Supercharged turbo expander

Abstract

The invention provides a gas bearing supercharged turbo expander, including an intermediate shell body with a turbo volute being arranged on the left end of the intermediate shell body, a supercharger volute being arranged on the right end of the intermediate shell body, and a rotor being rotatably arranged inside the intermediate shell body, wherein an expansion wheel and a supercharging wheel are respectively arranged on both ends of the rotor, and two gas bearings sleeve on the rotor for supporting the expansion wheel and the supercharging wheel. The supercharged turbo expander provided in the invention has the advantages of simple structure, low shaft loss, low cost, high safety performance, reduced oil steam discharge in an oil bearing expander, and decreased environmental pollution, thereby establishing a milepost-type foundation for the development of the supercharged turbo expander.

Description

Technical field [0001] The invention relates to a supercharged turboexpander, in particular to a supercharged turboexpander using a gas bearing. Background technique [0002] The turbo-expander is a key unit necessary to obtain cold energy for air separation equipment, natural gas petroleum gas liquefaction separation equipment and cryogenic crushing equipment, and is the heart of ensuring the stable operation of the entire equipment. The main principle is to use a certain pressure of gas to perform adiabatic expansion in the turbo expander to do external work and consume the internal energy of the gas itself, so that the gas itself is strongly cooled to achieve the purpose of refrigeration. The energy output by the turbo expander is consumed by the coaxial compressor recovery or braking fan. [0003] The supercharged turboexpander includes a middle casing. The left end of the middle casing is equipped with a turbine volute, and the right end is installed with a supercharger volut...

AI Technical Summary

Problems solved by technology

[0004] At present, the expansion wheel and the supercharging wheel used in the supercharged turbo expander are generally made of aluminum casting, and the expansion wheel and the supercharging wheel obtained in this way are relatively rough, which affects the performance of the entire expander

In addition, due to the shape of the blades of the current expansion wheel and supercharging wheel, the work efficiency is not very high.

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