Intrusive internal temperature measuring device of electrical equipment

Abstract

The invention provides an intrusive internal temperature measuring device for electrical equipment, which comprises an electrical equipment room for mounting the electrical equipment, a temperature measuring room arranged at the top of the electrical equipment room, a temperature measuring hole arranged on the room wall of the electrical equipment room connected with the temperature measuring room, a telescopic temperature measuring rod arranged in the temperature measuring room, and a temperature sensor arranged at the bottom end of the temperature measuring rod, when the temperature measuring rod extends, the temperature sensor extends into the electrical equipment chamber through the temperature measuring hole, when the temperature measuring rod contracts, the temperature sensor leaves the electrical equipment chamber and returns to the temperature measuring chamber, and a movable plugging disc is arranged in the temperature measuring chamber and can plug or open the temperature measuring hole. The device can measure the temperature of the electrical equipment room in real time, can avoid continuous influence of high temperature, and is beneficial to reducing the damage probability and prolonging the service life.

Description

Technical Field

[0001] The invention relates to the technical field of temperature measurement, and in particular to an invasive internal temperature measurement device for electrical equipment. Background Art

[0002] With the continuous development of science and technology, the modern power industry is also developing towards large capacity and high voltage, and at the same time, the safe operation requirements of the power system are getting higher and higher. Electrical equipment failures can cause power outages, production stoppages, and even fires, which can cause economic losses and adverse effects. According to the failure conditions and operating characteristics of electrical equipment, taking corresponding preventive measures can reduce the occurrence of accidents to a certain extent and reduce losses. The corresponding preventive measures mainly monitor the operation of electrical equipment in real time and take corresponding protective measures.

[0003] Temperature is an important reference for diagnosing the operating status of electrical equipment. Monitoring the operating temperature of the operating equipment and the temperature of important parts can timely detect abnormal phenomena. There are many high-voltage and high-current electrical equipment in the power system. These equipment often have excessive temperature rise during operation. If it is not eliminated in time, the performance of the insulation components will be reduced, and even breakdown will occur, causing accidents and major economic losses. High-voltage and high-current electrical equipment in normal working conditions already belongs to a high-temperature working environment. General temperature sensing equipment cannot work in a high-temperature environment for a long time, otherwise the temperature sensing equipment will be damaged or the measurement accuracy will be inaccurate. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention proposes an invasive internal temperature measurement device for electrical equipment, which can measure the temperature of the electrical equipment room in real time and avoid being continuously affected by high temperature, thereby helping to reduce the probability of damage and extend the service life.

[0005] To achieve the above-mentioned purpose, the present invention provides an invasive internal temperature measuring device for electrical equipment, including an electrical equipment room for installing the electrical equipment, a measuring chamber is provided on the top of the electrical equipment room, a temperature measuring hole is provided on the wall connecting the electrical equipment room and the measuring chamber, a retractable temperature measuring rod is provided in the measuring chamber, a temperature sensor is provided at the bottom end of the temperature measuring rod, when the temperature measuring rod is extended, the temperature sensor extends into the electrical equipment room through the temperature measuring hole, when the temperature measuring rod is retracted, the temperature sensor leaves the electrical equipment room and returns to the measuring chamber, a movable sealing disk is provided in the measuring chamber, and the sealing disk can seal or open the temperature measuring hole.

[0006] Furthermore, a motor is provided on the inner wall at the top of the measuring chamber, and the output shaft of the motor is arranged vertically downward. A coaxial shaft is connected to the output shaft of the motor, and a gear plate is provided at the end of the shaft away from the motor. Upper gear teeth and lower gear teeth are provided on the outer periphery of the gear plate, and the upper gear teeth are arranged on the side of the gear plate close to the motor. There are several upper gear teeth and they are evenly distributed along the circumference of the gear plate. The lower gear teeth are arranged on the side of the gear plate away from the motor, and the number of lower gear teeth is 1.

[0007] Furthermore, a pin shaft is arranged in the measuring room, the bottom of the pin shaft is rotatably connected to the outer wall of the top of the electrical room, the pin shaft can rotate around its own axis, a first gear plate is arranged on the top of the pin shaft, the teeth of the first gear plate are engaged with the lower gear teeth, and a sealing plate is arranged at the bottom of the pin shaft. The sealing plate is a disc-shaped structure, and the sealing plate is eccentrically arranged relative to the pin shaft.

[0008] Furthermore, a rotating rod extending vertically downward is provided on the inner wall at the top of the measuring chamber, a second toothed disc is provided at the bottom of the rotating rod, the teeth of the second toothed disc are meshed with the teeth of the upper wheel, the temperature measuring rod is arranged below the second toothed disc, the temperature measuring rod includes a telescopic joint, the telescopic joint includes a plurality of sleeves which are sequentially sleeved, a threaded rod is fixed below the telescopic joint, a temperature sensor is arranged at the bottom of the threaded rod, a threaded block is provided on the inner wall of the side of the measuring chamber, a threaded hole extending in the vertical direction is provided on the threaded block, an external thread is provided on the outside of the threaded rod, and the threaded rod is threadedly connected in the threaded hole.

[0009] Through the above technical solution, the temperature emitted by the electrical equipment during operation causes high temperature to be generated inside the electrical equipment room. When the electrical equipment is in operation, the motor runs, driving the shaft to rotate, and the shaft drives the gear plate to rotate. A circle of upper gear teeth above the gear plate drives the second gear plate to rotate as a whole for multiple circles, and a lower gear tooth below the gear plate drives the first gear plate to rotate continuously in a small amplitude. The first gear plate drives the blocking plate to rotate through the pin shaft to open the temperature measuring hole. At the same time, the second gear plate drives the threaded rod to move in the threaded hole of the threaded block through the telescopic joint, and pulls the telescopic joint to extend. The threaded rod drives the temperature sensor to move and penetrate into the electrical equipment room through the temperature measuring hole to measure the temperature of the electrical equipment in real time. The method of initially cooling down and then detecting the temperature can effectively reduce the damage of high temperature to the temperature sensor. The temperature sensor detects the temperature in the electrical equipment room after the initial heat dissipation, which does not affect the temperature detection of the temperature sensor. After the measurement is completed, the motor is reset, so that the blocking disk blocks the through hole again, and the temperature sensor retracts into the measuring room again, which can not only measure the temperature, but also prevent the high temperature generated by the electrical equipment from continuously acting on the temperature sensor, causing the internal circuit of the temperature sensor to be damaged due to the influence of continuous high temperature, thereby extending the service life of the temperature sensor. At the same time, through the cooperation of the first toothed disk and the second toothed disk with the gear disk, the opening speed of the blocking disk is proportional to the speed at which the temperature sensor enters the electrical equipment room, the blocking disk will not open too quickly, and the temperature sensor will not move too quickly, so as to avoid the temperature sensor from hitting the blocking disk.

[0010] Further, a push-pull plate is slidably connected inside the electrical equipment room. The push-pull plate is parallel to the side wall of the electrical equipment room. The inner wall of the side of the electrical equipment room close to the push-pull plate is connected to the push-pull plate through a spring. An exhaust pipe is provided at the bottom of the side of the electrical equipment room far from the push-pull plate.

[0011] Further, a push-pull rod is provided on the side of the push-pull plate close to the spring. The projection of the push-pull rod is in a "C" shape. A top groove is opened at the top of the electrical equipment room. The length direction of the top groove is perpendicular to the plane where the push-pull plate is located. A through hole is provided on the side of the temperature measuring chamber. The middle part of the push-pull rod passes through the top groove and extends upward. The top of the push-pull rod passes through the through hole and extends in the temperature measuring chamber. A spherical magnetic ball is connected to the top end of the push-pull rod. A spherical electromagnetic block is provided on the side of the shaft rod close to the magnetic ball. The electromagnetic block is electrically connected to an external power supply. The electromagnetic block and the magnetic ball are at the same height in the horizontal direction. The magnetic pole of the magnetic ball is the same as that of the electromagnetic block.

[0012] Through the above technical solution, when the shaft rod rotates, it drives the electromagnetic block to rotate around the axis of the shaft rod until it interacts with the magnetic ball at the upper end of the push-pull rod. The push-pull rod is stressed and drives the push-pull plate to slide along the inner wall of the electrical equipment room. The spring is stressed and deformed. Then the electromagnetic block rotates until it disengages from the push-pull rod, and the spring generates a reaction force to reset the push-pull plate, thereby continuously exhausting the high-temperature gas in the electrical equipment room through the exhaust pipe for efficient heat dissipation, improving the protection effect on the electrical equipment, and automatically dissipating heat while measuring the temperature, with automated operation and greatly improved efficiency.

[0013] Further, an inertia block is provided on the side of the rotating rod. The inertia block is of a hollow structure. The inner wall of the side of the inertia block far from the rotating rod is connected to a slider through a spring. A pressing block is provided on the side of the slider背离 the spring. An induction block is provided at the bottom of the inner wall of the side of the inertia block far from the rotating rod. A slidable sphere is provided in the cavity between the slider and the rotating rod inside the inertia block.

[0014] Further, a temperature sensing module and a speed control module are provided inside the temperature sensor. The temperature sensing module is electrically connected to the speed control module. The temperature sensing module is used to sense the temperature dissipated by the electrical equipment. The speed control module is electrically connected to the motor. The speed control module is used to control the speed of the motor when it resets according to the temperature dissipated by the electrical equipment. An current control module is provided inside the induction block. The current control module is electrically connected to the electromagnetic block. The current control module is used to sense the contact between the slider and the induction block and control the current magnitude of the electromagnetic block.

[0015] Through the above technical solution, when the temperature in the electrical equipment room is high, a value can be preset. When the temperature is higher than the value, the motor reset speed is accelerated, and the higher the temperature, the faster the motor reset speed, thereby accelerating the speed at which the temperature sensor retracts into the measuring chamber and the speed at which the sealing plate blocks the temperature measuring hole, fully shortening the heating time of the temperature sensor, thereby further protecting the temperature sensor and extending the service life of the equipment. In addition, quickly blocking the temperature measuring hole can prevent high-temperature gas from continuously entering the measuring chamber and causing structural damage. The faster the reset speed, the higher the heat dissipation efficiency. When the electromagnetic block rotates around the center of the shaft, when the electromagnetic block is close to the upper end of the push-pull rod, the current acts on the electromagnetic block, causing it to generate magnetic force, and the magnetic force acts on the magnetic ball, causing it to be subjected to magnetic repulsion and move farther to the far side. The lateral displacement distance of the push-pull plate is increased, further enhancing the heat dissipation efficiency. When the reset speed reaches a certain level, the sphere inside the inertia block is affected by inertia to exert force on the pressing block outward. The inertia is greater than the elasticity of the spring, thereby pushing the slider to move and contact the induction block, increasing the magnetic force of the electromagnetic block, thereby further enhancing the heat dissipation. The heat dissipation speed is fast, and the protection of electrical equipment is more comprehensive.

[0016] The intrusive internal temperature measuring device of an electrical device of the present invention has the following beneficial effects:

[0017] 1. The temperature sensor measures the real-time temperature of the electrical equipment room in an invasive manner and stays outside the electrical equipment room when not working. It can not only measure the temperature in real time, but also avoid the continuous influence of high temperature, reduce the probability of damage and extend the service life.

[0018] 2. During measurement, the opening speed of the sealing disk is proportional to the speed at which the temperature sensor penetrates into the electrical equipment room, and they operate synchronously to prevent the temperature sensor from hitting the sealing disk.

[0019] 3. During measurement, the high-temperature gas in the electrical equipment room is continuously discharged through the exhaust pipe to dissipate heat efficiently, thereby improving the protection effect of the electrical equipment. The heat dissipation action and temperature measurement are automatically performed simultaneously, which greatly improves the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described and explained below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of an invasive internal temperature measuring device of an electrical device according to a preferred embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional view of the temperature sensor located in the measuring chamber.

[0023] Figure 3 This is an oblique cross-sectional view of the temperature sensor in the measuring chamber.

[0024] Figure 4 It is a partial cross-sectional view of the temperature sensor located inside the electrical equipment room.

[0025] Figure 5 It is a schematic diagram used to reflect the structure inside the measuring room.

[0026] Figure 6 It is a structural diagram used to reflect the connection relationship between the shaft rod and the electromagnet.

[0027] Figure 7 It is a structural diagram used to reflect the push-pull plate.

[0028] Figure 8 It is a structural diagram used to reflect the inertia block.

[0029] Fig. 9 yes Figure 8 Enlarged view of point A in the middle.

[0030] Figure numerals: 1. Electrical equipment room; 111. Push-pull plate; 112. Push-pull rod; 2. Measuring room; 21. Motor; 22. Shaft; 221. Electromagnet; 23. Gear plate; 231. Upper gear; 232. Lower gear; 24. Sealing plate; 25. Pin; 26. First gear plate; 27. Rotating rod; 271. Second gear plate; 272. Telescopic joint; 273. Threaded rod; 274. Temperature sensor; 275. Inertia block; 276. Slider; 277. Pressing block; 278. Induction block; 279. Sphere; 28. Threaded block; 3. Temperature measuring hole; 4. Exhaust pipe. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be more clearly and completely explained below through the description of the preferred embodiments of the present invention in combination with the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, an invasive internal temperature measuring device for electrical equipment in a preferred embodiment of the present invention comprises an electrical equipment room 1 for installing the electrical equipment, a measuring chamber 2 is provided on the top of the electrical equipment room 1, and a temperature measuring hole 3 is provided on the wall connecting the electrical equipment room 1 and the measuring chamber 2.

[0033] like Figure 2 and Figure 5As shown, a motor 21 is provided on the inner wall of the top of the measuring room 2. The motor 21 is a stepper motor 21. The output shaft of the motor 21 is arranged vertically downward. A coaxial shaft 22 is connected to the output shaft of the motor 21. A gear plate 23 is provided at one end of the shaft 22 away from the motor 21. An upper gear tooth 231 and a lower gear tooth 232 are provided on the outer periphery of the gear plate 23. The upper gear tooth 231 is provided on the side of the gear plate 23 close to the motor 21. A plurality of upper gear teeth 231 are provided and are evenly distributed along the circumference of the gear plate 23. The lower gear tooth 232 is provided on the side of the gear plate 23 away from the motor 21. The number of the lower gear teeth 232 is one.

[0034] like Figure 2 , Figure 3 and Figure 5 As shown, a pin 25 is provided in the temperature measuring chamber 2, and the bottom of the pin 25 is rotatably connected to the outer wall of the top of the electrical chamber, and the pin 25 can rotate around its own axis. A first toothed disc 26 is provided at the top of the pin 25, and the teeth of the first toothed disc 26 are meshed with the lower gear teeth 232. A blocking disc 24 is provided at the bottom of the pin 25, and the blocking disc 24 is a disc-shaped structure, and the blocking disc 24 is eccentrically arranged relative to the pin 25. As the pin 25 rotates, the blocking disc 24 can block or open the temperature measuring hole 3.

[0035] like Figure 2 , Figure 3 and Figure 5 As shown, a rotating rod 27 extending vertically downward is provided on the inner wall of the top of the measuring room 2, and a second toothed disc 271 is provided at the bottom of the rotating rod 27. The teeth of the second toothed disc 271 mesh with the upper gear teeth 231, and a temperature measuring rod is provided below the second toothed disc 271. The temperature measuring rod includes a telescopic joint 272, and the telescopic joint 272 includes a plurality of sleeves that are sequentially sleeved. A threaded rod 273 is fixed below the telescopic joint 272, and a threaded block 28 is provided on the inner wall of the side of the measuring room 2. The threaded block 28 is provided with a threaded hole extending in the vertical direction, and an external thread is provided on the outside of the threaded rod 273, and the threaded rod 273 is threadedly connected in the threaded hole. When the motor 21 drives the threaded rod 273 to rotate, the telescopic joint 272 can be extended or contracted.

[0036] like Figure 2 As shown, a temperature sensor 274 is provided at the bottom of the threaded rod 273, and the projection of the temperature sensor 274 on the horizontal plane falls into the temperature measuring hole 3. A temperature sensing module and a speed control module are provided in the temperature sensor 274, and the temperature sensing module is electrically connected to the speed control module. The temperature sensing module is used to sense the temperature emitted by the electrical equipment, and the speed control module is electrically connected to the motor 21. The speed control module is used to control the speed of the motor 21 when it is reset according to the temperature emitted by the electrical equipment. The temperature sensing module and the speed control module adopt mature modules already available in the prior art.

[0037] like Figure 3 and Figure 4As shown, when the motor 21 rotates forward, the telescopic joint 272 extends, the plugging disc 24 rotates to open the temperature measurement hole 3, and the temperature sensor 274 extends into the electrical equipment room 1 through the temperature measurement hole 3. When the motor 21 resets, the telescopic joint 272 contracts, the temperature sensor 274 leaves the electrical equipment room 1 and returns to the temperature measurement room 2, and the plugging disc 24 rotates to plug the temperature measurement hole 3. The rotation speed of the motor 21 is controlled by the rotation speed control module. When the temperature is high, the rotation speed of the motor 21 is fast, which can quickly measure the temperature, reduce the residence time of the temperature sensor 274 in the high-temperature electrical equipment room 1, extend the service life, and reduce the possibility of damage.

[0038] As Figure 3 , Figure 6 and Figure 7 As shown in FIGS., a push-pull plate 111 is slidably connected in the electrical equipment room 1. The push-pull plate 111 is parallel to the side wall of the electrical equipment room 1. The inner wall of the side of the electrical equipment room 1 close to the push-pull plate 111 is connected to the push-pull plate 111 through a spring. An exhaust pipe 4 is provided at the bottom of the side of the electrical equipment room 1 away from the push-pull plate 111. A push-pull rod 112 is provided on the side of the push-pull plate 111 close to the spring. The projection of the push-pull rod 112 is in a "C" shape. A top groove is opened at the top of the electrical equipment room 1. The length direction of the top groove is perpendicular to the plane where the push-pull plate 111 is located. A through hole is provided on the side of the temperature measurement room 2. The middle part of the push-pull rod 112 passes through the top groove and extends upward. The top of the push-pull rod 112 passes through the through hole and extends in the temperature measurement room 2. A spherical magnetic ball is connected to the top end of the push-pull rod 112. A spherical electromagnetic block is provided on the side of the shaft rod 22 close to the magnetic ball. The electromagnetic block is electrically connected to an external power supply. The electromagnetic block and the magnetic ball are at the same height in the horizontal direction, and the magnetic pole of the magnetic ball is the same as that of the electromagnetic block. When the electromagnetic block approaches the magnetic ball, it exerts a force on it, causing the push-pull rod 112 to push the push-pull plate 111 to compress the spring. When the electromagnetic block moves away from the magnetic ball, the spring returns to push the push-pull plate 111 to reset. When the shaft rod 22 rotates, the electromagnetic block makes a circular motion, causing the push-pull plate 111 to continuously make a reciprocating motion, thereby discharging the high-temperature gas in the electrical equipment room 1 through the exhaust pipe 4.

[0039] As Figure 5 , Figure 8 and Fig. 9As shown, an inertia block 275 is provided on the side of the rotating rod 27, and the inertia block 275 is a hollow structure. The inner wall of the inertia block 275 away from the rotating rod 27 is connected to a slider 276 through a spring, and a pressing block 277 is provided on the side of the slider 276 away from the spring. A sensing block 278 is provided at the bottom of the inner wall of the inertia block 275 away from the rotating rod 27, and a slidable ball 279 is provided in the cavity between the slider 276 and the rotating rod 27 in the inertia block 275. A current control module is provided in the sensing block 278, and the current control module is electrically connected to the electromagnetic block. The current control module is used to sense the contact between the slider 276 and the sensing block 278 and control the current size of the electromagnetic block. The current control module adopts a mature module in the prior art. When the rotating rod 27 rotates, the inertia causes the ball 279 to slide toward the pressing block 277. When the rotation speed is faster, the ball 279 applies force to the pressing block 277 and the slider 276, overcoming the spring force to make the slider 276 contact the sensing block 278, thereby increasing the magnetic force of the electromagnetic block, further accelerating the rotation speed of the rotating rod 27, and increasing the reciprocating motion speed and amplitude of the push-pull plate 111. The faster the reset speed, the higher the heat dissipation efficiency, thereby enhancing the heat dissipation effect.

[0040] The invasive internal temperature measuring device of an electrical device of the present invention can automatically dissipate heat while measuring temperature, operate automatically, greatly improve efficiency, protect temperature sensors, and increase the service life of equipment. Quickly blocking the through hole can prevent high-temperature gas from continuously entering the measuring room and causing structural damage.

[0041] The above specific implementations are only descriptions of the preferred implementations of the present invention, and do not limit the protection scope of the present invention. Without departing from the design concept and spirit of the present invention, various modifications, substitutions and improvements made by ordinary technicians in this field to the technical solution of the present invention based on the text description and drawings provided by the present invention should all fall within the protection scope of the present invention. The protection scope of the present invention is determined by the claims.

Claims

1. An invasive internal temperature measuring device for electrical equipment, characterized in that: The invention comprises an electrical equipment room (1) for installing electrical equipment, wherein a measuring chamber (2) is provided on the top of the electrical equipment room (1), a temperature measuring hole (3) is provided on the wall connecting the electrical equipment room (1) and the measuring chamber (2), a retractable temperature measuring rod is provided in the measuring chamber (2), a temperature sensor (274) is provided at the bottom end of the temperature measuring rod, when the temperature measuring rod is extended, the temperature sensor (274) extends into the electrical equipment room (1) through the temperature measuring hole (3), when the temperature measuring rod is retracted, the temperature sensor (274) leaves the electrical equipment room (1) and returns to the measuring chamber (2), and a movable blocking disk (24) is provided in the measuring chamber (2), and the blocking disk (24) can block or open the temperature measuring hole (3).

2. The invasive internal temperature measuring device of an electrical device according to claim 1, characterized in that: A motor (21) is provided on the inner wall of the top of the measuring room (2); an output shaft of the motor (21) is arranged vertically downward; a coaxial shaft (22) is connected to the output shaft of the motor (21); a gear plate (23) is provided at one end of the shaft (22) away from the motor (21); an upper gear tooth (231) and a lower gear tooth (232) are provided on the outer periphery of the gear plate (23); the upper gear tooth (231) is arranged on a side of the gear plate (23) close to the motor (21); a plurality of the upper gear teeth (231) are arranged and are evenly spaced along the circumference of the gear plate (23); the lower gear tooth (232) is arranged on a side of the gear plate (23) away from the motor (21); and the number of the lower gear teeth (232) is one.

3. The device for measuring the internal temperature of an electrical device according to claim 2, characterized in that: A pin shaft (25) is arranged in the measuring room (2), the bottom of the pin shaft (25) is rotatably connected to the outer wall of the top of the electrical room, the pin shaft (25) can rotate around its own axis, a first toothed disc (26) is arranged on the top of the pin shaft (25), the teeth of the first toothed disc (26) are meshed with the lower gear teeth (232), the blocking disc (24) is arranged at the bottom of the pin shaft (25), the blocking disc (24) is a disc-shaped structure, and the blocking disc (24) is eccentrically arranged relative to the pin shaft (25).

4. The invasive internal temperature measuring device of an electrical device according to claim 3, characterized in that: The top inner wall of the measuring chamber (2) is provided with a rotating rod (27) extending vertically downward, the bottom of the rotating rod (27) is provided with a second toothed disc (271), the teeth of the second toothed disc (271) are meshed with the upper gear teeth (231), the temperature measuring rod is arranged below the second toothed disc (271), the temperature measuring rod comprises a telescopic joint (272), the telescopic joint (272) comprises a plurality of sleeves which are sleeved in sequence, a threaded rod (273) is fixed below the telescopic joint (272), the temperature sensor (274) is arranged at the bottom of the threaded rod (273), a threaded block (28) is provided on the inner wall of the side of the measuring chamber (2), the threaded block (28) is provided with a threaded hole extending in the vertical direction, the outside of the threaded rod (273) is provided with an external thread, and the threaded rod (273) is threadedly connected in the threaded hole.

5. The device for measuring the internal temperature of an electrical device according to claim 4, characterized in that: A push-pull plate (111) is slidably connected in the electrical equipment room (1). The push-pull plate (111) is parallel to the side wall of the electrical equipment room (1). The inner wall of the side of the electrical equipment room (1) close to the push-pull plate (111) is connected to the push-pull plate (111) through a spring. An exhaust pipe (4) is provided at the bottom of the side of the electrical equipment room (1) away from the push-pull plate (111).

6. The device for measuring the internal temperature of an electrical device according to claim 5, characterized in that: A push-pull rod (112) is provided on the side of the push-pull plate (111) close to the spring. The projection of the push-pull rod (112) is in the shape of "匚". A top groove is opened at the top of the electrical equipment room (1). The length direction of the top groove is perpendicular to the plane where the push-pull plate (111) is located. A through hole is provided on the side of the temperature measuring room (2). The middle part of the push-pull rod (112) passes through the top groove and extends upward. The top of the push-pull rod (112) passes through the through hole and extends in the temperature measuring room (2). A spherical magnetic ball is connected to the top end of the push-pull rod (112). A spherical electromagnetic block is provided on the side of the shaft rod (22) close to the magnetic ball. The electromagnetic block is electrically connected to an external power supply. The electromagnetic block and the magnetic ball are at the same height in the horizontal direction. The magnetic pole of the magnetic ball is the same as that of the electromagnetic block.

7. The device for measuring the internal temperature of an electrical device according to claim 6, characterized in that: An inertia block (275) is provided on the side of the rotating rod (27). The inertia block (275) is of a hollow structure. The inner wall of the side of the inertia block (275) away from the rotating rod (27) is connected to a slider (276) through a spring. A pressing block (277) is provided on the side of the slider (276)背离 spring. An induction block (278) is provided at the bottom of the inner wall of the side of the inertia block (275) away from the rotating rod (27). A slidable sphere (279) is provided in the cavity of the inertia block (275) between the slider (276) and the rotating rod (27).

8. The device for measuring the internal temperature of an electrical device according to claim 7, characterized in that: A temperature sensing module and a speed control module are provided in the temperature sensor (274). The temperature sensing module is electrically connected to the speed control module. The temperature sensing module is used to sense the temperature emitted by the electrical equipment. The speed control module is electrically connected to the motor (21). The speed control module is used to control the speed of the motor (21) when it resets according to the temperature emitted by the electrical equipment. A current control module is provided in the induction block (278). The current control module is electrically connected to the electromagnetic block. The current control module is used to sense the contact between the slider (276) and the induction block (278) and control the magnitude of the current of the electromagnetic block.

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