Method of leak testing an assembled plate type heat exchanger
US6009745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1997 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Oct 10, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2200/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of positively locating the source of leaks in the heat transfer surface area of the plate heat exchanger between separate product and service fluid paths arranged in an intimate heat exchange relationship is disclosed. The method comprises: PA1 circulating a solution through one fluid path of the exchanger, the solution consisting of solvent with appreciable vapor pressure under the chosen test conditions; PA1 providing a gas flow across the other fluid path of the exchange surface by means of forced or natural convection; PA1 applying a positive pressure differential between solution and gas stream; and PA1 detecting visually the location of deposited solutes on or around the other fluid path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.