Variable-diameter pipeline sealing fixture and pipeline maintenance method

A pipeline and variable technology, applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve the problem of single use range of pipe repairers

Active Publication Date: 2021-01-29
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a variable-diameter pipeline sealing jig and pipeline maintenance method to solve the problem that the scope of use of the pipeline patcher in the prior art is relatively single

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  • Variable-diameter pipeline sealing fixture and pipeline maintenance method
  • Variable-diameter pipeline sealing fixture and pipeline maintenance method
  • Variable-diameter pipeline sealing fixture and pipeline maintenance method

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Embodiment Construction

[0044] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0045] The present invention provides a variable-diameter pipeline sealing fixture, please refer to Figure 1 to Figure 14The variable-diameter pipeline sealing fixture includes a plurality of clamping plates 20 spliced ​​sequentially along the circumferential direction of the pipeline 10 to be repaired. The pipeline 10 includes a damaged pipe section 11 and non-damaged pipe sections arranged on both sides of the damaged pipe section 11. The variable-diameter pipeline seal The fixture also includes: a transition assembly 30, the transition assembly 30 is sleeved on at least one side of the damaged pipe section 11 on the undamaged pipe section, and a plurality of clips 20 are wrapped on the outs...

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Abstract

The invention provides a variable-diameter pipeline sealing jig and a pipeline maintenance method. The variable-diameter pipeline sealing jig includes a plurality of clamping plates spliced ​​sequentially along the circumference of the pipeline to be repaired. The non-damaged pipe section on both sides of the pipe section, the variable diameter pipeline sealing fixture also includes: a transition assembly, the transition assembly is sleeved on the non-damage pipe section on at least one side of the damaged pipe section, and a plurality of clamping plates are wrapped on the outside of the damaged pipe section and passed through the transition assembly and the non-damaged pipe section Non-destructive pipe section connection; the inner diameter of the transition assembly is adapted to the outer diameter of the corresponding non-destructive pipe section; among them, a pipe wrapping space for wrapping the damaged pipe section is formed between a plurality of clips and the transition assemblies on both sides of the damaged pipe section, and the damaged pipe section Sealed in the wrapping space of the tube body. The variable-diameter pipeline sealing fixture of the present invention solves the problem that the scope of use of the pipeline patcher in the prior art is relatively single.

Description

technical field [0001] The invention relates to the field of oilfield pipeline maintenance, in particular to a variable-diameter pipeline sealing fixture and a pipeline maintenance method. Background technique [0002] At present, pressure plugging technology or injection sealing technology is often used in oilfield pipeline maintenance. This technology mainly uses special clamps to wrap the pipeline to be repaired, and injects special sealant into it to achieve the sealing effect. It is suitable for medium temperature and The pressure range is wide, the operation is relatively simple, and it has been widely promoted and applied at home and abroad. [0003] In construction and application, under the condition that the strength design and quality of the fixture are guaranteed, the internal pressure of the fixture is the resultant force of the system pressure leaked into the sealed cavity and the extrusion force of the sealant that completes the seal, and the pipeline will bea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/172
CPCF16L55/172
Inventor 梁爱国
Owner PETROCHINA CO LTD
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