Vibration-inhibiting bar for a steam generator tube bundle
AssigneeAreva Np
InventorClaude CRENN
Life of this patent
Estimating the term…
Abstract
A vibration-inhibiting bar is provided that is interposed between bends of the tubes of two adjacent banks of tubes of a U tube bundle of a steam generator and includes at least one internal element, referred to as a damping element, designed to mechanically damp the vibrations of the tubes; and at least one external element, referred to as percussion element, in contact with the damping element, the percussion element being designed to be in contact with the bends of the tubes of the bundle.
Claims11
An anti-vibration bar able to be interposed between the bends of the tubes of two adjacent banks of tubes of a U-shaped tube bundle of a steam generator, comprising:
- at least one internal element, referred to as a damping element, adapted to mechanically dampen the vibrations of the tubes;
- at least one external element, referred to as a percussion element, in contact with said damping element, said percussion element being configured to be in contact with bends of the tubes of the bundle.
A steam generator comprising:
- a bundle of U-folded tubes, each tube having a semi-circular bend, the tubes being arranged in several banks, each bank including tubes the bends of which have radii different from one another and are placed adjacent in a same vertical plane, the bends forming a substantially hemispheric upper part of the bundle referred to as a tube bend region;
- and
- a anti-vibration bar according to one of the preceding claims interposed between the bends of two adjacent banks of tubes and placed in a radial direction of the tube bend region.
Dependencies are inferred from the claim text.