초록 ▼

A leakage detection apparatus for drum wheels having a pair of plates which sealingly engage the wheel to define an inner first chamber under vacuum, a reciprocating container enveloping the engaged plates and wheel to define an annular helium chamber sharing the wheel as a common wall with the inne

A leakage detection apparatus for drum wheels having a pair of plates which sealingly engage the wheel to define an inner first chamber under vacuum, a reciprocating container enveloping the engaged plates and wheel to define an annular helium chamber sharing the wheel as a common wall with the inner first chamber, a probe gas introduced into the annular helium chamber, and a mass spectrometer, in gaseous communication with said inner first chamber scanning for a trace of the probe gas indicating the presence of a leak path in the structual integrity of the wheel. A method of use is also disclosed.

대표청구항 ▼

An apparatus for the detection of leakage in a drum wheel comprising, in combination: sealing means for sealing a wheel cavity of said drum wheel for creating an inner chamber within said wheel cavity; enveloping means having an open bottom for covering said drum wheel and for creating an annular ch

An apparatus for the detection of leakage in a drum wheel comprising, in combination: sealing means for sealing a wheel cavity of said drum wheel for creating an inner chamber within said wheel cavity; enveloping means having an open bottom for covering said drum wheel and for creating an annular chamber about said inner chamber; evacuating means in communication with said inner chamber for creating a vacuum within said inner chamber, said evacuating means including a first vacuum switch activated by a first vacuum level within said inner chamber, said activated first vacuum switch for initiating the premeasurement of a probe gas in a flow controlling means; supplying means penetrating said enveloping means for injecting said probe gas into aid annular chamber; valving means disposed within said evacuating means for controlling said vacuum in said apparatus and for capturing a mixture a sample from said inner chamber; and detecting means in gaseous communication with said inner chamber for analyzing said mixture sample and for detecting the presence of said probe gas wherein presence of said probe gas in said mixture sample indicates leakage through said drum wheel.