Patent · US Expired

Method for finding a leak in pressure-carrying vessels and apparatus for carrying out the method

US4640121A · kind A · utility

27Cited by

3References

18Claims

0Family size

Assignee

Kraftwerk Union Aktiengesellschaft · DE

Inventors

Wilhelm Leuker · Pinzberg, DE
Gunter Stipsits · Fairview Avenue, DE
Bernhard Thiel · Forchheim, DE

Key dates

Filing date	Sep 28, 1984
Grant date	Feb 3, 1987
Priority date	—
Expiry date	Sep 28, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E30/30
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining the location of a leak in pressure-carrying vessels, including a plurality of probes spaced-apart on walls of the vessels for picking up high-frequency solid-conducted sound noises, and an amplifier connected to the probes, includes forming an r.m.s. value in the amplifier from the sound noises, comparing the r.m.s. value with a threshold value, issuing a signal if the r.m.s. value exceeds the threshold value, comparing the solid-conducted sound noises from at least two probes with each other for localizing the leak, placing the r.m.s. values of the solid-conducted sound noises in a relationship relative to the spacing between the probes based on the comparison, and determining the location of the leak as the location of the maximum solid-conducted sound noise from the relationship.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.