Anti-vibration support of U-bend flow tubes in a nuclear steam g

Details Anti-vibration support of U-bend flow tubes in a nuclear steam g Anti-vibration support of U-bend flow tubes in a nuclear steam g

1990-07-27

1991-12-17

Rivell, John

Heat exchange

Resilient vibration damper isolating exchanger element

165162, F28F 700, F28D 716

Patent

active

050727869

ABSTRACT:
An apparatus and a method for eliminating the gap between a flow tube and a respective support in a U-bend of a nuclear steam generator whereby the flow tube is disposed in the correct position and whereby fretting, corrosion and vibration are substantially eliminated. Support bars are provided between the columns of tubes, and each support bar carries a plurality of springs. Each spring resiliently engages a respective tube thereby eliminating the gap between the tube and the respective support. Each spring further has an elastic constant which is larger than the bending elastic constant of the tube, and the spring flexibly accommodates deformation during insertion of the support bar thereby assuring ease of installation.

REFERENCES:
patent: 3789184 (1974-01-01), Piepers et al.
patent: 3929569 (1975-12-01), Piepers et al.
patent: 4010796 (1977-03-01), Scholtus
patent: 4105067 (1978-08-01), Bovagne
patent: 4570703 (1986-02-01), Ringsmuth et al.
patent: 4839951 (1989-06-01), Boula et al.
patent: 4860697 (1989-08-01), Malaval

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