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Method of spraying mortar composite inner lining of steel cylinder with hanging net and non-excavation repair of pressure pipeline

A technology for pressure pipelines and spraying mortar, which is applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., which can solve the problems of reduced cross-section of old pipelines, difficult construction, and insufficient pipeline flow capacity, etc., to achieve shrinkage Over-current section, improved internal pressure resistance, good sealing effect

Active Publication Date: 2017-05-03
漳州安越新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a relatively feasible non-excavation repair solution for pressure pipelines of these two types of materials is: insert small-diameter plastic pipes or metal pipes into the old pipeline. The biggest disadvantage of this type of solution is that the newly inserted pipeline will cause damage to the old pipeline The flow section is greatly reduced, resulting in insufficient flow capacity of the repaired pipeline; and it is extremely difficult to insert new plastic pipes or metal pipes into large-diameter pipelines

Method used

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  • Method of spraying mortar composite inner lining of steel cylinder with hanging net and non-excavation repair of pressure pipeline
  • Method of spraying mortar composite inner lining of steel cylinder with hanging net and non-excavation repair of pressure pipeline

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1: The present invention provides a kind of steel cylinder hanging mesh spraying mortar composite lining for the non-excavation repair of pressure pipeline, including steel cylinder layer 3 and steel wire mesh reinforced mortar layer 5, its structure is as follows figure 1 shown. The composite inner lining is composed of a steel cylinder layer 3 and a steel wire mesh reinforced mortar layer 5 from the outside to the inside; the steel cylinder layer 3 is installed on the inner side of the mortar primer layer 2 in the old pipeline, and the mortar primer layer is placed on the inner side of the old pipeline. Spray directly on the inner wall of the cleaned old pipeline when repairing the old pipeline; the steel mesh reinforced mortar layer 5 is wrapped with a steel mesh 4, and the steel mesh is anchored on the inside of the steel cylinder of the steel cylinder layer 3 by welding, and then placed on the steel cylinder 1. The surface of the steel wire mesh 4 is spr...

Embodiment 2

[0029] Embodiment 2: The present invention provides a method for the non-excavation repair of steel cylinder hanging net spraying mortar composite lining and pressure pipeline. First, the inside of the old pipeline 1 to be repaired is thoroughly cleaned, and the debris inside the old pipeline 1 is removed , sediment and raised hard fulcrums; then follow the steps below to implement:

[0030] Step (1) Use the centrifugal sprayer 6 to construct the inner wall of the cleaned old pipeline 1, and spray the mortar to lay the bottom layer 2, so that the inner wall of the old pipeline 1 is round and free of raised hard points.

[0031] Step (2) According to the specifications, embedding conditions, design pressure and other conditions of the old pipeline 1, design the thickness of the steel cylinder bearing the internal pressure and the thickness of the steel mesh reinforced mortar layer 5 bearing the external pressure and vacuum pressure, select the steel plate and the steel mesh mate...

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Abstract

The invention relates to a steel cylinder mesh suspended mortar spray compound lining and a pressure pipe non-excavation repair method to be used for performing non-excavation repair on old pressure pipes and culverts, with the diameters being more than 0.8m, which cannot bear established work pressure. The compound lining is formed by a two-layer structure of a steel cylinder layer and a steel wire mesh reinforcement mortar layer from the outside to the inside. A steel cylinder of the steel cylinder layer is arranged on the inside of an oil pipe inner mortar bottom layer, and the mortar bottom layer is sprayed on the cleaned old pipe inner wall during repair directly. A steel wire mesh is covered by the steel wire mesh reinforcement mortar layer and is welded and anchored in the steel cylinder of the steel cylinder layer, and mortar of certain thickness is sprayed on the surfaces of the steel cylinder and the steel wire mesh to form the steel wire mesh reinforcement mortar layer. The two layers of structures are fixedly connected to form the steel cylinder mesh suspended mortar spray compound lining. By applying the method, non-excavation repair of old pipes can be achieved, and the pipe pressure operation and prolonging of the pipe service life can be achieved without reducing the pipe cross section apparently.

Description

technical field [0001] The present invention relates to a steel cylinder hang net spraying mortar composite lining and a method for non-excavation repair of pressure pipelines, referred to as: SC-RCP technology, specifically a method for repairing steel pipes with a diameter above 0.8m that cannot bear the predetermined working pressure A method for trenchless repairing of pressure pipes (culverts) using steel cylinder hanging net spraying mortar composite lining and method for trenchless repairing of pressure pipes. Background technique [0002] At present, my country has a large number of large-diameter pressurized water diversion pipes, tap water main pipes, water conservancy culverts, pressurized drainage pipes, and heat pipes. To operate safely under pressure, repairs are urgently needed; these large diameter pipes are mostly reinforced concrete pipes and metal pipes. At present, the relatively feasible non-excavation repair plan for pressure pipes of these two types of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/16
CPCF16L55/16
Inventor 孔耀祖马保松
Owner 漳州安越新材料科技有限公司
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