家用燃气器具气密性试验原理及其应用概要

归纳了流体密封和气密性试验的技术原理和主要分类,并以差压法为例分析燃气器具生产过程试验,指出对于试验要求范围内的燃气器具泄漏类型,一般情况下气体泄漏流动过程处于粘滞流状态,在试验条件符合强化试验原则时,设备压力降与试验压力之间存在近似线性关系,论证了在不同试验压力下检测结果的差异,从而提出了确定试验条件的基本准则.同时...

Summary of Soundness Test Principle and Application for Domestic Gas Appliances

In this paper,the technical principle and main classification of fluid seal and air tightness test are summarized.Taking the differential pressure method as an example to analyze the production process of gas appliances,it is pointed out that under the condition of strengthening test,the gas leakage flow process is in a viscous flow state,and there is an approximate linear relationship between the equipmenfs pressure drop and the test pressure.The difference in test results under test pressure provides a basic criterion for determining test conditions.It is pointed out that the appropriate increase of test pressure is the main measure to improve the accuracy.At the same time,the special case of the self-tight seal structure whose sealing effect is enhanced with the increase of gas pressure is also discussed.Leakage can be detected more effectively in such structures by taking measures to reduce the test pressure.It is pointed out that it should not meet the recommendations of the intensive test principle.Finally,the application experience of the above research results in gas appliances manufacturing process is introduced.