US 12,000,758 B2
Leak detection for pressurized fluid systems
Antwan Shenouda, Mississauga (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Jun. 9, 2021, as Appl. No. 17/343,705.
Prior Publication US 2022/0397478 A1, Dec. 15, 2022
Int. Cl. G01M 3/26 (2006.01); B64D 37/32 (2006.01)
CPC G01M 3/26 (2013.01) [B64D 37/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A leak detection system, comprising:
a leak detection module that operatively connects to one or more pressure sensors to receive signals from the one or more pressure sensors that sense pressure in a detection volume, the leak detection module operable to execute a method, the method comprising:
determining or receiving a detection volume pressure based on the signals from the one or more pressure sensors;
comparing the detection volume pressure to a primary leak threshold;
outputting a primary fluid leak signal to indicate a primary fluid leak of a primary fluid between a primary fluid path and the detection volume when the detection volume pressure exceeds the primary leak threshold;
monitoring the detection volume pressure after crossing the primary fluid leak threshold; and
in response to a change in the detection volume pressure, outputting a dual primary-secondary fluid leak signal indicating a secondary fluid leak in addition to the primary fluid leak.