Turbine guide vanes include fixed guide vanes and movable guide vanes.
The guide vanes are attached to the seat ring to generate velocity circulation for water flowing from the volute. At the same time, the fixed guide vanes support part of the weight of the unit.
The movable guide vane is installed between the lower ring and the upper cover (mixed flow type) to regulate the water flow. Thus adjusting the power of the turbine and maintaining the speed of the unit.
How to make a small high efficiency hydroelectric generator of 1000 W The water height is not very high and the flow rate is very slow.
"Hydraulic generator" The working principle of the rotor coil generates a rotating magnetic field During rotation, the magnetic field lines are cut by the stator coil according to the electromagnetic principle. induction, a voltage will be generatedin the stator coil. Once the stator coil is connected to the load, the stator coil will generate electric current.
The principle of a hydroelectric generator (hydraulic turbine) is that when water flows through the turbine, it converts the energy of the water into mechanical energy. The rotating shaft of the hydraulic turbine drives the generator rotor, which converts. mechanical energy in mechanical energy is produced.
Why do thermal generators lie down, while hydraulic generators stand upright?
It is difficult to make a small homemade hydroelectric generator. Not economical either.
To obtain high efficiency from a small 1000W hydroelectric generator, an impact hydroelectric generator set can be selected.
The impulse hydraulic generator set is also called horizontal hydraulic generator set. Like the electrog groupoblique impact hydraulic generator, it is a hydraulic generator with high water head and low flow. The required water height range is: 7-40. meters. It is suitable for use in high mountain areas. Its working principle is as follows: in the hydraulic turbine, the jet coming out of the nozzle is not in the tangential direction, but in the direction forming a certain angle with the plane of rotation of the It enters the bucket from one side of the slide, then exits through the leaf of the bucket on the other side. The main features of the impact hydroelectric generator set are:
1. Under normal water conditions, water resources can be reasonably used to generate electricity.
2. If there is a rainy and dry period and there is no water, the diesel engine can be used to generate electricity.
For a small hydroelectric generator of around 1 kW,the market price is around 1,000 yuan. It is much cheaper and faster to buy it directly than to make your own.
For small hydroelectric generators of around 1 kW, the most important thing to consider is its operational stability and reliability. It is recommended not to think too much about efficiency. After all, for a unit with a power of 1 kW, the difference between the power of 70% and 60% is 100 W. There is no need to invest more for 100 W.
Since the steam turbine generator set is composed of a steam turbine and a generator coupling, and the steam requires a certain flow length to work in the steam turbine cylinder, the Steam turbine is divided into high pressure cylinders. , medium pressure cylinder and low pressure cylinders work in series, and after adding the generator, the whole machine group is trvery long and cannot be arranged vertically. The horizontally arranged steam turbine has the necessary conditions for high-speed operation, so the generator generally has only one pair of poles, and its rotor continues to rotate at a speed of 3,000 rpm, and the rotor diameter generally does not exceed 0.8-1.0 meters.
Hydraulic turbines are not always arranged vertically. For example, through-type hydraulic turbines, which mainly rely on large water flows to generate electricity, are arranged horizontally. What you are talking about is a hydrogenerator which typically relies on a high water pressure, low flow generator. The hydrodynamic turbine of this hydrogenerator is located at the bottom. If installed vertically, it is easier to design and construct the volute. is vertical The arrangement requires reducing the height of the generator, this is pWhy large hydrogen generators use large diameter multi-pole generators and flat motors to reduce the height of the factory building.