Pipeline tightness positioning monitoring system and pipeline tightness detection method
A pipeline sealing and monitoring system technology, applied in pipeline systems, using liquid/vacuum degree for liquid tightness measurement, and measuring the fluid's acceleration and deceleration rate, etc. Judgment, influence of fluid velocity, etc., to achieve the effect of simple and easy detection, cost-effective, and real-time processing
Inactive Publication Date: 2016-11-16
NORTH CHINA INST OF AEROSPACE ENG
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This method is relatively mature and simple, but since the climbing machine needs to use liquid flow to push it forward, it is not suitable for pipelines with many elbows, and the climbing machine generally records the data and judges the leakage after it flows out of the pipeline, so It is difficult to quickly judge the leakage, and at the same time, affected by the fluid velocity, it is difficult for the intelligent crawler to accurately locate the leakage point
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[0050] After pressurizing the test pipeline, put the leak detection vehicle and positioning vehicle into the test pipeline in turn and keep the pipeline sealed. The missed inspection vehicle starts to move forward at a predetermined speed, and receives the ranging signal sent by the positioning vehicle. When the ranging information meets the predetermined requirements of the system, the wireless communication module is used to send the positioning vehicle forward command. During the forward process, the air pressure sensor on the leak detection vehicle performs rapid detection and senses the air pressure information of the current position in the pipeline in real time. Under normal conditions, the air pressure in the pipeline changes slowly and linearly, indicating that the pipeline at the current position is well sealed; There is a possibility of leakage at this position. At this time, the missed inspection vehicle stops and sends a "precise detection" control command to the p...
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A pipeline tightness positioning monitoring system, comprising: a leak detection vehicle, the leak detection vehicle includes a first vehicle body, the first vehicle body is provided with an air pressure sensor and a first communication device; a positioning vehicle, the positioning vehicle includes a first The second vehicle body is provided with a driving device, a second communication device, a processor, a speed detector, a crystal oscillator unit and a distance measuring component; an intelligent terminal. A method for detecting pipeline tightness, comprising the steps of: 1 pressing the inside of the pipeline and placing a pipeline tightness positioning monitoring system in the pipeline; 2 conducting forward detection, repeating the detection if the air pressure changes, and continuing to move forward if the air pressure changes little line detection. The devices used in the pipeline tightness positioning monitoring system are cost-effective and accurate in positioning. At the same time, the test results can be processed and displayed in real time, which overcomes the shortcomings of various current pipeline rupture detection methods. The pipeline tightness detection method uses the double-vehicle detection method to make the positioning more direct and accurate, and improves the efficiency of pipeline detection.
Description
technical field [0001] The present invention relates to the technical field of pipeline detection equipment, and more specifically relates to a pipeline tightness positioning monitoring system and a pipeline tightness detection method. Background technique [0002] Pipeline transportation, as the simplest and direct way of fluid transmission, has been widely used by human beings. Especially in recent decades, due to the characteristics of low cost of pipeline transportation, simple maintenance, high safety, and stable supply, its application scope has been continuously expanded, including oil, natural gas, tap water, and even sewage treatment. However, if you want to use pipelines for fluid transmission normally, you must have highly reliable and highly sealed pipelines. However, during the production process of the pipeline, there may be poor airtightness due to process problems; especially in today's production applications, long-distance transmission pipelines need to be...
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IPC IPC(8): G01M3/28F17D5/02
Inventor 孙东辉李宗睿刘金梅藏天亮宋月宋志颖
Owner NORTH CHINA INST OF AEROSPACE ENG