CN2383204Y

CN2383204Y - Arc suppressing room for contactor

Info

Publication number: CN2383204Y
Application number: CN 99242135
Authority: CN
Inventors: 林李杰; 林李忠; 林李东
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-22
Filing date: 1999-08-22
Publication date: 2000-06-14
Anticipated expiration: 2009-08-22

Abstract

The utility model relates to an arc chute for a contactor, comprising an upper and a lower arc extinguishing covers (1b) which are symmetrical, an arc chute (4), and arc chute pieces (3a, 3b). The arc chute pieces (3a, 3b) are serrate, and have different lengths. The arc chute pieces (3a, 3b) are alternately inserted into the narrow slits of the arc extinguishing covers (1b). The serrate arc chute pieces (3a, 3b) with different lengths have little resistance, are favorable for the segmentation and the lengthening of the electrical arc, and can rapidly move into the narrow slits for cooling and deionization, thus achieving the purpose of fast arc extinguishing.

Description

The contactor arc control device

The utility model belongs to the extinguish arcs device technique field between contactor series products current-carrying part.

Arc-control device and arc-extinguish chamber have been introduced in " common low-tension device and application thereof " (open hat Centime bright road and compile China Machine Press, 1982).Arc-extinguish chamber is made with are-tight potter's clay, asbestos cement or arc resistant plastic usually.Its effect has two, one, and pilot arc vertically blows out, and prevents phase fault whereby; The 2nd, electric arc is contacted with the insulation wall of arc control device, thereby cooling rapidly strengthen and remove (disappearing) liberation, improves arc stream and falls, and forces arc extinction.Wang Xuejun, Chen Degui etc. " research of many longitudinal joints of low capacity contactor and metal grating arc-extinguishing chamber arc extinction performance " (" low-voltage electrical apparatus ", 1996) show, arc extinction performance depends on the structure of arc control device, and is promptly relevant with the structural elements such as shape of the shape of arc-extinguish chamber and material, grid sheet.The good arc control device of arc extinction performance can effectively be protected contact system, reduce its wearing and tearing, improve its breaking capacity, thereby guarantee the safe and reliable of whole electrical equipment.

" the big capacity plastics of narrow slit type arc-extinguish chamber " (ZL89212400 stops) is characterized in that flash barrier has polylith and parallel to each other, and mutually the strip gap length arranged; It is applicable on the electric car device for switching of city or on the automatically controlled contactor of underground railway electric motor coach." automatically controlled contactor blade inserting plastics arc-extinguish chamber " (ZL89211750 stops) is applicable to the automatically controlled contactor of TCK7.

Task of the present utility model is to provide a kind of contactor arc control device, its mechanical strength height, compact conformation, good insulation preformance, arc extinction performance height.

For finishing above-mentioned task, the solution that the utility model is taked is: a kind of contactor arc control device, the upper and lower arc-extinguish chamber, arc-chute and the arc extinguishing grid pieces that comprise symmetry, arc extinguishing grid pieces are zigzag, the long and short two kind are arranged that short arc extinguishing grid pieces and long arc extinguishing grid pieces alternately insert in the narrow slit of arc-extinguish chamber.

Described length arc extinguishing grid pieces length differs 1.5cm ± 0.1cm.

Described arc-extinguish chamber is made with the DMC moulding compound.

Arc-extinguish chamber is many longitudinal joints arc-extinguish chamber made from the DMC moulding compound in the utility model, and its mechanical strength height falls than potter's clay arc-extinguish chamber is anti-, and the air-flow that can produce under arcing cooled off electric arc, has strengthened the arc extinguishing ability, good insulation preformance.Jagged arc extinguishing grid pieces is the iron railings sheet; and length difference; electric arc is at first contacting with the crown of immediate grid sheet in grid sheet motion process like this; grid sheet resistance than other shape is little, and electric arc is cut apart easily and elongated, and contacts with short grid sheet again; the easy rising of arc voltage moves forward and enters in the slit; be subjected to the plastics arc-extinguish chamber cooling, disappear freely, reached the purpose of quick arc extinguishing, protected the contact system of contactor effectively.And arc-chute (arc-chute is a ferromagnetic plate) has been arranged, has strengthened magnetic field, made electric arc under the electromagnetic force effect, more effectively to overcome the resistance that is subjected to and enter in the slit, be subjected to plastic jacket cooling, disappear freely, further strengthen the arc extinguishing ability.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Fig. 1 is the front view of present embodiment.

Fig. 2 is the front view after present embodiment removes clip (2) and last arc-extinguish chamber (1a).

Fig. 3 is the shape figure of long arc extinguishing grid pieces (3a) among Fig. 2.

Fig. 4 is the shape figure of the short-and-medium lonely grid sheet (3b) that goes out of Fig. 2.

Fig. 5 is the left view of present embodiment.

The following realization of present embodiment:

As shown in Figure 2, alternately inserting short arc extinguishing grid pieces (3b) and long arc extinguishing grid pieces (3a) in the laterally zygomorphic narrow slit of arc-extinguish chamber (1b) down, be embedded in arc-chute (4) at right wall groove, cover being much of arc-extinguish chamber (1a), wale result such as Fig. 1 and shown in Figure 5 with two clips (2).

As shown in Figure 3 and Figure 4, (3a 3b) is zigzag to arc extinguishing grid pieces, divides the long and short two kind, and their length differs 1.5cm ± 0.1cm.

(1a 1b) makes with the DMC moulding compound arc-extinguish chamber.

As shown in Figure 2, in order to make the bigger arc extinguishing effect of arc extinguishing canopy (4) performance, arc-chute (4) has the Gu Jiao of drawing left on four jiaos, on flanging and four jiaos the arcing angle is arranged to the right.

Claims

1, a kind of contactor arc control device, upper and lower arc-extinguish chamber (the 1a that comprises symmetry, 1b), (3a 3b), is characterized in that arc extinguishing grid pieces (3a for arc-chute (4) and arc extinguishing grid pieces, 3b) be zigzag, the long and short two kind is arranged, and short arc extinguishing grid pieces (3b) and long arc extinguishing grid pieces (3a) alternately insert arc-extinguish chamber (1a are in narrow slit 1b).

2, contactor arc control device according to claim 1, (3a, 3b) length differs 1.5cm ± 0.1cm to it is characterized in that the length arc extinguishing grid pieces.

3, contactor arc control device according to claim 1 is characterized in that (1a 1b) makes with the DMC moulding compound arc-extinguish chamber.

4, contactor arc control device according to claim 1 is characterized in that arc-chute (4) has arc leading angle left on four jiaos, on flanging and four jiaos the arcing angle arranged to the right.