Patent ID: 11873921
Assignee: ELECTRIC POWER RESEARCH INSTITUTE, INC.
Field: Civil engineering (Other fields)
Classification: CPC F  B  E  G  Y | IPC F  G

Claim 2:
3. A system for attemperating a gas stream generated by a power plant, comprising:
an injection valve for injecting a fluid into a gas stream generated by a power plant to attemperate the gas stream;
a metering valve for feeding the fluid to the injection valve through a feed line;
a discharge valve connected to said metering valve to discharge fluid from the feed line when the injection valve and the metering valve are closed, wherein said discharge valve is actuated by said metering valve;
a servo-valve for opening and closing the metering valve; and
a tube having a first end connected to said servo-valve and an opposite second end for connection to said metering valve, wherein said tube has a predetermined length to thermally isolate said actuator and said servo-valve from said metering valve to prevent an increase in a temperature of said actuator caused by heat from said metering valve above an operating temperature of said actuator.