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The basic production process is: when the fuel is burned, the water is heated to generate steam, and the chemical energy of the fuel can be converted into heat energy. Steam pressure drives the turbine to spin and heat energy into mechanical energy; The turbine then spins the generator to turn the mechanical energy into electricity.
The basic system is as follows:
Soda system
Soda system of coal-fired power plants is made up of boiler, steam turbine, condenser, high and low pressure heater, condensate pumps and feed water pump and so on, it includes soft drinks, chemical water treatment and cooling system, etc. The water is heated to steam in the boiler, heated by the heater and turned into superheated steam, and then through the main steam pipe into the turbine. As the steam continues to expand, the high-speed steam pushes the turbine blades to turn and drive the generator. In order to further improve its thermal efficiency, some steam from some intermediate stage of the steam turbine is used to heat the water supply. In the modern large steam turbine unit, this feed water is used to recycle heat.
In addition, in the ultrahigh pressure unit also adopts reheat cycle, where did a Duan Gong high-pressure steam from steam turbine cylinder export will be done work out all of the steam, sent to the reheat steam boiler heating after the introduction of steam turbine in the intermediate pressure cylinder, continue expanding power of the steam pressure cylinder is sent out, and then into the low pressure cylinder to continue to work. In the process of continuous work of steam, the steam pressure and temperature are kept decreasing. Finally, the condenser is discharged into the condenser and cooled by cooling water, and condensed into water. Condensate is concentrated in the lower part of the condenser by the condensate pump until the low pressure heater heating again after deaerator oxygen, feed water pump after preheating deoxidization water sent to the high pressure heater, after heating, the hot water in boiler and heating water and superheated steam in the superheater, sent to the steam turbine to do work. This is a continuous process of doing work. In soda system of steam and condensate, as many dredge pipe and pass many valve equipment, thus inevitably produce the phenomenon such as run, run, drip, leak, these phenomena will be more or less to cause the loss of water, so we must continuously added in to the system through chemical processing of demineralized water, add the make-up water are usually into the deaerator.
Combustion system
The combustion system is composed of coal, grinding coal, fine separation, powder, powder, boiler, dust removal and desulfurization. Is composed of belt conveyor from coal to coal by electromagnet, coal crusher between coal scuttle, repass coal feeder into the flour mill, grinding fine pulverized coal by air preheater hot air, will play to pulverized coal separator thickness, thickness pulverized coal separator will be qualified (not qualified pulverized coal to coal mill), after a row of powder machine powder sent to the warehouse, for pulverized coal powder machine will be into the burner to the boiler combustion. The smoke is sent to the desulphurization device through the dust removal of the dust, and the gas through the slurry is sent to the pipe to be discharged into the sky by the suction fan.
Power generation systems
The power generation system is composed of the auxiliary exciter, the excitation disk, the main exciter (standby exciter), the generator, the transformer, the high voltage circuit breaker, the booster station, the distribution device, etc. Power generation is by vice exciter (permanent magnet machine) issued a high frequency current, the electric currents generated by vice exciter after excitation rectifier, again sent to the main exciter, after sending the electric main exciter through magnetic switch voltage regulator and destroy through a carbon brush to the rotor of the generator. By rotating the stator winding induction generator rotor current, a powerful electric current through the generator outlet points two road, all the way to the auxiliary power transformer, the other is all the way to the SF6 high voltage circuit breaker, by SF6 high voltage circuit breaker to the grid.
The basic system is as follows:
Soda system
Soda system of coal-fired power plants is made up of boiler, steam turbine, condenser, high and low pressure heater, condensate pumps and feed water pump and so on, it includes soft drinks, chemical water treatment and cooling system, etc. The water is heated to steam in the boiler, heated by the heater and turned into superheated steam, and then through the main steam pipe into the turbine. As the steam continues to expand, the high-speed steam pushes the turbine blades to turn and drive the generator. In order to further improve its thermal efficiency, some steam from some intermediate stage of the steam turbine is used to heat the water supply. In the modern large steam turbine unit, this feed water is used to recycle heat.
In addition, in the ultrahigh pressure unit also adopts reheat cycle, where did a Duan Gong high-pressure steam from steam turbine cylinder export will be done work out all of the steam, sent to the reheat steam boiler heating after the introduction of steam turbine in the intermediate pressure cylinder, continue expanding power of the steam pressure cylinder is sent out, and then into the low pressure cylinder to continue to work. In the process of continuous work of steam, the steam pressure and temperature are kept decreasing. Finally, the condenser is discharged into the condenser and cooled by cooling water, and condensed into water. Condensate is concentrated in the lower part of the condenser by the condensate pump until the low pressure heater heating again after deaerator oxygen, feed water pump after preheating deoxidization water sent to the high pressure heater, after heating, the hot water in boiler and heating water and superheated steam in the superheater, sent to the steam turbine to do work. This is a continuous process of doing work. In soda system of steam and condensate, as many dredge pipe and pass many valve equipment, thus inevitably produce the phenomenon such as run, run, drip, leak, these phenomena will be more or less to cause the loss of water, so we must continuously added in to the system through chemical processing of demineralized water, add the make-up water are usually into the deaerator.
Combustion system
The combustion system is composed of coal, grinding coal, fine separation, powder, powder, boiler, dust removal and desulfurization. Is composed of belt conveyor from coal to coal by electromagnet, coal crusher between coal scuttle, repass coal feeder into the flour mill, grinding fine pulverized coal by air preheater hot air, will play to pulverized coal separator thickness, thickness pulverized coal separator will be qualified (not qualified pulverized coal to coal mill), after a row of powder machine powder sent to the warehouse, for pulverized coal powder machine will be into the burner to the boiler combustion. The smoke is sent to the desulphurization device through the dust removal of the dust, and the gas through the slurry is sent to the pipe to be discharged into the sky by the suction fan.
Power generation systems
The power generation system is composed of the auxiliary exciter, the excitation disk, the main exciter (standby exciter), the generator, the transformer, the high voltage circuit breaker, the booster station, the distribution device, etc. Power generation is by vice exciter (permanent magnet machine) issued a high frequency current, the electric currents generated by vice exciter after excitation rectifier, again sent to the main exciter, after sending the electric main exciter through magnetic switch voltage regulator and destroy through a carbon brush to the rotor of the generator. By rotating the stator winding induction generator rotor current, a powerful electric current through the generator outlet points two road, all the way to the auxiliary power transformer, the other is all the way to the SF6 high voltage circuit breaker, by SF6 high voltage circuit breaker to the grid.
