阅读说明：本技术 一种电磁斥力盘置于真空灭弧室内部的真空开关装置 (Vacuum switch device with electromagnetic repulsion disc arranged inside vacuum arc extinguish chamber ) 是由 常晓雪 冯卫刚 刘志远 马慧 耿英三 王建华 于 2021-08-24 设计创作，主要内容包括：一种电磁斥力盘置于真空灭弧室内部的真空开关装置,属于电力开关领域,通过真空灭弧室的动端盖板的特殊设计,将电磁斥力操动机构的电磁斥力盘固定在真空灭弧室内部动导电杆上；所述动端盖板为与灭弧室外壳上端和波纹管下端连接的,直径大于灭弧室外壳的中空腔体,固定在真空灭弧室内部动导电杆上的电磁斥力盘两端位于中空腔体两侧的凸出位置内部,凸出位置下侧和上侧分别设置有分闸线圈与合闸线圈；当电流流过合闸线圈或分闸线圈时,能够对电磁斥力盘产生电动斥力,从而驱动电磁斥力盘带动动导电杆运动实现真空灭弧室分合闸。本发明的一种电磁斥力盘置于真空灭弧室内部的真空开关装置,具有每相可以独立安装、结构紧凑、体积小等优点。(A vacuum switch device with an electromagnetic repulsion disc arranged inside a vacuum arc extinguish chamber belongs to the field of power switches, and the electromagnetic repulsion disc of an electromagnetic repulsion operating mechanism is fixed on a movable conducting rod inside the vacuum arc extinguish chamber through the special design of a movable end cover plate of the vacuum arc extinguish chamber; the movable end cover plate is a hollow cavity which is connected with the upper end of the arc extinguish chamber shell and the lower end of the corrugated pipe and has a diameter larger than that of the arc extinguish chamber shell, two ends of an electromagnetic repulsion plate which is fixed on a movable conducting rod in the vacuum arc extinguish chamber are positioned in protruding positions on two sides of the hollow cavity, and the lower side and the upper side of each protruding position are respectively provided with an opening coil and a closing coil; when current flows through the closing coil or the opening coil, electric repulsion force can be generated on the electromagnetic repulsion plate, so that the electromagnetic repulsion plate is driven to drive the movable conducting rod to move to realize the opening and closing of the vacuum arc extinguish chamber. The vacuum switch device with the electromagnetic repulsion disc arranged inside the vacuum arc extinguish chamber has the advantages that each phase can be independently installed, the structure is compact, the size is small, and the like.)

1. The utility model provides an inside vacuum switch device of vacuum interrupter is arranged in to electromagnetism repulsion dish which characterized in that: the electromagnetic repulsion plate (201) of the electromagnetic repulsion operating mechanism is fixed on a movable conducting rod (102) in the vacuum arc extinguish chamber through the special design of a movable end cover plate (101) of the vacuum arc extinguish chamber; the movable end cover plate (101) is a hollow cavity which is connected with the upper end of an arc extinguishing chamber shell and the lower end of a corrugated pipe (103) and has a diameter larger than that of the arc extinguishing chamber shell, two ends of an electromagnetic repulsion plate (201) which is fixed on a movable conducting rod (102) in the vacuum arc extinguishing chamber are positioned in protruding positions on two sides of the hollow cavity, and the lower side and the upper side of each protruding position are respectively provided with a brake opening coil (202) and a brake closing coil (203); when current flows through the closing coil (203) or the opening coil (202), electric repulsion can be generated on the electromagnetic repulsion plate (201), so that the electromagnetic repulsion plate (201) is driven to drive the movable conducting rod (102) to move, and the opening and closing of the vacuum arc extinguish chamber are realized.

2. The vacuum switch device with electromagnetic repulsion disk placed inside the vacuum arc-extinguishing chamber according to claim 1, characterized in that: the movable end cover plate (101) is made of a metal material with low magnetic conductivity, so that magnetic lines of force generated by currents in the closing coil (202) and the opening coil (203) can penetrate through the movable end cover plate (101) and induce eddy currents in the electromagnetic repulsion plate (201), and the movable conducting rod (102) is driven to move.

3. The vacuum switch device with electromagnetic repulsion disk placed inside the vacuum arc-extinguishing chamber according to claim 2, characterized in that: the metal material with low magnetic permeability is stainless steel.

4. The vacuum switch device with electromagnetic repulsion disk placed inside the vacuum arc-extinguishing chamber according to claim 1, characterized in that: the diameter of the movable end cover plate (101) is 1-20mm larger than that of the vacuum arc-extinguishing chamber, and the height of the movable end cover plate is 1-20mm larger than the rated contact gap distance of the vacuum arc-extinguishing chamber.

5. The vacuum switch device with electromagnetic repulsion disk placed inside the vacuum arc-extinguishing chamber according to claim 1, characterized in that: the corrugated pipe (103) is connected with the upper part of the movable end cover plate (101) of the vacuum arc-extinguishing chamber and the movable conducting rod (102), so that the vacuum arc-extinguishing chamber is ensured to meet the basic airtightness and motion characteristics, and meanwhile, the arrangement of the electromagnetic repulsion disc (201) is not interfered; or the bellows (103) is replaced by a flexible connection.

6. The vacuum switch device with electromagnetic repulsion disk placed inside the vacuum arc-extinguishing chamber according to claim 1, characterized in that: the diameter of the electromagnetic repulsion disc (201) is 1-20mm smaller than that of the movable end cover plate (101).

Technical Field

The invention belongs to the technical field of power switches, and particularly relates to a vacuum switch device with an electromagnetic repulsion disc arranged in a vacuum arc extinguish chamber.

Background

The vacuum arc-extinguishing chamber is a key component of a medium-high voltage power switch, and has the main functions of rapidly extinguishing arc and inhibiting current after a medium-high voltage circuit is cut off a power supply through excellent insulation of vacuum in a tube, so that accidents and accidents are avoided. The vacuum arc extinguish chamber is mainly applied to a power transmission and distribution control system, and has the advantages of fire prevention, explosion prevention, small volume, long service life, low maintenance cost, reliable operation, no pollution and the like

The operation structure mainly used by the existing vacuum circuit breaker comprises a pneumatic structure, a permanent magnet mechanism, a spring mechanism, a repulsion structure and the like, wherein the pneumatic structure is long in mechanical life, the permanent magnet mechanism is stable in opening and closing, and the spring mechanism is low in cost. However, the mechanisms are too large in size, inconvenient to install, long in debugging time and more in electric parts of the operating mechanisms. The repulsion structure has smaller volume and higher opening and closing speed.

Among the components of the vacuum switch, the operating mechanism is generally placed outside the vacuum arc-extinguishing chamber, so that the overall volume of the vacuum switch is large, and each phase is inconvenient to install independently due to the separation of the operating mechanism and the arc-extinguishing chamber.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide a vacuum switch device with an electromagnetic repulsion disc arranged in a vacuum arc-extinguishing chamber, and the vacuum switch device has the advantages of independent installation of each phase, compact structure, small volume and the like.

In order to achieve the purpose, the invention adopts the technical scheme that:

a vacuum switch device with an electromagnetic repulsion disc arranged inside a vacuum arc-extinguishing chamber is characterized in that the electromagnetic repulsion disc 201 of an electromagnetic repulsion operating mechanism is fixed on a movable conducting rod 102 inside the vacuum arc-extinguishing chamber through the special design of a movable end cover plate 101 of the vacuum arc-extinguishing chamber; the movable end cover plate 101 is a hollow cavity which is connected with the upper end of the arc extinguish chamber shell and the lower end of the corrugated pipe 103, the diameter of the hollow cavity is larger than that of the arc extinguish chamber shell, two ends of an electromagnetic repulsion plate 201 which is fixed on a movable conducting rod 102 in the vacuum arc extinguish chamber are positioned in protruding positions on two sides of the hollow cavity, and the lower side and the upper side of the protruding positions are respectively provided with an opening coil 202 and a closing coil 203; when current flows through the closing coil 203 or the opening coil 202, an electric repulsion force can be generated on the electromagnetic repulsion plate 201, so that the electromagnetic repulsion plate 201 is driven to drive the movable conducting rod 102 to move, and the opening and closing of the vacuum arc extinguish chamber are realized.

The movable end cover plate 101 is made of a metal material with low magnetic conductivity, so that magnetic lines of force generated by currents in the closing coil 202 and the opening coil 203 can penetrate through the movable end cover plate 101 and induce eddy currents in the electromagnetic repulsion plate 201, and the movable conducting rod 102 is driven to move.

The metal material with low magnetic permeability is stainless steel.

The diameter of the movable end cover plate 101 is 1-20mm larger than that of the vacuum arc-extinguishing chamber, and the height of the movable end cover plate is 1-20mm larger than the rated contact gap distance of the vacuum arc-extinguishing chamber.

The corrugated pipe 103 is connected with the upper part of the movable end cover plate 101 of the vacuum arc-extinguishing chamber and the movable conducting rod 102, so that the vacuum arc-extinguishing chamber is ensured to meet the basic airtightness and motion characteristics, and meanwhile, the arrangement of the electromagnetic repulsion disc 201 is not interfered; or the bellows 103 is replaced by a soft connection.

The diameter of the electromagnetic repulsion disk 201 is 1-20mm smaller than that of the movable end cover plate 101.

Patent CN107481889B proposes a self-operating vacuum interrupter and a self-operating method thereof, in which the self-operating vacuum interrupter uses an electromagnetic repulsion mechanism and the electromagnetic repulsion plate, the opening coil and the closing coil of the electromagnetic repulsion mechanism are all placed inside the vacuum interrupter, thereby realizing the self-operation of the vacuum interrupter.

However, the self-operating vacuum arc-extinguishing chamber has the disadvantages that the connection of the secondary circuits between the closing coil and the opening coil and the capacitor is difficult because the closing coil and the opening coil of the repulsion operating mechanism are arranged in the vacuum arc-extinguishing chamber; meanwhile, the movable conducting rod is completely positioned inside the vacuum arc extinguish chamber, so that the vacuum arc extinguish chamber is large in size. Compared with the technology, the invention has the following advantages: only place electromagnetic repulsion dish (201) in vacuum interrupter inside, place closing coil (203) and separating brake coil (202) in the outer bulge upper and lower both sides of vacuum interrupter movable end apron (101) to place the operating mechanism part outside vacuum interrupter, make vacuum switch's overall structure simpler, compact, reliable. The invention makes the whole volume of the vacuum switch device smaller by the arrangement mode of each part. In addition, the closing coil (203) and the opening coil (202) are positioned outside the vacuum arc-extinguishing chamber, so that the line connection is facilitated. The vacuum arc extinguish chamber and the electromagnetic repulsion mechanism are integrated into a whole, so that each phase can be conveniently and independently installed and operated.

Drawings

Fig. 1 is a front sectional view of a vacuum switchgear in which an electromagnetic repulsion disk of the present invention is disposed inside a vacuum interrupter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, in the vacuum switch device with an electromagnetic repulsion disk disposed inside a vacuum interrupter according to the present invention, the electromagnetic repulsion disk 201 of the electromagnetic repulsion operating mechanism is fixed on the movable conducting rod 102 inside the vacuum interrupter through the special design of the movable end cover plate 101 of the vacuum interrupter; the movable end cover plate 101 is a hollow cavity which is connected with the upper end of the arc extinguish chamber shell and the lower end of the corrugated pipe 103, the diameter of the hollow cavity is larger than that of the arc extinguish chamber shell, two ends of an electromagnetic repulsion plate 201 which is fixed on a movable conducting rod 102 in the vacuum arc extinguish chamber are positioned in protruding positions on two sides of the hollow cavity, and the lower side and the upper side of the protruding positions are respectively provided with an opening coil 202 and a closing coil 203; when current flows through the closing coil 203 or the opening coil 202, an electric repulsion force can be generated on the electromagnetic repulsion plate 201, so that the electromagnetic repulsion plate 201 is driven to drive the movable conducting rod 102 to move, and the opening and closing of the vacuum arc extinguish chamber are realized.

As a preferred embodiment of the present invention, the moving end cover plate 101 is made of a metal material with low magnetic permeability, such as stainless steel, so as to ensure that magnetic lines of force generated by the current in the closing coil 202 and the opening coil 203 can pass through the moving end cover plate 101 and induce eddy currents in the electromagnetic repulsion disk 201, thereby driving the moving conducting rod 102 to move.

As a preferred embodiment of the invention, the diameter of the movable end cover plate 101 is 1-20mm larger than the diameter of the vacuum arc-extinguishing chamber, and the height is 1-20mm larger than the rated contact gap distance of the vacuum arc-extinguishing chamber.

As a preferred embodiment of the present invention, the bellows 103 is connected with the upper part of the movable end cover plate 101 of the vacuum interrupter and the movable conducting rod 102, so as to ensure that the vacuum interrupter meets basic airtightness and motion characteristics, and meanwhile, the arrangement of the electromagnetic repulsion disk 201 is not interfered; the bellows 103 may also be replaced by a flexible connection.

In a preferred embodiment of the present invention, the diameter of the electromagnetic repulsion disk 201 is 1-20mm smaller than the diameter of the movable end cover plate 101.

When the vacuum arc-extinguishing chamber is opened, the electromagnetic repulsion disc 201 and the movable conducting rod 102 vertically move downwards under the action of electromagnetic repulsion generated by the opening coil 203, so that opening operation is completed, and the corrugated pipe 103 is compressed; when the electromagnetic repulsion operating mechanism performs a closing operation, the repulsion plate 201, together with the moving conductive rod 102 and the moving contact, makes a vertical upward movement under the action of the electromagnetic repulsion generated by the closing coil 202, completing the closing operation, and the corrugated pipe 103 is extended.