Support assembly for GIS terminal pressure test

Abstract

The utility model provides a kind of support assembly for GIS terminal withstand voltage test, the support assembly is used to support electric insulation plug cone in the female end interface inside GIS terminal, to facilitate the execution withstand voltage test to the GIS terminal.In one embodiment, the support assembly includes support cover and support element, the support cover is configured to be detachably connected to the female end interface of the GIS terminal;The support element is configured to be able to engage the end of the electric insulation plug cone in a shape-fitting manner;Wherein, the support element is movably matched with the support cover, so that the support cover exerts pressure on the electric insulation plug cone via the support element, to stably support the electric insulation plug cone in the female end interface inside GIS terminal.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and in particular to a support component used during the withstand pressure test of a GIS terminal. Background Technology

[0002] In high-voltage power transmission systems, GIS (Gas Insulated Switchgear) typically requires on-site withstand voltage testing before use. In existing withstand voltage testing sites, the female terminal interface of the GIS is open before the test, necessitating sealing to achieve proper insulation. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a support assembly for a withstand voltage test of a GIS terminal is provided. The support assembly is used to support an electrically insulating cone within the female interface of the GIS terminal to facilitate the performance of a withstand voltage test on the GIS terminal. The support assembly includes a support cover and a support element. The support cover is configured to be detachably connected to the female interface of the GIS terminal. The support element is configured to engage the end of the electrically insulating cone in a shape-fitting manner. The support element and the support cover are movably coupled such that the support cover applies pressure to the electrically insulating cone via the support element to securely support the electrically insulating cone within the female interface of the GIS terminal.

[0005] In an exemplary embodiment of the present invention, the support element and the support cover are independent components, and the support element and the support cover are fitted with a clearance fit.

[0006] In an exemplary embodiment of the present invention, the support assembly includes two independent support elements.

[0007] In an exemplary embodiment of the present invention, each support element includes a support portion and a mating shaft portion, and the support cover has a mating groove; the support portion of each support element is used to contact and support the end of the electrically insulating cone in a shape-fitting manner; and the mating shaft portion of each support element is disposed in the mating groove of the support cover in a clearance fit manner.

[0008] In an exemplary embodiment of the present invention, the mating groove has the shape of a circular slot, and the mating shaft portions of the two supporting elements together form the shape of a cylindrical shaft.

[0009] In an exemplary embodiment of the present invention, the support cover has a fastener through hole, wherein the support cover is detachably connected to the female interface of the GIS terminal by means of a fastener passing through the fastener through hole and being fastened to the female interface of the GIS terminal.

[0010] In one exemplary embodiment of the present invention, the support cover is made of aluminum alloy and the support element is made of nylon plastic.

[0011] In an exemplary embodiment of the present invention, the support assembly includes the electrically insulating cone; and / or, the electrically insulating cone is solid.

[0012] In an exemplary embodiment of this invention, the GIS terminal is a GIS terminal applied to a 72.5KV voltage.

[0013] In an optional embodiment of the present invention, the support assembly further includes an elastic element that abuts against the support element, and the elastic element is configured to abut against the electrically insulating cone to apply pressure to the electrically insulating cone when the support element and the support cover support the electrically insulating cone inside the female interface of the GIS terminal.

[0014] The support components for withstand voltage testing of GIS terminals provided in the foregoing embodiments of this utility model have a simple structure and are easy to install. They can stably support the electrically insulating cone inside the female interface of the GIS terminal, facilitating on-site withstand voltage testing of the GIS terminal while ensuring the accuracy and reliability of the withstand voltage test. The support components for withstand voltage testing of GIS terminals provided in the foregoing embodiments of this utility model also have good reusability and a wide range of applications, meeting the withstand voltage testing requirements of GIS terminals with different voltage levels.

[0015] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the structure of the support assembly for the pressure resistance test of a GIS terminal according to an exemplary embodiment of the present invention when it is installed on the GIS terminal;

[0017] Figure 2 This is a partial cross-sectional structural diagram showing the support component according to an exemplary embodiment of the present invention being installed on a GIS terminal;

[0018] Figure 3This is an enlarged cross-sectional schematic diagram showing the fit between the support assembly and the electrically insulating cone according to an exemplary embodiment of the present invention;

[0019] Figure 4 This is a partial cross-sectional structural diagram showing the support component according to an optional embodiment of the present invention being installed on a GIS terminal;

[0020] Figure 5 This is an enlarged cross-sectional schematic diagram showing the fit between the support component and the electrically insulating cone according to an optional embodiment of the present invention. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0022] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0023] This invention provides a support assembly for withstand voltage testing of GIS (Gas Insulated Switchgear) terminals. This support assembly is used to securely support the electrically insulating cone inside the female interface of the GIS terminal so that withstand voltage testing of the GIS terminal can be performed on-site.

[0024] Figure 1 This is a structural diagram showing the support component for pressure resistance testing of a GIS terminal according to an exemplary embodiment of the present invention, when it is installed on the GIS terminal, illustrating that the support component is installed on the female interface of the GIS terminal via fasteners (e.g., bolts). Figure 2 This is a partial cross-sectional structural diagram showing the support component according to an exemplary embodiment of the present invention being installed on a GIS terminal, illustrating the connection method between the support component and the female interface of the GIS terminal. Figure 3 This is an enlarged cross-sectional schematic diagram showing the fitting relationship between the support assembly and the electrically insulating cone according to an exemplary embodiment of the present invention, illustrating the detailed fitting relationship between the support cover and support element in the support assembly and the electrically insulating cone.

[0025] Specifically, such as Figures 1 to 3As shown, the support assembly provided by this utility model mainly includes a support cover 10 and a support element 20. The support cover 10 is configured to be detachably connected to the female interface of the GIS terminal 1, and the support element 20 is configured to engage the end of the electrically insulating cone 2 in a shape-fitting manner. According to this utility model, the support element 20 and the support cover 10 are movably coupled, such that the support cover 10 applies pressure to the electrically insulating cone 2 via the support element 20, thereby firmly supporting the electrically insulating cone 2 inside the female interface of the GIS terminal 1. According to this utility model, the support element 20 and the support cover 10 are independent components, and a clearance fit is adopted between the support element 20 and the support cover 10. This fit ensures that the support element 20 can freely adjust its position within a certain range within the support cover 10, thereby better adapting to the ends of electrically insulating cones 2 of different shapes, and thus improving the stability of the support.

[0026] In such Figure 2 and Figure 3 In the exemplary embodiment shown, the support assembly includes two independent support elements 20. Each support element 20 includes a support portion 21 and a mating shaft portion 22, and the support cover 10 has a mating groove 12. The support portion 21 of each support element 20 is used to contact and support the end of the electrically insulating cone 2 in a shape-fitting manner, and the mating shaft portion 22 of each support element 20 is disposed in the mating groove 12 of the support cover 10 in a clearance fit manner. The design of two independent support elements 20 can better distribute the support force, improve the stability of the support, and facilitate manufacturing, maintenance and replacement.

[0027] In such Figure 2 and Figure 3 In the exemplary embodiment shown, the mating groove 12 has a circular slot shape, and the mating shaft portions 22 of the two support elements 20 together form a cylindrical shaft shape. When the mating shaft portions 22 of the two support elements 20 are inserted into the mating groove 12, they together form a complete cylindrical shaft, forming a clearance fit with the circular slot of the mating groove 12. This design allows the two support elements 20 to rotate and move slightly as a whole within the mating groove 12, thereby accommodating the ends of electrically insulating cones 2 of different sizes. Moreover, this design ensures the centered positioning of the electrically insulating cone 2, thereby ensuring tight contact between the end of the electrically insulating cone 2 and the female interface of the GIS terminal. The diameter of the mating shaft portion 22 is slightly smaller than the diameter of the mating groove 12, and the resulting gap is typically controlled within, for example, the range of about 0.1mm-0.5mm, ensuring both the flexibility of the fit and the stability of the support. In particular, Figure 3The precise fit between the support assembly and the electrically insulating cone 2 is shown in detail. In this fit, the support portions 21 of the two support elements 20 symmetrically contact the conical ends of the electrically insulating cone 2 from both sides, forming a stable support structure. The inner surface shape of the support portion 21 perfectly matches the outer surface contour of the electrically insulating cone 2, ensuring maximum contact area, thereby effectively dispersing the support force and improving support stability. The mating shaft portions 22 of the two support elements 20 form a complete cylindrical mating pair within the mating groove 12. This mating pair not only bears the axial pressure from the support cover 10 but also automatically adjusts the radial position of the support elements 20, ensuring that the support portion 21 always maintains optimal contact with the electrically insulating cone 2. This split-design mating shaft portion 22 structure allows the two support elements 20 to independently fine-tune their respective support angles, better adapting to the geometric changes at the ends of the electrically insulating cone 2, ensuring that the position of the electrically insulating cone 2 remains stable throughout the withstand voltage test.

[0028] Regarding material selection, the support cover 10 is preferably made of aluminum alloy, which has good mechanical strength and corrosion resistance. The support element 20 is preferably made of nylon plastic, which has good insulation properties and appropriate elasticity, enabling it to form good contact with the electrically insulating cone 2 while avoiding scratching the electrically insulating cone 2. Nylon plastic material has excellent insulation properties, which can effectively prevent electrical breakdown, while its appropriate elasticity allows the support element 20 to better fit the end surface of the electrically insulating cone 2, improving the support effect. In addition, the use of aluminum alloy for the support cover 10 and nylon plastic with appropriate elasticity for the support element 20 can prevent them from scratching each other during clearance fitting, thus avoiding the generation of metal debris that would affect electrical performance.

[0029] In addition, the support cover 10 has fastener through holes 11. The support cover 10 is detachably connected to the female interface of the GIS terminal 1 by means of fasteners 40 passing through the fastener through holes 11 and being fastened to them. The fasteners 40 can be bolts, screws, or other suitable fasteners. The number and distribution of the fastener through holes 11 depend on the specific structure of the female interface of the GIS terminal 1. Multiple fastener through holes 11 are usually provided to ensure the reliability and stability of the connection. The external dimensions of the support cover 10 can be matched with the female interface of the GIS terminal 1 to ensure that it can completely cover the opening of the female interface.

[0030] The electrically insulating cone 2 is preferably solid to provide better insulation performance and mechanical strength. The solid structure effectively prevents insulation degradation caused by internal cavities, while also providing higher mechanical strength to withstand electrical and mechanical stresses during withstand voltage tests. In an exemplary embodiment, the support assembly may include the electrically insulating cone 2; that is, the electrically insulating cone 2 can be part of the support assembly. In other embodiments, the support assembly may also be provided separately, with the electrically insulating cone 2 configured by the user as needed. The material of the electrically insulating cone 2 is typically epoxy resin or other high-insulation composite materials.

[0031] The support assembly in this exemplary embodiment is specifically designed for GIS terminal 1 with a voltage of 72.5kV, but it can also be designed to be suitable for GIS terminals with other voltage levels as needed. For applications with different voltage levels, the corresponding technical requirements can be met by adjusting the size, material thickness, and insulation performance parameters of the support assembly. For example, for applications with higher voltage levels, the thickness of the support cover 10 can be increased, a material with a higher insulation level can be selected, or the number of support elements 20 can be increased to improve the stability of the support.

[0032] In use, first insert the electrically insulating cone 2 into the female interface of the GIS terminal 1, ensuring that the electrically insulating cone 2 is correctly positioned and fits well against the inner wall of the female interface. Then, contact the support part 21 of the support element 20 with the end of the electrically insulating cone 2, and adjust the position of the support element 20 to fit the shape of the electrically insulating cone 2. Next, fix the support cover 10 to the female interface of the GIS terminal 1 using fasteners 40, for example, by gradually tightening each fastener 40 according to the specified torque requirements. By adjusting the tightness of the fasteners 40, the pressure of the support cover 10 on the support element 20 can be controlled, thereby ensuring that the electrically insulating cone 2 is stably supported in the appropriate position to meet the requirements of the withstand voltage test. The entire installation process is simple and quick, requiring no special tools; an ordinary wrench can complete the installation.

[0033] According to an optional embodiment of the present invention, see [link to embodiment]. Figure 4 and Figure 5 The support assembly may also include an elastic element 50, which abuts against the support element 20, and is configured to apply pressure to the electrically insulating cone 2 when the support element 20 and the support cover 10 support the electrically insulating cone 2 inside the female interface of the GIS terminal 1. Specifically, as Figure 4 and Figure 5As shown, the elastic element 50 is sleeved on the end of the electrically insulating cone 2. One end of the elastic element 50 abuts against the support element 20, and the other end abuts against the transition step surface of the electrically insulating cone 2. Further, a gasket 60 is provided at the transition interface of the electrically insulating cone 2, and the other end of the elastic element 50 abuts against the transition step surface of the electrically insulating cone 2 via the gasket 60. In the optional embodiment shown, the elastic element 50 is a spring. By providing the elastic element 50 and the gasket 60, the support assembly provided by this invention can further apply pressure to the electrically insulating cone 2 when supporting it inside the female interface of the GIS terminal 1, thereby further improving the electrical performance at the interface between the electrically insulating cone 2 and the female interface. It should be noted that... Figure 4 and Figure 5 The optional embodiments shown are similar to Figures 1 to 3 The only difference in the exemplary embodiments shown is the addition of a spring element and a washer. For clarity, the same parts / elements are referred to by the same reference numerals in the foregoing exemplary and alternative embodiments.

[0034] The support components for withstand voltage testing of GIS terminals provided in the foregoing embodiments of this utility model have a simple structure and are easy to install. They can stably support the electrically insulating cone inside the female interface of the GIS terminal, facilitating on-site withstand voltage testing of the GIS terminal while ensuring the accuracy and reliability of the withstand voltage test. The support components for withstand voltage testing of GIS terminals provided in the foregoing embodiments of this utility model also have good reusability and a wide range of applications, meeting the withstand voltage testing requirements of GIS terminals with different voltage levels.

[0035] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0036] While some embodiments of the present invention have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A support assembly for pressure resistance testing of a GIS terminal (1), characterized in that, The support assembly is used to support the electrically insulating cone (2) inside the female interface of the GIS terminal (1) to facilitate the performance of a withstand voltage test on the GIS terminal (1). The support assembly includes: Support cover (10), the support cover (10) being configured to be detachably connected to the female interface of the GIS terminal; and Support element (20), the support element (20) is configured to engage the end of the electrically insulating cone (2) in a shape-fitting manner; The support element (20) is movably coupled with the support cover (10), so that the support cover (10) applies pressure to the electrically insulating cone (2) via the support element (20) to stably support the electrically insulating cone (2) inside the female interface of the GIS terminal (1).

2. The support component according to claim 1, characterized in that, The support element (20) and the support cover (10) are independent components, and the support element (20) and the support cover (10) are fitted with a clearance.

3. The support component according to claim 1, characterized in that, The support assembly includes two independent support elements (20).

4. The support component according to claim 3, characterized in that, Each support element (20) includes a support portion (21) and a mating shaft portion (22), and the support cover (10) has a mating groove (12); The support portion (21) of each support element (20) is used to contact and support the end of the electrically insulating cone (2) in a shape-fitting manner; and The mating shaft portion (22) of each support element (20) is disposed in the mating groove (12) of the support cover (10) in a clearance fit manner.

5. The support component according to claim 4, characterized in that, The mating groove (12) has the shape of a circular slot, and the mating shaft portion (22) of the two support elements (20) together form the shape of a cylindrical shaft.

6. The support component according to any one of claims 1 to 5, characterized in that, The support cover (10) has a fastener through hole (11), wherein the support cover (10) is detachably connected to the female interface of the GIS terminal (1) by means of a fastener (40) passing through the fastener through hole (11) and fastening it to the female interface of the GIS terminal (1).

7. The support component according to any one of claims 1 to 5, characterized in that, The support cover (10) is made of aluminum alloy, and the support element (20) is made of nylon plastic.

8. The support component according to any one of claims 1 to 5, characterized in that, The support assembly includes the electrically insulating cone (2); and / or The electrically insulating cone (2) is solid.

9. The support component according to any one of claims 1 to 5, characterized in that, The GIS terminal (1) is a GIS terminal applied to a voltage of 72.5KV.

10. The support component according to any one of claims 1 to 5, characterized in that, The support assembly further includes an elastic element (50) abutting against the support element (20), and the elastic element (50) is configured to abut against the electrically insulating cone (2) to apply pressure to the electrically insulating cone (2) when the support element (20) and the support cover (10) support the electrically insulating cone (2) inside the female end interface of the GIS terminal (1).

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