CN219370884U

CN219370884U - Air environmental protection PT switch

Info

Publication number: CN219370884U
Application number: CN202222123177.3U
Authority: CN
Inventors: 曹红云; 顾明松; 范金华; 吴西辉; 耿志伟; 刘龙
Original assignee: Jiangsu Yisite Electric Power Technology Co ltd
Current assignee: Jiangsu Yisite Electric Power Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-07-18
Anticipated expiration: 2032-08-12

Abstract

The utility model relates to the technical field of PT switches, in particular to an air environment-friendly PT switch, which comprises a frame, an isolating shaft, a moving contact, a fixed contact, an insulator, a connecting copper bar and a grounding fixed contact, wherein three mutually independent insulators are fixedly arranged at the lower end of the frame, the connecting copper bar is respectively arranged at the free ends of the insulators, the isolating shaft is rotatably arranged in the middle of the frame, isolating shaft binding posts are arranged on the isolating shaft, isolating plates which are uniformly distributed are arranged on the isolating shaft binding posts and the corresponding connecting copper bar isolating shaft through connecting wires, and the moving contact is fixedly arranged at the free ends of the isolating plates.

Description

Air environmental protection PT switch

Technical Field

The utility model relates to the technical field of PT switches, in particular to an air environment-friendly PT switch.

Background

The isolation PT cabinet (environment-friendly gas-insulated ring main unit) is generally directly connected with a main bus to detect bus voltage and play a role in real-time protection, and the main bus, an isolation knife, a PT copper bar, a lightning arrester, a fuse, an insulator and the like are generally installed in the isolation PT cabinet.

PT switches are an important component in PT cabinets. At present, the vacuum load switch body commonly used in the market has a complex structure, a heavy volume and troublesome installation. Therefore, we propose an air environment-friendly PT switch which is easy to operate and good in safety performance.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides an air environment-friendly PT switch.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an air environmental protection PT switch, includes frame, isolating shaft, moving contact, static contact, insulator, connection copper bar and ground connection static contact, the lower extreme fixed mounting of frame is three mutually independent the insulator, the free end of insulator is all installed connect the copper bar, the isolating shaft rotates the middle part that sets up at the frame, be provided with the isolating shaft terminal on the isolating shaft, the isolating shaft terminal passes through the connecting wire and is connected with the copper bar that corresponds, be provided with evenly distributed's division board on the isolating shaft, the fixed moving contact that is provided with of free end of division board, the inside of division board is provided with the wire with moving contact and isolating shaft terminal intercommunication, the moving contact with the static contact looks adaptation, the moving contact still with ground connection static contact looks adaptation, the moving contact with the ground connection static contact is located the starting point and the terminal of moving contact motion trail.

Preferably, the upper end of the frame is fixedly provided with an isolation static contact box, an opening of the isolation static contact box faces to the isolation shaft, and the moving contact is fixedly arranged on the inner wall of the isolation static contact box.

Preferably, the inner wall of the isolation static contact box is also provided with a static contact binding post.

Preferably, a grounding row is fixedly arranged at the lower end of the frame, and the grounding row is electrically connected with the grounding static contact.

Preferably, the isolating shaft is provided with uniformly distributed grooves, and the isolating shaft binding posts are positioned on the inner walls of the grooves.

The beneficial effects of the utility model are as follows: in this PT switch, through rotating the separation axle, change the position of moving contact, can combine moving contact with static contact or ground connection static contact respectively, realize the break-make of circuit, keep apart the arc that the static contact box can produce when closing the switch and carry out the arc extinction, improve the security of device, whole device compact structure, small is fit for using widely.

Drawings

Fig. 1 is a schematic perspective view of an air environment-friendly PT switch according to the present utility model;

fig. 2 is a schematic diagram of a front view structure of an air environment-friendly PT switch according to the present utility model;

FIG. 3 is a schematic diagram of the structure of A-A in FIG. 2 of an air-friendly PT switch according to the present utility model;

fig. 4 is a schematic top view of an air environment-friendly PT switch according to the present utility model.

In the figure: 1 a frame, 2 isolating shafts, 3 isolating plates, 4 moving contacts, 5 isolating static contact boxes, 6 static contact binding posts, 7 static contacts, 8 insulators, 9 connecting copper bars, 10 connecting wires, 11 grounding bars and 12 grounding static contacts.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, an air environment-friendly PT switch comprises a frame 1, an isolating shaft 2, a moving contact 4, a fixed contact 7, an insulator 8, a connecting copper bar 9 and a grounding fixed contact 12, wherein three mutually independent insulators 8 are fixedly installed at the lower end of the frame 1, the connecting copper bar 9 is installed at the free end of each insulator 8, the isolating shaft 2 is rotatably arranged in the middle of the frame 1, isolating shaft binding posts are arranged on the isolating shaft 2 and are connected with the corresponding connecting copper bar 9 through connecting wires 10, an isolating plate 3 which is uniformly distributed is arranged on the isolating shaft 2, the moving contact 4 is fixedly arranged at the free end of the isolating plate 3, wires which are used for connecting the moving contact 4 with the isolating shaft binding posts are arranged in the isolating plate 3, the moving contact 4 is matched with the fixed contact 7, the moving contact 4 is also matched with the grounding fixed contact 12, and the fixed contact 7 and the grounding fixed contact 12 are positioned at the starting point and the end point of the moving track of the moving contact 4.

The upper end of the frame 1 is fixedly provided with an isolation static contact box 5, an opening of the isolation static contact box 5 faces the isolation shaft 2, and the movable contact 4 is fixedly arranged on the inner wall of the isolation static contact box 5.

The inner wall of the isolation static contact box 5 is also provided with a static contact binding post 6.

The lower end of the frame 1 is fixedly provided with a grounding row 11, and the grounding row 11 is electrically connected with a grounding static contact 12.

The isolating shaft 2 is provided with evenly distributed grooves, and the isolating shaft binding posts are positioned on the inner walls of the grooves.

In the PT switch, the position of the moving contact 4 is changed by rotating the isolating shaft 2, the moving contact 4 can be respectively combined with the fixed contact 7 or the grounding fixed contact 6, the on-off of a circuit is realized, and the isolating fixed contact box 5 can be used for extinguishing an arc generated during closing.

The frame 1 is fixed in the airtight box body of the environment-friendly gas-insulated ring main unit, and the end part of the isolating shaft 2 and the sealing rotating device of the airtight box body of the ring main unit.

The fixed contact 7 in the isolation fixed contact box 5 is fastened through an ejection wire sleeve of the ejection flexible connection environment-friendly gas insulation ring main unit, and is connected with the outside in an electrified manner.

The grounding row 11 connected with the grounding static contact 12 is connected with an outlet sleeve of the environment-friendly gas-insulated ring main unit through an insulated lower bus to form an electrified connection with the outside.

Specific: in the power transmission procedure: the lower door of the environment-friendly gas-insulated ring main unit is closed, and then a three-station isolation mechanism is operated to separate the isolation shaft 2 (the movable contact 4 at the end part of the isolation shaft 2) from the grounding fixed contact 12; then, a three-station isolation mechanism is operated to enable the isolation shaft 2 (the movable contact 4 at the end part of the isolation shaft 2) and the fixed contact 7 in the isolation fixed contact box 5 to be switched on in place; then closing is completed.

In the power failure program: firstly, completing brake separation; then, a three-station isolation mechanism is operated to enable the isolation shaft 2 (the movable contact 4 at the end part of the isolation shaft 2) to be separated from the fixed contact 7 in the isolation fixed contact box 5; and then, the three-station isolation mechanism is continuously operated, so that the isolation shaft 2 (the movable contact 4 at the end part of the isolation shaft 2) and the grounding static contact 12 are in place, the power failure procedure is completed, and the overhaul work can be safely carried out.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides an air environmental protection PT switch, includes frame (1), (2) movable contact (4), static contact (7), insulator (8), connects copper bar (9) and ground connection static contact (12), a serial communication port, the lower extreme fixed mounting of frame (1) three mutually independent insulator (8), all install the free end of insulator (8) connect copper bar (9), the rotation of (2) sets up the middle part in frame (1), be provided with the isolation axle terminal on (2) of isolating, be connected with corresponding connection copper bar (9) through connecting wire (10) the isolation axle terminal, be provided with evenly distributed's division board (3) on (2) of isolating board, the fixed wire that is provided with movable contact (4) and isolation axle terminal intercommunication of free end of division board (3), movable contact (4) with static contact (7) looks adaptation, movable contact (4) still with ground connection copper bar (9) are located movable contact (12) moving track (12) and static contact (12) looks.

2. The air environment-friendly PT switch according to claim 1, wherein an isolation static contact box (5) is fixedly arranged at the upper end of the frame (1), an opening of the isolation static contact box (5) faces to the isolation shaft (2), and the moving contact (4) is fixedly arranged on the inner wall of the isolation static contact box (5).

3. An air environment-friendly PT switch according to claim 2, wherein the inner wall of the isolating static contact box (5) is further provided with a static contact terminal (6).

4. An air environment-friendly PT switch according to claim 1, wherein a grounding bar (11) is fixedly arranged at the lower end of the frame (1), and the grounding bar (11) is electrically connected with the grounding static contact (12).

5. An air environment-friendly PT switch according to claim 1, wherein the isolating shaft (2) is provided with uniformly distributed grooves, and the isolating shaft binding posts are located on the inner walls of the grooves.