Polyethylene pipeline welding equipment

Abstract

The invention discloses polyethylene pipeline welding equipment. The polyethylene pipeline welding equipment comprises a positioning base and a connecting rod, wherein the positioning base is used foraxially limiting an inner connecting pipe and an inner side pipeline of a polyethylene pipeline; the connecting rod is fixed to the center of the positioning base; the connecting rod drives the positioning base to move along the radial direction of a double-layer pipeline; the lower end of the positioning base is provided with a clamping jaw for clamping and positioning the inner connecting pipe;at least two arc-shaped plates which are movably connected are arranged on the edge of the positioning base; an acting sleeve for driving the arc-shaped plate to move towards the lower end of the inner connecting pipe is arranged on the connecting rod; a hot melt machine is arranged at the bottom of the arc-shaped plate; and after the arc-shaped plate moves downwards, the hot melt machine acts onthe joint between the inner connecting pipe and the inner-side pipeline and heats the joint between the inner connecting pipe and the inner-side pipeline. Through the adoption of the polyethylene pipeline welding equipment provided by the invention, the mounting difficulty of the inner connecting pipe is lowered, and the fixing effect of the inner-side pipeline and the inner connecting pipe is ensured.

Description

technical field [0001] The invention belongs to the field of double-layer pipe fittings, in particular to polyethylene pipe welding equipment. Background technique [0002] In the field of double-layer pipe fittings, polyethylene pipe fittings are set to be double-layered inside and outside. The inner pipe is used for medium transportation, and the isolation between the inner pipe and the outer pipe forms a closed cavity. On the one hand, it can be used for protection. On the one hand, the detection gas can be filled in the cavity during detection, and whether the oil pipeline leaks can be detected by monitoring the pressure change of the gas in the closed cavity. In order to reduce losses caused by downtime, double-layer pipe fittings often need to be drilled under pressure for construction work, and the outer pipe is opened with a punching tool after the outer flange is installed and fixed. However, the inner connecting pipe fixed to the inner pipe cannot be installed and...

AI Technical Summary

Problems solved by technology

However, the inner connecting pipe fixed with the inner pipe cannot be installed and fixed by the existing conventional methods because the outer flange has a relatively large restriction on the outer space of the inner flange, and the inner space of the inner connecting pipe is also limited. It brings great difficulty to the construction process, and it is difficult to guarantee the connection and fixing effect between the inner pipe and the inner connecting pipe

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