Bus fixing structure of gas insulation equipment and gas insulation equipment

Abstract

The utility model discloses a bus fixing structure of environment-friendly gas insulation equipment and the gas insulation equipment in the technical field of electrical equipment, the bus fixing structure comprises a bus, an insulator, a spherical screw and a screw bus fixing piece, the spherical screw comprises a rod part and a head part, the rod part of the spherical screw is fixed on the insulator, and the head part of the spherical screw is fixed on the screw bus fixing piece. The head portion of the spherical screw is in an ellipsoidal shape, the ellipsoidal head portion of the spherical screw is provided with a through groove which is perpendicular to the rod portion and matched with the bus bar in shape, the bus is inserted into the through groove and fixed through the screw bus fixing piece, and the screw bus fixing piece is embedded in the ellipsoidal head portion. According to the scheme, the problem that the insulating property of a fixing structure in the prior art is not suitable for environment-friendly insulating gas with weak insulating property is solved, and the beneficial effects of optimizing the electric field structure of a fixing part and ensuring the insulating property of the bus fixing structure of the environment-friendly insulating gas with weak insulating property are achieved.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, specifically to a busbar fixing structure and gas insulation device for an environmentally friendly gas insulation device. Background Technology

[0002] In electrical equipment, to prevent electrodynamic damage to busbars, they need to be secured at regular intervals. In switchgear using commonly used, highly insulating gases such as SF6, the busbars can be directly fixed to the insulating components with screws. However, in response to carbon neutrality policies, equipment is now using environmentally friendly insulating gases with weaker insulation properties. The previous fixing methods, with their numerous sharp points and poor electric field, present insulation problems without increasing electrical distance, making them unsuitable for widespread use in environmentally friendly gas-insulated equipment. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this application provides a busbar fixing structure and a gas insulation device for environmentally friendly gas insulation, thereby solving the problem that the insulation performance of the aforementioned fixing structure is not suitable for environmentally friendly insulating gases with weak insulation properties.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A busbar fixing structure for a gas-insulated device includes a busbar and an insulator, and further includes a spherical screw and a screw-busbar fixing component. The spherical screw includes a shank and a head. The shank is fixed to the insulator. The head of the spherical screw is ellipsoidal. The ellipsoidal head of the spherical screw has a through groove perpendicular to the shank and matching the shape of the busbar. The busbar is inserted into the through groove and fixed using the screw-busbar fixing component. The screw-busbar fixing component is submerged within the ellipsoidal head.

[0006] Preferably, the busbar has a through hole along the radial direction, and the ellipsoidal head of the ball screw also has a through hole corresponding to the radial through hole on the busbar. The through holes on the ball screw are perpendicular to the shank of the ball screw and the center line of the busbar, respectively. The screw busbar fixing member is concentrically inserted into the through holes of the ball screw and the busbar to position and fix the ball screw and the busbar.

[0007] Preferably, the long axis of the ellipsoidal head of the spherical screw is perpendicular to the shank.

[0008] Preferably, the busbar is a rod-shaped busbar, and the ellipsoidal head of the spherical screw is a perfect sphere.

[0009] Preferably, the screw busbar fixing component uses a cylindrical pin, and the length of the pin is not longer than the length of the through hole on the ball screw.

[0010] Preferably, the end of the cylindrical pin is rounded.

[0011] Preferably, the screw busbar fixing member comprises a threaded rod, the busbar through hole is internally threaded, and the total length of the screw busbar fixing member is not longer than the length of the upper through hole of the spherical screw.

[0012] Preferably, the screw busbar fixing member uses a side screw, the upper part of the side through hole of the spherical screw is provided with a counterbore suitable for the shape of the head of the side screw, and the head of the side screw uses a cylindrical head.

[0013] Preferably, the wrenching shape of the cylindrical head uses an internal hexagon.

[0014] Based on the same inventive concept, the application also discloses a gas insulated device, which uses the busbar fixing structure to fix the busbar on the insulator.

[0015] The application has the following beneficial effects: the ball head of the spherical screw can embed the screw busbar fixing member in the ball head, there is no sharp end, the charge is uniformly distributed, and the field strength is good; after the busbar is fixed by the spherical screw of the structure, the busbar cannot be loosened by rotation, and the safety is high; in summary, the structure can fix the position of the busbar while optimizing the electric field structure of the fixing part, ensure the insulation performance, and the fixing structure can be applied to various busbar structures. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an exploded view of the embodiment of the application for a rod-shaped busbar;

[0017] Figure 2 It is a side view of the embodiment of the application for a rod-shaped busbar after being fixed;

[0018] Figure 3 It is an exploded view of the embodiment of the application for a square busbar;

[0019] Figure 4 It is a side view of the embodiment of the application for a square busbar after being fixed;

[0020] In the drawings, 1 is a spherical screw, 2a is a pin, 2b is a side screw, 3a is a rod-shaped busbar, 3b is a square busbar, and 4 is an insulator. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application.

[0022] The application provides an embodiment of bus fixing structure of gas insulated equipment: the embodiment comprises a bus, an insulator 4, a spherical screw 1 and a screw bus fixing piece, the rod part of the spherical screw 1 is fixed on the insulator 4, in the embodiment, the rod part of the spherical screw 1 has external threads, the spherical screw 1 can be screwed into the insulator 4, the head part of the spherical screw 1 is a regular sphere, the bus is a rod-shaped bus 3a, the spherical head part of the spherical screw 1 is provided with a circular through groove which is perpendicular to the rod part and matches the shape of the bus, the rod-shaped bus 3a is inserted into the through groove and fixed by using the screw bus fixing piece, the screw bus fixing piece is located in the ellipsoidal head part, in the embodiment, the screw bus fixing piece uses a cylindrical pin 2a, the length of the pin 2a is not longer than the length of the through hole on the spherical screw 1, and the two ends of the cylindrical pin 2a are chamfered.

[0023] The application also provides another embodiment of bus fixing structure of gas insulated equipment: the embodiment also comprises a bus, an insulator 4, a spherical screw 1 and a screw bus fixing piece, the rod part of the spherical screw 1 is fixed on the insulator 4, the head part of the spherical screw 1 is an ellipsoid, the long axis of the ellipsoidal head part of the spherical screw 1 is perpendicular to the rod part, so that the structure of the spherical screw 1 is more solid, the bus is a square bus 3b, the square bus can also be called a rectangular bus, the spherical head part of the spherical screw 1 is milled into a square through groove which is perpendicular to the rod part and matches the shape of the bus, the square bus 3b is inserted into the through groove and also fixed by using the screw bus fixing piece, the screw bus fixing piece is located in the ellipsoidal head part, in the embodiment, the screw bus fixing piece uses a side screw 2b, the upper part of a side through hole on the spherical screw 1 is provided with a counterbore which is adapted to the shape of the head part of the side screw 2b, in the embodiment, the head part of the side screw 2b uses a cylindrical head, the side screw 2b comprises a rod part with external threads, the inside of the bus through hole is provided with internal threads, the total length of the head part and the rod part of the side screw 2b is not longer than the length of the through hole on the spherical screw 1, and the two ends of the cylindrical pin 2a are chamfered. In addition to using the cylindrical head and the internal hexagonal wrench shape in the embodiment, the side screw 2b can also use other head shapes without protruding shapes, such as a round head, a flat round head, a spherical cylindrical head, and appropriate wrench shapes, such as an internal square and an internal hexagonal key.

[0024] In the case that the bus does not need to be fixed by rotating in the spherical screw, the screw bus fixing piece can also use other ways, such as setting a clamping piece in the through groove and setting an annular groove on the outer surface of the bus, and other ways.

[0025] Based on the same inventive concept, the application also discloses a gas insulation device, which uses the busbar fixing structure to fix the busbar on the insulator 4, and combines the rule that the larger the diameter of the ball head is, the lower the field strength is. By adjusting the diameter of the ball head of the ball screw 1, the structure can be universally applied to various voltage grade environmental protection insulating gas insulation devices.

[0026] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed in the present application according to the technical scheme and inventive concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. A busbar fixing structure of a gas insulated device, comprising a busbar and an insulator (4), characterized by: The ball screw (1) includes a stem and a head, the stem of the ball screw (1) is fixed on the insulator (4), the head of the ball screw (1) is ellipsoidal, the ellipsoidal head of the ball screw (1) is provided with a through slot perpendicular to the stem and matching the shape of the busbar strip, the busbar is inserted into the through slot and fixed by using the busbar fixing member, and the busbar fixing member is embedded in the ellipsoidal head.

2. The busbar fixing structure of a gas insulated device according to claim 1, characterized in that: The busbar is provided with a radial through hole, the ellipsoidal head of the ball screw (1) is also provided with a through hole corresponding to the radial through hole of the busbar, the through hole of the ball screw (1) is perpendicular to the stem and the center line of the busbar, respectively, and the busbar fixing member is concentrically inserted into the through holes of the ball screw (1) and the busbar to position and fix the ball screw (1) and the busbar.

3. The busbar fixing structure of a gas insulated device according to claim 1, characterized in that: The long axis of the ellipsoidal head of the ball screw (1) is perpendicular to the stem.

4. The busbar fixing structure of a gas insulated device according to claim 3, characterized in that: The busbar is a rod-shaped busbar (3a), and the ellipsoidal head of the ball screw (1) is a regular sphere.

5. The busbar fixing structure of a gas insulated device according to claim 2, characterized by: The busbar fixing member uses a cylindrical pin (2a), and the length of the pin (2a) is not longer than the length of the through hole of the ball screw (1).

6. The busbar fixing structure of a gas insulated device according to claim 5, characterized in that: The end of the cylindrical pin (2a) is rounded.

7. The busbar fixing structure of a gas insulated device according to claim 2, characterized by: The busbar fixing member includes a stem with external threads, the inside of the through hole of the busbar is provided with internal threads, and the total length of the busbar fixing member is not longer than the length of the through hole of the ball screw (1).

8. The busbar fixing structure of a gas insulated device according to claim 7, characterized by: The busbar fixing member uses a side screw (2b), the upper part of one side of the through hole of the ball screw (1) is provided with a counterbore matching the shape of the head of the side screw (2b), and the head of the side screw (2b) uses a cylindrical head.

9. The busbar fixing structure of a gas insulated device according to claim 8, characterized in that: The wrench shape of the cylindrical head uses an internal hexagon.

10. A gas insulated device, characterized by: The busbar is fixed on the insulator (4) by using the busbar fixing structure of any one of claims 1-9.

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