What Is A Multi-port Governor Valve? Why Is It Used?

1.	What Is A Multi-port Governor Valve? Why Is It Used?
Answer» In large turbines, a valve controls steam flow to groups of NOZZLES. The number of open valves controls the number of nozzles in USE according to the load. A bar-lift or cam arrangement operated by the governor opens and closes these valves in sequence. Such a DEVICE is a multi-port valve. Using nozzles at full steam PRESSURE is more efficient than THROTTLING the steam. In large turbines, a valve controls steam flow to groups of nozzles. The number of open valves controls the number of nozzles in use according to the load. A bar-lift or cam arrangement operated by the governor opens and closes these valves in sequence. Such a device is a multi-port valve. Using nozzles at full steam pressure is more efficient than throttling the steam.

Answer»

In large turbines, a valve controls steam flow to groups of NOZZLES. The number of open valves controls the number of nozzles in USE according to the load. A bar-lift or cam arrangement operated by the governor opens and closes these valves in sequence. Such a DEVICE is a multi-port valve. Using nozzles at full steam PRESSURE is more efficient than THROTTLING the steam.

In large turbines, a valve controls steam flow to groups of nozzles. The number of open valves controls the number of nozzles in use according to the load. A bar-lift or cam arrangement operated by the governor opens and closes these valves in sequence. Such a device is a multi-port valve. Using nozzles at full steam pressure is more efficient than throttling the steam.

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