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What to do about turbine rotor differential expansion?
my LP turbine differential expansion increase ,when rated gland steam temperature maintain.
How do you lower turbine differential expansion?
by controlling main steam flow
What is expansion turbine?
differential expansion is refer to differential distance between rotor blade and fix blade.rotor expand toward generator and casing expand toward control valve.when temperature increase ,expansion in casing and rotor.so rotor mass is less than casing which rotor expand more than casing.
What is positive differential expansion of steam turbine?
Differential expansion means gap between fixed Blade & rotating blase of a turbine.. When steam enters into the turbine, rotor tends to expand towards generator side & casing tends to expand towards control valve side. If differential expansion increase then there is a possibility of reducing axial gap between rotor & fixed blades. When differential expansion is positive its means rotor expand more than the casing expansion. There is a limit upto +ve 5. If increases than +ve 5 it means we have to check front side tie rods status.
What are the three layers formed during gastrulation and what do they make?
Cell movement (differential expansion)
What is the advantage of bimetal thermometer?
A biometallic thermometer measures temperature. It uses a differential thermal expansion of metals that are bonded together into a strip. Another name for these thermometers is differential thermometer.
What has the author Hugh Raymond Beveridge written?
Hugh Raymond Beveridge has written: 'An expansion problem connected with a system of partial differential equations' -- subject(s): Partial Differential equations
What is negative differential expansion of steam turbine?
Negative differential expansion in a steam turbine refers to a condition where the thermal expansion of the turbine components is not uniform, causing the rotor and casing to expand at different rates. This can lead to increased stresses and potential misalignment, negatively impacting the turbine's efficiency and longevity. Proper design and operational practices are essential to mitigate these effects and ensure optimal performance.
Turbine differential expansion should be positive or negative?
Turbine diff expansion can be positive or negative and depends on the convention used. The usual convention is that positive expansion is rotor expanding faster (hotter) than fixed components. Expansion is dictated by steam flow, gland steam temperatures etc
How to control positive differential expansion of IP turbine?
To control positive differential expansion in an industrial steam turbine (IP turbine), it's essential to manage the temperature and pressure conditions effectively. This can be achieved by implementing proper thermal insulation, using controlled heating or cooling systems, and ensuring that the turbine operates within its design parameters. Additionally, regular monitoring of thermal expansion and alignment adjustments can help maintain optimal performance and prevent mechanical stress. Proper maintenance and regular inspections are also crucial to address any potential issues early on.
Why would it be easy to crack a glass bottle when filled with water and subjected to a flame?
The temperature contrasts would cause differential expansion of the bottle which, being brittle, would cause the glass to crack.
What happens to the bimetallic strip when the iron is hot?
When the iron is hot, the bimetallic strip will bend towards the iron due to differential expansion of the two metals in the strip. This bending occurs because the metal with higher thermal expansion coefficient will expand more, causing the strip to curve towards that side.
