Coal powder particle size detection device and coal mill

By installing a particle size detection device inside the connecting pipe of the coal mill outlet pipe, and combining it with acoustic and electrostatic sensors to monitor the coal powder particle size in real time, the problem of complex and non-real-time coal powder particle size detection in the existing technology is solved, and the effects of simplified operation and improved detection accuracy are achieved.

CN224383055UActive Publication Date: 2026-06-19GD POWER DEVELOPMENT CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GD POWER DEVELOPMENT CO LTD
Filing Date
2025-06-20
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In existing technologies, the process of detecting the particle size of pulverized coal in coal-fired power plants is complex and cannot obtain the particle size distribution of pulverized coal entering the furnace in real time, which makes it difficult to adjust the combustion.

⚗Method used

A coal powder particle size detection device is designed. It is connected to the coal mill outlet pipe through a connecting pipe. The particle size detection device directly detects the coal powder particle size in the channel of the connecting pipe. Combined with an acoustic wave conduction sensor and an electrostatic sensor, the particle size of the coal powder particles is measured in real time, which simplifies the operation process and improves the detection accuracy.

🎯Benefits of technology

It enables real-time monitoring of the particle size of pulverized coal entering the furnace, simplifies the operation process, reduces manpower and time costs, provides more accurate combustion adjustment data, improves combustion efficiency, and reduces emissions.

✦ Generated by Eureka AI based on patent content.

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Abstract

This disclosure relates to a pulverized coal particle size detection device and a coal mill. The pulverized coal particle size detection device includes a connecting pipe and a detection component. The connecting pipe is used to connect to the outlet pipe of the coal mill. The interior of the connecting pipe has a channel for pulverized coal to pass through, and an opening communicating with the channel is formed on the side wall of the connecting pipe. The detection component includes a particle size detection device and a sealing plate. The particle size detection device is mounted on the sealing plate, and the sealing plate detachably covers the opening. The particle size detection device is connected to the connecting pipe and is used to cover the opening, and the particle size detection device is located inside the channel. Through the above technical solution, by connecting the connecting pipe to the outlet pipe of the coal mill, the particle size detection device can directly detect the pulverized coal entering the channel of the connecting pipe. This allows for real-time acquisition of the particle size distribution of the pulverized coal entering the furnace, enabling operators to adjust the output and air volume of the coal mill in a timely manner based on real-time data, thereby achieving combustion optimization and energy saving and emission reduction.
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