PCCP pipe-jacking relaying ring

A technology of pipe jacking and front ring, applied in the direction of pipes, rigid pipes, pipe components, etc., can solve the inconvenient disassembly of the relay ring oil cylinder, and the relay ring cannot solve the needs of PCCP pipe jacking relay and small-angle deviation correction. Can not be reused to achieve the effect of overcoming the difficulty of jacking, preventing mud and sand from entering the pipeline, and good wear resistance

Active Publication Date: 2010-05-19
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing relay ring cannot solve the requirements of PCCP pipe jacking relay and small-angle deviation correction, and the existing relay ring oil cylinder is inconvenient to disassemble and cannot be reused, so a PCCP is provided Jacking relay ring

Method used

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  • PCCP pipe-jacking relaying ring
  • PCCP pipe-jacking relaying ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] The PCCP pipe relay ring is composed of a jacking cylinder, a steel shell, a pressure ring, and a water-stop seal. The jacking cylinders are evenly distributed in the pressure ring. When the required jacking force exceeds the jacking capacity of the main jacking station, a relay ring is installed in the construction pipeline for continued jacking construction.

[0020] The φ2200PCCP pipe jacking construction used in the project, according to the calculation, arranges a relay ring every 100m. During the jacking process, the jacking of the relay ring can be controlled automatically according to the magnitude of the jacking force, or manually controlled according to the working conditions.

[0021] The φ2200PCCP relay ring is equipped with 22 500KN jacking cylinders (cylinder stroke is 400mm), the maximum jacking force is 11000KN, and the relay ring uses special sealing rubber strips, which can be adjusted by radial adjustment bolts, and can be partially or partially adjust...

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Abstract

The present invention relates to a PCCP top pipe relay ring, which comprises a front ring, a rear ring and a top pushing cylinder, and is characterized in that the rear ring is formed by a steel bearing ring and a casing welded into a whole. The outer side of the bearing ring is sleeved with the front ring. A conical plane is formed by the contracting of an outer cylinder of the bearing ring fromfront end to the direction of the casing. A rotary corner is arranged between the conical plane and an inner cylindrical plane of the front ring. A matched connecting joint between the bearing ring and the front ring is provided with two water stop sealing rings for regulation by a radial regulating bolt. A group of the top pushing cylinders are uniformly distributed and arranged inside the bearing ring. The present invention can solve the needs of relaying of the top pipes of the PCCP pipes and deviation rectification of small angels, as well as the technological problems of inconvenient dismantlement of the cylinder of the existing relay ring and no recycling use. Due to adopting the water stop sealing ring for regulation by the radial regulating bolt, the present invention is characterized by being adjustable and combined, and the replacement of a wearing sealing ring under the normal pressure, thereby overcoming the technological difficulty of difficult top pushing caused by the wear of the sealing ring of the relay ring under the complex geological condition of high water-head.

Description

technical field [0001] The invention relates to a pipe jacking relay ring for building construction, in particular to a PCCP pipe jacking relay ring for prestressed steel cylinder concrete pipes. Background technique [0002] The PCCP pipe is different from the F pipe, its allowable rotation angle is much smaller than that of the F pipe, and the end surface area of ​​the PCCP pipe is also smaller than the F pipe during jacking, so the axis deviation of the jacking pipe is smaller than that of the jacking F pipe, and it is not allowed to Large deviations will occur during jacking, otherwise it will affect the safety of the pipe section itself. The jacking force must also be controlled within the allowable range (≤10000KN). Therefore, during the pipe jacking process, the setting of the relay room must meet the requirements of the jacking force. [0003] The existing relay ring cannot solve the needs of PCCP pipe jacking relay and small-angle deviation correction, and the exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/00F16L9/08
Inventor 李耀良邵敏杰孙海明王建华张璐璐
Owner SHANGHAI FOUND ENG GRP
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