A multi-stage vane compressor structure with independent rotation and sequential acceleration without stationary vanes

Abstract

The invention discloses a multi-stage vane compressor structure with independent rotation and sequential acceleration without stationary vanes, which belongs to the field of fluid compressors; the technical problem to be solved is to provide a concentric and non-axial, multi-stage vane However, the compressor structure with different blade speeds at each stage; the technical solution adopted to solve this technical problem is: a multi-stage vane compressor structure with independent rotation and sequential acceleration without stationary blades, including the first-stage compressor, and multiple sequentially superimposed and connected The middle compressor and the last stage compressor, the first stage compressor and the middle compressor have the same structure, the outlet of the first stage compressor is connected to the inlet of the middle compressor, and the outlet of the middle compressor is connected to the inlet of the last stage compressor; The invention can be widely used in the field of fluid pressurization.

Description

technical field [0001] The invention discloses a multi-stage non-stationary vane independently rotating and sequentially accelerating vane compressor structure, which belongs to the technical field of fluid compressors. Background technique [0002] At present, the common fluid compressors are mostly cylinder type, screw type, and impeller type compressors. The internal friction coefficient of cylinder type and screw type compressors is large, and generally needs to be lubricated with oil, which has a short service life and high noise. The machine is generally arranged with multi-stage impellers coaxially, so the impellers rotate at the same speed when working, and there are static blades installed between the impellers, the gas is retained by the static blades, the density increases, the flow velocity slows down, and the pressure increases. In the process of increasing the pressure, the internal temperature of the compressor will increase. In this coaxial multi-stage vane c...

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Problems solved by technology

[0002] At present, the common fluid compressors are mostly cylinder type, screw type, and impeller type compressors. The internal friction coefficient of cylinder type and screw type compressors is large, and generally needs to be lubricated with oil, which has a short service life and high noise. The machine is generally arranged with multi-stage impellers coaxially, so the impellers rotate at the same speed during operation. Static blades are installed between the impellers, and the gas is retained by the static blades, the density increases, the flow velocity slows down, and the pressure increases.

In the process of increasing the pressure, the internal temperature of the compressor will increase. In this coaxial multi-stage vane compressor, the temperature increase will consume energy, and this part of the temperature is mostly useless work.

At the same time, this kind of compressor is often prone to surge phenomenon due to the asynchronous multi-stage compression of the airflow. In order to control the surge and rotational stall, it is necessary to add more control systems, such as the control system for changing the angle of the stationary impeller, etc. This leads to a more cumbersome and complex compressor structure, which increases the manufacturing difficulty and cost of the vane compressor

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