteners are buckled with the buckle plates.

[0012] Preferably, a vent and an air intake threaded joint are provided on one side of the lower shell, the air intake threaded joint is connected to the sampling air inlet of the mounting cylinder through a sampling tube, and an SMA antenna is installed on the other side of the lower shell.

[0013] Preferably, a guide rail mounting groove is provided at the bottom of the lower shell, a buckle ear plate is provided on one side of the guide rail mounting groove, and a clamping block assembly is installed on the other side of the guide rail mounting groove.

[0014] Preferably, the card block assembly includes a limiting slide groove arranged at the bottom of the lower shell, the limiting slide groove is connected to the guide rail mounting groove, and a serrated buckle is provided in the middle of the limiting slide groove; a card block is slidably installed in the limiting slide groove, and a first buckle and a second buckle are provided on the card block, the first buckle limits the card block to be located in the limiting slide groove, and the card block is locked or unlocked by the buckling between the second buckle and the serrated buckle.

[0015] Preferably, a reflector is further installed in the detection cavity, and the reflector is located on a side of the particle detector away from the light source emitter.

[0016] Preferably, a fixed pressing block is provided between the light source emitter and the PCB detection board, and the light source emitter is fixed inside the detection cavity by the fixed pressing block.

[0017] Preferably, a grid light plate is further provided on the inner side wall of the detection cavity located on one side of the reflector, and the grid light plate reflects the light source of the reflector.

[0018] Preferably, a buzzer is also installed on the mainboard PCB, and the buzzer is electrically connected to the mainboard PCB.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The monitoring device of the present invention is installed on the guide rail of the equipment. The rotation of the fan causes the gas in the electric cabinet to be sucked in from the sampling air inlet of the installation cylinder, filtered through the filter plug-in plate, and finally enters the detection cavity from the sampling air outlet through the fan cavity. The laser is irradiated into the gas. If there are particles in the gas, the laser beam will be scattered by these particles. After the particle detector receives the scattered light signal, it is converted into an electrical signal by the PCB detection board, and data analysis is performed to determine the concentration and size of the particles, and finally displayed on the display module. This detection helps to monitor the solid characteristic products of overheated decomposition of the material, and the device is also provided with an air outlet channel. The gas in the detection cavity is always flowing, and can be monitored and analyzed in real time; according to the concentration and size of the particles, it can be judged whether there is overheating in the equipment. When overheating occurs, the buzzer sounds to remind the staff to deal with it in time and take corresponding monitoring and control measures, which helps to maintain the stability and safety of the equipment and realize the function of safety monitoring.

[0021] (2) The utility model connects the filter module at the air inlet of the blower cavity to filter the inhaled gas through the filter plate, which can avoid the large particles in the air from affecting the monitoring results, and prevent the dust in the gas from entering the interior of the device and affecting its use. On the other hand, the filter plug-in plate is installed by plugging. When the filter plug-in plate is covered with dust and the filtering effect is poor, it can be taken out and replaced so that the device can maintain a good filtering effect.

[0022] (3) The bottom of the lower shell of the utility model can be installed on the guide rail of the electric cabinet by setting the limiting slide groove and the card block. The installation is convenient and can be installed and removed at will, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an overheating monitoring device for an electrical cabinet according to the present invention;

[0024] Figure 2 This is a schematic diagram of the explosion structure of an overheating monitoring device for an electrical cabinet according to the utility model;

[0025] Figure 3 This is a schematic diagram of the explosion structure of the upper shell of an overheating monitoring device for an electric cabinet according to the utility model;

[0026] Figure 4 This is a schematic diagram of the top view of the filter module of an overheating monitoring device for an electrical cabinet according to the present invention;

[0027] Figure 5 This is a schematic diagram of the explosion structure of a detection module of an overheating monitoring device for an electrical cabinet according to the present invention;

[0028] Figure 6This is a schematic diagram of the explosion structure of a detection module of an overheating monitoring device for an electrical cabinet according to the present invention;

[0029] Figure 7 The utility model is a schematic diagram of the bottom structure of the lower shell of an overheating monitoring device for an electric cabinet.

[0030] In the figure: 100, lower housing; 200, detection module; 300, filter module; 400, power module; 500, inner partition; 600, mainboard PCB; 700, display module; 800, upper housing; 110, vent; 120, SMA antenna; 130, suction threaded joint; 140, guide rail mounting groove; 150, buckle ear plate; 160, clamping block assembly; 161, limiting slide groove; 162, serrated buckle member; 163, clamping block; 164, first buckle member; 165, second buckle member; 210, fan cavity ;220, detection cavity; 230, light source emitter; 240, particle detector; 250, PCB detection board; 260, reflector; 270, fixed pressure block; 280, grille light plate; 290, sealed cover; 211, fan; 212, sampling air outlet connector; 213, sampling air inlet connector; 221, air inlet; 222, air outlet; 310, installation cylinder; 320, sampling air outlet; 330, filter plug-in plate; 331, filter plate; 332, sealed plate; 333, installation fastener; 810, installation slot; 820, installation door. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example

[0033] like Figures 1 to 7 As shown, a device for monitoring overheating of an electrical cabinet includes a lower housing 100, in which a detection module 200, a filter module 300, and a power module 400 are installed. The detection module 200 is electrically connected to the power module 400. An inner partition 500 is provided on the lower housing 100, on which a mainboard PCB 600 is installed. The mainboard PCB 600 is electrically connected to the power module 400. The mainboard PCB 600 is also electrically connected to a display module 700. The display module 700 is located above the mainboard PCB 600. An upper housing 800 is provided on the lower housing 100, and the top of the display module 700 is plugged into the upper housing 800.

[0034] The detection module 200 is used to detect in real time whether there is overheating in the electrical cabinet, and performs signal processing through the mainboard PCB, converting the signal into data for display on the display screen module 700, and the power supply module 400 supplies power to the device; the cavity between the inner partition 500 and the lower shell 100 is used to install the detection module 200, the filter module 300 and the power supply module 400, and the cavity between the inner partition 500 and the upper shell 800 is used to install the mainboard PCB600 and the display screen module 700; the filter module 300 is used to filter the gas entering the detection module 200, and the display screen module 700 has a display screen plugged into the upper shell 800, and the data on the display screen can be viewed from outside the device.

[0035] The filter module 300 includes a mounting cylinder 310, which is in the shape of a square cylinder. The bottom of the mounting cylinder 310 is sealed and fixed on the inner bottom wall of the lower shell 100; a sampling air inlet is opened on one side of the mounting cylinder 310, and a sampling air outlet 320 is opened on the other side. The sampling air outlet 320 is connected to the detection module 200; a filter plug-in plate 330 is inserted in the mounting cylinder 310.

[0036] The mounting cylinder 310 is fixed on the inner bottom wall of the lower shell 100. The filter plug-in plate 330 inserted inside the mounting cylinder 310 is used to filter large particles of dust in the air. The gas enters from the sampling air inlet of the mounting cylinder 310, is filtered through the filter plug-in plate 330, and finally passes into the detection module 200 from the sampling air outlet 320 for detection.

[0037] In this embodiment, the detection module 200 includes a detection cavity 220 and a fan cavity 210 connected to the detection cavity 220, wherein a fan 211 is installed in the fan cavity 210; a light source emitter 230 is installed at one end of the detection cavity 220, a particle detector 240 is installed in the middle of the detection cavity 220, and a PCB detection board 250 is also installed in the detection cavity 220, the PCB detection board 250 is located above the light source emitter 230 and the particle detector 240, and the detection cavity 220 is covered with a sealed cover 290; the particle detector 240 and the light source emitter are connected to each other. The emitters 230 are electrically connected to the PCB detection board 250, and the PCB detection board 250 is electrically connected to the main board PCB600; the fan cavity 210 is provided with a sampling air inlet connector 213, and the sampling air inlet connector 213 is connected to the sampling air outlet 320; the fan cavity 210 is also provided with a sampling air outlet connector 212, and the sampling air outlet connector 212 is connected to the air inlet 221 of the detection cavity 220 through a hose, and the air inlet 221 is located on the side wall of the detection cavity 220 between the particle detector 240 and the light source emitter 230, and the detection cavity 220 is also provided with an air outlet 222.

[0038] As the fan 211 rotates, the gas sucked into the electrical cabinet is filtered by the filter module 300 and then enters the fan cavity 210. The gas is then sent to the detection cavity 220 through the air inlet channel. The light source emitter 230 emits a laser to irradiate the gas. If there are particles in the gas, the laser beam will be scattered by these particles. After the particle detector 240 receives the scattered light signal, it is converted into an electrical signal by the PCB detection board 250, and its intensity and pattern are analyzed. The detection effect is enhanced by the reflector to determine the concentration and size of the particles, and finally displayed on the display module 700. This detection method helps to monitor the solid characteristic products of overheated decomposition of materials. The device is also provided with an air outlet channel, and the gas in the detection cavity is always flowing, which can be monitored and analyzed in real time. Based on the concentration and size of the particles, it can be determined whether there is overheating in the electrical cabinet. When overheating occurs, the buzzer sounds to remind the staff to deal with it in time and take corresponding monitoring and control measures, which helps to maintain the stability and safety of the electrical cabinet and realize the function of safety monitoring.

[0039] In this embodiment, a mounting groove 810 is provided on the upper shell 800, and a mounting door 820 is provided on the mounting groove 810; a buckle plate is provided in the mounting groove 810; the filter plug-in plate 330 includes a filter plate 331, and a plurality of filter holes are provided on the filter plate 331. A sealing plate 332 is provided on the top of the filter plate 331, and the sealing plate 332 is buckled on the top of the mounting cylinder 310; two mounting fasteners 333 are provided on the sealing plate 332, and the two mounting fasteners 333 are fixed at both ends of the sealing plate 332, and the mounting fasteners 333 are buckled with the buckle plates.

[0040] During installation, the installation door 820 on the upper shell 800 is opened, and the filter insert 330 is installed downward from the installation groove 810. The filter plate 331 of the filter insert 330 enters the installation cylinder 310 through the hole opened on the inner partition plate 500. The sealing plate 332 is covered on the top of the installation cylinder 310 to prevent the gas entering the installation cylinder 310 from flowing out at the top of the installation cylinder 310. The installation fasteners 333 on both sides of the sealing plate 332 are buckled with the buckle plates opened in the installation groove 810 to achieve installation; when replacing, the installation door 820 is opened, and the installation fasteners 333 on both sides of the sealing plate 332 are pressed toward the middle in the installation groove 810 to release the buckle and directly take it out for replacement.

[0041] In this embodiment, a vent 110 and an air inlet threaded joint 130 are provided on one side of the lower shell 100 . The air inlet threaded joint 130 is connected to the sampling air inlet of the mounting cylinder 310 through a sampling tube. An SMA antenna 120 is installed on the other side of the lower shell 100 .

[0042] In this embodiment, a guide rail mounting groove 140 is provided at the bottom of the lower housing 100 , a buckle ear plate 150 is provided on one side of the guide rail mounting groove 140 , and a clamping block assembly 160 is installed on the other side of the guide rail mounting groove 140 .

[0043] In this embodiment, the block assembly 160 includes a limiting slide groove 161 arranged at the bottom of the lower shell 100, the limiting slide groove 161 is connected to the guide rail mounting groove 140, and a serrated buckle 162 is provided in the middle of the limiting slide groove 161; a block 163 is slidably installed in the limiting slide groove 161, and a first buckle 164 and a second buckle 165 are provided on the block 163, the first buckle 164 limits the block 163 to be located in the limiting slide groove 161, and the block 163 is locked or unlocked by the buckling between the second buckle 165 and the serrated buckle 162.

[0044] The limiting slide 161 is used to limit the range of forward movement of the card block 163. The first buckle 164 is located in the middle of the serrated buckle 162 to limit the card block 163 from sliding out of the limiting slide 161. The teeth of the second buckle 165 are engaged with the teeth outside the serrated buckle 162. When installing, buckle the ear plate 150 on the top of the guide rail, and the guide rail installation groove 140 is installed in contact with the guide rail. At this time, the second buckle 165 is engaged with the teeth of the serrated buckle 162 away from the buckle ear plate 150, and the card block 16 The locking head at the front end is located in the limiting sliding groove 161 and is in the unlocked state. When the clamping block is pushed toward the guide rail mounting groove 140, the second buckle 165 is engaged with the teeth of the serrated buckle 162 on the side close to the buckling ear plate 150. The locking head at the front end of the clamping block 163 is located in the guide rail mounting groove 140 and is clamped and installed with the guide rail. When unlocking is required, the clamping block 163 is pulled outward so that the second buckle 165 is engaged with the teeth of the serrated buckle 162 on the side away from the buckling ear plate 150 to achieve unlocking.

[0045] In this embodiment, a reflector 260 is further installed in the detection cavity 220 . The reflector 260 is located on a side of the particle detector 240 away from the light source emitter 230 .

[0046] The reflector 260 reflects the scattered light back to the particle detector 240, which can enhance the intensity of the light signal and improve the sensitivity and accuracy of particle detection. The reflector 260 helps collect more scattered light, thereby more accurately measuring the particle concentration in the air.

[0047] In this embodiment, a fixed pressing block 270 is provided between the light source emitter 230 and the PCB detection board 250 , and the light source emitter 230 is fixed inside the detection cavity 220 by the fixed pressing block 270 .

[0048] In this embodiment, a grid light plate 280 is further provided on the inner side wall of the detection cavity 220 located on one side of the reflector 260 . The grid light plate 280 reflects the light source of the reflector 260 .

[0049] In this embodiment, a buzzer is further installed on the mainboard PCB 600 , and the buzzer is electrically connected to the mainboard PCB 600 .

[0050] When the concentration and size of the particles reach dangerous values, the buzzer will sound to remind the staff to deal with it in time, avoiding thermal runaway accidents and realizing the function of safety monitoring.

[0051] The working principle of the overheat monitoring device for distribution cabinet in the utility model is as follows:

[0052] During operation, the rotation of the fan 211 causes the gas in the electrical cabinet to be drawn in through the sampling air inlet of the mounting cylinder 310, filtered through the filter insert 330, and finally enter the detection chamber 220 through the sampling air outlet 320, the fan chamber 210, and the detection chamber 220. The light source emitter 230 emits a laser to irradiate the gas. If there are particles in the gas, the laser beam will be scattered by these particles. After the particle detector 240 receives the scattered light signal, it is converted into an electrical signal by the PCB detection board 250. Data analysis is performed to determine the concentration and size of the particles, and finally displayed on the display module 700. This detection method helps to monitor the solid characteristic products of material overheating decomposition. The device also has an air outlet channel, and the gas in the detection chamber is constantly flowing, which can be monitored and analyzed in real time. Based on the concentration and size of the particles, it can be determined whether there is overheating in the electrical cabinet. When overheating occurs, the buzzer sounds to remind the staff to take timely measures and take appropriate monitoring and control measures, which helps to maintain the stability and safety of the electrical cabinet and realize the safety monitoring function.

[0053] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An overheat monitoring device for an electrical cabinet, comprising a lower housing (100), characterized in that: The lower housing (100) is provided with a detection module (200), a filter module (300) and a power module (400), and the detection module (200) is electrically connected to the power module (400); the lower housing (100) is provided with an inner partition (500), a mainboard PCB (600) is provided on the inner partition (500), the mainboard PCB (600) is electrically connected to the power module (400), and the mainboard PCB (600) is also electrically connected to a display screen module (700), and the display screen module (700) is located above the mainboard PCB (600); the lower housing (100) is provided with an upper housing (800), and the top of the display screen module (700) is plugged into the upper housing (800); The filter module (300) comprises a mounting cylinder (310), the mounting cylinder (310) being in the shape of a square cylinder, the bottom of the mounting cylinder (310) being sealed and fixed on the inner bottom wall of the lower shell (100); a sampling air inlet is provided on one side of the mounting cylinder (310), and a sampling air outlet (320) is provided on the other side, the sampling air outlet (320) being connected to the detection module (200); and a filter insert (330) is inserted into the mounting cylinder (310).

2. The overheat monitoring device for an electrical cabinet according to claim 1, characterized in that: The detection module (200) comprises a detection cavity (220) and a fan cavity (210) connected to the detection cavity (220), wherein a fan (211) is installed in the fan cavity (210); a light source emitter (230) is installed at one end of the detection cavity (220), a particle detector (240) is installed in the middle of the detection cavity (220), a PCB detection board (250) is also installed in the detection cavity (220), the PCB detection board (250) is located above the light source emitter (230) and the particle detector (240), and a sealing cover (290) is provided on the upper cover of the detection cavity (220); the particle detector (240) and the light source emitter (230) are connected to each other. 30) are electrically connected to the PCB detection board (250), and the PCB detection board (250) is electrically connected to the main board PCB (600); the fan cavity (210) is provided with a sampling air inlet connector (213), and the sampling air inlet connector (213) is communicated with the sampling air outlet (320); the fan cavity (210) is also provided with a sampling air outlet connector (212), and the sampling air outlet connector (212) is communicated with the air inlet (221) of the detection cavity (220) through a hose, and the air inlet (221) is located on the side wall of the detection cavity (220) between the particle detector (240) and the light source emitter (230), and the detection cavity (220) is also provided with an air outlet (222).

3. The overheat monitoring device for an electrical cabinet according to claim 1, characterized in that: The upper shell (800) is provided with a mounting groove (810), and the mounting groove (810) is covered with a mounting door (820); a buckle plate is provided in the mounting groove (810); the filter plug plate (330) includes a filter plate (331), and the filter plate (331) is provided with a plurality of filter holes, and a sealing plate (332) is provided on the top of the filter plate (331), and the sealing plate (332) is buckled on the top of the mounting cylinder (310); two mounting fasteners (333) are provided on the sealing plate (332), and the two mounting fasteners (333) are fixed at two ends of the sealing plate (332), and the mounting fasteners (333) are buckled with the buckle plate.

4. The overheat monitoring device for an electrical cabinet according to claim 1, characterized in that: A vent (110) and an air inlet threaded joint (130) are provided on one side of the lower housing (100); the air inlet threaded joint (130) is connected to a sampling air inlet of the mounting cylinder (310) via a sampling tube; and an SMA antenna (120) is installed on the other side of the lower housing (100).

5. The overheat monitoring device for an electrical cabinet according to claim 1, characterized in that: A guide rail installation slot (140) is provided at the bottom of the lower housing (100), a buckle ear plate (150) is provided on one side of the guide rail installation slot (140), and a clamping block assembly (160) is installed on the other side of the guide rail installation slot (140).

6. The overheat monitoring device for an electrical cabinet according to claim 5, characterized in that: The block assembly (160) includes a limiting slide groove (161) arranged at the bottom of the lower shell (100), the limiting slide groove (161) is communicated with the guide rail installation groove (140), and a sawtooth buckle (162) is provided in the middle of the limiting slide groove (161); a block (163) is slidably installed in the limiting slide groove (161), and a first buckle (164) and a second buckle (165) are provided on the block (163), the first buckle (164) limits the block (163 to be located in the limiting slide groove (161), and the block (163) is locked or unlocked by the buckling between the second buckle (165) and the sawtooth buckle (162).

7. The overheat monitoring device for an electrical cabinet according to claim 2, characterized in that: A reflector (260) is also installed in the detection cavity (220), and the reflector (260) is located on a side of the particle detector (240) away from the light source emitter (230).

8. The overheat monitoring device for an electrical cabinet according to claim 2, characterized in that: A fixed pressing block (270) is provided between the light source emitter (230) and the PCB detection board (250), and the light source emitter (230) is fixed inside the detection cavity (220) via the fixed pressing block (270).

9. The overheat monitoring device for an electrical cabinet according to claim 8, characterized in that: A grid light plate (280) is further provided on the inner side wall of the detection cavity (220) located on one side of the reflective plate (260), and the grid light plate (280) reflects the light source of the reflective plate (260).

10. The overheat monitoring device for an electrical cabinet according to claim 1, characterized in that: A buzzer is also installed on the mainboard PCB (600), and the buzzer is electrically connected to the mainboard PCB (600).

Images