Cutting device of annular protruding flanging at welding line inside polyethylene pipe

Abstract

The invention relates to the technical field of welding tools, and provides a cutting device of annular protruding flanging at a welding line inside a polyethylene pipe. The cutting device comprises a center rod, elastic centering supports, a fixing base, a connecting base, a cutting assembly and an elastic supporting base; the at least two elastic centering supports are distributed on the outer side of the center rod at intervals in the left-right direction, the fixing base and the elastic supporting base are arranged between two elastic centering supports, one end of the fixing base and the center rod are fixed together, the other end of the fixing base and one end of the connecting base are hinged together, and the other end of the connecting base is fixedly provided with the cutting assembly capable of conducting lossless operation on the annular protruding flanging at the welding line inside the polyethylene pipe. By means of the cutting device, lossless operation on the annular protruding flanging at the welding line inside the polyethylene pipe can be achieved through the elastic centering supports, the cutting assembly and the elastic supporting base, the cutting position of the cutting device is accurate, the pipe is not prone to being damaged, and smooth implementation of repairing engineering construction of the HDPE pipe penetrating a steel pipe.

Description

technical field [0001] The invention relates to the technical field of welding tools for polyethylene pipes, and relates to a device for removing ring-shaped raised flanging at inner welding seams of polyethylene pipes. Background technique [0002] It is the abbreviation of high-density polyethylene, and HDPE pipe is also called polyethylene pipe. During the repair construction of HDPE pipe inserted into the steel pipe, a ring-shaped raised flange will be formed at the inner weld of the HDPE pipe when it is welded, which is about 5mm to 15mm higher than the inner surface of the pipe. Since oil pipelines in oil fields will contain sediment and some of them will also accumulate wax, the owner is worried that during the operation of the HDPE lined pipeline, sediment and oil wax will easily stick and accumulate at the weld of the HDPE pipe, which will affect the quality of the pipeline. The pipeline is functioning normally. Therefore, the owner proposes to remove the ring-sha...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a device for removing the ring-shaped raised flanging at the inner weld of polyethylene pipe, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the ring-shaped flange at the inner weld existing in the existing polyethylene pipe welding. There is no suitable tool to realize the problem of removing the weld without damaging the pipe, and it can further solve the problem of easy sticking and accumulation of sediment and oil wax, which affects the normal operation of the pipeline

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