Rotary grounding switch device

Abstract

The utility model discloses a rotary grounding switch device, which comprises a sealing device, a limiting sleeve, a movable cutter head module and a grounding bearing seat which are sequentially arranged from top to bottom, the sealing device is arranged at the top of an air box, the grounding bearing seat is arranged at the bottom of the air box, the upper end of the movable cutter head module is connected with the sealing device through the limiting sleeve, and the lower end of the movable cutter head module is connected with the grounding bearing seat through the limiting sleeve. The lower end of the moving tool bit module is rotatably connected in a grounding bearing seat, the sealing device comprises a rotating crank arm, the rotating crank arm is used for being connected with an operating mechanism on the outer side of a gas tank, the moving tool bit module comprises a moving tool bit group, the moving tool bit group is used for being connected with a static contact in the gas tank, and the moving tool bit group is used for being connected with the grounding bearing seat. According to the utility model, the operating mechanism is connected with the rotating crank arm, the rotating crank arm is driven by the operating mechanism to rotate, so that the sealing device drives the moving tool bit module to rotate, the moving tool bit module can be connected with the contact head in the gas tank, and the grounding switch is effective and reliable under the condition that the insulation level of the high-current environment-friendly cabinet is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, and specifically relates to a rotary earthing switch device. Background Art

[0002] The entire power industry is accelerating the construction of a new power system, which puts forward requirements for new power equipment that is green, environmentally friendly, and low-carbon. More and more manufacturers have begun to use dry air to replace the existing SF6 gas. However, the insulation performance of dry air is only one-third of that of SF6. Therefore, it is difficult to reduce the size of the gas-insulated switchgear while meeting the insulation requirements. To ensure both the insulation performance of the switch cabinet and control its external dimensions, it is necessary to optimize the design of each part of the switch cabinet. Therefore, a rotary earthing switch device is designed to control the external dimensions and meet the insulation performance. Content of the Utility Model

[0003] The purpose of the utility model is to provide a rotary earthing switch device. Through the connection between the operating mechanism and the rotating crank arm, the operating mechanism drives the rotating crank arm to rotate, so that the sealing device drives the moving knife head module to rotate, enabling the moving knife head module to connect with the contact head in the gas tank, realizing earthing opening or closing. While ensuring the insulation level of the large-current environmental protection cabinet, the effective and reliable operation of the earthing switch is achieved.

[0004] The utility model provides the following technical solution: A rotary earthing switch device includes a sealing device, a limit sleeve, a moving knife head module, and an earthing bearing seat arranged in sequence from top to bottom. The sealing device is installed at the top of the gas tank, the earthing bearing seat is installed at the bottom of the gas tank, the upper end of the moving knife head module is connected to the sealing device through the limit sleeve, and the lower end of the moving knife head module is rotatably connected in the earthing bearing seat. The sealing device includes a rotating crank arm, which is used to connect with the operating mechanism outside the gas tank. The moving knife head module includes a moving knife head group, which is used to connect with the static contact in the gas tank.

[0005] The sealing device further includes a magnetorheological fluid component and a taper pin. The rotating crank arm is fixed on the magnetorheological fluid component through the taper pin, and the rotating crank arm and the magnetorheological fluid component rotate together.

[0006] To realize the earthing of the moving knife head module, the moving knife head module further includes a connecting rod. The upper end of the connecting rod is connected with an upper end cover, the lower end of the connecting rod is connected with an earthing contact, and an earthing busbar is fixed on the surface of the connecting rod. The lower end of the earthing busbar is connected with the earthing contact.

[0007] To fix the moving knife head group on the connecting rod, the moving knife head group includes a socket and a knife head. The knife head is fixed on the socket, and the socket is fixed on the connecting rod.

[0008] To improve the insulation performance of the moving cutter head module, the moving cutter head module further includes an insulating cylinder sleeved outside the connecting rod, and the grounding bar, grounding contact and upper end cover are all located inside the insulating cylinder.

[0009] To form a reliable grounding between the grounding bearing seat and the grounding contact, the grounding bearing seat includes a bearing seat, a bearing and a spring finger. A limiting groove is formed at the bottom of the bearing seat, the bearing is arranged in the limiting groove, a groove is formed on the inner wall of the bearing seat, and the spring finger is sleeved in the groove.

[0010] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0011] (1) Through the connection between the operating mechanism and the rotating crank arm, the operating mechanism drives the rotating crank arm to rotate, so that the sealing device drives the moving cutter head module to rotate, enabling the moving cutter head module to connect with the contact head in the air box, realizing grounding opening or closing, and achieving effective and reliable grounding switch while ensuring the insulation level of the large-current switchgear.

[0012] (2) By arranging the connecting rod, grounding bar and grounding contact inside the insulating cylinder, the insulation performance of the moving cutter head module is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the structural schematic diagram of the sealing device of the present utility model;

[0016] Figure 3 is the schematic diagram of the moving cutter head group of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the moving cutter head module of the present utility model;

[0018] Figure 5 is the structural schematic diagram of the grounding bearing seat of the present utility model;

[0019] In the figure: 1. Sealing device; 11. Rotating crank arm; 12. Magnetorheological fluid component; 13. Taper pin; 2. Limiting sleeve; 3. Moving cutter head module; 31. Moving cutter head group; 311. Connecting sleeve; 312. Cutter head; 32. Connecting rod; 33. Grounding contact; 34. Grounding bar; 35. Insulating cylinder; 36. Upper end cover; 4. Grounding bearing seat; 41. Spring finger; 42. Bearing; 43. Bearing seat; 5. Air tank. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0021] Please refer to Figure 1 , the present invention provides a technical solution: a rotary grounding switch device, including a sealing device 1, a limiting sleeve 2, a moving cutter head module 3, and a grounding bearing seat 4 arranged in sequence from top to bottom. The sealing device 1 is installed on the top of the air tank 5, the grounding bearing seat 4 is installed on the bottom of the air tank 5, the upper end of the moving cutter head module 3 is connected to the sealing device 1 through the limiting sleeve 2, and the lower end of the moving cutter head module 3 is rotatably connected in the grounding bearing seat 4. The sealing device 1 includes a rotating crank arm 11, and the rotating crank arm 11 is used to connect with the operating mechanism outside the air tank 5. The moving cutter head module 3 includes a moving cutter head group 31, and the moving cutter head group 31 is used to connect with the static contact in the air tank 5. Through the transmission of the operating mechanism, the rotating crank arm 11 swings, further rotating the sealing device 1, driving the moving cutter head module 3 to rotate, so that the moving cutter head module 3 contacts or separates from the static contact in the air tank 5, achieving the purpose of grounding closing or opening, and realizing the effective and reliable grounding switch while ensuring the insulation level of the large-current switchgear.

[0022] As Figure 2 shown, the sealing device 1 further includes a magnetorheological fluid component 12 and a taper pin 13. The rotating crank arm 11 is fixed on the magnetorheological fluid component 12 through the taper pin 13, and the rotating crank arm 11 and the magnetorheological fluid component 12 rotate together. Through the transmission of the operating mechanism, the rotating crank arm 11 rotates, further rotating the magnetorheological fluid component 12, thereby driving the moving cutter head module 3 to rotate.

[0023] As Figure 4As shown in the figure, the moving cutter head module 3 further includes a connecting rod 32. The upper end of the connecting rod 32 is connected with an upper end cover 36. The upper end cover 36 is connected with the limiting sleeve 2. The lower end of the connecting rod 32 is connected with a grounding contact 33. A grounding bar 34 is fixed on the surface of the connecting rod 32. The lower end of the grounding bar 34 is connected with the grounding contact 33, so that the connecting rod 32 can be connected through the grounding bar 34 and the grounding contact 33, further grounding the cutter head 312 and improving the insulation performance.

[0024] As Figure 3 shown in the figure, the moving cutter head group 31 includes a socket 311 and a cutter head 312. The cutter head 312 is fixed on the socket 311. The socket 311 is sleeved on the connecting rod 32, and the socket 311 is fixed on the connecting rod 32 with a fastener. Side holes are provided on the side surface of the insulating cylinder 35 to facilitate embedding the cutter head 312 into the side holes. Then, the connecting rod 32 is inserted into the insulating cylinder 35 from the lower end of the insulating cylinder 35, so that the connecting rod 32 is inserted into three sockets 311 distributed up and down at the same time, and the cutter head 312 is fixed on the connecting rod 32 with a fastener.

[0025] The moving cutter head 312 module 3 further includes an insulating cylinder 35. The insulating cylinder 35 is sleeved on the outside of the connecting rod 32. The grounding bar 34, the grounding contact 33 and the upper end cover 36 are all located inside the insulating cylinder 35. The connecting rod 32, the grounding bar 34, the grounding contact 33 and the upper end cover 36 are arranged in the insulating cylinder 35 to protect them and improve the insulation performance of the equipment.

[0026] As Figure 5 shown in the figure, the grounding bearing seat 4 includes a bearing seat 43, a bearing 42 and a spring finger 41. A limiting groove is provided at the bottom of the bearing seat 43. The bearing 42 is arranged in the limiting groove. A groove is formed on the inner wall of the bearing seat 43. The spring finger 41 is sleeved in the groove. Through the reliable connection between the spring finger 41 and the grounding contact 33, the grounding bearing seat 4 and the moving cutter head module 3 are reliably grounded, ensuring safety.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary earthing switch device, characterized in that: It includes a sealing device, a limit sleeve, a movable cutter head module and a grounding bearing seat which are arranged in sequence from top to bottom, the sealing device is installed on the top of the air box, the grounding bearing seat is installed on the bottom of the air box, the upper end of the movable cutter head module is connected to the sealing device through the limit sleeve, the lower end of the movable cutter head module is rotatably connected in the grounding bearing seat, the sealing device includes a rotating crank arm, the rotating crank arm is used to connect with the operating mechanism outside the air box, the movable cutter head module includes a movable cutter head group, and the movable cutter head group is used to connect with the static contact in the air box.

2. A rotary earthing switch device according to claim 1, characterized in that: The sealing device further comprises a magnetic fluid component and a cone pin, the rotating crank arm is fixed on the magnetic fluid component through the cone pin, and the rotating crank arm rotates together with the magnetic fluid component.

3. A rotary earthing switch device according to claim 1, characterized in that: The movable cutter head module also includes a connecting rod, the upper end of which is connected to an upper end cover, the lower end of which is connected to a grounding contact, a grounding bar is fixed on the surface of the connecting rod, and the lower end of the grounding bar is connected to the grounding contact.

4. A rotary earthing switch device according to claim 3, characterized in that: The movable cutter head assembly comprises a connecting sleeve and a cutter head, wherein the cutter head is fixed on the connecting sleeve, and the connecting sleeve is fixed on the connecting rod.

5. A rotary earthing switch device according to claim 3, characterized in that: The movable cutter head module further comprises an insulating cylinder, which is sleeved on the outside of the connecting rod, and the grounding bar, the grounding contact and the upper end cover are all located in the insulating cylinder.

6. A rotary earthing switch device according to claim 1, characterized in that: The grounding bearing seat includes a bearing seat, a bearing and a spring contact finger. A limiting groove is provided at the bottom of the bearing seat, and the bearing is arranged in the limiting groove. A groove is formed on the inner wall of the bearing seat, and the spring contact finger is inserted into the groove.

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