Leak detection system and leak detection method of flange, welding seam, pipeline or equipment body

Abstract

The invention relates to the leak detection system of a flange, a welding seam, a pipeline or an equipment body. The system is mainly formed by a closed cavity, a detection unit and a connection lead.The closed cavity is wrapped on the outer side of the tested flange, the welding seam, the pipeline or the equipment body. Each closed cavity is embedded with a micropressure transmitter and is codedby a controller. All the micropressure transmitters are connected in parallel through using the connection lead and are connected to the detection unit. The closed cavity has heat insulation and leakage point detection functions. By using the system of the invention, the early-stage leakage of the flange, the welding seam, the pipeline or the equipment body can be timely discovered, a caution isemitted and accurate leakage point positioning is performed so that measures can be timely taken and the generation probability of a major accident is reduced. A technical scheme which combines electronic monitoring and manual inspection is adopted, the difficulty and intensity of the manual inspection are reduced, and the result of the electronic monitoring is manually and regularly inspected sothat the dual guarantee of the real-time monitoring of an operation equipment state is realized. The system can carry out safe and effective detection and has a good market value.

Description

technical field [0001] The invention relates to the field of heat insulation engineering and on-line detection, in particular to a leak detection system and method for flanges, welds, pipelines or equipment bodies. Background technique [0002] The pipeline network in the chemical plant is criss-crossed, and there are many dynamic and static equipment, and there are a lot of flammable and explosive media in it. During production and operation, the leakage of these media is very dangerous. However, since most of the pipeline network is covered with heat insulation materials, the leakage phenomenon is difficult to be found in time, and it is easy to cause heavy losses. Although there is a combination of configuration software monitoring and manual inspection in the existing pipeline leak detection system, it is still unable to detect the occurrence of leakage and locate the leak point in time. Such a pipeline leak detection system may miss the last time to take measures. Even...

AI Technical Summary

Problems solved by technology

However, since most of the pipeline network is covered with heat insulation materials, the leakage phenomenon is difficult to be found in time, and it is easy to cause heavy losses

Although there is a combination of configuration software monitoring and manual inspection in the existing pipeline leak detection system, it is still unable to detect the occurrence of leakage and locate the leak point in time. Such a pipeline leak detection system may miss the last time to take measures. Even if the timing is the best, it cannot effectively reduce the probability of serious accidents

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