CN202384194U

CN202384194U - Magnetic Auxiliary Switches for Disconnectors

Info

Publication number: CN202384194U
Application number: CN201120563024XU
Authority: CN
Inventors: 丛宝松; 徐斌; 潘海滨; 周昕
Original assignee: Chaou Power Supply Co of State Grid Anhui Electric Power Co Ltd
Current assignee: Chaou Power Supply Co of State Grid Anhui Electric Power Co Ltd
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2012-08-15
Anticipated expiration: 2021-12-29

Abstract

The utility model relates to a magnetic control type auxiliary switch for an isolating switch, which comprises an auxiliary switch protective cover and an isolating switch operating handle, wherein a permanent magnet is arranged at the top end of the handle, Hall switches are respectively arranged at two ends of the inner wall of the auxiliary switch protective cover, and the signal output ends of the two Hall switches are connected with a control circuit of a power system; the auxiliary switch protective cover is made of iron; the Hall switch is a unipolar Hall switch. The device adopts the magnetic control switch to replace the prior auxiliary switch adopting a mechanical structure, and the Hall switch is sealed and filled into a whole by adopting epoxy resin, so that the device can reliably work in various severe environments and can work for a long time without maintenance; meanwhile, the switch structure is simplified, and the equipment investment cost is reduced.

Description

The magnet controlled auxiliary switch that is used for isolating switch

[technical field]

The utility model relates to a kind of magnet controlled auxiliary switch that is used for isolating switch.

[background technology]

Isolating switch is an important device for switching in power plant and the transformer station's electrical system, is to use maximum a kind of electrical equipment in the high-voltage switch electric appliance, as its name suggests; Be in circuit, to play buffer action, use amount is big, and functional reliability requires high; Influence to design, foundation and the safe operation of electric substation, power plant is all bigger, needs and the supporting use of primary cut-out, and its major function is: guarantee High-Voltage Electrical Appliances and the safety of device when service work; Play isolation voltage; Can not with cut off, drop into load current and cut-off short circuit current, only can be used for not producing some handover operation of powerful electric arc, as there not being to divide under the situation of load current, close circuit.

Auxiliary switch be used for measuring, control, a kind of electric elements of main switch such as supervision, as the isolating switch motor-operating mechanism, want the adapted auxiliary switch; The auxiliary contact that auxiliary switch generally has the auxiliary contact more than 2 pairs just to say usually is through the purpose of on-off to reach control or to keep watch on main switch of contact.Traditional auxiliary switch auxiliary contact adopts mechanical structure, rotates the separating switch operating grip and divides fashionablely, and the auxiliary contact of interlock also thereupon deciliter with it.Because the long-term charged work of isolating switch; And major part is positioned over outdoor; The perishable oxidation of auxiliary contact need be cleaned the greasy dirt on contact or the fingertip through gasoline commonly used, and whether the inspection contact surface cleans; Have no mechanical damage, phenomenon such as oxidation and overheated vestige and distortion, distortion, expend time in very much.

[utility model content]

The utility model technical problem to be solved is to provide a kind of simple and reliable non-maintaining magnet controlled auxiliary switch that is used for isolating switch.

The technical scheme of the utility model is: the magnet controlled auxiliary switch that is used for isolating switch; Comprise auxiliary switch protective cover and isolator operation handle; Permanent magnet is equipped with on said handle top; Hall switch is equipped with at said auxiliary switch protective cover inwall two ends respectively, and the signal output part of two said Hall switch is connected with the electric power system control circuit.

As the further improvement of such scheme, said Hall switch is the unipolarity Hall switch.

The advantage of the utility model is: this device adopts magnetic switch to replace the existing auxiliary switch that adopts mechanical structure; Because Hall switch adopts the epoxy resin envelope to irritate being integral; So can be under all kinds of adverse circumstances reliable work, but long-term work need not be overhauled; Simplify construction of switch simultaneously, reduced the equipment input cost.

[description of drawings]

Combine embodiment that the utility model is done further to describe with reference to the accompanying drawings.

Fig. 1 is the structural representation of the utility model,

Fig. 2 is the electrical schematic diagram of the utility model.

[embodiment]

Referring to Fig. 1; The magnet controlled auxiliary switch that is used for isolating switch comprises auxiliary switch protective cover 1 and isolator operation handle 2, and permanent magnet 3 is equipped with on handle 2 tops; The auxiliary switch protective cover is an irony, and permanent magnet 3 can be adsorbed in auxiliary switch protective cover 1 a certain end through magneticaction.Protective cover inwall two ends are equipped with Hall switch HAL1, HAL2 respectively, and the signal output part of two Hall switch HAL1, HAL2 is drawn with the electric power system control circuit through lead and is connected.

Hall switch HAL1, HAL2 all adopt the unipolarity Hall switch, the induction mode of unipolarity Hall switch: a magnetic pole in magnetic field is near it, and output low-potential voltage (low level), field pole leave its output high-potential voltage (high level).

Referring to Fig. 2; When handle 2 is moved to the left; Permanent magnet 3 moves to the right, and near Hall switch HAL2, this moment, the pin 4 of Hall switch HAL2 was exported low-potential voltages (low level); This signal sets is a switch closure signals, through electric power system control circuit (like the circuit breaker electric control mechanism) closed circuit; When handle 2 moves right; Permanent magnet 3 moves to the left, near Hall switch HAL1, and Hall switch HAL2 output this moment high-potential voltage (high level); This signal sets is the switch cut-off signal, through electric power system control circuit (like the circuit breaker electric control mechanism) open-circuit line.　　

Although illustrated and described the embodiment of the utility model; For those of ordinary skill in the art; Be appreciated that under the situation of principle that does not break away from the utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, the scope of the utility model is limited accompanying claims and equivalent thereof.

Claims

1. the magnet controlled auxiliary switch that is used for isolating switch; It is characterized in that: comprise auxiliary switch protective cover and isolator operation handle; Permanent magnet is equipped with on said handle top; Hall switch is equipped with at said auxiliary switch protective cover inwall two ends respectively, and the signal output part of two said Hall switch is connected with the electric power system control circuit.

2. according to the said magnet controlled auxiliary switch that is used for isolating switch of claim 1, it is characterized in that: said auxiliary switch protective cover is an irony.

3. according to the said magnet controlled auxiliary switch that is used for isolating switch of claim 1, it is characterized in that: said Hall switch is the unipolarity Hall switch.