CN221176068U - Vacuum circuit breaker for small-sized air insulation cabinet - Google Patents

Vacuum circuit breaker for small-sized air insulation cabinet Download PDF

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Publication number
CN221176068U
CN221176068U CN202323182798.XU CN202323182798U CN221176068U CN 221176068 U CN221176068 U CN 221176068U CN 202323182798 U CN202323182798 U CN 202323182798U CN 221176068 U CN221176068 U CN 221176068U
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CN
China
Prior art keywords
insulating
pull rod
rod
circuit breaker
epoxy resin
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Active
Application number
CN202323182798.XU
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Chinese (zh)
Inventor
安静
安宗姓
刘家成
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Zhejiang Yineng Power Equipment Co ltd
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Zhejiang Yineng Power Equipment Co ltd
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Priority to CN202323182798.XU priority Critical patent/CN221176068U/en
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Publication of CN221176068U publication Critical patent/CN221176068U/en
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Abstract

The utility model provides a vacuum circuit breaker for small-size air insulation cabinet, including installing three solid utmost point post on circuit breaker mechanism case, be equipped with vacuum interrupter and pull rod room in the solid utmost point post that seals, be equipped with insulating pull rod in the pull rod room, the one end connection of insulating pull rod moves the conducting rod, the other end connection of insulating pull rod is located the spring operating device of circuit breaker mechanism incasement, insulating pull rod includes epoxy pole and insulating support, the one end of epoxy pole is equipped with the location flange, the surface of epoxy pole is equipped with the insulating ring piece that the cross section is the I shape, be equipped with the location draw-in groove that is used for fixed mounting location flange on the insulating support, be equipped with insulating spacer between the both sides of location flange and the location draw-in groove. The creepage distance of the insulating pull rod can be improved through the insulating ring piece on the epoxy resin rod, and the insulating performance is enhanced between the epoxy resin rod and the insulating support through the insulating gasket, so that the total length of the insulating pull rod is conveniently reduced, the length of the pull rod chamber is reduced, and the miniaturization of the vacuum circuit breaker is facilitated.

Description

Vacuum circuit breaker for small-sized air insulation cabinet
Technical Field
The utility model relates to the field of circuit breakers, in particular to a vacuum circuit breaker for a small air insulation cabinet.
Background
The gas-insulated switchgear can be widely applied to power supply places such as intelligent substations, railways, rail transit, ships, offshore platforms, box-type substations and the like; is not affected by external environment basically, and can be normally used in special environments such as high altitude, high salt fog, high pollution and the like. At present, most of vacuum circuit breakers for air insulation switch cabinets in the market are relatively complex in structure, large in size, troublesome to operate and large in cabinet distribution appearance, and cannot meet the miniaturization requirement.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a vacuum circuit breaker for a small-sized air insulation cabinet.
The utility model solves the technical problems by adopting the technical scheme that: the utility model provides a vacuum circuit breaker for small-size air insulation cabinet, includes three solid utmost point post of installing on circuit breaker mechanism case, is equipped with vacuum interrupter and pull rod room in the solid utmost point post that seals, vacuum interrupter's both ends are equipped with quiet conducting rod and move the conducting rod, are equipped with wire terminal and incoming wire terminal on quiet conducting rod and the moving conducting rod respectively, be equipped with insulating pull rod in the pull rod room, the one end of insulating pull rod is connected and is moved the conducting rod, and the other end connection of insulating pull rod is located the spring operating mechanism of circuit breaker mechanism incasement, and spring operating mechanism is used for driving insulating pull rod and stretches out and draws back in order to realize closing and separating brake of quiet conducting rod and moving the conducting rod, insulating pull rod includes epoxy pole and insulating support, the one end of epoxy pole is equipped with the locating flange, and the other end fixed connection of epoxy pole moves the conducting rod, and the surface of epoxy pole is equipped with the insulating ring piece that the cross section is the I shape, insulating support connects spring operating mechanism, is equipped with the location draw-in groove that is used for fixed mounting locating flange on the insulating support, is equipped with insulating spacer between the both sides and the locating slot.
Further perfecting, the diameter of the outer circle of the insulating gasket is larger than that of the positioning flange, one side of the insulating gasket is provided with a fixed clamping ring in clearance fit with the outer circle of the positioning flange, and the diameter of the outer circle of the fixed clamping ring is smaller than that of the insulating gasket.
Further perfecting, annular ceramic plates protruding inwards are embedded on the inner wall of the pull rod chamber.
Further perfecting, the middle part of the vacuum arc-extinguishing chamber is provided with a shielding cover, and the inner wall of the shielding cover is provided with a corrugated surface.
The beneficial effects of the utility model are as follows: according to the insulating pull rod disclosed by the utility model, the epoxy resin rod and the insulating support are used, the creepage distance of the insulating pull rod can be increased by the insulating ring piece on the epoxy resin rod, and the insulating property is enhanced between the epoxy resin rod and the insulating support through the insulating gasket, so that the total length of the insulating pull rod is conveniently reduced, the length of a pull rod chamber is reduced, the length of the whole solid-sealed pole is conveniently reduced, and the miniaturization of a vacuum circuit breaker is facilitated.
Drawings
FIG. 1 is a schematic view (partially cut-away) of the structure of the present utility model;
fig. 2 is an enlarged schematic view of a partial structure in fig. 1.
Reference numerals illustrate: 1. the circuit breaker mechanism box 2, solid sealed polar pole, 3, vacuum interrupter, 4, pull rod room, 5, quiet conducting rod, 6, move conducting rod, 7, insulating pull rod, 8, spring operating mechanism, 9, epoxy rod, 10, insulating support, 11, positioning flange, 12, insulating ring piece, 13, positioning clamping groove, 14, insulating spacer, 15, fixed snap ring, 16, annular ceramic piece, 17, shield cover.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
Referring to fig. 1: the vacuum circuit breaker for the small-sized air insulation cabinet in the embodiment comprises three solid-sealed polar poles 2 arranged on a circuit breaker mechanism box 1, and is formed by vacuum casting of epoxy resin and is of a hollow tubular structure. The solid sealed pole 2 is internally provided with a vacuum arc-extinguishing chamber 3 and a pull rod chamber 4, two ends of the vacuum arc-extinguishing chamber 3 are provided with a static conductive rod 5 and a movable conductive rod 6, the static conductive rod 5 and the movable conductive rod 6 are respectively provided with an outgoing line terminal and an incoming line terminal, the static conductive rod 5 is cast and sealed at the upper end of the solid sealed pole 2, and the outgoing line terminal is reserved with a bolt hole and can be lapped with an incoming line copper bar. The wire inlet terminal is inlaid in the middle of the solid-sealed pole 2, the wire inlet terminal is plugged in the middle of the solid-sealed pole 3, the wire inlet terminal extends to the outside of the solid-sealed pole 2, a bolt hole is reserved on the wire inlet terminal, and the wire inlet terminal can be lapped with a wire inlet copper bar.
An insulating pull rod 7 is arranged in the pull rod chamber 4, one end of the insulating pull rod 7 is connected with the movable conductive rod 6, the other end of the insulating pull rod 7 is connected with a spring operating mechanism 8 positioned in the circuit breaker mechanism box 1, the spring operating mechanism 8 is used for driving the insulating pull rod 7 to stretch out and draw back so as to realize closing and opening of the static conductive rod 5 and the movable conductive rod 6, the static conductive rod 5 and the movable conductive rod 6 are coaxial, the end faces can be attached and conducted, and the insulating pull rod 7 plays roles of mechanical transmission and electrical insulation. Spring operated mechanisms are known in the art. The whole structure of the spring operating mechanism generally comprises a closing spring, an energy storage system, an overcurrent release, a closing and opening coil, a manual closing and opening system, an auxiliary switch, an energy storage indication and other components.
As shown in fig. 2, the insulation pull rod 7 comprises an epoxy resin rod 9 and an insulation support 10, one end of the epoxy resin rod 9 is provided with a positioning flange 11, the other end of the epoxy resin rod 9 is fixedly connected with the movable conductive rod 6, the surface of the epoxy resin rod 9 is provided with an insulation ring piece 12 with an i-shaped cross section, and the creepage distance of the insulation pull rod can be increased, so that the total length of the insulation pull rod is conveniently reduced, the length of a pull rod chamber is reduced, the length of the whole solid sealing pole is conveniently reduced, and the miniaturization of a vacuum circuit breaker is facilitated. The insulating support 10 is connected with the spring operating mechanism 8, the insulating support 10 is provided with a positioning clamping groove 13 for fixedly mounting the positioning flange 11, insulating gaskets 14 are arranged between the two sides of the positioning flange 11 and the positioning clamping groove 13, and the insulating gaskets 14 can enhance the insulating performance between the epoxy resin rod and the insulating support, so that the separation between the epoxy resin rod 9 and the spring operating mechanism is realized.
The diameter of the outer circle of the insulating gasket 14 is larger than that of the positioning flange 11, one side of the insulating gasket 14 is provided with a fixing snap ring 15 in clearance fit with the outer circle of the positioning flange 11, the fixing snap ring 15 is assembled with the positioning flange 11, the creepage distance between the positioning flange 11 and the positioning clamping groove can be increased, the insulating performance is enhanced, and the diameter of the outer circle of the fixing snap ring 15 is smaller than that of the outer circle of the insulating gasket 14.
The annular ceramic plate 16 protruding inwards is embedded on the inner wall of the pull rod chamber 4, so that the creepage distance of the inner wall of the pull rod chamber is increased, and the length of the whole solid-sealed pole is reduced conveniently.
The middle part of vacuum interrupter 3 is equipped with shield cover 17, is equipped with the ripple face on the inner wall of shield cover 17. The corrugated surface increases the inner surface area of the shield 17, thereby improving the efficiency of condensing the arc products. Thereby improving the insulating property of the vacuum arc-extinguishing chamber and being convenient for reducing the diameter and the length of the whole solid-sealed polar pole.
The insulating spacer 14 is made of alumina insulating ceramic material. A layer of resilient insulating spacer may be provided between the insulating spacer 14 and the alignment card slot to fill the gap. Alumina ceramic is an electrically insulating material with high resistivity. The high purity alumina ceramic is very suitable for various environments including environments requiring abrasion and corrosion resistant substances, and it also has excellent high temperature resistance.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.

Claims (4)

1. The utility model provides a vacuum circuit breaker for small-size air insulation cabinet, includes three solid utmost point post (2) of installing on circuit breaker mechanism case (1), is equipped with vacuum interrupter (3) and pull rod room (4) in solid utmost point post (2), the both ends of vacuum interrupter (3) are equipped with quiet conducting rod (5) and move conducting rod (6), are equipped with wire terminal and incoming wire terminal on quiet conducting rod (5) and the moving conducting rod (6) respectively, be equipped with insulating pull rod (7) in pull rod room (4), the one end of insulating pull rod (7) is connected and is moved conducting rod (6), and spring operating mechanism (8) that are located circuit breaker mechanism case (1) are connected to the other end of insulating pull rod (7), and spring operating mechanism (8) are used for driving insulating pull rod (7) and stretch out and draw back in order to realize closing and separating brake of quiet conducting rod (5) and moving conducting rod (6), its characterized in that: the insulation pull rod (7) comprises an epoxy resin rod (9) and an insulation support (10), one end of the epoxy resin rod (9) is provided with a positioning flange (11), the other end of the epoxy resin rod (9) is fixedly connected with a movable conducting rod (6), the surface of the epoxy resin rod (9) is provided with an insulation ring piece (12) with an I-shaped cross section, the insulation support (10) is connected with a spring operating mechanism (8), the insulation support (10) is provided with a positioning clamping groove (13) for fixedly mounting the positioning flange (11), and an insulation gasket (14) is arranged between two sides of the positioning flange (11) and the positioning clamping groove (13).
2. The vacuum interrupter for small air-insulated cabinets according to claim 1, wherein: the outer circle diameter of the insulating gasket (14) is larger than that of the positioning flange (11), one side of the insulating gasket (14) is provided with a fixed clamping ring (15) in clearance fit with the outer circle of the positioning flange (11), and the outer circle diameter of the fixed clamping ring (15) is smaller than that of the insulating gasket (14).
3. The vacuum interrupter for small air-insulated cabinets according to claim 1, wherein: an annular ceramic plate (16) protruding inwards is embedded on the inner wall of the pull rod chamber (4).
4. The vacuum interrupter for small air-insulated cabinets according to claim 1, wherein: the middle part of vacuum interrupter (3) is equipped with shield cover (17), is equipped with the ripple face on the inner wall of shield cover (17).
CN202323182798.XU 2023-11-23 2023-11-23 Vacuum circuit breaker for small-sized air insulation cabinet Active CN221176068U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202323182798.XU CN221176068U (en) 2023-11-23 2023-11-23 Vacuum circuit breaker for small-sized air insulation cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202323182798.XU CN221176068U (en) 2023-11-23 2023-11-23 Vacuum circuit breaker for small-sized air insulation cabinet

Publications (1)

Publication Number Publication Date
CN221176068U true CN221176068U (en) 2024-06-18

Family

ID=91531893

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202323182798.XU Active CN221176068U (en) 2023-11-23 2023-11-23 Vacuum circuit breaker for small-sized air insulation cabinet

Country Status (1)

Country Link
CN (1) CN221176068U (en)

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