CN108666955B

CN108666955B - Device for reducing corona discharge of power transmission wire clamp

Info

Publication number: CN108666955B
Application number: CN201810518329.5A
Authority: CN
Inventors: 徐峰
Original assignee: Yueqing Haichuang Intelligent Technology Co Ltd
Current assignee: Pingyi Modern Chinese Medicine Industrial Park Co ltd
Priority date: 2018-05-27
Filing date: 2018-05-27
Publication date: 2020-06-02
Anticipated expiration: 2038-05-27
Also published as: CN108666955A

Abstract

The invention discloses a device for reducing corona discharge of a power transmission wire clamp, which comprises a metal mask and a locking device, wherein the metal mask comprises a rectangular top surface and four side surfaces, and edges are in smooth round corner transition; the locking device comprises a sliding piece and a spring, and the sliding piece is movably arranged on the rectangular top surface; a through hole for a bolt on the power transmission wire clamp to pass through is formed in the rectangular top surface and is positioned on a moving path of the sliding sheet; the spring is fixedly connected with the sliding piece so as to be capable of applying force to the sliding piece to enable the sliding piece to move towards the through hole. The invention discloses a device for reducing corona discharge of a transmission line clamp, and aims to solve the technical problem that corona discharge is generated at the position of the high-voltage transmission line clamp in the prior art due to the fact that a structure with an excessively small curvature radius exists.

Description

Device for reducing corona discharge of power transmission wire clamp

Technical Field

The invention relates to the field of transmission line hardware fittings, in particular to a device for reducing corona discharge of a transmission line clamp.

Background

The design and the application condition of the electrified hardware fitting of the power transmission line are related to the surface working field intensity of the electrified hardware fitting, and when the surface working field intensity is higher than the corona starting field intensity, corona discharge can be generated on the surface of the hardware fitting. The magnitude of the hardware working field intensity is closely related to the hardware structure, and researches show that the smaller the curvature radius of the hardware surface, the higher the surface working field intensity is, the more easily corona discharge occurs at the part under the same voltage action, thereby generating corona noise and electric energy loss, and being not beneficial to energy conservation and environmental protection.

The positions of the existing transmission wire clamps connected through bolts have many places with undersize curvature radiuses, and in addition, due to the requirement of maintenance purposes, some temperature detection devices, bolt anti-loosening devices and the like are often installed on the surfaces of the transmission wire clamps to generate surfaces with undersize curvature radiuses, so that corona discharge phenomena and electric energy loss always exist on some high-voltage lines. However, no product is designed for reducing corona discharge of the wire clamp in the prior art.

In view of the above, there is a need to provide a device for reducing corona discharge of a power transmission clamp to overcome or at least alleviate the above-mentioned drawbacks.

Disclosure of Invention

The invention mainly aims to provide a device for reducing corona discharge of a power transmission wire clamp, aiming at solving the technical problem of corona discharge generated by a structure with an excessively small curvature radius at the wire clamp of a high-voltage power transmission line in the prior art.

In order to achieve the aim, the invention provides a device for reducing corona discharge of a power transmission wire clamp, which is characterized by comprising a metal mask and a locking device,

the metal mask comprises a rectangular top surface and four side surfaces, and edges are in smooth round corner transition; the locking device comprises a sliding piece and a spring, and the sliding piece is movably arranged on the rectangular top surface; a through hole for a bolt on the power transmission wire clamp to pass through is formed in the rectangular top surface and is positioned on a moving path of the sliding sheet; the spring is fixedly connected with the sliding piece so as to be capable of applying force to the sliding piece to enable the sliding piece to move towards the through hole.

Preferably, one end of the spring is fixed to one side surface of the metal mask, and the other end of the spring is fixedly connected to the sliding piece.

Preferably, the locking device comprises a limiting bolt for tightening the sliding sheet in a state to be locked, and the rectangular top surface and the sliding sheet are both provided with limiting holes matched with the limiting bolt.

Preferably, the tail end of the sliding piece is an arc, and the diameter of the arc is equal to the screw diameter of the bolt.

The device has no sharp bulge and the like on the whole structure after installation so that the part with the over-small curvature radius is generated, and the top surface and the side surface of the mask are in smooth transition, thereby having a good corona-proof structure. The temperature detection device, the bolt anti-loosening device and the like which cause the local surface to have the curvature radius undersize part are covered below the face cover of the device by the aid of the nut and other convex structures on the wire clamp and surface mounting, the overall surface working field intensity of the power transmission wire clamp can be effectively improved, and corona discharge is reduced or avoided. Moreover, the device is convenient to install, is easy for high-altitude operation personnel to construct, and can be directly applied to the existing power transmission wire clamp.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of a corona reduction apparatus of the present invention applied to a power transmission clamp;

FIG. 2 is a perspective view of an apparatus for reducing corona discharge in accordance with an embodiment of the present invention;

FIG. 3 is a schematic diagram of an uninstalled state of an apparatus for reducing corona discharge in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of an installation of an apparatus for reducing corona discharge according to an embodiment of the present invention;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Metal mask	21	Sliding vane
22	Spring	23	Limit bolt
				30	Power transmission wire clamp	40	Bolt

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the device for reducing corona discharge of the power transmission line clamp provided by the invention comprises a metal mask 10 and a locking device, wherein the metal mask 10 comprises a rectangular top surface and four side surfaces, and edges of the top surface and the four side surfaces are in smooth round corner transition; the locking device comprises a slide sheet 21 and a spring 22, wherein the slide sheet 21 is movably arranged on the rectangular top surface; a through hole for the bolt 40 on the power transmission wire clamp 30 to pass through is arranged on the rectangular top surface and is positioned on the moving path of the sliding sheet 21; the spring 22 fixedly connects the slide piece 21 to be able to apply a force to the slide piece 21 to move the slide piece 21 toward the through hole.

Preferably, one end of the spring 22 is fixed to one side of the metal mask 10, and the other end of the spring 22 is fixedly connected to the sliding piece 21. However, the present invention is not limited thereto, and both ends of the spring 22 may be connected to two adjacent sliding pieces 21, respectively, and the spring 22 may have a plurality of different spatial arrangement structures, as long as a force for moving the sliding piece 21 toward the through hole can be applied to the sliding piece 21, which should be within the protection scope of the present invention. The sliding piece 21 is movably mounted on the rectangular top surface in such a manner that a corresponding sliding slot is provided on the rectangular top surface, and the sliding piece 21 moves in the sliding slot.

It should be noted that, in practice, the power transmission line clamp 40 is basically fixed by 4 bolts 40, so that 4 through holes are provided on the rectangular top surface in the embodiment, and accordingly, the number of the locking devices is 4.

Furthermore, locking device still includes and is used for tightening up gleitbretter 21 in waiting the spacing bolt 23 of locking state, all is provided with the spacing hole with spacing bolt 23 complex on rectangle top surface and the gleitbretter 21. Referring to fig. 3, before the device is applied to the power transmission cable clamp 30, the sliding piece 21 is tightened in a state to be locked, the spring 22 is in a stretched state, and the limiting bolt 23 simultaneously penetrates through the rectangular top surface and the limiting hole on the sliding piece 21. When the cable clamp is installed, the metal cover 10 is placed at the correct installation position of the cable clamp (4 bolts of the cable clamp respectively penetrate through 4 through holes in the metal cover 10), the limiting bolt 23 is pulled out, the locking device is triggered, the sliding piece 21 is clamped in a thread gap of the bolt 40 under the action of the spring 22, and therefore the cable clamp is fixed.

Preferably, the end of the sliding piece 21 is an arc with a diameter equal to the diameter of the screw of the bolt 40, and the end of the sliding piece 21 clamped in the screw is in line contact with the screw.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A device for reducing corona discharge of a power transmission wire clamp is characterized by comprising a metal mask and a locking device,

the metal mask comprises a rectangular top surface and four side surfaces, and edges are in smooth round corner transition;

the locking device comprises a sliding piece and a spring, the sliding piece is movably arranged on the rectangular top surface, and the sliding piece is positioned on the inner side of the rectangular top surface;

a through hole for a bolt on the power transmission wire clamp to pass through is formed in the rectangular top surface and is positioned on a moving path of the sliding sheet;

the spring is fixedly connected with the sliding piece so as to be capable of applying force to the sliding piece to enable the sliding piece to move towards the through hole;

the locking device comprises a limiting bolt for tightening the sliding sheet in a state to be locked, and limiting holes matched with the limiting bolt are formed in the rectangular top surface and the sliding sheet.

2. The apparatus of claim 1, wherein one end of the spring is fixed to one side of the metal cover and the other end of the spring is fixedly connected to the sliding piece.

3. The apparatus of claim 1, wherein the end of the slip is a circular arc having a diameter equal to a diameter of the bolt.