Stainless steel casing pipe applied to local repair of pipeline

Abstract

The invention discloses a stainless steel casing pipe applied to local repair of a pipeline. The stainless steel casing pipe comprises a stainless steel pipe and an auxiliary silica gel ring arranged outside the stainless steel, wherein the stainless steel pipe is formed by rolling a first rectangular stainless steel plate; two clearances are formed in a direction parallel to a long side of the first rectangular stainless steel plate; buckles are welded on positions, which correspond to the clearances, on the other side of the first rectangular stainless steel plate; two ends of the clearances are rectangular; an inner side opening and an outer side opening are formed in each rectangle; each inner side opening is used for allowing the buckle to be buckled in each clearance; each outer side opening is used for allowing the buckle to be popped from the clearance when the pipeline exceeds the use range; the inner side of each clearance is of a one-way gear structure; each buckle comprises a gold-plated steel wire; each one-way gear and each gold-plated steel wire are connected to be used as a one-way opening; the one-way opening can only slide in one way, the stainless steel pipe does not retract after being stretched; the silica gel ring is arranged between the stainless steel pipe and the pipeline, is used as a liner and plays a role of sealing. The stainless steel casing pipe disclosed by the invention is low in price.

Description

technical field [0001] The invention relates to the technical field of partial repair of pipelines, in particular to a stainless steel casing applied to partial repair of pipelines. Background technique [0002] With the development of China's urbanization process, more and more people pay attention to pipeline problems. Due to the continuous increase of urban traffic pressure and the increase of excavation repair costs, trenchless repair has gradually become a new means of pipeline repair. Trenchless restoration can be divided into two categories: partial restoration and overall restoration according to the restoration scope. Overall repair usually refers to the method of repairing the entire section of pipe between two inspection wells, and the effect of overall repair is better. However, under normal circumstances, only partial pipeline defects such as cracks, infiltration, external leakage, tree root implantation, and joint damage do not need to be repaired for the ent...

AI Technical Summary

Problems solved by technology

The stainless steel foam tube technology independently developed by Canada's Link-pipe company was disclosed in the US Patent Office on October 4, 1994. The patent number is NO.5351720. The repair price of this technology is relatively expensive and is rarely used in China; -LOCK technology is also a kind of stainless steel casing repair, certified by the German Institute of Building Technology, the approval certificate number is DIBT (Nr.Z-42.3-374), the material is German V4A stainless steel material, the price is relatively expensive

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