CN201877378U

CN201877378U - Instantaneous surpassing tripping device

Info

Publication number: CN201877378U
Application number: CN2010206382670U
Authority: CN
Inventors: 余存泰; 夏初阳
Original assignee: Delixi Electric (Ningbo) Co Ltd
Current assignee: Delixi Electric Co Ltd
Priority date: 2010-11-24
Filing date: 2010-11-24
Publication date: 2011-06-22
Anticipated expiration: 2020-11-24

Abstract

The utility model discloses an instantaneous surpassing tripping device, which comprises a bracket, a static iron core, a conductor and an armature, wherein the static iron core is positioned on the outer side of the bracket; and one part of the conductor and one part of the armature are positioned in the bracket. The instantaneous surpassing tripping device is characterized in that one part of the conductor is positioned in the bracket; one side of the part of the conductor is opposite to the armature; the other side of the part of the conductor is opposite to the static iron core over the bracket; and the other part of the conductor is positioned on the outer side of the bracket, obliquely extends and penetrates through a current transformer. One part of the conductor of the instantaneous surpassing tripping device is positioned in the bracket and corresponds to the armature; the other part of the conductor is positioned outside the bracket and obliquely penetrates through the current transformer; and according to the actual volume of a circuit breaker, the length of a magnetic path of the current transformer can be controlled more reasonably, the magnetic characteristic of the current transformer can be improved, the high measurement precision of the current transformer can be realized and the reliability and the stability of products can be improved.

Description

The instantaneous release that surmounts

Technical field

The utility model relates to a kind of instantaneous release that surmounts of circuit breaker.

Background technology

When the intelligent plastic housing circuit breaker runs into especially big short circuit current, make the instantaneous disjunction of circuit breaker by the instantaneous release that surmounts, play the effect of protection circuit and equipment, reduced the scaling loss of contact of breaker simultaneously, improved the short circuit breaking capacity of circuit breaker.The intelligent plastic housing circuit breaker of little electric current shell frame grade is because the restriction of internal volume often can't be equipped with the instantaneous release that surmounts.The intelligent plastic housing circuit breaker is handled current signal need be through over-sampling, calculating, comparison, determine actuator's need of work spends the long time, if be not equipped with the instantaneous raising that release has limited the short circuit breaking capacity of circuit breaker to a certain extent that surmounts.The instantaneous release that surmounts that the intelligent plastic housing circuit breaker of at present big electric current shell frame grade uses comprises fixed core, armature, support, reaction spring, electric-conductor, thermal element and rivet composition.Wherein conductor is welded by electric-conductor and thermal element, because the existence of thermal element has increased the temperature rise of intelligent controller, the reliability of intelligent controller is reduced; Simultaneously in order to meet the specified short time withstand current test requirement of GB14048.2-2008 standard code, not adhesive when adopt increasing the instantaneous attract current value that surmounts release of the pulling force control of reaction spring≤specified short time withstand current value Icw, impulsive force when causing armature, fixed core adhesive is excessive, make armature, reaction spring produce distortion, the instantaneous release setting value that surmounts diminishes, can not the conformance with standard requirement, greatly reduce reliability of products and stability

Summary of the invention

Technical problem to be solved in the utility model is that a kind of certainty of measurement height, product reliability and the high instantaneous release that surmounts of stability are provided at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of instantaneous release that surmounts, comprise support, static iron core, conductor and armature, described static iron core is positioned at the described support outside, the part of described conductor and armature is positioned at described support, it is characterized in that: the part of described conductor is positioned at that a side of described support and this segment conductor is relative with armature, opposite side is relative across support and static iron core, and another part of described conductor is positioned at the described support outside and the oblique current transformer that extends through.It is corresponding with armature that this instantaneous conductor part that surmounts release is positioned at support, another part is positioned at the outer oblique current transformer that passes of support can be according to the actual volume of circuit breaker, more reasonably the magnetic circuit of Control current instrument transformer is long, the magnetic characteristic that improves current transformer realizes its high measurement accuracy, has improved reliability of products and stability.

Preferably, described conductor comprise level be positioned at first localization part of described frame bottom, vertical with described first localization part and be positioned at described support first sensing part, with the described first sensing part vertical-horizontal be positioned at described static iron core top and with static iron core be provided with at interval dodge part, from described oblique second sensing part of extending down of part and second localization part that is positioned at the described second sensing part bottom level of dodging, it is outer and pass current transformer that described second sensing part is positioned at described support.

In order to adjust the suction between armature and the static iron core, described static iron core is the described support of a U sections core semi-surrounding, and its top has the extension convex surface of dodging part towards described.

Compared with prior art, advantage of the present utility model is: make the oblique current transformer that passes of conductor, not only increased the volume of current transformer but also reduced the magnetic circuit of current transformer long, improved the magnetic characteristic of current transformer and then improved the precision of measuring, the gradient of second sensing part of this conductor can be adjusted arbitrarily; And increasing the extension convex surface on the static iron core and between the conductor, can be so that the suction between adjustment static iron core and the armature, the reset force that need not increase back-moving spring just can be regulated the suction-combining force of armature and static iron core, make back-moving spring and armature indeformable, guaranteed the stability and the reliability of product.

Description of drawings

Fig. 1 is the instantaneous structural representation that surmounts release and coil of the utility model embodiment.

Fig. 2 is the instantaneous structural representation that surmounts release of the utility model embodiment.

Fig. 3 is the instantaneous cutaway view that surmounts release of the utility model embodiment.

Fig. 4 is the instantaneous structural representation that surmounts static iron core in the release of the utility model embodiment.

Fig. 5 is the instantaneous structural representation that surmounts conductor in the release of the utility model embodiment.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

The instantaneous release that surmounts of the present utility model, shown in Fig. 1-5, comprise support 1, be positioned at the armature 4 of support 1, be fixed with back-moving spring 5 between the top of described armature 4 and the support 1, and described armature 4 can be positioned at the static iron core 2 in described support 1 outside around the pivot on the support 1 11 rotation, and a part in support 1, between static iron core 2 and the armature 4, another part is positioned at the conductor 3 in support 1 outside.Be provided with the part of conductor 3 and the part of support 1 between described armature 4 and the static iron core 2 successively.Described armature 4 can be fulcrum with pivot 11, under the interaction of the reset force of magnetic field suction and back-moving spring 5 near or produce the dropout effects away from described conductor 3 and static iron core 2.

Described conductor 3 comprises first localization part 31 that flatly is positioned at described support 1 and armature 4 bottoms, vertical with described first localization part 31 and be positioned at that described support 1, a side and armature are 4 relative, opposite side and static iron core 2 be across the first relative sensing part 32 of support 1, link to each other with described first sensing part 32 from what static iron core 2 was crossed and dodge part 33, from described part 33 oblique second sensing parts 34 of extending down of dodging, and link to each other with described second sensing part 34, extend to second localization part 35 of bottom.One side of described first sensing part 32 is corresponding with armature 4, and the opposite side of this first sensing part 31 is across support 1 and static iron core 2 corresponding settings, described second sensing part 34 is an inclined-plane, and current transformer 6 is placed in the outside of described second sensing part 34, the gradient of second sensing part 34 of this oblique setting can be adjusted, by adjusting this gradient, the magnetic circuit length of this current transformer 6 is reduced, improve the magnetic characteristic of current transformer and then improve its certainty of measurement.

Dodge between part 33 and the static iron core 2 described, vacate certain distance, and static iron core is arranged to as described in Figure 4 U type, its described support 1 of U type structure semi-surrounding and conductor 3, convex surface 21 can be arranged to extend facing to dodging part 33 in the top of this static iron core 2.Therefore the elastic force that does not need specially to increase back-moving spring 5 is controlled the suction between armature 4 and the static iron core 2, only need be according to the instantaneous size that surmounts the release electric current, increase or the area of the extension convex surface 21 of minimizing static iron core 2 is adjusted.Impulsive force when adjustment not only can reduce armature, static iron core adhesive like this makes back-moving spring 5 and armature 4 not yielding, and can guarantee effectively that the instantaneous whole system that surmounts release is more reliable and more stable.

In addition to the implementation, the utility model also includes other execution modes, and the technical scheme that all employing equivalents or equivalent substitute mode form all should fall within the protection range of the utility model claim.

Claims

1. instantaneous release that surmounts, comprise support (1), static iron core (2), conductor (3) and armature (4), described static iron core (2) is positioned at described support (1) outside, the part of described conductor (3) and armature (4) is positioned at described support (1), it is characterized in that: it is relative with armature (4) that the part of described conductor (3) is positioned at a side of described support (1) and this segment conductor (3), opposite side is relative with static iron core (2) across support (1), and another part of described conductor (3) is positioned at described support (1) outside and the oblique current transformer (6) that extends through.

2. the instantaneous release that surmounts as claimed in claim 1, it is characterized in that: described conductor (3) comprises that level is positioned at first localization part (31) of described support (1) bottom, vertical with described first localization part (31) and be positioned at first sensing part (32) of described support (1), be positioned at described static iron core (2) top and dodge part (33) with described first sensing part (32) vertical-horizontal with static iron core (2) is provided with at interval, from described oblique second sensing part (34) of extending down of part (33) and second localization part (35) that is positioned at described second sensing part (34) bottom level of dodging, described second sensing part (34) is positioned at outside the described support (1) and passes current transformer (6).

3. the instantaneous release that surmounts as claimed in claim 2 is characterized in that: described static iron core (2) is a described support of U sections core semi-surrounding (1), and its top has the extension convex surface (21) of dodging part (33) towards described.