Energy-saving bolt-type strain clamp

Abstract

The invention discloses an energy-saving bolt-type strain clamp, which comprises a clamp body, a U-shaped screw and a pressing block. The energy-saving bolt-type strain clamp is characterized in that: a wire slot is formed in the clamp body; a pressing slot along the clamp body penetrates through a lead; the pressing block is locked and fixed on the clamp body through the U-shaped screw above the lead; the clamp body is made of cast steel or cast iron; the U-shaped screw is made of austenitic steel; the pressing block is made of the austenitic steel or aluminum alloy; the U-shaped screw is made of the austenitic steel; and the austenitic steel comprises 21.5 to 25 weight percent of manganese, 3 to 5 weight percent of aluminum, 2 to 4 weight percent of chromium, 2 to 3 weight percent of vanadium, 0.14 to 0.2 weight percent of carbon, 0.2 to 0.3 weight percent of lanthanum and cerium composite rare earth, 0.5 to 0.8 weight percent of silicon, less than 0.05 weight percent of sulfur, less than 0.03 weight percent of nitrogen, less than 0.04 weight percent of phosphorus, and the balance of the cast steel. Each index of the strain clamp manufactured by the production mode meets related specifications of electrical power fittings GB / T2315-2000 'Nominal Failing Load Series Dimensions and Coupling Mode for Electric Power Fittings'. The strain clamp is low in energy consumption, which is only 10 to 20 percent of that of the conventional strain clamp; and the strain clamp is high in economical efficiency, and strong in popularization value.

Description

technical field [0001] The invention relates to an electric power fitting, in particular to an energy-saving bolt-type strain clamp. Background technique [0002] As early as the 1940s, foreign countries began to conduct experiments and researches on fittings. The University of Manchester in the United Kingdom and the Ohio Brass Company in the United States conducted energy consumption comparison tests on ferromagnetic fittings and aluminum alloy fittings, and found that ferromagnetic fittings in the circuit Fittings are equivalent to a light bulb that is turned on day and night, and the annual consumption is astonishing, while aluminum alloy fittings basically have no energy consumption. In our country, it was not until the 1970s that the foreign party proposed the use of energy-saving fittings in the technical requirements of foreign-related power lines, which attracted the attention of relevant state departments. The National Electric Power Construction Research Institut...

AI Technical Summary

Problems solved by technology

[0008] 2. Eddy current loss

The relative magnetic permeability of ferromagnetic fittings is high, and the induced electromotive force generated is 250 to 1000 times larger than that of Fe-Mn austenitic steel fittings, so the eddy current loss generated is large

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