CAJ | 학술논문

疏水截止阀在机组启动过程中疏水，机组正常带负荷工况处于关闭状态。疏水截止阀若出现泄漏，不仅影响机组运行安全，而且导致机组效率降低，严重时导致人身安全事故。为了有效诊断出疏水阀微小泄漏状态，通过理论与试验相结合的方法探讨了基于阀前管道上两个特定点温度特征的泄漏诊断方法，获得了阀前管道两点温度特征值与微小泄漏流量之间的定量规律，并以工程实例加以检验，表明该方法在诊断疏水阀泄漏故障方面具有较高的可靠性，具有良好的工程应用价值。
소수절지벌재궤조계동과정중소수，궤조정상대부하공황처우관폐상태。소수절지벌약출현설루，불부영향궤조운행안전，이차도치궤조효솔강저，엄중시도치인신안전사고。위료유효진단출소수벌미소설루상태，통과이론여시험상결합적방법탐토료기우벌전관도상량개특정점온도특정적설루진단방법，획득료벌전관도량점온도특정치여미소설루류량지간적정량규률，병이공정실례가이검험，표명해방법재진단소수벌설루고장방면구유교고적가고성，구유량호적공정응용개치。
The drain valve is used in the starting of unit ,and closed when unit works with load .Drainage valve leakage will result in serious risks for the equipment safety , and generate a low power generation efficiency , even lead to personal security accident .For effective diagnoses of small leaks in drain valve , both in theoretically and experimentally , this article has researched based on the diagnosing method of two special spots ’ temperature features on pipeline , to achieved the quantitative variation law between spots ’ temperature value and flows of leakage , which has been proved in projects that states the method is worthwhile and highly reliable in the diagnosis of drain valve leakage in engineering .