F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
122/147
F22B 37/24 (2006.01) F22B 37/20 (2006.01) F28F 9/013 (2006.01)
Patent
CA 1255984
-15- ABSTRACT OF THE DISCLOSURE A method of forming and installing anti-vibration bars into a tube bundle of a steam genera- tor is disclosed. The tube bundle comprises rows of tubes, each tube carrying a high temperature coolant. Each of the resultant anti-vibration bars has a tubular configuration and is disposed between adjacent rows of the tube bundle for stabilizing the tubes against vibration caused by fluids recirculating at high velocities through the steam generator. The method of this invention com- prises the steps of inserting at least one anti-vibration bar between adjacent rows of the tube bundle and applying a pressurized fluid in the anti-vibration bar, thus ex- panding the anti-vibration bar to contact the tubes of the adjacent rows and to make a series of indentations there- in. Typically, the pressure of the fluid is increased incrementally up to a maximum level set such that the con- figuration of the steam generator tubes is not deformed. The resultant anti-vibration bar is a hollow member and has first and second series of indentations disposed on opposing sides thereof and spaced from each other a uni- form distance corresponding to the spacing between adja- cent tubes of a row. The indentations are configured sim- ilarly to the shape of the tubes to provide intimate contact there between and to support the tubes against vibration.
492665
Gowda Byre V.
Wepfer Robert M.
Wilson Robert M.
Oldham And Company
Westinghouse Electric Corporation
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