Method of testing a plate heat exchanger for leakage
US5872308A · kind A · utility
9Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1995 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Sep 28, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vessel such as a dairy pasteuriser having a path B for product and a separate path A for coolant in intimate relationship is tested for leaks by circulating a donor fluid under pressure in path A whilst a recipient fluid such as clean tap water is circulated in path B. If the donor fluid is an electrolyte, a probe (12) is placed in path B to measure the conductivity of the recipient fluid. A rise in conductivity over a period indicates leakage between the two paths, the rate of change indicating the size of the leak. Alternatively, the donor fluid can be a gas, and leakage detected using an untrasound probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.