What are the applications of hydro turbines? What are the types of hydro turbines?

Hello, there are many application fields for hydro turbines; Hydro turbines are mainly used in pumped storage power stations. When the load of the power system is lower than the base load, it can be used as a water pump to use the excess power generation capacity to pump water from the downstream reservoir to the upstream reservoir to store energy in the form of potential energy; When the system load is higher than the base load, it can be used as a water turbine to generate electricity to regulate the peak load. Therefore, a pure pumped storage power station cannot increase the power of the power system, but it can improve the operating economy of the thermal power generation unit and increase the overall efficiency of the power system!

The above answers are provided by Suzhou Liaochen Environmental Protection Equipment.

As far as hydroelectric generating units are concerned, although the capacity of a single unit is not low, it is not as good as the capacity of a single unit of thermal power.

The reason is mainly the mechanical structure. The speed of the hydro turbine is lower because the medium is water with a large specific gravity, while the speed of the steam turbine of thermal power is much higher than that of the hydro turbine. With the same output power, the torque distance is smaller when the speed is higher, and the spindle of the equipment can be thinner.

Now that the shaft diameter of large turbines is more than 2 meters, it is unrealistic to be thicker. Therefore, the output power of a single turbine of a hydraulic turbine is not comparable to that of a steam turbine.

There are many applications for hydro turbines, ranging from 1D to 2D to 3D.

According to the working principle, hydraulic turbines can be divided into two categories: impact turbines and impact turbines. The runner of the impact turbine is rotated by the impact of the water flow, and the pressure of the water flow remains unchanged during the working process, which is mainly the conversion of kinetic energy; The runner of the impact turbine rotates in the water by the reaction force of the water flow, and the pressure energy and kinetic energy of the water flow are changed during the working process, but the main thing is the conversion of pressure energy.

According to the flow direction of the water flow, the impact turbine can be divided into two types: cutting type (also known as bucket type) and oblique type. The structure of the oblique turbine is basically the same as that of the bucket turbine, except that there is an inclination angle in the direction of the jet and is only used for small units.

Impact turbines can be divided into francis, axial, oblique and throughflow. In a Francis turbine, the water flow enters the water guide mechanism radially and flows out of the runner axially; In axial turbines, water flows radially into the guide vanes, and axially into and out of the runners; In an oblique flow turbine, the water flow enters the guide vane radially and flows into the runner in a direction inclined to a certain angle of the main shaft, or flows into the guide vane and runner in the direction inclined to the main shaft; In a through-flow turbine, water flows axially into the guide vanes and runners. Axial flow, through-flow and oblique flow turbines can also be divided into fixed propeller type and rotary paddle type according to their structure.

The rotor blades of the fixed paddle type are fixed; The rotor blades can be rotated around the blade shaft during operation to accommodate changes in head and load.

Hydraulic turbine is a power machine that converts the energy of water flow into rotating mechanical energy, and it belongs to turbomachinery in fluid machinery. As early as around 100 B.C., the prototype of the water turbine appeared in China, the water wheel, which was used to lift irrigation and drive grain processing equipment. Most modern turbines are installed in hydropower plants to drive generators to generate electricity.

In a hydropower station, the water in the upstream reservoir is directed to the turbine through the diversion pipe, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has been done is discharged downstream through the tailpipe pipe. The higher the head and the higher the flow rate, the greater the output power of the turbine.

Hydraulic turbines can be divided into two categories: impact type and impact type.

Counterattack water wheel DAO

The machine includes mixed flow.

There are two main types of hydraulic turbines, impact type and impact type. The impact type can be divided into: mixed-flow type, oblique flow type, axial flow type (axial flow type can also be subdivided into:

axial flow paddle type and axial flow fixed paddle type) and through-flow type (through-flow can also be subdivided into: full through-flow, bulb through-flow and axial extension through-flow), etc., impact type can also be divided into: bucket type, oblique type and double-click type.

At present, the more commonly used types of medium and large turbines are: Francis type, axial flow type, through-flow type and bucket type.

Pump turbines are of the impact type.

Francis, through-flow, bulb, pump turbine, axial flow.

Axial flow, mixed-flow, oblique strike, percussion, through-flow, these are more conventional, and there is a double-click type.

The potential energy (impact turbine) and kinetic energy (impact turbine) of the water flow are converted into mechanical energy through the runner.

Bucket turbine, what is the principle, do you understand?

A hydraulic turbine is a mechanical rotating device that uses the flow of water level drops! As early as thousands of years ago, the ancients invented the water mill, water mill, and water wheel are the principles of water turbines! Modern large-scale hydropower stations are used hydro-generator sets!

Bucket turbine, what is the principle, do you understand?

The working principle of a water turbine is simple. It's like the windmills we used to play with as kids. Because water (liquid) and gas are collectively referred to as fluids.

Actually, they work very simply. It's just that at the other end of the turbine, there is an excitation device, which is a generator. This allows for the generation of electricity (and of course wires, transformers, speed controllers, etc.).