CN204596695U - Combined high pressure isolating switch - Google Patents

Abstract

The utility model provides a kind of combined high pressure isolating switch, by cross-arm support, longitudinal carrier, three-phase linked switch forms, described three-phase linked switch comprises the universal driving shaft be fixed on cross-arm support, be arranged on the operating grip in the middle part of universal driving shaft, be positioned at the link insulator be articulated and connected by crank with universal driving shaft below longitudinal carrier, be positioned at the isolation switch below link insulator, described isolation switch two ends are arranged on below longitudinal carrier by disconnecting link insulator, isolation switch one end and disconnecting link insulator adopt fixed contact to be connected, the other end and disconnecting link insulator adopt moving contact to be connected, described fixed contact, moving contact are all connected with cable by wiring insulator.Compared with prior art, the utility model adopts the mode of combined integratedization three-phase ganged, has simple to operate, safe and reliable, compact conformation, switch advantage flexibly.

Description

Combination high voltage isolating switch

technical field

The utility model relates to the technical field of power transmission, in particular to a combined high-voltage isolating switch for outdoor high-voltage power supply lines.

Background technique

In high-voltage overhead lines, the isolating switch plays the role of dividing and combining the voltage and no-load lines, so that visible fractures are generated between the lines, which is convenient for line switching and maintenance. Most of the existing isolating switches adopt the method of multi-cross-arm bracket distribution and single-pole switch operation. The multi-cross-arm bracket distribution uses more power fittings (power hardware accessories), high cost, complicated installation process, and cumbersome single-pole switch operation. And it is easy to generate the problem of arc short circuit between adjacent phases. In view of this, it is necessary to provide a new isolating switch to solve the above technical problems.

Contents of the invention

The technical problem solved by the utility model is to provide a combined high-voltage isolating switch, which adopts a combined and integrated three-phase linkage method, and has the advantages of simple operation, safety and reliability, compact structure and flexible switching.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a combined high-voltage isolating switch, which is characterized in that: a cross-arm bracket, three longitudinal brackets fixed on the cross-arm bracket and distributed perpendicularly to the cross-arm bracket, installed on The three-phase linkage switch on the longitudinal bracket consists of a linkage shaft fixed on the cross-arm bracket, an operating handle installed in the middle of the linkage shaft, and a tie rod insulator hingedly connected to the linkage shaft under the longitudinal bracket through a crank . The isolating knife switch located under the pull rod insulator. The two ends of the isolating knife switch are installed under the longitudinal support through the knife insulator. One end of the isolating knife switch is connected to the knife insulator by a static contact, and the other end is connected to the knife insulator by a moving contact. Head connection; the static contact and the moving contact are connected to the cable through the wiring insulator.

As a further improvement of the technical solution, an anti-drop booster spring device is provided above the linkage shaft.

As a further improvement of the technical solution, an arc extinguishing needle is provided outside the moving contact.

As a further improvement of the technical solution, there are two operating handles, and one end of the two operating handles is connected to the linkage shaft in a V-shaped distribution.

Compared with the prior art, the combined high-voltage isolating switch of the utility model has three-phase linkage when opening and closing the line,

The operation is simpler and quicker, which effectively solves the problem that the single-pole switch operation is easy to cause arc short-circuit between adjacent phases. Operating hours for workers to install and maintain. The anti-drop booster spring device can not only prevent the isolation switch from falling accidentally, but also play the role of booster for opening and closing, reducing the operating resistance of the operating handle. The arc extinguishing needle can realize the opening and closing operation under low load.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the combined high-voltage isolating switch of the present invention.

Fig. 2 is a schematic diagram of the side structure of the combined high-voltage isolating switch of the present invention.

The names of the corresponding parts in the figure are: 1 cross-arm bracket, 2 longitudinal bracket, 3 linkage shaft, 4 operating handle, 5 tie rod insulator, 6 isolation knife switch, 7 knife switch insulator, 8 static contact, 9 moving contact, 10 Wiring insulators, 11 cables, 12 anti-drop booster spring devices, 13 arc extinguishing pins.

Detailed ways

Please refer to Fig. 1 and Fig. 2, the utility model provides a combined high-voltage isolating switch, which consists of a cross-arm bracket 1, three longitudinal brackets 2 fixed on the cross-arm bracket and vertically distributed on the cross-arm bracket, installed on the longitudinal bracket The three-phase linkage switch consists of a linkage shaft 3 fixed on the cross-arm bracket, an operating handle 4 installed in the middle of the linkage shaft, and a tie rod insulator located under the longitudinal support and hinged to the linkage shaft through a crank. 5. The isolating knife switch 6 located under the pull rod insulator, the two ends of the isolating knife switch are installed under the longitudinal support through the knife switch insulator 7, one end of the isolating knife switch is connected to the knife switch insulator by a static contact 8, and the other end is connected to the knife switch The insulator is connected by a moving contact 9; the static contact and the moving contact are both connected to the cable 11 through the wiring insulator 10; an anti-falling booster spring device 12 is provided above the linkage shaft; Arc extinguishing pin 13.

The combined high-voltage isolating switch of the utility model is installed in the power supply line, and can realize installation methods such as horizontal installation, vertical installation, and upside-down installation, and the installation is flexible and convenient. The isolation knife switch 6 adopts a three-phase linkage opening and closing method, which is simpler and faster to operate, and effectively solves the problem that the single-pole switch operation is likely to cause arc short circuits between adjacent phases; the cross-arm support 1, the longitudinal support 2 and the three-phase linkage switch are integrated Combined design, small size and light weight, which greatly reduces the use of electric fittings, and reduces the operating time of workers for installation and maintenance.

The operating handle 4 is provided with two, and one end of the two operating handles is connected with the linkage shaft 3 to form a V-shaped distribution, which is more convenient to operate. In this embodiment, the anti-drop booster spring device not only prevents the isolation switch from accidentally falling, but also plays the role of booster for opening and closing, reducing the operating resistance of the operating handle. The arc extinguishing needle can realize the opening and closing operation under low load. Knife switch insulators and pull rod insulators use organic composite insulators, which not only reduces the weight of the switch, but also ensures its insulation level. The isolating knife switch 6, the static contact 8, and the moving contact 9 are made of high-quality copper, and the surface is silver-plated, which effectively reduces the main circuit resistance of the combined high-voltage isolating switch.

The above is only the preferred embodiment of the utility model, and is not intended to limit the utility model in any form. Any person familiar with the art can use the above disclosure without departing from the scope of the technical solutions of the utility model. Many possible changes and modifications are made to the technical solution of the utility model according to the content of the method, all of which belong to the protection scope of the claims.

Claims (4)

1. A combined high-voltage isolating switch, characterized in that: it is composed of a cross-arm support, 3 vertical supports fixed on the cross-arm support and vertically distributed on the cross-arm support, and a three-phase linkage switch installed on the longitudinal support. The three-phase linkage switch includes a linkage shaft fixed on the cross-arm bracket, an operating handle installed in the middle of the linkage shaft, a tie rod insulator located under the longitudinal support and hingedly connected to the linkage shaft through a crank, and an isolation knife switch located under the tie rod insulator. The two ends of the isolation knife are installed under the longitudinal support through the knife insulator, one end of the isolation knife is connected to the knife insulator by a static contact, and the other end is connected to the knife insulator by a moving contact; the static contact, the moving contact They are all connected to cables through wiring insulators. 2. The combined high-voltage isolating switch according to claim 1, characterized in that: an anti-drop booster spring device is provided above the linkage shaft. 3. The combined high-voltage isolating switch according to claim 2, characterized in that: an arc extinguishing needle is arranged outside the moving contact. 4. The combined high-voltage isolating switch according to claim 3, wherein there are two operating handles, and one end of the two operating handles is connected to the linkage shaft in a V shape.