A switch cabinet insulating piece performance quality detection test tool

Abstract

This invention provides a testing fixture for the performance and quality inspection of switchgear insulation components. It includes a lifting platform, an insulating plate, a high-voltage copper busbar, and a fixed copper busbar assembly. The lifting platform comprises a platform surface and a support frame. The high-voltage copper busbar is mounted on the top of the support frame via the insulating plate. One end of the fixed copper busbar assembly is detachably connected to the high-voltage copper busbar via bolts. The fixed copper busbar assembly includes components corresponding to different types of insulation components under test, and multiple fixed copper busbar assemblies are included for the same type of insulation component under test, connected simultaneously to the high-voltage copper busbar via bolts, thus meeting the simultaneous testing requirements of multiple insulation components. The adaptability design of the fixed copper busbar assembly to the types of insulation components under test, and the detachable connection between the fixed copper busbar assembly and the high-voltage copper busbar, meet the requirements for simultaneous testing of multiple insulation components under test, improving the testing efficiency of insulation components.

Description

Technical Field

[0001] This invention relates to the field of electrical testing technology, and in particular to a testing fixture for detecting the performance and quality of switchgear insulation components. Background Technology

[0002] Insulating components in switchgear, such as post insulators, bushings, and contact boxes, are crucial for ensuring the safe and stable operation of switchgear equipment. Operational experience shows that the primary cause of switchgear failures is insulation component failure. During switchgear operation, insulating components gradually age due to factors such as temperature, humidity, and surface contamination, frequently leading to abnormal overheating, breakdown, and breakage, seriously threatening the safe and stable operation of the power grid. Therefore, conducting factory inspections and grid connection tests on switchgear insulating components to ensure their electrical performance quality before equipment commissioning is of paramount importance.

[0003] In related technologies, insulation performance testing is often conducted after the insulating components are installed on the switchgear. If the insulation performance of the insulating component fails to meet the requirements, it must be disassembled and a new insulating component must be reinstalled before the insulation performance test is performed again. Furthermore, traditional switchgear insulation performance testing can only test one insulating component at a time. This operation is not only cumbersome and inefficient, but also consumes a significant amount of manpower and resources for disassembly and reassembly. Summary of the Invention

[0004] This invention provides a testing fixture for the performance and quality testing of switchgear insulation components to solve the problem of low testing efficiency. The testing fixture includes: an insulation plate 1, a lifting platform 2, a high-voltage copper busbar 3, and a fixed copper busbar assembly 4; wherein the lifting platform 2 includes: a lifting platform surface 201 and a lifting platform support frame 202;

[0005] The high-voltage copper busbar 3 is installed at the top of the lifting platform support frame 202 via an insulating plate 1;

[0006] One end of the fixed copper busbar assembly 4 is detachably connected to the high-voltage copper busbar 3 via bolts; wherein, the fixed copper busbar assembly 4 includes fixed copper busbar assemblies 4 corresponding to different types of insulation components to be tested, and multiple fixed copper busbar assemblies 4 are included for the same type of insulation component to be tested, so as to be connected to the high-voltage copper busbar 3 simultaneously via bolts, thereby satisfying the simultaneous testing of multiple insulation components to be tested.

[0007] In one possible implementation, the fixed copper busbar assembly (4) includes a plurality of fixed copper busbars I (41) and fixed copper busbars II (42);

[0008] The fixed copper busbar I (41) is L-shaped, including a vertical section and a horizontal section;

[0009] The top of the vertical section of the fixed copper busbar I (41) is detachably connected to the high-voltage copper busbar (3) by bolts; the horizontal section of the fixed copper busbar I (41) is detachably connected to the post insulator to be tested by bolts.

[0010] The fixed copper busbar II (42) is placed on the lifting platform (201). The fixed copper busbar II (42) is provided with copper studs and is fixedly connected to the post insulator to be tested through the copper studs.

[0011] In one possible implementation, the fixed copper busbar assembly 4 includes a plurality of fixed copper busbars Ⅲ43; the switch cabinet insulation component performance quality testing fixture further includes: a fixing plate Ⅰ5 used in conjunction with the fixed copper busbars Ⅲ43;

[0012] The fixing plate I5 is placed vertically on the lifting platform 201 and is connected to the contact box to be tested by bolts.

[0013] One end of the fixed copper busbar Ⅲ43 is detachably connected to the high-voltage copper busbar 3 by bolts, and the other end is connected to the contact box to be tested.

[0014] In one possible implementation, the fixed copper busbar assembly 4 includes a plurality of fixed copper busbars IV 44; the switch cabinet insulation component performance quality testing fixture further includes: a fixing plate II 6 used in conjunction with the fixed copper busbars IV 44;

[0015] The tube to be tested is placed vertically on the lifting platform 201, and the fixing plate II6 is inserted into the tube to be tested and fixed by bolts.

[0016] One end of the fixed copper busbar IV44 is detachably connected to the high-voltage copper busbar 3 by bolts, and the other end is aligned with the center hole of the through-cabinet sleeve.

[0017] The sleeve to be tested is fitted onto the fixed copper busbar IV44 as the height of the lifting platform 201 is adjusted.

[0018] In one possible implementation, the lifting platform 201 is provided with a plurality of circular recessed hole structures for placing the insulating component to be tested.

[0019] Multiple test tubes are placed one by one in the circular concave hole structure.

[0020] In one possible implementation, the number of circular recessed holes on the lifting platform 201 is 3.

[0021] In one possible implementation, the lifting platform 201 has rectangular holes at the center of each circular concave hole structure.

[0022] The area of ​​the rectangular hole is greater than or equal to the cross-sectional area of ​​the fixed copper busbar IV44.

[0023] In one possible implementation, the lifting platform 2 further includes: a lifting mechanism 203, a lead screw 204, a servo motor 205, a reducer 206, a coupling 207, a connecting rod I 208, a connecting rod II 209, a controller 210, and a pulley 211;

[0024] The servo motor 205 is fixedly connected to the reducer 206 by bolts; the coupling 207 is fixedly connected to the reducer 206 by bolts; the connecting rod I 208 and the connecting rod II 209 are fixedly connected to the lifting platform 203 by bolts via the coupling 207; the controller 210 is fixedly connected to the lifting platform support frame 202 by bolts; the pulley 211 is fixedly connected to the lower end of the lifting platform support frame 202 by bolts; and the lifting platform 203 adjusts the height of the lifting platform 201 by moving up and down via the lead screw 204.

[0025] In one possible implementation, the pulley 211 is a fuma wheel, which can not only achieve free movement, but also has good load-bearing capacity, and can also fix the equipment after it is in place.

[0026] In one possible implementation, the switchgear insulation component performance quality testing fixture further includes: handwheel 7, lever 8, lead screw 9, slide table 10, scale 11, connecting plate 12, nylon insulator 13, equalizing ring 14, fixture box 15, copper busbar pad 16, and copper busbar clamp 17.

[0027] The handwheel 7 is fixedly connected to the lifting platform support frame 202 by bolts; the slide 10 is fixedly connected to the connecting plate 12 by bolts; rotating the handwheel 7 causes the slide 10 to slide left and right via the lead screw 9.

[0028] The scale 11 is fixedly connected to the lead screw 9 by bolts; the upper end of the nylon insulator 13 is fixedly connected to the connecting plate 12 by bolts; the lower end of the nylon insulator 13 is fixedly connected to the insulating plate 1 by bolts; the equalizing ring 14 is fixedly connected to the high-voltage copper busbar 3 by bolts; the tooling box 15 has an opening on the side for taking out and storing the tooling; the copper busbar pad 16 is fixedly connected to the high-voltage copper busbar 3 by bolts; the copper busbar clamp 17 is fixedly connected to the insulating plate 1 by bolts.

[0029] In one possible implementation, the controller 210 includes a control button 210A; the controller 210 controls the servo motor 205 to drive the reducer 206 to work through the control button 210A, thereby achieving steady speed lifting.

[0030] In one possible implementation, the scale 11 is 1 meter long, which is convenient for adjusting the size reference when adjusting the distance of the insulating component to be measured.

[0031] In one possible implementation, the insulating plate 1 has a groove structure design on both the upper and lower surfaces.

[0032] In one possible implementation, the high-voltage copper busbar 3 is provided with a plurality of rounded rectangular holes.

[0033] In one possible implementation, the high-voltage copper busbar 3 has three rounded rectangular holes evenly distributed on it.

[0034] The present invention has a reasonable structure, strong functionality, and the following advantages:

[0035] (1) The upper and lower surfaces of the insulating board are designed with grooves, which increases the creepage distance, effectively isolates the tooling support frame from the high voltage live parts, and reduces the overall weight of the tooling and reduces the mechanical strength requirements of the support frame.

[0036] (2) The high-voltage copper busbar has multiple rounded rectangular holes evenly distributed, which reduces the weight of the tooling, saves costs, and facilitates distance adjustment. In addition, it can adapt to copper busbar installation and pressure testing of insulation components of different manufacturers and sizes.

[0037] (3) By installing equalizing rings at both ends of the high voltage copper busbar, the electric field distortion at the end of the tooling during the high voltage application process can be effectively reduced, the electromagnetic interference caused by the corona generated by the tooling itself during the test can be reduced, and the defects of the insulation component under test can be accurately detected.

[0038] (4) Adjust the height of the lifting platform through the controller to accommodate samples from different manufacturers and of different sizes, so as to facilitate placement and fixation before the test;

[0039] (5) The high-voltage copper busbar is moved left and right by rotating the handle to adjust the horizontal distance with the lifting platform. Simultaneously, insulation performance tests can be performed on insulation components of three similar switchgear units, and the disassembly and installation process is convenient and quick. Depending on the differences in the insulation components to be tested, only the corresponding fixing copper busbar and fixing plate need to be replaced to achieve efficient and convenient testing. This saves manpower and resources while improving testing efficiency.

[0040] Therefore, by designing a test fixture with three adjustable degrees of freedom (up / down, left / right, and forward / backward), the testing needs of switchgear insulation components from different manufacturers and of different sizes can be met. This design achieves the goal of simultaneously conducting insulation performance tests on multiple post insulators, bushings, contact boxes, and other switchgear insulation components. Furthermore, it simplifies the process of fixing test samples and applying voltage, significantly improving testing efficiency while reducing electromagnetic interference caused by electric field distortion in the test fixture. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of a test fixture for testing the performance and quality of switchgear insulation components according to an embodiment of this application;

[0043] Figure 2 A partially enlarged view of the test fixture structure for testing the performance and quality of switchgear insulation components provided in an embodiment of this application;

[0044] Figure 3 This is an enlarged view of the high-voltage copper busbar and accessories provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of an insulating plate structure provided in an embodiment of this application;

[0046] Figure 5 A schematic diagram of the structure of the test fixture for testing the insulation performance of the contact box of a switchgear insulation component according to an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of the structure of a switchgear insulation component performance quality testing fixture provided in an embodiment of this application for testing the insulation performance of bushings passing through the cabinet;

[0048] In the attached figures, the following labels are used:

[0049] Insulating plate 1, lifting platform 2, high voltage copper busbar 3, fixed copper busbar assembly 4, fixed plate I 5, fixed plate II 6, handwheel 7, lever 8, lead screw 9, slide table 10, scale 11, connecting plate 12, nylon insulator 13, equalizing ring 14, tooling box 15, copper busbar pad 16, copper busbar clamp 17, lifting platform surface 201, lifting platform support frame 202, lifting machine 203, lead screw 204, servo motor 205, reducer 206, coupling 207, connecting rod I 208, connecting rod II 209, controller 210, control button 210A, pulley 211, fixed copper busbar I 41, fixed copper busbar II 42, fixed copper busbar III 43, fixed copper busbar IV 44. Detailed Implementation

[0050] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0051] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0052] The implementation of the present invention will be described in detail below with reference to the accompanying drawings:

[0053] This invention provides a test fixture for testing the performance and quality of switchgear insulation components, comprising: an insulation plate 1, a lifting platform 2, a high-voltage copper busbar 3, and a fixed copper busbar assembly 4; wherein the lifting platform 2 comprises: a lifting platform surface 201 and a lifting platform support frame 202;

[0054] The high-voltage copper busbar 3 is installed at the top of the lifting platform support frame 202 via the insulating plate 1;

[0055] One end of the fixed copper busbar assembly 4 is detachably connected to the high-voltage copper busbar 3 via bolts; wherein, the fixed copper busbar assembly 4 includes fixed copper busbar assemblies 4 corresponding to different types of insulation components to be tested, and multiple fixed copper busbar assemblies 4 are included for the same type of insulation component to be tested, so as to be connected to the high-voltage copper busbar 3 at the same time via bolts, so as to meet the simultaneous testing of multiple insulation components to be tested.

[0056] In this embodiment, the high-voltage copper busbar 3 is mounted on the top of the lifting platform support frame 202 via an insulating plate 1. This serves two purposes: firstly, it provides space between the high-voltage copper busbar 3 and the lifting platform surface 201 for placing the insulating component to be tested, thus enabling testing of the component. In practice, the lifting platform surface 201 is adjusted to accommodate the testing requirements of different insulating components. Secondly, it satisfies the insulation requirements between the high-voltage copper busbar 3 and the lifting platform support frame 202.

[0057] One end of the fixed copper busbar assembly 4 is detachably connected to the high-voltage copper busbar 3 via bolts. The fixed copper busbar assembly 4 includes various types suitable for different types of insulation components under test. Based on the specific testing requirements of the insulation component type, the corresponding fixed copper busbar assembly 4 is connected to the high-voltage copper busbar 3, and the insulation component under test is fixed through the other end of the fixed copper busbar assembly 4. Furthermore, multiple fixed copper busbar assemblies 4 are included for the same type of insulation component under test, allowing simultaneous connection to the high-voltage copper busbar 3 via bolts, facilitating the simultaneous testing of multiple insulation components. This design facilitates assembly and disassembly, significantly improving testing efficiency.

[0058] In a specific embodiment, the tooling provided in this embodiment can meet the insulation performance testing requirements of high-voltage switchgear post insulators, contact boxes, and bushings. See also... Figure 1 , Figure 5 and Figure 6 The test examples for the corresponding post insulators, contact boxes, and bushings are shown respectively.

[0059] Figure 1 This is a schematic diagram of a test fixture for detecting the performance and quality of switchgear insulation components, provided in one embodiment of this application. It is specifically used for testing the insulation performance of post insulators. Figure 1 As shown, the fixed copper busbar assembly 4 includes multiple fixed copper busbars I 41 and fixed copper busbars II 42;

[0060] The fixed copper busbar I41 is L-shaped, including a vertical section and a horizontal section;

[0061] The top of the vertical section of the fixed copper busbar I41 is detachably connected to the high-voltage copper busbar 3 by bolts; the horizontal section of the fixed copper busbar I41 is detachably connected to the post insulator to be tested by bolts.

[0062] The fixed copper busbar II 42 is placed on the lifting platform 201. The fixed copper busbar II 42 is equipped with copper studs and is fixedly connected to the post insulator to be tested through the copper studs.

[0063] Among them, the fixed copper busbar I41 is L-shaped, and its design, which includes vertical and horizontal sections, is intended to meet the usage requirements of electrical equipment and ensure the safety and stability of the equipment.

[0064] In one possible embodiment, the horizontal section of the fixed copper busbar I41 is provided with multiple circular holes to facilitate the passage of bolts for fixed connection with the post insulator to be tested. Optionally, the multiple circular holes can be adapted to different types of post insulators to meet the testing requirements of post insulators produced by different manufacturers or of different specifications.

[0065] The vertical section of the fixed copper busbar I41 is located at the top of the assembly, and its top end is detachably connected to the high-voltage copper busbar 3 by bolts. This connection method allows the fixed copper busbar I41 to be easily installed and removed, facilitating maintenance and replacement. At the same time, this design also ensures the stability and reliability of the vertical section during use.

[0066] Fixed copper busbar II 42 is placed on the lifting platform 201. Copper studs are installed on fixed copper busbar II 42, and the busbar is fixedly connected to the post insulator under test via these studs. This connection method ensures both a secure connection and stable contact between the horizontal section and the post insulator under test. This guarantees that the fixed copper busbar I 41 and the post insulator under test can be placed stably during insulation performance testing, avoiding errors in insulation performance testing due to instability.

[0067] Fixed copper busbar II 42 is an important component of fixed copper busbar I 41, serving the functions of electrical connection and support. Only by ensuring the stability of the horizontal section can the normal operation of the entire fixed copper busbar I 41 and the safe operation of electrical equipment be guaranteed.

[0068] In this embodiment, the design of the fixed copper busbar assembly 4 fully considers the stability and safety of the equipment. Through the L-shaped fixed copper busbar I 41, the detachable connection between the vertical section and the high-voltage copper busbar 3, and the fixed connection between the horizontal section and the insulator under test, the fixed copper busbar II 42 is placed on the lifting platform 201. Copper studs are installed on the fixed copper busbar II 42 and are fixedly connected to the insulator under test through these studs, thus achieving stable operation of the equipment. This design meets the usage requirements while ensuring the safety and reliability of the equipment, providing a strong guarantee for the stable operation of electrical equipment.

[0069] Figure 5 This is a schematic diagram of the structure of a test fixture for testing the insulation performance of a switchgear insulation component, provided in one embodiment of this application. Figure 5 As shown, the fixed copper busbar assembly 4 includes multiple fixed copper busbars Ⅲ43; a test fixture for testing the performance and quality of switchgear insulation components also includes: a fixing plate Ⅰ5 used in conjunction with the fixed copper busbars Ⅲ43;

[0070] The fixing plate I5 is placed vertically on the lifting platform 201 and connected to the contact box to be tested by bolts;

[0071] One end of the fixed copper busbar Ⅲ43 is detachably connected to the high-voltage copper busbar 3 via bolts, and the other end is connected to the contact box to be tested.

[0072] In a specific embodiment, the fixing plate I5 is an iron plate.

[0073] like Figure 5 As shown, in order to maximize the efficiency of the fixed copper busbar assembly 4, the fixture is also equipped with a fixing plate I5 that works in conjunction with the fixed copper busbar III 43. The fixing plate I5 is placed vertically on the lifting platform 201 and is tightly connected to the contact box under test by bolts, ensuring the stability of the entire test fixture.

[0074] During insulation performance testing, one end of the fixed copper busbar III 43 is detachably connected to the high-voltage copper busbar 3 via bolts. This design allows the fixed copper busbar III 43 to be flexibly connected and disconnected from the high-voltage copper busbar 3, facilitating the installation and removal of the testing fixture. The other end is connected to the contact box under test, forming a complete electrical connection path.

[0075] In this embodiment, the fixed copper busbar assembly 4, the fixed plate I5, and their connection to the high-voltage copper busbar 3 and the contact box under test together constitute the core part of a test fixture for testing the performance and quality of switchgear insulation components. Their seamless cooperation ensures the efficient operation of the test fixture, providing a reliable guarantee for testing the insulation performance of the switchgear.

[0076] Figure 6 This is a schematic diagram of a structure for testing the insulation performance of a bushing in a switchgear, as provided in an embodiment of this application. Figure 6 As shown, the fixed copper busbar assembly 4 includes multiple fixed copper busbars IV44; a test fixture for testing the performance and quality of switchgear insulation components also includes: a fixing plate II6 used in conjunction with the fixed copper busbars IV44;

[0077] The sleeve to be tested is placed vertically on the lifting platform 201, and the fixing plate II6 is inserted into the sleeve to be tested and fixed by bolts.

[0078] One end of the fixed copper busbar IV44 is detachably connected to the high-voltage copper busbar 3 via bolts, and the other end is aligned with the center hole of the through-cabinet bushing.

[0079] The sleeve to be tested is fitted onto the outside of the fixed copper busbar Ⅳ44 as the height of the lifting platform 201 is adjusted.

[0080] During the insulation performance test, firstly, the bushing to be tested needs to be placed vertically on the lifting platform 201. Next, the fixing plate II6 is fitted onto the bushing and secured with bolts. This step ensures the stability and safety of the bushing under test.

[0081] Next, one end of the fixed copper busbar IV44 is detachably connected to the high-voltage copper busbar 3 via bolts. This design allows the fixed copper busbar IV44 to be flexibly connected to the high-voltage copper busbar 3 to meet testing requirements. The other end is aligned with the center hole of the through-cabinet bushing to ensure accurate connection.

[0082] Finally, the sleeve to be tested is fitted onto the outside of the fixed copper busbar Ⅳ44 as the height of the lifting platform 201 is adjusted, ensuring the stability and safety of the sleeve during the test.

[0083] In this embodiment, the use of the fixed copper busbar assembly 4 in a test fixture for evaluating the performance and quality of switchgear insulation components includes a fixing plate II 6 used in conjunction with the fixed copper busbar IV 44, vertical placement of the bushing to be tested, a detachable connection between the fixed copper busbar IV 44 and the high-voltage copper busbar 3, and height adjustment of the lifting platform 201. This solution fully demonstrates the flexibility and efficiency of the assembly, providing a reliable guarantee for the insulation performance testing of switchgear.

[0084] comprehensive Figure 1 , Figure 5 and Figure 6 Based on the comparative analysis of the above embodiments, it can be seen that the fixed copper busbar assembly 4 includes a variety of fixed copper busbar assemblies 4 corresponding to different types of insulation components to be tested. In addition, in order to ensure the stability of the insulation component to be tested during the testing process, corresponding fixing components are provided for use.

[0085] The design of the fixed copper busbar assembly 4 fully considers the type and characteristics of the insulation component under test to meet the needs of various scenarios. The multiple configurations of the fixed copper busbar assembly 4 make the testing process more flexible and diverse, allowing for precise adjustment and testing of different types of insulation components. Furthermore, the accompanying fasteners greatly improve the stability during the testing process, ensuring the accuracy of the test results.

[0086] comprehensive Figure 1 , Figure 5 and Figure 6 Through comparative analysis of the illustrated embodiments, we can see that the design of the fixed copper busbar assembly 4 fully considers the type and characteristics of the insulation component under test to meet the needs of various scenarios. Firstly, the multiple fixed copper busbar assemblies 4 make the testing process more flexible and diverse, allowing for precise adjustment and testing of different types of insulation components. Secondly, the fixed copper busbar assembly 4 has a simple structure, is easy to install and adjust, and reduces the difficulty of use. Finally, the accompanying fixing components ensure the stability of the insulation component under test during the test, avoiding errors in insulation test results caused by component movement.

[0087] In one possible implementation, the lifting platform 201 is provided with multiple circular recessed structures for placing the insulating components to be tested; multiple through-cabinet bushings to be tested are placed one by one in the circular recessed structures.

[0088] The lifting platform 201 has multiple circular recessed holes to meet various requirements. Figure 6 The insulation testing application requirements for the bushing shown are as follows. The circular concave hole structure facilitates the rapid placement of the bushing under test, achieving precise positioning, while also ensuring the stable placement of the bushing.

[0089] Optionally, the number of circular recessed holes on the lifting platform 201 is 2 to 10. In one possible implementation, the number of circular recessed holes on the lifting platform 201 is 3.

[0090] The design of having three circular recessed holes on the lifting platform 201 balances efficiency and practicality. In actual implementation, the number of circular recessed holes should be neither too many nor too few. Multiple circular recessed holes can meet the simultaneous testing needs of multiple bushings under test, improving testing efficiency. However, too many circular recessed holes may cause some problems. First, too many circular recessed holes will increase the overall size and cost of the fixture. This is because each recessed hole requires a certain manufacturing and maintenance cost, and the more there are, the higher the cost. Second, too many circular recessed holes may affect the accuracy of insulation performance test results. Because the distance between the bushings under test is too close, it may cause mutual interference during testing, thus affecting the accuracy of the test results.

[0091] On the other hand, having too few circular recessed holes can also cause problems. If there are too few recessed holes, it may not be able to meet the simultaneous testing requirements of multiple sleeves to be tested, thus reducing testing efficiency.

[0092] In this embodiment, the number of circular recessed hole structures on the lifting platform 201 is 3, which satisfies the simultaneous testing requirements of multiple tubes to be tested through the cabinet, while avoiding problems caused by too many or too few recessed hole structures.

[0093] In practical applications, within the budget, the number of circular recessed structures can be adjusted according to specific circumstances to achieve efficient and accurate testing results. Simultaneously, the distance between the circular recessed structures is also considered to improve the accuracy of insulation performance test results.

[0094] In one possible implementation, the lifting platform 201 has rectangular holes at the center of each circular concave hole structure; the area of ​​the rectangular holes is greater than or equal to the cross-sectional area of ​​the fixed copper busbar Ⅳ44.

[0095] The lifting platform 201 has rectangular holes, primarily to facilitate the insertion of the fixed copper busbar IV44 through these holes during the testing process. Simultaneously, to ensure that the fixed copper busbar IV44 coincides with the central axis of the sleeve to be tested, the rectangular holes are positioned at the center of the circular recessed hole structure.

[0096] It is worth noting that the area of ​​the rectangular hole must be greater than or equal to the cross-sectional area of ​​the fixed copper busbar IV44. This design ensures that the fixed copper busbar IV44 will not experience blockage or other problems when passing through the rectangular hole due to its small diameter. Furthermore, this design can improve the accuracy and efficiency of testing while maintaining equipment performance.

[0097] In practice, the sleeve to be tested is first placed on the lifting platform 201, and then the fixed copper busbar IV44 is passed through the corresponding rectangular hole. Next, the height of the lifting platform 201 is adjusted so that the fixed copper busbar IV44 coincides with the central axis of the sleeve to be tested. During this process, the position of the fixed copper busbar IV44 in the rectangular hole can be observed to determine whether the expected alignment has been achieved.

[0098] In this embodiment, by opening a rectangular hole on the lifting platform 201, precise control can be achieved to ensure that the fixed copper busbar IV44 and the central axis of the sleeve to be tested are aligned, which simplifies the testing process and improves the accuracy and efficiency of the test.

[0099] In one possible implementation, the lifting platform 2 further includes: a lifting mechanism 203, a lead screw 204, a servo motor 205, a reducer 206, a coupling 207, a connecting rod I 208, a connecting rod II 209, a controller 210, and a pulley 211.

[0100] Among them, the servo motor 205 is fixedly connected to the reducer 206 by bolts; the coupling 207 is fixedly connected to the reducer 206 by bolts; the connecting rod I 208 and the connecting rod II 209 are fixedly connected to the lifting platform 203 by bolts through the coupling 207; the controller 210 is fixedly connected to the lifting platform support frame 202 by bolts; the pulley 211 is fixedly connected to the lower end of the lifting platform support frame 202 by bolts; the lifting platform 203 adjusts the height of the lifting platform 201 by moving up and down through the lead screw 204.

[0101] In this embodiment, a specific structure of the lifting platform 2 is provided, which works in conjunction with the lifting platform surface 201 and the lifting platform support frame 202 described in the previous embodiment to complete the testing of the insulating component to be tested.

[0102] In one possible implementation, pulley 211 is a fuma wheel, which can not only achieve free movement, but also has good load-bearing capacity, and can also fix the equipment in place.

[0103] In one possible implementation, a test fixture for testing the performance and quality of switchgear insulation components further includes: a handwheel 7, a lever 8, a lead screw 9, a slide table 10, a scale 11, a connecting plate 12, a nylon insulator 13, an equalizing ring 14, a fixture box 15, a copper busbar pad 16, and a copper busbar clamp 17.

[0104] The handwheel 7 is fixedly connected to the lifting platform support frame 202 by bolts; the slide 10 is fixedly connected to the connecting plate 12 by bolts; the slide 10 is driven to slide left and right by rotating the handwheel 7 through the lead screw 9.

[0105] The scale 11 is fixedly connected to the lead screw 9 by bolts; the upper end of the nylon insulator 13 is fixedly connected to the connecting plate 12 by bolts; the lower end of the nylon insulator 13 is fixedly connected to the insulating plate 1 by bolts; the equalizing ring 14 is fixedly connected to the high-voltage copper busbar 3 by bolts; the tooling box 15 has an opening on the side for the tooling to be taken out and put away; the copper busbar pad 16 is fixedly connected to the high-voltage copper busbar 3 by bolts; the copper busbar clamp 17 is fixedly connected to the insulating plate 1 by bolts.

[0106] The handwheel 7 is fixedly connected to the lifting platform support frame 202 by bolts; the slide table 10 is fixedly connected to the connecting plate 12 by bolts. By rotating the handwheel 7, the slide table 10 is driven to slide left and right through the screw 9 to adjust the horizontal distance between the fixed copper busbar and the insulating component to be tested.

[0107] The scale 11 is fixedly connected to the lead screw 9 by bolts, which provides a dimensional reference when adjusting the distance of the insulation component under test. The upper end of the nylon insulator 13 is fixed to the connecting plate 12, and the lower end is fixed to the insulation plate 1 by bolts, which is suitable for fixing the copper busbar to meet the load-bearing requirements when testing different insulation components.

[0108] The equalizing ring 14 is fixedly connected to the high-voltage copper busbar 3 by bolts. The equalizing ring has openings in both the horizontal and vertical directions to facilitate the installation of high-voltage lines in different directions during testing. This design effectively reduces the electric field distortion at the end of the fixture when high voltage is applied, reduces electromagnetic interference caused by corona discharge generated by the fixture itself during the test, and ensures that defects in the insulation component under test can be effectively detected.

[0109] The copper busbar pad 16 is fixedly connected to the high-voltage copper busbar 3 by bolts, which serves to support and reinforce the high-voltage copper busbar, and also reduces the overall weight of the tooling.

[0110] In one possible implementation, the controller 210 includes a control button 210A; the controller 210 controls the servo motor 205 to drive the reducer 206 through the control button 210A to achieve steady-speed lifting. The controller 210 controls the servo motor 205 to drive the elevator 203 to move up and down through the control button 210A, thereby adjusting the height of the lifting platform 10 to accommodate insulating components of different sizes.

[0111] In one possible implementation, the scale 11 is 1 meter long, which facilitates providing a dimensional reference when adjusting the distance of the insulating component to be measured.

[0112] In one possible implementation, the insulating plate 1 has a grooved structure on both its upper and lower surfaces. This design increases the creepage distance, enabling effective electrical isolation between the tooling support frame and the high-voltage live parts, while also reducing the weight of the tooling and lowering the mechanical strength requirements for the support frame.

[0113] In one possible implementation, the high-voltage copper busbar 3 has multiple rounded rectangular holes. The design of the rounded rectangular holes reduces the weight of the tooling, saves costs, facilitates distance adjustment, and can accommodate copper busbar installation and pressure testing of insulating components from different manufacturers and of different sizes.

[0114] In one possible implementation, the high-voltage copper busbar 3 has three rounded rectangular holes evenly distributed on it.

[0115] Based on the specific structure of the lifting platform provided in the above embodiments, the specific testing process for the insulating component to be tested is as follows:

[0116] Example 1, such as Figure 1 As shown, the horizontal section of the fixed copper busbar I41 is placed on the lifting platform 201. The height of the lifting platform 201 is adjusted by the controller to determine the position of the center hole of the post insulator. The bottom of the post insulator is fixedly connected to the post insulator by the copper studs integrated with the horizontal section of the fixed copper busbar I41. Rotating the handwheel 7 moves the high-voltage copper busbar 3 left and right, adjusting the fixed copper busbar 3 to align with the center hole at the top of the post insulator and fixing it with bolts. A 35kV high voltage is applied, and the high-voltage line is connected to the equalizing ring 14 by bolts, grounding the horizontal section of the fixed copper busbar I41. This allows for simultaneous insulation performance testing of three post insulators of the same type, and the assembly and disassembly are convenient and quick, improving testing efficiency.

[0117] Example 2, as Figure 5 As shown, the fixing plate I5 is placed vertically on the lifting platform 201. The contact box is fixedly connected to the fixing plate I5 with bolts. Turning the handwheel 7 moves the high-voltage copper busbar 3 left and right, adjusting the fixing copper busbar III 43 to align with the center hole of the contact box. The height of the lifting platform 201 is adjusted via the controller 210 to finally determine the position of the center hole of the contact box. A 35kV high voltage is applied, and the high-voltage line is connected to the equalizing ring 14 with bolts, grounding the fixing plate I5. This allows for simultaneous insulation performance testing of three contact boxes of the same type, and the process is convenient and quick, improving testing efficiency.

[0118] Example 3, as Figure 6As shown, the bushing is placed in the circular recessed structure of the lifting platform 201. The fixing plate II6 is then fitted onto the bushing, and the fixing plate II6 is fixed to the bushing with bolts. The handwheel 7 is rotated to move the high-voltage copper busbar 3 left and right, adjusting the fixing copper busbar IV44 to align with the center hole of the bushing. The height of the lifting platform 201 is adjusted using the controller to finally determine the position of the center hole of the bushing, simulating the actual working conditions of the bushing. A 35kV high voltage is applied, and the high-voltage line is connected to the equalizing ring 14 with bolts, grounding the fixing plate II6. This allows for simultaneous insulation performance testing of three bushings of the same type, and the process is convenient and quick, improving testing efficiency.

[0119] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A testing fixture for the performance and quality inspection of switchgear insulation components, characterized in that, include: An insulating plate (1), a lifting platform (2), a high-voltage copper busbar (3), and a fixed copper busbar assembly (4); wherein, the lifting platform (2) includes: a lifting platform surface (201) and a lifting platform support frame (202); the high-voltage copper busbar (3) is set at the top of the lifting platform support frame (202) through the insulating plate (1); one end of the fixed copper busbar assembly (4) is detachably connected to the high-voltage copper busbar (3) by bolts; wherein, the fixed copper busbar assembly (4) includes fixed copper busbar assemblies (4) corresponding to different types of insulation components to be tested, and multiple fixed copper busbar assemblies (4) are included for the same type of insulation component to be tested, so as to be connected to the high-voltage copper busbar (3) at the same time through bolts, so as to meet the simultaneous testing of multiple insulation components to be tested; The fixed copper busbar assembly (4) includes multiple fixed copper busbars I (41) and fixed copper busbars II (42); the fixed copper busbar I (41) is L-shaped, including a vertical section and a horizontal section; the top of the vertical section of the fixed copper busbar I (41) is detachably connected to the high-voltage copper busbar (3) by bolts; the horizontal section of the fixed copper busbar I (41) is detachably connected to the post insulator to be tested by bolts; the fixed copper busbar II (42) is placed on the lifting platform (201), and copper studs are provided on the fixed copper busbar II (42), and it is fixedly connected to the post insulator to be tested by the copper studs; The switchgear insulation component performance quality testing fixture also includes: a handwheel (7), a lever (8), a lead screw (9), a slide table (10), a scale (11), a connecting plate (12), a nylon insulator (13), an equalizing ring (14), a fixture box (15), copper busbar pads (16), and copper busbar clamps (17); the handwheel (7) is fixedly connected to the lifting platform support frame (202) by bolts; the slide table (10) is fixedly connected to the connecting plate (12) by bolts; by rotating the handwheel (7), the slide table (10) is driven to slide left and right through the lead screw (9). The scale (11) is fixedly connected to the lead screw (9) by bolts; the upper end of the nylon insulator (13) is fixedly connected to the connecting plate (12) by bolts; the lower end of the nylon insulator (13) is fixedly connected to the insulating plate (1) by bolts; the equalizing ring (14) is fixedly connected to the high-voltage copper busbar (3) by bolts; the tooling box (15) has an opening on the side for tooling to be taken out and put away; the copper busbar pad (16) is fixedly connected to the high-voltage copper busbar (3) by bolts; the copper busbar clamp (17) is fixedly connected to the insulating plate (1) by bolts.

2. A switchgear insulation performance quality test device, characterized in that, include: An insulating plate (1), a lifting platform (2), a high-voltage copper busbar (3), and a fixed copper busbar assembly (4); wherein, the lifting platform (2) includes: a lifting platform surface (201) and a lifting platform support frame (202); the high-voltage copper busbar (3) is set at the top of the lifting platform support frame (202) through the insulating plate (1); one end of the fixed copper busbar assembly (4) is detachably connected to the high-voltage copper busbar (3) by bolts; wherein, the fixed copper busbar assembly (4) includes fixed copper busbar assemblies (4) corresponding to different types of insulation components to be tested, and multiple fixed copper busbar assemblies (4) are included for the same type of insulation component to be tested, so as to be connected to the high-voltage copper busbar (3) at the same time through bolts, so as to meet the simultaneous testing of multiple insulation components to be tested; The fixed copper busbar assembly (4) includes multiple fixed copper busbars III (43); the switch cabinet insulation component performance quality testing fixture also includes a fixing plate I (5) used in conjunction with the fixed copper busbar III (43); the fixing plate I (5) is placed vertically on the lifting platform (201) and connected to the contact box to be tested by bolts; one end of the fixed copper busbar III (43) is detachably connected to the high voltage copper busbar (3) by bolts, and the other end is connected to the contact box to be tested; The switchgear insulation component performance quality testing fixture also includes: a handwheel (7), a lever (8), a lead screw (9), a slide table (10), a scale (11), a connecting plate (12), a nylon insulator (13), an equalizing ring (14), a fixture box (15), copper busbar pads (16), and copper busbar clamps (17); the handwheel (7) is fixedly connected to the lifting platform support frame (202) by bolts; the slide table (10) is fixedly connected to the connecting plate (12) by bolts; by rotating the handwheel (7), the slide table (10) is driven to slide left and right through the lead screw (9). The scale (11) is fixedly connected to the lead screw (9) by bolts; the upper end of the nylon insulator (13) is fixedly connected to the connecting plate (12) by bolts; the lower end of the nylon insulator (13) is fixedly connected to the insulating plate (1) by bolts; the equalizing ring (14) is fixedly connected to the high-voltage copper busbar (3) by bolts; the tooling box (15) has an opening on the side for tooling to be taken out and put away; the copper busbar pad (16) is fixedly connected to the high-voltage copper busbar (3) by bolts; the copper busbar clamp (17) is fixedly connected to the insulating plate (1) by bolts.

3. A switchgear insulation performance quality test device, characterized in that, include: An insulating plate (1), a lifting platform (2), a high-voltage copper busbar (3), and a fixed copper busbar assembly (4); wherein, the lifting platform (2) includes: a lifting platform surface (201) and a lifting platform support frame (202); the high-voltage copper busbar (3) is set at the top of the lifting platform support frame (202) through the insulating plate (1); one end of the fixed copper busbar assembly (4) is detachably connected to the high-voltage copper busbar (3) by bolts; wherein, the fixed copper busbar assembly (4) includes fixed copper busbar assemblies (4) corresponding to different types of insulation components to be tested, and multiple fixed copper busbar assemblies (4) are included for the same type of insulation component to be tested, so as to be connected to the high-voltage copper busbar (3) at the same time through bolts, so as to meet the simultaneous testing of multiple insulation components to be tested; The fixed copper busbar assembly (4) includes multiple fixed copper busbars IV (44); the switch cabinet insulation performance quality testing fixture also includes a fixing plate II (6) used in conjunction with the fixed copper busbars IV (44); the sleeve to be tested is placed vertically on the lifting platform (201), and the fixing plate II (6) is fitted into the sleeve to be tested and fixedly connected by bolts; one end of the fixed copper busbars IV (44) is detachably connected to the high voltage copper busbar (3) by bolts, and the other end is aligned with the center hole of the sleeve; the sleeve to be tested is fitted outside the fixed copper busbars IV (44) according to the height of the lifting platform (201); The switchgear insulation component performance quality testing fixture further includes: a handwheel (7), a lever (8), a lead screw (9), a slide table (10), a scale (11), a connecting plate (12), a nylon insulator (13), an equalizing ring (14), a fixture box (15), a copper busbar pad (16), and a copper busbar clamp (17); wherein, the handwheel (7) is fixedly connected to the lifting platform support frame (202) by bolts; the slide table (10) is fixedly connected to the connecting plate (12) by bolts; by rotating the handwheel (7), the slide table (10) is driven to move left and right through the lead screw (9). Sliding; the scale (11) and the lead screw (9) are fixedly connected by bolts; the upper end of the nylon insulator (13) is fixedly connected to the connecting plate (12) by bolts; the lower end of the nylon insulator (13) is fixedly connected to the insulating plate (1) by bolts; the equalizing ring (14) and the high-voltage copper busbar (3) are fixedly connected by bolts; the tooling box (15) has an opening on the side for tooling to be taken out and put away; the copper busbar pad (16) and the high-voltage copper busbar (3) are fixedly connected by bolts; the copper busbar clamp (17) and the insulating plate (1) are fixedly connected by bolts.

4. The switchgear insulation performance quality test fixture of claim 3, wherein, The lifting platform (201) is provided with a plurality of circular recessed hole structures for placing the insulating components to be tested; Multiple test tubes are placed one by one in the circular concave hole structure.

5. The test fixture for performance and quality testing of switchgear insulation components as described in claim 4, characterized in that, The lifting platform (201) has rectangular holes corresponding to the center of each circular concave hole structure. The area of ​​the rectangular hole is greater than or equal to the cross-sectional area of ​​the fixed copper busbar IV (44).

6. A switchgear insulation performance quality test fixture according to claim 1, 2 or 3, wherein, The lifting platform (2) also includes: a lifting machine (203), a lead screw (204), a servo motor (205), a reducer (206), a coupling (207), a connecting rod I (208), a connecting rod II (209), a controller (210), and a pulley (211). The servo motor (205) is fixedly connected to the reducer (206) by bolts; the coupling (207) is fixedly connected to the reducer (206) by bolts; the connecting rod I (208) and the connecting rod II (209) are fixedly connected to the lifting machine (203) by bolts through the coupling (207); the controller (210) is fixedly connected to the lifting platform support frame (202) by bolts; the pulley (211) is fixedly connected to the lower end of the lifting platform support frame (202) by bolts; the lifting machine (203) adjusts the height of the lifting platform (201) by moving up and down through the lead screw (204).

7. A test fixture for performance and quality testing of switchgear insulation components as described in claim 1, 2, or 3, characterized in that, The insulating plate (1) has a groove structure design on both the upper and lower surfaces.

8. A switchgear insulation performance quality test fixture according to claim 1, 2 or 3, wherein, The high-voltage copper busbar (3) has multiple rounded rectangular holes.

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