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The trip logic therefore includes a lockout which must be manually reset before the turbine valves can be opened again.
All sorts of devices are used but most commonly a hydraulic valve which isolates oil from the stop valves. It is separate from the trip solonoid but may be part of the overspeed trip hydraulics
It was common for the hydraulic valve to have a mechanism referred to as a latch because once it opened it stayed open until the oil pressure was lost again. In electrical terms it is a seal in relay
Resetting this device is called latching the turbine
What else can I help you with?
What is meant by frame classification of gas turbine?
frame classification means mainly depended the with standing temperature of the gas turbine casing.
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 HP and LP turbine expansion?
HP Turbine is High Performance Turbine LP Turbine is Low Performance Turbine
What is the wheel chamber pressure in turbine?
Resistance offered by turbine to the steam
What is the differences between pelton turbine and kaplan turbine?
pelton turbines are suited to high head,low flow application but kaplan turbine are used for low head and a large amount of discharge needed. kaplan turbines are expensive to design,manufacture and install as compared to pelton turbine but operate for decades.
What is meant by frame classification of gas turbine?
frame classification means mainly depended the with standing temperature of the gas turbine casing.
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.
Define latching current in scr?
Latching Current is the minimum current needed on the gate to fire or trigger an SCR.
Why is the doorknob not latching properly?
The doorknob may not be latching properly due to misalignment, wear and tear, or a loose screw.
What is meant by latch?
CommentsThe protection of a turbine requires a device which ensures the turbine does not automatically restart once a protective trip resets. EG if an overspeed trip occurs you do not want the turbine to resume operation as soon as it slows down below trip speed as it could cycle into overspeed again and continue repeating the cycle. The trip logic therefore includes a lockout which must be manually reset before the turbine valves can be opened again.All sorts of devices are used but most commonly a hydraulic valve which isolates oil from the stop valves. It is separate from the trip solonoid but may be part of the overspeed trip hydraulicsIt was common for the hydraulic valve to have a mechanism referred to as a latch because once it opened it stayed open until the oil pressure was lost again. In electrical terms it is a seal in relayResetting this device is called latching the turbine
How do you calculate holding current of scr when latching current is given?
we know that ratio of holding current to latching current in scr is 0.4.
What is meant by latching in microprocessors?
It is the time period in the clock cycle in which the signal on the bus must be the valid expected data. ie. The stable period of the data transmission that will then be loaded into the microprocessor as the actual data.
Why is the door handle not latching properly?
The door handle may not be latching properly due to wear and tear, misalignment, or a faulty latch mechanism.
Why is the door knob not latching properly?
The door knob may not be latching properly due to misalignment, loose screws, or a worn-out latch mechanism.
What is meant by pitch angle in wind turbine?
Pitch angle in a wind turbine refers to the angle of the rotor blades relative to the oncoming wind. By adjusting the pitch angle, the turbine can regulate the amount of wind captured and optimize energy production. Changing the pitch angle allows the turbine to operate efficiently in varying wind conditions, maximizing energy output.
What is the meaning of stop latching?
Stop hanging on
Why is the door not latching closed properly?
The door may not be latching properly due to misalignment of the latch mechanism, a worn-out latch, or a problem with the door frame.
