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Leak testing by gas flow signature analysis

机译:通过气流特征分析进行泄漏测试

摘要

To leak test a cavity in a test item, a pressurizing gas, at a preselected pressure is applied to the test item and the flow rate of the pressurizing gas during pressurization is recorded. This recorded flow rate is compared with a threshold level based on gas flow signature data for a reference test item. If the recorded gas flow exceeds the threshold level, an excessive leak signal is produced. This leak testing method significantly reduces the time required to perform low flow rate leak detection in large volume test items.
机译:为了对测试项目中的空腔进行泄漏测试,将预选压力下的增压气体施加到测试项目上,并记录增压过程中增压气体的流量。将该记录的流量与基于参考测试项目的气流特征数据的阈值水平进行比较。如果记录的气体流量超过阈值水平,则会产生过多的泄漏信号。这种泄漏测试方法大大减少了在大容量测试项目中执行低流量泄漏检测所需的时间。

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