FIELD: mechanical engineering.
SUBSTANCE: invention relates to devices for servicing and repairing of nuclear power stations. Proposed device for sealing and unsealing of head tank covers, containing N stud pull out members in form of hydraulic jacks connected hydraulically to each other, each including at least one hydraulic cylinder and one hollow piston, hollow support cylinder installed by lower end face over head tank cover, tie-rod passing inside piston and support cylinder and secured on stud in process of pulling out, is furnished with housing common for all N hydraulic jacks connected with upper ends and tie-rods and including N hydraulic cylinders. Hollow support cylinders are made movable relative to common housing, upper end face of hollow support cylinders are connected with lower end faces of hollow pistons.
EFFECT: possibility to compensate for difference in mounting levels of nuts fastening head tank cover, provision of each loads on studs and their equal elongation at pulling out within tolerable limits.
3 cl, 2 dwg
| Title | Year | Author | Number |
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|
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