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Why upon high axial displacement of steam turbine vacuum breaker opens?
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What is positive axial displacement of steam turbine?
axial shift of a steam turbine is the shifting of turbine rotor in the forward and backward direction due to steam thrust on blades of rotor.
What is use of thrust pad in steam turbine?
Thrust pads are used to protect the steam turbine rotor from damage due to axial displacement due to axial thrust created by entry of steam in the turbine. generaly the pads clearence is 0.45mm for a bearing size 250mm.
What is difference between radial flow turbine and axial flow turbine?
in a radial flow turbine the steam enters the turbine in the direction of its radius and leaves it in the direction of the axis of the shaft. in a axial flow turbine the steam enters the turbine in the direction of the axis of the shaft and leaves the turbine in the same direction.
Which type of rotary compressor used in gas turbine?
Rotating axial compressor.
Disadvantages of centrifugal compressor in gas turbine?
This relationship is the reason advances in turbines and axial compressors often find their way cutaway showing an axi-centrifugal compressor gas turbine.
What is meant by axial displacement in steam turbine?
Axial displacement is the motion along the shaft of the turbine caused by the force exerted by the steam or by the thermal expansion of the shaft and casing.
What is positive axial displacement of steam turbine?
axial shift of a steam turbine is the shifting of turbine rotor in the forward and backward direction due to steam thrust on blades of rotor.
What is use of thrust pad in steam turbine?
Thrust pads are used to protect the steam turbine rotor from damage due to axial displacement due to axial thrust created by entry of steam in the turbine. generaly the pads clearence is 0.45mm for a bearing size 250mm.
Where thrust bearing located in steam turbine?
The thrust pads will be there at the front or non drive end of the turbine side....These are usually used to limit the axial displacement of the rotor( Means to minimize the movement of rotor axially in order to maintain the axial clearance between the moving blades and the fixed blades of steam turbine rotor).....
Reasons of positive axial shift in steam turbine?
Sudden change of load Sudden drop of vacuum Sudden drop of Main steam temperature.
What is difference between radial flow turbine and axial flow turbine?
in a radial flow turbine the steam enters the turbine in the direction of its radius and leaves it in the direction of the axis of the shaft. in a axial flow turbine the steam enters the turbine in the direction of the axis of the shaft and leaves the turbine in the same direction.
Designing an axial fan for aircraft?
what do you mean? axial compressor (or) axial turbine? Their missions are different. Design for axial compressor or turbine, must be consider their performance. The performance is characterized by - pressure ratio, rotational speed and efficiency. The details of how to design axial fan, are very complex.
Why tripping value of axial shift of steam turbine is more than turbine rotor float?
axial shift depends upon the gap between rotot blade and fixed blade , not on float
Which type of rotary compressor used in gas turbine?
Rotating axial compressor.
Working princieple of Francis turbine?
It is a radial flow axial turbine . It works on the principle to convert pressure energy into kinetic energy.
What is the length of an blade for a gas turbine?
The length of a blade depends on the style (impulse or reaction), the overall size of the turbine, whether it is an axial flow or radial flow turbine, and where the blade is located within turbine of an axial flow turbine. One thing that is constant: the length of the blade increases from the steam or gas inlet to the discharge of the unit. The profile will gradually increase in diameter from inlet to discharge.
What is the difference between radial displacement and axial displacement?
Hey, the difference is quite clear! Radial is the distance between the two shaft axis and is quantified by measuring the radial distance between the centerline of one shaft if it were to be extended to overlap the other, but Axial misalignment is the variation in axial distance between the shafts of the driving and driven machinery. Good luck honey...
