A Hybrid Microlayer Turbine Combining Impulse Action and Boundary Layer Effect

Abstract

The invention discloses a mixed micro-layer turbine combining impulse action and boundary layer effect, which belongs to the scope of parts of thermal power generation equipment. It mainly includes the device stator shell and rotor. The stator shell is divided into three parts: regular hexagonal front and rear end covers and the main body. The original cavity is bored in the middle respectively, and the hexagons are respectively fixed with bolts. Vent holes are evenly opened around the center of the rear end cover. The turbine shaft is mounted on the casing by bearing interference fit. The turbine shaft is provided with shaft shoulders and keyways in turn, and the turbine disks are arranged parallel on the turbine shaft through keys and spacers. The rotor disk group and the turbine shaft have a clearance fit, and the ends are locked with round nuts. The end of the turbine shaft adopts a non-connecting magnetic coupling, and the circumference of the magnetic coupling is evenly arranged with circular magnets in the form of staggered magnetic poles. When the shaft rotates, the magnetic coupling can be used to drive the motor to rotate to generate electricity. The invention has simple structure, low manufacturing cost and easy miniaturization. It can be applied to low-grade thermal energy such as solar energy, geothermal energy and factory waste heat.

Description

technical field [0001] The invention belongs to the mechanical device range of thermal power generation equipment, in particular to a mixed micro-layer turbine combining impulse action and boundary layer effect. Background technique [0002] Energy saving and emission reduction is a hot spot in the world today. Different from traditional thermal power generation, many low-grade thermal energies such as solar energy, geothermal energy, factory exhaust gas, thermal power plant exhaust gas, and biomass have begun to attract people's attention. If these low-grade thermal energy can be better used to generate electricity, it can alleviate the pressure on some traditional energy sources. [0003] To convert low-grade heat energy into electric energy, generally use low-grade heat energy as the heat source, heat the fluid working medium to generate steam, and drive the impeller to rotate mechanically, thereby driving the generator to generate electricity. At present, the tradition...

AI Technical Summary

Problems solved by technology

Bladed turbines based on this principle are usually more suitable for high-parameter thermal power generation. However, due to the low temperature of the heat source, the parameters of the working medium steam generated by the above-mentioned low-grade heat energy are relatively low, which makes traditional bladed turbine blades Complex design, high cost and low efficiency

Moreover, some low-grade heat energy, such as factory exhaust gas, waste flue gas and biomass, etc., because the incoming flow contains solid and liquid particles, the traditional bladed turbine blades are vulnerable to cavitation corrosion and solid particle wear, so they cannot be used Gas-liquid two-phase flow such as high-viscosity fluid, low-temperature water vapor, and solid-liquid two-phase flow such as flue gas and coal slurry limit the scope of its working medium

At the same time, as the size of the bladed turbine decreases, the specific surface area increases greatly, the friction loss between the fluid and the blade surface increases, and the turbine efficiency decreases, making it difficult to miniaturize the bladed turbine

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