Invention Grant
US4436699A Monitoring system for checking electric rotary machine for local
overheating
失效
用于检查电动旋转机器的局部过热检测系统
- Patent Title: Monitoring system for checking electric rotary machine for local overheating
- Patent Title (中): 用于检查电动旋转机器的局部过热检测系统
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Application No.: US271356Application Date: 1981-06-08
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Publication No.: US4436699APublication Date: 1984-03-13
- Inventor: Kiyoshi Narato , Keizou Ohtsuka , Tooru Inada , Takashi Watanabe
- Applicant: Kiyoshi Narato , Keizou Ohtsuka , Tooru Inada , Takashi Watanabe
- Applicant Address: JPX Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX55-122946 19800906
- Main IPC: G01N27/00
- IPC: G01N27/00 ; G01N33/00 ; G01R31/34 ; H02H5/00 ; H02H7/06 ; H02K11/00 ; G01N15/00 ; G01N33/44
Abstract:
A monitoring system for checking an electric rotary machine for local overheating including a sensing device for sensing the concentration of minuscule particles in a gas serving as coolant for the machine, and a supply device for supplying to the sensing device a test gas containing minuscule particles of gasifiable liquid. The test gas is supplied to the sensing device by the supply device to permit the sensing device to perform a sensing operation, so as to determine whether or not the sensing device is functioning normally.
Public/Granted literature
- US4921616A Alveolar ceramic filters for high melting metals Public/Granted day:1990-05-01
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