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Wire wear performance test system and method

A wear performance and testing system technology, applied in the direction of testing wear resistance, measuring device, strength characteristics, etc., can solve the problem of lack of effective methods for wear testing of large span and ultra-high strength aluminum alloy wires, and achieve the effect of accurate wear test results

Pending Publication Date: 2021-03-05
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the lack of an effective method for wear testing of long-span ultra-high-strength aluminum alloy wires in the prior art, the present invention provides a wire wear performance testing system and method

Method used

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  • Wire wear performance test system and method
  • Wire wear performance test system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] This embodiment provides a wire wear performance testing system, the system structure diagram is as follows figure 1 shown.

[0066]The long-span ultra-high-strength aluminum alloy wire wear test system consists of six parts: tensioning system, support and anchor system, excitation system, temperature control system, data acquisition system and intermediate ultra-high-strength aluminum alloy wire. The tensioning system applies tension to the ultra-high-strength aluminum alloy wire through the hydraulic loading device, and the force sensor measures the tension value of the test wire; the anchoring system consists of a bracket and an anchoring end, which is used to anchor the wire after the tension is applied; vibration The system consists of an electromagnetic vibrating table and a head and is connected to an ultra-high-strength aluminum alloy wire through a chuck. The vibrating table is a hydraulic vibrating table and is equipped with a vibration closed-loop control sys...

Embodiment 2

[0071] This embodiment provides an installation method of a wire wear performance testing system.

[0072] The installation steps of the large-span ultra-high-strength aluminum alloy wire wear test system can be divided into 9 installation steps. The first step is to take the ultra-high-strength aluminum alloy wire sample. The wire sample should choose a line segment without looseness and damage. During the cutting and preparation process, care should be taken not to damage the sample (the length of the wire should be cut to 39m and the length of the anchor head should not be included. ); Before the test piece is cut from the spool, at least two strong clamps shall be provided at each end of the test piece to prevent movement between the wire layers. The second step is to make the anchor head. The two ends of the wire are put into the anchor head and the rear end is bent into a lantern net shape, and then the anchor heads at both ends are hung on the iron frame and cast with ...

Embodiment 3

[0074] This embodiment provides a testing method for wire wear performance.

[0075] In the wear test of the large-span ultra-high-strength aluminum alloy conductor, first support the end of the conductor (the conductor length is 35m) with a suspension wire and fix the conductor end with an anchor; then use the loading system on the right side of the conductor to the other end of the conductor After applying 25% RTS tension to the wire and fixing the anchor at the end. Vibration debugging of the entire system is required before the wear test of the ultra-high-strength aluminum alloy wire. First, debug the temperature of the temperature control box. First, preheat the temperature control box to see if the insulation system can maintain a constant temperature; then use the excitation device to excite the test wire at an appropriate frequency to see if the wire Whether the vibration intensity can be kept stable. After the debugging of the whole system is completed, the wear tes...

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Abstract

The invention discloses a wire wear performance test system and method. The wire wear performance test system comprises two anchoring devices, a tensioning device, a vibration excitation device connected with a wire, a temperature control box and a data acquisition device, wherein the temperature control box is sleeved at the wire clamp joint of the wire; the two ends of the wire are fixed throughthe two anchoring devices, and the tensioning device is arranged between any end of the wire and the anchoring device; and the data acquisition device is respectively connected with the to-be-testedpart, the tensioning device, the vibration excitation device and the temperature control box. The system provides a line loss simulation system for the wire for the first time, and can realize the direct test of the wear performance of the wire under the condition close to the actual working condition. According to the system provided by the scheme, the tensioning device, the vibration excitationdevice and the temperature control device are arranged, so that the actual operation environment of the wire is provided, and the wear test result of the wire is more accurate.

Description

technical field [0001] The invention relates to the technical field of power grid disaster prevention, in particular to a wire wear performance testing system and method. Background technique [0002] At present, the long-span ultra-high-strength aluminum alloy wire is used as the carrier of power transmission, but in the actual working environment, the wear of the large-span ultra-high-strength aluminum alloy wire under the coupling effect of the force field generated by the breeze vibration and the temperature field generated by the current can cause the wire to wear Cracks are generated at the place, which in turn causes fatigue damage to the wire, and the degree of fatigue damage is more serious than that of the large-span ultra-high-strength aluminum alloy wire under the condition of only considering the breeze vibration. [0003] The fretting wear of overhead power transmission conductors mainly occurs between the strands of the conductors, between the conductors and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/04G01N3/56
CPCG01N3/02G01N3/04G01N3/56
Inventor 张雪松刘胜春周立宪牛海军齐翼李冬青顾建尹泉孙宝东孙娜
Owner CHINA ELECTRIC POWER RES INST
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