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Valve leak detection method
2015-01-03 by bridge
Valve leakage phenomenon often occurs within the valve seals, Gas Cooker valve plate, sealing surface and the pipeline media. Mifengbuyan valve leaks can cause low flow media, depending on valve design and manufacturing process selection. Valve plate or sealing surface deformation can also lead to leakage of small flow medium. Damage the valve sealing surface will make Mifengbuyan, resulting in a small leakage flow will be accompanied by a large flow leakage, depending on the valve manufacturing, transportation, testing, installation and use. Process piping medium if a large amount of solid impurities, the valve will not be completely closed, so that there will be a large flow rate or a small leakage flow to varying degrees. Based on the above analysis of the causes of valve leakage, we can see that the internal leakage of the valve leakage are often little traffic, there will be very few cases large flow leakage occurs, the impact of process plants, and therefore also the surrounding environment is relatively small. The majority of the gas cookers freestanding leakage will have a more serious impact. Leakage of the valve would not only have a great raw materials and waste products, but also seriously affect the environment or even cause a fire, explosion, poisoning and other serious accidents.
Existing valve leak detection in many ways, but there is no uniform classification. More accepted now discuss three classification methods:
According to the parameters of the detection method to detect divided into direct and indirect detection assay. Direct detection method which uses a detector to detect the leakage of the valve peripheral gas or liquid, to determine whether it is due to leaks in the valve. Changes in indirect detection method that is flowing through the valve media pressure, flow and other operating parameters to determine whether there is a gas Burner Valves leak.
Depending on the position detection device which detects the detection method is divided into internal and external detection.
Detection method based on hardware and software. Direct observation of hardware-based detection methods, fiber leak detection method, oil-soluble pressure tube, infrared leak detection method. Negative pressure wave method software-based detection methods, mass balance method, statistical detection method, the pressure point analysis and acoustic emission method.
Existing valve leak detection in many ways, but there is no uniform classification. More accepted now discuss three classification methods:
According to the parameters of the detection method to detect divided into direct and indirect detection assay. Direct detection method which uses a detector to detect the leakage of the valve peripheral gas or liquid, to determine whether it is due to leaks in the valve. Changes in indirect detection method that is flowing through the valve media pressure, flow and other operating parameters to determine whether there is a gas Burner Valves leak.
Depending on the position detection device which detects the detection method is divided into internal and external detection.
Detection method based on hardware and software. Direct observation of hardware-based detection methods, fiber leak detection method, oil-soluble pressure tube, infrared leak detection method. Negative pressure wave method software-based detection methods, mass balance method, statistical detection method, the pressure point analysis and acoustic emission method.
keywords: Manual Gas Valves