CN201048116Y

CN201048116Y - Permanent-magnet relay

Info

Publication number: CN201048116Y
Application number: CNU2007201528994U
Authority: CN
Inventors: 李乾伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-16
Filing date: 2007-06-16
Publication date: 2008-04-16
Anticipated expiration: 2017-06-16

Abstract

The utility model relates to a permanent-magnetic breaker. A feed terminal (1) is connected with a fixed contact (10), and an arc extinguishing chamber (11) is provided with the fixed contact (10) and a moving contact (12). A primary line (20) is connected with the moving contact (12) and a discharging terminal (9). A moving contact support is connected with a moving iron sheet (14) of a permanent-magnetic mechanism through a connecting rod (13). The permanent-magnetic mechanism and the moving contact support are fixed on a positioning rack. The permanent-magnetic mechanism, a current transformator (21), a zero sequence current transformator (22), an external interface (8), etc. which are controlled automatically by a microcomputer are connected with a breadboard (18). The permanent-magnetic mechanism is applied to the places of the online protective control, the automatic detecting electric failure disconnection, the distance remote control operation and the autoreclose circuit breaker in the power distribution network. The utility model has the advantages that the process of the parts of the permanent-magnetic mechanism is fast, the installation is convenient, the raw material and the process costs are low, the functions of the current detecting and the zero-sequence current detecting are obtained, the disjunction capacity is strong, the degree of automation is high, the permanent-magnetic breaker can be used in the places operating frequently, etc.

Description

The permanent magnetism breaker

Technical field

The utility model relates to a kind of breaker that is driven divide-shut brake by permanent magnet mechanism.

Background technology

CN200710091273.1 is that the applicant is in first to file " permanent-magnetic driven low-voltage air switch of band manual brake separating " patent, be to drive with manual and permanent magnet mechanism to divide, close a floodgate, and as required separating brake and combined floodgate are in the permanent magnetism hold mode, deciliter ability is strong, can use in the occasion of frequent movement, but this technology is not provided with current detecting and zero-sequence current checkout gear, can't carry out actual detected and signal transmission to the associated electrical force parameter, and its permanent magnet mechanism, moving iron core are cylinder, cylinder, magnet ringwise, the car system of need forms raw material and processing cost height.

Summary of the invention

The purpose of this utility model is at the above-mentioned deficiency of formerly applying for a patent technology, a kind of current detecting and zero-sequence current checkout gear of being provided with is provided, can carry out that actual detected and signal transmit to the associated electrical force parameter, and the cost of material of permanent magnet mechanism and the low permanent magnetism breaker of processing cost.

The purpose of this utility model can realize by following measure: this permanent magnetism breaker, include shell, input terminal, outlet terminal, arc eliminating chamber, input terminal links to each other with fixed contact, the primary line of main circuit connects moving contact and outlet terminal, moving contact links to each other with the moving iron plate of permanent magnet mechanism by connecting rod, permanent magnet mechanism and moving contact rack are fixed on the locating rack, the wiring chieftain connection circuit plate of permanent magnet mechanism, shell is faced display window on the face, indicator light, button, external tapping, be installed with phase line on the current transformer, be installed with phase line and zero line on the zero sequence current mutual inductor, permanent magnet mechanism is by yoke, the coil of these both sides, yoke stage casing and the permanent magnet of opening part, moving iron plate is formed.

The purpose of this utility model can also be come perfect by following measure: the moving iron plate of permanent magnet mechanism has two, is divided into the inside and outside and permanent magnet both sides of yoke opening part.Between moving contact and the connecting rod extension spring is arranged.Display window has divide-shut brake display window and digital display window.

The beneficial effects of the utility model are raw materials of permanent magnet mechanism and processing cost is low, installation and processing is fast, the work efficiency height, the breaking capacity of switch is strong, can in the occasion of frequent movement, use, have current detecting, zero-sequence current measuring ability, interfaces such as communication, far distance controlled are arranged, and function is many, automaticity is high.

Description of drawings

Fig. 1 is the utility model profile front view.

Fig. 2 is the H-H cut-away view of Fig. 1.

Fig. 3 is the J-J cutaway view of Fig. 1.

Embodiment

The utility model is described in further detail below in conjunction with embodiment and with reference to accompanying drawing: with reference to Fig. 1, the opening and closing state that divide-shut brake display window 4 and interior display panel 3 thereof show at that time, digital display window 5 shows each relevant parameters of electric power, external tapping 8 includes interfaces such as communication, remote control, to increase function and to improve automaticity.Button 7 is used for manual operation, can drive divide-shut brake with hand divide-shut brake and permanent magnet mechanism.Consult Fig. 2,3, with the combined floodgate is that example illustrates (figure is a separating brake), during combined floodgate, operating current to primary line 18, arrives outlet terminal 9 through input terminal 1, fixed contact 10, moving contact 12 again, at this moment the closing coil 17 in the permanent magnet mechanism passes through switching current, produce induced field,, make the connecting rod 13 that is connected with moving iron plate 14 promote moving contact 12 and close a floodgate the strength of moving iron plate 14 oriented extrapolations, promptly close a floodgate and be in permanent magnetism hold mode, closing coil current vanishes.When switching winding 17 when dividing brake current, moving iron plate 14 is inwardly swung, and by connecting rod 13, moving contact 12 is pulled away from fixed contact 10, has realized separating brake (shown in Fig. 2,3).Also available knob mode is assisted and is finished the divide-shut brake action.Permanent magnet 15 provides magnetic energy, makes the usefulness of opening and closing state maintenance, and coil need not powered.Be pulled away from moving contact 4 when extension spring 19 helps separating brake fast, reduce the generation of electric arc.Locating rack is with stationary positioned such as permanent magnet mechanism, moving contact rack, connecting rod 13, extension springs 19, permanent magnet mechanism, current transformer 21, zero sequence current mutual inductor 22, external tapping 8, indication mechanism, button 7 etc. link to each other with circuit board 18, carry out automation control by microcomputer, control circuit is according to the difference of this permanent magnetism breaker application places, set relevant parameter, carry out the specific aim design.This belongs to protecting computer software and IC layout design protection, does not carefully state for this reason.

This permanent magnetism breaker can be single-phase, three-phase, three-phase and four-line; corresponding setting up into and out of line produced son and circuit get final product, can be widely applied to the place that online protection in the distribution system was controlled, detected automatically electric fault disconnection and long-distance remote control deciliter and automatic reclosing and acts frequently.

Claims

1. permanent magnetism breaker, include shell (2), input terminal (1), outlet terminal (9), arc control device (11), input terminal links to each other with fixed contact (10), the primary line of main circuit (20) connects moving contact (12) and outlet terminal (9), moving contact (12) links to each other with the moving iron plate (14) of permanent magnet mechanism by connecting rod (13), permanent magnet mechanism and moving contact rack are fixed on the locating rack, the wiring chieftain connection circuit plate (18) of permanent magnet mechanism, it is characterized in that shell (2) faces display window (4 is arranged on the face, 5), indicator light (6), button (7), external tapping (8), current transformer is installed with phase line on (21), zero sequence current mutual inductor is installed with phase line and zero line on (22), and permanent magnet mechanism is by yoke (16), the coil (17) of these both sides, yoke stage casing and the permanent magnet (15) of opening part, moving iron plate (14) is formed.

2. permanent magnetism breaker as claimed in claim 1 is characterized in that the moving iron plate (14) of permanent magnet mechanism has two, is divided into inside and outside and permanent magnet (15) both sides of yoke (16) opening part.

3. permanent magnetism breaker as claimed in claim 1 is characterized in that between moving contact (12) and the connecting rod (13) extension spring (19) being arranged.

4. permanent magnetism breaker as claimed in claim 1 is characterized in that said display window is divide-shut brake display window (4) and digital display window (5).