CN210715494U

CN210715494U - Special insulating bolt

Info

Publication number: CN210715494U
Application number: CN201921293482.9U
Authority: CN
Inventors: 罗志伟; 王志高; 聂松; 段明礼; 陈雪松; 阳华; 胡海
Original assignee: Hubei Chaoneng Electric Power Co ltd
Current assignee: Hubei Chaoneng Electric Power Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-09
Anticipated expiration: 2029-08-12

Abstract

The utility model relates to a special insulating bolt, which comprises a bolt body and an insulating mechanism; the bolt body comprises a screw and two conductive nuts, the two conductive nuts are arranged at two ends of the insulating mechanism, and a flat gasket is arranged between the conductive nuts and the insulating mechanism. The insulation mechanism comprises two insulation nuts and an insulation layer wrapped on the outer surface of the screw rod, and the two insulation nuts are arranged at two ends of the insulation layer wrapped on the screw rod. The utility model discloses a special type insulating bolt can make equipment keep equipment and the insulating isolation of lead wire under the condition of not demolising the high-pressure lead wire and can go on the preliminary examination, and is simple and easy, can guarantee the test error again, shortens high altitude construction time, has improved work efficiency.

Description

Special insulating bolt

Technical Field

The utility model belongs to high pressure preliminary examination field, in particular to be used for insulating a special type insulating bolt who keeps apart high-pressure lead wire and preliminary examination equipment.

Background

A large number of large-scale high-voltage devices and equipment are adopted in a power transformation and distribution system, and the high-voltage devices and equipment need to be subjected to preventive tests (pre-test for short) regularly to test whether various electrical performance indexes of the high-voltage devices and equipment are qualified or not so as to ensure the safe and stable operation of the whole system. In order to ensure the accuracy and reliability of a test result in the pre-test process, the related influence of other equipment on the tested equipment is eliminated, and meanwhile, the safety of peripheral equipment and personnel is ensured, the related high-voltage lead wire needs to be detached, so that the tested equipment and the peripheral equipment form 'disconnection' and 'insulation' in a circuit connection relation. And then, high-voltage pre-test debugging is carried out, sometimes, the overlong primary drainage wire which needs to be disconnected needs to be slowly placed by drawing the insulating rope, and then fixing measures are taken, so that if the overlong primary drainage wire needs to be too heavy and the insulating rope needs to be dragged very difficultly during installation and recovery, and the installation is very inconvenient. Sometimes, the lead wires are scattered and deformed due to repeated assembly and disassembly, the installation time is long, and the like, and the work difficulty of breaking and restoring is increased due to the particularity of one-time lead wire connection, so that the situation that manual restoration cannot be performed after breaking can occur.

It is therefore desirable to provide an insulating bolt that facilitates pre-testing to electrically isolate test equipment from peripheral equipment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prior art problem, provide a special type insulating bolt, the bolt progressively replacement cost special type insulating bolt of connecting equipment can reach and be kept apart by test equipment and high-pressure lead insulation. The utility model discloses a following technical scheme realizes:

according to one aspect of the utility model, a special insulating bolt is provided, which comprises a bolt body and an insulating mechanism; the bolt body comprises a screw and two conductive nuts, the two conductive nuts are arranged at two ends of the insulating mechanism, and a flat gasket is arranged between the conductive nuts and the insulating mechanism.

The insulation mechanism comprises two insulation nuts and an insulation layer wrapped on the outer surface of the screw rod, and the two insulation nuts are arranged at two ends of the insulation layer wrapped on the screw rod.

Preferably, on the basis of the scheme, external threads are arranged at two ends of the screw, and internal threads matched with the external threads of the screw are arranged inside the insulating nut and the conductive nut.

On the basis of the scheme, the insulating layer wrapped on the outer surface of the screw is preferably a polyvinyl chloride insulating pipe.

On the basis of the scheme, the insulating nut is preferably a polytetrafluoroethylene nut.

Through the installation the utility model discloses an insulating bolt can solve before the high pressure pretest the dismouting of relapseing that the disconnected high-pressure lead wire brought and cause the wire strand that looses, warp and the long scheduling problem of installation time. Only the bolts for connecting the equipment and the high-voltage lead wire need to be replaced by special insulating bolts, so that the high-voltage lead wire is insulated and isolated from the tested equipment. The utility model discloses both can reduce disconnected, the operation risk of reintroducing, can shorten the high altitude construction time again, saved manpower, material resources, improved preliminary examination work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a special insulating bolt according to an embodiment of the present invention;

the reference numerals in the schematic drawings illustrate: 1-conductive nut, 2-screw, 3-insulating nut, 4-insulating layer and 5-flat washer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. The drawings are in simplified form and employ non-precise ratios for the purpose of facilitating and distinctly facilitating the description of the embodiments of the invention. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1, the present invention provides a special insulating bolt, which includes a bolt body and an insulating mechanism, wherein the bolt body includes a screw rod 2 and two conductive nuts 1. Two conductive nuts are arranged at two ends of the insulating mechanism, and the insulating mechanism is fastened by screwing the conductive nuts 1. And a flat washer 5 for reducing the pressure stress of the pressure-bearing surface is arranged between the conductive nut 1 and the insulating mechanism.

The insulating mechanism includes two polytetrafluoroethylene insulation nuts 3 and the insulating layer 4 of parcel at screw rod 2 surface, and in this embodiment, insulating layer 4 is the polyvinyl chloride insulating tube, and its length can be adjusted according to actual need. Two insulating nuts 3 are arranged at two ends of an insulating layer 4 wrapped on the screw rod 2, and the insulating layer 4 is fastened by screwing the insulating nuts 3.

External threads are arranged at two ends of the screw rod 2, and internal threads matched with the external threads of the screw rod 2 are arranged inside the insulating nut 3 and the conductive nut 1.

When the test device is used, the bolts connected between the equipment and the high-voltage lead are sequentially replaced by the special insulating bolts, and practice proves that compared with a test result obtained by disconnecting the high-voltage lead, test data obtained by installing the insulating bolts has smaller error and can be ignored. The utility model discloses a special type insulating bolt need not to demolish the high-pressure lead wire of equipment and can carry out the preventive test, and is simple and easy promptly, can guarantee again that the test result is accurate, has saved manpower, material resources, has reduced maintenance duration, has improved experimental work efficiency.

Finally, the method of the present application is only a preferred embodiment and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a special type insulating bolt which characterized in that: the bolt comprises a bolt body and an insulating mechanism; the bolt body comprises a screw rod (2) and two conductive nuts (1), the two conductive nuts (1) are arranged at two ends of an insulating mechanism, and a flat washer (5) is arranged between the conductive nuts (1) and the insulating mechanism;

the insulation mechanism comprises two insulation nuts (3) and an insulation layer (4) wrapped on the outer surface of the screw rod (2), and the two insulation nuts (3) are arranged at two ends of the insulation layer (4) wrapped on the screw rod (2).

2. The special insulating bolt of claim 1, wherein: the screw rod (2) both ends are provided with the external screw thread, insulating nut (3) with conductive nut (1) inside be provided with screw rod (2) external screw thread assorted internal thread.

3. The special insulating bolt of claim 1, wherein: the insulating layer (4) wrapped on the outer surface of the screw rod (2) is a polyvinyl chloride insulating pipe.

4. The special insulating bolt of claim 1, wherein: the insulating nut (3) is a polytetrafluoroethylene nut.