Pelton wheel turbine is suitable for medium and high water head power plants. The key components are Pelton runner, main shaft and Nozzle assembly.
Pelton wheel turbine
|Water Head:||100 ~ 1700m|
|Output:||0.1 ~ 300MW|
|Runner Diameter:||0.5 ~ 3m|
1. Advanced CFD, the FEA technic is utilized in the designing process to ensure a better technical solution.
CFD analysis for the Pelton wheel turbine is performed in order to predict the turbine performance. The head loss in the collecting pipe and injector assembly is calculated based on CFD analysis results.
The relation of needle stroke and flow also can be calculated. CFD analysis can improve injector and nozzle design to reduce head, Los. The flow curve relative to needle stroke can be drawn based on analytical data.
Fig.7 Flow inside the nozzle and before bucketsFig.6 Velocity distribution in collecting pipe and injector assembly
CFD analysis can simulate the whole procedure which flows coming into and outgoing from the bucket. The flow visualization can clearly show whether water flow outgoing from the bucket pressure side hit the backside of the bucket. Such a flow situation will cause more hydraulic loss and should be avoided during the runner bucket's optimum design process. The torque generated by runner and pressure distribution in the bucket can be calculated based on CFD analysis results. Pelton wheel turbine output and efficiency are finally predicted for various operating points.
Fig.8 Flow inside the bucket
The possible location of cavitation can be predicted based on the pressure distribution in the bucket. The phenomena of cavitation should be avoided in the back tip of splitter by optimum design for the back shape of the splitter.
Fig.9 Prediction for cavitation location
The pressure distribution in the bucket will be used for the fatigue analysis of the Pelton wheel turbine. The stress level for the bucket is calculated by using FEA analysis for various loads.
Fig.10 Runner FEA analysis
2. CAE casting simulation is adopted for the production of casting parts, this advanced and reliable process plan could help effectively improve product quality.
3. All raw material strictly conform to international standard, key components such as runners, guide vane is Forged and entire CNC machined.
Chemical Composition for ASTM A473 S41500 and ASTM A743 CA6NM（%）
|ASTM A473 S41500||≤0.05||≤0.60||0.5-1.0||≤0.030||≤0.030||11.5-14.0||3.5-5.5||0.40-0.80|
|ASTM A743 CA6NM||≤0.06||Max1.0||Max1.0||≤0.040||≤0.030||11.5-14.0||3.5-4.5||0.40-1.0|
Mechanical Property for ASTM A473 S41500 and ASTM A743 CA6NM
|Material No.||σ0.2(Mpa)||σb(Mpa)||δ5(%)||ψ(%)||Akv (J/cm2)||HB|
|ASTM A473 S41500||≥620||≥795||≥15||≥45||≥50||≤295|
|ASTM A743 CA6NM||≥550||≥755||≥15||≥35||≥50||≤285|
4. State of the art machining and testing equipment, as well as licensed professional engineers all combined to help guarantee better product precision.
5. All product is subject to strict inspection according to international standards and client special requirements
6. With the help of 3D Assembling, through motion simulation, the entire organization interaction can be seen at a glance. This helped a great deal for parts processing and pre-installation.
Where can the Pelton wheel turbine be applied?7. Each project will strictly follow manufacturing plan to ensure the delivery date.
Pelton Runner for Heibuchuan Power Station in Japan
Our company signed a contract with a Japanese company in April 2019 to manufacture one set of Pelton Runner for Heibuchuan 4# Power Station in Japan. The runner in this contract is the largest forged Pelton runner we have ever manufactured for Japanese projects. The runner diameter D1 = 2520mm; weight: 10400kg; rated output: 95MW; rated water head: 545.5m. According to the requirements of our Japanese client, the runner shall be forged by stainless steel as a whole, and completely CNC machined to form the finished product. The Japanese client made very strict requirements for the machining technique and forging quality, but due to our rich experience in runner manufacturing and outstanding machining techniques, we perfectly solved the technical and manufacturing difficulties and prepared a complete set of plans to ensure the successful progress of this project as scheduled.
We are a supplier of high-quality Pelton wheel turbines, providing strong hydro energy support to our customers. Our products are widely used and efficient. If you have any questions, please contact us in time.