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governor senses the speed of spindle of engine and controls the mechanism of opening and closing of throttle valve
governor has 3 modes of operation 1.SPEED CONTROL MODE-before sychronisation the governor runs in speed control mode.guide vanes open up and the turbine runs in the rated speed.when the governor gets connected to the grid that is when it gets synchronised then the speed control mode terminates. 2.OPENING MODE-load is increased in this mode and teh machine runs in the rated speed only. 3.POWER CONTROL MODE-it has two modes.joint controller and indivisual controller mode.in joint controller mode all the machine works all together and in the indivisual controller one setup point is given to the governor and the guide vanes vary accordingly
inconsistent load will cause steam turbine hunting.
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.
Power is supplied to the governor from the engine's output shaft by a belt or chain connected to the lower belt wheel. The governor is connected to a throttle valve that regulates the flow of working fluid supplying the prime mover. As the speed of the prime mover increases, the central spindle of the governor rotates at a faster rate and the kinetic energy of the balls increases. This allows the two masses on lever arms to move outwards and upwards against gravity. If the motion goes far enough, this motion causes the lever arms to pull down on a thrust bearing, which moves a beam linkage, which reduces the aperture of a throttle valve. The rate of working-fluid entering the cylinder is thus reduced and the speed of the prime mover is controlled, preventing over-speeding.
advantage of hartnell governer
Wayne A. Proell has written: 'A handbook of space flight' -- subject(s): Space flight
1969
governor
Deputy to the Governor or deputy governor Deputy to the Governor or deputy governor Deputy to the Governor or deputy governor
The governor's cabinet.
The Lieutenant Governor.
The Lieutenant Governor of Illinois is next in line to Governor of Illinois.If speaking time-wise, this could be the Governor-elect, or a candidate for Governor, who will eventually become Governor-elect then Governor.
That would be the "Lieutenant Governor".
The governor lives in the governor's mansion.
There are eleven permanent representatives of Her Majesty the Queen of Canada:Governor General of CanadaLieutenant Governor of OntarioLieutenant Governor of QuébecLieutenant Governor of Nova ScotiaLieutenant Governor of New BrunswickLieutenant Governor of ManitobaLieutenant Governor of British ColumbiaLieutenant Governor of AlbertaLieutenant Governor of SaskatchewanLieutenant Governor of Prince Edward IslandLieutenant Governor of Newfoundland and Labrador
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