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Method and system for detecting and positioning leakage based on infrared imaging technique

A technology of infrared imaging and leak detection, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, which can solve the problems of inability to diagnose online and low efficiency

Inactive Publication Date: 2008-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Among them, methods 1 and 2 are limited by the detection principle, and have disadvantages such as low efficiency and inability to diagnose online.
Method 3 can only be used when the leakage hole is large and the gas flowing through is turbulent, and it is easily disturbed by noise

Method used

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  • Method and system for detecting and positioning leakage based on infrared imaging technique
  • Method and system for detecting and positioning leakage based on infrared imaging technique
  • Method and system for detecting and positioning leakage based on infrared imaging technique

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Embodiment Construction

[0057] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0058] Such as figure 1 , figure 2 As shown, a leak detection and positioning method based on infrared imaging technology of the present invention firstly sets the test pressure, and uses a cooling device to cool a certain pressure of gas as the test medium, and the target temperature is preset in the cooling device. The control device drives each valve to inflate the measured object to complete the timing control, the sensor device detects the system status, and uses the infrared imaging device to collect the infrared image of the measured object, and the infrared image is transmitted to the control device and undergoes a series of image processing The operation is used to analyze, calculate the leakage amount and locate the leakage point, and the detection result is displayed on the display device. After the test is completed, the control device ...

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Abstract

The invention relates to a leakage detection and location method and a system thereof based on infrared imaging technology, belonging to the detection technology field. The leakage detection and location system comprises a control device, an infrared imagery device, a cooling device, a sensing unit, an air charging system and a display device. Gas with certain pressure is cooled by the cooling device to be used as test medium, each value is driven by the control device to implement aeration completion timing control on a measured object, and the system state is detected by the sensing unit, a infrared picture of the measured object is collected by the infrared imagery device and then transmitted to the control device to undergoing a series of image processing operations for analysis, leakage amount calculation and leakage point location, the test results is showed on the display device. The invention has high detection precision, high-efficiency for leak point locating, strong anti-interference ability and can take non-contact automatic measurement.

Description

technical field [0001] The invention relates to a leak detection and positioning method and its equipment, in particular to a leak detection and positioning method and system that uses low-temperature pressure gas as a leak detection medium and uses an infrared imaging device to image a measured object, and belongs to the technical field of detection. Background technique [0002] With the rapid development of science and technology in today's society, the market demand for products presents the characteristics of diversity and complexity, and the competition is becoming more and more fierce. For objects with container properties, the quality of their sealing performance directly determines the quality of the product. If a non-conforming product whose leakage exceeds the allowable range is used, not only its function will be affected, but in severe cases, it may cause serious consequences such as fire, explosion, and harmful gas overflow. With the improvement of leakage det...

Claims

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Application Information

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IPC IPC(8): G01M3/02
Inventor 葛楠彭光正
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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