High-power magnetic levitation high-speed motor directly-connected atomizer

Abstract

The invention relates to a high-power magnetic levitation high-speed motor directly-connected atomizer. An atomizing wheel cooling water system is arranged on the atomizer and is composed of a coolingwater distributing device and a cooling water inlet pipe; the cooling water distributing device is coaxially fixed to a motor rotor shaft and located above a magnetic levitation motor, and a throughhole is formed in the center of the cooling water distributing device and used for a feeding pipe of the atomizer to penetrate through; a cooling water buffering cavity is formed in the cooling waterdistributing device, a water inlet is formed in the upper portion of the cooling water buffering cavity and connected with a cooling water inlet pipe, a cooling water distributor is arranged at the bottom of the cooling water buffering cavity, and a cooling water outlet of the cooling water distributor extends downwards to an annular channel between the motor rotor shaft and the feeding pipe of the atomizer and communicated with an inner cavity of an atomizing wheel through the annular channel. Cooling water is distributed uniformly and then introduced into the atomizing wheel through the annular channel between the feeding pipe of the atomizer and the motor rotor shaft, and the motor rotor shaft and the atomizing wheel are cooled.

Description

Technical field [0001] The invention relates to the technical field of atomizers, in particular to a direct-connected atomizer with a high-power magnetic suspension high-speed motor for atomizing a desulfurizing agent during flue gas desulfurization. Background technique [0002] At present, the structure of the domestic high-speed rotary atomizer for flue gas desulfurization is roughly divided into two forms: gear-increasing drive and high-speed motor direct drive. [0003] Gear-driven atomizers are widely used at home and abroad. The design, manufacture, installation and maintenance of their speed-increasing mechanisms are very complicated; bearings and gears are very easy to wear when running at high speed, with many failure points and short life. High maintenance costs; when gears and bearings are running at high speeds, direct contact with rolling friction will cause greater power loss; in addition, gears and bearings need a lubricating oil supply system with a cooling device ...

AI Technical Summary

Problems solved by technology

[0005] However, the main shaft of the atomizer directly driven by an ordinary high-speed motor is still supported by a rolling bearing. Due to the limit speed limit of the rolling bearing, the diameter of the main shaft cannot be too thick; the main shaft bearing still needs a lubrication oil supply system with a cooling device, and the lubricating oil needs to be replaced regularly and Consider the problem of oil leakage; therefore, most of the current high-speed atomizer motors use permanent magnet synchronous motors (such as "a high-speed atomizer based on magnetic levitation permanent magnet synchronous motor" disclosed in the Chinese patent application number 201510896955.4), and its rotor The speed range is large, and it is completely supported by the right magnetic suspension bearing when rotating at high speed, so no lubrication is required, and a higher speed can be achieved, which meets the requirements of the desulfurization process; Motor burnout, this problem has become a technical bottleneck restricting high-power high-speed motors, especially for high-speed motors above 300KW, it is very difficult to design and manufacture

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