Power Plant Gyan

Here we study how a turbine convert the high pressure & temperature steam energy in to mechanical energy. A steam turbine basically consists of two elements or sets of elements. Nozzel Curved blade Steam turbines are used to convert the heat energy of the steam into mechanical energy. If the steam turbine drives a generator, then this mechanical energy will be converted into electrical energy. The steam turbine is a very simple machine with few moving parts. It is not unusual for a steam turbine to run for more than a year without shutdown.  While very reliable, the steam turbine generator is a complex machine with many components and supporting systems. The power plant is often described as an energy conversion factory in which the chemical energy in the fuel is converted into electrical energy. For conversion of chemical energy of fuel following block diagram is shows:- The function of the steam turbine is to convert the high pressure and temperatur

OBJECTIVE Auxiliary steam is the steam that is required for various auxiliary requirements in a power plant. A part of main steam is tapped off for auxiliary steam station from MS/CRH line, after pressure reducing and de-superheating up to 16 Kg/cm 2   & 320 °C. At the HT header (16 16 Kg/cm 2    & 320⁰C) and then at the LT header (16 Kg/cm2 & 210⁰C) through desuperheater b/w the HT & LT headers. Spray water quantity required for the temperature reduction of the steam is controlled by separate spray water valve (taken from CEP discharge). TYPES OF STATIONS System consists of  two auxiliary  steam pressure reducing and desuperheating stations (APRDS). High capacity PRDS (LTPRDS)  with tapping off steam from main steam line or CRH line . Low Capacity PRDS(LTPRDS)  from HT header. APRDS SERVICES Auxiliary steam system is designed to provide steam for following systems. 1:-  Turbine  &  Turbine auxiliaries . 2:-  Boiler auxiliaries . 3:-

Boiler is the heat source of steam for the turbine. In boiler water is a cooling medium in the boiler pressure part by absorbing the the heat.  If too little water is available in the boiler then inadequate cooling of metal parts and chance of damage to the pressure parts. If too much water is supplied to the boiler then steam can carry the water or water particles to the turbine & causes turbine damage. In boiler amount of water and levels are controlled by a station called as Feed Regulating Station (FRS) or Feed Control Station (FCS) . In FRS/FCS there are three control valves, which is arranged in parallel. In it two valves can handle 100% BMCR load and one can handle 30% BMCR load. Two valves of 100% are provided for redundancy. 30% capacity used for startup and shutdown condition. Each control valve consist its own motorized isolation valve. If feed water flow is not controlled by a single valve then any of 100% valve can operate with 30% valve. Both 100%

DEAERATOR IN THERMAL POWER PLANT  TABLE OF CONTENT  1:- Deaerator in thermal power plant 2:- Reason for use 3:- Deaerator working principle 4:- Working process  5:- Types of deaerator 6:- Condition must be fulfilled for successfull operation of the deaerator 7:- Causes to increase concentration of oxygen and carbon dioxide  8:- Some importan point related to deaerator DEAERATORS IN A THERMAL POWER PLANT 1:- Deaerators is a large, insulated tank, pressure vessels. 2:- One type of feed water heater is a contact type open heater. 3:- Purpose of deaerating the feed water (removal of carbon dioxide and oxygen from feed water). 4:- Mechanical deaeration is coupled with other external treatment aspects (chemical process), it provides the highest quality feed water for boiler use. 5:- Raise the temperature of the water (heating cold water to protect the boiler from thermal shock and prolong the boiler life). 6:- Economizing overall operation with stro

  The purposes of the Condensate system are to: Condense steam from the main turbine and TDBFP and collect steam drains in to the main condenser.   Remove non-condensable gases from the main condenser. Purify and preheat water prior to injection into the boiler. Supply  the  driving  head to  pump water  from  the  main  condenser  to  the boiler.   Provide injection  path  for  High Pressure  Coolant Injection system  to  the bpoler Provide injection path for Reactor Core Isolation Cooling system to the  boiler.   Provide a path for returning Reactor Water Cleanup system to the boiler. There are the following system involved in condensate system. CST Condenser Hotwell CEP Main ejector Gland steam condenser Deaerator level control valve  Excess return to CST CEP minimum re-circulation line Drain cooler LPH-1 LPH-2 LPH-3 Deaerator  FST LP heaters drains & vents LP drain flash tank HP drain flash tank  LP Heater The condensat

WELCOME YOU This blog is created for sharing the knowledge related to Power plant. Power plant is a system or combination of different sub system in which one form of energy is converted in to the electrical energy. Basically in a thermal power plant low grade of energy is converted in to the high grade of energy (electrical energy). There are different types of power plant in which upstream  energy forms are different but the downstream energy is only electrical energy. this electrical energy is transferred through different types (High voltage, medium voltage & low voltage) of grid.   A COAL FIRED THERMAL POWER PLANT