Device for testing high-temperature load-carrying properties of aluminum and aluminum alloy electric power apparatuses of power transmission line

Abstract

The invention discloses a device for testing high-temperature load-carrying properties of aluminum and aluminum alloy electric power apparatuses of a power transmission line, which comprises a control computer, a high-temperature box, an electric-hydraulic servo tensile testing machine, a load maintaining control system and a sample special fixture, wherein the high-temperature box is controlled by a temperature controller and arranged between an upper chuck and a lower chuck of the tensile testing machine; the special fixture comprises an upper pull rod and a lower pull rod, the upper end ofthe upper pull rod is provided with a support seat connected with the upper chuck of the tensile testing machine, the lower end of the upper pull rod penetrates through the high-temperature box, the end part of the upper pull rod is provided with a sample connecting member, the lower end of the lower pull rod is connected with the lower chuck of the tensile testing machine, the upper end of the lower pull rod penetrates into the high-temperature box and the top of the lower pull rod is provided with the sample connecting head. The device disclosed by the invention can meet that the sample is subject to long-time loading test at high temperature and the actual operation environment of power appliances is stimulated so as to obtain the strength loss rate of the power appliances under the condition of high-temperature loading, and provides relevant test data and design basis for the high-temperature resistant power appliances.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a device for testing the high-temperature load-bearing performance of electric equipment, in particular to a device for testing the high-temperature load-bearing performance of aluminum and aluminum alloy power equipment for transmission lines. Background technique [0002] At present, the destructive strength test of aluminum and aluminum alloy power equipment in the relevant national standards is carried out at room temperature, but with the continuous increase of transmission capacity, the operating temperature of the wire and its supporting power equipment is also increasing. In the design standards of aluminum and aluminum alloy equipment, its strength is checked according to the maximum operating temperature of 70°C, and when the equipment is matched with heat-resistant wires, its operating temperature can reach 200°C, which is close to that of aluminum and aluminum alloy. ...

AI Technical Summary

Problems solved by technology

[0003] Existing domestic and foreign testing machines for strength testing of transmission line aluminum and aluminum alloy power equipment are all carried out at room temperature without high-temperature heating devices. Although some testing machines have a load holding function, their load holding time is relatively short and cannot Maintain a high load for a long time (over 400 hours)

Therefore, the existing test devices cannot truly reflect the damage strength of electrical equipment under actual operating conditions.

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