On-line fast balance correcting method of COG (coke oven gas) pressurizing fan

Abstract

The invention discloses an on-line fast balance correcting method of a COG (coke oven gas) pressurizing fan. According to the method, a rotating speed triggering cursor is arranged on a fan rotating shaft, a laser rotating speed meter is adopted for detecting the rotating speed of the fan, and a waveform analysis instrument is adopted for measuring the industrial frequency vibration amplitude value of each bearing seat; the fan is fully filled with gas and is started to operate, the vibration amplitude value and the phase of each bearing seat are measured, an air door is gradually opened for loading a load, the fan operation work conditions at different opening degrees of the air door are recorded, the industrial frequency vibration amplitude value and the phase of each bearing seat are recorded, when the phase angle deviation between the adjacent work conditions is smaller than 15 degrees, the condition shows that the fan operation condition is stable, and the data are recorded and are used for balance correction; a weight balancing block is arranged in a way that a rotor and the bearing seats are adjacent to the weight balancing surface, in addition, the angle and the weight balancing mass are set, and meanwhile, proper weight balancing holes are selected for setting the weight balancing blocks. The method has the advantages that the on-line fast balance correction can be implemented on the COG pressurizing fan, the balance requirement of the fan is met, the balance correcting efficiency of the fan is improved, and the normal and reliable operation of the fan is ensured.

Description

technical field [0001] The invention relates to an online rapid balance correction method for a COG gas pressurized fan. Background technique [0002] COG gas pressurization fan is the key equipment of gas pressurization station, widely used in metallurgical industry. Such as figure 1 As shown, the COG gas pressurized fan has a complex structure, which is composed of four-stage compression rotors 1, and every two rotors are connected in series on a rotating shaft 2, and the two ends of the two rotating shafts 2 are provided with bearing housings 6 and elastic couplings are used in the middle 3 connected, the drive motor 4 drives the two rotating shafts 2 to rotate through the elastic coupling 5, and pressurizes the gas through the four rotors 1. [0003] The speed of the COG gas pressurized fan is 2980 rpm, and the balance requires high precision. Usually, the dynamic balance function of the CSI-2130 waveform analyzer is used to perform multi-plane balance correction of e...

AI Technical Summary

Problems solved by technology

The COG gas pressurized fan has four-stage rotors and eight counterweight surfaces, and the second-stage rotor and the third-stage rotor are connected by elastic couplings. If a weight is installed on any counterweight surface, the system will have The process of redistribution of balance, the test data is the result of redistribution, not exactly the response of the counterweight, so the calculation result is incorrect, and single-sided balance cannot be used

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