CN110911990A

CN110911990A - A high-voltage switch cabinet structure

Info

Publication number: CN110911990A
Application number: CN201911366133.XA
Authority: CN
Inventors: 杨玉福; 陈腾林; 简兆辉; 林艺娜; 林志强; 林晓裕; 王辉; 罗志婷
Original assignee: Zhongjun Intelligent Electrical Technology Co Ltd
Current assignee: Zhongjun Intelligent Electrical Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-03-24
Anticipated expiration: 2039-12-26
Also published as: CN110911990B

Abstract

The invention discloses a high-voltage switch cabinet structure, which comprises a cabinet body, wherein a bus bar room, a cable room and a circuit breaker room are arranged in the cabinet body, wherein the circuit breaker room is separated from the bus bar room and the cable room by a safety partition, and the bus bar room passes through The bent plate is separated from the cable room. The three-phase circuit breaker is installed in the circuit breaker room, the busbar is installed in the busbar room, and the current transformer, lightning arrester and grounding switch are installed in the cable room. Lightning arresters and earthing switches are mounted on the safety bulkhead. The invention can facilitate the maintenance of the current transformer and the grounding switch.

Description

High-voltage switch cabinet structure

Technical Field

The invention relates to the field of switch cabinets, in particular to a high-voltage switch cabinet structure.

Background

As shown in fig. 1 and fig. 2, the following problems exist in the existing high-voltage switch cabinet:

1. a current transformer 1 'and a grounding switch 2' in a cable chamber A of the switch cabinet are arranged at the rear side of the cabinet body, and most of the space at the rear side of the cabinet body is occupied; the installation positions of the current transformer and the grounding switch increase the difficulty of element installation, and are also not beneficial to field operation and later-period maintenance and repair of the current transformer and the grounding switch;

2. the cabinet body of cubical switchboard adopts cascaded structure, and the generating line 3' of the generating line room B at cabinet body top adopts the L type to arrange, causes generating line room B space narrow and small, is unfavorable for the heat dissipation of generating line copper bar, has influenced the electric conductive property of generating line copper bar.

Disclosure of Invention

The invention aims to provide a high-voltage switch cabinet structure which can facilitate the maintenance of a current transformer and a grounding switch.

In order to achieve the above purpose, the solution of the invention is:

a high-voltage switch cabinet structure comprises a cabinet body, wherein a bus chamber, a cable chamber and a breaker chamber are arranged in the cabinet body, the breaker chamber is positioned at the front part of the cabinet body, the bus chamber and the cable chamber are positioned at the rear part of the cabinet body, the cable chamber is positioned below the bus chamber, the breaker chamber is separated from the bus chamber and the cable chamber through a safety partition plate, the bus chamber is separated from the cable chamber through a bent plate, the bent plate is in an L-shaped structure and comprises a transverse plate and a vertical plate which are connected, the upper end of the vertical plate is connected with the top of the cabinet body, and the front end of the transverse plate; the circuit breaker is characterized in that a three-phase circuit breaker is installed in the circuit breaker chamber, an A-phase input end, a B-phase input end and a C-phase input end of the three-phase circuit breaker are respectively connected with an A-phase upper contact box, a B-phase upper contact box and a C-phase upper contact box, the A-phase upper contact box, the B-phase upper contact box and the C-phase upper contact box are fixed on the safety partition plate, the A-phase upper contact box, the B-phase upper contact box and the C-phase upper contact box penetrate into the bus chamber, an A-phase output end, a B-phase output end and a C-phase output end of the three-phase circuit breaker are respectively connected with an A-phase lower contact box, a B-phase lower contact box and a C-phase lower contact box, the A-phase lower contact box, the B-phase lower contact box and the C-phase lower; the bus chamber is internally provided with an A-phase bus bar, a B-phase bus bar and a C-phase bus bar, the A-phase bus bar is connected with the A-phase upper contact box through an A-phase branch bar, the B-phase bus bar is connected with the B-phase upper contact box through a B-phase branch bar, and the C-phase bus bar is connected with the C-phase upper contact box through a C-phase branch bar; the cable chamber is internally provided with an A-phase current transformer, a B-phase current transformer, a C-phase current transformer, an A-phase lightning arrester, a B-phase lightning arrester, a C-phase lightning arrester and a grounding switch with a three-phase high-voltage live sensor; the phase current transformer A, the phase current transformer B and the phase current transformer C are inversely arranged on the bottom surface of the transverse plate of the bent plate, and the phase current transformer A, the phase current transformer B and the phase current transformer C are arranged side by side left and right; the incoming line end of the phase A current transformer is connected with the phase A lower contact box through the phase A contact copper bar, the incoming line end of the phase B current transformer is connected with the phase B lower contact box through the phase B contact copper bar, and the incoming line end of the phase C current transformer is connected with the phase C lower contact box through the phase C contact copper bar; the grounding switch is fixed on the safety partition plate and is positioned below the A-phase current transformer, the B-phase current transformer and the C-phase current transformer; the A-phase connecting end of the grounding switch is connected with the wire outlet end of the A-phase current transformer through the A-phase wire outlet copper bar, the B-phase connecting end of the grounding switch is connected with the wire outlet end of the B-phase current transformer through the B-phase wire outlet copper bar, the C-phase connecting end of the grounding switch is connected with the wire outlet end of the C-phase current transformer through the C-phase wire outlet copper bar, the A-phase lightning arrester, the B-phase lightning arrester and the C-phase lightning arrester are installed below the grounding switch, the A-phase lightning arrester is connected with the A-phase connecting end of the grounding switch through the A-phase lightning arrester copper bar, the B-phase lightning arrester is connected with the B-phase connecting end of the grounding switch through the B-phase lightning arrester copper bar, and the.

The phase current transformer A, the phase current transformer B and the phase current transformer C are respectively inversely arranged on the bottom surface of the transverse plate of the bent plate through three drawer type mechanisms; the drawer type mechanism comprises a sliding plate and two sliding rails arranged in parallel along the front-back direction, the two sliding rails are fixedly locked on the bottom surface of the transverse plate of the bent plate, sliding grooves are formed in the two sliding rails, the sliding grooves of the two sliding rails are opposite, the left side and the right side of the sliding plate are respectively inserted into the sliding grooves of the two sliding rails, and the left side and the right side of the sliding plate are respectively fixedly locked with the two sliding rails through screws; the sliding plates of the three drawer type mechanisms are respectively fixed on the tops of the A-phase current transformer, the B-phase current transformer and the C-phase current transformer; the wire inlet end of the phase A current transformer is detachably connected with the phase A contact copper bar through a screw, the wire inlet end of the phase B current transformer is detachably connected with the phase B contact copper bar through a screw, and the wire inlet end of the phase C current transformer is detachably connected with the phase C contact copper bar through a screw; the wire outlet end of the phase A current transformer is detachably connected with the phase A outgoing line copper bar through a screw, the wire outlet end of the phase B current transformer is detachably connected with the phase B outgoing line copper bar through a screw, and the wire outlet end of the phase C current transformer is detachably connected with the phase C outgoing line copper bar through a screw.

The A-phase lightning arrester, the B-phase lightning arrester and the C-phase lightning arrester are fixed on the safety partition board, the A-phase lightning arrester, the B-phase lightning arrester and the C-phase lightning arrester are arranged side by side in a left-right mode, and the A-phase lightning arrester, the B-phase lightning arrester and the C-phase lightning arrester are arranged in a flat mode.

The phase A busbar, the phase B busbar and the phase C busbar are all long strips, the phase A busbar, the phase B busbar and the phase C busbar are arranged in parallel in the left-right direction, and the phase A busbar, the phase B busbar and the phase C busbar are arranged side by side in the up-down direction.

The A-phase busbar, the B-phase busbar and the C-phase busbar are sequentially arranged side by side from top to bottom, the lengths of the A-phase busbar, the B-phase busbar and the C-phase busbar are sequentially increased, the right ends of the A-phase busbar, the B-phase busbar and the C-phase busbar are aligned, and the right ends of the A-phase busbar, the B-phase busbar and the C-phase busbar are respectively connected with an A-phase wall bushing, a B-phase wall bushing and a C-phase wall bushing; the phase A wall bushing, the phase B wall bushing and the phase C wall bushing are fixed on the right side wall of the bus chamber; the A-phase upper contact box, the B-phase upper contact box and the C-phase upper contact box are sequentially arranged from right to left;

the phase A branch bar, the phase B branch bar and the phase C branch bar are sequentially arranged from right to left, two ends of the phase A branch bar are respectively connected with the middle parts of the phase A upper contact box and the phase A bus bar, two ends of the phase B branch bar are respectively connected with the left ends of the phase B upper contact box and the phase B bus bar, and two ends of the phase C branch bar are respectively connected with the left ends of the phase C upper contact box and the phase C bus bar.

The A-phase busbar, the B-phase busbar and the C-phase busbar are respectively fixed on a vertical plate of the bent plate through an A-phase insulator, a B-phase insulator and a C-phase insulator.

An observation window is arranged on the vertical plate of the bent plate.

After the scheme is adopted, the invention has the following advantages:

1. the phase current transformer A, the phase current transformer B and the phase current transformer C in the cable chamber are inversely arranged on the bottom surface of the transverse plate of the bent plate, and the phase current transformer A, the phase current transformer B and the phase current transformer C are arranged side by side left and right; the grounding switch, the A-phase lightning arrester, the B-phase lightning arrester and the C-phase lightning arrester in the cable chamber are fixed on the safety partition plate, so that the occupation of the space on the rear side of the cabinet body by the A-phase current transformer, the B-phase current transformer, the C-phase current transformer and the grounding switch can be avoided, and the residual space in the cable chamber can be large, so that people can conveniently overhaul the A-phase current transformer, the B-phase current transformer, the C-phase current transformer and the grounding switch from the rear side of the cabinet body;

2. the phase current transformer A, the phase current transformer B and the phase current transformer C are respectively inversely arranged on the bottom surface of a transverse plate of a bent plate through three drawer type mechanisms; the wire inlet end of the phase-A current transformer is detachably connected with the phase-A contact copper bar through a screw, the wire inlet end of the phase-B current transformer is detachably connected with the phase-B contact copper bar through a screw, and the wire inlet end of the phase-C current transformer is detachably connected with the phase-C contact copper bar through a screw; the wire outlet end of the phase A current transformer is detachably connected with the phase A outgoing line copper bar through a screw, the wire outlet end of the phase B current transformer is detachably connected with the phase B outgoing line copper bar through a screw, and the wire outlet end of the phase C current transformer is detachably connected with the phase C outgoing line copper bar through a screw, so that the phase A current transformer, the phase B current transformer and the phase C current transformer can be conveniently detached; for example, when the phase-A current transformer needs to be disassembled, only the screws for connecting the phase-A current transformer with the phase-A contact copper bar and the phase-A outgoing line copper bar are disassembled, and the screws for connecting the sliding rail and the sliding plate on the drawer type mechanism matched with the phase-A current transformer are disassembled, so that the phase-A current transformer can be pulled out;

3. the A-phase busbar, the B-phase busbar and the C-phase busbar are all long strips, the A-phase busbar, the B-phase busbar and the C-phase busbar are arranged in parallel in the left-right direction, and the A-phase busbar, the B-phase busbar and the C-phase busbar are arranged side by side in the up-down direction.

Drawings

Fig. 1 is a schematic structural diagram 1 of a conventional switch cabinet;

fig. 2 is a schematic structural diagram 2 of a conventional switch cabinet;

FIG. 3 is a schematic structural diagram of the present invention 1;

FIG. 4 is a schematic structural diagram of the present invention 2;

FIG. 5 is a schematic view of a partial structure of the present invention 1;

FIG. 6 is a partial schematic view of the present invention in FIG. 2;

FIG. 7 is a partial schematic view of the present invention in FIG. 3;

FIG. 8 is a partial schematic view of the present invention 4;

FIG. 9 is a partial schematic view of the present invention 5;

FIG. 10 is a partial schematic view of the present invention in FIG. 6;

FIG. 11 is an exploded view of the drawer mechanism of the present invention;

description of reference numerals:

the cabinet body A is provided with a cabinet body A,

a bus chamber 1, an A-phase bus bar 11, a B-phase bus bar 12, a C-phase bus bar 13, an A-phase branch bar 14, a B-phase branch bar 15, a C-phase branch bar 16, an A-phase insulator 17, a B-phase insulator 18, a C-phase insulator 19, an A-phase wall bushing 101, a B-phase wall bushing 102, a C-phase wall bushing 103,

a cable chamber 2, an A-phase current transformer 21, an A-phase contact copper bar 211, a B-phase current transformer 22, a B-phase contact copper bar 221, a C-phase current transformer 23, a C-phase contact copper bar 231, an A-phase lightning arrester 24, a B-phase lightning arrester 25, a C-phase lightning arrester 26, a grounding switch 27, an A-phase outlet copper bar 271, a B-phase outlet copper bar 272 and a C-phase outlet copper bar 273,

a breaker chamber 3, a three-phase breaker 31, an A-phase upper contact box 32, a B-phase upper contact box 33, a C-phase upper contact box 34, an A-phase lower contact box 35, a B-phase lower contact box 36, a C-phase lower contact box 37,

the safety barrier 4 is arranged in the inner cavity of the frame,

a bent plate 5, a transverse plate 51, a vertical plate 52, a viewing window 521,

the drawer mechanism 6, the sliding plate 61, the sliding rail 62 and the sliding groove 621.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 3 to 11, the present invention discloses a high voltage switch cabinet structure, which includes a cabinet body a, a bus chamber 1, a cable chamber 2 and a breaker chamber 3 are arranged in the cabinet body a, wherein the breaker chamber 3 is located at the front of the cabinet body a, the bus chamber 1 and the cable chamber 2 are located at the rear of the cabinet body a, the cable chamber 2 is located below the bus chamber 1, the breaker chamber 3 is separated from the bus chamber 1 and the cable chamber 2 by a safety partition plate 4, the bus chamber 1 is separated from the cable chamber 2 by a bending plate 5, the bending plate 5 is an L-shaped structure, the bending plate 5 includes a horizontal plate 51 and a vertical plate 52 connected with each other, the horizontal plate 51 and the vertical plate 52 can be integrally formed, wherein the upper end of the vertical plate 52 is connected with the top of the cabinet body a by a screw, the front end of the horizontal plate 51 is connected with the safety partition plate 4 by a screw, and an observation window 521 can.

As shown in fig. 3, 5 and 6, a three-phase circuit breaker 31 is installed in the circuit breaker chamber 3, the phase a input end, the phase B input end and the phase C input end of the three-phase circuit breaker 31 are respectively connected with a phase a upper contact box 32, a phase B upper contact box 33 and a phase C upper contact box 34, the phase a upper contact box 32, the phase B upper contact box 33 and the phase C upper contact box 34 are fixed on the safety barrier 3, the phase a upper contact box 32, the phase B upper contact box 33 and the phase C upper contact box 34 penetrate into the bus chamber 1, the phase a output end, the phase B output end and the phase C output end of the three-phase circuit breaker 31 are respectively connected with a phase a lower contact box 35, a phase B lower contact box 36 and a phase C lower contact box 37, the A-phase lower contact box 35, the B-phase lower contact box 36 and the C-phase lower contact box 37 are fixed on the safety baffle plate 4, and the A-phase lower contact box 35, the B-phase lower contact box 36 and the C-phase lower contact box 37 penetrate into the cable chamber 2; the phase a upper contact box 32, the phase B upper contact box 33, the phase C upper contact box 34, the phase a lower contact box 35, the phase B lower contact box 36 and the phase C lower contact box 37 may be screwed to the safety barrier 4.

As shown in fig. 3 to 6, an a-phase busbar 11, a B-phase busbar 12 and a C-phase busbar 13 are installed in the busbar chamber 1, the a-phase busbar 11 is connected with an a-phase upper contact box 32 through an a-phase branch bar 14, the B-phase busbar 12 is connected with a B-phase upper contact box 33 through a B-phase branch bar 15, and the C-phase busbar 13 is connected with a C-phase upper contact box 34 through a C-phase branch bar 16.

As shown in fig. 5 to 10, the a-phase busbar 11, the B-phase busbar 12, and the C-phase busbar 13 are all strip-shaped, the a-phase busbar 11, the B-phase busbar 12, and the C-phase busbar 13 are arranged in parallel in the left-right direction, and the a-phase busbar 11, the B-phase busbar 12, and the C-phase busbar 13 are arranged side by side in the up-down direction, so that compared with the existing L-shaped busbar, the a-phase busbar, the B-phase busbar, and the C-phase busbar of the present invention can radiate heat better.

As shown in fig. 6, 7 and 10, the a-phase busbar 11, the B-phase busbar 12 and the C-phase busbar 13 may be sequentially arranged side by side from top to bottom, the lengths of the a-phase busbar 11, the B-phase busbar 12 and the C-phase busbar 13 are sequentially increased, the right ends of the a-phase busbar 11, the B-phase busbar 12 and the C-phase busbar 13 are aligned, and the right ends of the a-phase busbar 11, the B-phase busbar 12 and the C-phase busbar 13 are respectively connected with an a-phase wall bushing 101, a B-phase wall bushing 102 and a C-phase wall bushing 103; the A-phase wall bushing 101, the B-phase wall bushing 102 and the C-phase wall bushing 103 are fixed on the right side wall of the bus chamber 1 through screws, and the A-phase busbar 11, the B-phase busbar 12 and the C-phase busbar 13 are installed on the bus chamber 1; the contact box 32 on the A phase, the contact box 33 on the B phase and the contact box 34 on the C phase are sequentially arranged from right to left, two ends of the A phase branch row 34 are respectively connected with the middle parts of the A phase upper contact box 32 and the A phase busbar 11, two ends of the B phase branch row 35 are respectively connected with the left ends of the B phase upper contact box 33 and the B phase busbar 12, and two ends of the C phase branch row 36 are respectively connected with the left ends of the C phase upper contact box 34 and the C phase busbar 13, so that the A phase branch row 34, the B phase branch row 35 and the C phase branch row 36 can be separated, and the heat dissipation of the A phase branch row 34, the B phase branch row 35 and the C phase branch row 36 is facilitated. In addition, the phase-A busbar 11, the phase-B busbar 12 and the phase-C busbar 13 can be respectively fixed on a vertical plate 52 of the bent plate 5 through a phase-A insulator 17, a phase-B insulator 18 and a phase-C insulator 19, so that the installation stability of the phase-A insulator 17, the phase-B insulator 18 and the phase-C insulator 19 is improved.

As shown in fig. 4 to 6, the cable chamber 2 is provided with an a-phase current transformer 21, a B-phase current transformer 22, a C-phase current transformer 23, an a-phase lightning arrester 24, a B-phase lightning arrester 25, a C-phase lightning arrester 26, and an earth switch 27 with a three-phase high-voltage live sensor.

As shown in fig. 5, 6, 8, 9 and 10, the a-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23 are inversely installed on the bottom surface of the horizontal plate 51 of the bent plate 5, and the a-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23 are arranged side by side in the left-right direction; the grounding switch 27 is fixed on the safety partition plate 4, and the grounding switch 27 is located below the A-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23, so that the occupation of the A-phase current transformer 21, the B-phase current transformer 22, the C-phase current transformer 23 and the grounding switch 27 on the space of the rear side of the cabinet body A can be avoided, and the residual space in the cable chamber 2 can be large, so that people can conveniently overhaul the A-phase current transformer 21, the B-phase current transformer 22, the C-phase current transformer 23 and the grounding switch 27 from the rear side of the cabinet body A. The incoming line end of the phase-A current transformer 21 is connected with the phase-A lower contact box 35 through the phase-A contact copper bar 211, the incoming line end of the phase-B current transformer 22 is connected with the phase-B lower contact box 36 through the phase-B contact copper bar 221, the incoming line end of the phase-C current transformer 23 is connected with the phase-C lower contact box 37 through the phase-C contact copper bar 231, the phase-A connection end of the grounding switch 27 is connected with the line outlet end of the phase-A current transformer 21 through the phase-A outgoing line copper bar 271, the phase-B connection end of the grounding switch 27 is connected with the line outlet end of the phase-B current transformer 23 through the phase-B outgoing line copper bar 272, the phase-C connection end of the grounding switch 27 is connected with the line outlet end of the phase-C current transformer 23 through the phase-C outgoing line copper bar 273, and the phase-A outgoing line copper.

As shown in fig. 5, 8, 9 and 11, the a-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23 can be respectively installed upside down on the bottom surface of the horizontal plate 51 of the curved plate 5 by three drawer-type mechanisms 6; the drawer-type mechanism 6 comprises a sliding plate 61 and two sliding rails 62 arranged in parallel in the front-back direction, the two sliding rails 61 are locked on the bottom surface of the transverse plate 51 of the bent plate 5, sliding grooves 621 are formed in the two sliding rails 62, the sliding grooves 621 of the two sliding rails 62 are opposite, the left side and the right side of the sliding plate 61 are respectively inserted into the sliding grooves 621 of the two sliding rails 62, and the left side and the right side of the sliding plate 61 are respectively locked with the two sliding rails 62 through screws; the sliding plates 61 of the three drawer-type mechanisms 6 are respectively fixed on the tops of the a-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23, so that the a-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23 are inversely arranged on the bottom surface of the transverse plate 51 of the bent plate 5; the wire inlet end of the phase-A current transformer 21 is detachably connected with the phase-A contact copper bar 211 through a screw, the wire inlet end of the phase-B current transformer 22 is detachably connected with the phase-B contact copper bar 221 through a screw, and the wire inlet end of the phase-C current transformer 23 is detachably connected with the phase-C contact copper bar 231 through a screw; the line outgoing end of the A-phase current transformer 21 is detachably connected with the A-phase line outgoing copper bar 271 through a screw, the line outgoing end of the B-phase current transformer 22 is detachably connected with the B-phase line outgoing copper bar 272 through a screw, and the line outgoing end of the C-phase current transformer 23 is detachably connected with the C-phase line outgoing copper bar 273 through a screw, so that the A-phase current transformer 21, the B-phase current transformer 22 and the C-phase current transformer 23 can be conveniently detached. For example, when the a-phase current transformer 21 needs to be disassembled, only the screws for connecting the a-phase current transformer 21 with the a-phase contact copper bar 221 and the a-phase outgoing line copper bar 271 need to be disassembled, and the screws for connecting the sliding rail 62 and the sliding plate 61 on the drawer type mechanism 6 matched with the a-phase current transformer 21 need to be disassembled, so that the a-phase current transformer 21 can be pulled out, which is very convenient.

As shown in fig. 4 to 10, the a-phase arrester 24, the B-phase arrester 25, and the C-phase arrester 26 are installed below the earthing switch 27, the a-phase arrester 24 is connected to the a-phase connection terminal of the earthing switch 27 through an a-phase arrester copper bar 241, the B-phase arrester 25 is connected to the B-phase connection terminal of the earthing switch 27 through a B-phase arrester copper bar 251, and the C-phase arrester 26 is connected to the C-phase connection terminal of the earthing switch 27 through a C-phase arrester copper bar 261; wherein the a-phase arrestor 24, the B-phase arrestor 25 and the C-phase arrestor 26 are installed below the ground switch 27 to secure a sufficient safe electrical distance. As shown in fig. 5 to 10, the a-phase arrester 24, the B-phase arrester 25, and the C-phase arrester 26 may be fixed to the dash board 4, the a-phase arrester 24, the B-phase arrester 25, and the C-phase arrester 26 are arranged side by side in the left-right direction, and the a-phase arrester 24, the B-phase arrester 25, and the C-phase arrester 26 are arranged flatly, so that the space occupation in the cable chamber 2 can be reduced.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A high-voltage switchgear structure, comprising a cabinet, a busbar room, a cable room and a circuit breaker room are arranged in the cabinet, wherein the circuit breaker room is located at the front of the cabinet, the busbar room and the cable room are located at the rear of the cabinet and the cables are The room is below the busbar room, the circuit breaker room is separated from the busbar room and the cable room by a safety partition, and the busbar room is separated from the cable room by a curved plate. The curved plate has an L-shaped structure. The vertical plate, wherein the upper end of the vertical plate is connected with the top of the cabinet, and the front end of the horizontal plate is connected with the safety partition; it is characterized in that:

A three-phase circuit breaker is installed in the circuit breaker room, and the A-phase input end, the B-phase input end and the C-phase input end of the three-phase circuit breaker are respectively connected with the A-phase upper contact box, the B-phase upper contact box and the C-phase upper contact box. Contact box, A-phase upper contact box, B-phase upper contact box and C-phase upper contact box are fixed on the safety partition and A-phase upper contact box, B-phase upper contact box and C-phase upper contact box The box penetrates into the busbar room, and the A-phase output terminal, B-phase output terminal and C-phase output terminal of the three-phase circuit breaker are respectively connected with the A-phase lower contact box, the B-phase lower contact box and the C-phase lower contact box. The lower contact box of the phase, the lower contact box of the B phase and the lower contact box of the C phase are fixed on the safety partition, and the lower contact box of the A phase, the lower contact box of the B phase and the lower contact box of the C phase penetrate into the cable compartment ;

A-phase busbar, B-phase busbar and C-phase busbar are installed in the busbar room, A-phase busbar is connected to the upper contact box of A-phase through A-phase branch row, B-phase busbar is connected to B-phase branch row through B-phase branch row. The upper-phase contact box is connected, and the C-phase busbar is connected to the C-phase upper contact box through the C-phase branch row;

The cable room is provided with A-phase current transformer, B-phase current transformer, C-phase current transformer, A-phase arrester, B-phase arrester, C-phase arrester, and a grounding switch with a three-phase high-voltage live sensor;

The A-phase current transformers, B-phase current transformers, and C-phase current transformers are flipped on the bottom surface of the horizontal plate of the bent plate, and the A-phase current transformers, the B-phase current transformers, and the C-phase current transformers are left and right. Arranged side by side; the incoming end of the phase A current transformer is connected to the lower contact box of the A phase through the copper bar of the phase A contact, and the incoming end of the phase B current transformer is connected to the lower phase of the B phase through the copper bar of the phase B contact The contact box is connected, and the incoming terminal of the C-phase current transformer is connected to the C-phase lower contact box through the C-phase contact copper bar;

The grounding switch is fixed on the safety partition, and the grounding switch is located below the phase A current transformer, the phase B current transformer and the phase C current transformer; the phase A connection end of the grounding switch is connected to the phase A current through the copper bar of the phase A outlet. The outgoing end of the transformer is connected, the B-phase connection end of the grounding switch is connected to the outgoing end of the B-phase current transformer through the B-phase outgoing copper bar, and the C-phase connection end of the grounding switch is connected to the C-phase current transformer through the C-phase outgoing copper bar. connected to the outlet end of

The A-phase arrester, B-phase arrester and C-phase arrester are installed under the grounding switch, the A-phase arrester is connected to the A-phase connection end of the earthing switch through the A-phase arrester copper bar, and the B-phase arrester is connected to the earthing switch through the B-phase arrester copper bar. The B-phase connection end of the C-phase arrester is connected to the C-phase connection end of the grounding switch through the C-phase arrester copper bar.

2. The high-voltage switchgear structure according to claim 1, wherein the A-phase current transformer, the B-phase current transformer, and the C-phase current transformer are respectively mounted upside down on the bend through three drawer-type mechanisms. the bottom surface of the horizontal plate of the plate; the drawer-type mechanism includes a sliding plate and two sliding rails arranged in parallel along the front-rear direction, the two sliding rails are locked on the bottom surface of the horizontal plate of the curved plate, and the two sliding rails are provided with The chute, the chute of the two slide rails are opposite, the left and right sides of the slide plate are respectively inserted in the chute of the two slide rails, and the left and right sides of the slide plate are respectively locked with the two slide rails by screws; The sliding plates are respectively fixed on the tops of the A-phase current transformers, the B-phase current transformers and the C-phase current transformers;

The incoming end of the phase A current transformer is detachably connected to the copper bar of the phase A contact through screws, the incoming end of the phase B current transformer is detachably connected to the copper bar of the phase B contact through screws, and the current mutual inductance of phase C is detachably connected. The incoming end of the transformer is detachably connected to the C-phase contact copper bar through screws; the outgoing end of the A-phase current transformer is detachably connected to the A-phase outgoing copper bar through screws, and the outgoing end of the B-phase current transformer is connected by screws. It can be detachably connected with the B-phase outgoing copper bar, and the outgoing end of the C-phase current transformer can be detachably connected with the C-phase outgoing copper bar through screws.

3. A high-voltage switchgear structure as claimed in claim 1 or 2, characterized in that: the A-phase arrester, B-phase arrester and C-phase arrester are fixed on the safety partition, A-phase arrester, B-phase arrester and The C-phase arresters are arranged side by side, and the A-phase arresters, B-phase arresters and C-phase arresters are arranged horizontally.

4. A high-voltage switchgear structure according to claim 1, characterized in that: the A-phase busbars, B-phase busbars and C-phase busbars are all elongated, and the A-phase busbars, B-phase busbars and C-phase busbars are all elongated. The phase busbar and the C-phase busbar are arranged in parallel along the left-right direction, and the A-phase busbar, the B-phase busbar and the C-phase busbar are arranged side by side along the up-down direction.

5. A high-voltage switchgear structure according to claim 4, characterized in that: the A-phase busbars, B-phase busbars and C-phase busbars are arranged side by side in order from top to bottom, A-phase busbars, B-phase busbars, B-phase busbars The lengths of the phase busbar and the phase C busbar increase in turn, the right ends of the phase A busbar, the phase B busbar and the phase C busbar are aligned, and the right ends of the phase A busbar, the phase B busbar and the phase C busbar are respectively A-phase wall bushings, B-phase wall bushings and C-phase wall bushings are connected; A-phase wall bushings, B-phase wall bushings and C-phase wall bushings are fixed on the right side of the busbar room on the wall;

The A-phase upper contact box, the B-phase upper contact box and the C-phase upper contact box are arranged sequentially from right to left;

The A-phase branch row, B-phase branch row and C-phase branch row are arranged in sequence from right to left, and the two ends of the A-phase branch row are respectively connected to the middle of the A-phase upper contact box and the A-phase busbar, and the B-phase branch row The two ends are respectively connected to the B-phase upper contact box and the left end of the B-phase busbar, and the two ends of the C-phase branch bar are respectively connected to the C-phase upper contact box and the left end of the C-phase busbar.

6. The high-voltage switchgear structure according to claim 5, wherein the A-phase busbar, B-phase busbar and C-phase busbar are respectively fixed by A-phase insulators, B-phase insulators and C-phase insulators on the riser of the bent plate.

7 . The structure of a high-voltage switch cabinet according to claim 1 , wherein an observation window is provided on the vertical plate of the bent plate. 8 .