CN214336624U

CN214336624U - Novel three-phase isolation grounding switch

Info

Publication number: CN214336624U
Application number: CN202120572779.XU
Authority: CN
Inventors: 颜超; 李振涛; 李国宾; 孙绪明; 赵强; 赵守国; 李友前
Original assignee: Shandong Taikai Testing Co ltd
Current assignee: SHANDONG TAIKAI POWER ELECTRIC Co.,Ltd.
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-10-01
Anticipated expiration: 2031-03-19

Abstract

The utility model provides a novel three-phase isolation earthing switch, include: the GIS box body is provided with three groups of isolating and grounding switch assemblies, the top of the GIS box body is provided with a current conducting plate, and the bottom of the GIS box body is provided with three equidistant and spaced outlet terminals; the isolation earthing switch assembly includes: the rotary hand wheel, the grounding push rod, the insulating rod, the moving contact and the transmission assembly are arranged in the box body, the transmission assembly is fixedly connected to the wire outlet terminal, and the moving contact is fixedly connected to the transmission assembly; the outer wall of the GIS box body is provided with a rotary guide hole and a push-pull guide hole, a rotary hand wheel is arranged outside the GIS box body and fixedly installed at the first end of an insulating rod, and the second end of the insulating rod penetrates through the rotary guide hole and then is in rotary connection with a transmission assembly; one end of the grounding push rod is arranged in the GIS box body, and the other end of the grounding push rod is arranged in the GIS box body through the push-pull guide hole. The utility model discloses can realize three-phase circuit high voltage isolator's effect simultaneously.

Description

Novel three-phase isolation grounding switch

Technical Field

The utility model relates to a power equipment's isolator equipment field, more specifically the utility model relates to a novel three-phase isolation earthing switch that says so.

Background

The isolating switch is a switch device which is mainly used for isolating a power supply and switching over, communicating and cutting off a small current circuit and has no arc extinguishing function. The high-voltage isolating switch is generally used as a high-voltage isolating switch, namely an isolating switch with rated voltage of more than 1kV, the high-voltage isolating switch has a simple working principle and structure, but has high requirements on working reliability due to large usage amount, and has large influence on the design, establishment and safe operation of a substation and a power plant.

At present, as most domestic isolating switches are of closed structures, the positions of internal structures cannot be observed obviously from the outside. Meanwhile, the three-phase isolation grounding switch needs three GIS boxes to be placed side by side, the occupied area is large, and the operation is inconvenient. This results in a single function of the disconnector, with limited functionality and limited range of applications. In addition, the structure of a transmission assembly for realizing switching action of the existing isolating switch is relatively complex, and after the isolating switch is used for a long time, the phenomena of loosening and clamping of individual parts easily occur, so that the hidden trouble of not-in-place closing exists.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a novel three-phase isolation earthing switch.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme: a novel three-phase isolating grounding switch comprising: the GIS box body is provided with three groups of isolating and grounding switch assemblies, the top of the GIS box body is provided with a current conducting plate, and the bottom of the GIS box body is provided with three equidistant and spaced outlet terminals; the isolation earthing switch assembly includes: the rotary hand wheel, the grounding push rod, the insulating rod, the moving contact and the transmission assembly are arranged in the box body, the transmission assembly is fixedly connected to the wire outlet terminal, and the moving contact is fixedly connected to the transmission assembly; the outer wall of the GIS box body is provided with a rotary guide hole and a push-pull guide hole, a rotary hand wheel is arranged outside the GIS box body and fixedly installed at the first end of an insulating rod, the second end of the insulating rod penetrates through the rotary guide hole and then is in rotary connection with a transmission assembly, and the transmission assembly is controlled by rotating the rotary hand wheel to drive a moving contact to move in the vertical direction so as to complete opening and closing actions with a current conducting plate; one end of the grounding push rod is arranged outside the GIS box body, and the other end of the grounding push rod is arranged in the GIS box body through a push-pull guide hole and used for completing the opening and closing actions with the transmission assembly through transverse push-pull.

Further, the transmission assembly includes: the device comprises a support, a linkage plate and a gear, wherein the support is vertically connected to a wire outlet terminal, the support is provided with a vertical sliding groove, the linkage plate is installed on the support through the vertical sliding groove, and a moving contact is fixedly connected to the top of the linkage plate; the insulating rod is characterized in that a bar-shaped guide hole and a vertical rack are formed in the linkage plate, the bar-shaped guide hole is vertically formed in the linkage plate, the vertical rack is arranged on one side of the bar-shaped guide hole, the gear is meshed with the vertical rack, and the second end of the insulating rod sequentially penetrates through the support and the bar-shaped guide hole to be fixedly connected with the gear. The transmission assembly is in meshed transmission through the gear rack, when the rotating hand wheel is rotated, the insulating rod drives the gear to rotate, the vertical rack is made to move up and down, then opening and closing actions of the moving contact and the current conducting plate are achieved, the phenomenon that the moving contact and the current conducting plate are loosened and clamped is not prone to occurring by the aid of the transmission structure, and the transmission assembly is simple, reasonable and easy to maintain.

Furthermore, an observation window is arranged on the side wall of the GIS box body, so that the position of the moving contact can be checked in real time.

Furthermore, a basin-type insulator is arranged right above the GIS box body, and the current conducting plate is fixedly connected to the bottom of the basin-type insulator.

Further, the push-pull guiding hole is arranged right below the rotary guiding hole, and sealing rings are arranged in the push-pull guiding hole and the rotary guiding hole, so that the whole switch is integrated in the GIS box body and is insulated by SF6 gas.

Furthermore, three isolated grounding switch assemblies are arranged on the same side of the GIS box body, and the observation window is arranged on the side wall of the GIS box body relative to the isolated grounding switch assemblies, so that the three switches can be observed conveniently.

Contrast prior art, the utility model discloses beneficial effect lies in: the utility model provides a novel three-phase isolation earthing switch, with three routes isolation earthing switch subassembly integration in an inclosed GIS box, each way isolation earthing switch subassembly all rotates insulating rod control moving contact through rotatory hand wheel and removes, realizes highly compressed branch and closes to adopt the flexible of ground connection push rod, realize keeping apart the sword under the operating mode of branch, the closing of ground connection sword.

The utility model discloses realized three-phase circuit high voltage isolator's effect simultaneously, can keep apart high pressure 600 KV. The switch action is realized by manual rotation and push-pull, and the operation is simple and reliable. The transmission structure has the advantages of ingenious design, simple structure and reliable action.

Therefore, compared with the prior art, the utility model has the substantive characteristics and the progress, and the beneficial effects of the implementation are also obvious.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural diagram of the transmission assembly of the present invention.

In the drawings, each reference numeral denotes:

1, a GIS box body; 2. an isolation grounding switch assembly; 3. a conductive plate; 4. an outlet terminal; 5. rotating a hand wheel; 6. a grounding push rod; 7. an insulating rod; 8. a moving contact; 9. a transmission assembly; 10. rotating the guide hole; 11. push-pull guiding holes; 12. an observation window; 13. a basin-type insulator; 91. a support; 92. a linkage plate; 93. a gear; 94. a vertical chute; 95. a strip-shaped guide hole; 96. a vertical rack.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

A novel three-phase isolating grounding switch as shown in fig. 1-2, comprising: GIS box 1, GIS box 1's homonymy is equipped with three isolated ground switch subassemblies 2 of group, is equipped with basin formula insulator 13 directly over GIS box 1, and GIS box 1 top is equipped with current conducting plate 3, and current conducting plate 3 fixed connection is in basin formula insulator 13 bottom. The bottom of the box body is provided with three outlet terminals 4 at equal intervals. An observation window 12 is arranged on the side wall of the GIS box 1, and the observation window 12 is arranged on the side wall of the GIS box 1 opposite to the isolation grounding switch component 2.

The isolation earthing switch assembly 2 comprises: the device comprises a rotary hand wheel 5, a grounding push rod 6, an insulating rod 7, a moving contact 8 and a transmission assembly 9, wherein the insulating rod 7, the moving contact 8 and the transmission assembly 9 are all arranged in a box body, the transmission assembly 9 is fixedly connected to a wire outlet terminal 4, and the moving contact 8 is fixedly connected to the transmission assembly 9; the outer wall of the GIS box body 1 is provided with a rotary guide hole 10 and a push-pull guide hole 11, the push-pull guide hole 11 is arranged right below the rotary guide hole 10, and sealing rings are arranged in the push-pull guide hole 11 and the rotary guide hole 10. The rotating hand wheel 5 is arranged outside the GIS box body 1, the rotating hand wheel 5 is fixedly arranged at the first end of the insulating rod 7, the second end of the insulating rod 7 penetrates through the rotating guide hole 10 and then is rotatably connected with the transmission assembly 9, the transmission assembly 9 is controlled by rotating the rotating hand wheel 5 to drive the moving contact 8 to move along the vertical direction, and the opening and closing action with the current-conducting plate 3 is completed; one end of the grounding push rod 6 is arranged outside the GIS box body 1, and the other end of the grounding push rod 6 is arranged in the GIS box body 1 through a push-pull guide hole 11 and used for completing the opening and closing actions with the transmission assembly 9 through transverse push-pull.

As shown in fig. 3, the transmission assembly 9 includes: the cable connector comprises a support 91, a linkage plate 92 and a gear 93, wherein the support 91 is vertically connected to a cable outlet terminal 4, the support 91 is provided with a vertical sliding groove 94, the linkage plate 92 is installed on the support 91 through the vertical sliding groove 94, and a moving contact 8 is fixedly connected to the top of the linkage plate 92; the linkage plate 92 is provided with a strip-shaped guide hole 95 and a vertical rack 96, the strip-shaped guide hole 95 is vertically formed in the linkage plate 92, the vertical rack 96 is arranged on one side of the strip-shaped guide hole 95, the gear 93 is meshed with the vertical rack 96, and the second end of the insulating rod 7 sequentially penetrates through the support 91 and the strip-shaped guide hole 95 to be fixedly connected with the gear 93.

During the use, three isolation earthing switch subassemblies 2 of group can regard as A, B, C three-phase isolation earthing switch, and the three-phase is in that GIS box 1 is placed with one side, and inner structure is the same.

1. The rotating hand wheel 5 can control the linear motion of the movable contact 8 through the insulating rod 7, when the movable contact 8 of any phase is not contacted with the conductive plate 3 and the distance is enough, the phase-isolated switch is in a separate state, and simultaneously the phase-grounding push rod 6 is contacted with the bracket 91 and is in an engaged state. And similarly, controlling the other two phases to operate to the same state. The three-phase isolation knives are equally divided at the moment, and the grounding knives are closed.

2. The rotating hand wheel 5 can control the moving contact 8 to move linearly through the insulating rod 7, when the moving contact 8 of any phase is contacted with the conductive plate 3, the phase isolating switch is in an on state, and simultaneously the phase grounding push rod 6 is pulled out to be separated from the bracket 91 and is in an off state. And similarly, controlling the other two phases to operate to the same state. The three-phase isolation knives are all closed, and the grounding knives are all separated.

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

Claims

1. A novel three-phase isolation grounding switch is characterized by comprising: the GIS box body (1) is provided with three groups of isolating and grounding switch assemblies (2), the top of the GIS box body (1) is provided with a current conducting plate (3), and the bottom of the GIS box body is provided with three equidistant wire outlet terminals (4);

the isolating grounding switch assembly (2) comprises: the grounding device comprises a rotary hand wheel (5), a grounding push rod (6), an insulating rod (7), a moving contact (8) and a transmission assembly (9), wherein the insulating rod (7), the moving contact (8) and the transmission assembly (9) are all arranged in a box body, the transmission assembly (9) is fixedly connected to a wire outlet terminal (4), and the moving contact (8) is fixedly connected to the transmission assembly (9); the outer wall of the GIS box body (1) is provided with a rotary guide hole (10) and a push-pull guide hole (11), a rotary hand wheel (5) is arranged outside the GIS box body (1), the rotary hand wheel (5) is fixedly arranged at the first end of an insulating rod (7), and the second end of the insulating rod (7) penetrates through the rotary guide hole (10) and then is rotatably connected with a transmission assembly (9); one end of the grounding push rod (6) is arranged outside the GIS box body (1), and the other end of the grounding push rod (6) is arranged in the GIS box body (1) through the push-pull guide hole (11).

2. The new three-phase isolating earthing switch according to claim 1, characterized in that said transmission assembly (9) comprises: the cable connector comprises a support (91), a linkage plate (92) and a gear (93), wherein the support (91) is vertically connected to a cable outlet terminal (4), a vertical sliding groove (94) is formed in the support (91), the linkage plate (92) is installed on the support (91) through the vertical sliding groove (94), and a moving contact (8) is fixedly connected to the top of the linkage plate (92); be equipped with bar guiding hole (95) and vertical rack (96) on interlock board (92), bar guiding hole (95) are vertical to be seted up on interlock board (92), and one side at bar guiding hole (95) is established in vertical rack (96), gear (93) and vertical rack (96) meshing, support (91) and bar guiding hole (95) and gear (93) fixed connection are passed in proper order to the second end of insulating stick (7).

3. The novel three-phase isolating grounding switch as claimed in claim 1, wherein the side wall of the GIS box body (1) is provided with an observation window (12).

4. The novel three-phase isolating grounding switch as claimed in claim 1, wherein a basin insulator (13) is arranged right above the GIS box body (1), and the conductive plate (3) is fixedly connected to the bottom of the basin insulator (13).

5. The novel three-phase isolating grounding switch as claimed in claim 1, wherein the push-pull guiding hole (11) is provided right below the rotary guiding hole (10), and sealing rings are provided in both the push-pull guiding hole (11) and the rotary guiding hole (10).

6. The novel three-phase isolation earthing switch according to claim 3, characterized in that the three isolation earthing switch assemblies (2) are arranged on the same side of the GIS box body (1), and the observation window (12) is arranged on the side wall of the GIS box body (1) relative to the isolation earthing switch assemblies (2).