A self-exciting back-rotating jet supercharger

Abstract

The invention discloses a self-excitation back rotating type jetting supercharger and belongs to the field of fluid jetting supercharging. The jetting supercharger comprises an inner rectifying assembly and a zooming work cavity. According to the core, a self-excitation back rotating flow rotor at the front end of a supercharger mixing chamber is used for inducing the three-dimensional momentum gradient, a mixed boundary layer is thickened, one-way momentum exchange is changed into multi-dimensional momentum exchange, the fluid mixing efficiency is improved, and a back rectifying supporting ring is matched for recycling tangential energy. Multiple sets of supercharging jetting devices are adopted and are connected in parallel for set design, and a system adjusting function is strengthened. According to the supercharger, disturbance of the self-excitation rotor is utilized, the mixed boundary layer is thickened, and the length of a mixed section can be effectively reduced; the open area of drive nozzles is adjustable, and operation elasticity of the device can be effectively strengthened due to the fact that the multiple sets of nozzles are used simultaneously. The whole device is simple in structure, convenient to maintain and capable of being widely suitable for single-phase or multi-phase fluid supercharging.

Description

technical field [0001] The invention relates to a self-excited back-rotating jet supercharger, which belongs to the technical field of fluid jet supercharging. Background technique [0002] The ejector uses the jet action of the high-pressure fluid to pump the low-pressure fluid for mass transfer and momentum exchange, thereby completing the pressurization effect of the low-pressure gas. The ejector has the advantages of simple structure, convenient disassembly and assembly, safety and reliability, and long practical life. It can be widely used in fluid pressurization and vacuum extraction, and is not sensitive to complex working conditions such as flammable and explosive gases and impurities. At present, ejectors are widely used in refrigeration, metallurgy, aviation, natural gas collection, seawater desalination, sewage treatment and other technical fields. [0003] However, the mixing chamber of the traditional injector supercharger mainly performs axial momentum exchang...

AI Technical Summary

Problems solved by technology

[0003] However, the mixing chamber of the traditional injector supercharger mainly performs axial momentum exchange, the momentum exchange efficiency is low, the mixing boundary layer is thin and long, the injection boosting efficiency is low, the adjustment range is small, the operating elasticity is low, and the injector length is long. Applications are limited in many fields

The currently existing dynamic strong swirl ejector (CN201510286589.0) uses external excitation to achieve strong swirl ejection, and has a complex structure and sealing requirements

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