A flow-through bending creep test device suitable for electrical busbars
A bending creep and testing device technology, which is applied in the direction of applying a stable bending force to test the strength of materials, and achieves the effects of simple operation, accurate data and high reliability
Active Publication Date: 2021-01-19
STATE GRID CORP OF CHINA +4
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Problems solved by technology
However, the traditional creep test device cannot carry out the creep test of the electrical busbar under the flow-through condition. Therefore, the use of the through-current creep test device to simulate the creep behavior of the electrical busbar in the actual working condition will be beneficial to relevant Improvement and Promotion of Busbar Materials
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[0015] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Such as figure 1 As shown, a flow-through bending creep test device suitable for electrical busbars includes a support frame, a driving mechanism, a pressure rod 10, a high-temperature environment box 6, a test piece 16, a test piece fixing mechanism, and a test piece monitoring and control mechanism. The support frame is composed of a base 8, a column 5 and a beam 4. The driving mechanism is set on the top surface of the beam. The specimen fixing mechanism includes an upper clamp and a lower clamp. The fixtures are connected, the high-temperature environment box is set at the center of the top of the base, and the test piece is horizontally set in the high-temperature environment box through the lower fixture. The test piece monitoring and control mechanism includes a computer 14, a load senso...
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The invention provides a device suitable for testing the bending creep of busbar with electric current. The device comprises a support frame, a driving mechanism, a pressure rod, a high-temperature chamber, a specimen fixing mechanism, and a specimen monitoring and control mechanism. The support frame consists of the base, columns and the beam structure. The driving mechanism is arranged on the top surface of beam structure. The specimen fixing mechanism consists of an upper and a lower clamp. The pressure rod has the upper end connected with the driving mechanism, and the bottom end connectedwith the upper clamp through the center of the beam structure. The high-temperature chamber is in the central part of the base. The specimen is horizontally fixed by the lower clamp in the high-temperature chamber. The specimen monitoring and control mechanism includes a computer, a load sensor, a displacement sensor and a temperature sensor. The computer displays the real-time quantity of load,current, temperature, and the curves of displacement and deformation test. The invention is of reasonable structural design and provides the likeliest simulation of the bending creep of the specimen in working condition.
Description
technical field [0001] The invention belongs to the technical field of mechanical property detection of electrical busbars, and in particular relates to a flow-through bending creep test device suitable for electrical busbars. Background technique [0002] Electrical busbar is the main medium for transmitting electric energy in electrical equipment such as high and low voltage electrical appliances, power distribution equipment, switch contacts and bus ducts, as well as ultra-high current equipment such as electrochemical plating and metal smelting. In the working state, a large current needs to pass through the busbar, resulting in a temperature rise, which makes the lap joint prone to creep under the action of thermal expansion and compressive stress. When these effects are relaxed, the lap joints will relax, which will increase the contact resistance and even lead to serious consequences of joint failure. Therefore, for electrical busbars, creep under flow and high tempe...
Claims
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IPC IPC(8): G01N3/20
CPCG01N3/20
Inventor 王利民何卫邓静伟张宇汤超楼平胡钱巍姚辉
Owner STATE GRID CORP OF CHINA