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As for several types of hydraulic turbines, please understand the series of axial flow （kaplan) turbine generators.
Author: source: date: 2018-11-27 13:47:50
The axial flow turbine runner is composed of a runner body, a blade and a water discharge cone. The number of blades is less than that of the mixed flow type, and the blade axis is perpendicular to the axis of the turbine. It is suitable for hydropower stations with medium and low heads and large flow. Under the same head, the specific speed is higher than that of the Francis turbine. The application head is approximately 3 to 80 m. The flow of water changes from radial flow to axial flow between the vanes and the runner, while in the runner region, the flow of water remains axial.
1. Suitable for the development of low water head (2-30m) larger flow of water resources;
2. Appliceable to large and small head change load changes of power plant;
3. For the low head,head and power changed greatly power station,can stably under various working conditions;
4. This machine is a vertical shaft device,has the advantages of simple structure,convenient repair,equipment,low price,easy to realize the direct drive etc.
Under the same head, its overcurrent capacity is larger than that of the mixed flow, and the cavitation performance is worse than that of the mixed flow. According to whether the rotor blades can rotate during operation, they can be divided into two types: axial flow propeller type and axial flow fixed type propeller type.
The blades of the axial-flow fixed-blade turbine are fixed on the rotor body. The blade placement angle cannot be changed during operation, and the efficiency curve is steep. It is suitable for power plants with small load changes or adjustable number of units to adapt to load changes. Advantages: simple structure and low cost. Disadvantages: Efficiency degrades sharply when deviating from design conditions. According to its characteristics, it is generally used in hydropower stations with small output, low head and small head change.
The axial-flow paddle turbine was invented by Austrian engineer Kaplan in 1920 and is also known as the Kaplan turbine. The runner blades are generally operated by a hydraulic relay mounted in the rotor body, and can be rotated according to the head and load changes to maintain the optimal fit between the movable vane corners and the vane corners, thereby improving the average efficiency. The maximum efficiency of the turbine has exceeded 94%. However, such a turbine needs a mechanism for operating the blades to rotate, so that the structure is complicated and the cost is high, and it is generally used for large and medium-sized hydropower stations with large variations in head and output.
The axial flow turbine runner mainly comprises three parts: a runner vane, a runner hub and a drain cone.
Q1, Which turbine should I choose?
Please tell me the water head, flow rate, frequency, Total power you need
, voltage, on grid or off grid operation, we will propose a solution.
Q2, Can your factory provide all the equipment for hydropower generation?
Yes, we can provide you with turbines, hydro-generators, pressure regulators, turbine wheels, control panels, transformers, monitoring systems and more.
Q3, Can you do EPC for a hydroelectric power plant?
Yes, we can provide TURN-KEY and EPC services including measurement, design, manufacturing, construction, manufacturing, commissioning, inspection, maintenance runner replacement and refurbishment/upgrade/improvement/repair/refurbishment of turbines/generators including bearings, seals For parts and key parts, we will send technicians and workers to install equipment.
Q4,Is your company a trading company or a manufacturer?
We are a manufacturer of hydro turbine generators and started to promote the international market in 2013. Our factory is located in Sichuan, where China's water conservancy and hydropower is most developed. Welcome to visit our factory in China.
Q5, What is an acceptable MOQ?
For this product, our acceptable MOQ is 1 set.
Q6,How long is the delivery time?
Delivery times range from 15 days to 6 months depending on the model you are purchasing.