Method for measuring air-leaking rate of sinter machine body

Abstract

A method for measuring air leakage rate includes setting thermocouples separately at branch tube straight section of sintering air box and under grate of sintering machine to measure temperature t0 under the grate before air leakage and temperature tm at the straight section after air leakage, utilizing obtained t0 and tm to calculate out air leakage rate K by using formula of K=Co[(1-lambda)t0-tm] / Co[(1-lambda)t0-tm]+CA(tm-ta) where lambda-heat loss, Co-constant value, Ca- air specific heat and tA-temperature of air leaked in.

Description

technical field The invention relates to a method for measuring the air leakage rate of a sintering machine body, in particular to a method capable of measuring the air leakage rate of a sintering machine body on-line or off-line. Background technique The air leakage rate of domestic sintering machines is generally high, which is one of the important reasons for the high energy consumption (power consumption) of sintering machines. However, more than 50% of the air leakage rate of the sintering machine system is in the area of ​​the sintering machine body. Therefore, monitoring the air leakage rate in this area is the basis for effectively controlling the air leakage rate of the sintering system. According to the literature, the current main methods for measuring the air leakage rate of the sintering machine body are: ① Empirical formula estimation method The commonly used empirical formula is as follows: Q 漏 =K(L+B)P 0.42 Among them: Q 漏 —Leakage air volume, Nm...

AI Technical Summary

Problems solved by technology

The above-mentioned methods of testing the air leakage rate all rely on manual measurement, and cannot realize frequent online measurement, and are restricted by many field conditions