Title:
BEARING GAS SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP3482029
Kind Code:
B2
Abstract:
PURPOSE: To supply a suitable quantity of clean gas from which minute solid matter or the like is removed by disposing a filter for filtering dust in the gas in the midway of a gas supply pipe, and providing a pressure regulating means for regulating and setting the pressure of gas in the gas supply pipe to be higher than the pressure of gas in a suction chamber by a designated differential pressure.
CONSTITUTION: Some of high pressure gas in a discharge chamber 20 passes a pressure regulating valve 75 and a filter 73 through an undecontaminated gas supply pipe 62 to be supplied to a thrust bearing 33, a suction side journal bearing 35, a discharge side bearing 36, and a gas seal device 58, respectively through orifices 721, 722, 723, 724. A differential pressure detection and transmission device 74 detects a differential pressure between the pressure of gas in a clean gas supply pipe 64 and the pressure of gas in a balance pipe 69. The pressure regulating valve 75 opens the valve if the differential pressure is less than a preset value, and closes the same if more than the preset value. The filter 73 filters dust included in the passing gas and minute solid matter such as fine particles or the like generated in the centrifugal compressor.
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Inventors:
Akitami Kaneko
Application Number:
JP5826195A
Publication Date:
December 22, 2003
Filing Date:
February 23, 1995
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F04D29/04; F04D17/10; F04D29/056; (IPC1-7): F04D17/10; F04D29/04
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)