| 摘要 |
<p>FIELD: machine building. ^ SUBSTANCE: vessel consists of plastic shell, and of metallic flanges in zone of its pole holes and having leaf. External surface of the leaf contacts internal surface of plastic shell through an adhesion under-layer. Further, the vessel consists of a docking ring connected with the leaf on a side of its internal surface and having a key groove, of hatches with support surface, of keys set in the key groove and contacting support surface of the hatch, and of a sealing unit. Also, surface of the key groove at least of one of the flanges has a shape of a part of tore formed with rotation of generatrix of circumference arc around a guide of circumference, radius of which exceeds radius of a pole hole of the plastic shell. The keys correspond to sectors of a rotation body formed with a conic ferrule with tore connected to it and conjugated with the key groove. The conic ferrule contacts support surface of the hatch with an edge made on its small diametre. ^ EFFECT: raised strength of vessel, reduced weight and cost of manufacture. ^ 6 cl, 2 dwg</p> |
