CN2553504Y

CN2553504Y - High speed ac contactor

Info

Publication number: CN2553504Y
Application number: CN 02223737
Authority: CN
Inventors: 周腾芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-02
Filing date: 2002-04-02
Publication date: 2003-05-28
Anticipated expiration: 2012-04-02

Abstract

The utility model relates to a high speed AC contactor applicable for the use in plain and plateau areas belonging to the common AC contactor with contact, which is characterized in that: the crossed angle for the electromagnetic system pole surface and the levelly vertical surface is 15 to 50 degrees. By adopting the structure above, the communication and breaking speed of the utility model is improved by more than one time compared with the same product at home and abroad, and the contact bounce time when in communication is shortened by more 80 percent. The high speed communication and breaking drive energy effectively overcomes the bad influence to the contactor action by different poor environment and plateau environment, which makes the elevation height in applicable are improved to less than 5000m from less than 2000m.

Description

The high speed A.C. contactor

Affiliated technical field

The utility model belongs to plain edition A.C. contactor field, contact, for the usefulness of remote make-and-break contact and Fraquent start and control alternating current motor.The high speed A.C. contactor that is particularly useful for the abominable and highlands of environment.

Background technology

At present, well-known A.C. contactor is made up of contact arc-extinguishing system, electromagnetic system and base.Electromagnetic system is to handle contact to connect and disjunction, realize the heart component of control automatically, because the clapper-type structure that its electromagnetic system iron core pole-face is a level, slow to contactor is connected with breaking speed, have that contact melting welding, sucking coil power consumption are big, poor reliability, electric life are low, temperature rise, defective such as noise is arranged.

The patent No. that I applied on August 22nd, 1986 is 86105437.7 patent of invention twisting direct-acting alternating magnetic system, though eliminated above-mentioned defective substantially, but, and limited to increasing substantially of contactor connection and breaking speed because magnetic system pole-face and horizontal vertical interfacial angle scope are too little.

Summary of the invention

Existing A.C. contactor is connected and breaking speed is not high in order to overcome, and has limited to the height above sea level of using the region, and the utility model provides a kind of high speed A.C. contactor.This contactor not only is applicable to various adverse circumstances, and makes the height above sea level under the normal running conditions improve 3000m.

The technical scheme that its technical problem that solves the utility model adopts is: with electromagnetic system iron core and armature pole-face, be designed to and horizontal vertical interfacial angle unidirectional parallel inclined-plane between 15～50 ° by the horizontal pole-face of traditional clapper-type.In the above-mentioned angle of cut scope of the patent of invention twisting direct-acting alternating magnetic system of application on August 22nd, 1986 an amount of expansion is arranged than me.Make the pull characteristics of electromagnetic system and the fine coupling of spring load characteristic of contactor.Because the expansion of above angular range has increased the static suction of electromagnetic system exponentially, has realized that the high speed of contactor is connected; Because armature and contactor moving contact rack gravity can be used for the release of magnetic system, add factors such as remanent magnetism minimizing and realized the high speed disjunction of contactor, shorten the arcing time effectively, reduced the probe of contactor electrical wear, and improved electric life and reliable in action; Because the tiltedly magnetic damping that produces during the pole-face adhesive, reduce vibration and eliminated spring of probe of contactor secondary and melting welding; Owing to the arcing time shortening has reduced contact temperature rise; Shorten working gas gap owing to magnetic pole is staggered and reduced the sucking coil power consumption, reduced the magnetic flux density and the remanent magnetism of iron core; Owing to being that the bidirectional force sticking has been eliminated the contactor noise after the oblique pole-face adhesive.

Be 40～60ms the turn-on time of existing similar products at home and abroad, and be 15～25ms turn-on time of the present utility model; The break-time of similar products at home and abroad is 30～45ms, and break-time of the present utility model is 10～20ms; The contact time of vibration of similar products at home and abroad when connecting is 20～50ms, and the contact time of vibration of the utility model when connecting all is less than 5ms, so name high speed A.C. contactor.Because the kinetic energy that speed is brought has overcome the harmful effect of altitude environment to the contactor action, below the 2000m of existing similar products at home and abroad, bring up to below the 5000m and be suitable for height above sea level.

It uses mounting means, divides vertical installation and level to install two kinds, and the best is vertical the installation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the electromagnetic system structure schematic diagram of utility model.

Fig. 2 is figure turn-on time of high speed A.C. contactor.

Fig. 3 is the break-time figure of high speed A.C. contactor.

Embodiment:

The contactor external form is represented in double dot dash line among Fig. 1, and (1) is the static iron core of contactor band sucking coil (6), and (2) are armature, and (3) are the contactor moving contact rack, and G is armature and contact supporting gravity.Dotted line is the horizontal vertical face, and (4) and (5) are the iron core pole-face, and (4 ') and (5 ') are the armature pole-face.A is pole-face and horizontal vertical interfacial angle.Because the magnetic line of force has vertical characteristic by working gas gap, polar area increases, and the principle that air gap and electromagnetic attraction F2 are inversely proportional to makes static suction increase nearly 2 times, attract armature (2) to move horizontally and make contactor to connect left, reached the requirement of connection at a high speed; Draw back up and down the remanent magnetism that two pairs of pole-faces and coil number of ampere turns reduce to bring and reduce owing to gravity G can be directly used in, after sucking coil (6) outage, armature (2) level to the right moves rapidly, makes the contactor disjunction, and has reached the requirement of high speed disjunction.

Ordinate s represents the probe of contactor stroke among Fig. 2, abscissa t express time.t ₁The expression motion delay, t ₂The expression closing time, t ₃Expression is closed to postpone t ₄The expression time of vibration, t ₅Be total closed (connection) time.Since being multiplied of static suction, and make t ₃Shorten greatly,, make t because the magnetic damping effect of closed moment reduces the magnetic pole strength collision ₄Reduce more than 80%, and the realization contactor is connected at a high speed.

Ordinate s represents the probe of contactor stroke among Fig. 3, abscissa t express time.t ₁The expression motion delay, t ₂The expression arcing time, t ₃Represent total break-time.Discharge because armature and moving contact rack gravity can be directly used in magnetic system, the remanent magnetism minimizing that factors such as magnetic pole strength increase form causes magnetic system to discharge at a high speed, makes t ₁And t ₂Shorten greatly and realize the disjunction of contactor high speed.

Claims

1, a kind of high speed A.C. contactor, its electromagnetic system are sucking coil and fold the composition of iron core up and down of riveting with silicon steel sheet.It is characterized in that: going up the lower core pole-face is unidirectional parallel inclined-plane.

2, contactor according to claim 1 is characterized in that: electromagnetic system iron core pole-face and horizontal vertical interfacial angle are 15 °～50 °.