CN218678202U

CN218678202U - Atmospheric sealed air insulation switch cabinet

Info

Publication number: CN218678202U
Application number: CN202222652277.5U
Authority: CN
Inventors: 彭康寿; 彭康富
Original assignee: Conde Electrical Equipment Co ltd
Current assignee: Conde Electrical Equipment Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-03-21
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a normal pressure sealed air insulation switch cabinet belongs to electrical equipment technical field, and this normal pressure sealed air insulation switch cabinet includes: a chassis; the high-voltage chamber is arranged on the underframe and is of a stainless steel sealing structure, a vacuum circuit breaker and a three-station isolating switch are arranged in the high-voltage chamber, inner conical bus sleeves are respectively arranged on the front side plate and the rear side plate of the high-voltage chamber, and a bent outgoing line insulating sleeve is arranged on the bottom plate of the high-voltage chamber; the mechanism chamber is arranged on the bottom frame, is positioned on the right side of the high-voltage chamber and is formed by splicing metal plates, and a vacuum circuit breaker operating mechanism and a three-station isolating switch operating mechanism are arranged in the mechanism chamber; and the secondary component control chamber is used for controlling the secondary component to be arranged above the mechanism chamber. This sealed air insulated switchgear of ordinary pressure passes through chassis, high-pressure chamber, mechanism room, secondary components and parts control's rational arrangement, has effectively reduced the size of whole cubical switchboard, and the operating personnel of being convenient for controls and maintains equipment.

Description

Atmospheric sealed air insulation switch cabinet

Technical Field

The utility model belongs to the technical field of the electrical equipment technique and specifically relates to a sealed air insulated switchgear of ordinary pressure is related to.

Background

Currently, ring main units in the market mainly include ring main units using SF6, N2 and other gases or their composite gases as insulating media, and open-type air-insulated ring main units. Although the insulating performance of the ring main unit insulated by taking gases such as SF6, N2 and the like or compound gases thereof as media is far stronger than that of an air insulating cabinet, sulfur hexafluoride (SF 6) gas molecules have potential harm to the greenhouse effect, and the open type air insulating ring main unit is inevitably influenced by the external environment due to the open structure.

Therefore, in recent years, many manufacturers are researching and developing atmospheric sealed air-insulated cabinets, but the overall structure of the existing atmospheric sealed switch cabinet is too large due to the complex internal structure, so that the maintenance of operators and equipment is inconvenient, and the atmospheric sealed switch cabinet with small volume is easy to have the condition that the air insulation clear distance or the creepage distance cannot meet the standard requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an at least solve one of the technical problem who exists among the prior art, for this reason, the utility model provides a normal pressure sealed air insulation switch cabinet can be under the condition of guaranteeing air insulation clear distance and creep distance, reduces the size of switch cabinet.

According to the utility model discloses atmospheric seal air insulation switch cabinet, include: a chassis; the high-voltage chamber is arranged on the underframe and is of a stainless steel sealing structure, a vacuum circuit breaker and a three-station isolating switch are arranged in the high-voltage chamber, inner conical bus sleeves are respectively arranged on the front side plate and the rear side plate of the high-voltage chamber, and a bent outgoing line insulating sleeve is arranged on the bottom plate of the high-voltage chamber; the mechanism chamber is arranged on the bottom frame, is positioned on the right side of the high-voltage chamber and is formed by splicing metal plates, and a vacuum circuit breaker operating mechanism and a three-station isolating switch operating mechanism are arranged in the mechanism chamber; the secondary component control chamber is arranged above the mechanism chamber in a control mode.

According to the utility model discloses atmospheric seal air insulation switch cabinet has following beneficial effect at least: this sealed air insulated switchgear of ordinary pressure passes through chassis, high-pressure chamber, mechanism room, secondary components and parts control's rational arrangement, has effectively reduced the size of whole cubical switchboard, and the operating personnel of being convenient for controls and maintains equipment. Through the reasonable arrangement of the transmission mechanism in the vacuum circuit breaker, the air occupied by the vacuum circuit breaker is reduced, and the air insulation clear distance and the creepage distance are ensured.

According to the utility model discloses a some embodiments still are equipped with cable chamber and pressure relief room on the chassis, and cable chamber and pressure relief room all are located the hyperbaric chamber downside, and the bending type is qualified for the next round of competitions insulation support and is worn to establish in hyperbaric chamber and cable chamber.

According to some embodiments of the invention, the vacuum circuit breaker comprises: the vacuum arc extinguish chamber is arranged in the high-voltage chamber, an insulating pull rod penetrates through the vacuum arc extinguish chamber, and the insulating pull rod is connected with the moving end of the vacuum arc extinguish chamber; the circuit breaker main shaft is arranged in the high-voltage chamber and is positioned in front of the vacuum arc-extinguishing chamber; and the main shaft of the circuit breaker is connected with one end, far away from the moving end, of the insulating pull rod through the connecting rod mechanism.

According to some embodiments of the utility model, the lower extreme of insulating pull rod is provided with the connecting rod, and vacuum interrupter's the end that moves is connected to the connecting rod, and the inside of connecting rod is provided with the overtravel spring.

According to some embodiments of the utility model, three station isolator settings are at the vacuum interrupter lower extreme.

According to some embodiments of the utility model, the circuit breaker main shaft all adopts the epoxy material to make.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

fig. 1 is a schematic structural view of an atmospheric-pressure sealed air-insulated switchgear according to an embodiment of the present invention;

FIG. 2 is a left side view of the plenum of FIG. 1;

fig. 3 is a left side view of the vacuum interrupter of fig. 1.

Reference numerals:

a base frame 100; a pressure relief chamber 110; a cable chamber 120;

a high pressure chamber 200; a vacuum interrupter 210; a vacuum arc-extinguishing chamber 211; an insulated pull rod 212; a breaker main shaft 213; a linkage 214; a connecting rod 215; a three-position disconnecting switch 220; an inner tapered bus sleeve 230; a bent outlet insulation sleeve 240;

a mechanism chamber 300; a vacuum interrupter operating mechanism 310; a three-position disconnector operating mechanism 320;

the secondary component control chamber 400.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of meanings are one or more, a plurality of meanings are two or more, and the terms greater than, smaller than, exceeding, etc. are understood as excluding the number, and the terms greater than, lower than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The normal pressure sealing air insulation switch cabinet according to the embodiment of the invention is described with reference to fig. 1 to 3.

As shown in fig. 1 to fig. 3, the utility model discloses sealed air insulated switchgear of ordinary pressure, include: a chassis 100; the high-voltage chamber 200 is arranged on the underframe 100, the high-voltage chamber 200 is of a stainless steel sealing structure, a vacuum circuit breaker 210 and a three-station disconnecting switch 220 are arranged in the high-voltage chamber 200, inner conical bus sleeves 230 are respectively arranged on front and rear side plates of the high-voltage chamber 200, and a bent outgoing line insulating sleeve 240 is arranged on a bottom plate of the high-voltage chamber 200; the mechanism chamber 300 is arranged on the bottom frame 100, the mechanism chamber 300 is positioned on the right side of the high-voltage chamber 200, the mechanism chamber 300 is formed by splicing metal plates, and a vacuum circuit breaker operating mechanism 310 and a three-station disconnecting switch operating mechanism 320 are arranged in the mechanism chamber 300; and a secondary component control chamber 400, which is disposed above the mechanism chamber 300.

As shown in fig. 1 and fig. 2, a high-pressure chamber 200 is arranged on the chassis 100, the high-pressure chamber 200 is a stainless steel sealed box, a mechanism chamber 300 is arranged on the right side of the high-pressure chamber 200, a two-dimensional component control chamber 400 is arranged on the upper side of the mechanism chamber 300, a vacuum circuit breaker 210 and a three-position disconnecting switch 220 are arranged in the high-pressure chamber 200, and a bent outgoing line insulating sleeve 240 is arranged on the bottom plate of the high-pressure chamber 200; the inner conical bus sleeves 230 are arranged on the front side plate and the rear side plate of the high-voltage chamber 200, components in the high-voltage chamber 200 can be connected with external high-voltage cables through the bent outgoing line insulating sleeves 240 and the inner conical bus sleeves 230, meanwhile, the high-voltage chamber 200 still keeps a sealing state, and the high-voltage components are sealed in a stainless steel sealing box body. The right cover plate of the high-pressure chamber 200 is provided with a mechanism chamber 300 assembled by a sheet metal shell, a vacuum circuit breaker operating mechanism 310, a three-position isolating switch operating mechanism 320 and a linkage piece thereof are arranged in the mechanism chamber 300, and the opening and closing states of the vacuum circuit breaker 210 and the three-position isolating switch 220 in the high-pressure chamber 200 can be changed by controlling the vacuum circuit breaker operating mechanism 310 and the three-position isolating switch operating mechanism 320 in the mechanism chamber 300.

The chassis 100 is provided with a pressure relief chamber 110 and a cable chamber 120, and the pressure relief chamber 110 and the cable chamber 120 are partitioned by a partition. Thereby the lower part of hyperbaric chamber 200 is connected with T type cable head through bending type play spool and is connected with high tension cable, exports the high tension electricity through interior taper bus-bar bushing 230 that sets up on the curb plate around the hyperbaric chamber 200 to make this ordinary pressure sealed air insulated switchgear touchable part all keep apart with high tension electricity.

As shown in fig. 3, the vacuum circuit breaker 210 includes: the vacuum arc extinguish chamber 211 is arranged in the high-voltage chamber 200, an insulating pull rod 212 penetrates through the vacuum arc extinguish chamber 211, and the insulating pull rod 212 is connected with the movable end of the vacuum arc extinguish chamber 211; a breaker main shaft 213, the breaker main shaft 213 is arranged in the high-voltage chamber 200, and the breaker main shaft 213 is positioned in front of the vacuum arc-extinguishing chamber 211; the link mechanism 214 and the breaker spindle 213 are connected with one end of the insulating pull rod 212 far away from the moving end through the link mechanism 214. The lower end of the insulating pull rod 212 is provided with a connecting rod 215, the connecting rod 215 is connected with the movable end of the vacuum arc-extinguishing chamber 211, and an overtravel spring is arranged inside the connecting rod 215.

Therefore, the rotation of the main shaft 213 of the circuit breaker drives the insulating pull rod 212 to move up and down through the link mechanism 214214, and the insulating pull rod 212 moves up and down to drive the moving end of the vacuum arc-extinguishing chamber 211 to move up and down to complete the opening and closing actions. Satisfy the required clear distance of product and the creep distance requirement of corresponding voltage class through insulating pull rod 212, drive vacuum interrupter 211 through link mechanism 214 and insulating pull rod 212 and move the end action to the realization carries out quick separating brake motion to circuit breaker switch, makes the debugging of switch over-travel simpler and more convenient, can reduce the whole volume of cubical switchboard greatly simultaneously, satisfies the requirement of heavy current product, and reduces the manufacturing cost of switch.

In some embodiments of the present invention, the breaker spindle 213 is made of epoxy resin, and the epoxy resin has better heat resistance and electrical insulation, so as to ensure the insulation effect of the vacuum circuit breaker 210.

Therefore, the normal-pressure sealed air-insulated switch cabinet effectively reduces the size of the whole switch cabinet through reasonable arrangement of the chassis 100, the high-voltage chamber 200, the mechanism chamber 300 and the control of the quadratic element device, and is convenient for an operator to control and maintain equipment. Through the reasonable arrangement of the transmission mechanism in the vacuum circuit breaker 210, the air occupied by the vacuum circuit breaker 210 is reduced, and the air insulation clear distance and the creepage distance are ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. The utility model provides a sealed air insulated switchgear of ordinary pressure which characterized in that includes:

a chassis (100);

the high-voltage chamber (200) is arranged on the base frame (100), the high-voltage chamber (200) is of a stainless steel sealing structure, a vacuum circuit breaker (210) and a three-station disconnecting switch (220) are arranged in the high-voltage chamber (200), inner conical bus bushings (230) are respectively arranged on front and rear side plates of the high-voltage chamber (200), and a bent outgoing line insulating bushing (240) is arranged on a bottom plate of the high-voltage chamber (200);

the mechanism chamber (300), the mechanism chamber (300) is arranged on the bottom frame (100), the mechanism chamber (300) is positioned on the right side of the high-pressure chamber (200), the mechanism chamber (300) is formed by splicing metal plates, and a vacuum circuit breaker operating mechanism (310) and a three-position disconnecting switch operating mechanism (320) are arranged in the mechanism chamber (300);

and the secondary component control chamber (400) is used for controlling and arranging the secondary component above the mechanism chamber (300).

2. The atmospheric-pressure sealed air-insulated switchgear cabinet according to claim 1, wherein a cable chamber (120) and a pressure relief chamber (110) are further disposed on the bottom frame (100), the cable chamber (120) and the pressure relief chamber (110) are both located at a lower side of the high-pressure chamber (200), and the bent outlet insulation sleeve (240) is inserted into the high-pressure chamber (200) and the cable chamber (120).

3. Atmospheric-pressure-sealed air-insulated switchgear cabinet according to claim 1, characterized in that said vacuum circuit breaker (210) comprises:

the vacuum arc-extinguishing chamber (211) is arranged in the high-pressure chamber (200), an insulating pull rod (212) penetrates through the vacuum arc-extinguishing chamber (211), and the insulating pull rod (212) is connected with the movable end of the vacuum arc-extinguishing chamber (211);

a circuit breaker main shaft (213), the circuit breaker main shaft (213) being disposed within the high pressure chamber (200), the circuit breaker main shaft (213) being located in front of the vacuum interrupter (211);

and the main shaft (213) of the circuit breaker is connected with one end, far away from the moving end, of the insulating pull rod (212) through the link mechanism (214).

4. The atmospheric-pressure sealed air-insulated switchgear cabinet according to claim 3, characterized in that the lower end of the insulated pull rod (212) is provided with a connecting rod (215), the connecting rod (215) is connected with the moving end of the vacuum interrupter (211), and the inside of the connecting rod (215) is provided with an overtravel spring.

5. The atmospheric-pressure sealed air-insulated switchgear cabinet according to claim 3, characterized in that said three-position disconnector (220) is arranged at the lower end of said vacuum interrupter (211).

6. An atmospheric-pressure-sealed air-insulated switchgear cabinet according to claim 3, characterized in that the breaker main shaft (213) is made of epoxy resin material.