Disc insulator withstand voltage detection device

Abstract

The invention relates to a disc insulator withstand voltage detection device, and belongs to the technical field of insulator withstand voltage detection, the disc insulator withstand voltage detection device comprises a base, a grounding support and a rotating mechanism, and an insulating column is provided with a metal support frame; a voltage-sharing cover is installed on the upper portion of the metal supporting frame. Spring type grounding electrodes are mounted on the grounding bracket and are uniformly arranged along the edge of the grounding bracket; the upper end face of the spring type grounding electrode is provided with a plugging hole, and the spring type grounding electrode is in contact connection with a lower hardware fitting of the to-be-tested disc type insulator. The lower end of the metal supporting frame is provided with a plurality of metal plugging columns, the lower ends of the metal plugging columns are provided with plugging parts used for plugging upper hardware fittings of a to-be-tested disc insulator, the number of the metal plugging columns is equal to that of the spring type grounding electrodes, and the metal plugging columns and the spring type grounding electrodes can be in one-to-one correspondence at the same time. The clamp is used for clamping and installing a to-be-tested disc insulator. The problem that the to-be-tested disc insulator is not easy to fix and easy to topple in the test process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of insulator withstand voltage detection, and in particular to a disc insulator withstand voltage detection device. Background Art

[0002] Insulating materials are usually provided in the transmission lines of power systems to prevent current leakage and ensure the normal operation of the transmission lines. Among them, disc insulators are an insulating material used in power systems. They are composed of multiple insulator pieces and are usually used in high-voltage transmission lines. The main function of disc insulators is to provide insulation support in transmission lines to prevent current leakage and short circuits. Disc insulators are usually made of insulating materials such as ceramics or glass, and have good insulation properties and mechanical strength. They are usually installed on the towers of transmission lines to support the conductors of the transmission lines and prevent current leakage between the conductors and the towers. The advantages of disc insulators are that they have good insulation properties and mechanical strength and can withstand high voltage and harsh environmental conditions. In addition, disc insulators also have the advantages of easy installation and maintenance, which can improve the reliability and safety of transmission lines.

[0003] Disc insulators are the most widely used insulating materials in power transmission lines, and they require a large amount of testing. The existing method is to test multiple insulators simultaneously by stacking them head to tail. In this operation method, the insulators are not easy to fix during the test, and there is a risk of the insulators tipping over during the pressurization process. Moreover, when multiple insulators are short-circuited and pressurized at the same time, only defects can be detected for multiple insulators. To specifically confirm which insulator is defective, it is necessary to further test the insulators in the test batch one by one. The testing process is cumbersome, and multiple tests will damage the performance of the insulators. Moreover, the existing milliammeter for testing leakage current is directly connected to the ground. During the test, if the test product is broken down, a large leakage current will be generated, which will bring great safety hazards to personnel and equipment. Summary of the invention

[0004] The object of the present invention is to provide a disc insulator withstand voltage detection device for solving any of the above-mentioned technical problems.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A disc insulator withstand voltage detection device, the device comprising a base, a grounding bracket and a rotating mechanism, the grounding bracket is used for grounding; The grounding bracket is rotatably mounted on the base through a rotating mechanism; An insulating column is installed on the upper part of the grounding bracket. The insulating column is perpendicular to the grounding bracket. A disc-shaped metal support frame is installed on the upper part of the insulating column. A voltage equalizing cover for connecting to a high-voltage power supply is installed on the upper part of the metal support frame; A plurality of spring-type grounding electrodes are also installed on the upper part of the grounding bracket. The plurality of spring-type grounding electrodes are vertically installed on the grounding bracket and are evenly arranged along the edge of the grounding bracket. The upper end surface of the spring-type grounding electrode is provided with a plug-in hole for plugging in the lower hardware of the disc insulator to be tested, and the spring-type grounding electrode is in contact with and connected to the lower hardware of the disc insulator to be tested; A plurality of metal plug-in posts are provided at the lower end of the metal support frame, and a plug-in portion is provided at the lower end of the metal plug-in post for plugging into the upper hardware of the disc insulator to be tested. The plurality of metal plug-in posts is equal in number to the plurality of spring-type grounding electrodes and can be positioned one-to-one relative to each other at the same time; when the positions of the metal plug-in posts and the spring-type grounding electrodes are relative to each other, the relative spring-type grounding electrodes and the metal plug-in posts are used to clamp and install the disc insulator to be tested.

[0006] Furthermore, a leakage current meter is installed on the metal plug-in column, and the leakage current meter is used to detect the leakage current of the disc insulator to be tested.

[0007] Furthermore, the leakage current meter is a wireless transmission type leakage current meter; The withstand voltage detection device is equipped with a handheld terminal; The leakage current meter includes a Hall current sensor, a microprocessor and a wireless communication module; The Hall current sensor is mounted on a metal plug-in column; The microprocessor is connected to a Hall current sensor for detecting leakage current; The microprocessor is connected to the wireless communication module and is used for uploading the detected leakage current to the handheld terminal.

[0008] Furthermore, an automatic trip switch is connected in series to the metal plug post; The microprocessor is electrically connected to the automatic tripping switch to control the opening and closing of the automatic tripping switch.

[0009] Furthermore, the wireless communication module adopts a Bluetooth module or a WiFi module.

[0010] Furthermore, the leakage current meter is powered by a lithium battery.

[0011] Furthermore, the bottom of the base is provided with running wheels.

[0012] Furthermore, there are 16 metal plug posts and spring-type grounding electrodes; The grounding bracket is made of steel.

[0013] Furthermore, the rotating mechanism includes a mounting platform, a bearing and a connecting shaft, and the mounting platform is fixed on the base; The outer ring of the bearing is embedded in the upper end surface of the mounting platform, the first end of the connecting shaft is coaxially inserted into the inner ring of the bearing and fixedly connected to the inner ring of the bearing, and the second end of the connecting shaft is fixedly connected to the grounding bracket.

[0014] Furthermore, the measurement range of the leakage current meter is: 0-5mA.

[0015] Beneficial effects of the present invention: Insert the hardware at the lower end of the disc insulator to be tested into the spring-type grounding electrode in sequence, compress the spring-type grounding electrode, and then put the upper end of the disc insulator to be tested on the metal plug-in column. Under the elastic force of the spring-type grounding electrode, the disc insulator to be tested is firmly fixed between the spring-type grounding electrode and the metal plug-in column. This solves the technical problem that the disc insulator to be tested is difficult to fix and easy to fall during the test in the traditional operation method; The present invention is provided with a plurality of spring-type grounding electrodes and metal plug-in posts used in conjunction with the spring-type grounding electrodes. The two are used in conjunction to install the disc insulator to be tested, and each plug-in post is provided with a leakage current meter, that is, each disc insulator to be tested has an independent leakage detection circuit corresponding thereto. The plurality of leakage current meters respectively detect the leakage current of the disc insulator to be tested, and the plurality of disc insulators to be tested can be detected simultaneously, thereby improving the detection efficiency, and the performance of the disc insulator to be tested can be detected at one time without performing a secondary detection on the disc insulator to be tested, thereby avoiding the problem of damage to the disc insulator to be tested caused by multiple detections of the disc insulator to be tested. The present invention is provided with an automatic trip switch, and a microprocessor is electrically connected to the automatic trip switch. When the microprocessor detects that there is leakage current in the circuit where the automatic trip switch 10 is located, the automatic trip switch 10 will be disconnected to disconnect the detection circuit where it is located, thereby avoiding the potential safety hazard caused by the breakdown of the detection device due to the substandard withstand voltage quality of the disc insulator to be tested, which in turn causes the grounding disconnection.

[0016] These and other objects, features and advantages of the present invention will be fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic diagram of the structure of the disc insulator withstand voltage detection device of the present invention is shown.

[0018] Figure 2 The schematic diagram of the structure of the spring-type grounding electrode of the disc insulator withstand voltage detection device of the present invention is shown.

[0019] Figure numerals: 1-base, 2-grounding bracket, 3-insulating column, 4-metal supporting frame, 5-voltage equalizing cover, 6-spring-type grounding electrode, 7-metal plug-in column, 8-disc insulator to be tested, 9-traveling wheel, 10-connecting shaft, 11-mounting table. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0021] It should be understood by those skilled in the art that, in the disclosure of the specification, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device including a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. Therefore, the above terms should not be understood as limiting the present invention.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] refer to Figure 1 and Figure 2 A disc insulator withstand voltage detection device according to a preferred embodiment of the present invention will be described in detail below, wherein, a disc insulator withstand voltage detection device comprises a base 1, a disc-shaped grounding bracket 2 and a rotating mechanism, and the grounding bracket 2 is used for grounding.

[0024] The grounding bracket 2 is rotatably mounted on the base 1 through a rotating mechanism, and the grounding bracket 2 can rotate relative to the base 1. The bottom of the base 1 is provided with a walking wheel 9 for easy movement.

[0025] A preset number of mounting positions consisting of spring-type grounding electrodes 6 and metal plug-in columns 7 are evenly mounted on the grounding bracket 2 along the circumference of the grounding bracket 2 , and the mounting positions are used to mount the disc insulators 8 to be tested.

[0026] When in use, first install the disc insulator 8 to be tested on the installation position with a short distance. After installation, rotate the grounding bracket 2. The grounding bracket 2 rotates relative to the base 1 under the rotation action of the rotating mechanism, and stops after rotating to the installation position where the disc insulator 8 to be tested is not installed, and install the disc insulator 8 to be tested. In this way, there is no need for the staff to walk back and forth, and the disc insulator to be tested can be installed while standing in place, saving manpower.

[0027] An insulating column 3 is installed on the upper part of the grounding bracket 2 . The insulating column 3 is perpendicular to the grounding bracket 2 . A disc-shaped metal support frame 4 is installed on the upper part of the insulating column 3 .

[0028] A voltage grading cover 5 for connecting to a high-voltage power supply is installed on the upper part of the metal support frame 4. When a large number of disc insulators 8 to be tested are subjected to withstand voltage testing at the same time, the voltage grading cover 5 is used to make the electric field uniform, reduce electric field distortion, and ensure that the voltage of the withstand voltage testing of the disc insulators 8 to be tested is uniform.

[0029] A plurality of spring-type grounding electrodes 6 are also installed on the upper portion of the grounding bracket 2 . The plurality of spring-type grounding electrodes 6 are vertically installed on the grounding bracket 2 and are evenly arranged along the edge of the grounding bracket 2 .

[0030] The upper end surface of the spring-type grounding electrode 6 is provided with a plug-in hole for plugging into the lower hardware of the disc insulator 8 to be tested. The spring-type grounding electrode 6 is in contact with and connected to the hardware of the disc insulator 8 to be tested.

[0031] A plurality of metal plug-in posts 7 are provided at the lower end of the metal support frame 4 , and a plug-in portion is provided at the lower end of the metal plug-in post 7 for plugging in the upper hardware of the disc insulator 8 to be tested.

[0032] It can be understood that an insulating layer is provided between the lower hardware of the disc insulator 8 to be tested and the upper hardware of the disc insulator 8 to be tested.

[0033] The number of the plurality of metal plug-in posts 7 is equal to the number of the plurality of spring-type grounding electrodes 6 and they can be positioned opposite to each other in a one-to-one manner.

[0034] When the metal plug-in posts 7 and the spring-type grounding electrodes 6 are positioned opposite to each other, the spring-type grounding electrodes 6 and the metal plug-in posts 7 that are positioned opposite to each other are used to clamp and install the disc insulator 8 to be tested.

[0035] A leakage current meter is installed on the metal plug-in column 7, and the leakage current meter is used to detect the leakage current of the disc insulator 8 to be tested.

[0036] When in use, the grounding bracket 2 is rotated, and the hardware at the lower end of the disc insulator 8 to be tested is inserted into the spring-type grounding electrode 6 in turn, and the spring-type grounding electrode 6 is compressed, and then the upper end of the disc insulator 8 to be tested is sleeved on the metal plug-in column 7. Under the elastic force of the spring-type grounding electrode 6, the disc insulator 8 to be tested is firmly fixed between the spring-type grounding electrode 6 and the metal plug-in column 7. The technical problem that the disc insulator 8 to be tested is difficult to fix and easy to fall during the test in the traditional operation mode is solved.

[0037] The present invention is provided with a plurality of spring-type grounding electrodes 6 and metal plug-in posts 7 used in conjunction with the spring-type grounding electrodes 6. The two are used in conjunction to install the disc insulator 8 to be tested, and each metal plug-in post 7 is provided with a leakage current meter 9, that is, each disc insulator 8 to be tested has an independent leakage detection circuit corresponding thereto. The plurality of leakage current meters 9 respectively detect the leakage current of the disc insulator to be tested, and the plurality of disc insulators to be tested can be detected simultaneously, thereby improving the detection efficiency, and the performance of the disc insulator 8 to be tested can be detected at one time without the need for secondary detection, thereby avoiding the problem of damage to the disc insulator 8 to be tested caused by multiple detections.

[0038] The present invention is provided with a voltage grading cover 5, through which an external voltage is connected. After the external voltage enters the voltage grading cover 5, a uniform voltage is formed. After the high voltage is uniformly voltageed by the voltage grading cover 5, it is connected to both ends of the disc insulator to be tested through the metal support frame 4 and the metal plug-in column 7, so as to perform a withstand voltage test on the disc insulator to be tested.

[0039] It can be understood that the principle of the present invention for performing a withstand voltage breakdown test on the disc insulator to be tested is to apply a high voltage of a certain intensity at both ends of the disc insulator to be tested to see whether the disc insulator 8 to be tested is broken down. If it is broken down, the leakage current meter 9 connected in series to the metal plug-in column 7 will be able to detect the leakage current of the disc insulator to be tested; if it is not broken down, it means that the disc insulator 8 to be tested meets the quality requirements and has no defects.

[0040] The leakage current meter is a wireless transmission leakage current meter, and the measurement range of the leakage current meter is: 0-5mA. The withstand voltage detection device is equipped with a handheld terminal.

[0041] The leakage current meter comprises a Hall current sensor, a microprocessor and a wireless communication module.

[0042] The microprocessor is connected to a Hall current sensor for detecting leakage current.

[0043] The microprocessor is connected to the wireless communication module and is used for uploading the detected leakage current to the handheld terminal.

[0044] The leakage current meter 9 uploads the monitored current data to the handheld terminal by wireless transmission, and can monitor the leakage current data of each disc insulator to be tested in real time. The leakage current meter 9 on each detection circuit uploads a corresponding current data for easy viewing by the test personnel.

[0045] In this embodiment, the Hall current sensor is mounted on the metal plug-in column 7 so that current passes through the Hall current sensor. The microprocessor is connected to the signal output pin (OUT) of the Hall current sensor to monitor the leakage current signal.

[0046] The wireless communication module adopts a Bluetooth module or a WiFi module. The wireless communication module can be connected to a handheld terminal to upload the detected current data. The wireless communication module communicates with the handheld terminal via Bluetooth or WiFi to achieve real-time data upload. The leakage current meter is powered by a lithium battery.

[0047] An automatic trip switch is also connected in series to the metal plug-in column 7, and the microprocessor is electrically connected to the automatic trip switch to control the opening and closing of the automatic trip switch.

[0048] In this embodiment, the metal plug post 7 is equivalent to a "wire" connected to high voltage electricity, and the wire is connected in series with a leakage current meter 9 and an automatic trip switch 10. The "wire" controls the opening and closing of the circuit where the automatic trip switch 10 is located by opening and closing the automatic trip switch 10.

[0049] The microprocessor monitors the leakage current signal through the Hall current sensor. When the microprocessor detects the presence of leakage current in the "wire" where the automatic trip switch 10 is located, the microprocessor controls the automatic trip switch 10 to disconnect, thereby disconnecting the "wire" and then disconnecting the high voltage to ensure the safety of the detection.

[0050] The present invention is provided with an automatic trip switch, and a microprocessor is electrically connected to the automatic trip switch. When the microprocessor detects that there is leakage current in the circuit where the automatic trip switch 10 is located, the automatic trip switch 10 will be disconnected to disconnect the detection circuit where it is located, thereby avoiding the potential safety hazard caused by the breakdown of the detection device due to the substandard withstand voltage quality of the disc insulator to be tested, which in turn causes the grounding disconnection.

[0051] There are 16 metal plug-in posts 7 and 16 spring-type grounding electrodes 6. A maximum of 16 disc insulators to be tested can be tested simultaneously.

[0052] The grounding bracket 2 is made of steel. The grounding bracket 2 needs to have good conductivity to ensure that the current can flow smoothly into the ground, good corrosion resistance to ensure that it will not be corroded during long-term use, and sufficient strength to ensure that it can withstand external forces. When selecting the material of the grounding bracket 2, conductivity, corrosion resistance, strength and cost are comprehensively considered, and steel is finally selected.

[0053] The rotating mechanism comprises a mounting platform 11, a bearing and a connecting shaft 10, and the mounting platform 11 is fixed on the base 1; The outer ring of the bearing is embedded in the upper end surface of the mounting platform 11 , the first end of the connecting shaft 10 is coaxially inserted into the inner ring of the bearing and fixedly connected to the inner ring of the bearing, and the second end of the connecting shaft 10 is fixedly connected to the grounding bracket 2 .

[0054] In order to improve the test efficiency and reduce the labor intensity of the test personnel, the present invention designs a disc insulator withstand voltage test device, which is composed of a rotating insulator bracket and a multi-channel leakage current measuring device. The rotating withstand voltage bracket is provided with a top voltage grading cover 5 to meet the 60kV test requirements. The spring-type grounding electrode 6 adopts a spring device, which can be automatically grounded and is easy to install.

[0055] The test device is equipped with 16 wireless leakage current devices, which measure the leakage current of each high-voltage outlet end of the insulator, transmit it to the console wirelessly, and display the 16 leakage currents on the LCD screen. When the insulator breaks down, the console can record the voltage at the time of breakdown, so as to determine the sample that has broken down. This device can detect the leakage current of each insulator and the breakdown test sample during the test process, greatly improving work efficiency.

[0056] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A disc insulator withstand voltage detection device, characterized in that: The device comprises a base (1), a grounding bracket (2) and a rotating mechanism, wherein the grounding bracket (2) is used for grounding; The grounding bracket (2) is rotatably mounted on the base (1) via a rotating mechanism; An insulating column (3) is installed on the upper part of the grounding bracket (2), the insulating column (3) is perpendicular to the grounding bracket (2), and a disc-shaped metal support frame (4) is installed on the upper part of the insulating column (3); A voltage equalizing cover (5) for connecting to a high-voltage power supply is installed on the upper part of the metal support frame (4); A plurality of spring-type grounding electrodes (6) are also installed on the upper part of the grounding support (2), and the plurality of spring-type grounding electrodes (6) are all vertically installed on the grounding support (2) and are evenly arranged along the edge of the grounding support (2); An insertion hole for inserting the lower hardware of the disc insulator (8) to be tested is provided on the upper end surface of the spring-type grounding electrode (6), and the spring-type grounding electrode (6) is in contact and connection with the lower hardware of the disc insulator (8) to be tested; A plurality of metal plug-in posts (7) are provided at the lower end of the metal support frame (4), and a plug-in portion is provided at the lower end of the metal plug-in post (7) for plugging into an upper hardware fitting of a disc insulator (8) to be tested. The plurality of metal plug-in posts (7) are equal in number to the plurality of spring-type grounding electrodes (6) and can be positioned one-to-one relative to each other at the same time; when the metal plug-in posts (7) and the spring-type grounding electrodes (6) are positioned one-to-one relative to each other, the relative spring-type grounding electrodes (6) and the metal plug-in posts (7) are used to clamp and install the disc insulator (8) to be tested.

2. The withstand voltage detection device according to claim 1, characterized in that: A leakage current meter is mounted on the metal plug-in column (7), and the leakage current meter is used to detect the leakage current of the disc insulator (8) to be tested.

3. The withstand voltage detection device according to claim 2, characterized in that: The leakage current meter is a wireless transmission type leakage current meter; The withstand voltage detection device is equipped with a handheld terminal; The leakage current meter includes a Hall current sensor, a microprocessor and a wireless communication module; The Hall current sensor is mounted on the metal plug post (7); The microprocessor is connected to a Hall current sensor for detecting leakage current; The microprocessor is connected to the wireless communication module and is used for uploading the detected leakage current to the handheld terminal.

4. The withstand voltage detection device according to claim 3, characterized in that: An automatic trip switch is also connected in series to the metal plug-in column (7); The microprocessor is electrically connected to the automatic tripping switch to control the opening and closing of the automatic tripping switch.

5. The withstand voltage detection device according to claim 4, characterized in that: The wireless communication module adopts a Bluetooth module or a WiFi module.

6. The withstand voltage detection device according to claim 5, characterized in that: The leakage current meter is powered by a lithium battery.

7. The withstand voltage detection device according to claim 1, characterized in that: The bottom of the base (1) is provided with running wheels (9).

8. The withstand voltage detection device according to claim 1, characterized in that: There are 16 metal plug-in posts (7) and 16 spring-type grounding electrodes (6); The grounding bracket (2) is made of steel.

9. The withstand voltage detection device according to claim 1, characterized in that: The rotating mechanism comprises a mounting platform (11), a bearing and a connecting shaft (10), wherein the mounting platform (11) is fixed on the base (1); The outer ring of the bearing is embedded in the upper end surface of the mounting platform (11), the first end of the connecting shaft (10) is coaxially inserted into the inner ring of the bearing and fixedly connected to the inner ring of the bearing, and the second end of the connecting shaft (10) is fixedly connected to the grounding bracket (2).

10. The withstand voltage detection device according to claim 1, characterized in that: The measuring range of the leakage current meter is: 0-5mA.

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