A pressure equalization calibration method for flat-flame burners in gas branch pipes of heating furnaces

Abstract

The invention relates to a heating furnace coal gas branch pipe flat flame nozzle pressure balance calibration method. The method includes the following steps that (1) a heating furnace is in the normal production state, the pressure of a coal gas main pipe is stabilized at the normal working pressure, a heating zone total coal gas valve needing calibration is opened, and the coal gas pressure measured behind a branch pipe hand valve in the zone is 3000 Pa or above; (2) the differential pressure value of a first nozzle and a second nozzle is zero, and the before-nozzle pressure of the first nozzle and the before-nozzle pressure of the second nozzle are equal; and (3) the differential pressure value of the before-nozzle pressure of every two adjacent nozzles is zero, a measurement method isadopted for verifying that the pressure values of the first nozzle and a thirteenth nozzle in the zone are equal, in other words, the differential pressure value is also zero, and even when main pipecoal gas pressure fluctuates, it can be guaranteed that the pressure and flow before each nozzle in the zone are balanced. According to the heating furnace coal gas branch pipe flat flame nozzle pressure balance calibration method, under the condition that the heating furnace coal gas main pipe coal gas pressure fluctuates, the before-nozzle pressure and flow of each nozzle can be accurately calibrated, the using accuracy of equipment is guaranteed, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to a method for calibrating the pressure of a heating furnace burner, in particular to a method for calibrating the pressure equalization of a flat flame burner in a gas branch pipe of a heating furnace. Background technique [0002] After the heating furnace gas pipeline has been used for a certain number of years, the gas branch pipes and gas hand valves are dirty and blocked due to impurities in the gas, and the gas flow rate gradually decreases. After replacing the new valve or pipeline, the gas flow rate must be calibrated again. When calibrating the gas flow rate, the existing technology is calibrated by measuring the gas pressure value of each branch pipe. It is very difficult to calibrate the burner flow rate in each area when the gas main pipe pressure fluctuates greatly, and the pressure calibration of the flat flame burner of the heating furnace is not accurate. . Contents of the invention [0003] The technical prob...

AI Technical Summary

Problems solved by technology

When calibrating the gas flow rate, the existing technology is calibrated by measuring the gas pressure value of each branch pipe. It is very difficult to calibrate the burner flow rate in each area when the gas main pipe pressure fluctuates greatly, and the pressure calibration of the flat flame burner of the heating furnace is not accurate.

Images