Device for achieving rapid dividing to form dry and wet areas for maintaining interior of liquid conveying pipeline

Abstract

The invention discloses a device for achieving rapid dividing to form dry and wet areas for maintaining the interior of a liquid conveying pipeline, and belongs to the technical field of pipeline maintenance. The device comprises an upper supporting part, a lower supporting part and a water retaining part, the water retaining part is composed of a water retaining sealing strip, a water retaining curtain and an overflow pipe, steel plates are embedded in the edge of the upper portion of the water retaining sealing strip at equal intervals and make contact with a bottom cone of a lower supporting movable ejector rod, the outer edge of the water retaining sealing strip is attached to the pipeline, and the outer side of the water retaining sealing strip is connected with the water retaining curtain. By means of the device, a telescopic adjustable structure is adopted, the device can be suitable for pipelines with various inner diameters, counter-acting force acting on the pipe wall through the upper supporting part is transmitted to the water retaining sealing strip through the lower supporting part, the water retaining sealing strip is extruded to be properly deformed and tightly attached to the inner wall of the pipeline, the effect of cutting off water flow is achieved, dryness of the maintenance areas is kept, the construction maintenance time can be effectively shortened, the maintenance efficiency is improved, the maintenance quality is guaranteed, and the labor intensity of workers is relieved.

Description

technical field [0001] The invention relates to the technical field of pipeline inspection and maintenance, and more specifically relates to a device for forming a dry and wet area by quick partitioning for internal maintenance of a liquid delivery pipeline. Background technique [0002] A large number of pipes are used in industrial production and civil facilities. The materials of the pipes are metal and non-metal, and the transported media are gas, liquid and solid-liquid mixture. Due to the quality problems of the pipeline, the quality of the welding during installation, and the leakage caused by the wear of the conveying medium on the inner wall of the pipeline, the pipeline needs to be replaced and repaired. When replacing the pipeline, when the bottom of the low-lying metal pipeline needs to be repaired by electric welding, there will be a large amount of flowing medium and water mixture in the pipeline continuously flowing to the maintenance site, which seriously aff...

AI Technical Summary

Problems solved by technology

When the conveying medium is mixed with solid and liquid and there are large particles such as sedimented sand and gravel at the bottom of the pipeline, the liquid will seep out from the gap of the sediment, and the interception effect is not good

Manual closure means that workers use sand and rags to block the liquid and slurry in the pipeline before repairing and welding. After a few minutes, the liquid will seep in, and workers have to repeatedly use sand and rags to stop the leak, seriously affecting Maintenance efficiency and quality. If maintenance workers come into contact with the liquid in the pipeline and get wet, electric shock accidents will occur, which seriously threatens personal safety.

There are solid sediment particles in the lower half of the pipeline that transports solid-liquid mixed media, and it takes several hours for the liquid to seep out of the sediment, which seriously affects the construction period

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