Leak testing method and apparatus for use with heat exchangers
US10458879B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2015 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Jul 15, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2200/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The apparatus is used for testing heat exchangers having mutually separate first and second flow paths. The apparatus provides a high pressure fluid source (10) to connect with a first pressure-sealed flow path of the heat exchanger under test. A volumetric sensor (VS) is connected to a selected pressure-sealed flow path, having a sensing chamber arranged to receive fluid from the selected flow path. The sensing chamber is connected to a further fluid source such as a compressed air reservoir (16) which provides a high pressure gas supply. Movement of a magnetic float within the sensing chamber is detected by an array of Hall effect sensors, enabling a CPU to calculate the rate of leakage between the two flow paths which may be signaled to a local display and/or alarm or remotely via an internet connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.