Carbon brushes are devices that transmit energy or signals between the stationary part and the rotating part of a motor or generator or other rotating machine. They are generally made of pure carbon and coagulant. They are generally square in shape and glued to a support. metal support. There is a spring inside that presses it firmly onto the rotating shaft. For example, after oil drilling is completed, if detection needs to be carried out, the instrument must be lowered from the wellbore and the signal is sent from the well. rotating part (swirl of cable wrapped in steel wire) to the ground through carbon brushes Instrumental.
The inside of the brushed motor presses against the surface of the phase collector. When the motor is running, electrical energy is supplied to the coil through the phase collector. Since its main component is carbon, it is called a. Easy-to-use carbon brushto carry. It must be maintained and replaced regularly and carbon deposits must be cleaned.
How much does a large wind turbine cost? Is it 4 million?
For a 1.5 MW wind turbine, the generator spins about 1,800 times per minute and 1,500 times per minute. hour. The wheel rotates approximately 18 times per minute. This is directly related to the unit's ability.
Generally speaking, level 3 winds are valuable. However, from an economic and reasonable point of view, wind speeds above 4 meters per second are suitable for electricity generation.
According to measurements, a 55 kilowatt wind turbine has an output power of 55 kilowatts when the wind speed is 9.5 meters per second; when the wind speed is 8 meters per second, the power is 38 kilowatts; wind speed When the wind speed is 6 meters per second, it is only 16 kilowatts; when the wind speed is 5 meterses per second, it is only 9.5 kilowatts. It can be seen that the stronger the wind force, the greater the economic benefits.
Detailed information
A wind turbine is an electrical device that converts wind energy into mechanical work. Mechanical work causes the rotor to rotate and ultimately produces reciprocating output. current. Wind turbines generally consist of components such as a wind wheel, a generator (including devices), a steering (tail), a tower, a speed-limiting safety mechanism, and an energy storage device.
The operating principle of a wind turbine is relatively simple. The wind wheel rotates under the influence of the wind. It converts the kinetic energy of the wind into the mechanical energy of the wind wheel shaft. driving the wind wheel shaft to produce electricity. Generally speaking, wind energy isalso solar energy, so we can also say that a wind turbine is a thermal energy generator that uses the sun as a heat source and the atmosphere as a working fluid.
For many centuries, wind turbines, like hydraulic machines, have played an important role in the development of productivity as a source of energy to replace human and animal energy. The widespread application of electromechanical power in modern times and the discovery of oil deposits in the Middle East in the 1950s slowed the development of wind turbines.
In the early 1970s, due to the “oil crisis”, energy shortages appeared. People have become aware of the instability and limitations of conventional fossil energy supplies, so the search for clean and renewable energy has become a key issue in the modern economy. world.an important subject. As a renewable and non-polluting natural energy source, wind energy has once again attracted attention.
References:
As of March 2020, current wind power equipment is generally around 900,000 euros/MW, or 7.61 RMB million. 4 million people can buy 0.5 MW wind power equipment. The price of a 300 kW wind turbine is about 3.2 million yuan, and there are currently 0.5-2.0 MW wind power equipment on the market.
It depends on the brand you choose, the power, the type of configuration, etc. Generally speaking, domestic brands such as Yuchai and Weichai are relatively cheaper, while international brands like Cummins have absolutely superior technology and are relatively expensive. The higher the power, the higher the price.The configuration level also directly affects the price.
Detailed information:
The principle of wind energy production is to Use wind power to spin the windmill blades, then increase the rotation speed with the speed boost to encourage the generator to produce electricity. Depending on wind turbine technology, electricity production can begin at a breeze speed (the degree of breeze) of around three meters per second. Wind energy is becoming a craze worldwide because it does not require the use of fuel and does not produce radiation or air pollution.
The devices needed to produce wind energy are called wind turbines. This type of wind turbine can be roughly divided into three parts: the wind wheel (including the tail rudder), the generator, and the tower. (The big onesAeolian guts basically have no tail rudders, and usually only small ones (including domestic types) have tail rudders).
The wind wheel is an important element that converts the kinetic energy of the wind into mechanical energy. It is made up of several blades. When the wind blows toward the blades, an aerodynamic force is generated on the blades to rotate the wind wheel. The blade material requires high strength and light weight and is often made of fiberglass or other composite materials (such as carbon fiber). (There are also vertical wind turbines, S-shaped rotating blades, etc., which have the same function as conventional propeller-type blades).
Baidu Encyclopedia - Wind Power Generation