Arc extinction type overvoltage protector

Abstract

The utility model relates to an arc extinction type overvoltage protector, which comprises a protector body, a supporting insulator, a wire clamp and a connecting assembly, the protector body and the bottom end of the supporting insulator are arranged on the connecting assembly, a bus is arranged on the upper side of the top end of the supporting insulator, the wire clamp is arranged on the bus, and an arc striking electrode is arranged on the lower surface of the wire clamp. A circular arc extinguishing ring is arranged at the top end of the protector body and is arranged right below the arc striking electrode; the connecting assembly comprises a bottom plate, a mounting base, a rotating base and an L-shaped plate, the top of the mounting base is provided with a mounting groove detachably connected with the bottom end of the supporting insulator, the mounting base is provided with the rotating base capable of rotating around a center shaft in the vertical direction, and the end, away from the mounting base, of the rotating base is provided with a sliding groove in the vertical direction; the sliding groove is in sliding connection with the vertical part of the L-shaped plate, and the outer end of the horizontal part of the L-shaped plate is provided with a long-strip-shaped groove detachably connected with the bottom end of the protector body. The device has the advantages of being good in arc extinguishing effect, good in anti-interference performance and flexible and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of overvoltage protectors, in particular to an arc-extinguishing overvoltage protector. Background Art

[0002] Overvoltage protector is an advanced protective device that limits lightning overvoltage and operating overvoltage. It is mainly used to protect the insulation of electrical equipment from overvoltage damage.

[0003] Traditional overvoltage protectors are mainly composed of a spherical arc-extinguishing electrode, a protector body and a mounting bracket. The spherical arc-extinguishing electrode is generally located directly below the line to facilitate arc extinguishing. Since the line may swing due to factors such as wind, there is a possibility that the line will leave the influence range of the spherical arc-extinguishing electrode, reducing the arc extinguishing effect. In addition, due to the different installation environments and line directions, the mounting bracket structure is often relatively fixed, which makes it difficult to place the spherical arc-extinguishing electrode in the ideal position, increasing the workload of the installers. Utility Model Content

[0004] The utility model aims to provide an arc extinguishing type overvoltage protector, which has the advantages of good arc extinguishing effect, good anti-interference performance and flexible and convenient installation.

[0005] The technical solution of the utility model is as follows:

[0006] An arc-extinguishing overvoltage protector comprises a protector body, a supporting insulator, a wire clamp and a connecting assembly, wherein the bottom ends of the protector body and the supporting insulator are mounted on the connecting assembly, a busbar is provided on the upper side of the top of the supporting insulator, a wire clamp is provided on the busbar, an arc-striking electrode is provided on the lower surface of the wire clamp, a circular arc-striking ring is provided on the top of the protector body, and the circular arc-striking ring is provided directly below the arc-striking electrode; the connecting assembly comprises a bottom plate, a mounting seat, a rotating seat and an L-shaped plate, wherein the bottom plate is connected to the horizontal beam of the grounding bracket, a mounting seat is provided on the top of the bottom plate, and the mounting seat It is a cylinder, and the top of the mounting seat is provided with a mounting groove which is detachably connected to the bottom end of the supporting insulator, and the mounting seat is provided with a rotating seat which can rotate around its central axis in the vertical direction, and the end of the rotating seat away from the mounting seat is provided with a sliding groove in the vertical direction, and the sliding groove is slidably connected to the vertical part of the L-shaped plate, and the outer end of the horizontal part of the L-shaped plate is provided with a long groove which is detachably connected to the bottom end of the protector body, and the rotating seat is provided with a locking component A for limiting the rotating seat from rotating movement, and the vertical part of the L-shaped plate is provided with a locking component B for limiting the lifting movement of the L-shaped plate.

[0007] Preferably, the locking assembly A includes a locking screw, which is threadedly connected to the rotating seat, and the mounting seat is provided with an arc groove corresponding to the locking screw, the center of the arc groove is on the central axis of the mounting seat, and the locking screw can be rotated to the bottom of the arc groove, and the friction between the bottom end of the locking screw and the bottom of the arc groove is used to limit the rotation of the rotating seat, and the bottom of the arc groove is provided with an anti-slip layer.

[0008] Preferably, the number of the locking screws is 2.

[0009] Preferably, the locking assembly B includes a locking bolt, and the vertical part of the L-shaped plate is threadedly connected with the locking bolt. The bottom of the sliding groove is provided with a vertical long hole for the locking bolt to pass through. The locking bolt is fixed to the vertical long hole to limit the lifting and lowering movement of the L-shaped plate.

[0010] Preferably, the number of the locking bolts B is 2.

[0011] Preferably, an arc groove is provided on the side wall of the mounting seat along the circumference, the center of the arc groove is on the central axis of the mounting seat, and a sliding block is provided on the surface of the rotating seat facing the mounting seat, and the sliding block slides along the arc groove.

[0012] Preferably, a straight hole is provided on the side of the base plate, and the connection between the base plate and the horizontal beam is achieved by inserting a fixing screw threadably connected to the horizontal beam into the straight hole.

[0013] The utility model has the following beneficial technical effects:

[0014] When the busbar encounters a lightning overvoltage, the arc-striking electrode, the circular arc-extinguishing ring and the protector body help to quickly release the lightning current and eliminate the arc generated by the discharge. Compared with the traditional spherical arc-extinguishing electrode, the circular arc-extinguishing ring has a larger area. Even if the busbar shakes due to factors such as wind, the arc-striking electrode is still within the influence range of the circular arc-extinguishing ring, and has good anti-interference performance. In addition, through the rotating seat with adjustable orientation angle on the mounting seat, the L-shaped plate with adjustable height on the sliding groove, and the bottom of the protector body with adjustable position on the long groove of the L-shaped plate, the arc-extinguishing ring can be flexibly moved, which is convenient for setting it in a position suitable for cooperating with the arc-striking electrode to obtain a better arc-extinguishing effect, and the optional range of the installation position of the wire clamp on the busbar is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the utility model will be further described below in conjunction with the accompanying drawings.

[0016] Attached Figure 1 It is the front view of the utility model.

[0017] Attached Figure 2 It is a top view of the utility model.

[0018] Attached Figure 3 It is a top view of the connection assembly of the utility model.

[0019] Attached Figure 4 It is a partial cross-sectional view of the utility model at the vertical part of the sliding groove and the L-shaped plate.

[0020] In the figure: 1-protector body, 2-support insulator, 3-clamp, 4-connecting assembly, 5-busbar, 6-arc-striking electrode, 7-circular arc-extinguishing ring, 8-base plate, 9-mounting seat, 10-rotating seat, 11-L-shaped plate, 12-horizontal beam, 13-sliding groove, 14-locking assembly A, 15-locking assembly B, 16-locking screw, 17-arc groove, 18-locking bolt, 19-vertical long hole, 20-arc slide groove, 21-slotted hole, 22-fixing screw, 23-long groove. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example:

[0023] like Figures 1 to 4 As shown, this embodiment provides an arc-extinguishing overvoltage protector, including a protector body 1, a supporting insulator 2, a wire clamp 3 and a connecting assembly 4, the bottom ends of the protector body 1 and the supporting insulator 2 are mounted on the connecting assembly 4, a busbar 5 is provided on the upper side of the top of the supporting insulator 2, the busbar 5 is provided with a wire clamp 3, the lower surface of the wire clamp 3 is provided with an arc-striking electrode 6, a circular arc-extinguishing ring 7 is provided on the top of the protector body 1, and the circular arc-extinguishing ring 7 is provided directly below the arc-striking electrode 6; the connecting assembly 4 includes a bottom plate 8, a mounting seat 9, a rotating seat 10 and an L-shaped plate 11, the bottom plate 8 is connected to the horizontal beam 12 of the grounding bracket, the top of the bottom plate 8 is provided with a mounting seat 9, and the mounting The seat 9 is a cylinder, and a mounting groove is provided on the top of the mounting seat 9 which is detachably connected to the bottom end of the supporting insulator 2. A rotating seat 10 which can rotate around its central axis in the vertical direction is provided on the mounting seat 9. A sliding groove 13 is provided in the vertical direction at one end of the rotating seat 10 away from the mounting seat 9. The sliding groove 13 is slidably connected to the vertical part of the L-shaped plate 11. The outer end of the horizontal part of the L-shaped plate 11 is provided with a long groove 23 which is detachably connected to the bottom end of the protector body 1. A locking component A14 is provided on the rotating seat 10 to limit the rotating movement of the rotating seat 10, and a locking component B15 is provided on the vertical part of the L-shaped plate 11 to limit the lifting movement of the L-shaped plate 11.

[0024] When the busbar 5 encounters a lightning overvoltage, the arc-striking electrode 6, the circular arc-extinguishing ring 7 and the protector body 1 help the lightning current to be quickly released and the arc generated by the discharge to be eliminated. Compared with the traditional spherical arc-extinguishing electrode, the circular arc-extinguishing ring 7 has a larger area. Even if the busbar 5 shakes due to factors such as wind, the arc-striking electrode 6 is still within the influence range of the circular arc-extinguishing ring 7, and has good anti-interference performance. In addition, the arc-extinguishing ring can be flexibly moved by the rotating seat 10 that can adjust the orientation angle on the mounting seat 9, the L-shaped plate 11 that can adjust the height on the sliding groove 13, and the bottom of the protector body 1 that can adjust the position on the long groove 23 of the L-shaped plate 11, so as to facilitate the setting of the arc-extinguishing ring in a position suitable for matching the arc-striking electrode 6 to obtain a better arc-extinguishing effect, and the optional range of the installation position of the wire clamp 3 on the busbar 5 is larger. After the rotating seat 10 and the L-shaped plate 11 are adjusted, the orientation and height can be fixed by the locking assembly A14 and the locking assembly B15 respectively.

[0025] Furthermore, the locking assembly A14 includes a locking screw 16, which is threadedly connected to the rotating seat 10, and a circular arc groove 17 corresponding to the locking screw 16 is provided on the mounting seat 9. The center of the circular arc groove 17 is on the central axis of the mounting seat 9. The locking screw 16 can be rotated to the bottom of the circular arc groove 17. The friction between the bottom end of the locking screw 16 and the bottom of the circular arc groove 17 limits the rotation of the rotating seat 10. An anti-slip layer is provided at the bottom of the circular arc groove 17.

[0026] The mounting seat 9 is provided with an arc groove 17 that cooperates with the locking screw 16. The arc groove 17 is provided with an anti-slip layer on the contact surface with the locking screw 16 to increase the friction between the locking screw 16 and help the rotating seat 10 to be fixed on the mounting seat 9. When the end of the locking screw 16 hits the mounting seat 9, it will only hit the arc groove 17, which can prevent the locking screw 16 from wearing the portion of the mounting seat 9 outside the arc groove 17 and affecting the service life of the mounting seat 9.

[0027] Furthermore, the number of locking screws 16 is two.

[0028] Furthermore, the locking assembly B15 includes a locking bolt 18, and the locking bolt 18 is threadedly connected to the vertical part of the L-shaped plate 11. A vertical long hole 19 for the locking bolt 18 to pass through is provided at the bottom of the sliding groove 13. The locking bolt 18 is fixed to the vertical long hole 19 to limit the lifting and lowering movement of the L-shaped plate 11.

[0029] The nut portion of the locking bolt 18 is located on one side of the vertical portion of the L-shaped plate 11, and the screw portion of the locking bolt 18 passes through the vertical long hole 19. The nut portion of the locking bolt 18 is screwed onto the screw portion of the locking bolt 18 from the back side of the sliding groove 13. The locking bolt 18 is fixed on the vertical long hole 19 through the squeezing and friction of the nut portion of the locking bolt 18 on the back side of the sliding groove 13, thereby fixing the position of the L-shaped plate 11 on the sliding groove 13.

[0030] Furthermore, the number of the locking bolts 18B is two.

[0031] Furthermore, an arc groove 20 is provided along the circumference of the side wall of the mounting seat 9, the center of which is on the central axis of the mounting seat 9, and a slider is provided on the surface of the rotating seat 10 facing the mounting seat 9, and the slider slides along the arc groove 20. By using the slider and the arc groove 20 together, the rotating seat 10 can rotate around the central axis of the mounting seat 9, thereby adjusting the direction of the circular arc extinguishing ring 7 indirectly connected to the rotating seat 10.

[0032] Furthermore, a straight hole 21 is provided on the side of the bottom plate 8, and the connection between the bottom plate 8 and the horizontal beam 12 is achieved by inserting a fixing screw 22 threadedly connected to the horizontal beam 12 into the straight hole 21. Compared with a screw hole with only a single position, the straight hole 21 has more optional insertion positions, which is convenient for the staff to install the bottom plate 8.

[0033] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. An arc-extinguishing overvoltage protector, characterized in that: It includes a protector body, a supporting insulator, a wire clamp and a connecting assembly, wherein the bottom ends of the protector body and the supporting insulator are mounted on the connecting assembly, a busbar is provided on the upper side of the top of the supporting insulator, a wire clamp is provided on the busbar, an arc-striking electrode is provided on the lower surface of the wire clamp, a circular arc-striking ring is provided on the top of the protector body, and the circular arc-striking ring is provided directly below the arc-striking electrode; the connecting assembly includes a bottom plate, a mounting seat, a rotating seat and an L-shaped plate, wherein the bottom plate is connected to the horizontal beam of the grounding bracket, a mounting seat is provided on the top of the bottom plate, and the mounting seat is a cylinder. The top of the mounting seat is provided with a mounting groove which is detachably connected to the bottom end of the supporting insulator, the mounting seat is provided with a rotating seat which can rotate around its central axis in the vertical direction, the end of the rotating seat away from the mounting seat is provided with a sliding groove in the vertical direction, the sliding groove is slidably connected to the vertical part of the L-shaped plate, the outer end of the horizontal part of the L-shaped plate is provided with a long groove which is detachably connected to the bottom end of the protector body, the rotating seat is provided with a locking component A for limiting the rotating seat from rotating movement, and the vertical part of the L-shaped plate is provided with a locking component B for limiting the L-shaped plate from lifting and lowering movement.

2. The arc-extinguishing overvoltage protector according to claim 1, characterized in that: The locking assembly A includes a locking screw, which is threadedly connected to the rotating seat, and an arc groove corresponding to the locking screw is provided on the mounting seat. The center of the arc groove is on the central axis of the mounting seat. The locking screw can be screwed to the bottom of the arc groove. The friction between the bottom end of the locking screw and the bottom of the arc groove limits the rotation of the rotating seat. The bottom of the arc groove is provided with an anti-slip layer.

3. The arc-extinguishing overvoltage protector according to claim 2, characterized in that: The number of the locking screws is 2.

4. The arc-extinguishing overvoltage protector according to claim 1, characterized in that: The locking assembly B includes a locking bolt, which is threadedly connected to the vertical part of the L-shaped plate. A vertical long hole is provided at the bottom of the sliding groove for the locking bolt to pass through. The locking bolt is fixed to the vertical long hole to limit the lifting and lowering movement of the L-shaped plate.

5. The arc-extinguishing overvoltage protector according to claim 4, characterized in that: The number of the locking bolts B is 2.

6. The arc-extinguishing overvoltage protector according to claim 1, characterized in that: An arc groove is arranged along the circumference of the side wall of the mounting seat, the center of which is on the central axis of the mounting seat, and a sliding block is arranged on the surface of the rotating seat facing the mounting seat, and the sliding block slides along the arc groove.

7. The arc-extinguishing overvoltage protector according to claim 1, characterized in that: A slotted hole is provided on the side of the bottom plate, and the connection between the bottom plate and the horizontal beam is achieved by inserting a fixing screw threadably connected to the horizontal beam into the slotted hole.

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