| 摘要 |
FIELD: mechanical engineering; aeronautical and space engineering for filling inner chambers and sealing them up. SUBSTANCE: unit has cover, housing equipped with gas supply pipe union with passage extending to cylindrical surface, two packing rings which are used for sealing up the clearances between housing and cover over cylindrical surface; cover is mounted for axial displacement relative to housing and is provided with locking members; housing is provided with circular slots receiving the packing rings which are located on either side of passage outlet to cylindrical surface of housing; distance A between the nearest ends of slots is determined from relationship A > D+0.2 mm, where D is diameter of passage; cylindrical sealing surface of cover has length B satisfying the relationship B > C+0.1 mm, where C is distance between end of cylindrical surface of housing and far edge of slot opposite to above-mentioned end. EFFECT: enhanced efficiency. |
