公开(公告)号：US10948322B2

公开(公告)日：2021-03-16

申请号：US16082584

申请日：2017-02-13

Applicant: Endress + Hauser Flowtec AG

Inventor： Christian Lais ,  Andreas Strub ,  Dominique Wiederkehr

IPC: G01F1/32 ,  G01F1/86

Abstract: In a sensor assembly, a deformation body has two oppositely lying surfaces, an outer edge segment and a sensor blade extending from a surface outward. A protective apparatus protects the deformation body from pressure surges or abrupt changes of temperature on its surface. The protective apparatus includes at least one plate, extending radially inwardly so that a cavity is formed, which accommodates a region of the sensor blade adjoining the deformation body and remote from the distal end of the sensor blade, forming a gap between the plate and sensor blade. A sensor formed by the sensor assembly and a transducer element coupled therewith can be used for registering pressure fluctuations in a flowing fluid, such as steam having a temperature of 400 C and/or, a pressure of greater than 140 bar in order to measure flow parameters of the fluid.

公开(公告)号：US20240295422A1

公开(公告)日：2024-09-05

申请号：US18258280

申请日：2021-12-17

Applicant: Endress+Hauser Flowtec AG

Inventor： Christian Lais ,  Pierre Ueberschlag ,  Achim Wiest

IPC: G01F1/325 ,  G01F1/32 ,  G01F15/00

CPC classification number: G01F1/3266 ,  G01F1/3209 ,  G01F15/006

Abstract: The sensor comprises a deformation element (111) that is flat at least in sections and has a planar surface (111+) and an opposite planar surface (111 #), a sensor lug (112) extending starting from the first surface (111+) of the deformation element, a connection sleeve (113) extending starting from the deformation element, a transducer element (12), which is arranged within the connection sleeve (113) and contacts the surface (111+) of the deformation element with a contact surface, for generating an electrical sensor signal representing temporally changing movements of the sensor lug and/or temporally changing deformations of the deformation element, as well as fastening means, which are positioned within the connection sleeve (113) and are mechanically connected thereto, for fixing the transducer element (12) in the connection sleeve (113). The fastening means (13) of the sensor according to the invention comprise a spring assembly (131) formed by means of at least two stacked disk springs, wherein the disk springs are elastically deformed by exerting a pressing force which holds the transducer element against the deformation element.

公开(公告)号：US20200340836A1

公开(公告)日：2020-10-29

申请号：US16958948

申请日：2018-12-10

Applicant: Endress+Hauser Flowtec AG

Inventor： Marc Hollmach ,  Christian Lais ,  Fabio Schraner ,  Oliver Popp

IPC: G01F1/32

Abstract: The tube is used to conduct a fluid flowing through the tube in a specified flow direction and for this purpose comprises a tube wall (110), which encloses a lumen (100*) of the tube, and an interference body (120), which is arranged within the tube but is nevertheless connected to the tube wall at an inner face of the tube wall facing the lumen. In the tube according to the invention, the tube wall has a maximum wall thickness (smax) of more than 1 mm and at least two mutually spaced sub-segments (100-1, 100-2) with a respective wall thickness (s110-1, s110-2) that deviates from said maximum wall thickness (smax), wherein the sub-segment (100-1) is positioned upstream of the interference body (120) in the flow direction, and the sub-segment (100-2) is positioned downstream of the sub-segment (100-1) in the flow direction.

公开(公告)号：US11408757B2

公开(公告)日：2022-08-09

申请号：US16958936

申请日：2018-12-10

Applicant: Endress+Hauser Flowtec AG

Inventor： Ranier Höcker ,  Christian Lais

IPC: G01F1/32 ,  G01F1/325

Abstract: A measuring tube for guiding a fluid for a flow meter device according to the vortex measuring principle, wherein the measuring tube has an inflow-side opening in an inflow-side end face and an outflow-side opening in an outflow-side end face, between which the measuring tube extends in the axial direction includes: a bluff body which is arranged in the measuring tube, wherein the bluff body functions to bring about a Kármán vortex street with a flow-rate-dependent vortex frequency when a fluid flows through the measuring tube; at least one vortex detector for detecting vortexes of the vortex street and for providing vortex-dependent signals; and a control valve between the vortex detector and the outflow-side end face and axially spaced apart from the vortex detector, which annularly constricts the flow cross-section of the measuring tube.

公开(公告)号：US11441930B2

公开(公告)日：2022-09-13

申请号：US16958948

申请日：2018-12-10

Applicant: Endress+Hauser Flowtec AG

Inventor： Marc Hollmach ,  Christian Lais ,  Fabio Schraner ,  Oliver Popp

IPC: G01F1/32

Abstract: Disclosed is a tube configured to conduct a fluid flowing through the tube in a specified flow direction and for this purpose comprises a tube wall, which encloses a lumen of the tube, and an interference body, which is arranged within the tube but is nevertheless connected to the tube wall at an inner face of the tube wall facing the lumen. In the tube according to the present disclosure, the tube wall has a maximum wall thickness of more than 1 mm and at least two mutually spaced sub-segments with a respective wall thickness that deviates from said maximum wall thickness, wherein the sub-segment is positioned upstream of the interference body in the flow direction, and the sub-segment is positioned downstream of the sub-segment in the flow direction.

公开(公告)号：US10948321B2

公开(公告)日：2021-03-16

申请号：US15507350

申请日：2015-08-19

Applicant: Endress + Hauser Flowtec AG

Inventor： Christian Lais ,  Andreas Strub ,  Dominique Wiederkehr

IPC: G01F1/32 ,  G01F15/16

Abstract: The sensor assembly comprises: a bowl shaped, namely at least sectionally dished, membrane, with a curved surface and an oppositely lying surface; and a sensor blade extending from curved surface of the membrane. The membrane is so formed that at least one region of the curved surface adjoining the sensor blade is convex. A sensor formed by means of such a sensor assembly and by means of a transducer element coupled therewith and serving for generating a sensor signal representing movements of the sensor blade changing as a function of time and/or deformations of the membrane changing as a function of time, or a measuring system formed by means of the sensor and a measuring electronics connected thereto, can be used for registering pressure fluctuations in a flowing fluid, such as, for instance, a 400 C hot steam, for instance, in order to measure a flow parameter of the fluid.

公开(公告)号：US20180266857A1

公开(公告)日：2018-09-20

申请号：US15761472

申请日：2016-09-08

Applicant: Endress + Hauser Flowtec AG

Inventor： Christian Lais ,  Andreas Strub ,  Dominique Wiederkehr

IPC: G01F1/32 ,  G01F15/10

CPC classification number: G01F1/3209 ,  G01F1/3263 ,  G01F15/10

Abstract: A sensor assembly comprises a deformation body having two oppositely lying surfaces and an outer edge segment as well as a sensor blade extending from the surface to a distal end and having a left side, first lateral surface and a right side, second lateral surface. An overload protection apparatus extending from the edge segment to a distal end for protecting the deformation body against plastic, i.e. irreversible, deformation and having a support stirrup led with lateral separation around the sensor blade as well as two stops held by the support stirrup for limiting movement of the sensor blade, of which a first stop is located on the left side of the sensor blade and a second stop is located on the right side of the sensor blade. The stops are so dimensioned and arranged that an intermediate space formed therebetween receives only a portion (112a) of the sensor blade. The deformation body and the sensor blade are additionally adapted to be excited to execute oscillations about a shared static resting position and, in such case, to be moved relative to the overload protection apparatus, in such a manner that the sensor blade executes pendulum-like movements elastically deforming the deformation body. A sensor formed by means of such a sensor assembly as well as a transducer element coupled therewith and serving for generating a sensor signal representing movements of the sensor blade changing as a function of time and/or deformations of the deformation body changing as a function of time, and a measuring system formed by means of the sensor and a measuring electronics connected therewith can be used for registering pressure fluctuations in a flowing fluid, such as, for instance, a vapor or steam, at least at times having a temperature of 400 C and/or at least at times a pressure of greater than 140 bar, for instance, in order to measure flow parameters of the fluid.

公开(公告)号：US20170284841A1

公开(公告)日：2017-10-05

申请号：US15507350

申请日：2015-08-19

Applicant: Endress + Hauser Flowtec AG

Inventor： Christian Lais ,  Andreas Strub ,  Dominique Wiederkehr

IPC: G01F1/32

CPC classification number: G01F1/3254 ,  G01F1/3209 ,  G01F15/16

Abstract: The sensor assembly (11) comprises: a bowl shaped, namely at least sectionally dished, membrane (111), with a curved surface (111+) and an oppositely lying surface (111#); and a sensor blade (12) extending from the surface (111+) of the membrane. The membrane (11) is so formed that at least one region of the surface (111+) adjoining the sensor blade is convex. A sensor formed by means of such a sensor assembly and by means of a transducer element (12) coupled therewith and serving for generating a sensor signal representing movements of the sensor blade changing as a function of time and/or deformations of the membrane changing as a function of time, respectively a measuring system formed by means of the sensor and a measuring electronics connected thereto, can be used for registering pressure fluctuations in a flowing fluid, such as, for instance, a 400 C hot steam, for instance, in order to measure a flow parameter of the fluid.