Method and apparatus for ultrasonic leak location

US5433104A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ulrich Kunze · Gernsheim, DE
• Walter Knoblach · Forchheim, DE
• Gunther Schulze · Seukendorf, DE

Key dates

• Filing date: Aug 19, 1993
• Grant date: Jul 18, 1995
• Expiry date: Aug 19, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M3/24
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for ultrasonic leak location includes showing sound levels at various measuring locations along a measurement segment, which is a part of an annular structure, with a bar diagram. The same bar diagram is added again to the bar diagram. A particular sound level having the highest value and being located the most in the middle of the placed together bar diagrams is picked out. A segment around the associated pickup positions having one complete set of pickup positions is picked out. Two compensating straight lines for that set having an intersection being ascertained to identify the leakage position are determined. Another method includes providing at least a sound level having a position substantially facing the leakage position with a correction value. An apparatus for ultrasonic leak location includes a number of ultrasound pickups being disposed along a measuring segment. Amplifiers and components forming an effective value connect a data processing system to outputs of the ultrasound pickups. The data processing system forms a placed together representation of two bar diagrams. In another apparatus, the data processing system stores correction values for the sound level…