Inorganic gel-steel prestressed composite pipe

Abstract

An inorganic gel-steel prestress composite pipe solves the problem that the existing composite pipe is poor in tensile strength, bending resistance and impact resistance. The composite pipe structurally comprises an inner metal pipe, an outer metal pipe and flanges arranged at two ends of the inner metal pipe and the outer metal pipe. A gap between the inner metal pipe wall and the outer metal pipe wall is filled with inorganic gel. The composite pipe further structurally comprises flanges connected with the pipe ends of the inner metal pipe and the outer metal pipe and prestress ribs, and the prestress ribs and the flanges form a prestress adjusting mechanism through a locking part. The composite pipe has the advantages of being convenient to install, light in weight, bending-resistant, pressure-resistant, good in impact resistance and deformation resistance, good in inflaming retarding and anti-static performance and capable of being widely applied to the fields of exploitation and conveying of coal mines, oil and gas and the like.

Description

technical field [0001] The invention relates to a transportation pipeline used in inflammable and explosive places such as underground coal mines, in particular to an inorganic gel-steel prestressed composite pipe. Background technique [0002] Many fields such as coal mines, oil and gas extraction and transportation require pipes of different diameters to transport gases, liquids and fluidized solids. Chemical properties (such as flame retardant, antistatic, corrosion resistance). [0003] Existing metal pipes are easily corroded in humid environments and lose their use value, and ordinary metal pipes have thick walls and heavy weights under the condition of ensuring mechanical indicators, which greatly increases the difficulty of installation, which makes it advocated to use metal structures as the main body The implementation of the technical route has encountered great difficulties, especially the use of large-diameter pipelines in coal mines. [0004] The Chinese pate...

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Problems solved by technology

[0006] The present invention aims to solve the problems of weak tensile, deformation and impact resistance of existing composite pipes, and designs an inorganic gel-steel prestressed composite pipe. The thin-walled pipe with spiral ribs processed by welding process and the cavity formed by the inner and outer metal pipes and flanges are filled with inorganic gel, and the flanges are also connected with prestressed tendons to improve the tensile and tensile strength of the composite pipe. Deformation, impact resistance

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