Leakage testing method for a plate heat exchanger

Details Leakage testing method for a plate heat exchanger Leakage testing method for a plate heat exchanger

1998-10-20

2000-05-16

Larkin, Daniel S.

Measuring and testing

With fluid pressure

Leakage

73 407, 73 405R, G01M 318, G01M 322

Patent

active

060620684

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.

REFERENCES:
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patent: 3522008 (1970-07-01), Defabaugh et al.
patent: 4138856 (1979-02-01), Orlowski
patent: 4550688 (1985-11-01), Zuber et al.
patent: 5872308 (1999-02-01), Bowling
Fels, W., "Schnellnachweis von Plattendurchbruchen bei Warmeaustauschern", Molkerei-Zeitung Welt der Milch, 1985, vol. 39, No. 21, pp. 601-603.

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