CN2427910Y

CN2427910Y - Novel high voltage switching cabinet having breaker

Info

Publication number: CN2427910Y
Application number: CN 00238154
Authority: CN
Inventors: 涂大石
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-03
Filing date: 2000-07-03
Publication date: 2001-04-25
Anticipated expiration: 2010-07-03

Abstract

The utility model relates to a novel high-voltage switch cabinet having a breaker. The utility model is characterized in that the novel high-voltage switch cabinet having a breaker is composed of a cabinet body, an upper and a lower isolated static contacts and a rotary breaker. The concrete installing sequence is that a main bus is arranged on the upper isolated static contact and then extended onto a main loop of the rotary breaker and the lower isolated static contact, and the elements are arranged on the same vertical line, wherein, the breaker and an operating mechanism can not synchronously rotate as well as rotate synchronously, and the main loop of the breaker is taken as a rotary movable contact of an isolating switch. When an arc-extinguishing chamber is positioned at a vertical position, the isolating switch is switched on, and the breaker is closed for cutting load current. When the arc-extinguishing chamber is positioned at a horizontal position (the breaker is only positioned at a gate division position in the process of rotation, and otherwise the breaker can not rotate), an isolated cutting opening is formed, and various movement testes can be carried out.

Description

A kind of novel high-pressure switch cubicle that has circuit breaker

High pressure (3.6-40.5V) switch cubicle that relates to of the present utility model, particularly a kind of novel high-pressure switch cubicle that has circuit breaker.

At present, the general high voltage switch cubicle has the fixed installation formula and can remove two kinds of installing types, referring to Fig. 1, Fig. 2.Preceding a kind of circuit breaker is fixedly mounted in the case shell of switch cubicle, and is not extensible, is not easy to maintenance.A kind of two kinds of handcart-type and the middles that can be divided into again in back.Handcart-type is that circuit breaker is fixedly mounted on one movably on the handcart, so that circuit breaker can pull out, advance in switch cubicle.The middle structure then is, itself is furnished with wheel circuit breaker, and after with special-purpose carrier loader circuit breaker being risen to certain altitude, the guide rail on the switch cubicle docks with guide rail on the carrier loader, at this moment circuit breaker pushed in the cabinet to lock again, and carrier loader withdraws from again.By a helical screw structure circuit breaker is moved on to service position (or opposite) from test position.But the scheme of these two kinds of withdraw-types is overhauled outward because of moving on to cabinet to circuit breaker, so use more extensive than fixed installation formula.All there are lead travel distance long (because of the many places bending) in above-mentioned two kinds of schemes, because independent electric component is many, cabinet is bulky and because each electric component dual-purpose mutually makes its cost height, shortcomings such as installation inconvenience.In addition, isolating switch, the location status of circuit breaker, earthed switch can't show with the method simulation of machinery.The more important thing is, though but outside the extensible cabinet of the circuit breaker in the withdraw-type switch cabinet, when being in the service position, because circuit breaker is in depths in the cabinet, the maintainer is difficult to overhaul.

The purpose of this utility model is: the novel high-pressure switch cubicle that has circuit breaker that a kind of convenient maintenance, raising ampacity are provided.

The purpose of this utility model is achieved in that a kind of novel high-pressure switch cubicle that has circuit breaker, it is characterized in that: be by cabinet, upper and lower isolation fixed contact, and rotary circuit breaker constitute, concrete erection sequence is: main bus bar arrives rotary breaker device major loop again and isolates fixed contact down to last isolation fixed contact, and said elements is installed on the vertical line; Wherein, circuit breaker and operating mechanism can rotate synchronously, also can asynchronously rotate; The circuit breaker main conductive circuit is the rotation moving contact as isolating switch.Described rotary circuit breaker is made up of arc control device, metallic support, stent-type insulating cylinder, insulation operation pull bar and operating mechanism, arc control device are installed on the stent-type insulating cylinder, insulation operation pull bar is installed on respectively on the base of metallic support and stent-type insulating cylinder, and metallic support is connected with operating mechanism.The arc control device of described rotary circuit breaker can be vacuum interrupter or SF6 arc control device.The described fixed contact of isolation down promptly is that wall bushing formula current transformer is again as cable joint.Described rotary circuit breaker is again that moving contact is isolated in rotation.Described upward isolation fixed contact is again a wall bushing.

Owing to there is above-mentioned structure to make the utility model promptly reduce cost, reduced volume again significantly, it is more convenient to operate, because the primary conductive loop is arranged vertically from top to bottom, and the switch cubicle volume is reduced, and loop resistance reduces, reduce temperature rise, improved ampacity.

Below in conjunction with drawings and Examples the utility model is further described

Fig. 1, fixed high-voltage switch cubicle of the prior art.

Fig. 2, moveable high-voltage switchgear of the prior art.

Fig. 3, switch cubicle structure chart of the present utility model.

Fig. 4, rotary circuit breaker shape assumption diagram of the present utility model.

Among Fig. 1,11-control room, 12-main bus bar chamber, the last isolating switch of 13-, 14-circuit breaker, 15-cable vault, 16-current transformer, isolating switch under the 17-.

Among Fig. 2, the little bus-bar room of 21-, 22-relay bungalow, 23-handcart chamber, 231-handcart chamber steam vent, 232-circuit breaker dolly, the 24-main bus bar, 241-bus-bar room steam vent, 242-main bus bar chamber, the 25-cable vault, 251-cable vault steam vent, 252-cable vault gas off-take, 253-cable, the 26-current transformer, the 27-earthed switch.

Among Fig. 3, the 1-main bus bar, the last isolation of 2-fixed contact, the rotary circuit breaker of 3-, 4-are isolated fixed contact, 5-earthed switch, 6-cable, 31-main bus bar chamber, 32-control room, 33-operating mechanism chamber, 34-breaker chamber, 35-cable vault down.

Among Fig. 4,41-arc control device, 42-metallic support, 43-stent-type insulating cylinder, 44-insulation operation pull bar, 45-operating mechanism.

Referring to Fig. 3, Fig. 4, switch cubicle of the present utility model divide five operating rooms that isolate mutually: main bus bar chamber 31, control room 32, breaker chamber 34, operating mechanism chamber 33 and cable vault 35.Its operation principle is as follows:

When the arc control device 41 of rotary circuit breaker 3 are in the upright position, last isolation fixed contact 2, the upper and lower moving contact of isolating on the stent-type insulating cylinder 43 of fixed contact 4 and rotary circuit breaker 3 are down connected respectively, at this moment rotary circuit breaker 3 closes a floodgate, and makes electric current pass to cable 6 through main bus bar 1, rotary circuit breaker 3, current transformer (hold concurrently and isolate fixed contact 4 down).When revolving when turning 90 degrees, (could rotate when having only rotary circuit breaker 3 rotary circuit breaker 3 in the separating brake position, isolate dynamic and static contact to guarantee that on-load does not divide) when being in horizontal level, last isolation fixed contact 2 and following the isolation form tangible safe isolated port between the fixed contact 4, at this moment can test the operating characteristics of rotary circuit breaker 3, but double as overhauls the safety measure that has a power failure again.If rotary circuit breaker 3 needs to take out maintenance, can take out circuit breaker also and can land with a liftable carrier loader.No matter in the service position still in test position, circuit breaker operation mechanism breaks down, and all can open the Qianmen of operating mechanism chamber 33 and directly overhaul.

Claims

1, a kind of novel high-pressure switch cubicle that has circuit breaker, it is characterized in that: be by cabinet, upper and lower isolation fixed contact, and rotary circuit breaker constitute, concrete erection sequence is: main bus bar arrives rotary breaker device major loop again and isolates fixed contact down to last isolation fixed contact, and said elements is installed on the vertical line; Wherein, circuit breaker and operating mechanism can rotate synchronously, also can asynchronously rotate; The circuit breaker main conductive circuit is the rotation moving contact as isolating switch.

2, a kind of novel high-pressure switch cubicle that has circuit breaker according to claim 1, it is characterized in that: rotary circuit breaker is made up of arc control device, metallic support, stent-type insulating cylinder, insulation operation pull bar and operating mechanism, arc control device are installed on the stent-type insulating cylinder, insulation operation pull bar is installed on respectively on the base of metallic support and stent-type insulating cylinder, and metallic support is connected with operating mechanism.

3, a kind of novel high-pressure switch cubicle that has circuit breaker according to claim 1 and 2, it is characterized in that: the arc control device of rotary circuit breaker can be vacuum interrupter or SF6 arc control device.

4, a kind of novel high-pressure switch cubicle that has circuit breaker according to claim 1 is characterized in that: isolating fixed contact down promptly is that wall bushing formula current transformer is again as cable joint.

5, a kind of novel high-pressure switch cubicle that has circuit breaker according to claim 1 is characterized in that: rotary circuit breaker is again that moving contact is isolated in rotation.

6, a kind of novel high-pressure switch cubicle that has circuit breaker according to claim 1 is characterized in that: on to isolate fixed contact be again wall bushing.