초록 ▼

An underwater inspection/repair apparatus comprises a sealing device provided around an opening portion of a watertight vessel, a pushing mechanism provided to the watertight vessel, a water discharge pump provided to the watertight vessel for discharging water in an inside of the watertight vessel,

An underwater inspection/repair apparatus comprises a sealing device provided around an opening portion of a watertight vessel, a pushing mechanism provided to the watertight vessel, a water discharge pump provided to the watertight vessel for discharging water in an inside of the watertight vessel, and a compressed air supplying device for supplying a compressed air into the inside of the watertight vessel. A top end of the sealing device is pushed against an inner wall surface of the reactor vessel by a reaction force generated when the pushing member of the pushing mechanism is pushed against the reactor internal structure, so that the inside of the watertight vessel can be isolated in a watertight manner. The pneumatic water discharge pump includes a pneumatic pressure cylinder driven by a pneumatic pressure, and a water discharge cylinder cooperated with the pneumatic pressure cylinder. Accordingly, there can be provided an underwater inspection/repair apparatus which is able to conduct inspection/repair operations without a discharge of a core water from a reactor vessel.

대표청구항 ▼

[ What is claimed is:] [1.] An underwater inspection/repair apparatus comprising:a watertight vessel formed by a hollow member;an opening portion formed on the watertight vessel;a sealing device provided around the opening portion;a pushing mechanism provided to the watertight vessel;a water dischar

[ What is claimed is:] [1.] An underwater inspection/repair apparatus comprising:a watertight vessel formed by a hollow member;an opening portion formed on the watertight vessel;a sealing device provided around the opening portion;a pushing mechanism provided to the watertight vessel;a water discharge pump for discharging water in an inside of the watertight vessel; anda compressed air supplying means for supplying a compressed air into the inside of the watertight vessel;wherein the pushing mechanism has a pushing member which can be pushed against a supporting structure positioned behind a back surface of the sealing device, and a top end portion of the sealing device is pushed against an inner wall surface of a water vessel as an inspection object by a reaction force generated when the pushing member is pushed against the supporting structure, whereby the inside and an outside of the watertight vessel can be isolated in a watertight manner so that an inside condition of the watertight vessel can be changed and maintained in a dry condition.