CN104283115A - Three-phase contact case for high-voltage switch cabinet - Google Patents

Abstract

The invention provides a three-phase contact case for a high-voltage switch cabinet. The three-phase contact case comprises an A phase case body, a B phase case body and a C phase case body, the side walls of the case bodies are each provided with an outgoing line groove, wherein the outgoing line grooves extend in the same direction. A busbar is arranged in each of the three outgoing line grooves. The portions, inside groove openings of the outgoing line grooves, of the busbars are connecting plate bodies. The portions, outside the groove openings of the outgoing line grooves, of the busbars are outgoing line plate bodies. The connecting plate bodies are arranged horizontally, and the free ends of the connecting plate bodies are connected to a static contact installation insert. The three-phase contact case is characterized in that the outgoing line plate bodies and the connecting plate bodies are overall-die-casting formation parts perpendicular to one another. Compared with the prior art, the structure that the outgoing line plate bodies are perpendicular to the connecting plate bodies is adopted, in this way, the three busbars are parallel in the thickness direction instead of the horizontal direction originally, and therefore the air clear distance between the busbars is increased without changing the center distances of the outgoing line grooves of the three-phase contact case.

Description

A kind of high-tension switch cabinet three-phase contact box

Technical field

The present invention relates to a kind of three-phase contact box being adapted at high-tension switch cabinet bus-bar room and using.

Background technology

Along with the fast development of electric utility, Guo Wang company also becomes more and more higher to the designing requirement of switch cubicle, one of them wants the air distance between conductor must meet >=240mm, and this just means, and the class centre-to-centre spacing run at present is 300mm, the three-phase contact box of busbar width G reatT.GreaT.GT 60mm can not continue to use.For this reason, there is a kind of three-phase contact box in known field, it comprises A, B, C three-phase contact box body be arranged side by side, but the line outlet groove of A, C two-phase bus stretches out respectively to outside is oblique, increase the air distance between busbar with this, the contact box that centre-to-centre spacing is 300mm, busbar width is > 60mm is continued to employ.But the negative effect that this improvement brings is: 1, the line outlet groove of two contact boxs stretches out respectively to outside is oblique, and have impact on versatility, range of application receives very big restriction; Although 2 increase line outlet groove centre-to-centre spacing, because contact box needs to be arranged on high voltage board bus bar indoor, inclined outlet wire groove reduces the distance to the ground with cabinet wall, thus has bred new unsafe factor.

Summary of the invention

For overcoming above-mentioned technical problem, the present invention aims to provide a kind of high-tension switch cabinet three-phase contact box, and this box is not changing existing three line outlet groove centre-to-centre spacing, and when busbar width, have and can increase busbar spaced apart, busbar can not be made again to reduce the advantage with cabinet wall distance to the ground.

Realize above-mentioned purpose technical scheme as follows:

A kind of high-tension switch cabinet three-phase contact box, comprise A, B, C three-phase box body be set up in parallel, the sidewall of every phase box body extends a line outlet groove in the same way, a slice busbar is respectively provided with in these three line outlet grooves, the part of these busbars within line outlet groove notch is brace body, and the part beyond this line outlet groove notch is outlet sheet body; Described brace is as horizontal positioned, and its free-end is connected to fixed contact and installs on inserts, it is characterized in that: described outlet sheet body and described brace are as orthogonal integral die-cast molded part.

Further, described brace has one downward be folded to position in being near outlet sheet.

Further again, in the mutual vicinal periphery of described brace body and outlet sheet body, there is epoxy resin cover layer.

Beneficial effect: the present invention compared with prior art, after making outlet sheet body into the structure perpendicular with brace body, make three busbars by original level to parallel, become thickness to parallel, thus when not changing the syndeton of three-phase contact box three line outlet groove centre-to-centre spacing and busbar brace body and inserts, the alternate air clearance increasing busbar from, ensure that switch cubicle phase spacing 300mm, the project organization of busbar width G reatT.GreaT.GT 60mm all to meet between conductor air clearance from the requirement being greater than 240.

Below in conjunction with accompanying drawing, by embodiment, the invention will be described further.

Accompanying drawing explanation

Fig. 1 is longitudinal sectional structure schematic diagram of one embodiment of the invention.

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.Busbar structure is depicted in this figure.

Fig. 3 is the plan structure schematic diagram of busbar in Fig. 2.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the vertical view of Fig. 3.

Fig. 6 is the plan structure schematic diagram of the second busbar.

Fig. 7 is the left view of Fig. 6.

Fig. 8 is the vertical view of Fig. 6.

Fig. 9 is the plan structure schematic diagram of the third busbar.

Figure 10 is the left view of Fig. 9.

Figure 11 is the vertical view of Fig. 9.

Figure 12 is the plan structure schematic diagram of the 4th kind of busbar.

Figure 13 is the left view of Figure 12.

Figure 14 is the vertical view of Figure 12.

Figure 15 is the mounting structure key diagram of the first busbar.

Figure 16 is the mounting structure key diagram of the third busbar.

Figure 17 is the mounting structure key diagram of the second or the 4th kind of busbar.

In figure: box body 1, supporting bracket 2, line outlet groove notch 3, inserts 4, insulating barrier 5, busbar 6, brace to 61, outlet sheet body 62, fixing hole 63, bending part 64, epoxy resin cover layer 65, busbar 7, busbar 8.

Embodiment

See Fig. 1, Fig. 2.The structure of this three-phase contact box is identical with original common structure, by A, B, C three-phase box body 1 be set up in parallel, and the parts such as supporting bracket 2, line outlet groove notch 3, inserts 4, insulating barrier 5 and busbar 6 are formed, line outlet groove is extended in the same way by the sidewall of every phase box body 1 and forms, and respectively arranges a slice busbar in each line outlet groove.For convenience of description, the structure of three busbars 6,7,8 is divided into two parts by artificially, that is: after installation, with the position of line outlet groove notch 3 for boundary, the part be positioned at inside this line outlet groove notch 3 is called brace body 61(composition graphs 3), part outside line outlet groove notch 3 is called that outlet sheet body 62, two sheets have fixing hole 63 with it, and the inner side free-end of brace body 61 is connected in fixed contact through fixing hole and installs on inserts 4.

Innovative point of the present invention is: the outlet sheet body 62 of busbar is orthogonal integral die-cast molded part with brace body 61, under they inscribe before not changing line outlet groove structure, can increase spaced apart.Because the structure of three busbars 6,7,8 is identical in Fig. 2, be only described for busbar 6 below, comprise some change structures of busbar 6.

See Fig. 3, Fig. 4 and Fig. 5, and in conjunction with Figure 15 and Figure 16.This is a kind of plain edition busbar (calling in the following text: the first busbar), and brace body 61 is the structure that the present three-phase contact box fixed contact of coupling installs inserts 4, still for level is to being placed in line outlet groove during installation.Composition graphs 2, for increasing the spaced apart of A, B two-phase busbar 6,7, their the equal 90-degree rotation of outlet sheet body 62, with brace body 61 in vertical configuration, forms thickness to be arrangeding in parallel.Figure 15 and Figure 16 depicts the outlet sheet body 62 of different length respectively, outlet sheet body 62 in Figure 15 is shorter, its wiring fixed hole position is within insulating barrier 5, patching operations comparatively bothers, but be conducive to strengthening contact box into and out of the alternate air distance of line busbar and air distance over the ground, guarantee that the alternate air distance of busbar and air distance over the ground meet standard-required.Outlet sheet body 62 in Figure 16 is longer, has corresponding pluses and minuses, selective.Busbar (calling in the following text: the third busbar) shown in Fig. 9-Figure 11, it is the distortion of the first busbar, and both differences only have epoxy resin cover layer 65, with reinforced insulation performance and more protection in the mutual vicinal periphery of brace body 61 and outlet sheet body 62.

See Fig. 6, Fig. 7 and Fig. 8, and in conjunction with Figure 17.Fig. 6, Fig. 7 and Fig. 8 are depicted as the second busbar structure, for guaranteeing the air distance of busbar (and between supporting bracket 2) over the ground, the outer end of brace body 61 is formed a bending part 64, form vertical outlet sheet body 62 again, then be conducive to increasing the air distance on the upside of outlet sheet body 62 and between supporting bracket 2, the air distance change brought with the rotation made up because of outlet sheet body 62.Figure 12, Figure 13 and Figure 14 are depicted as the 4th kind of busbar structure, and it is the distressed structure of the second busbar, and both differences only have epoxy resin cover layer 65, with reinforced insulation performance and more protection in the mutual vicinal periphery of brace body 61 and outlet sheet body 62.Figure 17 mainly represents that the second and the 4th kind of busbar are arranged on the situation in contact box, due to the existence of bending part 64, really increases the air distance between outlet sheet body 62 and supporting bracket 2.

Outlet sheet body 62 due to this three-phase contact box busbar has carried out the rotation of 90 degree, can mate and select some steering knuckles to realize overlap joint when therefore outreaching.

Above-described embodiment is only and of the present invention opening one's minds is described, and should not be considered as the concrete restriction to structure of the present invention, any simple deformation design done by embodiment, all should include protection scope of the present invention in.

Claims (3)

1. a high-tension switch cabinet three-phase contact box, comprise A, B, C three-phase box body (1) be set up in parallel, the sidewall of every phase box body (1) extends a line outlet groove in the same way, a slice busbar (6,7,8) is respectively provided with in these three line outlet grooves, the part of these busbars within line outlet groove notch (3) is brace body (61), and the part beyond this line outlet groove notch (3) is outlet sheet body (62); Described brace body (61) is horizontal positioned, and its free-end is connected to fixed contact and installs on inserts (4), it is characterized in that: described outlet sheet body (62) and described brace body (61) are orthogonal integral die-cast molded part.

2. three-phase contact box as claimed in claim 1, is characterized in that: described brace body (61) downward is folded to position (64) having one near outlet sheet body (62) place.

3. three-phase contact box as claimed in claim 1 or 2, is characterized in that: have epoxy resin cover layer (65) in the mutual vicinal periphery of described brace body (61) and outlet sheet body (62).