High-voltage switch cabinet partial discharge monitoring device

Abstract

The utility model discloses a high voltage switch cabinet partial discharge monitoring device, comprising a walking device and a discharge detection sensor arranged on the walking device, the walking device comprises a support, a plurality of attraction fixing mechanisms, a plurality of rolling support mechanisms and a walking driving mechanism, an attraction fixing mechanism and a rolling supporting mechanism are arranged at the bottom of the support, a walking driving mechanism is arranged on the support, and compared with the prior art, the risk that operators fall down can be avoided, the detection efficiency is improved, the size is small, adaptability is high, and popularization is facilitated.

Description

Technical field

[0001] The utility model relates to the technical field of partial discharge monitoring, in particular to a partial discharge monitoring device for a high-voltage switch cabinet. [Background Technology]

[0002] In operating electrical equipment, when an electric field acts on a device, discharge occurs only in certain areas, without penetrating the voltage-applied conductors, meaning no breakdown occurs. This phenomenon is called partial discharge. Partial discharge is caused by localized electric field distortion and concentrated field strength, leading to gas discharge or breakdown within a localized area of ​​the insulating medium. Partial discharge can pose a serious threat to the insulation of electrical equipment, primarily through damage to the insulating material caused by localized heating, charged particle impacts, chemically active products, and radiation. Partial discharge is a pulsed discharge that produces a series of physical phenomena and chemical changes, including light, sound, electrical, and mechanical vibrations, within and around the electrical equipment. These various physical and chemical changes associated with partial discharge can provide detection signals for monitoring the insulation condition within the electrical equipment.

[0003] The application (patent) number is CN202220829487.4, which describes a switchgear partial discharge monitoring system. The system primarily includes an ultrasonic sensor, an amplifier circuit, an oscilloscope, and a fixture. The fixture includes an amplifier circuit mounting box, an L-shaped bracket, a magnet, and a fixing card. The left end of the L-shaped bracket's horizontal bar is provided with a magnet mounting hole, into which the magnet is fixedly mounted. The amplifier circuit mounting box is provided with inlet and outlet holes. The bottom surface of the amplifier circuit mounting box is fixed to the upper end of the L-shaped bracket's vertical bar, and the lower end of the fixing card is fixed to the top surface of the amplifier circuit mounting box. The ultrasonic sensor is mounted on the fixing card, and the amplifier circuit is mounted within the amplifier circuit mounting box. The output of the ultrasonic sensor is connected to the input of the amplifier circuit via a first data line, and the output of the amplifier circuit is connected to the input of the oscilloscope via a second data line. The system has a simple structure and is easy to use. The left end of the crossbar of the L-shaped bracket of the discharge monitoring system is equipped with a magnet mounting hole. The magnet is fixed in the magnet mounting hole (the magnet attracts the fixture to the switch cabinet during use). When the detection point needs to be replaced, manual operation is required. There are obvious shortcomings during testing: when the test point is relatively high, the tester needs to use an insulating ladder. Working at high altitude not only increases the work risk but also reduces detection efficiency.

[0004] Application (patent) number CN201820463561.9 describes a robot for detecting partial discharges in indoor switchgear cabinets in substations. The device comprises a mobile platform, a multi-jointed robotic arm, an industrial camera, an ultrasonic detection sensor, a field control cabinet, and a remote monitoring host. The mobile platform is mounted on a base with a multi-jointed robotic arm. A partial discharge detection module is mounted on the other end of the multi-jointed robotic arm via a second joint mechanism. The partial discharge detection module includes an industrial camera and an ultrasonic detection sensor. The field control cabinet houses an embedded processor, a main controller, and a second network switch. The first joint mechanism is connected to the main controller, which controls the movement of the multi-jointed robotic arm. The industrial camera and ultrasonic detection sensor are connected to the embedded processor and transmit discharge information to it. While this technical solution solves the problem of the high height of the switchgear cabinet, which requires manual inspection of each point before moving to the next, resulting in a high workload, its large size, limited detection range, and high cost make it difficult to commercialize. [Utility Model Content]

[0005] The purpose of the utility model is to solve the problems in the prior art and propose a partial discharge monitoring device for high-voltage switchgear, which can avoid the risk of workers falling, improve detection efficiency, and has a small size, strong adaptability, and is conducive to promotion.

[0006] To achieve the above-mentioned purpose, the utility model proposes a partial discharge monitoring device for a high-voltage switchgear, comprising a traveling device and a discharge detection sensor arranged on the traveling device, wherein the traveling device comprises a support, a plurality of attraction and fixing mechanisms, a plurality of rolling support mechanisms and a traveling drive mechanism, the bottom of the support is provided with an attraction and fixing mechanism and a rolling support mechanism, the support is provided with a traveling drive mechanism, the support is provided with an adjustment mechanism, the adjustment mechanism is provided with a discharge detection sensor, and the adjustment mechanism drives the discharge detection sensor to adjust in multiple directions.

[0007] Preferably, the attraction and fixing mechanism is an electromagnet.

[0008] Preferably, the rolling support mechanism is arranged in a corresponding receiving groove on the support.

[0009] Preferably, the rolling support mechanism includes a universal ball and a support spring, and two ends of the support spring are fixedly connected to the universal ball and the top end of the accommodating groove respectively.

[0010] Preferably, the travel drive mechanism includes a rotary motor, a worm gear transmission box and an electric wheel. The rotary motor drives the input end of the worm gear transmission box to rotate, and the output end of the worm gear transmission box passes through the support and is provided with an electric wheel.

[0011] Preferably, the bottom of the support is provided with an accommodating groove for accommodating the electric wheel.

[0012] Preferably, the adjusting mechanism includes an adjusting motor, a support body is provided at the driving end of the adjusting motor, pulleys are respectively provided at both ends of the support body, a transmission belt is provided on the pulley, a driving motor for driving one of the pulleys to rotate is provided on the support body, a slide slot hole I is provided on the support body, a slide slot hole II connected to the slide slot hole I is provided at the rear end of the support body, a sliding body is provided in the slide slot hole II, one end of the sliding body is fixedly connected to the transmission belt, and the other end is provided with a discharge detection sensor located in the slide slot hole I.

[0013] Preferably, the regulating motor is a rotating motor with a self-locking function.

[0014] Preferably, the support body is detachably mounted on the driving end of the adjusting motor via a support fixing clamp, and the fastening bolts of the support fixing clamp are hand-tightened bolts.

[0015] Preferably, the regulating motor is fixed on the support via a mounting base, the mounting base is provided with a sensor, and the support body is provided with an induced body that matches the sensor.

[0016] The beneficial effects of the utility model are as follows: the utility model is provided with an attraction fixing mechanism and a rolling support mechanism at the bottom of the support, and a walking drive mechanism is provided on the support. Compared with the existing technology, the utility model can avoid the risk of workers falling, improve the detection efficiency, has a small size, strong adaptability, and is conducive to promotion.

[0017] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings.

Brief Description of the Drawings

[0018] Figure 1 This is a structural diagram of a partial discharge monitoring device for a high-voltage switch cabinet according to the utility model;

[0019] Figure 2 It is a partial side view of the running gear.

[0020] In the figure: 1-traveling device, 2-discharge detection sensor, 11-support, 12-attraction and fixing mechanism, 13-rolling support mechanism, 14-traveling drive mechanism, 15-accommodating groove, 131-universal ball, 132-support spring, 141-rotating motor, 142-worm gear transmission box, 143-electric wheel, 144-accommodating groove, 16-adjusting mechanism, 161-adjusting motor, 162-support body, 163-pulley, 164-transmission belt, 165-slide hole I, 166-slide hole II, 167-drive motor, 168-sliding body, 169-pillar fixing clamp, 1610-sensor, 1611-sensed body. [Specific implementation method]

[0021] See Figure 1 、 2 The utility model provides a partial discharge monitoring device for a high-voltage switch cabinet, comprising a traveling device 1 and a discharge detection sensor 2 arranged on the traveling device 1. The traveling device 1 comprises a support 11, a plurality of attraction and fixing mechanisms 12, a plurality of rolling support mechanisms 13 and a traveling drive mechanism 14. The bottom of the support 11 is provided with an attraction and fixing mechanism 12 and a rolling support mechanism 13. The support 11 is provided with a traveling drive mechanism 14. The support 11 is provided with an adjustment mechanism 16. The adjustment mechanism 16 is provided with a discharge detection sensor 2. The adjustment mechanism 16 drives the discharge detection sensor 2 to adjust in multiple directions.

[0022] The attracting and fixing mechanism 12 is an electromagnet.

[0023] The rolling support mechanism 13 is arranged in the corresponding receiving groove 15 on the support 11. The rolling support mechanism 13 includes a universal ball 131 and a support spring 132. The two ends of the support spring 132 are fixedly connected to the universal ball 131 and the top of the receiving groove 15 respectively.

[0024] The travel drive mechanism 14 includes a rotary motor 141 , a worm gear transmission box 142 and an electric wheel 143 . The rotary motor 141 drives the input end of the worm gear transmission box 142 to rotate. The output end of the worm gear transmission box 142 passes through the support 11 and is provided with an electric wheel 143 .

[0025] The bottom of the support 11 is provided with an accommodating groove 144 for accommodating the electric wheel 143 .

[0026] The adjusting mechanism 16 includes an adjusting motor 161, a driving end of the adjusting motor 161 is provided with a support body 162, both ends of the support body 162 are respectively provided with pulleys 163, a transmission belt 164 is provided on the pulley 163, and a driving motor 167 for driving one of the pulleys 163 to rotate is provided on the support body 162, a slide hole I165 is provided on the support body 162, and a slide hole II166 connected to the slide hole I165 is provided at the rear end of the support body 162, a sliding body 168 is provided in the slide hole II166, one end of the sliding body 168 is fixedly connected to the transmission belt 164, and the other end is provided with a discharge detection sensor 2 located in the slide hole I165.

[0027] The regulating motor 161 is a rotating motor with a self-locking function.

[0028] The support body 162 is detachably mounted on the driving end of the adjustment motor 161 via a support fixing clamp 169 , and the fastening bolts of the support fixing clamp 169 are hand-tightened bolts.

[0029] The regulating motor 161 is fixed on the support 11 via a mounting base 160 . The mounting base 160 is provided with a sensor 1610 . The support body 162 is provided with an induced body 1611 that matches the sensor 1610 .

[0030] Working process of this utility model:

[0031] During the operation of the partial discharge monitoring device for a high-voltage switch cabinet according to the present invention, the traveling device 1 is fixed on the current detection surface of the switch cabinet by the attraction of the attraction fixing mechanism 12, and the stable support of the traveling device 1 is ensured by the rolling support mechanism 13; the position movement of the traveling device 1 is achieved by the traveling drive mechanism 14, and the traveling device 1 drives the discharge detection sensor 2 to move to the detection position through the adjustment mechanism 16.

[0032] When the walking device 1 needs to change direction, the rotating motor 141 is started to drive the electric wheel 143 through the worm gear transmission box 142 to adjust the walking direction.

[0033] When the discharge detection sensor 2 needs to be positioned, the adjustment motor 161 is started to drive the support body 162 to rotate, and the support body 162 drives the discharge detection sensor 2 to adjust its circumferential position. The drive motor 167 is started to drive the sliding body 168 to move through the cooperation of the pulley 163 and the transmission belt 164, and the sliding body 168 drives the discharge detection sensor 2 to adjust its radial position.

[0034] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. A partial discharge monitoring device for a high-voltage switchgear, characterized by: The invention comprises a walking device (1) and a discharge detection sensor (2) provided on the walking device (1), wherein the walking device (1) comprises a support (11), a plurality of attraction fixing mechanisms (12), a plurality of rolling support mechanisms (13) and a walking drive mechanism (14), wherein the bottom of the support (11) is provided with an attraction fixing mechanism (12) and a rolling support mechanism (13), wherein the walking drive mechanism (14) is provided on the support (11), wherein the rolling support mechanism (13) is provided in a corresponding receiving groove (15) on the support (11), wherein the rolling support mechanism (13) comprises a universal ball (131) and a support spring (132), wherein the two ends of the support spring (132) are fixedly connected to the universal ball (131) and the top end of the receiving groove (15), respectively, and wherein the walking drive mechanism (14) comprises a rotating motor (141), a worm gear transmission box (142) and an electric wheel (143), wherein the rotating motor (141) drives the input end of the worm gear transmission box (142) to rotate. The output end of the worm gear transmission box (142) passes through the support (11) and is provided with an electric wheel (143). The support (11) is provided with an adjustment mechanism (16). The adjustment mechanism (16) includes an adjustment motor (161). The driving end of the adjustment motor (161) is provided with a support body (162). Both ends of the support body (162) are provided with pulleys (163). The pulleys (163) are provided with a transmission belt (164). The support body (162) is provided with a driving belt (164). A driving motor (167) is provided to rotate one of the pulleys (163), a slide slot hole I (165) is provided on the support body (162), a slide slot hole II (166) connected to the slide slot hole I (165) is provided at the rear end of the support body (162), a sliding body (168) is provided in the slide slot hole II (166), one end of the sliding body (168) is fixedly connected to the transmission belt (164), and the other end is provided with a discharge detection sensor (2) located in the slide slot hole I (165).

2. A high-voltage switchgear partial discharge monitoring device according to claim 1, characterized in that: The attracting and fixing mechanism (12) is an electromagnet.

3. The high-voltage switchgear partial discharge monitoring device according to claim 1, characterized in that: The regulating motor (161) is a rotary motor with a self-locking function.

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