Pole erecting machine

Abstract

The invention discloses a pole erecting machine which is characterized in that a nano ceramic material is sprayed on the surface of a flow guide body of the pole erecting machine by adopting a plasma thermal spraying mode, and a super polymer nano ceramic protective coating which has strong toughness, corrosion resistance and thermal shock resistance and has the thickness of 2-5 microns is formed on the surface of the flow guide body. And the gap between the flow guide body and the impeller is kept constant for a long time in the using process of the centrifugal compressor. The thickness of the coating is smaller, the coating is closer to an original curve of machining, and it can be guaranteed that the fit clearance between the flow guide body and the impeller is more accurate, so that the leakage amount is reduced, the energy consumption of the centrifugal compressor is reduced, and the overall efficiency is improved.

Description

technical field [0001] The invention relates to a pole machine, in particular to a guide body matched with an impeller in the pole machine, which belongs to F04D 29 / 00 in the International Patent Classification. Background technique [0002] A centrifugal compressor is a vane rotary compressor, also known as a turbo compressor, which is mainly used to compress gas. Its structure is mainly composed of a rotor and a stator. The rotor includes an impeller and a rotating shaft. The impeller has blades, a balance disc and a part of the shaft seal. The main body of the stator is a cylinder, as well as a diffuser, a bend, a return device, and an intake pipe. , exhaust pipes, etc. [0003] The working principle of the centrifugal compressor is: when the impeller rotates at a high speed, the gas is driven to rotate along with it. Under the action of centrifugal force, the gas is thrown into the diffuser behind, thus forming a vacuum zone at the impeller. Fresh gas enters the impell...

AI Technical Summary

Problems solved by technology

In many applications, what enters the impeller is humid saturated air, or some sulfide corrosive gases, which can easily corrode and oxidize the guide body, causing the gap between the impeller and the guide body to increase, affecting the interstage compression of centrifugal compressors ratio, resulting in a 2% to 5% decrease in overall machine efficiency

This level of proportion seems inconspicuous, but for large chemical plants, especially some continuous assembly lines, the negative "amplification effect" caused by it is very significant