Carbon-fiber-based reinforcing ring of pipe penetrating through active fault area

Abstract

The invention relates to a carbon-fiber-based reinforcing ring of a pipe penetrating through an active fault area. The carbon-fiber-based reinforcing ring penetrating through the active fault area is characterized by being basically and structurally divided into four layers, each layer is made of high-modulus carbon fiber cloth, when calculated from inside to outside, the texture of the innermost layer of fiber cloth and the pipe form an 90-degree angle in the axial direction; the texture of the second layer of carbon fiber cloth and the pipe form a 45-degree angle in the axial direction; the texture of the third layer of carbon fiber cloth and the pipe form a 45-degree angle in the axial direction, and the outermost layer of carbon fiber cloth and the pipe form a 0-degree angle in the axial direction. The number of layers of the carbon fiber cloth is increased according to the order so as to meet higher strength requirements. The surface of a pipe anticorrosion layer is subjected to abrasive blasting treatment, and hot melt adhesive is utilized to bond the innermost fiber cloth and the pipe wall. The outer layers of fiber cloth are wound on the pipe sequentially, and the hot melt adhesive is utilized to bond each layer of the carbon fiber cloth. By means of the carbon-fiber-based reinforcing ring, the pipe strength and bending-resistant capacity can be enhanced, adverse influences, on the pipe, of an active fault are reduced, stress concentration is reduced, pipe corrosion is relieved, and the pipe can penetrate through the active fault area safely.

Description

technical field [0001] The invention relates to a pipeline reinforcement ring, in particular to a carbon fiber-based pipeline reinforcement ring crossing an active fault zone. Background technique [0002] In my country's energy consumption structure, oil and natural gas account for a large proportion, which is of great significance to national economic development and national energy security. With the increase in the demand for oil and natural gas resources, the necessity of developing my country's existing oil and gas reservoirs and importing oil and natural gas from abroad is becoming more and more obvious. Pipeline transportation has the advantages of large transportation volume, small land occupation, safety, reliability, and strong continuity. Ideal for oil and gas transportation methods. However, in the process of pipeline route selection and construction, it is often unavoidable to pass through active fault areas, which has a negative impact on pipeline safety: crus...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that excessive bending deformation may occur in pipelines crossing active fault areas, resulting in excessive stress and strain in the pipelines, the purpose of the present invention is to provide a light weight, corrosion-resistant, high-strength pipeline that can safely pass through active fault areas. Pipe reinforcement ring

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