High-voltage component rapid test device for gas-insulated switchgear

Abstract

The invention discloses a rapid test device for a high-voltage component for a gas-insulated switchgear, and the device comprises a test device body which is of a hexahedron structure formed by welding a metal plate; the first sleeve structure is installed inwards through the first sleeve installation hole, and the first sleeve structure is matched with high-pressure lubricating grease to be provided with an adaptive port used for leading in a high-pressure end or a high-pressure component needing to be tested. The second sleeve structure is installed inwards through the second sleeve installation hole, and a high-voltage component needing to be tested or an adaptive port used for leading in a high-voltage end is installed on the second sleeve structure in cooperation with high-voltage lubricating grease. And connecting the adaptive port of the high-voltage end with the high-voltage component to be tested through a conductive busbar. According to the invention, the in-factory inspection efficiency of the high-voltage components of a complete set of manufacturers of the gas insulated switchgear can be improved, the complete set capacity of the manufacturers is indirectly improved, meanwhile, a scheme for rapidly testing the high-voltage components on site can be provided for users, and manpower and time cost are saved.

Description

Technical Field

[0001] The invention relates to the field of medium-voltage gas-insulated switchgear, and in particular to a high-voltage component rapid testing device for a gas-filled cabinet. Background Art

[0002] Medium voltage gas insulated switchgear is widely used in 12~40.5kV power transmission and transformation systems to receive and distribute electric energy, and to control, measure, protect and monitor the normal operation and fault conditions of the power system. At the same time, the use of high voltage components in the corresponding gas insulated cabinet (gas insulated switchgear) supporting engineering projects, such as busbar plugs, lightning arresters, voltage transformers, straight-plug cables, T-cables, plugs, outer cone bushing insulation caps, and pressure-resistant adapters, is also increasing. This also increases the workload of the quality inspection department of the gas insulated cabinet manufacturer for the factory inspection of high voltage components and the difficulty of the after-sales service department in the handover test of high voltage components at the project site.

[0003] The problem with the original high-voltage component inspection equipment is that one specification of high-voltage component corresponds to one set of test equipment, and the test equipment is large in size, cumbersome to install and operate, and has low switching efficiency. The problem with the on-site high-voltage component handover test of the project is that the newly built substation is located in a remote area with limited on-site conditions, and the manufacturer's original test equipment is inconvenient to transport to the site, resulting in the high-voltage component handover test may have to wait for the third-party test equipment to arrive at the site, or be transported to a qualified third-party inspection laboratory, which will greatly increase the labor cost and time cost of the after-sales service department of the gas-insulated switchgear manufacturer.

[0004] Therefore, in order to ensure the product quality of high-voltage components for inflatable cabinets, effectively improve their inspection efficiency before entering the factory, and reduce the labor and time costs of on-site high-voltage component handover tests in after-sales departments, a rapid testing device for high-voltage components for inflatable cabinets was invented. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the object of the present invention is to provide a high-voltage component rapid testing device for an inflatable cabinet.

[0006] Through the present invention, the efficiency of high-voltage component inspection of inflatable cabinet complete set manufacturers can be improved, and the complete set production capacity of the manufacturer can be indirectly improved. At the same time, it can also provide users with a solution for rapid on-site testing of high-voltage components, saving manpower and time costs, and indirectly improving users' after-sales service favorability, laying a solid foundation for the next step of long-term cooperation.

[0007] A high-voltage component rapid testing device for an inflatable cabinet, comprising:

[0008] A test device body, wherein the test device body is a hexahedron structure formed by welding metal plates, and the hexahedron includes a bottom metal plate, a top metal plate, a first side metal plate, a second side metal plate, a front metal plate and a rear metal plate;

[0009] The bottom metal plate, the front metal plate and the rear metal plate are all provided with reinforcing rib structures;

[0010] A first flange plate is provided on the top metal plate through a first sealing ring and an inflation valve is installed which penetrates into the interior of the test device body;

[0011] A first sleeve installation hole is opened on the first side metal plate, and a first flange plate with holes is arranged around the first sleeve installation hole through a second sealing ring;

[0012] A second sleeve installation hole is opened on the second side metal plate, and a second flange plate with holes is arranged around the second sleeve installation hole through a third sealing ring;

[0013] The first side metal plate and the second side metal plate are symmetrically arranged or vertically arranged;

[0014] The first sleeve structure is installed inwardly through the first sleeve installation hole, and the first sleeve structure is installed with high-pressure grease to introduce the adapter port of the high-pressure end or the high-voltage component to be tested;

[0015] The second sleeve structure is installed inwardly through the second sleeve installation hole, and the high-voltage components to be tested or the adapter port for introducing the high-voltage end are installed on the second sleeve structure in conjunction with high-pressure grease;

[0016] The adapter port of the high-voltage end is connected to the high-voltage component to be tested via a conductive busbar.

[0017] In a preferred embodiment of the present invention, the conductive busbar is a copper busbar.

[0018] In a preferred embodiment of the present invention, the reinforcing rib structure is a group of reinforcing ribs symmetrically arranged on the metal plate.

[0019] In a preferred embodiment of the present invention, the first flange plate is reinforced circumferentially by square steel.

[0020] In a preferred embodiment of the present invention, the inflation valve inflates a gas medium into the interior of the test device body, and the gas medium is sulfur hexafluoride, nitrogen, or dry air as an insulating medium.

[0021] In a preferred embodiment of the present invention, the first sleeve structure is a straight-insertion sleeve or an outer cone sleeve.

[0022] In a preferred embodiment of the present invention, the second sleeve structure is a straight sleeve or an outer cone sleeve.

[0023] The beneficial effects of the present invention are:

[0024] The present invention can improve the inspection efficiency of high-voltage components of complete set manufacturers of inflatable cabinets, indirectly improve the complete set production capacity of manufacturers, and also provide users with a solution for rapid on-site testing of high-voltage components, saving manpower and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0026] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0027] Figure 3 The structure of the present invention is schematically shown Figure 3 .

[0028] Figure 4 The installation diagram of the present invention is shown in FIG. Figure 4 .

[0029] Figure 5 The use of the present invention is shown in FIG. Figure 5 . DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following structure, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] like Figure 1-3The shown high-voltage component rapid testing device for an inflatable cabinet includes a testing device body 10. The testing device body 10 is a hexahedral structure formed by welding metal plates. The hexahedron includes a bottom metal plate 1, a top metal plate 2, a first side metal plate 3, a second side metal plate 4, a front metal plate 5 and a rear metal plate 6.

[0033] A reinforcing rib structure 100 is provided on the bottom metal plate 1, the front metal plate 5 and the rear metal plate 6. The reinforcing rib structure 100 is a group of reinforcing ribs symmetrically opened on the metal plates.

[0034] The reinforcing rib structure 100 is used to strengthen the strength of the metal plate corresponding to the test device and to ensure the flatness of the placement of the test device.

[0035] Handles 500 may also be provided on the front metal plate 5 and the rear metal plate 6 as required to facilitate quick on-site transportation.

[0036] A first flange plate 22 is provided on the top metal plate 2 through a first sealing ring 21 and is provided with an inflation valve 23 penetrating into the interior of the test device body 10. The first flange plate 22 is reinforced by a square steel 24 in the circumferential direction.

[0037] The inflation valve 23 inflates the gas medium into the interior of the test device body, and the gas medium is sulfur hexafluoride, nitrogen, and dry air as an insulating medium.

[0038] A first sleeve installation hole 31 is formed in the first side metal plate 3 , and a first flange plate 33 with holes is arranged around the first sleeve installation hole 31 via a second sealing ring 32 .

[0039] A second sleeve installation hole 41 is formed in the second side metal plate 4 , and a second flange plate 43 with holes is arranged around the second sleeve installation hole 41 via a third sealing ring 42 .

[0040] The first side metal plate 3 and the second side metal plate 4 are symmetrically arranged or vertically disposed.

[0041] The first sleeve structure 200 is installed inwardly through the first sleeve installation hole 31, and the adapter port 210 for introducing the high-pressure end or installing the high-voltage component 310 to be tested is installed on the first sleeve structure 200 in conjunction with high-pressure grease.

[0042] The second sleeve structure 300 is installed inwardly through the second sleeve installation hole 41 , and the high-voltage component 310 to be tested or the adapter port 210 for introducing the high-voltage end is installed on the second sleeve structure 300 in conjunction with high-pressure grease.

[0043] The first bushing structure 200 and the second bushing structure 300 are connected via a conductive busbar 400. The conductive busbar 400 is a copper busbar.

[0044] Focus on combination Figure 4 The first sleeve structure 200 is a straight sleeve 201 or an outer cone sleeve 202, and the second sleeve structure 300 is a straight sleeve 301 or an outer cone sleeve 302. The straight sleeve 301 can be in various forms.

[0045] Focus on combination Figure 5 The high-voltage components 310 that need to be tested may be plugs 311, voltage transformers 312, lightning arresters 313, direct-insert cables 314, T-cables 315, and other high-voltage components that need to be tested.

[0046] After assembly, the inflation valve 23 installed on the top of the device can be used to complete leak detection and internal inflation in conjunction with the leak detection device. The insulating gas and inflation pressure inside the device can be adjusted as needed. Sulfur hexafluoride, nitrogen, and dry air are conventionally and preferably used as insulating media. The internal gas pressure of the test device can reach a maximum of 0.2MPa (absolute pressure) through the arrangement of external reinforcement ribs. The conventional preferred inflation pressure is 0.13-0.15MPa (absolute pressure).

[0047] The main content of this technical solution is that the high-voltage component rapid testing device for the inflatable cabinet is assembled and leak-checked and inflated.

[0048] Through the bushing interface on one side of the left and right side panel bushings, use high-pressure grease to install the adapter port (such as a high-voltage adapter) for introducing the high-voltage end, and use high-pressure grease to install the high-voltage components to be tested through the bushing interface on the other side. The specific side where it is installed can be changed as needed. After the installation is completed, high voltage is introduced through the high-voltage end, which can be used to test the power frequency withstand voltage, partial discharge, lightning impulse and other national standard test items of the high-voltage components.

[0049] like Figure 4 As shown in the figure, it is a schematic diagram of the expansion scheme of the rapid test device for high-voltage components for inflatable cabinets. Only six conventional general schemes are given in the figure, but according to the different interfaces of high-voltage components, it is not limited to these six schemes. Its internal structure can be freely combined according to the layout method and the type of casing interface. According to the different layout methods, it can be roughly divided into horizontal layout and vertical layout, and according to the different interfaces, it can be divided into plug-in interface and outer cone interface. One of the interfaces is used to install the pressure-resistant adapter for high-voltage introduction, and the other interface is used to install the high-voltage components for inflatable cabinets to be tested. At the same time, according to the actual needs, in addition to one high-voltage introduction end interface, this test device can be expanded to two or more identical interfaces for testing multiple identical high-voltage components at the same time; or it can be expanded to two or more interfaces for testing high-voltage components of various specifications, thereby improving the versatility of the test device.

[0050] like Figure 5The figure shows the working principle of the rapid test device for high-voltage components for inflatable cabinets, but it is not limited to the five high-voltage components shown in the figure. One of the interfaces in the figure is used to install a withstand voltage adapter for high voltage introduction, and the other interface is used to install high-voltage components for inflatable cabinets to be tested. The high-voltage components can be bushing plugs, voltage transformers, lightning arresters, direct-insert cables, T-type cables, etc. Other high-voltage components that meet the interface requirements are also suitable for this rapid test device. It can be used to test the power frequency withstand voltage, partial discharge, lightning impulse and other national standard test items of high-voltage components.

[0051] The basic principles and main features of the invention and the advantages of the invention are shown and described above.

[0052] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rapid test device for high-voltage components for an inflatable cabinet, characterized in that: include: A test device body, wherein the test device body is a hexahedron structure formed by welding metal plates, and the hexahedron includes a bottom metal plate, a top metal plate, a first side metal plate, a second side metal plate, a front metal plate and a rear metal plate; The bottom metal plate, the front metal plate and the rear metal plate are all provided with reinforcing rib structures; A first flange plate is provided on the top metal plate through a first sealing ring and an inflation valve is installed which penetrates into the interior of the test device body; A first sleeve installation hole is opened on the first side metal plate, and a first flange plate with holes is arranged around the first sleeve installation hole through a second sealing ring; A second sleeve installation hole is opened on the second side metal plate, and a second flange plate with holes is arranged around the second sleeve installation hole through a third sealing ring; The first side metal plate and the second side metal plate are symmetrically arranged or vertically arranged; The first sleeve structure is installed inwardly through the first sleeve installation hole, and the first sleeve structure is installed with high-pressure grease to introduce the adapter port of the high-pressure end or the high-voltage component to be tested; The second sleeve structure is installed inwardly through the second sleeve installation hole, and the high-voltage components to be tested or the adapter port for introducing the high-voltage end are installed on the second sleeve structure in conjunction with high-pressure grease; The adapter port of the high-voltage end is connected to the high-voltage component to be tested via a conductive busbar.

2. A high-voltage component rapid testing device for an inflatable cabinet as claimed in claim 1, characterized in that: The conductive busbar is a copper busbar.

3. A high-voltage component rapid testing device for an inflatable cabinet as claimed in claim 1, characterized in that: The reinforcing rib structure is a group of reinforcing ribs symmetrically arranged on the metal plate.

4. A high-voltage component rapid testing device for an inflatable cabinet as claimed in claim 1, characterized in that: The first flange plate is reinforced in the circumferential direction by square steel.

5. A high-voltage component rapid testing device for an inflatable cabinet as claimed in claim 1, characterized in that: The inflation valve inflates the interior of the test device body with a gas medium, wherein the gas medium is sulfur hexafluoride, nitrogen, or dry air as an insulating medium.

6. A high-voltage component rapid testing device for an inflatable cabinet as claimed in claim 1, characterized in that: The first sleeve structure is a straight-insertion sleeve or an outer cone sleeve.

7. A high-voltage component rapid testing device for an inflatable cabinet as claimed in claim 1, characterized in that: The second sleeve structure is a straight-insertion sleeve or an outer cone sleeve.

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