The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1981
Filed:
Dec. 13, 1978
Paul W Viscovich, Swedesboro, NJ (US);
Moti T Khemlani, West Chester, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
At least one heat exchanger section including a conventional heat exchanger is disposed in a dual purpose steam turbine power plant to utilize steam extracted from the steam turbine to one section of the heat exchanger for the purposes of heating process fluid of an industrial process which is conducted through another section of the heat exchanger. The heat exchanger section disclosed herein is comprised of apparatus for controlling the pressure of the extracted turbine steam conducted through the one section of the heat exchanger by regulating the temperature of the industrial fluid supplied to the other section of the heat exchanger. More specifically, the heat exchanger section includes at least one conduit path for returning heated process fluid from an output end to an input end of the heat exchanger section to mix with the process fluid supplied at the input end. A flow control valve is disposed in the conduit path for regulating the flow of returned fluid to the input end. A pressure controller, comprising: a means for generating a signal representative of the pressure of the extracted turbine steam conducted through the heat exchanger; means for generating an error signal between a desired pressure set point signal and the pressure representative signal; and means for controlling the flow control valve as a function of the error signal to converge the error signal to substantially zero, maintains the pressure of the extracted steam conducted through the heat exchanger substantially at its desired pressure set point.