What is the principle of thermal power plants, what is the principle of power generation in thermal

The thermal power plant is a thermal power plant, using coal as a primary energy source, using belt conveyor technology, to the boiler to deliver the treated pulverized coal, pulverized coal combustion heating boiler to make the boiler water into steam, after a heating, the water vapor into the high-pressure cylinder. In order to improve thermal efficiency, the water vapor should be heated a second time, and the water vapor should enter the medium pressure cylinder. The steam from the medium-pressure cylinder is used to drive the turbine generator to generate electricity.

The middle pressure cylinder is drawn into the symmetrical low-pressure cylinder. Part of the steam that has been worked is pumped out from the middle section to supply oil refining, fertilizer and other brother enterprises, and the rest flows through the condenser water cooling to become saturated water at about 40 degrees Celsius as reuse water. The saturated water of about 40 degrees passes through the condensate pump, passes through the low-pressure heater to the deaerator, and the saturated water of about 160 degrees at this time is deoxygenated by the deaerator and sent into the high-pressure heater by the feed water pump, in which the high-pressure heater uses reheating steam as heating fuel, and finally flows into the boiler for reuse.

The above is a production process.

The fuel (coal) is used to heat the water, form high-temperature and high-pressure superheated steam, drive the gas turbine to rotate, drive the generator rotor (electromagnetic field) to rotate, the stator coil cuts the magnetic field line, emits electric energy, and then uses the step-up transformer to rise to the system voltage, connect to the grid with the system, and transmit electric energy to the outside. Very simple. That's it.

I work at the power plant.

In a boiler, coal combustion turns water into superheated steam; The superheated steam enters the steam turbine to push the steam turbine to do work, and then turns into water back to the boiler after the work is done. The generator and steam turbine are coaxial, and the steam turbine drives the generator to generate electricity. From the point of view of energy conversion, i.e., the chemical energy of the fuel, the thermal potential energy of the steam, the mechanical energy, and the electrical energy.

First, steam is produced by the boiler, and then sent to a steam turbine, which rotates to drive the generator to generate electricity. The exhaust from the steam turbine enters a cold end equipment called a condenser, where it condenses into water, which is sent by the condensate pump to the feed water pump and then into the boiler. This is a cycle.

This is how power plants generate electricity in a continuous cycle.

Thermal Power Plant Introduction:Due to objective facts, it is impossible for thermal power plants to "bid for the grid" on the same starting line as large power plants. The installed capacity of thermal power plants is restricted by the size and nature of heat loads, and the scale of units is much smaller than that of the main units of thermal power plants.

Thermal power plants have a larger boiler capacity than thermal power plants of the same scale because they generate both electricity and heat.

Thermal power plants must have more boiler capacity than ordinary thermal power plants for backup, and the water treatment capacity is also larger. Thermal power plants must be close to the heat load center, often the center of the town in a densely populated area, and their water use, land acquisition, demolition, and environmental protection requirements are much higher than those of thermal power plants of the same capacity, and a thermal pipe network is also built.

Thermal power generation: Simply put, it uses coal to boil water and uses water vapor to drive steam turbines to generate electricity, and the energy utilization rate is extremely low. Hydroelectric power generation is the use of the mechanical energy of the flowing water to generate electricity, the flowing water pushes the turbine, so that the magnet windings of the generator rotate, produce a changing magnetic field, and the changing magnetic field then induces a current in the surrounding coil windings, so that the generator will send electricity.

In order to obtain a flow of water with greater energy to propel the turbine, the flow of water acting on the turbine must have a large potential energy. The faster the velocity and the greater the drop, the greater the potential energy of the flow, and the greater the kinetic energy obtained by the potential energy conversion at the downstream turbine. One can take advantage of the drop of a river or the drop of a natural waterfall to generate electricity.

IntroductionHydroelectric power system uses rivers, lakes and other rivers and lakes with potential energy to flow to low places, converts the potential energy contained in them into the kinetic energy of the hydro turbine, and then uses the hydro turbine as the driving force to drive the generator to generate electrical energy. Use water power (with a water head) to drive the hydraulic machinery (water turbine) to rotate, the water energy is converted into mechanical energy, if another machine (generator) is connected to the water turbine to rotate with the water turbine can send out electricity, then the mechanical energy is converted into electrical energy.

Hydroelectric power generation is generated by the flow of water at a high level through a water turbine to drive a generator.

Thermal power generation is the evaporation of water through fuel, and the water vapor produced drives a steam turbine to drive the generator to generate electricity.

Clause.

1. Coal-fired power plants use coal as fuel, and coal is burned in the boiler to heat the water in the boiler to produce steam, and then steam enters the steam turbine from the main steam valve and regulating valve of the boiler with a certain temperature and pressure.

Clause. Second, in turn, the power is expanded through a series of ring-shaped nozzle mounting grids and dynamic cascades, and the thermal energy is converted into mechanical energy that drives the rotor of the steam turbine to rotate, and the generator is driven to generate electricity through coupling.

Clause. 3. After the steam turbine exhaust steam of the steam turbine expands, the steam condenser condenses into water, and then goes to the heater, and heats to steam through the water to the boiler, so that the cycle.

Clause. Fourth, that is, the thermal energy of the steam is first converted into kinetic energy in the nozzle grid, and then the kinetic energy is converted into mechanical energy in the moving blade grid.

Clause. 5. The rotor of the turbine rotor motor rotates, and the generator excitation system provides the rotor DC current as the magnetic field, and the generator stator magnetically induces the rotation of the wire cutting rotor to transmit the power to the system. The working principle is the process of energy conversion, i.e., thermal energy-kinetic energy-mechanical energy-electrical energy. Finally the electricity was sent.

Thermal power plants are called "power plants, coal-fired power plants are the use of coal, oil, natural gas as fuel to produce electricity, its basic process is: fuel combustion boiler water heating into steam, the chemical energy of the fuel into thermal energy, steam pressure to drive the steam turbine rotation, thermal energy into mechanical energy, and then steam turbine generator, mechanical energy into electrical energy.

There are three major equipment in thermal power plants: boilers, steam turbines, and generators.

Boiler: Heat is generated by burning coal to heat water into high temperature and high pressure water vapor, and the water vapor is sent to the steam turbine Steam turbine: the water vapor produced by the boiler drives the steam turbine, so that the steam turbine rotates at high speed and drives the generator to do work The generator: the generator passes the rotary electricity (electromagnetic induction).

The centralized control room is a place for the operation personnel of the power plant to work and rest, and the centralized control room is equipped with computers and monitoring systems for the operation of the operators from afar.

The basic principles of thermal power plants are:

The fuel is burned in a boiler to heat water to make it steam (converts the chemical energy of the fuel into heat), the steam pressure pushes the steam turbine to rotate (heat energy into mechanical energy), and finally the steam turbine drives the power generator wood to rotate (mechanical energy into electrical energy).

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Problem description: How to save the most raw materials.

Analysis: Thermal power plant is a factory that uses coal, oil and natural gas as fuel to produce electric energy, and its basic production process is: the fuel is burned in the boiler to heat water to make steam, the chemical energy of the fuel is converted into thermal energy, the steam pressure drives the steam turbine to rotate, and the heat energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate and converts the mechanical energy into electrical energy; Its classifications are:

By fuel, coal-fired power plants, Kai lead oil-fired power plants, gas-fired power plants, waste heat power plants, power plants fueled by garbage and industrial waste; According to steam pressure and temperature, medium and low pressure power plants (450 degrees), high pressure power plants (540 degrees), ultra-high pressure power plants (540 degrees), subcritical pressure power plants (540 degrees), supercritical pressure power plants (550 degrees); According to the prime mover, condensing steam turbine power plant, gas turbine power plant, internal combustion engine power plant, steam-gas turbine power plant, etc.; According to the output energy, the steam power plant (only power generation), thermal power plant (power generation and heat supply); According to the installed capacity of power plants, small capacity power plants (below 100MW), medium capacity power plants (100-250MW), large and medium capacity power plants (250-1000MW), and large-capacity power plants (more than 1000MW); At present, China's largest thermal power plant: Zhejiang Beilun Port Power Plant, with an installed capacity of 3 million kW (i.e. 3,000MW) and five units of 600,000 kW (600MW).

1. Thermal power plants, referred to as thermal power plants, are factories that use combustibles (such as coal) as fuel to produce electricity. Its basic production process is: the fuel is heated with pure water to generate steam when burning, the chemical energy of the fuel is converted into thermal energy, the steam pressure drives the steam turbine to rotate, and the thermal energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate and converts the mechanical energy into electrical energy.

2. The prime mover is usually a steam engine or a gas turbine, and in some smaller power stations, it is also known that internal combustion engines may be used. They generate electricity by using the pressure drop in the process of converting high-temperature, high-pressure steam or gas through a turbine to low-pressure air or condensate.

Principle of thermal power generation

Thermal power generation is generally a general term for the way in which the heat energy generated by the combustion of combustibles is used to heat water, so that the water becomes high-temperature and high-pressure water vapor, and then the water vapor pushes the generator to generate electricity.

Most thermal power plants use coal as a primary energy source, using belt conveyor technology to deliver treated pulverized coal to the boiler, and the pulverized coal burns and heats the boiler to turn the water in the boiler into steam, and after the heating of the side, the water vapor enters the high-pressure cylinder. In order to improve the thermal efficiency, the water transport steam should be heated twice, and the water vapor should enter the medium pressure cylinder. The steam from the medium-pressure cylinder is used to drive the turbine generator to generate electricity.