Gas compressor with variable camber guide vanes

Abstract

The invention discloses a gas compressor with variable camber guide vanes. The gas compressor is composed of a machine body assembly, a supercharging device and a servo motor. The supercharging deviceis installed between a gas inlet and a main gas chamber of the machine body assembly, gas supercharging is achieved, the supercharging process is stable, energy consumption is low, and high supercharging is achieved according to practical requirements. The servo motor is installed on the outer wall side of a shell. The variable camber guide vanes adopted in the gas compressor are simple in structure and are each composed of a fixed vane and a hinged vane, wherein the hinged position of the fixed vane and the hinged vane is located in the middle of the whole vane, the camber can be adjusted, and vane surface cambers of the two variable camber guide vanes are installed opposite to impeller bins. The inherent frequency of the vanes is changed, and the bending torsional stress of the roots ofthe vanes is reduced. Impellers adopted in the gas compressor are large in gas suction amount, low in noise, high in working efficiency and long in service life, flow equalizing processing for gas suction and gas exhaust is achieved, balance of gas pressure in the shell is ensured, and the surge phenomenon is avoided.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a compressor with variable curvature guide blades. Background technique [0002] The compressor is a component in a gas turbine engine that uses high-speed rotating blades to do work on the air to increase the air pressure. The front part of the compressor impeller blade is curved and called the guide wheel, and its function is to guide the gas into the working impeller without impact, reducing the impact loss of the air flow. The compressor impeller of the small supercharger generally integrates the guide wheel and the working impeller. There is a diffuser at the outlet of the impeller of the compressor, so that the kinetic energy obtained by the gas in the impeller can be converted into pressure as much as possible. There are two types of diffusers: vane type and slot type. The casing of the compressor has inlets and outlets for airflow. The inlet is generally arranged ...

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Problems solved by technology

[0003] Chinese patent 201410692598.5 discloses "a sliding vane compressor", which is characterized by high structural reliability, low cost, high-temperature gas tolerance, high isentropic compression efficiency and other working effects; but the rotor rotates during the working process It consumes the energy of compression and work, which makes the utilization rate of energy lower, and at the same time, the working noise is louder, and the working efficiency of the compressor is low.

However, the guide vane adopts a conventional design, so that when the whole compressor works in a non-design state, there will be a surge phenomenon

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