Kaplan & Tubular Turbine
The Kaplan Turbine is suitable for medium and low water head and large flow power plants. At the same water head, the Kaplan runner speed is higher than the one of the Francis. The Kaplan runner blade can be fixed and rotatory. The key components include, among other: Kaplan runner, Distributor, Main shaft, Main shaft seal, Turbine guide bearing, Governor, Draft tube, Spiral case. Tubular Turbines are suitable to lower water head, is a kind of horizontal turbine with straight flow channel. There is no spiral case in Tubular turbine, and its blades can be fixed or rotatory. The key components include: Tubular runner, Distributor, Turbine guide bearing, Governor among other.
Application Scope
Kaplan turbine | Tubular Turbine | |
Water Head: | 3 ~ 80m | 2 ~ 25m |
Output: | 0.1 ~ 200MW | 0.05 ~ 57MW |
Frequency: | 50/60HZ | 50/60HZ |
Runner diameter: | 1 ~ 11m | 1 ~ 7m |
Equipped with advanced computer CAD workstation hardware system and software system, three-dimensional drawing software, such as ANSYS analysis software and UG and Solid Works, which could be used to analyze the strength and stiffness of the whole unit, simulate the assembly, motion, all these measures helps ensure the design quality.
Product Design
Design Capability Brief Introduction
Getai technician team is consisted of professional engineers with lot of real field experiences and senior consultants. The company had accumulated a wealth of experience in hydropower equipment development, production, installation and commissioning. GETAI had got 15 utility model patents.
Our company set up GESE Hydro Upgrades Inc. in Canada in 2015,The mission of our new company is to supply custom-designed and optimized turbine parts with highest efficiency, stability and cavitation safety, while fitting existing stationary components and operating within the desired range and under conditions imposed by the intake, distributor and draft tube through application of a Multi-Objective Design Optimisation Algorithm (M-ODOA).
The M-ODOA methodology, which includes Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) modules, has been effectively applied in lot of power plants. Our turbines’ performance has been repeatedly verified by full efficiency tests (IEC code), and annual inspections have confirmed their conformance to the appropriate safety margins for cavitation and structural integrity.
Computer Simulation Technology CFD Analysis
CFD, or computer fluid mechanics, uses numerical analysis and data structures to solve and analyze problems that involve fluid flows. Computers are used to perform the calculations required to simulate the interaction of liquids with surfaces defined by boundary conditions.
Finite element analysis (FEA) method simulate the real physical system (geometry and load conditions) by means of mathematical approximation.
To solve problem, it subdivides a large problem into smaller, simpler parts that are called finite elements. The simple equations that model these finite elements are then assembled into a larger system of equations that models the entire problem.
FEA could help increase accuracy, enhance design and better insight into critical design parameters, virtual prototyping. FEA method is applied for the runner design of some special power stations, especially the high head Pelton power station, according to the simulation analysis of force and displacement of the runner under various working conditions, we find the weak links and strenghten it accordingly, so runner’s strength ect overall performance could be better guaranteed, service life extended. Through the finite element analysis, bucket broken and crack phenomenon which caused by strength problems could be effectively prevented, thus ensure the unit safety.
