Pelton wheel turbine
About GETAI Pelton wheel turbine
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.
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Fig.6 Velocity distribution in collecting pipe and injector assembly
Fig.7 Flow inside the nozzle and before buckets
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（%）
| Material No. | C | Si | Mn | P | S | Cr | Ni | Mo |
| 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.
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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.
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7. Each project will strictly follow manufacturing plan to ensure the delivery date.
Where can the Pelton wheel turbine be applied?
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.
Forging Disc
CNC Machining of Buckets
We could produce product according to inerntational standard and special client requirements. The standard we use include but not limited to the following:
IEC Standard fro equipment and testing
ASTM Standards
CCH70-3 Specification for inspection of steel castings fro hydraulic machines
EN (UNI-DIN) Standards
JIS Standards
ISO 1940-1-2003 Mechanical vibration-Balance quality requirements for rotors in a constant (rigid) state
ASME-Bioler and Pressure Vessel Code
- Section II - Material Specifications Part A-Ferrous
- Section VIII - Pressure Vessels-Division 1
- Section IX - Welding and Brazing Qualifications
We dedicated to develop the best products and solutions for you in our role as specialists, to help unleashinging your potential and generate more power with our customized solutions!
Hydro Power Plant assessment
Inspections and offer customized solution
Plant Maintenance
Offer Spare parts
Troubleshooting
Consulting, installation guidance, site testing ect. field services
Training
More than 20 years of successful hydro turbines design,production and exporting experience, Long time certified suppliers for world renowned companies such as: MITSUBISHIHITACHI POWER SYSTEMS, LTD.(MHPS), Toshiba, GE, BHEL, ALSTOM, DEC,HEC, CHD ect.
Continuous investment in both state-of-the-art facilities and R&D support us to be strong and powerful in the market, high performance versus price ratio product , we could help achieving your goals within budget and time frame.No cheating, No excuse, No purposed delay is what we always try to guarantee our partners!
We got many national patents for our products, and all products conform to EU, ASTM, ISO, IEC, JIS etc. international standards.
Quick and professional response to your request for drawings, quotations, and answers about any technical problems. We do our best to realize our commitment to you that: what you see and hear is what you will get, whatever customer you are, big or small. In the mean time, we implement a quality information rapid feedback system and a standard parts management system.
Provide complete support at every step of your project, You will rely on a solid experienced partner that will be able to adapt to every situation and to help you take on all challenges that are part of any hydroelectric project. We dedicated to help unleashing your potential and generate more power with our customized solutions!
Reliable, Easy to work with, Knowledgeable and we add value, though we are not perfect, but we are learning and improving, we love what we do, we appreciate all the valuable customer to give us a chance to know and see if we are the Mr. RIGHT for each other. Right here waiting for YOU to start a rewarding journey together!
Are you trading company or manufacturer ? Is OEM service available?
A: We are a factory with more than 20 years of successful hydro turbine manufacturing experience, OEM service is available.
How long is your delivery time?
A: Generally it is 120-270 working days upon contract signing and receipt of prepayment.
What parameters are needed for the turbine generator quotation?
A: Normally we need rated water head, rated flow, rated installed capacity,voltage, frequency and rotation speed. The more information the better.
Do you offer water turbine installation service?
A: Yes. Installation service is available upon request.
What kinds of test and inspection is carried out to ensure product quality?
A: Mechanical property, chemical composition, hardness, surface roughness, Dimension check, profile check, NDT Testing ( UT/MT/RT/PT), balancing, pressure test ect, is strictly carried out according to relevant international standards.
What is the standard packing and transportation means?
Product will be packed in solid and safe sea-worthy cases, the properly packaged and marked product could be delivered to any port or site as specified in the Contract by ship, plane or truck.
What is the standard payment terms ?
Usually we accept T/T and L/C.
What kinds of guarantee provided?
Product warranty for 12 months after commissioning on site or 18 month after delivery whichever come first; We offer lifelong follow-up services for our products, and we will response to client requirements within 24 working hours.
If there is any other questions, please email me (oversea@gthec.cn) or chat with me on Whatsapp/Wechat /Mobilephone: +86 135 5586 1247
