CN213959555U

CN213959555U - High-current gas-insulated metal-enclosed switchgear

Info

Publication number: CN213959555U
Application number: CN202022804285.8U
Authority: CN
Inventors: 潘菊年; 周强; 薛坤
Original assignee: Migo Electric Jiangsu Co ltd
Current assignee: Jiangsu Mige Electric Group Co.,Ltd.
Priority date: 2020-11-29
Filing date: 2020-11-29
Publication date: 2021-08-13
Anticipated expiration: 2030-11-29

Abstract

The utility model relates to a heavy current gas insulation metal enclosed switchgear, it includes the secondary cell top is equipped with the little generating line room secondary cell below is equipped with the mechanism room the other gas tank that is equipped with of mechanism room below is equipped with the cable chamber the other pressure relief room that is equipped with of cable chamber. The utility model discloses can realize 1250A heavy current, the high breaking capacity of 31.5 kA.

Description

High-current gas-insulated metal-enclosed switchgear

Technical Field

The utility model relates to a switchgear, concretely relates to heavy current metal enclosed switchgear.

Background

At present, the rated current of the gas insulation ring main unit is generally 630A, and the protection function of the circuit breaker is simpler. Although the rated current of the central switch cabinet is above 1250A, the circuit breaker has strong protection function, but the central switch cabinet is air-insulated, has huge size and large floor area compared with a gas-insulated cabinet, and needs regular maintenance.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims at overcoming not enough among the prior art, provide a 1250A heavy current, the high gas insulated metal enclosed switchgear of the high breaking capacity of 31.5 kA.

The technical scheme is as follows: in order to solve the technical problem, the utility model relates to a high current gas insulated metal enclosed switchgear, which comprises a secondary chamber, a small bus chamber is arranged above the secondary chamber, a mechanism chamber is arranged below the secondary chamber, a gas tank is arranged beside the mechanism chamber, a cable chamber is arranged below the mechanism chamber, a pressure relief chamber is arranged beside the cable chamber, a secondary through grounding row is arranged at the bottom in the secondary chamber, a gas density relay is arranged at the upper part in the mechanism chamber, a three-position switch operating mechanism is arranged below the gas density relay, a vacuum circuit breaker operating mechanism is arranged below the three-position switch operating mechanism, an aviation socket is arranged on the vacuum circuit breaker operating mechanism, a top expanding sleeve is arranged at the upper part in the gas tank, an upper bus is arranged below the top expanding sleeve, a three-position isolating switch is arranged below the upper bus, the three-station disconnecting switch is characterized in that a vacuum circuit breaker is arranged below the three-station disconnecting switch, a lower bus is arranged below the vacuum circuit breaker, a wire outlet sleeve is arranged between the gas box and the cable chamber, and a primary main grounding bar is arranged at the bottom of the cable chamber.

Furthermore, the vacuum circuit breaker comprises a grounding contact, a middle static contact is arranged beside the grounding contact, a movable conducting rod is arranged in the middle static contact, an isolation contact is arranged beside the middle static contact, and the middle static contact is connected with the wall of the gas tank through a solid-sealed pole.

Furthermore, an access window is arranged on the air box.

Further, the gas tank is a stainless steel gas tank.

Further, the gas tank is filled with insulating gas.

Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: the utility model has reasonable overall structure, adopts SF6 gas insulation and vacuum breaking in the equipment, realizes the opening and closing of a primary circuit by sealing all primary charged parts such as a circuit breaker, a three-position isolating switch, a bus, a sleeve and the like in a stainless steel welding gas tank filled with gas with certain pressure SF6, adopts an aluminum alloy sealing door to demarcate on a front box plate of the gas tank, adopts a vacuum bubble solid-sealed pole structure to be connected with an operating mechanism through a corrugated pipe, is reliable to use, adopts an upper isolating upper grounding structure, utilizes a vacuum arc extinguish chamber to break rated or short-circuit current, is pre-grounded by the grounding switch during grounding, closes the vacuum circuit breaker again, can carry out more times of operation on faults, adopts a three-position switch to form isolation and grounding, has small structure and high reliability, simplifies a primary main circuit, and has less maintenance in the whole cabinet, can realize 1250A large current and 31.5kA high breaking capacity.

Drawings

Fig. 1 is a frame diagram of the present invention;

FIG. 2 is an internal structural view of the present invention;

fig. 3 is the installation and setting structure schematic diagram of the operating mechanism of the vacuum circuit breaker, the aviation socket and the three-position switch operating mechanism.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1, 2 and 3, the high current gas insulated metal enclosed switchgear of the present invention comprises a secondary chamber 1, a small bus chamber 2 is disposed above the secondary chamber 1, a mechanism chamber 3 is disposed below the secondary chamber 1, an air tank 4 is disposed beside the mechanism chamber 3, the air tank 4 is a stainless steel air tank, the air tank 4 is filled with insulating gas, a cable chamber 5 is disposed below the mechanism chamber 3, a pressure relief chamber 6 is disposed beside the cable chamber 5, a secondary through ground drain 7 is disposed at the bottom of the secondary chamber 1, a gas density relay 8 is disposed at the upper portion of the mechanism chamber 3, a three-position switch operating mechanism 9 is disposed below the gas density relay 8, a vacuum circuit breaker operating mechanism 10 is disposed below the three-position switch operating mechanism 9, an aviation socket 11 is disposed on the vacuum circuit breaker operating mechanism 10, the gas tank is characterized in that a top expansion sleeve 12 is arranged at the upper part in the gas tank 4, an upper bus 13 is arranged below the top expansion sleeve 12, a three-station isolating switch 14 is arranged below the upper bus 13, a vacuum circuit breaker 15 is arranged below the three-station isolating switch 14, the vacuum circuit breaker 15 comprises a grounding contact 19, a middle static contact 20 is arranged beside the grounding contact 19, a movable conducting rod 21 is arranged in the middle static contact 20, an isolating contact 22 is arranged beside the middle static contact 20, the middle static contact 20 is connected with the wall of the gas tank 4 through a fixing and sealing pole 23, an access window 24 is arranged on the gas tank 4, a lower bus 16 is arranged below the vacuum circuit breaker 15, a wire outlet sleeve 17 is arranged between the gas tank 4 and the cable chamber 5, and a primary main grounding bar 18 is arranged at the bottom of the cable chamber 5. The utility model has reasonable overall structure, adopts SF6 gas insulation and vacuum breaking in the equipment, realizes the opening and closing of a primary circuit by sealing all primary charged parts such as a circuit breaker, a three-position isolating switch, a bus, a sleeve and the like in a stainless steel welding gas tank filled with gas with certain pressure SF6, adopts an aluminum alloy sealing door to demarcate on a front box plate of the gas tank, adopts a vacuum bubble solid-sealed pole structure to be connected with an operating mechanism through a corrugated pipe, is reliable to use, adopts an upper isolating upper grounding structure, utilizes a vacuum arc extinguish chamber to break rated or short-circuit current, is pre-grounded by the grounding switch during grounding, closes the vacuum circuit breaker again, can carry out more times of operation on faults, adopts a three-position switch to form isolation and grounding, has small structure and high reliability, simplifies a primary main circuit, and has less maintenance in the whole cabinet, can realize 1250A large current and 31.5kA high breaking capacity.

The utility model provides a thinking and method, the method and the way of specifically realizing this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as the utility model discloses a protection range, each component that does not make clear and definite in this embodiment all can be realized with prior art.

Claims

1. The utility model provides a heavy current gas insulated metal enclosed switchgear which characterized in that: it includes secondary cell (1) be equipped with little bus-bar room (2) secondary cell (1) top be equipped with mechanism room (3) below secondary cell (1) be equipped with other gas tank (4) of being equipped with of mechanism room (3) be equipped with cable chamber (5) below mechanism room (3) be equipped with pressure relief room (6) by cable chamber (5) the bottom is equipped with secondary and runs through ground row (7) in secondary cell (1) the upper portion is equipped with gas density relay (8) in mechanism room (3) the gas density relay (8) below is equipped with three station switch operating device (9), be equipped with vacuum circuit breaker operating device (10) below three station switch operating device (9) be equipped with aviation socket (11) on vacuum circuit breaker operating device (10) upper portion is equipped with top and expands sleeve pipe (12) in gas tank (4), top expand sleeve pipe (12) below and be equipped with last generating line (13) below is equipped with three station isolator (14) below is equipped with vacuum circuit breaker (15) below is equipped with down generating line (16) be equipped with between gas tank (4) and cable chamber (5) be equipped with wire outlet sleeve pipe (17) cable chamber (5) bottom is equipped with once main ground connection and arranges (18).

2. The high current gas insulated metal enclosed switchgear according to claim 1, characterized in that: the vacuum circuit breaker (15) comprises a grounding contact (19), a middle static contact (20) is arranged beside the grounding contact (19), a movable conducting rod (21) is arranged in the middle static contact (20), an isolation contact (22) is arranged beside the middle static contact (20), and the middle static contact (20) is connected with the wall of the gas tank (4) through a solid-sealed pole (23).

3. The high current gas insulated metal enclosed switchgear according to claim 1, characterized in that: an access window (24) is arranged on the air box (4).

4. The high current gas insulated metal enclosed switchgear according to claim 1, characterized in that: the gas tank (4) is a stainless steel gas tank.

5. The high current gas insulated metal enclosed switchgear according to claim 1, characterized in that: the air box (4) is filled with insulating gas.