CN105067888B - Loop resistance test lightweight compound inslation bar safe to use - Google Patents

Abstract

The invention discloses a light-weight composite insulating rod for testing loop resistance with safety. Transition joints are set between the insulating rods; the current wires for testing are directly poured inside the glass fiber epoxy resin composite insulating rods to form current-conducting copper conductors, and the copper conductors at both ends of each insulating rod pass through Threaded joint connection; the voltage wire for testing passes through the middle of the insulating rod, the current wire is connected to the wiring clamp at the top of the first insulating rod, the current wire and voltage wire are drawn out from the tail joint to connect with the loop resistance testing instrument, and the voltage wire is connected to the loop resistance testing instrument from the tail joint Press in the side slots on the The invention has reasonable structure, good operation stability of the insulating rod and safe use.

Description

Testing Lightweight Composite Insulated Rods Using Safe Loop Resistance

This application is a divisional application with application number: 201310210844.4, application date: 2013.5.31, and name "Lightweight Composite Insulating Rod for Loop Resistance Test".

technical field

The invention relates to a lightweight composite insulating rod for testing loop resistance.

Background technique

High voltage test is an important part of electrical test, and also a key part to ensure the safe and effective operation of power system. During the high-voltage test, the safety of test personnel and equipment is the top priority, especially personal safety. The traditional loop resistance test insulation rod and test line adopt the external lap joint mode. In this method, due to the heavy weight of the insulating rod and the test line, and the natural inclination of the test line, a large horizontal pulling force will be generated on the insulating rod. In addition, the wind traction also has a great influence on the stability of the insulating rod. The imperfection of the design and process of the insulating rod for traditional loop resistance testing leads to safety hazards in the high-voltage test process. In recent years, there have been many personal arc burn accidents caused by this. In addition, in the actual use of power system production sites, it often occurs that the oxide layer on the surface of high-altitude equipment is thick and needs to be rubbed to remove the oxide layer. The contact surface of the currently used wiring pliers is relatively smooth, the friction is too small, and it is inconvenient to use. In the actual production site, operators also feel that the operation is inconvenient, so it is necessary to improve the traditional loop resistance test insulation rod.

Contents of the invention

The object of the present invention is to provide a lightweight composite insulating rod with reasonable structure, good operational stability and safe circuit resistance test.

Technical solution of the present invention is:

A light-weight composite insulating rod for loop resistance testing, characterized in that: sequentially comprising the first section containing wiring pliers, multiple intermediate insulating rods, the last insulating bar and a tail joint; between the first section and the intermediate insulating rod Transition joints are set between them; the test current wires are directly poured inside the glass fiber epoxy resin composite insulation rod to form a current-conducting copper conductor, and the current-conducting copper conductors in each insulating rod are connected by copper threaded joints at both ends. ;The test voltage wire passes through the middle of the insulating rod, the current wire is connected to the wiring clamp at the top of the first section of the insulating rod, the current wire and the voltage wire are drawn from the tail joint to connect with the loop resistance testing instrument, and the voltage wire is connected to the side of the tail joint Wire slots are pressed in.

The transition joint is provided with a terminal to connect the current wire with the terminal of the clamp, and the transition joint is provided with a hole for the voltage line to pass through.

A protective sleeve is provided at the bottom of the insulating pole at the end.

The invention has a reasonable structure and reduces the influence of the insulating rod on the traction force of the test line and the wind force. The current wire for testing is directly poured inside the insulating rod to form a conductive body; the voltage wire for testing passes through the middle of the insulating rod and is in the same direction as the insulating rod, which reduces the horizontal tension of the testing wire on the insulating rod and the impact of wind on the insulating rod. Stability effects; reduced overall weight of insulating rod and test wire. Since the diversion copper conductor is poured inside the insulating rod, the surface of the diversion copper conductor is not wrapped with an insulating layer, and the outer wall of the insulating rod realizes external insulation; the test line is vertical and not inclined, which reduces the length of the test line required for the test, thereby reducing insulation. Total weight of rod and test wire.

By pouring the test line on the inner wall of the insulating rod, the traction force of the test line and the wind on the insulating rod is reduced, and the overall weight of the insulating rod and the test line during the test is reduced to a certain extent, so as to improve the stability of the insulating rod and protect the user Personal safety, to meet the actual application requirements of the high-voltage test site.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of a transition joint.

Fig. 3 is a structural schematic diagram of the insulating rod of the middle section.

Fig. 4 is a structural schematic diagram of the last insulating rod.

Fig. 5 is a schematic diagram of the structure of the tail joint.

detailed description

A lightweight composite insulating rod for loop resistance testing, which sequentially includes a first section 2 containing wiring clamps 1, a multi-section intermediate section insulating bar 3, the last section insulating bar 4 and a tail joint 5; between the first section and the middle section insulating bar A transition joint 6 is set between them; the test current wire 7 is directly poured inside the glass fiber epoxy resin composite insulating rod 14 to form a current-conducting copper conductor, and the copper conducting copper conductor at each section of the insulating rod passes through the copper at both ends. The threaded joint 8 is connected; the voltage wire 9 for testing passes through the middle of the insulating rod, the current wire 7 is connected to the wiring clamp at the top of the first section of the insulating rod, and the current wire 7 and the voltage wire 9 are drawn out from the tail joint to connect with the loop resistance testing instrument 10 , and the voltage line is pressed in from the side wire groove 11 on the tail joint, and there is also a current line terminal 15 on the tail joint.

The transition joint is provided with a terminal 12 to connect the current wire with the terminal of the clamp, and the transition joint is provided with a hole 13 for the voltage wire to pass through.

There is a protective cover at the bottom of the last insulating rod. After the test voltage line is connected, the protective cover at the bottom of the last insulating rod is tightly covered to prevent the staff from touching the internal conduction copper conductor.

Claims (1)

1. a kind of loop resistance test lightweight compound inslation bar safe to use, it is characterized in that：Include the head containing jointing clamp successively Save insulating bar, most more piece middle node insulating bar, minor details insulation bar and pigtail connection；Head sections insulating bar and middle node insulating bar it Between transit joint is set；Test electricity consumption streamline is directly cast in inside glass epoxy resin compound inslation bar, is formed water conservancy diversion copper and is led Body, often connected between the water conservancy diversion copper conductor in section insulating bar by the copper nipple at its both ends；Test pressure-wire is from exhausted Pass through among edge bar, electric current line at the top of head section insulating bars with wiring clipper joint, electric current line, pressure-wire from pigtail connection draw with Circuit resistance tester device is connected, and pressure-wire is pressed into from the side wire casing on pigtail connection；The transit joint is provided with wiring Electric current line is connected by terminal with the terminals of jointing clamp, and transit joint passes through hole provided with pressure-wire；Minor details insulating bar bottom is set After having protective jacket, test voltage line to connect, the protective jacket of minor details insulating bar bottom is covered tightly, brushing up against inside to prevent staff leads Flow copper conductor.