Device and method for underwater repair of hole of a nuclear reactor part
AssigneeFramatome
InventorsSerge Roillet, Julien Valero
Life of this patent
Estimating the term…
Abstract
A repair device for underwater repair of a hole in a nuclear reactor part includes a holder (32), a cutting tool (22) held by the holder (32) and having at least one cutting tooth (70) for remachining an inner surface of the hole. The cutting tool (22) has a suction channel (44) extending into the cutting tool (22) between at least one inlet opening (46) and at least one outlet opening (48), a drive shaft (34) for rotating the cutting tool (22), the drive shaft (34) being held by the holder (32), and a suction tube (36) connected to the holder (32) and fluidly connected to the outlet opening (48) of the suction channel (44).
Claims16
A repair device for the underwater repair of a hole of a nuclear reactor part by remachining the hole, the repair device comprising:
- a holder;
- a cutting tool held by the holder and having at least one cutting tooth for remachining an inner surface of the hole, the cutting tool having a suction channel extending into the cutting tool between at least one inlet opening and at least one outlet opening;
- a drive shaft for rotating the cutting tool, the drive shaft being held by the holder;
- and
- a suction tube connected to the holder and fluidly connected to the outlet opening of the suction channel,
- wherein the cutting tool comprises a cutting part and a drive part connected to the drive shaft, the outlet opening emerging in a recess of the drive shaft, the drive shaft having at least one lateral opening for the passage of the fluid from the inside of the recess toward the outside, the suction channel being connected to the holder in register with the lateral opening to suction the fluid through the lateral opening.
A repair device for the underwater repair of a hole of a nuclear reactor part by remachining the hole, the repair device comprising:
- a holder;
- a cutting tool held by the holder and having at least one cutting tooth for remachining an inner surface of the hole, the cutting tool having a suction channel extending into the cutting tool between at least one inlet opening and at least one outlet opening;
- a drive shaft for rotating the cutting tool, the drive shaft being held by the holder;
- and
- a suction tube connected to the holder and fluidly connected to the outlet opening of the suction channel,
- wherein the cutting tooth comprises a portion for machining a circular cylindrical hole and a portion for machining a frustoconical bevel at the inlet of the circular cylindrical hole.
A repair device for the underwater repair of a hole of a nuclear reactor part by remachining the hole, the repair device comprising:
- a holder;
- a cutting tool held by the holder and having at least one cutting tooth for remachining an inner surface of the hole, the cutting tool having a suction channel extending into the cutting tool between at least one inlet opening and at least one outlet opening;
- a drive shaft for rotating the cutting tool, the drive shaft being held by the holder;
- and
- a suction tube connected to the holder and fluidly connected to the outlet opening of the suction channel,
- further comprising a stop surface configured to abut against the part in which the hole to be repaired is arranged in order to limit the travel of the cutting tool in the hole to be repaired.
Dependencies are inferred from the claim text.