Apparatus for sealing the leakage gap between the U-shaped bends

Details Apparatus for sealing the leakage gap between the U-shaped bends Apparatus for sealing the leakage gap between the U-shaped bends

1986-04-18

1988-04-05

Davis, Jr., Albert W.

Heat exchange

Resilient vibration damper isolating exchanger element

165 81, 165159, 165163, 165135, F28F 922, F28D 706

Patent

active

047352604

ABSTRACT:
Apparatus for effecting heat exchange between first and second fluids in a heat exchanger in which a first fluid is conveyed through a plurality of spaced U-shaped tubes assembled in a matrix of the heat exchanger, and a second fluid is conveyed around the tubes of the matrix in a direction perpendicular to the matrix so that heat exchange takes place between the first and second fluids. The U-shaped tubes have bends facing a guide wall of the heat exchanger and form a gap therebetween to permit relative movement of the tubes and the guide wall, for example, due to differential thermal expansion and vibration. Flow of the second fluid through the gap is blocked by a resilient sealing element which resiliently accommodates the relative movement of the tubes with respect to the guide wall and damps vibration. The sealing element can be a flexible mat of elastic metal felt.

REFERENCES:
patent: 1964256 (1934-06-01), Fahrenwald
patent: 2303247 (1942-11-01), Woods
patent: 3174301 (1965-03-01), Thornton et al.
patent: 3746083 (1973-07-01), Tiefenbacher
patent: 4102602 (1978-07-01), Rottenkolber
patent: 4216937 (1980-08-01), Bridgwell et al.
patent: 4475586 (1984-10-01), Grieb et al.
patent: 4586564 (1986-05-01), Hagemeister

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