Foam insulated pipe plugging device and plugging method

Abstract

The invention discloses a foam insulated pipe plugging device and plugging method. The plugging device structurally comprises an adjustor and a plugging device, wherein the adjustor is mainly a supporting plate which is sleeved on the outer wall of an inner pipe of an insulated pipe and leans against the end portion of an opening of an outer pipe, and two side faces of the supporting plate are respectively provided with an outer pipe adjusting bolt and an inner pipe adjusting bolt which are respectively used for pressing and adjusting in a welding mode. The plugging device mainly comprises the supporting plate, a pressing plate, a pressing bolt and a seal rubber pipe, wherein the plugging device is tightly sleeved between the inner pipe and the outer pipe. The foam insulated pipe plugging device plays a seal function on polyurethane foam materials, meanwhile can adjust concentricity of the inner pipe and the outer pipe, and is good in plugging effect, convenient to assemble and disassemble, capable of greatly reducing labor intensity of workers, and capable of effectively improving product quality and labor efficiency.

Description

technical field [0001] The invention relates to the plugging construction of a foam insulation pipe in which the inner pipe is a steel pipe, the outer protection pipe is a steel pipe, and polyurethane foam is used for insulation between the inner and outer pipes, specifically the foam insulation pipe plugging device and its plugging method. Background technique [0002] At present, the internal sizing plugging device of the pipe end of the PE outer sheath foam insulation pipe is composed of a positioning plate and a locking bolt. Insulated pipe with polyurethane foam. Its working principle is: install the inner sizing occluder in the annular space between the PE pipe and the end of the steel pipe with a sledgehammer along the axial direction of the steel pipe, and lock the occluder with locking bolts. [0003] When the gap between the inner diameter of the occluder and the outer wall of the inner tube is small, the installation of the occluder is more difficult, especially ...

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Problems solved by technology

[0006] Steel pipe sleeve steel pipe polyurethane foam insulation pipe, the distance between the foam insulation layer at both ends and the end of the outer pipe is required to be 200mm and 400mm, and the head of the foam insulation layer is inside the outer pipe, so the above-mentioned internal sizing plugging device at the pipe end is not suitable for internal and external The pipes are all steel foam insulation pipes

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