摘要
复合材料筒体现采用全复合材料缠绕脱模成型。复合材料是一种多孔、疏松的材料,需要对其气密性进行研究,防止在实际使用中发生气体泄漏导致设备失效。本文主要针对复合材料筒体的管材密封性进行检测方法的研究。通过不同密封方式和不同测量方法的选择,以及不同的误差消除方法,最终寻找到一种利用筒体外壁密封,给内腔充氦气,再在外壁制造真空腔,利用氦质谱探漏仪检测真空腔中氦气含量的探漏方法。该方法可有效地排除不同密封面漏出氦气的干扰。该检测方法可以无损检测复合材料管材的气密性。利用此方法在静态环境下复合材料管材的泄漏率达到10^-10Pa·m^3·s^-1的数量级。
The cylinder of professional setting is embodied in completely composite materials by wounding and demoulding.The composite material is porous and loose,which means it is essential to conduct research on their airtightness to prevent gas leakage in actual use and cause equipment failure.This paper mainly studies the detection method of cylinder sealability.Finally,a leak detection method was obtained by selecting different sealing methods,measurement method and error elimination methods.This method is to seal the out wall of the cylinder,fill the inner chamber with helium,and create a vacuum chamber inside the outer wall,where to use the helium mass spectrometer to detect the helium content.The method can effectively eliminate the interference of helium leakage from different sealing surfaces,which can also detect the airtightness of the cylinder without causing damage.Using this method,the cylinder leakage rate is on the order of 10^-10Pa·m^3·s^-1 in a static environment.
作者
贺平
HE Ping(Istitute of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300180,China)
出处
《真空》
CAS
2020年第6期54-58,共5页
Vacuum
关键词
复合材料
气密性
泄漏率
composite material
airtightness
leakage rate
