Foam sleeve device

Abstract

The invention discloses a foaming sleeve device and belongs to the field of repairing of pipeline hear preservation layers. The foaming sleeve device comprises a sleeve pipe body, a feed inlet, an exhaust hole and at least two positioning modules. Each positioning module comprises an elastic element, a telescopic rod, an elastic element support and a sealing rubber pad. The feed inlet and the exhaust hole are located in through holes in the sleeve pipe body. The positioning modules are distributed at the two ends of the sleeve pipe body separately. The sealing rubber pad of each positioning module makes contact with the outer surface of an oil-gas pipeline. The sealing rubber pads are connected with the elastic element supports of the positioning modules, and the elastic element supports are connected with the elastic elements of the positioning modules. As the oil-gas pipeline is tightly sleeved with the sleeve pipe body, the positioning modules are arranged, and the sealing rubber pads of the positioning modules make contact with the outer surface of the oil-gas pipeline, the airtightness of a foaming cavity is improved, the foaming process can be conducted in the foaming cavitywith good airtightness, and the quality of the repaired heat preservation layers can meet the standard requirements.

Description

technical field [0001] The invention relates to the technical field of pipe insulation layer repair, in particular to a foam sleeve device. Background technique [0002] In order to prevent oil and gas pipelines from bursting due to temperature and other reasons, it is necessary to add an insulation layer to the outer surface of the oil and gas pipeline. With the operation of oil and gas pipelines for many years, the insulation layer of oil and gas pipelines will also fail. Therefore, it is necessary to repair the insulation layer in time after the insulation layer of oil and gas pipelines fails. [0003] In practical applications, the insulation layer can be repaired by using the method of on-site foaming of the mold. For example, the mold and two waterproof caps can be placed on the oil and gas pipeline, and the two ends of the mold are respectively fastened on the waterproof cap, and the inner surface of the waterproof cap, the inner surface of the mold and the outer sur...

AI Technical Summary

Problems solved by technology

[0005] The existing mold is used to repair the insulation layer. Due to the poor sealing of the contact part between the mold and the waterproof cap and the contact part between the waterproof cap and the oil and gas pipeline, the pressure in the cavity formed by the mold and the oil and gas pipeline cannot be kept constant, resulting in foaming The porosity, foam strength and flatness of the formed insulation layer did not meet the preset indicators, and the quality of the repaired insulation layer could not meet the requirements of the standard specification

Images