About detect ductile iron pipe tightness knowledge to be understood

2013-12-26


Ductile iron pipe tightness monitoring is essential to the process of production and use of processes, including the detection of toxic gas leak detection to ensure product quality, production safety important process gas leak , leak detection of combustible gases and air tightness testing . Most of the first two methods can be detected by the chemical sensor is usually detected in a component or system during use . If there is a suitable sensor , the method is relatively simple. Tightness testing described herein , typically the component or system for detecting manufacturing process usually requires quantitative detection , and require fast , large quantities in the production site .

Ductile iron pipe fittings with 180 prime concrete retaining wall . Tightness testing required on the cast iron pipe casing, if leakage occurs , they need to clean up the soil , broken concrete and other factors tedious work, so inevitable to influence the progress in the implementation of a common project approach, we generally take the following way of ductile iron pipe tightness tests: common method of leak detection method bubbles , painting , chemical tracer gas leak detection method, the pressure change law , traffic law , ultrasonic method and so on. The traditional method of leak detection method and use more bubble smear method. Bubble method the workpiece is immersed in the water, filling into the air , and leaks out from the air bubbles collect at a certain time to measure the amount of leakage . Smear the workpiece surface is filled with a gas pressure inside the applicator is easy to produce a class of soap bubble liquid , the bubble generation to observe leakage detection size. Both simple operation, can be directly observed and leak leakage site , but does not know in advance the work site and several leak leakage , difficult to collect all air bubbles affect the measurement accuracy ; Secondly, bulky, heavy , the outer surface of complex parts , bubbles attached to the bottom of the parts and folds and difficult to observe ; tests needed after drying the workpiece cleaning , can not be achieved automatically , quantitative leak . Therefore, these two methods to meet the high-precision , high- efficiency production demand appeared to be inadequate . With the rapid development of computers , electronics , sensor technology , and leak detection technology development will usher in a new development opportunity . Future high-precision leak detection technology will further the development of efficient , intelligent direction .