CN210575703U - Arc extinguishing mechanism of high-voltage switch - Google Patents
Arc extinguishing mechanism of high-voltage switch Download PDFInfo
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- CN210575703U CN210575703U CN201921634937.9U CN201921634937U CN210575703U CN 210575703 U CN210575703 U CN 210575703U CN 201921634937 U CN201921634937 U CN 201921634937U CN 210575703 U CN210575703 U CN 210575703U
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- arc extinguishing
- arc
- extinguishing
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Abstract
The utility model discloses a high-voltage switch arc extinguishing mechanism, which comprises a moving contact, a static contact and a plurality of arc extinguishing pieces, wherein one end of the moving contact is connected with a separation plate, and the moving contact can rotate around the separation plate; the static contact is connected with a plastic frame, and the upper end of the arc extinguishing piece is provided with an upper groove matched with the plastic frame and can be inserted into the plastic frame; the lower end of the arc-extinguishing piece is provided with a lower groove, and the width of the lower groove of the arc-extinguishing piece far away from the static contact is larger than that of the lower groove of the arc-extinguishing piece close to the static contact; the bottom of the array formed by the arc extinguishing sheets is arranged in a step shape; the utility model discloses a through the arc extinguishing piece of the different specification shapes of combination, strengthened load switch's arc extinguishing effect.
Description
Technical Field
The utility model relates to a high tension switchgear field especially relates to a high tension switchgear arc extinguishing mechanism.
Background
At present, in order to guarantee the operation safety of electrical equipment, load switch in the high tension switchgear all is provided with the explosion chamber usually for extinguish the electric arc that produces between the switch operation moving, the static contact, adopt the explosion chamber structure that has the arc extinguishing bars usually among the prior art, current arc extinguishing bars include mount pad and a plurality of arc extinguishing piece, but the arc extinguishing effect of traditional arc extinguishing bars is ideal inadequately, can not carry out the arc extinguishing fast effectively.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving the above-mentioned arc extinguishing bars poor problem of arc extinguishing effect, provide a high tension switchgear arc extinguishing mechanism.
The utility model discloses a realize through following technical scheme:
an arc extinguishing mechanism of a high-voltage switch comprises a moving contact, a fixed contact and a plurality of arc extinguishing pieces, wherein one end of the moving contact is connected with a separation plate, and the moving contact can rotate around the separation plate; the static contact is connected with a plastic frame, and the upper end of the arc extinguishing piece is provided with an upper groove matched with the plastic frame and can be inserted into the plastic frame; the lower end of the arc-extinguishing piece is provided with a lower groove, and the width of the lower groove of the arc-extinguishing piece far away from the static contact is larger than that of the lower groove of the arc-extinguishing piece close to the static contact; the bottom of the array formed by the arc extinguishing sheets is arranged in a ladder shape.
As a further improvement of the scheme, one end of the moving contact close to the static contact is provided with a gap.
As a further improvement of the above scheme, the length of the side of the static contact close to the arc-extinguishing piece is smaller than the length of the side far away from the arc-extinguishing piece.
As a further improvement of the above scheme, silver layers are electroplated on the surfaces of the arc extinguishing sheet and the static contact.
As a further improvement of the scheme, the cross section of the isolation plate is L-shaped.
As a further improvement of the above scheme, the number of the arc-extinguishing pieces of the large-width lower groove is 3, and the number of the arc-extinguishing pieces of the small-width lower groove is 9.
The beneficial effects are that: the utility model relates to a high-voltage switch arc extinguishing mechanism through the arc extinguishing piece of the different specification shapes of combination, increases the cooling area of arc extinguishing piece to electric arc to effectively lengthen electric arc, strengthened load switch's arc extinguishing effect.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic side view of a preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of a small-width arc-extinguishing piece in a preferred embodiment of the present invention;
fig. 4 is a schematic structural view of a large-width arc extinguishing piece in a preferred embodiment of the present invention.
Detailed Description
As shown in fig. 1, an arc extinguishing mechanism of a high-voltage switch includes a moving contact 1, a static contact 2 and twelve arc extinguishing plates 3, wherein one end of the moving contact 1 is connected with a separation plate 4, the cross section of the separation plate is L-shaped, the moving contact 1 can rotate around the vertical part of the L-shaped separation plate 4, and the horizontal part of the separation plate 4 is hinged with a main bus; the static contact 2 is connected with a plastic frame 5, the plastic frame is an insulator, and an arc-extinguishing piece can be fixed at the front end of the static contact 2, as shown in fig. 3 and 4, an upper groove 31 matched with the plastic frame 5 is arranged at the upper end of the arc-extinguishing piece 3 and can be inserted into the plastic frame 5; the lower ends of the arc extinguishing pieces 3 are provided with lower grooves 32, twelve lower grooves of the arc extinguishing pieces 3 are arranged to form arc extinguishing channels, the moving contact 1 can extinguish electric arcs between the static contact 2 and the moving contact 1 through the arc extinguishing channels, the width of the lower grooves 32 of the three arc extinguishing pieces 3 far away from the static contact 2 is larger than that of the lower grooves 32 of the nine arc extinguishing pieces 3 close to the static contact 2, when the moving contact 1 and the static contact 2 of the switch are just separated, the generated electric arcs are concentrated, the arc extinguishing pieces 3 with small width can well attract the electric arcs to achieve the arc extinguishing effect, after the moving contact 1 moves for a certain distance, the electric arcs are gradually dispersed, and at the moment, the arc extinguishing effect can be improved by adopting the arc extinguishing pieces 3 with large width; as shown in fig. 2, the bottoms of the arrays formed by the arc-extinguishing plates 3 are arranged in a step shape, so that the cooling area of the arc-extinguishing plates to the arc can be increased, the arc can be effectively lengthened, and the arc extinguishing effect can be increased.
Specifically, a gap 11 is formed in one end, close to the static contact 2, of the movable contact 1, when the movable contact 1 is separated from the static contact 2, an arc generated by the movable contact 1 and the static contact 2 is divided into two sections, so that the energy of the arc can be dispersed, and the gap 11 is formed by additionally arranging an arc extinguishing piece, so that the arc extinguishing effect is further enhanced.
Specifically, as shown in fig. 2, the length of the side of the static contact 2 close to the arc-extinguishing plates 3 is smaller than the length of the side far from the arc-extinguishing plates 3, which is beneficial for the arc to enter between the arc-extinguishing plates and enhances the arc-extinguishing effect again.
Specifically, silver layers are electroplated on the surfaces of the arc extinguishing sheet and the static contact, so that the overall conductivity of the switch is improved.
The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.
Claims (5)
1. The arc extinguishing mechanism of the high-voltage switch is characterized by comprising a moving contact (1), a fixed contact (2) and a plurality of arc extinguishing pieces (3), wherein one end of the moving contact (1) is connected with a separation plate (4), and the moving contact (1) can rotate around the separation plate (4); the static contact (2) is connected with a plastic frame (5), the upper end of the arc extinguishing piece (3) is provided with an upper groove (31) matched with the plastic frame (5), and the arc extinguishing piece can be inserted into the plastic frame (5); a lower groove (32) is formed in the lower end of the arc extinguishing piece (3), and the width of the lower groove of the arc extinguishing piece (3) far away from the static contact (2) is larger than that of the lower groove of the arc extinguishing piece (3) close to the static contact (2); the bottom of the array formed by the arc extinguishing sheets (3) is arranged in a step shape.
2. An arc extinguishing mechanism according to claim 1, characterized in that a gap (11) is provided at one end of the moving contact (1) close to the stationary contact (2).
3. An arc extinguishing mechanism according to claim 1, characterized in that the length of the side of the stationary contact (2) close to the arc extinguishing plate (3) is smaller than the length of the side far from the arc extinguishing plate (3).
4. The arc extinguishing mechanism according to claim 1, characterized in that the surfaces of the arc extinguishing plate (3) and the static contact (2) are plated with silver layers.
5. An arc extinguishing mechanism according to claim 1, characterised in that the isolating plate (4) is an L-shaped plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634937.9U CN210575703U (en) | 2019-09-27 | 2019-09-27 | Arc extinguishing mechanism of high-voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634937.9U CN210575703U (en) | 2019-09-27 | 2019-09-27 | Arc extinguishing mechanism of high-voltage switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210575703U true CN210575703U (en) | 2020-05-19 |
Family
ID=70658942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921634937.9U Active CN210575703U (en) | 2019-09-27 | 2019-09-27 | Arc extinguishing mechanism of high-voltage switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210575703U (en) |
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2019
- 2019-09-27 CN CN201921634937.9U patent/CN210575703U/en active Active
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