CN206628399U - A high-voltage isolating switch moving contact with strong contact performance - Google Patents

Abstract

The present invention provides a high-voltage isolating switch moving contact with strong contact performance. By utilizing the arrangement of the first copper sheet bearing plate and the second copper sheet bearing plate, the contact between the knife switch body and the two bearing plates can be an "I" type contact after the knife switch body is closed. Compared with the "H" type contact in the prior art, the present invention increases the contact area and greatly reduces the contact resistance, thereby avoiding the burning of the isolating switch due to heat generation at the contact point and increasing the service life. At the same time, it can also ensure that in the event of misoperation, the arc generated at the moment of electric shock disconnection due to load switching is reduced, thereby ensuring that the knife switch body will not be damaged.

Description

A high-voltage isolating switch moving contact with strong contact performance

technical field

The utility model relates to the field of isolating switches, in particular to a moving contact of a high-voltage isolating switch with strong contact performance.

Background technique

The isolating switch is an on-off device in the high-voltage equipment sequence, which is used to change the system operation mode and the opening and closing of small current circuits. The GW9 type is a single-fracture vertical open structure, and the single-pole isolating switch post insulators are installed on their respective chassis. It is composed of base, post insulator, main conductive circuit part, self-locking device, etc. It adopts switch knife structure to open and close to cut and close the circuit. Each phase switch knife is composed of two conductive blades. Compression springs are installed on both sides of the blades. Adjust the height of the spring to obtain the contact pressure required for switching the switch knife. When the switch is opened and closed, the insulating hook rod is used to operate the mechanism part, and the switch knife has a self-locking device.

Conventional isolating switch contacts are formed by bending copper bars. The contact between such contacts and the knife switch is "H-shaped" with small contact area and large contact resistance. When energized, it is easy to generate heat and burn the isolating switch.

Contents of the invention

In order to overcome the above problems, the present invention provides a high-voltage isolating switch moving contact with strong contact performance.

In order to achieve the above object, the technical solution provided by the present invention is:

A moving contact of a high-voltage isolating switch with strong contact performance, including an incoming line contact, an outgoing line contact, and a knife gate body; one end of the knife gate body is hinged on the outgoing line contact, and the other end can be in contact with the incoming line contact ; The incoming contact includes a first insulating column, and a first insulating plate is arranged on the first insulating column; the outgoing contact includes a second insulating column, and a second insulating plate is arranged on the second insulating column. Insulating plate; the first insulating plate and the second insulating plate are respectively provided with a first copper carrying plate and a second copper carrying plate; the bottom of the second copper carrying plate is fixed on the second insulating column A hinge hole is arranged on the side wall of the second copper sheet bearing plate, and one end of the knife gate body is hinged in the hinge hole through a hinge shaft; the bottom end of the first copper sheet bearing plate is fixed on the first insulating plate , the setting position of the first copper sheet bearing plate is satisfied: when the knife gate body is closed, the side wall surface of the head end of the knife gate body can be in contact with the side wall surface of the first copper sheet bearing plate.

At least one limit groove is arranged on the first copper plate bearing plate, and the limit groove is arranged on the side wall surface contacting with the knife gate body on the first copper plate support plate; in the limit groove A conductive piece and a conductive plate are provided, the conductive plate is set in the limit groove, an insulating spring is set between the conductive plate and the bottom of the limit groove, the conductive piece is set on the conductive plate, and the insulating spring satisfies: When there is no external force, the insulating spring can force the conductive part on the other wall of the conductive plate to protrude from the limiting groove.

The conductive element includes a circular conductive bead, and the cross-sectional area of the head end of the limiting groove is smaller than the diameter of the conductive bead.

An oblique guide edge is provided on the tops of the first copper plate and the second copper plate.

The benefits of the above technical solution are:

The new model provides a moving contact of a high-voltage isolating switch with strong contact performance. By using the setting of the first copper plate and the second copper plate, the knife gate body can be connected with the two gates after closing. The contact of the bearing plate is a "one" type contact. Compared with the "H" type contact in the prior art, the new type increases the contact area, greatly reduces the contact resistance, and can avoid the burning of the isolating switch due to the heating of the contact point. occurrence, which improves the service life; at the same time, it can also ensure that in the case of misoperation, the arc generated at the moment of electric shock and disconnection caused by the load-loaded switch can be reduced, and the knife gate body will not be damaged.

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

Description of drawings

Fig. 1 is the structure schematic diagram of the new embodiment 1;

Fig. 2 is a schematic structural view of the knife gate body in the closed state of Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of the first copper sheet bearing plate in Embodiment 1 of the present invention;

Fig. 4 is a schematic structural view of a second copper sheet carrier plate in Embodiment 1 of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of the first copper sheet carrier plate in Embodiment 1 of the present invention.

detailed description

Example 1

As shown in Figures 1 and 2, a moving contact of a high-voltage isolating switch with strong contact performance, Figure 1 is a schematic diagram of the structure of the new type of isolating switch when it is in the open state, and Figure 2 is a schematic diagram of the structure of the new type of isolating switch when it is in the closed state Schematic diagram of the structure, which includes an incoming line contact 1, an outgoing line contact 2, and a knife gate body 3; one end of the knife gate body 3 is hinged on the outgoing line contact 2, and the other end can be in contact with the incoming line contact 1; the The incoming line contact 1 includes a first insulating column 10, and a first insulating plate 11 is arranged on the first insulating column 10; the outgoing line contact 2 includes a second insulating column 20, and the second insulating column 20 A second insulating plate 21 is provided; a first copper carrying plate 12 and a second copper carrying plate 22 are respectively arranged on the first insulating plate 11 and the second insulating plate 21; the second copper carrying plate The bottom of 22 is fixed on the second insulating column 21, and the side wall surface of the second copper plate 22 is provided with hinged hole 220, and one end of knife gate body 3 is hinged in hinged hole 220 by hinge shaft 30; The bottom end of the first copper sheet carrier plate 12 is fixed on the first insulating plate 11, and the setting position of the first copper sheet carrier plate 12 is satisfied: when the knife gate body 3 is closed, the side wall surface of the head end of the knife gate body 3 Can be in contact with the side wall surface of the first copper sheet carrying plate 12; By such setting, utilize the setting of the first copper sheet carrying plate and the second copper sheet carrying plate, can make the knife gate body after closing, the knife gate body and The contact between the two bearing plates is a "one" type contact. Compared with the "H" type contact in the prior art, the new type increases the contact area, greatly reduces the contact resistance, and can avoid burning the isolating switch due to heat at the contact point In the event of accidents, the service life is improved; at the same time, it can also ensure that in the case of misoperation, the arc generated at the moment of electric shock and disconnection caused by the load-loaded switch is reduced, and the knife gate body will not be damaged.

Specifically, at least one limiting groove 120 is provided on the first copper carrier plate 12, and the limiting groove 120 is arranged on the side wall surface of the first copper carrier plate 12 that is in contact with the knife gate body 3; A conductive member 121 and a conductive plate 122 are arranged in the limiting groove 120, the conductive plate 122 is arranged in the limiting groove 120, and an insulating spring 123 is arranged between the conductive plate 122 and the bottom of the limiting groove 120, The conductive member 121 is arranged on the conductive plate 122, and the insulating spring 123 is satisfied: when there is no external force, the insulating spring 123 can force the conductive member 121 on the other wall of the conductive plate to extend out of the limiting groove 120; When closing, if the contact between the knife gate body and the first copper carrier plate is not tight after closing, the conductive part can extend out of the limit groove under the action of the insulating spring and contact with the knife gate body. In this way, it can be ensured that the electrical conductivity between the knife gate body and the conductive plate will not be affected.

Specifically, the conductive member 121 includes a circular conductive bead, and the cross-sectional area of the head end of the limiting groove 120 is smaller than the diameter of the conductive bead; through such an arrangement, the conductive bead can be prevented from falling out of the limiting groove.

More specifically, in this embodiment, there are three limiting grooves 120 , and each limiting groove 120 is provided with a conductive plate 122 and a conductive member 121 .

More preferably, oblique guide edges 120, 220 are provided on the tops of the first copper sheet carrier plate 12 and the second copper sheet carrier plate 22; through such arrangement, when the knife gate body is closed, the The knife gate body and the conductive plate are in line-to-line contact when they first contact, which can reduce the wear degree of the conductive plate and the copper parts on the knife gate body, and improve the service life and the conductivity when closing.

Claims (4)

1. A moving contact of a high-voltage isolating switch with strong contact performance, including an incoming line contact, an outgoing line contact, and a knife gate body; one end of the knife gate body is hinged on the outgoing line contact, and the other end can be connected to the incoming line contact. head contact; the incoming line contact includes a first insulating column, and a first insulating plate is arranged on the first insulating column; the outgoing line contact includes a second insulating column, and the second insulating column is provided with a The second insulating plate; it is characterized in that: a first copper sheet carrying plate and a second copper sheet carrying plate are respectively arranged on the first insulating plate and the second insulating plate; the bottom of the second copper sheet carrying plate is fixed On the second insulating column, a hinged hole is provided on the side wall of the second copper sheet bearing plate, and one end of the knife gate body is hinged in the hinged hole through a hinge shaft; the bottom end of the first copper sheet bearing plate is fixed On the first insulation board, the position of the first copper sheet bearing plate is satisfied: when the knife gate body is closed, the side wall surface of the head end of the knife gate body can be in contact with the side wall surface of the first copper sheet bearing plate. 2. A high-voltage isolating switch moving contact with strong contact performance as claimed in claim 1, characterized in that: at least one limiting groove is arranged on the first copper plate, and the limiting groove is set On the side wall surface in contact with the knife gate body on the first copper sheet carrier plate; a conductive member and a conductive plate are arranged in the limiting groove, the conductive plate is arranged in the limiting groove, and the conductive plate and the limiting groove An insulating spring is arranged between the bottom of the groove, and the conductive part is arranged on the conductive plate, and the insulating spring is satisfied: when there is no external force, the insulating spring can force the conductive part on the other wall of the conductive plate to extend out of the limit recess groove. 3. A high-voltage isolating switch moving contact with strong contact performance as claimed in claim 2, characterized in that: the conductive member includes a circular conductive bead, and the cross-sectional area of the head end of the limiting groove is less than Conductive bead diameter. 4. A high-voltage isolating switch moving contact with strong contact performance as claimed in claim 1, characterized in that: oblique guides are arranged on the tops of the first copper plate and the second copper plate side.