Device for insulation test of high-voltage electrical equipment

Abstract

The utility model discloses a device for high -voltage electrical equipment insulation detection test relates to insulation detection device technical field, including the protection box, the cavity of protection box fixedly connected with U type support board between two ends, the top one end of U type support board is fixedly connected with signal receiver, the top other end of U type support board is fixedly connected with pulse generator, the cavity bottom one end of protection box is fixedly connected with power module. The protection box provided by the utility model is convenient for the detection operation of the detected device quickly on the basis of realizing shielding electromagnetic and preventing interference influence detection accuracy, thereby solve the problem that the detection accuracy of the existing high -voltage electrical equipment insulation detection test device is interfered because of lacking electromagnetic shielding protection structure, and because of the detection process is complicated, it is difficult to realize quick detection, influence power system operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of insulation testing devices, specifically to a device for insulation testing of high-voltage electrical equipment. Background Technology

[0002] The device used for insulation testing of high-voltage electrical equipment is a specialized instrument that evaluates whether the insulation performance of the equipment meets safety standards by applying high voltage and measuring relevant electrical parameters (such as insulation resistance, leakage current, dielectric loss factor, etc.).

[0003] According to the public announcement number CN206114839U, the device is titled "Apparatus for Insulation Testing of High-Voltage Electrical Equipment," which includes a controller, overvoltage and overcurrent setter, time and date display, level, and temperature sensor. The device is equipped with a level to keep the testing device horizontal and has an embedded time and date display and information storage to store test data and time / date information.

[0004] The above technical solution has the following shortcomings;

[0005] The aforementioned solutions lack effective electromagnetic shielding protection structures in practical applications. During testing, the complex external electromagnetic environment generates numerous interference signals. These interference signals can easily penetrate the testing device, interfering with core components such as the testing circuit and sensors. This leads to deviations or even errors in the testing data, severely affecting testing accuracy. Consequently, the test results cannot accurately reflect the insulation status of high-voltage electrical equipment, making it difficult to reliably assess the equipment's insulation performance. Furthermore, the solutions are not convenient for rapid testing operations, resulting in cumbersome procedures and a lack of efficient and rapid testing structures. They fail to meet the power system's demand for rapid testing of high-voltage electrical equipment. When equipment malfunctions or requires periodic testing, this can easily lead to prolonged power supply interruptions, reducing the operating efficiency of the power system. Utility Model Content

[0006] In view of the problems existing in the above-mentioned devices for insulation testing of high-voltage electrical equipment, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a device for insulation testing of high-voltage electrical equipment, which solves the problems of existing high-voltage electrical equipment insulation testing devices lacking electromagnetic shielding protection structures, resulting in interference with testing accuracy, and the cumbersome testing process making it difficult to achieve rapid testing, thus affecting the operating efficiency of the power system.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An apparatus for insulation testing of high-voltage electrical equipment includes a protective enclosure. A U-shaped support plate is fixedly connected between the two ends of the cavity of the protective enclosure. A signal receiver is fixedly connected to one top end of the U-shaped support plate, and a pulse generator is fixedly connected to the other top end of the U-shaped support plate. A power module is fixedly connected to one bottom end of the cavity of the protective enclosure, and a data processing module is fixedly connected to the other bottom end of the cavity of the protective enclosure. A connection compartment is fixedly connected to the side wall of the protective enclosure.

[0010] A protective chamber is fixedly connected to the top of the protective enclosure. An arc-shaped protective cover is rotatably connected to the side wall of the protective chamber. A UHF planar helical antenna is fixedly connected to one end of the cavity of the protective chamber, and a grounding component is fixedly connected to the other end of the cavity of the protective chamber. One end of the grounding component passes through the top of the protective enclosure and is fixedly connected to the inner side wall. A shielded connecting wire is fixedly connected to the output end of the pulse generator. A probe assembly is fixedly connected to the other end of the shielded connecting wire. A shielding baffle is rotatably connected to the side wall of the protective enclosure. A limiting mechanism is provided between the shielding baffle and the protective enclosure. A control display panel is fixedly connected to the side wall of the shielding baffle through an opening.

[0011] Preferably, the limiting mechanism includes a positioning plate, a positioning port, a limiting port, a limiting rod, a spring, and an adjusting groove. The positioning plate is fixedly connected to the side wall of the shielding baffle. A positioning port is opened at one end of the side wall of the protective box. The positioning plate is engaged with the positioning port. A limiting port is opened on the side wall of the positioning plate. A limiting rod is slidably connected to one end of the side wall cavity of the protective box. A spring is fixedly connected to one end of the limiting rod. The other end of the limiting rod is inserted into the limiting port. An adjusting groove is opened on the surface of the protective box.

[0012] Preferably, the protective enclosure includes a high-frequency shielding outer layer and a low-frequency shielding inner layer, and a conductive gel filling layer is fixedly connected between the high-frequency shielding outer layer and the low-frequency shielding inner layer.

[0013] Preferably, the grounding assembly includes a grounding wire, and the other end of the grounding wire is fixedly connected to a grounding rod head.

[0014] Preferably, the probe assembly includes a contact coupling probe, the output end of which is fixedly connected to a gel guide head, and the sidewall of which is fixedly connected to a polishing disc.

[0015] Furthermore, a protective socket is fixedly connected inside the cavity of the protective chamber, and the protective socket is plugged into a contact coupling probe.

[0016] Preferably, one end of the limiting rod passes through the adjusting slide groove, and the other end is fixedly connected to a lever.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. This utility model utilizes a high-frequency shielding outer layer of the protective enclosure to block high-frequency electromagnetic interference, a low-frequency shielding inner layer to resist low-frequency interference, and a conductive gel filling layer to eliminate gaps in the shielding layer, achieving all-round electromagnetic shielding. The grounding component reduces grounding resistance through the grounding wire and grounding rod head, quickly dissipating static electricity and electromagnetic interference charges. The shielded connection wire reduces electromagnetic leakage in pulse signal transmission. The shielding baffle closes when not in use, effectively isolating external electromagnetic interference and significantly improving the detection accuracy of the detection device in complex electromagnetic environments.

[0019] 2. This utility model integrates core components such as signal receivers and pulse generators into a protective enclosure, facilitating transportation and management. A U-shaped support plate optimizes component layout and prevents mutual interference. A limiting mechanism uses a positioning plate and positioning port for initial positioning, while a spring-driven limiting rod securely positions the shielding baffle. An adjusting slide and a lever allow for quick switching between the shielding baffle's open and closed states. A protective socket provides storage for contact-type coupling probes. The plug-in connection facilitates quick installation and disassembly, simplifying the testing process and significantly improving testing preparation and operational efficiency.

[0020] 3. This utility model utilizes a contact-type coupling probe of the probe assembly to directly contact the equipment to collect signals. The gel probe reduces signal transmission loss due to its good conductivity and coupling performance. The set grinding disc can polish the equipment detection area before testing to remove oxide layers and dirt, ensuring that the contact-type coupling probe is in close contact with the equipment surface, effectively improving the signal acquisition quality, thereby ensuring the accuracy of insulation detection signals and improving the overall detection efficiency and reliability of results. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a sectional perspective view of the present invention;

[0024] Figure 3 This is a second perspective view of the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the probe assembly of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Protective enclosure; 2. U-shaped support plate; 3. Signal receiver; 4. Pulse generator; 5. Power module; 6. Data processing module; 7. Connection compartment; 8. Protective compartment; 9. Arc-shaped protective cover; 10. UHF planar helical antenna; 11. Grounding assembly; 12. Shielded connection wire; 13. Probe assembly; 14. Shielding baffle; 15. Control display panel; 16. Positioning plate; 17. Positioning port; 18. Limiting port; 19. Limiting rod; 20. Spring; 21. Adjustment groove; 22. High-frequency shielding outer layer; 23. Low-frequency shielding inner layer; 24. Conductive gel filling layer; 25. Grounding wire; 26. Grounding rod head; 27. Contact coupling probe; 28. Gel guide head; 29. ​​Grinding disc; 30. Protective socket; 31. Paddle. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model discloses an apparatus for insulation testing of high-voltage electrical equipment.

[0030] This utility model provides, for example Figure 1-4 The device shown for insulation testing of high-voltage electrical equipment includes a protective enclosure 1, a U-shaped support plate 2 fixedly connected between the two ends of the cavity of the protective enclosure 1, a signal receiver 3 fixedly connected to the top end of the U-shaped support plate 2, a pulse generator 4 fixedly connected to the top other end of the U-shaped support plate 2, a power module 5 fixedly connected to the bottom end of the cavity of the protective enclosure 1, a data processing module 6 fixedly connected to the bottom other end of the cavity of the protective enclosure 1, and a connection compartment 7 fixedly connected to the side wall of the protective enclosure 1.

[0031] A protective chamber 8 is fixedly connected to the top of the protective housing 1. An arc-shaped protective cover 9 is rotatably connected to the side wall of the protective chamber 8. A UHF planar helical antenna 10 is fixedly connected to one end of the cavity of the protective chamber 8, and a grounding component 11 is fixedly connected to the other end of the cavity of the protective chamber 8. One end of the grounding component 11 passes through the top of the protective housing 1 and is fixedly connected to the inner side wall. A shielded connecting wire 12 is fixedly connected to the output end of the pulse generator 4. A probe assembly 13 is fixedly connected to the other end of the shielded connecting wire 12. A shielding baffle 14 is rotatably connected to the side wall of the protective housing 1. A limiting mechanism is provided between the shielding baffle 14 and the protective housing 1. A control display panel 15 is fixedly connected to the side wall of the shielding baffle 14 through an opening. By using the protective housing 1, the core components such as the signal receiver 3 and the pulse generator 4 are integrated into one unit, forming a relatively independent detection space, which facilitates the transportation, storage and management of the equipment. The U-shaped support plate 2 is used to reasonably arrange the positions of each component, making the internal structure of the device compact, improving the space utilization rate, and avoiding interference between the components. To prevent interference and ensure stable operation of the detection system, a protective chamber 8 and an arc-shaped protective cover 9 are used to protect the UHF planar spiral antenna 10 from external physical damage. Simultaneously, when the arc-shaped protective cover 9 is open, the UHF planar spiral antenna 10 can effectively receive detection signals. A grounding component 11 is used to ground the device, releasing excess charge generated by static electricity and electromagnetic interference, enhancing the electromagnetic shielding effect. A shielded connection line 12 reduces electromagnetic leakage during pulse signal transmission. A shielding baffle 14 can be rotated open and closed; when not in use, it closes to shield against external electromagnetic interference, and when in use, it opens for easy operation of the control display panel 15, simplifying the detection process. A limiting mechanism can fix the opening and closing state of the shielding baffle 14, ensuring the stability of the detection operation and thus improving detection efficiency. This solves the problem that existing high-voltage electrical equipment insulation testing devices lack electromagnetic shielding protection structures, leading to interference with detection accuracy and cumbersome detection processes, hindering rapid detection and affecting the operating efficiency of the power system.

[0032] To achieve rapid switching between the open and closed states of the shielding baffle 14, such as Figure 1 and 3As shown, the limiting mechanism includes a positioning plate 16, a positioning port 17, a limiting port 18, a limiting rod 19, a spring 20, and an adjusting groove 21. The positioning plate 16 is fixedly connected to the side wall of the shielding baffle 14. A positioning port 17 is opened at one end of the side wall of the protective box 1, and the positioning plate 16 is engaged with the positioning port 17. A limiting port 18 is opened on the side wall of the positioning plate 16. A limiting rod 19 is slidably connected to one end of the side wall cavity of the protective box 1. A spring 20 is fixedly connected to one end of the limiting rod 19, and the other end of the limiting rod 19 is connected to the limiting port 18. 8. An adjustment groove 21 is provided on the surface of the protective housing 1. The positioning plate 16 is engaged with the positioning port 17 to initially determine the position of the shielding baffle 14. The limiting rod 19 is inserted into the limiting port 18 under the elastic force of the spring 20 to firmly limit the shielding baffle 14 and prevent it from shaking during the test and affecting the operation. The limiting rod 19 can be easily pulled by the adjustment groove 21 to realize the quick switching of the opening and closing state of the shielding baffle 14. The operation is simple and convenient, which greatly improves the efficiency of test preparation.

[0033] To resist interference from complex external electromagnetic environments, such as Figure 2 As shown, the protective enclosure 1 includes a high-frequency shielding outer layer 22 and a low-frequency shielding inner layer 23. A conductive gel filling layer 24 is fixedly connected between the high-frequency shielding outer layer 22 and the low-frequency shielding inner layer 23. The high-frequency shielding outer layer 22 effectively blocks high-frequency electromagnetic interference signals, while the low-frequency shielding inner layer 23 protects against low-frequency electromagnetic interference. The conductive gel filling layer 24 fills the gap between the two layers, eliminating gaps between the shielding layers, enhancing the integrity and sealing of the shielding layers, and forming a multi-layer composite electromagnetic shielding structure. This structure comprehensively resists interference from complex external electromagnetic environments and significantly improves the detection accuracy of the detection device.

[0034] To enhance the electromagnetic shielding performance and electrical safety of the device, such as Figure 2 As shown, the grounding component 11 includes a grounding wire 25, and a grounding rod head 26 is fixedly connected to the other end of the grounding wire 25. The grounding wire 25 is used to connect the device to the earth, and the grounding rod head 26 increases the grounding contact area and reduces the grounding resistance, ensuring that the static electricity and electromagnetic interference charges generated by the device can be quickly and stably conducted to the earth, further enhancing the electromagnetic shielding performance and electrical safety of the device.

[0035] To improve detection accuracy, such as Figure 1 , 2As shown in Figure 4, the probe assembly 13 includes a contact coupling probe 27. A gel guide head 28 is fixedly connected to the output end of the contact coupling probe 27, and a polishing disc 29 is fixedly connected to the side wall of the contact coupling probe 27. The contact coupling probe 27 can directly contact high-voltage electrical equipment to efficiently acquire insulation detection signals. The gel guide head 28 has good conductivity and coupling performance, reducing signal transmission loss and ensuring the accuracy of the detection signal. The polishing disc 29 can polish the surface of the equipment to be tested before testing, removing oxide layers, dirt, etc., so that the contact coupling probe 27 can be tightly attached to the surface of the equipment, improving signal acquisition quality and enhancing detection efficiency and accuracy.

[0036] To provide a storage location for the contact coupling probe 27, such as Figure 1 and 2 As shown, a protective socket 30 is fixedly connected inside the cavity of the protective chamber 8. The protective socket 30 is plugged into the contact coupling probe 27. The protective socket 30 provides a storage location for the contact coupling probe 27, preventing it from being damaged by collisions, wear and other factors when not in use. At the same time, the plug-in connection method facilitates the quick installation and removal of the contact coupling probe 27, saving detection operation time and improving detection efficiency.

[0037] To make the opening and closing operation of the shielding baffle 14 more convenient, such as Figure 1 and 3 As shown, one end of the limiting rod 19 passes through the adjusting slide 21, and the other end is fixedly connected to a lever 31. By using the lever 31 to increase the operating area, the testing personnel can easily control the insertion and removal of the limiting rod 19 by moving the lever 31 without the need for additional tools, making the opening and closing of the shielding baffle 14 more convenient and labor-saving, and further improving the convenience and efficiency of the testing operation.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An apparatus for insulation testing of high-voltage electrical equipment, comprising a protective enclosure (1), characterized in that, A U-shaped support plate (2) is fixedly connected between the two ends of the cavity of the protective box (1). A signal receiver (3) is fixedly connected to one end of the top of the U-shaped support plate (2). A pulse generator (4) is fixedly connected to the other end of the top of the U-shaped support plate (2). A power module (5) is fixedly connected to one end of the bottom of the cavity of the protective box (1). A data processing module (6) is fixedly connected to the other end of the bottom of the cavity of the protective box (1). A connection compartment (7) is fixedly connected to the side wall of the protective box (1). The top of the protective housing (1) is fixedly connected to a protective chamber (8), and the side wall of the protective chamber (8) is rotatably connected to an arc-shaped protective cover (9). One end of the cavity of the protective chamber (8) is fixedly connected to a UHF planar spiral antenna (10), and the other end of the cavity of the protective chamber (8) is fixedly connected to a grounding component (11). One end of the grounding component (11) passes through the top of the protective housing (1) and is fixedly connected to the inner side wall. The output end of the pulse generator (4) is fixedly connected to a shielded connection line (12), and the other end of the shielded connection line (12) is fixedly connected to a probe component (13). The side wall of the protective housing (1) is rotatably connected to a shielding baffle (14), and a limiting mechanism is provided between the shielding baffle (14) and the protective housing (1). The side wall of the shielding baffle (14) is fixedly connected to a control display panel (15) through an opening.

2. The apparatus for insulation testing of high-voltage electrical equipment according to claim 1, characterized in that, The limiting mechanism includes a positioning plate (16), a positioning port (17), a limiting port (18), a limiting rod (19), a spring (20), and an adjusting groove (21). The side wall of the shielding baffle (14) is fixedly connected to the positioning plate (16). One end of the side wall of the protective box (1) is provided with a positioning port (17). The positioning plate (16) is engaged with the positioning port (17). The side wall of the positioning plate (16) is provided with a limiting port (18). One end of the side wall cavity of the protective box (1) is slidably connected to a limiting rod (19). One end of the limiting rod (19) is fixedly connected to a spring (20). The other end of the limiting rod (19) is inserted into the limiting port (18). The surface of the protective box (1) is provided with an adjusting groove (21).

3. The apparatus for insulation testing of high-voltage electrical equipment according to claim 1, characterized in that, The protective enclosure (1) includes a high-frequency shielding outer layer (22) and a low-frequency shielding inner layer (23), and a conductive gel filling layer (24) is fixedly connected between the high-frequency shielding outer layer (22) and the low-frequency shielding inner layer (23).

4. The apparatus for insulation testing of high-voltage electrical equipment according to claim 1, characterized in that, The grounding assembly (11) includes a grounding wire (25), and the other end of the grounding wire (25) is fixedly connected to a grounding rod head (26).

5. The apparatus for insulation testing of high-voltage electrical equipment according to claim 1, characterized in that, The probe assembly (13) includes a contact coupling probe (27), the output end of which is fixedly connected to a gel guide head (28), and the side wall of the contact coupling probe (27) is fixedly connected to a polishing disc (29).

6. The apparatus for insulation testing of high-voltage electrical equipment according to claim 1, characterized in that, The protective chamber (8) is fixedly connected to a protective socket (30), which is plugged into a contact coupling probe (27).

7. The apparatus for insulation testing of high-voltage electrical equipment according to claim 2, characterized in that, One end of the limiting rod (19) passes through the adjusting slide (21), and the other end is fixedly connected to a lever (31).

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