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Cutting blind plate on-line pressurized plugging device and plugging method for small-pipe-diameter high-pressure pipeline

A technology for high-pressure pipelines and plugging devices, applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve the problems of irregular pipe diameters, long blocking time, etc., and achieve the effect of blocking safety.

Inactive Publication Date: 2016-12-21
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the above-mentioned prior art, the present invention provides an online pressurized plugging device for a shearing blind plate of a small-diameter high-pressure pipeline, which solves the problem that the prior art cannot realize high-pressure and high-temperature pipelines, irregular internal diameters of pipelines, Insufficiency of blocking in situations such as requiring a long blocking time

Method used

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  • Cutting blind plate on-line pressurized plugging device and plugging method for small-pipe-diameter high-pressure pipeline
  • Cutting blind plate on-line pressurized plugging device and plugging method for small-pipe-diameter high-pressure pipeline
  • Cutting blind plate on-line pressurized plugging device and plugging method for small-pipe-diameter high-pressure pipeline

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Embodiment

[0030] An online pressure plugging device for a small-diameter high-pressure pipeline with a shearing blind plate is shown in the figure, including a shearing and sealing hydraulic cylinder 1, a sealing header 2, a sealing blind plate 7, a triangular cutter 11, a shearing Cutting and sealing box 6, upper flange 5, lower flange 12, bottom box 8, thrust bolt 9 and grease injection bolt 14; the upper and lower ends of the shearing and sealing box 6 are provided with through holes; the shearing and sealing Thrust bolts 9 are installed on the end face of the downstream side of the box 6, and grease injection bolts 14 are installed on the end face of the upstream side of the shearing and sealing box; , the upper flange 5 is installed on the top surface of the shearing and sealing box 6, and the sealing header and the shearing and sealing hydraulic cylinder are connected into one and hoisted to the upper flange 5; the piston of the shearing and sealing hydraulic cylinder 1 The pluggi...

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Abstract

The invention discloses an online pressurized plugging device and a plugging method for a shearing blind plate of a small-diameter high-pressure pipeline. Blocking box, upper flange, lower flange, bottom box, thrust bolts, grease injection bolts, reinforcement rings, upper top cover, lower bottom cover, etc. The cutter is installed on the front end of the plugging blind plate, and the plugging blind plate is installed on the piston rod of the shearing plugging hydraulic cylinder. Start the hydraulic cylinder, push the plugging blind plate and the cutter to move downward in the shearing and sealing box, the cutter cuts the pipe, and the thrust bolt on the downstream side of the shearing and sealing box pushes the sealing blind to move axially and tighten Closely fit the sealing end face of the shearing and sealing box to achieve metal-to-metal sealing. The sealing grease is injected from the grease injection bolt on the upstream side of the shearing and sealing box to the sealing surface for secondary auxiliary sealing. On-line pressurized plugging of small-diameter pipelines is realized.

Description

technical field [0001] The present invention relates to a rapid repair technology for fluid pipelines, in particular to the technical field of online hot-pressed plugging of pipelines, in particular to an online hot-pressurized plugging device for shearing blind plates of small-diameter high-pressure pipelines and The method; it is suitable for the plugging operation site of small-diameter fluid pipelines. Background technique [0002] No matter what kind of medium the pipeline transports, there are operations such as pipeline leakage, replacement of corroded pipelines, installation and replacement of valves, distribution transformation and other operations during operation, so the situation of temporary pressure blockage cannot be avoided. Pipeline plugging technology is used to isolate the conveying medium inside the pipeline. [0003] According to GB / T 28055-2011 "Technical Specifications for Hot-pressed Plugging of Steel Pipelines", the plugging technology is divided in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/10F16L55/18
CPCF16L55/10F16L55/18
Inventor 葛汉林姜芳吴明王平孙长龙
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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