The application discloses a kind of double
carbon graphite sealing
assembly air
leakage rate test method and sealing fixture, including positioning ring;Positioning seat is installed in the center position of base;Sealing
barrel is installed on the circumferential position of base;Support ring is installed above sealing
barrel;The top of positioning seat is equipped with mandrel;Mandrel is used to cooperate with double
carbon graphite ring;Positioning ring is installed in the center position on support ring, and positioning ring is used to cooperate with the rear installation side of double
carbon graphite sealing
assembly;Support
barrel is installed on the circumferential position on support ring;Support barrel is equipped with sealing cover on the top;Sealing barrel cooperates with base, support ring and forms first sealed cavity;Support barrel cooperates with sealing cover, support ring and forms second sealed cavity;
Pipe joint is installed on sealing barrel and sealing cover;Air guide
pipe is installed on the side wall of support barrel;Air guide
pipe is connected with the
pipe joint of
gas supply structure, and the pipe joint of
gas supply structure is used to introduce and drain test import
airflow to the middle of double carbon
graphite ring.