초록 ▼

A steam turbine system which includes a steam generator and a steam bypass path for bypassing steam around the turbine. The outlet throttle pressure of the steam generator is controlled by controlling admission of steam into the bypass path by means of a bypass valve. A desired throttle pressure set

A steam turbine system which includes a steam generator and a steam bypass path for bypassing steam around the turbine. The outlet throttle pressure of the steam generator is controlled by controlling admission of steam into the bypass path by means of a bypass valve. A desired throttle pressure set point is generated which is independent of steam flow and this set point is compared with the actual throttle pressure for governing the bypass valve during turbine start-up. When the turbine is fully operational the bypass valve control is effected by a comparison of the actual throttle pressure with the desired throttle pressure set point plus some bias.

대표청구항 ▼

Apparatus for controlling the outlet throttle pressure of a steam generator in a steam turbine system having a steam bypass path for bypassing said turbine, comprising: (A) valve means in said bypass path for controlling the introduction of steam into said bypass path; (B) means for generating a des

Apparatus for controlling the outlet throttle pressure of a steam generator in a steam turbine system having a steam bypass path for bypassing said turbine, comprising: (A) valve means in said bypass path for controlling the introduction of steam into said bypass path; (B) means for generating a desired throttle pressure set point signal which is variable as a function of load and independent of steam flow; (C) means for measuring said throttle pressure of said steam generator for providing an actual throttle pressure signal; and (D) control means for governing operation of said valve means as a function of said actual throttle pressure signal and said desired throttle pressure set point signal.