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US 2009/0154631 A1Published application
Hatch mechanical locking system
AssigneeWestinghouse Electric Corp.
InventorsRobert M. WEPFER, Christopher G. Pankiewicz-Nohr
Life of this patent
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Abstract
A locking mechanism for securing hatches internal to a steam generator that is made up of only mechanical locking elements with fully captured moving parts. The mechanism employs a locking pin with redundant mechanisms to secure the pin in the closed position. The moving parts of the device can be attached directly to a removable hatch so that installation and repairs that may be required can be performed outside of the pressure vessel of the steam generator.
Claims14
A pressure vessel for separating steam from condensate comprising:
- a generally horizontal deck plate within the pressure vessel defining an access opening extending between an upper surface of the deck plate and an undersurface;
- a removable plate for covering the access opening;
- a pin holder attached to either one of the deck plate or the removable plate;
- an elongated mechanical pin retractably attached to the pin holder for moving in a generally horizontal plane between a closed position and an open position;
- and
- a receiving socket attached to the other one of the deck plate or the removable plate for engaging the mechanical pin in its closed position.
3 more elements
Dependencies are inferred from the claim text.