Method of and apparatus for cooling a seal for machinery

Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation

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60656, 415176, E01D 2508

Patent

active

057430942

ABSTRACT:
A seal heated by hot pressurized vapor is cooled by providing a chamber in which the seal is located and for containing vapor that leaks thereinto. The pressure in the chamber is reduced by connecting it to a source of low pressure; and liquid is supplied to the chamber at a pressure above the reduced pressure of the chamber and at a temperature below the temperature of vapor leaking into the chamber. The liquid is introduced into the chamber as droplets for contacting vapor that leaks thereinto thereby cooling the vapor and thus cooling the seal. The flow rate of the liquid is adjustable in accordance with the temperature of the liquid in the chamber.

REFERENCES:
patent: 3038318 (1962-06-01), Hanny
patent: 3213798 (1965-10-01), Carswell
patent: 4189156 (1980-02-01), Geary, Jr. et al.
patent: 4692090 (1987-09-01), Naka
patent: 4997340 (1991-03-01), Zinsmeyer et al.
patent: 5147015 (1992-09-01), Snuttjer et al.
patent: 5340272 (1994-08-01), Fehlau
English Language Abstract of JP 59-201542, Apr. 23, 1986.
European Search Report and Annex.

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