Combined filter device for bearing gas of expansion machine

• Main Authors: MA WEN, LING RONGJIA, ZHANG XINNIAN, ZHAO FEI, XIAO XINMIN, CHEN XUCHUN, FU ZIZHEN
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2014
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model provides a combined filter device for bearing gas of an expansion machine. Compressed air out of a bearing gas source enters from the inlet of a coarse filter system, and the outlet of coarse filter system is communicated with a fine filter system through a pipeline. According to the combined filter device, the coarse filter system and the fine filter system are adopted, the coarse filter system is provided a coarse filter bypass valve, and the compressed air out from the bearing gas source can be switched and flow through the coarse filter bypass valve when the coarse filter is failed; the fine filter system is provided with a main fine filter and an auxiliary fine filter, and the compressed air which is subjected to coarse filter can be switched to flow through the auxiliary fine filter when the main fine filter is failed, so that the technical problems of single filter means, low filter capacity, inconvenient filter replacement and the like can be successfully solved, the filter capacity