The principle of a hydroelectric generator (water turbine) is that when water circulates through the turbine, the energy of the water is converted into mechanical energy. The rotating turbine shaft drives the generator rotor, which converts mechanical energy. energy into electrical energy and produces it.
The world's first hydroelectric power station was built in France in 1878. America's first hydroelectric power station was built in Wisconsin, United States, in 1882, using a direct current generator. After 1889, three-phase alternators began to be used. Since then, the capacity of a single machine has increased rapidly. In 1890, it was only 15,000 kW. By 1955, it could produce 105,000 kW generators. Before 1949, the capacity of a single unit of Chinese-made hydraulic generators did not exceed 200 kW. After 1949, the automobile industry developed vigorously. In 1958, she was able to produce asingle 72,500 kW unit. In 1972, a double unit of 300,000 kW. -An internal water cooling water generator has been produced. The world's leading large-capacity hydroelectric generators are the 718,000 kVA stator water-cooled semi-umbrella hydroelectric generator of the Grand Coulee Hydroelectric Power Station, the 737 kVA stator water-cooled semi-umbrella hydroelectric generator 000 kVA Itaipu Hydroelectric Power Station and the 700,000 kVA water stator hydroelectric generator. -Guli Hydropower Station cooled semi-umbrella hydroelectric generator, kVA air-cooled umbrella hydrogenerator and 800,000kW Xiangjiaba hydrogenerator, etc.
Configuration problems with homemade electric motors and hydroelectric generators. Waiting online. Help me. High school student. . .
Simple video and production content of small technology production isthe following:
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1. Model Ship: Use discarded materials such as plastic bottles, cardboard, and glue to create a simple model steamship. First, plastic bottles are used to make the hull, then cardboard to make the paddles and rudders, and finally the steamboat is propelled by heating water to generate steam.
2. Small Generator: Using copper wire, magnets, and magnetic coils, you can make a simple small generator. Copper wire is wound around a magnetic coil and placed over the magnet. When the magnetic coil rotates, an electric current is generated, thereby generating electricity.
3. Solar Panel Model: Using small solar panels and LED lights, you can create a simple model of a solar power generation system. Connect the solar panel to the luLED light and when sunlight hits the solar panel, the LED light will turn on.
4. Paper Airplane Design: Making paper airplanes is a simple and interesting little technology production project. You can use a piece of paper and fold it in a specific way to design different types of paper airplanes. Try different designs and key adjustments to see which design flies further or is more stable.
5. Water Rocket Experiment: Using discarded plastic bottles and compressed air, you can make a simple water rocket. Pour water into the plastic bottle, then quickly turn the bottle upside down and place it on the floor. Use a compressed air pump or tank to inject compressed air into the bottle. When the pressure builds up to a certain level, the water rocket will be ejected at high speed.
Technical skills in matcraft era:
1. Planning and preparation: Before you start directing, make sure you have a clear plan. Be clear about the project you want to complete and make a list of the materials and tools needed. This avoids surprises or interruptions during production.
2. Safety First: Always prioritize safety during any experiment or production process. Make sure you understand the potential hazards of the materials and tools you use and take appropriate protective measures, such as wearing gloves, glasses, etc.
3. Care and Precision: Technology production typically requires precise measuring and assembly. When making cuts, welds or connections, be sure to measure carefully and use the correct tools to ensure accuracy.
4. Testing and adjustment: technological production is a pprocess of constant testing and adjustment. Don't get discouraged if your project doesn't work or doesn't work well. Try different methods and adjust settings to find the best solution.
5. Recording and Reflection: During the production process, remember to record each step and the results of the experiment. This can help you better understand and review your experiences and make improvements to future productions.
Hydraulic power generator
2.2M waterfall, with a maximum water height of 2.2M. Take 2M for calculation, and the flow rate is 1L/S. Gravitational potential energy T=mgh, P=mgh/t=1000*10*2=20000J/s=20000/3.6=5.5KW
The efficiency of the original owner's homemade turbine will not exceed not 50% because that’s too small .
The motor efficiency will not exceed 85%
The power is therefore conservatively estimated at around 2 kW.
Heightr of water is too low, the poster needs an axial flow vane turbine, and he can make one himself. Next, engage the gearbox at high speed. This can achieve higher efficiency.
Since the power is too low, a 3 kW DC motor can be used with a relatively simple structure, and then an inverter can be added.
It would be very difficult for you to make it by hand, but it is truly a unique gift. I can only explain its principle to you now. The principle of a hydroelectric generator is a bit like that of the ancients. water generators. In car, it uses the water flow to impact the wheel and rotate it, causing the rotor connected to the wheel to rotate through the bearing.
Then the electromotive force is generated in the coil of the generator thanks to the principle of electromagnetic induction. I hope this will be useful to you. I'm afraid you'll be dizzybecause of the details, so I won't go into detail. But the most important thing is that. there must be an excitation coil inside the generator. It's very disturbing. It is better to buy a generator, turbine and other things and make them yourself.< /p>