The working principle of thermal power generators is factory energy conversion which uses coal, oil and natural gas as fuel to produce electrical energy.
In the generator, clean air is filtered by the air filter and high pressure atomized diesel is injected from the injector. The two gases are fully mixed in the cylinder and the piston moves. The movement compresses the mixed gas, causing the volume to decrease and the temperature to increase.
Once the temperature reaches a certain temperature, the diesel ignites and the gas mixture burns violently, causing the volume to expand, thus pushing the piston down. The diesel engine uses this principle to operate the generator and convert diesel energy into electrical energy.
Presentation of the thermal power plant:
Thermal power plant A thermal power plant, called a thermal power plant, is a plant that uses combustible materials (such as coal) as fuel to produce electricity. Its basic production process is as follows: When fuel is burned, water is heated to generate steam, which converts the chemical energy of the fuel into thermal energy. The steam pressure causes the steam turbine to rotate and the thermal energy is converted into mechanical energy. Then the steam turbine drives the generator to rotate, converting the mechanical energy into electrical energy.
The main engine is usually a steam engine or gas turbine. In some smaller power plants, an internal combustion engine may also be used. They all produce electricity using the pressure drop in the process of converting steam or gas at high temperatures and highyou pressure via a turbine in low pressure air or condensed water.
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The following is a thermal energy production process (online):
Energy production process
From the point of view of energy production engineering, everything must be economical and efficient. Large capacity power plants, due to their high production values, focus on improving efficiency rather than installation costs. In other words, they focus on using the least amount of fuel necessary to achieve maximum power output. Many auxiliary equipment makes this steam power plant quite complex and huge combination. A steam turbine is used as the prime mover to drive a generator to produce electricity.ity and provide it to the electricity users.
Coal Process: First of all, it starts with the combustion of coal. Once sent from the coal storage yard to the raw coal hopper, the amount of coal entering is crushed into pulverized coal in the pulverizer and then mixed. Some of the hot air is mixed and enters the oven through the burner. The burned flue gases pass through the boiler, economizer, air preheater and other heat exchangers. Heat is transferred to and eventually escapes from the water or air it contains. Larger non-combustible solids fall into the ash pan as ash for disposal, while finer ones fall into the ash pan for disposal.
Air flow and gas: looking at the air, the air pressure is first slightly increased by the forced draft fan, then sent through the preheater of air to receive some heat from the combustion gases. increases the temperature, and part is sent directly through the burner into the furnace through the pipe, while the other part enters the coal pulverizer
and then enters the furnace with the pulverized coal. after combustion, it first passes through the boiler tube and superheater to vaporize and superheat the boiler water, then passes through the economizer to transfer part of the remaining heat to the water before enter the boiler (feed water then before entering). the oven is heated by the air preheater. After such a trip, the pressure is lower than atmospheric pressure due to frictional resistance, so it must be driven by an induced draft fan to suck it in and increase its pressure. can be released into the atmosphere.
Water and steam process: This plant uses the condenser (condensate water) whichis returned to the boiler from the condensate pump for reuse. Only a small amount of restocking is required. to compensate for the leak. Additional water loss. The additional water is softened by several water softeners to prevent scale formation on the inside wall of the boiler. The condensate pump sends the condensate water through three heaters and is accompanied by other water pumps. , from low pressure to medium pressure to high pressure, and its temperature is increased by the economizer, so that the water entering the boiler obtains considerable thermal energy in advance, so when it circulates in the tube of the oven and is heated, heat transfer. The surface area required to achieve the degree of vaporization may be slightly reduced. As for the steam vaporized, so that it enters the superheater pipe, where it can absorb more thermal energy and transforminto superheated steam, which enters the steam turbine to do its work. , then flows into the condenser, and the cycle begins again. However, the cooling water used in the condenser is supplied by other water. The pump takes water from the surface of the river or sea, absorbs the latent heat of vaporization of the steam and condenses. then returns it to the river or sea without direct contact with steam. The three water heaters are each driven from the steam turbine for partial expansion. Steam that has not yet come down to exhaust temperature and pressure uses thermal. the energy it contains to heat the boiler feed water.
In a steam power plant, the form and arrangement of the energy transformation are as follows: < /p>
1. The fuel and air are mixed and sent to the combustion furnace to start the fuel and release the chemical energy containednaked in the fuel.
2. Burn the mixture to generate thermal energy in the oven.
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3. This thermal energy appears at high temperatures in the gas. Some of it is radiated onto the surface of the furnace tube and some of it passes through each heating surface of the boiler due to convection. furnace tube, it is transmitted to the circulation. The boiler water in it heats the water and turns it into steam at high pressure and high temperature
4. through the nozzle and converted into kinetic energy, generating high speed and generating a huge powerful jet of steam.
5.The rapid jet of steam blows on the turbine blades and generates rotational force on the impeller blades, which converts kinetic energy into mechanical energy to rotate the shaft
6. . Therefore, a steam power plant It is a factory that converts chemical energy into thermal energy, thermal energy into mechanical energynique and finally in electrical energy.
If you want to master this knowledge in detail, you can read the relevant books, the basics of electricity generation and the transformation of electrical parts of power plants, as well as books on distribution networks. (Available in Xinhua Bookstore, Hehe)