Wire clamp energy-saving anti-corona device

Abstract

The present invention discloses a wire clamp energy-saving anti-corona device, the wire clamp energy-saving anti-corona device comprises a metal mask and a locking device, each edge of the metal mask is a smooth rounded transition; the metal mask comprises a top surface, a first side surface connected to the top surface, and a through hole formed on the top surface for the wire clamp bolt to pass through; the locking device comprises a locking plate, a spring and a base plate, the locking plate is located between the through hole and the first side surface, and is slidably installed on the top surface along the locking direction moving toward the through hole; a connecting portion is provided on the base plate, the connecting portion passes through the first side surface and is fixed to the outer wall surface of the first side surface to fix the base plate to the inner wall surface of the first side surface; the first end of the spring is connected to the base plate, and the second end of the spring is connected to the locking plate so as to be able to apply force to the locking plate along the locking direction. The wire clamp energy-saving anti-corona device of the present invention is intended to solve the technical problem that the existing anti-corona device is inconvenient to install and disassemble.

Description

Technical Field

[0001] The invention relates to the field of power transmission line hardware, and in particular to a wire clamp energy-saving and corona-proof device. Background Art

[0002] The design and application conditions of live fittings of power transmission lines are related to their surface working field strength. When the surface working field strength is higher than the corona initiation field strength, corona discharge will occur on the surface of the fittings. The size of the working field strength of the fittings is closely related to the structure of the fittings. Studies have shown that the smaller the radius of curvature of the fitting surface, the higher the surface working field strength under the same voltage, and the more likely it is to have corona discharge, thereby generating corona noise and power loss, which is not conducive to energy saving and environmental protection.

[0003] There are many places where the radius of curvature is too small in the parts of the existing power line clamps connected by bolts. In addition, due to maintenance purposes, some temperature detection devices, bolt anti-loosening devices, etc. are often installed on the surface of the power line clamps, which also produce surfaces with too small radius of curvature, so that corona discharge has always existed on some high-voltage lines, causing power loss. Patent document CN201810518329.5 discloses an anti-corona device that can be firmly fixed on the bolts of the power line clamp after triggering and locking, and can achieve the effect of reducing corona discharge. However, the design of the device does not take into account the problem of disassembly. After successful installation, it can only be disassembled violently, and it is not easy to disassemble in a high-altitude working environment. Summary of the invention

[0004] The main purpose of the present invention is to provide a wire clamp energy-saving anti-corona device, which is intended to solve the technical problem of inconvenient installation and disassembly of existing anti-corona devices.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an energy-saving and anti-corona device for a wire clamp, comprising a metal mask and a locking device, wherein the edges of the metal mask have a smooth rounded transition; the metal mask comprises a top surface, a first side surface connected to the top surface, and a through hole formed on the top surface for the wire clamp bolt to pass through; the locking device comprises a locking plate, a spring and a substrate, the locking plate is located between the through hole and the first side surface, and is slidably installed on the top surface along a locking direction moving toward the through hole; a connecting portion is provided on the substrate, the connecting portion passes through the first side surface and is fixed to the outer wall surface of the first side surface to fix the substrate to the inner wall surface of the first side surface; the first end of the spring is connected to the substrate, and the second end of the spring is connected to the locking plate so as to be able to apply force to the locking plate along the locking direction.

[0006] Preferably, the wire clamp energy-saving and anti-corona device further comprises a limiting screw; in the state to be installed, the limiting screw sequentially passes through the first side surface and the base plate and is threadedly connected with the locking piece.

[0007] Preferably, a mounting hole is provided on the first side surface, and the connecting portion is a sheet metal piece that passes through the mounting hole and is bent and abuts against the outer wall surface of the first side surface.

[0008] Preferably, a mounting hole is provided on the first side surface, and the connecting portion is a fastening screw that passes through the mounting hole and is threadedly connected to the substrate.

[0009] Preferably, the locking plate includes a first end parallel to the top surface and a second end forming an angle with the top surface, and a limit seat for guiding the first end of the locking plate is provided on the top surface; the second end of the spring is connected to the second end of the locking plate.

[0010] Preferably, a side of the first end of the locking piece close to the through hole is configured to be arc-shaped.

[0011] Preferably, the metal mask comprises a second side surface, a third side surface and a fourth side surface connected to the top surface, the first side surface and the third side surface are arranged opposite to each other and the locking device is arranged on both the first side surface and the third side surface.

[0012] Preferably, the top surface is a rectangular surface, and the first side surface, the second side surface, the third side surface and the fourth side surface form a rectangle.

[0013] In the scheme of the present application, firstly, after installation, the anti-corona device has no sharp protrusions on the overall structure that cause the curvature radius to be too small, and the top and side surfaces of the mask have a smooth transition, so it has a good anti-corona structure. The device can cover the protruding structures such as nuts on the wire clamp and some surface-mounted temperature detection devices, bolt anti-loosening devices, etc. that cause the local surface to have a small curvature radius under the mask of the device, which can effectively improve the overall surface working field strength of the transmission line clamp and reduce or avoid corona discharge. In the working state, the locking piece is embedded in the thread gap of the bolt of the transmission line rack under the action of the spring, and multiple locking pieces can firmly fix the metal mask on the wire clamp bolt under the force of the spring. In addition, since the locking device includes a locking piece, a spring and a substrate; a connecting part is provided on the substrate, and the connecting part passes through the first side surface and is fixed to the outer wall surface of the first side surface to fix the substrate to the inner wall surface of the first side surface, so when disassembling, it is only necessary to remove the connecting part externally to separate the locking device from the metal mask to complete the disassembly of the entire device, which greatly reduces the difficulty of disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the mechanisms shown in these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the application of the wire clamp energy-saving and anti-corona device according to an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of the installation state of the wire clamp energy-saving and anti-corona device according to an embodiment of the present invention;

[0017] Figure 3 A partial view of a wire clamp energy-saving and anti-corona device according to an embodiment of the present invention;

[0018] Figure 4 A partial view of another embodiment of the wire clamp energy-saving and anti-corona device of the present invention;

[0019] Figure 5 This is a view of the wire clamp energy-saving and anti-corona device in an embodiment of the present invention in a state ready to be installed.

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0021] Description of Figure Numbers:

[0022] Label name Label name 101 Wire clamp energy-saving anti-corona device 102 Transmission line clamp 100 Metal mask 103 bolt 120 First side 110 Top 220 spring 210 Locking piece 240 Connection 230 substrate 250 Limit screw DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] Please see attached Figure 1 To Attachment Figure 4 The present invention provides a wire clamp energy-saving anti-corona device 101, comprising a metal mask 100 and a locking device, wherein the edges of the metal mask 100 are smooth and rounded; the metal mask 100 comprises a top surface 110, a first side surface 120 connected to the top surface 110, and a through hole formed on the top surface 110 for the wire clamp bolt 103 to pass through; the locking device comprises a locking piece 210, a spring 220 and a base plate 230, wherein the locking piece 210 is located between the through hole and the first side surface 120, and It is slidably installed on the top surface 110 along the locking direction moving toward the through hole; a connecting portion 240 is provided on the base plate 230, and the connecting portion 240 passes through the first side surface 120 and is fixed to the outer wall surface of the first side surface 120 to fix the base plate 230 to the inner wall surface of the first side surface 120; the first end of the spring 220 is connected to the base plate 230, and the second end of the spring 220 is connected to the locking plate 210 so as to be able to apply force to the locking plate 210 along the locking direction.

[0028] In the scheme of the present application, firstly, after installation, the anti-corona device has no sharp protrusions on the overall structure that cause the curvature radius to be too small, and the top surface 110 and the side of the mask have a smooth transition, so it has a good anti-corona structure. The device can cover the protruding structures such as nuts on the power line clamp 102 and some surface-mounted temperature detection devices and bolt 103 anti-loosening devices that cause the local surface to have a curvature radius that is too small under the mask of the device, which can effectively improve the overall surface working field strength of the power line clamp 102 and reduce or avoid corona discharge. In the working state, the locking piece 210 is embedded in the thread gap of the bolt 103 of the power line rack under the action of the spring 220, and multiple locking pieces 210 can jointly apply force under the force of the spring 220 to firmly fix the metal mask 100 on the bolt 103 of the power line clamp 102. In addition, since the locking device includes a locking plate 210, a spring 220 and a base plate 230; a connecting portion 240 is provided on the base plate 230, and the connecting portion 240 passes through the first side surface 120 and is fixed to the outer wall surface of the first side surface 120 to fix the base plate 230 to the inner wall surface of the first side surface 120, during disassembly, it is only necessary to remove the connecting portion 240 from the outside to separate the locking device from the metal mask 100, thereby completing the disassembly of the entire device, which greatly reduces the difficulty of disassembly.

[0029] It should be noted that, since the power transmission line clamp 102 is basically fixed by four bolts 103 in practice, four through holes are provided on the top surface 110 in the drawings of this embodiment, and accordingly, the number of the locking plates 210 is also four.

[0030] Preferably, see the attached Figure 5 , the energy-saving and anti-corona device 101 of the wire clamp further includes a limit screw 250; in the state to be installed, the limit screw 250 passes through the first side surface 120 and the base plate 230 in sequence and is threadedly connected with the locking plate 210. The limit screw 250 is used to tighten the locking plate 210 to the state to be locked. Specifically, the first side surface 120 and the base plate 230 are provided with holes for the limit screw 250 to pass through, and the locking plate 210 is provided with a threaded hole that is threadedly matched with the limit screw 250. During installation, the energy-saving and anti-corona device of the wire clamp is placed in the correct installation position of the power transmission line clamp 102 (the four bolts 103 of the power transmission line clamp 102 respectively pass through the four through holes on the metal mask 100), and the limit screw 250 is screwed out, the locking device is triggered, and the locking plate 210 is stuck in the thread gap of the bolt 103 under the action of the spring 220, so that the device is fixed. Furthermore, two adjacent locking pieces 210 located on the same side may be connected together, so that the two locking pieces 210 are controlled by a limiting screw 250 .

[0031] Please see attached Figure 3As a possible implementation of the present invention, a mounting hole is provided on the first side surface 120, and the connecting portion 240 is a sheet metal piece that passes through the mounting hole and is bent and abuts against the outer wall surface of the first side surface 120. The sheet metal piece can be welded to the base plate 230, and the base plate 230 and the sheet metal piece are clamped and fixed on the first side surface 120. Since the sheet metal piece is on the outer wall surface of the first side surface 120, during disassembly, the operator can twist and break the sheet metal piece with tools such as pliers, so that the base plate 230 is separated from the metal mask 100 (that is, the locking device is separated from the metal mask 100), thereby completing the disassembly of the entire device, which is very convenient.

[0032] Please see attached Figure 4 As another possible implementation of the present invention, a mounting hole is provided on the first side surface 120, and the connecting portion 240 is a fastening screw that passes through the mounting hole and is threadedly connected to the base plate 230. The head of the fastening screw is located on the outer wall surface of the first side surface 120. Since the base plate 230 is fixed to the first side surface 120 by the fastening screw, during disassembly, the operator can loosen the screw with a tool such as a screwdriver, so that the base plate 230 is separated from the metal mask 100 (that is, the locking device is separated from the metal mask 100), thereby completing the disassembly of the entire device.

[0033] Preferably, the locking piece 210 includes a first end parallel to the top surface 110 and a second end at an angle to the top surface 110, and a limiting seat for guiding the first end of the locking piece 210 is provided on the top surface 110; the second end of the spring 220 is connected to the second end of the locking piece 210. The thickness of the locking piece 210 should be less than the pitch of the thread, wherein the first end of the locking piece 210 is arranged on a side close to the through hole in an arc shape, and the locking piece 210 inserted into the thread achieves line contact with the screw to enhance the clamping stability. The guiding direction of the limiting seat is parallel to the locking direction of the locking piece 210, and at the same time, the force direction of the spring 220 is also parallel to the locking direction of the locking piece 210.

[0034] Specifically, the metal mask 100 actually includes a second side surface, a third side surface, and a fourth side surface connected to the top surface 110, and the first side surface 120 and the third side surface are arranged opposite to each other and locking devices are arranged on the first side surface 120 and the third side surface. In practical applications, the top surface 110 is a rectangular surface, and the first side surface 120, the second side surface, the third side surface, and the fourth side surface form a rectangle. Two adjacent locking devices can share a base plate 230.

[0035] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent mechanism or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wire clamp energy-saving anti-corona device, characterized in that: The energy-saving and anti-corona device of the wire clamp comprises a metal mask and a locking device, and the edges of the metal mask are smoothly rounded; the metal mask comprises a top surface, a first side surface connected to the top surface, and a through hole formed on the top surface for the wire clamp bolt to pass through; the locking device comprises a locking plate, a spring and a base plate, the locking plate is located between the through hole and the first side surface, and is slidably installed on the top surface along the locking direction moving toward the through hole; a connecting portion is provided on the base plate, and the connecting portion passes through the first side surface and is fixed to the outer wall surface of the first side surface to fix the base plate on the inner wall surface of the first side surface; the first end of the spring is connected to the substrate, and the second end of the spring is connected to the locking plate so as to be able to apply force to the locking plate along the locking direction; the wire clamp energy-saving and anti-corona device also includes a limit screw, which, in the waiting installation state, passes through the first side surface and the substrate in sequence and is threadedly connected to the locking plate; a mounting hole is provided on the first side surface, and the connecting part is a sheet metal piece that is bent and abuts against the outer wall surface of the first side surface after passing through the mounting hole, or the connecting part is a fastening screw that is threadedly connected to the substrate after passing through the mounting hole.

2. The wire clamp energy-saving and anti-corona device according to claim 1 is characterized in that: The locking plate includes a first end parallel to the top surface and a second end forming an angle with the top surface, and a limiting seat for guiding the first end of the locking plate is arranged on the top surface; the second end of the spring is connected to the second end of the locking plate.

3. The wire clamp energy-saving and anti-corona device according to claim 2 is characterized in that: A side of the first end of the locking sheet close to the through hole is configured in an arc shape.

4. The wire clamp energy-saving and anti-corona device according to any one of claims 1 to 3, characterized in that: The metal mask includes a second side surface, a third side surface and a fourth side surface connected to the top surface, the first side surface and the third side surface are arranged opposite to each other, and the locking device is arranged on the first side surface and the third side surface.

5. The wire clamp energy-saving and anti-corona device according to claim 4, characterized in that: The top surface is a rectangular surface, and the first side surface, the second side surface, the third side surface and the fourth side surface form a rectangle.

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