Device for fixing a perforated sheet against the perforated tube

Details Device for fixing a perforated sheet against the perforated tube Device for fixing a perforated sheet against the perforated tube

1987-03-12

1987-10-06

Davis, Jr., Albert W.

Heat exchange

With repair or assembly means

165174, 122406B, F28F 902

Patent

active

046976345

ABSTRACT:
A device for fixing a perforated sheet (8) against the perforated tube plate (1) of a heat exchanger having a bundle of tubes (4, 5), the perforated sheet (8) controlling the rate of fluid flow along the tubes, and the device comprising hollow pins (10) inserted in the ends of some of the tubes (4) and expanded therein, the hollow pins terminating outside the tubes with threaded ends (12) onto which respective nuts (15) are screwed for clamping the perforated sheet against the perforated tube plate, the nuts having heads including respective axial fluid-flow controlling bores (17).

REFERENCES:
patent: 130842 (1872-08-01), Butler
patent: 2143477 (1939-01-01), Dillon et al.
patent: 2164629 (1939-07-01), Sibley
patent: 2484904 (1949-10-01), Pennella
patent: 3563303 (1971-02-01), Gilli et al.
patent: 3707186 (1972-12-01), Zorrilla et al.
patent: 4133184 (1979-01-01), Bivins, Jr.
patent: 4607689 (1986-08-01), Mochida et al.

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