CN216671424U

CN216671424U - Compact switching device

Info

Publication number: CN216671424U
Application number: CN202123010064.4U
Authority: CN
Inventors: 卢月虹
Original assignee: Beijing Hezong Science & Technology Co ltd
Current assignee: Hezong Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-06-03
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a compact switch device, which integrates an isolating switch and a circuit breaker, fixes the isolating switch and the circuit breaker on an insulating side plate by using a static end insulating fixing plate, avoids the influence of vibration generated in the switching-on and switching-off process on the service life, and elastically clamps the two ends of the static end insulating fixing plate by using clamping pieces, and has the advantages that: the integrated design of the isolation and the breaker can effectively reduce the occupied space of the switch, save materials and processing cost, meet the requirement of insulating property, relieve the vibration in the on-off process of the switch and enable the switch to be in smooth transition.

Description

Compact switching device

Technical Field

The utility model relates to a power distribution switch, in particular to a compact switch device.

Background

The breaker has an arc extinguishing function, normal load current can be cut off, short-circuit current can also be cut off, however, in order to guarantee maintenance and overhaul safety, a disconnecting switch with an obvious fracture is installed on the basis of the breaker, a main line is isolated if necessary, and the breaker has important significance on safety and reliability of a power grid. Meanwhile, in order to make the reasonable use of the building area, the miniaturization of products is gradually becoming a trend.

The existing circuit breaker and the isolating switch are two switch bodies with relatively independent structures, are respectively responsible for the functions of load, short circuit breaking and safety fracture, and are placed into a switch air chamber, so that the occupied space is large, the switch cabinet is overlarge, and the requirement of miniaturization of a distribution switch is not met.

The utility model adopts the integrated design of the isolation and the circuit breaker, selects the static end insulating fixing plate, and simultaneously installs and fixes the isolation switch and the circuit breaker, thereby respectively reducing the side fixing structures of the isolation switch and the circuit breaker and connecting buses therebetween, reducing the circuit breaker isolation switch with the normal size by 30 percent, effectively reducing the material cost and the processing cost, and being beneficial to environmental protection. Meanwhile, the switch is easier to mount due to the reduction of the volume and the weight, the occupied space of the switch cabinet is saved on the basis of meeting the switch performance, the material cost is saved, and the mounting time is shortened.

Disclosure of Invention

In order to realize the miniaturization of the switch body, meet the requirements of electric energy transmission, breaking and isolation and simultaneously avoid the insulation problem caused by compact structure and miniaturization, the utility model provides a compact switch device, which reduces the size of a switch, reduces the material cost and the processing cost, optimizes the insulation performance and realizes the effective utilization of space.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a compact switchgear, isolator static contact and circuit breaker vacuum interrupter, fix on a quiet end insulation fixed plate simultaneously, vibration that the moving contact for avoiding vacuum circuit breaker to cut off or isolator produced at rotatory in-process produces harmful effects to the wholeness ability, this structure adopts dual fixed locking technique, make the switch at the in-process level and smooth transition of cutting off next state, adopt the mode of clamping to install on the insulation side board with insulation fixed plate promptly on the one hand, on the other hand locks with flexible fastener for insulation fixed plate both sides, avoid increaseing insulation side board distance because of the vibration, lead to the vibration further to increase.

The compact switch device comprises an isolating switch and a circuit breaker, wherein an isolating static contact of the isolating switch is connected with a vacuum arc extinguish chamber of the circuit breaker through a fastening bolt and is fixed on a static end insulating fixing plate, and the static end insulating fixing plate is fixed on two insulating side plates through clamping pieces.

In the compact switch device, the isolating switch is directly connected with the vacuum arc extinguish chamber of the circuit breaker through the isolating static contact.

According to the compact switch device, the isolation static contact is located between the static end insulation fixing plate and the vacuum arc extinguish chamber and penetrates through the center square hole of the static end insulation fixing plate, and the static end insulation fixing plate, the isolation static contact and the vacuum arc extinguish chamber are sequentially fixed through the fastening bolt.

Above-mentioned compact switchgear, quiet end insulation fixed plate both sides set up the ear, pass insulating curb plate and pass the quiet end insulation fixed plate of ear square hole locking with the fastener.

In the compact switch device, the clamping piece adopts a triangular claw-shaped structure with three positions and two planes, and the static end insulating fixing plate is clamped from the outer sides of the two insulating side plates.

Compared with the prior art, the utility model has the advantages that: the isolation and circuit breaker are integrally designed, so that the occupied space of the switch can be effectively reduced, the material and the processing cost are saved, the requirement on the insulating property is met, the vibration in the on-off process of the switch is relieved, and the switch is in smooth transition.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of a stationary end insulation fixing plate according to the present invention;

fig. 3 is a schematic diagram of the structure of the card member of the present invention.

In the figure: 1. an isolating switch; 2. isolating the static contact; 3. fastening a bolt; 4. a stationary end insulation fixing plate; 4-1, a central square hole;

4-2, ear; 5. a fastener; 6. a vacuum arc-extinguishing chamber; 7. an insulating side plate; 8. a circuit breaker.

Detailed Description

As shown in fig. 1, the present invention relates to a compact switchgear, the integrated design of a disconnector and a crowbar. With isolator static contact and circuit breaker vacuum interrupter, fix simultaneously on the quiet end insulating fixed plate of one, vibration that the moving contact for avoiding vacuum circuit breaker to cut off or isolator produced at rotatory in-process produces the harmful effects to the wholeness ability, this structure adopts dual fixed locking technique, make the switch at the in-process smooth transition of cutting off next state, adopt the mode of clamping to install on insulating curb plate promptly with insulating fixed plate on the one hand, on the other hand is with the fastener locking for insulating fixed plate both sides, avoid increaseing insulating curb plate distance because of the vibration, lead to the vibration further to increase.

The switch device comprises an isolating switch 1 and a circuit breaker 8, wherein an isolating static contact 2 of the isolating switch 1 is connected with a vacuum arc extinguish chamber 6 of the circuit breaker 8 through a fastening bolt 3 and is fixed on a static end insulating fixing plate 4, and the static end insulating fixing plate 4 is fixed on two insulating side plates 7 through a clamping piece 5.

In the compact switch device, the isolating switch 1 is directly connected with the vacuum arc extinguish chamber 6 of the circuit breaker 8 through the isolating static contact 2. The direct connection mode saves an installation beam and a connection bus bar on the connection side of the circuit breaker 8 and the isolating switch 1, saves materials, shortens the processing time and avoids the problems of insulation discharge, partial discharge and the like which are possibly generated.

In the compact switch device, the isolation static contact 2 is positioned between the static end insulation fixing plate 4 and the vacuum arc-extinguishing chamber 6, passes through the central square hole 4-1 of the static end insulation fixing plate 4, and sequentially fixes the static end insulation fixing plate 4, the isolation static contact 2 and the vacuum arc-extinguishing chamber 6 through the fastening bolt 3. The vacuum arc extinguish chamber 6 of the circuit breaker 8 directly contacts with the isolation static contact 2, and can vibrate in the opening and closing processes of the circuit breaker 8 and the isolation switch 1 to cause undesirable problems such as phase displacement, the static end insulation fixing plate 4 is used as a connecting piece to be fixed on the insulation side plate 7, and flexible clamping is carried out by the clamping piece 5, so that the position is fixed to avoid moving, and vibration is effectively buffered on the other hand.

As shown in figure 2, in the compact switch device, lugs 4-2 are arranged on two sides of a fixed insulating plate 4 at the static end, penetrate through an insulating side plate 7 and are locked by a clamping piece 5 through square holes 4-2 at the static end, and the fixed insulating plate 4 is fixed on the static end through the clamping piece. The width of the ear part 4-2 is smaller than that of the stationary end insulating fixing plate 4, the ear part 4-2 penetrates through the mounting hole of the insulating side plate 7 to achieve the limiting effect, and four corners of the mounting hole of the clamping part 5 on the ear part 4-2 are provided with abdicating process grooves to avoid clamping plugs and facilitate mounting.

As shown in fig. 3, in the compact switchgear, the clamping member 5 adopts a three-position two-plane triangular claw structure, and clamps the stationary-end insulating fixing plate 4 from the outer sides of the two insulating side plates 7. The clamping piece 5 is made of a polyformaldehyde material, the material is a thermoplastic material, the strength of the clamping piece is similar to that of metal, the clamping piece has good self-lubricating property and fatigue resistance, is rich in elasticity, and can be frequently disassembled and assembled to maintain the performance without being damaged. This fastener 5 passes through quiet end insulating fixed plate 4 of triangle claw type structure centre gripping, at the quiet end insulating fixed plate 4 of chucking, avoids it along the gliding of perpendicular insulating curb plate 7 direction, for preventing that fastener 5 drops because of any reason, wherein middle claw can swing in the certain limit owing to the material characteristic to block into quiet end insulating fixed plate 4 smoothly, then the quiet end insulating fixed plate 4 of reconversion chucking.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model should fall within the protection scope of the utility model.

Claims

1. The compact switch device is characterized by comprising an isolating switch (1) and a circuit breaker (8), wherein an isolating static contact (2) of the isolating switch (1) is connected with a vacuum arc extinguish chamber (6) of the circuit breaker (8) through a fastening bolt (3) and fixed on a static end insulating fixing plate (4), and the static end insulating fixing plate (4) is fixed on two insulating side plates (7) through a clamping piece (5).

2. A compact switchgear arrangement, according to claim 1, characterized in that said disconnector (1) is directly connected to the vacuum interrupter (6) of the circuit breaker (8) via a stationary isolating contact (2).

3. The compact switchgear device according to claim 1, wherein the isolating static contact (2) is located between the static end insulating fixing plate (4) and the vacuum interrupter (6), and passes through a central square hole (4-1) of the static end insulating fixing plate (4), and the static end insulating fixing plate (4), the isolating static contact (2) and the vacuum interrupter (6) are sequentially fixed by a fastening bolt (3).

4. A compact switchgear as claimed in claim 1, wherein said stationary insulating plate (4) is provided with lugs (4-2) on both sides, and said stationary insulating plate (4) is passed through said insulating side plates (7) and locked by said locking members (5) through said lugs (4-2).

5. A compact switchgear according to claim 1, characterized in that said latch (5) is a three-position two-plane triangular claw structure, clamping the stationary insulating fixed plate (4) from the outside of the two insulating side plates (7).