Mell What is turbine protection system?
The Mitsubishi Electric Turbine Protection System (TPS) provides an additional independent protection function for the steam turbine and generator. The TPS detects undesirable operating conditions and initiates trips to avoid damaging the steam turbine.
What are the 3 types of steam turbine?
Steam Turbines. Three basic types of steam turbine are used to generate power as a by-product of process or exhaust steamml: condensing, pass-out condensing, and back-pressure.
What are the safety components of a steam turbine?
A steam turbine installation includes a safety system located in the steam flow path having a stop valve located in the steam flow path upstream of the turbine and a vacuum break valve located in the stream flow path downstream of the turbine, and a combined regulating and safety device connected to the turbine …
What are the types of steam turbine?
The following types of steam turbines are available for private/thermal power generation plants.
- Small/Mid-sized Condensing Turbines.
- Extraction-condensing Turbines.
- Extraction Back-pressure Turbines.
- Mixed-pressure Turbines.
- Geared Turbines.
What are the interlocks for steam turbine?
Interlocks: Are the programmed or hardwired control systems to protect systems and improve the operation reliability. Protections: Are the programmed or hardwired control systems to protect the equipments, man power and systems from failure/harm.
What is tripping of turbine?
A turbine trip is the emergency shutdown of a power-generation turbine due to unexpected events. Many events can cause a turbine trip, including: turbine overspeed condition where the turbine accelerates over its design speed, typically by 10% low vacuum in the secondary cooling loop, or condenser.
What is steam turbine and how it works?
A Steam Turbine is a mechanical device that extracts thermal energy from pressurized steam and transforms it into mechanical work. As hot, gaseous steam flows past the turbine’ spinning blades, steam expands and cools, giving off most of the energy it contains. This steam spins the blades continuously.
What is difference between 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 is interlock protection?
In most applications, an interlock system is used to prevent to harm to persons or damage to machines. Physical controls are engineered to contain hazardous energy, an interlock sensor detects potentially dangerous changes in state, and the interlock reduces risk of injury or damage.
How does a steam turbine control system work?
The system can automatically control a steam turbine in standard and emergency modes (of generation unit and of the power system), while monitoring load, live-steam pressure, positions of the control valves, signals from control devices at power unit/station/system.
How is the core of a steam turbine treated?
The core treatment process at many plants for high-purity water production is, following suitable pretreatment methods, two-pass reverse osmosis with either mixed-bed ion exchange or electrodeionization polishing of the RO effluent.
What are the different types of turbine protective devices?
Two types of trips S.No DESCRIPTION Alarm Trip 19 Alternator NDE Bearing 100u 180u 20 Turbine Casing Expansion 20mm 25mm 21 Turbine Differential Expansion; Towards +2.3mm +3mm 22 Turbine Differential Expansion; Away fro -1.6mm -2.5mm
Why do steam turbines need Pure Makeup water?
Because steam generating power plants, both conventional units and heat recovery steam generators (HRSGs), operate at high temperatures and pressures, very pure makeup water is a requirement to prevent corrosion and scaling.