Pipe mouth edge-plugging method

A nozzle and flange technology is applied in the field of plugging the nozzle when the pipeline is used online, which can solve problems such as difficulties and achieve the effect of simple operation and solving maintenance.

CN103244787AInactive Publication Date: 2013-08-14CHINA MCC17 GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-08-14
Estimated Expiration
Not applicable · inactive patent

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Patent Text Reader

Abstract

The invention relates to a pipe mouth edge-plugging method. The pipe mouth edge-plugging method includes sleeving a flange corresponding to the size of a plugging pipe mouth on a pipeline to be plugged firstly, fixing a 5m draining belt on the pipe mouth to lead water of other fluids to drain nearby, confirming no water of other fluids flowing down the pipe wall, moving the flange sleeved on the pipeline to a position 10mm to the edge of the pipe mouth to level the flange, fully welding a contact periphery of the bottom of the flange and the pipeline, taking out the draining belt after the welding is finished, and fixing and pressing a plugging valve with wrapped rubber of the flange and the welded flange through bolts. The pipe mouth edge-plugging method is simple in operation, convenient, quick, and practical, and can effectively solve problems during examining and mounting.
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Description

Technical field

[0001] The invention relates to the field of maintenance and installation of common online fluid pipelines such as water pipelines, in particular to a method for plugging the nozzle of the pipeline when the pipeline is used online, and is used for plugging the fluid in the pipeline when it cannot be stopped. Background technique

[0002] At present during the maintenance and installation of metallurgical pipelines, especially for online pipelines, when plugging a pipe orifice that is draining water or discharging other ordinary fluids, when the water source or fluid cannot be stopped, it is desired to block the pipe. It is very difficult to manage the mouth. Summary of the invention

[0003] The purpose of the present invention is to solve the difficulty of plugging the pipe orifice in online operation, and propose an online orifice plugging method; without stopping water or other ordinary fluids, the pipe orifice can be quickly and safely completed Sealing, impro...

Examples

Embodiment Construction

[0016] Such as figure 1 , figure 2 As shown, the present invention first sets the flange 1 corresponding to the size and specification of the nozzle 4 to be blocked on the pipeline to be blocked, and then fixes the 5m-long drainage belt 2 on the nozzle to ensure that all the liquid in the pipeline can pass through The drainage belt flows out, and at the same time it is confirmed that no water source overflows from the drainage belt 2 fixed on the nozzle. At this time, move the flange 1 that has been sleeved on the pipe to a distance of 10mm from the edge of the nozzle, and level the flange 1. The circumference of the bottom of flange 1 in contact with the pipe is fully welded. After the welding is completed, remove the drainage belt 2, and fix and compress the plug valve 3 with the flange covered with rubber and the flange 1 previously welded by bolts.

[0017] The online plugging method of the nozzle is carried out as follows:

[0018] In the first step, a flange corresponding ...