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Stress test device and method for measuring overhead transmission conductor strand

An overhead transmission wire, stress test technology, applied in the measurement device, the use of a stable bending force to test the strength of the material, and the use of a stable tension/pressure to test the strength of the material, etc. The influence of tensile stress and dynamic bending stress is unclear, etc.

Pending Publication Date: 2022-06-28
CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD +1
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Problems solved by technology

[0003] At present, most of the wire strand stress test benches in China are used to test the fatigue stress of transmission wires. Generally, there are no comprehensive considerations such as vibration angle and drape angle in the test device, and the force of the wire during the vibration process is relatively complicated. The stress distribution is uneven, and there is currently no better test model and method to measure its internal stress, and the influence of the tensile stress and dynamic bending stress on the wire is relatively unclear

Method used

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  • Stress test device and method for measuring overhead transmission conductor strand
  • Stress test device and method for measuring overhead transmission conductor strand
  • Stress test device and method for measuring overhead transmission conductor strand

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Embodiment Construction

[0063] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0064] like Figure 1-8 As shown in the figure, the present invention is a stress test device for measuring the strands of overhead transmission wires. The stress test device includes a fixed tightening system 1, a load application system 2, a curvature application system 3, an overhead transmission wire to be tested 4 and a sensing test. System 5; the fixing and tightening system 1 includes a wire fixing fixture 101, a test device structural frame 102, a wire support support 103, and a wire clamp 104; the load application system 2 includes a shaking table head 201, a shaking table 202, and a shaking table support The base 203, the wire connector 204, the tension sensor 205, the tension machine connector 206, the first tension machine 207; the curvature applying system 3 includes the second tension machine 301, the co...

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Abstract

The invention relates to a stress test device and method for measuring an overhead transmission conductor strand, establishes a more comprehensive transmission conductor stress test platform, can better simulate the vibration state of a transmission conductor under the actual working condition in a transmission line project, and provides technical support for safe operation and maintenance of a transmission line. The method can accurately provide different types of stress of the strand under different working conditions, including the influence of stretching, bending and the like on the stress of the strand, judges the damage problem of the overhead transmission conductor, and provides powerful support for research on the damage mechanism of the transmission conductor. The service life of the overhead transmission conductor is prolonged, strand breakage accidents are avoided to the greatest extent, and the device is convenient to use and good in effect and has good social and economic benefits.

Description

technical field [0001] The invention relates to a test device, a test model and a method for measuring the stress of an overhead transmission wire strand. Background technique [0002] In transmission line engineering, the safe operation of overhead transmission lines has always been widely concerned by researchers. The strands of overhead transmission wires often vibrate due to natural reasons, causing the strands of conductors to break strands. It has been found that one of the reasons for strand breakage is that the strands of the wires are unevenly distributed due to the vibration of the breeze. Reduce the fatigue life of the wire and cause the strand to break. The safe operation and maintenance of transmission conductors is an important part of power grid construction. Therefore, it is necessary to study the stress distribution of transmission conductor strands in order to solve the problem of strand damage mechanism in transmission line engineering. [0003] At prese...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/20G01N3/02
CPCG01N3/08G01N3/20G01N3/02G01N2203/0003G01N2203/0017G01N2203/0023G01N2203/0212G01N2203/0236G01N2203/0258G01N2203/028G01N2203/04G01N2203/0682
Inventor 赵国良蔡高原丁俊毅李兵兵李朝波魏庆海郑志忠
Owner CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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