Sample part with adjustable gas-leakage quantity and detection method thereof

Abstract

The invention relates to a gas leakage adjustable sample component and detecting method, where it using piston rod, leak core, gas outlet's outer thread, fixed bolt, auxiliary ruler tube and active seal ring to compose a rotary moving assembly which rotationally moves outside and inside the relatively static assembly composed of gas inlet, filter core, piston casing and primary ruler's inner thread. The more deeply the piston is screwed in the piston casing, the lower the gas pressure flowing through the leak core is. All the positions of the rotation and movement can be recorded by the inner thread of primary ruler and the auxiliary ruler tube. When repeatedly recording the position, there is a corresponding gas leakage. The detecting method: by using the adjustable sample component combined with soap foam flowmeter, it can make quantitative equivalence and simulation on micro leakage of various volumes, and it is a necessary method for identifying air-tight leakage measurer. The adjustable sample component has stable and adjustable leakage, a scale, low cost of fabrication, and convenient detection and calibration.

Description

technical field [0001] The invention relates to the field of gas leakage detection, in particular to a sample with adjustable gas leakage and a detection method. Background technique [0002] There are no mature technologies and products for large-capacity air-tightness measurement at this stage. To a large extent, large-volume, micro-leakage measurement and calibration technologies and products have not developed and matured. However, traditional measurement methods and technologies can only measure and calibrate qualitatively or semi-quantitatively, and it is almost impossible to quantitatively test microleakage. [0003] The airtight micro-leakage sample produced by Fukuda, Japan, Tianjin, China, is a long tube with a small diameter. The leakage can be calculated by empirical formula, but the manufacturing process is complicated and the price is relatively expensive. [0004] The domestic traditional method is to use a laser to punch micron-scale small holes on the metal...

AI Technical Summary

Problems solved by technology

For the pressure greater than 1 MPa, the leakage is so large that it can no longer be called a micro leakage, and the leakage cannot be adjusted

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