Author(s)

Zeqing Hu ¹

Affiliation(s)

¹ Shijiazhuang Recycling Chemical Park Branch of Jinmei Jinshi Chemical Investment Group Co., Ltd, Shijiazhuang, Hebei 050000, China

Corresponding Author

ABSTRACT

A methanol synthesis compressor unit in our workshop experienced severe vibration during operation in March. The compressor is a centrifugal compressor manufactured by Shaangu, and its source motor is a three series steam turbine manufactured by Hangqi. The vibration alarm value of compressor support bearing is 62 um, and the trip value is 76 um. The rated speed of compressor unit is 11060rpm, and the outlet pressure of compressor is 6.4Mpa.
The specific situation is that the compressor was loaded on March 1, so that the overall vibration of the support bearing of the compressor increased from about 25um to 35um. On March 5th, due to the company's opportunity to reduce the load, the compressor's thrust pad displacement reached the alarm value, and the thrust pad was replaced. When the compressor set was started on March 15, the displacement value of the compressor was normal, the support bearing at the driving end was in the normal range, the vibration of the support bearing at the non driving end reached the trip value, and the compressor tripped. Before the start-up, the top clearance of the driving end of the compressor is 0.21mm and that of the non driving end bearing bush is 0.25mm. The total thrust clearance is within the design range.

KEYWORDS

CITE THIS PAPER

Zhiyuan Zhou. Cause Analysis on Vibration Trip of Methanol Synthesis Gas Compressor. Journal of Engineering Mechanics and Machinery (2021) 6: 43-45. DOI: http://dx.doi.org/10.23977/jemm.2021.060208.

REFERENCES

[1] Yuan Wei, Yang Jun. Research on Energy Saving and Consumption Reduction Measures of Circulating Fluidized Bed Boiler [J]. Theoretical Research on Urban Construction (Electronic Edition), 2012, (36).
[2] Wang Chao. Measures for Energy Conservation and Consumption Reduction of Circulating Fluidized Bed Boiler [J]. Commodity and Quality, 2015, (37): 26-26.

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