CIPP variable-diameter lining pipe and manufacturing method thereof

Abstract

The invention discloses a CIPP variable-diameter lining pipe and a manufacturing method thereof. An outer film of a large pipe section is laid according to the length of the large pipe section and the pipe diameter of a small pipe section; laying outer membranes of the small pipe sections according to the lengths and the pipe diameters of the small pipe sections; glass fiber cloth is arranged in the outer membranes of the small pipe section and the large pipe section; inner films are laid in the glass fiber cloth of the small pipe section and the large pipe section, the glass fiber cloth of the large pipe section and the glass fiber cloth of the small pipe section are enclosed according to the pipe diameter of the small pipe for lap joint, and the inner films and the outer films of the large pipe section and the small pipe section are connected to form a dry pipe; the main pipe is grouted to form a hose, the hose is conveyed into the variable-diameter pipeline and then is filled with air, the small pipe expands to be quickly attached to the old pipe, the large pipe expands to the small pipe diameter, then the large pipe is in lap joint with the large pipe section under the action of air pressure, the glass fiber cloth is expanded to be attached to the large pipe diameter, and the inner film and the outer film are synchronously expanded till the large pipe diameter is recovered and the large pipe diameter is attached to the old pipe. The pipe fitting is completely attached to an old pipe, wrinkles are avoided, the flowing capacity of the pipe is not affected, and the structure supporting and repairing effect of the pipe fitting can be fully achieved.

Description

Technical field [0001] The present application belongs to the field of drainage pipeline preparation, and particularly relates to a CIPP variable diameter lining pipe and its manufacturing method. Background technique [0002] Due to the long-term lack of professional maintenance of my country's drainage pipelines and the serious aging problem, most pipelines suffer from rupture, disconnection, deformation, collapse and other diseases. At present, drainage pipeline diseases are mainly treated through excavation repair or non-excavation repair. Pipeline excavation repair It is easy to cause traffic congestion, environmental impact and long construction period, which limits its scope of application. However, trenchless pipeline repair has the characteristics of low traffic environmental impact and short construction period. It is favored by the drainage industry, and its construction applications are becoming more and more popular. There are many, among which the main repair tec...

AI Technical Summary

Problems solved by technology

[0002] Due to the long-term lack of professional maintenance of my country's drainage pipelines and serious aging problems, most of the pipelines have cracks, disjoints, deformations, collapses and other diseases; at present, drainage pipeline diseases are mainly repaired through excavation or non-excavation repair, and pipeline excavation repair It is very easy to cause traffic congestion, environmental impact and long construction period, which limits its scope of application. The trenchless repair of pipelines has the characteristics of low traffic environmental impact and short construction period, which is favored by the drainage industry, and construction applications are becoming more and more Many, of which the main repair process is CIPP lining repair technology

[0003] With the popularization of the application of CIPP lining repair technology, there are more and more cases of using CIPP repair for variable diameter pipelines. However, the current use of CIPP to repair variable diameter pipelines has the following disadvantages: 1. Conventional CIPP lined pipes with equal diameters, such as according to The production of CIPP lined pipes with large pipe diameters will cause problems such as wrinkles in the small pipes, which will not only affect the repair appearance, but also reduce the structural performance after repair; if the CIPP lined pipes are produced according to small pipe diameters, not only The lining pipe of the large pipe cannot fit the old pipe, which cannot achieve the purpose of structural support and repair, and also affects the flow capacity of the pipe; The purpose of structural support repair; 3. Special CIPP sudden change diameter lining pipe, the sudden change diameter pipe section is not only complicated to make, but also requires extremely high precision in measurement and construction. Although the position of pipe change diameter can be measured by robot, the small pipe at the change diameter It is difficult to accurately measure the cross-sectional distance from the large pipe, and it is difficult to match the sudden change section of the liner pipe with the sudden change interface of the old pipe during construction

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