Construction method for online connecting steel water pipelines
A construction method and water pipe technology, applied in the direction of pipes/pipe joints/fittings, pipe laying and maintenance, mechanical equipment, etc., can solve problems affecting life and production, achieve significant social and economic benefits, low construction costs, and easy operation convenient effect
Active Publication Date: 2011-08-31
CHINA 22MCC GROUP CORP
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AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to solve the problem of the existing technology that the water cut-off wiring construction affects life and production, and to provide a kind of connection pipeline under the state of non-stop water supply, based on the principle of not affecting production, construction, life, and production. On-line steel water pipe connection construction method
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Embodiment Construction
[0022] This embodiment is an on-line steel water pipe wiring construction method, which is operated according to the following steps:
[0023] Construction preparation
[0024] Pipe joints, gate valves 5, pipe nipples, blind plates 7, drain valves 9, jacking wires 11 and various tools need to be prepared before construction.
[0025] construction steps
[0026] 1. Welding pup joint 2, top screw nut 3
[0027] See figure 1 , On the pipe wall of the main water supply pipe 1, the top screw nut 3 and the puppet 2 are welded, and the puppet 2 is a puppet with a flange. In order to ensure the welding quality, all welds are groove welded.
[0028] 2. Set the opening line
[0029] See figure 2 , draw an opening line 4 along the wall of the main water supply pipe on the inner side of the weld of the pup joint 2, draw a cross center line with the top screw nut 3 as the center, and take the opening line 4 as the apex, and divide the wall of the main water supply pipe that is marke...
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The invention discloses a construction method for online connecting steel water pipelines, which belongs to the method for connecting steel water supply pipelines. The method mainly comprises the following steps of: welding a jackscrew nut and a pipe nipple on the pipe wall of a main water supply pipe; scribing an opening line along the wall of the main water supply pipe on the inner side of a welding line of the pipe nipple, sequentially arranging a slide valve, a second pipe nipple, a jackscrew and a stop plate on the tail part of the pipe nipple, arranging a drain valve on the lower part of the stop plate, connecting the jackscrew with a handle and the jackscrew nut after the jackscrew runs through the stop plate and a flange, and exposing the handle of the jackscrew out of the stop plate; closing the drain valve, repeatedly rotating the handle of the jackscrew, cutting the wall of the main water supply pipe by pushing and pulling the jackscrew, rotating the jackscrew when the wallof the main water supply pipe is completely separated from the main water supply pipe, pulling the cut pipe wall out of the slide valve, closing the slide valve and opening the drain valve to drain residual water; and disassembling the stop plate, the jackscrew and the second pipe nipple, and connecting the flange of the slide valve and an external pipeline. The method has the advantages of the capacity of connecting new pipelines without cutting off a water supply and influencing life and production, low construction cost, convenient and fast operation, and remarkable social benefit and economic benefit.
Description
Technical field: [0001] The invention relates to a steel water supply pipeline connection construction method, in particular to an online steel water pipe connection construction method for connecting new pipelines in a state of non-stop water supply. Background technique: [0002] During the construction of domestic construction or expansion projects, most production or domestic water pipe networks must be connected to the main network. Often many projects do not have a reserved interface on the main network, and the method of wiring after the water is cut off is generally adopted during construction, which will inevitably affect production and life, especially may cause certain losses to the production unit. Invention content: [0003] The purpose of the present invention is to solve the problem of the existing technology that the water cut-off wiring construction affects life and production, and to provide a kind of connection pipeline under the state of non-stop water ...
Claims
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IPC IPC(8): F16L1/024F16L1/09
Inventor 刘庆明
Owner CHINA 22MCC GROUP CORP