Urgently seeking diagrams of the production process of a thermal power plant.

Sorry, no diagrams Here is a description of the basic production process of steam turbine power generation.　The main fuels for thermal power plants are coal and petroleum (mainly heavy oil and natural gas). China's thermal power plants are mainly coal-fired, and in the past there have been a number of oil-fired power plants, the current policy is to try to compress the oil-burning power plants, and all new power plants burn coal.　　Thermal power plant consists of three main equipment - boiler, turbine, generator and the corresponding auxiliary equipment, they are connected through the pipeline or line constitutes the production of the main system, i.e., combustion system, steam system and electrical system. The production process is summarized as follows.　　1. Combustion system The combustion system, as shown in Figure 1-l, includes the combustion part of the boiler and the coal conveying, ash removing and flue gas discharging system. <THSCOPE=COL> Coal is conveyed by belt to the coal hopper in the boiler workshop, and enters the coal mill to be ground into coal powder, and then it is sprayed into the furnace with the air which is preheated by the preheater to be combusted, and the chemical energy of the coal is converted into heat energy, and the flue gas, after the ash is removed by the dust collector, is drawn out by the induced draft fan, and then discharged into the atmosphere through the tall chimney. The slag and the fine ash in the lower part of the dust collector are discharged to the ash field by the ash pump.　　2. Steam and water system The flow of steam and water system is shown in Figure 1-2, including boiler, turbine, condenser and feed pumps and other components of steam circulation and water treatment system, cooling water system, etc.. <THSCOPE=COL> Water is heated in the boiler and evaporated into steam, which is further heated by the superheater to become superheated steam with specified pressure and temperature, and then sent to the turbine through the pipeline.　　In the turbine, the steam expands continuously, flows at high speed, and impacts the rotor of the turbine, rotates at rated speed (3000r/min), converts thermal energy into mechanical energy, and drives the generator coaxial with the turbine to generate electricity.　　During the expansion process, the pressure and temperature of the steam are continuously reduced. The steam is discharged from the lower part of the turbine after doing work. The discharged steam is called spent steam, and it is discharged into the condenser. In the condenser, the spent steam from the turbine is cooled by cooling water and condenses into water.　　The condensed water in the lower part of the condenser is pressurized by the condensate pump and then enters the low-pressure heater and deaerator to increase the water temperature and remove the oxygen in the water (to prevent corrosion of the furnace tubes, etc.), and then is further pressurized by the feed pump, and then enters the high-pressure heater to return to the boiler, completing the cycle of water-steam-water. The condensate after the feed pump is called feed water.　　Steam and condensate in the steam system in the cycle process there is always some loss, therefore, it must be constantly replenished to the feed water system after chemical treatment of water. Supplementary feed water into the deaerator, with the condensate with a piece of water pump into the boiler.　　3. Electrical system The electrical system is shown in Figure 1-3, including the generator, excitation system, plant power system and step-up substation. <THSCOPE=COL> generator end voltage and current varies with its capacity, its voltage is generally between 10 ~ 20kV, the current can be up to thousands of amps to 20kA. Therefore, the generator sends out the electricity, generally by the main transformer voltage, through the substation high-voltage electrical equipment and transmission lines to the power grid. A very small part of the electricity, through the plant transformer to reduce the voltage, through the plant power distribution devices and cables for the plant fans, pumps and other auxiliary equipment and lighting and other power.