Drainage pipeline rapid hot melting connecting pipe lining repair process

Abstract

The invention relates to the technical field of pipeline repair, and discloses a drainage pipeline rapid hot melting connecting pipe lining repair process. The drainage pipeline rapid hot melting connecting pipe lining repair process comprises the following steps that 1, part or all of water in a repaired pipeline is drained, and a pipe pulling device and a pressing device are arranged at the twoends of the repaired pipeline correspondingly; 2, a plastic pipe is loaded into the repaired pipeline from the end away from the pipe pulling device, and the pipe pulling device is connected with theplastic pipe; 3, the other plastic pipe is lowered, the two plastic pipes are aligned, the plastic pipe on the outer side is jacked through a pressing device to clamp a metal heating piece between thetwo plastic pipes, the metal heating piece is electrified to enable the two plastic pipes to be connected in a hot melting mode, and the pipe pulling device pulls the bonded plastic pipes into the repaired pipeline; and 4, the other plastic pipe continues to be lowered, and the third step is repeated till the repaired pipeline is filled with the plastic pipe. The process is simple and convenientto operate, the cost is reduced, the construction speed is increased, construction can be carried out with water, and the application range is expanded.

Description

technical field [0001] The invention relates to the technical field of pipeline repair, in particular to a process for repairing the inner lining of a rapid thermal fusion pipe of a drainage pipeline. Background technique [0002] Drainage pipes that have been in operation for a long time are prone to decrease in strength, fracture, dislocation and leakage of sewage due to corrosion. They need to be repaired in time to avoid road collapse and cause harm to traffic safety and people's lives and properties. Existing pipeline repair technologies include CIPP hot water curing repair technology, UV curing repair technology, spiral wound steel belt repair technology, thermoplastic pipe repair technology and mechanical intubation lining repair technology, among which CIPP hot water curing repair technology The disadvantage is that the repair time is very long and can be completed in dozens of hours; the disadvantage of the UV curing repair technology is that the cost is high; the d...

AI Technical Summary

Problems solved by technology

[0002] Drainage pipelines that have been in operation for a long time are prone to decrease in strength, breakage, misalignment and sewage leakage due to corrosion. They need to be repaired in time to avoid road subsidence and cause harm to traffic safety and people's lives and property.

Existing pipeline repair technologies include CIPP hot water curing repair technology, UV curing repair technology, spiral wound steel strip repair technology, thermoplastic pipe repair technology and mechanical intubation liner repair technology, etc. Among them, CIPP hot water curing repair technology The disadvantage of repairing is that it takes a long time to complete, and it takes dozens of hours to complete; the disadvantage of UV curing repair technology is that the cost is very high; the disadvantage of spiral wound steel strip repair technology is that the diameter of the original pipe is reduced too much; It is a complex construction technology that requires high-pressure steam heating, which has potential safety hazards; in the mechanical intubation lining repair technology, the short tube is processed into a female-female port and then pressure-jointed. After plugging, there is a problem of poor sealing. Pipe jacking equipment and pipe pulling equipment are required to apply pushing and pulling forces to the short pipes after plugging at both ends of the repaired pipe. Usually, the pushing force is the main force and the pulling force is the auxiliary force during work. , will exert a thrust of 10-120 tons on the short pipe. The pipe used in this intubation process must be thick enough to avoid damage to the short pipe when the pipe is jacked. For this reason, it is generally necessary to use pipes with a pressure of 8 kg or 10 kg, and the cost is relatively high. High, at the same time the pipe jacking equipment and the pipe pulling equipment apply force at the same time, it is easy to have a bad fit, and it will also cause damage to the short pipe

In addition, the existing hot-melt machine welding is to heat the heavy metal plate and place it at the joint of the pipe joint, pressurize it until the joints on both sides are melted, take out the metal plate, and then solidify the joint on both sides. The disadvantage is that the welding time is long and requires 20-40 minutes, and the use of space is large, not suitable for the operation of drainage wells

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