CN206516553U - A kind of gas-insulated switchgear disconnecting switch - Google Patents

Abstract

The utility model discloses an isolating switch for gas insulated switchgear, which relates to the field of power transmission and distribution equipment in a power system, and comprises a frame. The frame includes a vertical plate and side plates at both ends of the vertical plate. There are a number of upper insulators on the upper fixing plate, and a number of corresponding lower insulators on the lower fixing plate. The other end of the upper insulator is provided with a static contact seat, and a main shaft is provided between the two side plates. , the main shaft includes a horizontal shaft and a bracket, the two ends of the horizontal shaft are fixed on the side plates, the top of the bracket is provided with an isolated movable contact, and the static contact corresponds to the isolated movable contact one by one. The isolating switch adopts modular design to form standardized functional units and standardized products, which is convenient for spare parts, spare parts and large-scale factory prefabricated production organization; greatly improves product production efficiency.

Description

Disconnect switch for gas insulated switchgear

technical field

The utility model relates to the field of power transmission and distribution equipment in a power system, in particular to an isolating switch for gas insulated switchgear.

Background technique

my country's power supply and distribution products have experienced the development of the four major structures of oil insulation, air insulation, gas insulation, and solid insulation, and the performance of the products has also been continuously improved. From the current situation of the products, the most widely used products are the two series of SF6 gas insulation products and solid insulation products, both of which are small in size and excellent in insulation and arc extinguishing performance. However, the ever-increasing call for environmental protection has given rise to green and environmentally friendly solutions.

SF6 gas in SF6 gas insulation products is a non-degradable greenhouse gas. In the "Kyoto Protocol", SF6 gas is one of the restricted greenhouse gases. At present, the application of SF6 gas is being reduced as much as possible at home and abroad. Compared with SF6 products, solid insulation products have the same volume and do not use SF6 gas, so they have great advantages in environmental protection. However, because more than 50% of the product is made of epoxy resin, epoxy resin cannot be recycled after the service life of the product is over, and can only be used as building filler, and it consumes a lot of electricity when processing solid poles, which is a high-energy product. The production type of power consumption, and now the technical problems of solid insulation and pole surface coating grounding in China have not been completely solved, so the use of solid insulation products may also be gradually reduced.

Therefore, the product of the utility model can not only meet the insulation performance of SF6 and solid insulation, but also meet the requirement of small volume. As one of the core components of the switchgear, the isolating switch must be able to reflect its adaptability and versatility, small size, environmental protection, high performance, integration, and standardization. It is convenient for parts, spare parts and large-scale Factory prefabricated production organization.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a modularized, simple and reasonable structure, low cost, small size, safe and reliable, environmentally friendly, suitable for dry air insulation products matching gas insulated switchgear isolation switch.

The technical problem solved by the utility model can be realized by adopting the following technical solutions: a disconnector switch for gas insulated switchgear, including a frame, wherein the frame includes a vertical plate and side plates at both ends of the vertical plate, and on one side surface of the vertical plate There are an upper fixed plate and a lower fixed plate. There are a number of upper insulators on the upper fixed plate, and a number of corresponding lower insulators on the lower fixed plate. The other end of the upper insulator is provided with a static contact seat. There is a main shaft between them. The main shaft includes a horizontal shaft and a bracket. The two ends of the horizontal shaft are fixed on the side plates. The top of the bracket is provided with an isolated movable contact, and the static contact corresponds to the isolated movable contact.

Preferably, the cross-section of the side plate is triangular, the bottom of the side plate is provided with a connecting plate, and the connecting plate is provided with a plurality of grounding contacts corresponding to the isolated moving contacts one by one.

Preferably, the horizontal shaft is integrally processed with the bracket.

Preferably, the isolating movable contact is sleeved on the bracket, and the isolating movable contact is mounted on the bracket through a disc spring.

Preferably, both ends of the horizontal shaft are connected to the side plates through nylon sleeves, and a support frame is provided at the bottom of the horizontal shaft.

The beneficial effect is: the isolating switch adopts modular design to form standardized functional units and standardized products, which is convenient for spare parts, spare parts and large-scale factory prefabricated production organization; and greatly improves product production efficiency. The product is designed for environmental protection, which can not only replace SF6 products, but also replace the application of solid insulation products, and promote the development of environmentally friendly production and use of power products. The isolating switch forms an integral module and is installed in the box of the switch cabinet, and the work position is switched through the upper insulator and the lower insulator. The main shaft is an integrated design of the horizontal shaft and the bracket, which can meet the requirements of insulation and transmission at the same time, and has high reliability. In addition, the isolating moving contact is installed with a disc spring, so that the disc spring provides sufficient contact pressure for the isolating switch.

Description of drawings

Fig. 1 is a front view of a disconnector for a gas insulated switchgear of the present invention;

Fig. 2 is a top view of an isolating switch for a gas insulated switchgear of the present invention;

Fig. 3 is a side view of an isolating switch for a gas insulated switchgear of the present invention;

1, frame; 2, vertical plate; 3, side plate; 4, upper fixed plate; 5, lower fixed plate; 6, upper insulator; 7, lower insulator; 8, static contact seat; 9, main shaft; 10, horizontal Shaft; 11, bracket; 12, isolated moving contact; 13, disc spring; 14, connecting plate; 15, ground contact seat; 16, nylon sleeve; 17, support frame.

detailed description

Preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

Figure 1, Figure 2 and Figure 3 show a specific embodiment of a disconnector for gas insulated switchgear of the present invention: a disconnector for gas insulated switchgear, including a frame 1, wherein the frame 1 includes a vertical plate 2 and The side plates 3 at the two ends of the vertical plate 2 are provided with an upper fixed plate 4 and a lower fixed plate 5 on one side surface of the vertical plate 2. The upper fixed plate 4 is provided with some upper insulators 6, and the lower fixed plate 5 is provided with some phase insulators. The corresponding lower insulator 7, wherein the other end of the upper insulator 6 is provided with a static contact seat 8, a main shaft 9 is provided between the two side plates 3, the main shaft 9 includes a horizontal shaft 10 and a bracket 11, and the two ends of the horizontal shaft 10 are fixed On the side plate 3 , the top of the bracket 11 is provided with an isolated movable contact 12 , and the static contact corresponds to the isolated movable contact 12 one by one.

It is worth noting that the cross-section of the side plate 3 is triangular, the bottom of the side plate 3 is provided with a connecting plate 14, and a plurality of grounding contact seats 15 are arranged on the connecting plate 14, and the grounding contact seats 15 and the isolated movable contact 12 one-to-one correspondence. The transverse shaft 10 and the bracket 11 are integrally formed. The isolated movable contact 12 is sleeved on the bracket 11 , and the isolated movable contact 12 is mounted on the bracket 11 through a disc spring 13 . Both ends of the horizontal shaft 10 are connected to the side plate 3 through nylon sleeves 16 , and a support frame 17 is provided at the bottom of the horizontal shaft 10 .

The isolating switch has three upper insulators 6 and three lower insulators 7, which form a three-phase structure and are vertically arranged on the frame 1. Both the upper insulators 6 and the lower insulators 7 use dry air as the insulating medium, which is environmentally friendly. The static contact seat 8, the isolated east contact seat and the ground contact seat 15 form three stations of closing-opening-grounding. Manual or electric operation can be used between closing and opening stations, and only manual operation can be used between opening and grounding stations. The movable contact of the disconnector adopts a rotating shaft design to meet the spring mechanism operation of the grounding station. It meets the national standard requirements that the earthing switch has the ability to make.

In addition, the upper insulator 6 and the corresponding lower insulator 7 are located on different vertical planes, and the shortest insulation distance between phases and relative grounds is not greater than 80mm.

Based on the above, the isolating switch adopts modular design to form standardized functional units and standardized products, which is convenient for spare parts, spare parts and large-scale factory prefabricated production organization; greatly improves product production efficiency. The product is designed for environmental protection, which can not only replace SF6 products, but also replace the application of solid insulation products, and promote the development of environmentally friendly production and use of power products. An integral module is formed on the isolating switch and installed in the box of the switch cabinet, and the switching of the station is performed through the upper insulator 6 and the lower insulator 7 . The main shaft 9 is an integrated design of the horizontal shaft 10 and the bracket 11, which can meet the requirements of insulation and transmission at the same time, and has high reliability. In addition, the isolating movable contact 12 is installed with a disc spring 13, so that the disc spring 13 provides sufficient contact pressure for the isolating switch.

The above descriptions are only embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (5)

1. a kind of gas-insulated switchgear disconnecting switch, including framework, it is characterised in that：The framework include riser and The side plate at riser two ends a, side surface of riser is provided with upper mounted plate and bottom plate, and upper mounted plate is provided with some exhausted Edge, bottom plate is provided with some corresponding lower insulators, wherein the other end of upper insulator is provided with static contact seat, two sides Being provided between plate on main shaft, main shaft includes transverse axis and support, and the two ends of transverse axis are fixed on side plate, and the top of support is provided with isolation Moving contact, static contact is corresponded with isolating moving contact.

2. a kind of gas-insulated switchgear disconnecting switch according to claim 1, it is characterised in that：The horizontal stroke of the side plate Section is triangle, and the bottom of side plate is provided with connecting plate, and connecting plate is provided with some ground contact seats, and ground contact seat isolates dynamic touch with described Head is corresponded.

3. a kind of gas-insulated switchgear disconnecting switch according to claim 1, it is characterised in that：The transverse axis and institute State support and be integrated processing formation.

4. a kind of gas-insulated switchgear disconnecting switch according to claim 1, it is characterised in that：The isolation is dynamic to touch Headgear connects on the bracket, and isolation moving contact is rack-mount by disc spring.

5. a kind of gas-insulated switchgear disconnecting switch according to claim 1, it is characterised in that：The two of the transverse axis End is connected on the side plate by nylon jacket, and the bottom of transverse axis is provided with support frame.