Moisture and rust detector for hydraulic control systems
US4040790A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1976 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Jul 29, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/29
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Steam turbine hydraulic control system utilizing hydraulic fluid more dense than water accumulates any moisture present as vapor over the fluid reservoir. A detector for such moisture vapor which indicates unacceptable moisture admixed with the hydraulic fluid is connected in gas flow relationship with fluid reservoir at a level above the fluid level. A detector element, preferably a polished ferrous metal plate which readily rusts in the presence of water vapor, is maintained in a detector chamber having transparent portions, allowing for visual inspection to detect rusting and, hence, the presence of moisture in the hydraulic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.