US 12,422,289 B2
Shock wave fluid pressure transducer element
David Weber, Seuzach (CH); Tobias Frommenwiler, Winterthur (CH); Marco Laffranchi, Winterthur (CH); and Andreas Wyss, Zurich (CH)
Assigned to Kistler Holding AG, Winterthur (CH)
Filed by KISTLER HOLDING AG, Winterthur (CH)
Filed on Jun. 8, 2022, as Appl. No. 17/835,151.
Claims priority of application No. 21179157 (EP), filed on Jun. 11, 2021.
Prior Publication US 2022/0397436 A1, Dec. 15, 2022
Int. Cl. G01F 1/667 (2022.01); G01F 1/66 (2022.01)
CPC G01F 1/667 (2013.01) [G01F 1/662 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A transducer element for the detection of a transverse transition pressure of a shock wave acting along a pressure axis in a fluid, wherein the transverse transition pressure acts in a direction that is normal to the pressure axis, the transducer element comprising:
a body extending along a longitudinal axis that defines a central axis of symmetry of the body;
wherein the body defines a nose portion terminating in a nose vertex at one opposite end of the nose portion;
wherein the body defines a metallic measurement portion defining a rigid external wall extending parallel to the central axis of symmetry of the body without any protrusions in a direction normal to the central axis of symmetry of the body;
wherein the nose portion oppositely disposed from the nose vertex is disposed adjacent to the measurement portion and tapers along the longitudinal axis from the measurement portion to the nose vertex of the nose portion;
wherein for the detection of a transverse transition pressure of a shock wave in a fluid, the body is configured to be arrangeable with its longitudinal axis extending parallel to the expected propagation direction of the shock wave;
wherein for the detection of a transverse transition pressure of a shock wave in a fluid, the nose portion is configured to be arrangeable to face the shock wave;
at least three pressure transducers disposed in the measurement portion in alignment along the longitudinal axis;
wherein each of the at least three pressure transducers includes a pressure-sensitive pressure receiving surface;
wherein the pressure receiving surface of each of the at least three pressure transducers extends in a plane that is arranged parallel to the longitudinal axis; and
wherein the at least three pressure transducers are arranged spaced apart at a distance from each other along the longitudinal axis.