Steam generator tube support

Details Steam generator tube support Steam generator tube support

1984-11-13

1987-12-01

Davis, Jr., Albert W.

Heat exchange

Casing or tank enclosed conduit assembly

With support in casing

122510, 165159, F28F 900

Patent

active

047097566

ABSTRACT:
A tube support plate is disclosed for supporting a plurality of tubes with reduced vibration in a nuclear steam generator. The support plate has a plurality of holes disposed therethrough in a regular array. Each hole has an axis, an interior surface and a plurality of lands supported on the interior surface and extending towards the axis. The support plate has a given thickness as taken along the hole axis, and each of the lands has a tapered surface for facilitating tube insertion. The method of forming the tube support plate comprises a first step of forming each of the holes through the support plate with a first cylindrical portion of a first diameter and a second cylindrical portion of a second diameter less than the first diameter. Next, portions of the second cylindrical portion are removed in a second step to form a plurality of lands having exposed ends supporting a tube within the hole.

REFERENCES:
patent: 1992504 (1935-02-01), Penniman
patent: 2805049 (1957-09-01), Katholi
patent: 3589438 (1971-06-01), Boorman
patent: 3841272 (1974-10-01), Mayer et al.
patent: 3940314 (1976-02-01), Knodler et al.
patent: 4120350 (1978-10-01), Norton
patent: 4204305 (1980-05-01), Norton
patent: 4285396 (1981-08-01), Schwoerer et al.
patent: 4576228 (1986-03-01), Glatthorn

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