Vacuum leak detection method of liquid medium for space navigation

The invention discloses an astronavigation liquid medium vacuum leak detection method, which comprises a calibration system, a leak rate test system, a standard leak hole and an auxiliary air exhaust system, and is characterized in that the calibration system and the leak rate test system respective...

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Hauptverfasser:	QI FEIFEI, SUN LIZHI, QI JIADONG, GUO CHONGWU, ZHANG HAIFENG, ZHANG XIUTING, REN GUOHUA, LIU ENJUN, SHI JIJUN, SUN LICHEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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creator	QI FEIFEI SUN LIZHI QI JIADONG GUO CHONGWU ZHANG HAIFENG ZHANG XIUTING REN GUOHUA LIU ENJUN SHI JIJUN SUN LICHEN
description	The invention discloses an astronavigation liquid medium vacuum leak detection method, which comprises a calibration system, a leak rate test system, a standard leak hole and an auxiliary air exhaust system, and is characterized in that the calibration system and the leak rate test system respectively comprise a first mechanical pump, a first electromagnetic valve, a vacuum gate valve, a first vacuum gauge and a quadrupole mass spectrometer; the calibration system further comprises a preceding-stage molecular pump, a main molecular pump, a pressure stabilizing chamber, a small air exhaust hole I and a calibration chamber; the leak rate test system also comprises a molecular pump 1, a vacuum container and a tested product. The standard leak hole comprises a hand valve I, a small air exhaust hole II, a hand valve II, a vacuum gauge II, a hand valve III, a working medium container and a hand valve IV; the auxiliary air exhaust system comprises a second molecular pump, a second electromagnetic valve and a second
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title	Vacuum leak detection method of liquid medium for space navigation
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