What is turbine protection?
A multi-valve, multi-stage turbine protection system incorporates a mechanical overspeed device (trip pin) to shut down the turbine on overspeed (10 percent above maximum continuous speed). Today, most speed trip systems incorporate magnetic speed input signals and two out of three voting for increased reliability.
What is turbine overspeed trip?
Outdated Mechanical Trip Devices Should be Replaced! Background. The steam turbine overspeed event occurs when little or no energy is being consumed by the driven equipment, whether a generator, pump or compressor, and too much steam is provided to steam turbine.
What are the interlocks for steam turbine?
Protections & Interlocks in power plants
| Sl No. | Interlock description |
|---|---|
| 1 | Turbine trips on high main steam pressure |
| 2 | Turbine trips on low main steam pressure |
| 3 | Turbine trips on high main steam temperature |
| 4 | Turbine trips on low temperature |
Why does a turbine trip on low vacuum?
As the condenser back pressure increases it reduces the available pressure drop and enthalpy change across the turbine which reduces output. If the condenser back pressure gets too high (low vacuum?) it will trip the unit.
What is interlock and protection?
The interlock and protection system is used to ensure safety of equipment and personnel as well as stable operation of a unit. This system initiates automatic corrective actions to stabilize the unit quickly. The protection scheme is developed to trip the equipment automatically with or without time delay.
What are boiler interlocks?
It’s a wiring arrangement that prevents your boiler from heating your home when there’s no need for it, for example, if the temperature that you set on the thermostat has been reached. For combi boilers, interlock is usually achieved by using a room thermostat. This could include a standard or digital thermostat.
What is MFT in boiler?
MFT means Main Fuel Trip. It is basically a shut off valve. which shuts off the oil flow to the gun in a burner of a. boiler.It is acted when any of the trip interlocks of a. boiler is satisfied.
What is boiler protection?
The G5xxx Boiler Monitoring family provides a range of advanced systems for control and maintenance of all kinds of boilers. A common feature of all the systems is the dynamic load dependent monitoring. This allows an early diagnosis of problems under build up long before the trouble escalates.
What is meant by boiler trip?
Well a Boiler Trip is when an unusual operating condition occurs and a safety device such as a switch is used to shut the boiler down so the operator needs to investigate why the boiler tripped then perform maintenance or repair to clear the unsafe condition that caused the boiler trip so it does not repeat.
What are the main parts of a boiler?
What are the Main Components of a Commercial Boiler
- Burner. The burner is the part of the boiler where air mixes with the fuel source and combusts.
- Combustion Chamber.
- Heat Exchanger.
- Controls.
- Supply Lines and Return Lines.
- Circulator Pump.
- Exhaust Stack.
- Conclusion.
What is difference between boiler and steam generator?
A boiler, as the name suggests, boils the water before turning it into steam at subcritical pressure – the pressure at which bubbles can form. Steam generators, on the other hand, convert water into steam into steam without boiling at a super-critical pressure.