Induction coil for high-frequency welding of large-diameter pipeline

Abstract

The invention relates to welding devices in the refrigeration industry, in particular to an induction coil for high-frequency welding of a large-diameter pipeline. The induction coil comprises a copper pipe, a copper belt and an insulating belt. Firstly, the copper belt is wound around a mould; secondly, the copper pipe is wound around the copper belt; and then, full welding is conducted on contact portions of the copper pipe and the copper belt. The insulating belt is used for being wound around the copper pipe and the copper belt which are welded. The diameter of the copper pipe ranges from 6.5 mm to 12.5 mm, and a through cooling water pipe is arranged in the copper pipe. The thickness of the copper belt ranges from 2 mm to 3 mm, and the width of the copper belt ranges from 15 mm to 30 mm. According to the induction coil for high-frequency welding of the large-diameter pipeline, the copper pipe and the copper belt are welded, uniformity of the welding temperature can be effectively improved, and the welding quality and the service life are ensured. According to the induction coil, the through cooling water pipe is arranged in the copper pipe.

Description

technical field [0001] The invention relates to welding equipment in the refrigeration industry, more specifically, to an induction coil for high-frequency welding of large-diameter pipelines. Background technique [0002] In the refrigeration industry, the welding of large-diameter pipe fittings is also relatively common. It has been proved by practice that the use of high-frequency brazing is a stable and efficient method. Strict requirements on welding temperature and uniform temperature. Due to the divergence characteristic of the magnetic field of the existing planar induction coil, the uniform temperature effect cannot be achieved, and the welding effect is not ideal. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art and provide an induction coil for high-frequency welding of large-diameter pipelines. [0004] In order to solve the problems of the technologies described above, the present inventi...

AI Technical Summary

Problems solved by technology

[0002] In the refrigeration industry, the welding of large-diameter pipe fittings is also relatively common. It has been proved by practice that the use of high-frequency brazing is a stable and efficient method. Strict requirements on welding temperature and uniform temperature

Due to the divergent characteristics of the magnetic field of the existing planar induction coil, the temperature uniformity effect cannot be achieved, and the welding effect is not ideal

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