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Patent Searching and Data


Title:
WATER INJECTION TYPE SCREW FLUID MACHINE
Document Type and Number:
Japanese Patent JP2012189009
Kind Code:
A
Abstract:

To provide a water-lubricated type screw fluid machine that has long life span of a shaft seal device and can identify or foresee the shaft seal device and can correctly notify an operator of the device.

The screw fluid machine 1 has a first non-contact seal 16, a second non-contact seal 17 and a lip seal 18 disposed between a rotor chamber 3 and a bearing 11 for a rotor shaft 7 located on the high pressure side, and in this order from a side of the rotor chamber 3. It includes: a pressurized communicating channel 24 for introducing high-pressure target gas into a pressurized space 20 formed between the first and second non-contact seals 16, 17; a pressurized pressure detecting device 32 for detecting a pressure P1 of the pressurized space 20, and an alarm device 33 for generating an alarm when a value P1 detected by the pressurized pressure detecting device 32 is out of a predefined range of pressurized pressure.


Inventors:
NOGUCHI TORU
Application Number:
JP2011053794A
Publication Date:
October 04, 2012
Filing Date:
March 11, 2011
Export Citation:
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Assignee:
KOBE STEEL LTD
International Classes:
F04C18/16; F04C27/00; F04C28/28
Domestic Patent References:
JP2004003602A2004-01-08
JP2009287413A2009-12-10
Foreign References:
US3975123A1976-08-17
Attorney, Agent or Firm:
前田 厚司
山田 卓二
田中 光雄