Fire hose testing apparatus and method
US8554497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2008 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Sep 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/2815
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for testing a plurality of fire hoses having respective service test pressures and the test apparatus therefor wherein each hose is required to maintain a test pressure for a specified duration to pass the test. The test pressure is proportional to the service test pressure. Each hose is coupled to a respective hose fitting of a respective branch test conduit. Each branch test conduit includes an isolation valve, a pressure transducer, and a hose fitting downstream of the isolation valve. A variable frequency-variable speed controls a motor which drives a positive displacement water pump supplying water to and pressurizing a water header conduit and a plurality of branch test conduits interconnected therewith. An algorithm applied to the error signal for a respective hose line generates a pump speed command limited by the controller to regulate the rate of increase of pump output pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.