FIELD: nuclear fusion engineering; nuclear fusion power units of tokamak type.
SUBSTANCE: proposed vacuum cover has plug with flange installed in port to form sealed joint with port projection. In addition cover is provided with bellows mounted for enclosing port projection; plug flange has two tiers, sealed joint with port projection being formed by bottom tier; top tier forms sealed joint with bellows flange; second flange of the latter is secured on port. Such design of port cover facilitates maintenance of internal devices and passage of cooling, control, and monitoring channels through plug.
EFFECT: reduced scope of mounting and dismounting operations.
1 cl, 3 dwg
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