Application of domestic motor-driven centrifugal compressor unit in natural gas pipeline
2021
Jianchen LIU | Pan LIU
Motor-driven centrifugal compressor unit has been widely installed in the compressor station of natural gas pipeline in recent years. Motor-driven compressor unit industry of China starts late but develops fast. Here, the development and application of domestic motor-driven centrifugal compressor unit in natural gas pipeline was reviewed, and the main technical characteristics of compressor unit were described systematically, including combination mode of the main units, complete mode, electric motor, variable-frequency speed regulation device and control system. Through operation data analysis, typical fault analysis and comparison with imported unit, the advantages and disadvantages of the domestic motor-driven compressor unit were summarized, and suggestions were put forward in terms of design, operation, management and after-sales service. Moreover, prospect was presented from the prospective of development of domestic motor-driven compressor unit above 20 MW, promotion of domestic motor-driven compressor unit, application of high speed variable-frequency asynchronous motors, development of integrated compressor, development of magnetic bearing and its application in domestic split type compressor unit. Generally, it is concluded that the domestic motor-driven compressor unit will become the core power equipment of China's gas pipeline in future, and it will be safer, more environment-friendly, more reliable and more economic.
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