CN201430365Y - 24kV mid-placed switch cabinet - Google Patents

Abstract

The utility model discloses a 24 kV mid-placed switch cabinet, which comprises a cabinet body (1), a relay control room (21) is located at the upper part of a handcart room (18), a bus room (19) and acable room (20) are located at the back side of the handcart room (18), the cable room (20) is located under the bus room (19), a main bus-bar (10) is provided with a branch bar (9), the branch bar (9) is supported by a pillar insulator and then is connected with an upper electric-shock box (8), a lower electric-shock box (15) is connected with a current transformer (4) arranged in the cable room(20); an upper metal valve and a lower metal valve correspond to the upper electric-shock box and the lower electric-shock box (8,15) in the handcart room (18); a guide rail (22) is provided with a handcart (13), an upper contact, a lower contact (16) at the front part of the handcart (13) are respectively disconnected with or connected with the upper electric-shock box, the lower electric-shockbox (8 ,15) along with the movement of the handcart; an interlock structure is arranged between the handcart (13) and a grounding switch operating shaft (7).

Description

A kind of 24kV intermediate switchgear cabinet

Technical field

The utility model relates to a kind of 24kV intermediate switchgear cabinet.

Background technology

Present relative 10kV electric pressure system of 20kV electric pressure system has advantages such as supply district is wide, line loss is low, equipment investment is few.Along with developing rapidly of Chinese electrical network, many areas begin to build 20kV electric pressure electrical network, but the present switch cubicle complex structure of 20kv, install greatlyyer, and security performance is poor.

Summary of the invention

The utility model provides a kind of 24kV intermediate switchgear cabinet, and it is not only simple in structure, and highly versatile be convenient to safeguard, and security performance is good.

The utility model has adopted following technical scheme: a kind of 24kV intermediate switchgear cabinet, it comprises cabinet, be distributed with the handcart chamber in the described cabinet, bus-bar room, cable vault and relay control room, the relay control room is positioned at top, handcart chamber, bus-bar room and cable vault are positioned at the rear side of handcart chamber, the cable vault is positioned at the below of bus-bar room, be distributed with the three-phase main bus bar in the bus-bar room, on each main bus bar, draw branch bar, in bus-bar room and cable vault, be respectively equipped with electric shock box and following electric shock box, branch bar is connected with the upper contact head box by after the support of post insulator, the current transformer that is provided with in following electric shock box and the cable vault is connected, be provided with on the dividing plate between handcart chamber and the bus-bar room, following metal dampers, on, on following metal dampers and handcart are indoor, following electric shock box is corresponding, two bottom sides in the handcart chamber is provided with the guide rail that moves for handcart, on guide rail, be provided with handcart, on the handcart front portion, following contact is along with handcart moves respectively with last, following electric shock box is realized disconnecting or connecting, and is provided with interlock between handcart and the earthed switch operating axis.

Described main bus bar is the square-section copper bar.Described main bus bar is with insulating sleeve outward.Described metal dampers is provided with the valve opening and closing structure, the interlock of valve and handcart, and handcart drives discharge gate operating mechanism when mobile in cabinet makes metal dampers open or close with the turnover of handcart.The bottom of described cable vault is provided with lightning arrester.Be parallel with charged display unit on the described earthed switch.The top of described cabinet is provided with pressure relief device.The little bus-bar room locally connected at described relay control room and cabinet top, the bottom is communicated with the secondary wire casing.The anti-condensation heater that described handcart chamber and cable vault are respectively equipped with.On the door of described relay control room suggestive button or KK type change over switch are housed.

The utlity model has following beneficial effect: switch cubicle of the present utility model designs for seriation, and it can adapt to different Main Wire Connection Scheme requirements, and component universality is strong, is convenient to produce and guarantee machining accuracy, and same specification handcart interchangeability is good, is convenient to operation maintenance.Be parallel with charged display unit on the earthed switch of the present utility model, whether charged display unit can indicate the cable vault to have, prompting high tension loop charged state, can also cooperate with electromagnetic lock, realize forced blocking with operating grip, cabinet door and adjacent cabinet, reach and prevent that on-load from moving and isolate handcart, prevent splice grafting ground, charged pass switch, prevent the purpose of mistakenly entering charged chamber, the anti-error performance of raising product.The top of cabinet of the present utility model is equipped with pressure relief device, and when generation arc fault air pressure raise rapidly in the compartment, the top pressure relief device was opened release pressure and high-temperature gas, ensures operating personnel and device security.The anti-condensation heater that handcart of the present utility model chamber and cable vault are respectively equipped with, it prevents to produce condensation when high humidity environment or variations in temperature are big.Suggestive button or KK type change over switch are housed on the relay of the present utility model control room door, prevent that mistake from closing, mistake is divided circuit breaker.Only when test or service position, circuit breaker just can close, divide operation handcart of the present utility model, and behind the breaker closing, handcart is lockable and can't moves, and car pushes away when preventing on-load, shakes hands.Only when earthed switch was in the separating brake position, handcart could move to the service position from test or open position to the utility model; Only when handcart was in test or removes the position, earthed switch just can carry out closing operation, prevented to be with earthed switch to close circuit breaker and charged mistake splice grafting ground switch, and when earthed switch was in the separating brake position, Xiamen and back door were prevented mistakenly entering charged chamber by locking.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is a main electrical scheme schematic diagram of the present utility model

Embodiment

In Fig. 1 and Fig. 2, the utility model is a kind of 24kV intermediate switchgear cabinet, it comprises cabinet 1, the top of cabinet 1 is provided with pressure relief device 11, be distributed with handcart chamber 18 in the cabinet 1, bus-bar room 19, cable vault 20 and relay control room 21, relay control room 21 is positioned at 18 tops, handcart chamber, bus-bar room 19 and cable vault 20 are positioned at the rear side of handcart chamber 18, cable vault 20 is positioned at the below of bus-bar room 19, be distributed with three-phase main bus bar 10 in the bus-bar room 19, main bus bar 10 is the square-section copper bar, the main bus bar 10 outer insulating sleeves 2 that are with, on each main bus bar 10, draw branch bar 9, in bus-bar room 19 and cable vault 20, be respectively equipped with electric shock box 8 and following electric shock box 15, branch bar 9 is connected with upper contact head box 8 by after the support of post insulator 3, the current transformer 4 that is provided with in following electric shock box 15 and the cable vault 20 is connected, on the dividing plate between handcart chamber 18 and the bus-bar room 19, be provided with, following metal dampers, on, on in following metal dampers and the handcart chamber 18, following electric shock box 8 is corresponding, be provided with the guide rail 22 that moves for handcart in the bottom of handcart chamber 18, on guide rail 22, be provided with handcart 13, handcart can be divided into circuit breaker cart by function, the metering handcart, the voltage transformer handcart, the lightning arrester handcart, isolate handcart, fuse handcart etc., on handcart 13 front portions, following contact 16 is along with handcart moves respectively with last, following electric shock box 8,15 realize disconnecting or connecting, metal dampers is provided with the valve opening and closing structure, valve and handcart 13 interlocks, handcart 13 drives discharge gate operating mechanism when mobile in cabinet makes metal dampers open or close with the turnover of handcart 13, be provided with interlock between handcart 13 and the earthed switch operating axis 7, can realize following interlock: a between handcart and the earthed switch operating axis, when having only earthed switch 6 to be in the separating brake position, it is mobile that the locking annex on its operating axis 7 just allows handcart 13 to pass in and out; B, have only handcart 13 to be in test position or shift out cabinet 1 after, operating axis 7 can rotate, earthed switch 6 can close, divide operation, after earthed switch 6 closed a floodgate, handcart 13 can not enter into the service position; Handcart is when the service position simultaneously, and earthed switch 6 can not close a floodgate; Locking between handcart and secondary plug makes handcart when the service position, secondary plug can not be extracted, the bottom of cable vault is provided with lightning arrester 5, be parallel with charged display unit 17 on the earthed switch, little bus-bar room 12 locally connecteds at relay control room 21 and cabinet 1 top, the bottom is communicated with the secondary wire casing, and the anti-condensation heater 14 that handcart chamber 18 and cable vault 20 are respectively equipped with is equipped with suggestive button or KK type change over switch on the door of relay control room 21.

Claims (10)

1, a kind of 24kV intermediate switchgear cabinet, it comprises cabinet (1), it is characterized in that being distributed with in the described cabinet (1) handcart chamber (18), bus-bar room (19), cable vault (20) and relay control room (21), relay control room (21) is positioned at top, handcart chamber (18), bus-bar room (19) and cable vault (20) are positioned at the rear side of handcart chamber (18), cable vault (20) is positioned at the below of bus-bar room (19), be distributed with three-phase main bus bar (10) in the bus-bar room (19), on each main bus bar (10), draw branch bar (9), in bus-bar room (19) and cable vault (20), be respectively equipped with electric shock box (8) and following electric shock box (15), branch bar (9) is connected with upper contact head box (8) by after the support of post insulator (3), the current transformer (4) that is provided with in following electric shock box (15) and cable vault (20) is connected, on the dividing plate between handcart chamber (18) and the bus-bar room (19), be provided with, following metal dampers, on, on in following metal dampers and handcart chamber (18), following electric shock box (8) is corresponding, two bottom sides in handcart chamber (18) is provided with the guide rail (22) that moves for handcart, on guide rail (22), be provided with handcart (13), on handcart (13) front portion, following contact (16) is along with handcart moves respectively with last, following electric shock box (8,15) realize disconnecting or connecting, be provided with interlock between handcart (13) and the earthed switch operating axis (7).

2,24kV intermediate switchgear cabinet according to claim 1 is characterized in that described main bus bar (10) is the square-section copper bar.

3,24kV intermediate switchgear cabinet according to claim 1 is characterized in that the outer insulating sleeve (2) that is with of described main bus bar (10).

4,24kV intermediate switchgear cabinet according to claim 1, it is characterized in that described metal dampers is provided with the valve opening and closing structure, valve and handcart (13) interlock, handcart (13) drive discharge gate operating mechanism when mobile in cabinet makes metal dampers open or close with the turnover of handcart (13).

5,24kV intermediate switchgear cabinet according to claim 1 is characterized in that the bottom of described cable vault is provided with lightning arrester (5).

6,24kV intermediate switchgear cabinet according to claim 1 is characterized in that being parallel with on the described earthed switch charged display unit (17).

7,24kV intermediate switchgear cabinet according to claim 1 is characterized in that the top of described cabinet (1) is provided with pressure relief device (11).

8,24kV intermediate switchgear cabinet according to claim 1 is characterized in that little bus-bar room (12) locally connected at described relay control room (21) and cabinet top, and the bottom is communicated with the secondary wire casing.

9,24kV intermediate switchgear cabinet according to claim 1 is characterized in that the anti-condensation heater (14) that described handcart chamber (18) and cable vault (20) are respectively equipped with.

10,24kV intermediate switchgear cabinet according to claim 1, it is characterized in that described relay control room (21) the door on suggestive button or KK type change over switch are housed.

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