The hydroelectric generator is divided into two parts, the turbine and the generator.
Hydraulic turbine: It is composed of valves, volutes, water guide vanes, channels, suction tubes and other components.
Generator: It is composed of main shaft, bearings, stator, rotor and other components.
Water flows through the valve, volute, water guide vane, channel and suction tube, causing the rotation of the channel. The runner drives the generator rotor to rotate in the stator through the main shaft and bearings, transforming the rotor into a rotating magnetic field. The stator coil moves to cut the magnetic lines of force, thereby generating an induced electric potential, generating current to generate electricity. , and convert the potential energy of water into electrical energy.
What is the basic principle of a hydrogenerator?
1. Remove the inner cover, handrails, brackets, etc. of the hydraulic wheel.
2. Remove the water seal device from the water guide bearing (1# machine is seal, 2# machine is rubber flat seal).
3. Remove the external pipe of the water tank, remove the water tank fixing bolts, lift the water tank, and use a hoist to take it out of the water truck room after decomposition.
4. Push the shaft to the water guide and measure the clearance of the water guide tile as a reference for maintenance and adjustment of the water guide bearing. 5. Loosen the anti-weight bolts of the water guide slab, use the jack to lift the water guide slab, then use a hoist to lift the water guide slab and lift it halfway out from the water truck room. Pay attention to marking the orientation of the water guide tiles.
Basic principle: In a hydraulic turbine, water flows radially through the water guiding mechanism through the guiding effect of the volute, converting energy kinetics of the liquid into static pressure energy, then converts the static pressure energy into the kinetic energy of the rotor.
The runner is coupled to the generator rotor via the main shaft, driving the rotor to rotate and cutting off the generator stator magnetic coil. It uses the principle of electromagnetic induction to generate high voltage electricity in the generator coil. , then increases the voltage across the transformer for transmission. The cabling exports energy to the network and water flows axially out of the channel.
Large and medium-sized hydraulic turbines generally use metal volutes, the main function of which is to guide the flow of fluid and convert the kinetic energy of the liquidide in static pressure energy. The tilt angle of the movable guide vanes in the water guiding mechanism is adjustable, and its main function is to adjust the flow rate.
Hydraulic generator refers to a generator that uses a hydraulic turbine as the prime mover to convert water energy into electrical energy. As water flows through the turbine, the energy of the water is converted into mechanical energy. The rotating shaft of the turbine drives the generator rotor, which converts mechanical energy into electrical energy and produces it. It is the main electrical equipment for producing electrical energy in hydroelectric power stations.