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What is the pressure inside the turbine casing?
a generator
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 absolute expansion of steam turbine?
it's the thermal expansion in the casing of hp or ip turbine can be noticed by journal or thrust bearing when moving <<
Why the steam turbine needs preheating before the operating?
there are stages, fixed blades on the turbine shell and rotating blades on the rotor. They are very close together sooo, because the steam enters at one end of the turbine it heats that area first and it expands the metal there faster than at the other end causing it to rub. if you heat it slowly the turbine casing and the rotor grow at ~ the same rate so the stages don't rub together. If you heat too quickly,by just admitting a high volume of steam, the rotor heats up to fast, because of it has less metal to heat up, it rubs the fixed blades. this is called going long (the rotor is longer than the tolerances between the fixed blades on the casing)
What is a steam turbine?
It is an engine.A steam turbine is a heat engine that uses the expansion of steam passing through stationary nozzles and blades on a shaft to turn the shaft. The steam can move through the turbine axially (one end of shaft to the other end), radially (shaft to outer casing), or tangentially (around the outer edges of the turbine wheel). In an impulse turbine, the steam is expanded in nozzles and pushes the blades. In a reaction turbine the steam is expanded in the nozzles AND in the blades, the reaction of the expansion of the steam pushes away from the blades spinning the wheel in the process. The expansion of the steam is necessary to increase its velocity through the turbine.
What happens if the main steam inlet temperature to turbine reduce beyond tripping limit?
flood the condenser and rip the fix and moving blades though the casing, also causing loss of vacume
What is casing expansion of steam turbine?
casing and shaft are made of alloy steel they are supposed to expand when heated (at/2 *length of turbine.).wherea is coefficient expansion of material.t=finaltemperature ( of casing or shat)-ambienttemperaturel=length of turbine in meter
What is steam turbine cylinder?
turbing casing
What is the pressure inside the turbine casing?
a generator
What occurs when the pressure of an expands and tears the casing of the explosive?
Fragmentation
What occurs when the pressure of an explosion expands and tears the casing?
Fragmentation
What occurs when the pressure of an explosion expands and tears the casing of?
Fragmentation
What occurs when pressure of an explosion expands and tears the casing of the explosive?
Fragmentation
What occurs when the pressure of an explosion expands and tears the casing of the explosives?
fragmentation
What occurs when the pressure of an explosion expands and tears the casing explosive?
Fragmentation
What occurs when the pressure of an explosion expands and the tears the casing of the explosive?
Fragmentation
What occurs when the pressure of an explosion expands and tears the casing of the explosion?
Fragmentation
