CN201780940U

CN201780940U - Novel structure of electromagnet of high-voltage circuit breaker

Info

Publication number: CN201780940U
Application number: CN2010202331913U
Authority: CN
Inventors: 陈佳成; 杨春风
Original assignee: Hangzhou Zhijiang Switchgear Stock Co Ltd
Current assignee: Hangzhou Zhijiang Switchgear Stock Co Ltd
Priority date: 2010-06-22
Filing date: 2010-06-22
Publication date: 2011-03-30
Anticipated expiration: 2020-06-22

Abstract

The utility model discloses a novel structure of an electromagnet of a high-voltage circuit breaker, which comprises the following parts such as an iron core, a spring, an upper magnetic yoke, a coil, a pin, a top rod, a lower magnetic yoke, a screw cap and the like, wherein a shaft sleeve is arranged on the top part of the iron core, and is formed into a whole body with the iron core through a screw rod and a screw nut. Because the shaft sleeve is adjustable, the compression quantity on the spring can be changed through rotating the shaft sleeve, and the electromagnet can meet the mechanism tripping requirement.

Description

A kind of primary cut-out electromagnet new construction

Technical field:

The utility model relates to a kind of primary cut-out electromagnet new construction, belongs to High-Voltage Electrical Appliances manufacturing technology field.

Background technology:

Primary cut-out is normally threaded off mechanism to carry out at a distance branch, closing operation by electromagnet.For making the primary cut-out reliability service, avoid outer bound pair circuit breaker work to disturb, generally in circuit breaker is used, high requirement is proposed electromagnet, as for tripping electromagnet, when adding 30%Ue (rated voltage) to electromagnet, electromagnet must not make mechanism thread off, and when adding 65%Ue to electromagnet, electromagnet must be able to make mechanism thread off; For making electromagnet, when adding 30%Ue to electromagnet, electromagnet must not make mechanism thread off, when adding 85%Ue to electromagnet, electromagnet must be able to make mechanism thread off, and when to electromagnet 65%Ue and 85%Ue mechanism being threaded off, the branch wire time of circuit breaker has strict regulation again.On the other hand, the physical dimension of mechanism's tripping force and branch, switching-in spring, transmission mechanism and the factors such as roughness of component surface thereof are relevant, these factors are for every mechanism, can not be in full accord, the tripping force that is every breaker mechanism is not quite identical, and required electromagnet active force also is not quite similar.Therefore, consider that from last two aspects electromagnet should be a scalable to the active force of mechanism's trip gear.Yet, the active force of present normally used primary cut-out electromagnet is nonadjustable, its structure is as shown in Figure 1: it is mainly by screw 1, packing ring 2, iron core 3, spring 4, upper magnet yoke 5, coil 6, pin 7, push rod 8, lower yoke 9 and nut 10 are formed, wherein, iron core 3 links together by pin 7 with push rod 8, iron core 3, push rod 8 respectively with

upper magnet yoke

5,9 sliding joining of lower yoke, upper magnet yoke 5 makes up by the screw (not shown) with lower yoke 9, push rod 8 front ends are provided with nut 10, iron core 3 rear ends are with spring 4, packing ring 2 is anchored on the iron core 3 by screw 1, coil 6 is loaded in the annular groove chamber of upper magnet yoke 5 and lower yoke 9 formation, semiaxis 11 is located at the front of whole electromagnet, and with nut 10 gap delta is arranged.During work, give coil 6 galvanizations, form magnetic field in upper magnet yoke 5, the lower yoke 9, iron core 3 moves downward under the magnetic field force effect, and push rod 8 end nuts 10 effect semiaxis 11 are threaded off mechanism; After coil 6 dead electricity, upper magnet yoke 5, lower yoke 9 internal magnetic fields disappear, and iron core 3 moves upward under spring 4 effects and resets.Under some occasion, by regulating the angle that semiaxis 11 rotates around its center,, change electromagnet core 3 and get the accelerating travel of electric back in magnetic field at coil to change the size of δ, the electromagnet practical function is changed in the power of mechanism's dropout semiaxis 11, satisfy the requirement of circuit breaker.When semiaxis 11 did not allow to regulate, this electromagnet just was difficult to satisfy every circuit breaker requirement.Therefore, traditional primary cut-out electromagnet has not only limited its scope of application, and security reliability also can not get effective assurance.

Summary of the invention:

In view of the problem of above-mentioned existence, the purpose of this utility model provide a kind of simple in structure, make easyly, the electromagnet active force is adjustable and the primary cut-out electromagnet new construction of good reliability.

A kind of primary cut-out electromagnet new construction described in the utility model, include iron core, spring, upper magnet yoke, coil, pin, push rod, lower yoke, nut, it is characterized in that top at iron core, be provided with an axle sleeve, axle sleeve is by screw rod and nut and iron core formation one, because axle sleeve is adjustable, therefore, rotary sleeve changes the decrement to spring, can make electromagnet can satisfy the requirement that mechanism threads off.

The utlity model has simple in structure, make easily, advantages such as easy to adjust, good reliability, it can effectively satisfy primary cut-out to mechanism thread off requirement.

Description of drawings

Fig. 1 is existing primary cut-out electromagnet and mechanism's semiaxis schematic diagram

Fig. 2 is a structural representation of the present utility model

Wherein: 1-screw 2-packing ring 3-4-spring unshakable in one's determination 5-upper magnet yoke 6-coil 7-pin 8-push rod 9-lower yoke 10-nut 11-semiaxis 12-screw rod 13-nut 14-axle sleeve

Embodiment:

A kind of primary cut-out electromagnet new construction described in the utility model, include iron core 3, spring 4, upper magnet yoke 5, coil 6, pin 7, push rod 8, lower yoke 9, nut 10, it is characterized in that top at iron core 3, be provided with an axle sleeve 14, axle sleeve 14 constitutes one by screw rod 12 and nut 13 with iron core 3, the relative position of axle sleeve 14 adjustable.Because axle sleeve 14 is adjustable, and the electromagnet active force mainly is made of magnetic field force and spring force.Therefore, rotary sleeve 14 changes the decrement to spring 4, can make electromagnet can satisfy the requirement that mechanism threads off.

A kind of primary cut-out electromagnet new construction described in the utility model is made simple, easy to adjust.During assembling, on the thread surface of screw rod 12, be coated with, be screwed in the screw of iron core 3, screw rod 12 and iron core 3 are tightened together with anaerobism glue.Because axle sleeve 14 usefulness screw threads are connected with screw rod 12, to the decrement employing step-less adjustment of spring 4, so can make electromagnet better adapt to the requirement that mechanism threads off.

Claims

1. primary cut-out electromagnet new construction, include iron core (3), spring (4), upper magnet yoke (5), coil (6), pin (7), push rod (8), lower yoke (9), nut (10), it is characterized in that top in iron core (3), be provided with an axle sleeve (14), axle sleeve (14) constitutes one by screw rod (12) and nut (13) with iron core (3).

2. a kind of primary cut-out electromagnet new construction according to claim 1 is characterized in that relative position adjustable of described axle sleeve (14).