EP3732388A1 - Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé - Google Patents

Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé

Info

Publication number
EP3732388A1
EP3732388A1 EP18825592.1A EP18825592A EP3732388A1 EP 3732388 A1 EP3732388 A1 EP 3732388A1 EP 18825592 A EP18825592 A EP 18825592A EP 3732388 A1 EP3732388 A1 EP 3732388A1
Authority
EP
European Patent Office
Prior art keywords
tube
esp
section
sub
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18825592.1A
Other languages
German (de)
English (en)
Inventor
Marc HOLLMACH
Christian Lais
Fabio SCHRANER
Oliver Popp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser Flowtec AG
Original Assignee
Endress and Hauser Flowtec AG
Flowtec AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Endress and Hauser Flowtec AG, Flowtec AG filed Critical Endress and Hauser Flowtec AG
Publication of EP3732388A1 publication Critical patent/EP3732388A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/008—Branching pipes; Joining pipes to walls for connecting a measuring instrument
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
    • G01F1/3218—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices bluff body design
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3259—Means for detecting quantities used as proxy variables for swirl for detecting fluid pressure oscillations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/42—Orifices or nozzles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/18—Supports or connecting means for meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/363—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction with electrical or electro-mechanical indication

Definitions

  • the invention relates to a suitable for a transducer tube and a transducer formed by means of such a tube for detecting a measured variable of a flowing fluid or a measuring system formed therewith for measuring a flow parameter of a fluid flowing in a pipe.
  • volumen takenflußrate of flowing fluids in piping, esp. Fast flowing and / or hot gases and / or fluid streams of high Reynolds number (Re), or with a respective flow velocity (u) corresponding volume or mass flow rates often as vortex flowmeters or trained as differential pressure flowmeters
  • Measuring systems used are i.a. from JP-A 0682281, US-A 2017/0328750, WO-A 2008/061551, WO-A 2009/158605 or WO-A 2013/180843 are known and are among others. also offered by the applicant himself, for example under the trade name "DELTABAR PMD 55".
  • the measurement systems shown each have a detecting the pressure fluctuations in the flowing fluid, for example, to detect pressure fluctuations in a formed in the flowing fluid Kärmänschen vortex street, and / or detecting a pressure drop occurring in the flowing fluid useful transducer and thus electrically coupled measuring electronics which is adapted to receive and process sensor signals generated by the transducer, in particular the at least one
  • transducer is in turn by means of a in the course of each - used, for example, as a system component of a heat supply network or a turbine - used pipe, leading a flowing with a given flow direction fluid useful - for example, monolithic or composed of individual parts - tube.
  • the tube has a metallic tube wall, a lumen enclosed therefrom, and a metallic disruptive body arranged at least partially in the lumen of the tube-for example also connected to an inner side of the tube wall facing the lumen-and thus circulated during operation of fluid.
  • the disturbing body is designed, for example, as a bluff body formed in a prismatic manner, or the bluff body is in each case arranged to be in it By-passing fluid to induce vortex with a fluid rate dependent on the flow velocity (1 / fv tx ) such that a Kärmän vortex street is formed in the fluid flowing downstream of the obstruction body.
  • the bluff body as in, inter alia, in US-A 2017/0328750, WO-A 2008/061551, the
  • WO-A 2009/158605 or WO-A 2013/180843 also be adapted to increase a flow velocity of a fluid flowing past and / or through a static pressure prevailing in a fluid flowing past and / or through reduce and / or provoke a dependent of a volumetric flow pressure difference along a measuring path formed by the first and second sub-segments of the pipe wall, or as a diaphragm, esp. Namely as a standard diaphragm, be formed. in the
  • each of the tubes accordingly each one - usually circular
  • the tube may also in a upstream flow direction upstream of the bluff body, immediately downstream of the aforementioned first flow cross-section area both from namely namely first flow cross-section and from the aforementioned second flow cross-section, for example, namely greater than the second flow cross-section of the tube formed, circular third
  • the tube may have a fourth flow cross section deviating from the aforementioned first flow cross section and from the aforementioned second flow cross section, for example larger than the second flow cross section of the tube.
  • the two third and fourth flow cross sections may, for example, also the same size and / or substantially by a substantially circular cylindrical first region of the lumen enclosing, substantially hollow cylindrical first sub-segment of the tube or by a substantially circular cylindrical second region of the lumen enclosing, substantially be formed hollow cylindrical second sub-segment tube.
  • the aforementioned first flow cross section of the tube in turn, can accordingly be formed by a third subsegment of the tube enclosing a conical third region of the lumen and / or forming a concentric reduction in the flow direction.
  • each of the above-described transducers comprises at least two sensor elements - typically of identical construction - of which a first one
  • Sensor element is positioned in a region located downstream of the obstruction body.
  • the second sensor element described above serves to detect pressure fluctuations in the Kärmän vortex street formed in the flowing fluid and to convert it into a sensor signal representing the pressure fluctuations, namely to provide an electrical signal, which is provided here a pressure prevailing within the fluid, due to opposing vortex downstream of the bluff body periodic fluctuations corresponding pressure corresponds or which has a corresponding to the rate of detachment of the vortex signal frequency ( ⁇ fv tx ).
  • openings in the pipe wall are provided for the purpose of connecting the sensor elements to the pipe or the coupling to the fluid guided therein, through which one is in each case transferred led by pressure serving pressure line or to each of which such a pressure line is connected.
  • pressure serving pressure line or to each of which such a pressure line is connected.
  • the invention consists in a tube for guiding a fluid flowing with a predetermined flow direction, comprising: a tube wall enclosing a lumen of the tube, for example metallic and / or monolithic, and a tube wall arranged inside the tube, yet at a lumen facing Inside the pipe wall associated with, for example, metallic and / or monolithic, bluff body.
  • the tube wall of the tube according to the invention has a more than 1 mm, for example more than 2 mm, amounting maximum wall thickness and at least two spaced-apart, for example, equal and / or gleichgeformte, sub-segments with one of the maximum wall thickness, for example, more than 30% more similar maximum wall thickness and / or by more than 1 mm, deviating, for example, less than 1 mm and / or more than 0.1 mm amount, wall thickness, wherein a first sub-segment in the flow direction upstream of the obstruction body and a second sub-segment at least partially in
  • Flow direction downstream of the first subsegment for example, namely at least partially in the region of the bluff body and / or at least partially in the flow direction
  • the invention consists in a formed by such a tube, the detection of at least one measured variable of a flowing fluid useful transducer, which also fixed to the first sub-segment of the tube wall and / or in the vicinity, for example
  • piezoelectric or capacitive or optical, first sensor element which is adapted to detect elastic deformation of the same subsegment and in one with the same
  • Deformations corresponding first sensor signal for example, with a dependent of the same deformation of electrical voltage and / or dependent of n salvageer deformation electric current to convert, and fixed to the second sub-segment of the pipe wall and / or in the vicinity, for example, piezoelectric or capacitive or optical and or to the first sensor element of identical, second sensor element, which is adapted to detect elastic deformations n soliciten subsegment and in one with the same
  • Deformations corresponding second sensor signal for example, with a dependent of n crafter deformation electrical voltage and / or a dependent of the same deformation electrical current to convert includes.
  • the invention also consists in a formed by means of such a transducer
  • Measuring system for measuring at least one, for example temporally variable,
  • Flow parameter for example, a flow rate and / or a volumetric flow rate, of a fluid flowing in a pipeline, which measuring system also a measuring electronics, which is adapted to receive and process both the first sensor signal and the second sensor signal, for example the generating measured values representing at least one flow parameter.
  • the tube has a, for example, more than 20 mm 2 amount and / or circular formed, maximum first flow cross-section.
  • This refinement further provides for the tube to have, in at least one region adjoining the disruptive body, for example formed between the obstruction body and the tube wall, a second flow cross-section deviating in size and / or shape from the maximum flow cross-section.
  • the tube may be in a flow upstream of the
  • deviating, for example, circular and / or larger than the second flow cross-section of the tube formed have third flow cross-section, and the tube can be located in a downstream flow direction downstream of the obstructed area one of the first Having flow cross-section as well as the second flow cross-section deviating, for example, the third flow cross-section same and / or circular and / or greater than the second flow cross-section of the tube formed fourth flow cross-section.
  • Flow direction upstream of the bluff body has a cylindrical, for example, circular cylindrical, the first area of the lumen enclosing, for example, hollow cylindrical, first sub-segment and wherein the tube in the flow direction downstream of the
  • Bluff body has a cylindrical, for example, circular cylindrical, second region of the lumen enclosing, for example, hollow cylindrical, second sub-segment.
  • the upstream of the first sub-segment has a one, for example, in the flow direction concentric reduction forming, conical third region of the lumen enclosing, for example, the first flow cross-section forming, third sub-segment.
  • the tube in the flow direction downstream of the second sub-segment, can also have a fourth sub-segment with a flow cross-section deviating from the flow cross-section of the second subsegment.
  • the first sub-segment of the pipe wall is circular and / or flat on an outer side facing away from the lumen.
  • the second sub-segment of the pipe wall is circular and / or flat on an outer side facing away from the lumen.
  • the first and second sub-segments of the tube wall are the same size and / or gleichgeformt, for example, identical, are.
  • the pipe wall and obstructing bodies are components of one and the same monolithic molded part.
  • the pipe wall and obstruction body consist of the same material.
  • the inside of the pipe wall has no welds.
  • the pipe wall is free of joints.
  • the tube wall has no openings or openings.
  • the inside of the tube wall has no projections.
  • the inside of the tube wall is smooth at least in the region of the subsegments.
  • the bluff body is adapted to increase a flow velocity of a passing and / or passing fluid and / or to reduce and / or along a static pressure prevailing in a fluid passing and / or flowing therethrough to provoke a formed by the first and second sub-segments of the pipe wall measuring a dependent of a volumetric flow pressure difference.
  • the bluff body is adapted to induce vortex in the fluid flowing past it, for example, such that in the downstream of the bluff body and / or along one of the first and second
  • the bluff body is formed as a prismatically shaped bluff body.
  • the bluff body is formed as a diaphragm, for example as a standard diaphragm.
  • the tube is made by a metal injection molding (MIM) process.
  • MIM metal injection molding
  • the tube further comprises an inlet side in the flow direction first pipe end receiving first connecting flange and a in
  • Pipe wall and the first and second connecting flanges can for example also be components of the same monolithic molded part.
  • a basic idea of the invention is to avoid undesired openings or breakthroughs in the tube wall of a tube suitable for a transducer of the type in question by providing two subsegments each serving as a sensor pocket in the tube wall, each for receiving at least one sensor element are suitable, wherein the wall thickness of each of the aforementioned subsegments can be readily chosen so that on the one hand in operation for the generation or processing of sensor elements generated by the sensor signals sufficient deformation is made possible and on the other hand a sufficient for the operation pressure resistance of the tube is guaranteed ,
  • Fig. 1 in a side view by means of a transducer and a thereto
  • FIG. 2 shows a top view of a measuring transducer suitable for a measuring system according to FIG. 1;
  • FIGS. 1, 2, 3A, 3B, 4A and 4B exemplary embodiments of a measuring system for measuring at least one possibly time-variable measured variable, in particular a flow parameter such as a flow velocity v and / or a volumetric flow rate V ', one in a conduit of flowing fluid shown.
  • the pipeline can, for example, as
  • the fluid may for example be an aqueous liquid, steam or, for example, a discharged from a steam line condensate.
  • fluid can also be, for example, a (compressed) natural gas or a biogas, and consequently the pipeline can also be, for example, a component of a natural gas or biogas plant or a gas supply network.
  • the measuring system For detecting the at least one measured variable, the measuring system has a transducer 10, which is provided or designed to be flowed through by fluid in a flow direction during operation and temporally changing pressures in the flowing fluid and / or a pressure drop occurring in the flowing fluid and / or or to detect pressure fluctuations in the flowing fluid, for example in a Kärmän vortex street formed therein, and in two with it
  • the measuring system has a measuring electronics 20 which is adapted to receive and process both the aforementioned sensor signals, for example to generate measured values XM ZU representing the at least one flow parameter.
  • the measuring system further includes a - housed for example in a pressure and / or shock-resistant protective housing 200 - measuring electronics 20 which are connected to the
  • Measuring transducer 10 is electrically connected or in the operation of the measuring system with the
  • Transducer 1 communicates.
  • the measuring electronics 20 are set up to receive and process the sensor signals s1, s2, for example to generate the measured values XM ZU representing the at least measured variable.
  • the measured values XM can, for example, be visualized on site and / or-wired or according to DIN IEC 60381-1 compliant via a connected fieldbus and / or wirelessly by radio or IEEE 802.15.1 or IEEE 802.15.4 compliant-to an electronic data processing system, such as a Programmable logic controller (PLC) and / or a process control station to be transmitted.
  • PLC Programmable logic controller
  • the protective housing 200 for the PLC Programmable logic controller
  • Measuring electronics 20 may be made of, for example, a metal, such as a stainless steel or aluminum, and / or by means of a casting process, such as casting. a precision casting or a
  • the measuring system as also shown in Fig. 1, for example, be designed as a measuring system in a compact design, in which the protective housing 200 together with the arranged therein
  • Measuring electronics 20 positioned directly on the transducer 10 and - for example by means of a neck-shaped connecting piece 300 - with the transducer 10 is rigid, possibly also releasably connected.
  • the measuring transducer for guiding the flowing fluid, the measuring transducer, as also shown in FIGS. 3A and 3B or 4A and 4B respectively, or readily apparent from a combination of the figures, comprises a tube 100 having a lumen 100 * of the tube, for example metallic and / or monolithic - pipe wall 1 10 and one within the tube 100 and its lumen 100 arranged, however, at one of the lumen 100 facing the inside of the tube wall 1 10 associated therewith - for example, metallic and / or
  • the same bluff body 120 may, for example, be designed or arranged to increase a flow velocity of the fluid flowing past and / or through a fluid flowing in and / or through it
  • Flow direction is provoked by a volume flow dependent pressure difference.
  • the bluff body may also be set up to be in it
  • Pipe wall and bluff body can advantageously, for example, from the same material, for example, one, possibly also stainless steel or a nickel-based alloy exist.
  • the pipe wall and disruptive bodies are constituents of one and the same monolithic molded part.
  • the pipe wall can advantageously be kept free of joints, which are usually expensive to produce and / or to be tested, or actually unwanted or annoying welds on the inside of the pipe wall can be avoided.
  • the tube is for a through
  • Metal injection molding (MIM) produced. At the
  • Metal powder injection molding is first of a fine metal powder and a likewise powdered plastic a pasty, yet sprayable mass with a metal powder content of typically more than 90 wt.% (Weight percent) prepared by means of
  • the pipe 100 as also indicated in FIGS. 3A and 3B respectively, is readily apparent from a combination of FIGS. 3A, 3B, 4A and 4B, according to a further embodiment of the invention further comprising, for example, more than 20 mm 2 and / or circular
  • Flow cross-section of the tube 100 corresponds to (A1 - A max ), on.
  • the tube 100 according to a further embodiment of the invention an inlet side in the flow direction first pipe end 10+ first
  • Pipe wall 1 10 and flanges 130, 140 may, as also in Fig. 1, 3A and 4A respectively indicated, also, for example, components one and the same, for example, the bluff body 120 with comprehensive, monolithic molding.
  • the tube 100 can also be designed, for example, such that in the flow direction upstream of the bluff body 120 there is a cylindrical, possibly also - as in FIGS. 3A and 3B or 4A and 4B respectively indicated - circular-cylindrical first region of the lumen
  • Flow direction downstream of the bluff body 120 has a cylindrical, possibly also circular cylindrical, second region of the lumen enclosing, for example, hollow cylindrical, second sub-segment 100-2.
  • the tube 100 in addition to the aforementioned sub-segments 100-1, 100-2 in the flow direction upstream of the aforementioned subsegment 100-1 a one,
  • the tube 100 in the flow direction downstream of the aforementioned subsegment 100-2 a for example, a diffuser or in
  • the tube 100 can be seen in at least one of them adjacent to the bluff body 120, for example also between bluff body 120 and tube wall 110 formed region with respect to size and / or shape of Railiere Harveyem maximum flow cross-section Ai deviating second flow cross-section A 2 .
  • the pipe 100 may be in a flow direction upstream of the bluff body 120, but downstream located downstream of the flow cross-section Ai an area designated in terms of size and / or shape of both Weil namely flow cross-section Ai and
  • Flow cross-section A 2 formed - third flow area A3 and in an in
  • Flow direction located downstream of the bluff body 120 also one in terms of size and / or shape of both the flow area Ai and from
  • Flow cross-section A4 can for example also be circular.
  • the flow cross-section A3 may be formed by the aforementioned sub-segment 100-1 of the tube 100 and the flow cross-section A4 by the aforementioned sub-segment 100-2 of the tube 100.
  • the pipe wall 1 10 a more than 1 mm amounts, for example, circumferentially or along an imaginary circumferential line constant, maximum
  • Wall thickness s max and at least two, esp. In the flow direction, spaced from each other, for example, equally sized and / or gleichgeformte, sub-segments (1 10-1, 1 10-2) each having one of the aforementioned maximum wall thickness s max deviating (namely in comparison smaller than this) wall thickness s-110-1 or s-110-2, of which two sub-segments, as also shown in FIGS. 3A and 4A respectively, a first sub-segment 1 10-1 in the flow direction
  • the two sub-segments 1 10-1, 1 10-2 are in particular provided to receive respectively at least one of the generation of one of the aforementioned sensor signals useful sensor element or to form corresponding sensor pockets of the tube.
  • the sub-segments 1 10-1, 1 10-2 of the tube wall 1 10 are accordingly equal in size and / or gleichgeformt, for example, identical in construction, and / or circular.
  • the sub-segment 100-1 and / or the sub-segment 100-2 can be formed flat on a respective outer side facing away from the lumen, for example to allow the respective sensor element to be coupled as simply as possible to the respective sub-segment.
  • the tube wall may advantageously also be designed, for example, such that it has no apertures or openings and / or that it has no projections or is smooth, at least in the region of the partial segments 1 10-1, 1 10-2.
  • the means 100 formed by the tube may advantageously also be designed, for example, such that it has no apertures or openings and / or that it has no projections or is smooth, at least in the region of the partial segments 1 10-1, 1 10-2.
  • Deformations corresponding first sensor signal for example, namely with a dependent of n salvageer deformation electrical voltage and / or one of the same
  • the transducer further comprises a partial segment 1 10-2 or in its vicinity, for example cohesively or adhesively, fixed, for example, to the sensor element 210 identical, second sensor element 220, which is adapted to detect elastic deformations n soliciten subsegment and in a corresponding with the same deformations second sensor signal, for example, with a dependent of n junker deformation electrical voltage and / or one of the same
  • Each of the sensor elements 210, 220 may be designed, for example, in each case as a piezoelectric, capacitive or even optical sensor element.
  • the wall thickness sno-i, sno-2 of the aforementioned subsegments 1 10-1, 1 10-2 is advantageously selected in each case such that a sufficient for the generation or processing of the sensor signals s1, s2 deformation allows, while sufficient
  • Compressive strength of the tube is ensured, and may for example be less than 1 mm and / or more than 0.1 mm and / or, for example, each also be chosen so that they are of the maximum wall thickness by more than 1 mm and / or more than 30% of the maximum
  • Wall thickness deviates.
  • Thetientirk Harvey maximum wall thickness in turn, for example, more than 2 mm, for example, be more than 5 mm.
  • each of the sub-segments 1 10-1, 1 10-2 on the lumen 100 * each side facing away from each one has a largest diameter which is not greater than a maximum diameter of the aforementioned flow cross-section Ai and / or less than 20 mm.
  • the bluff body is adapted to induce vortex in the fluid thereto, such that in the downstream of the bluff body 120 and / or along a by means of the sub-segments 1 10-1, 1 10-2 the tube wall 1 10 formed test section flowing fluid is formed a Karmane vortex street, and / or is the bluff body 120, as also indicated in FIGS. 3A and 3B or seen from their synopsis, as a prismatically shaped bluff body.
  • the Sectionsegemente 1 10-1, 1 10-2 the
  • Pipe wall 1 10 and the bluff body 120 are in this case in particular dimensioned and arranged so that the Generalsegement 1 10-2 in such an area adjacent to the lumen 100 * of the tube 100 and contacted the guided therein fluid, which in the operation of - for example when
  • Swirl plausibleflußmeßgrät trained - measuring system is taken regularly by the aforementioned Karman vortex street, so that the means of the sensor element 220th detected pressure fluctuations caused by periodic pressure fluctuations caused by the swirl body 120 with a rate of detachment ( ⁇ 1 / fv tx ) and the sensor signal s2 having a signal frequency corresponding to the rate of detachment n managerer ( ⁇ fv tx ).
  • measurement electronics 20 can also be set up for this, based on the signal frequency of the sensor signal s2, possibly also - as shown in the aforementioned JP-A 0682281 - taking into account also the sensor signal s1 measured values for the at least one measured variable to be detected, for example, the flow velocity and / or the
  • the bluff body 120 is provided or set up to provoke along a measuring section formed by the aforementioned sub-segments 100-1, 100-2 of the pipe wall 1 10 a dependent of a volumetric flow pressure difference, and / or is the bluff body , as also shown schematically in FIGS. 4A and 4B or also apparent from their combination, as a diaphragm, for example as a standard diaphragm.
  • the measuring electronics 20 can also be set up to determine, based on the sensor signals s1, s2, the aforementioned pressure difference and, derived therefrom, measured values for the at least one measured variable to be detected.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Selon l'invention un tuyau sert à guider un fluide s'écoulant de part en part selon une direction d'écoulement spécifiée, et comprend à cet effet une paroi tubulaire (110) renfermant une lumière (100*) du tuyau ainsi qu'un corps perturbateur (120) disposé à l'intérieur du tuyau, relié à celui-ci sur un côté intérieur, tourné vers la lumière, de la paroi tubulaire. Dans le tuyau selon l'invention, la paroi tubulaire présente une épaisseur de paroi (smax) maximale supérieure à 1 mm ainsi qu'au moins deux segments partiels (100-1, 100-2) espacés les uns des autres, présentant respectivement une épaisseur de paroi (s110-1, s110-2) divergeant de ladite épaisseur de paroi maximale (smax). Le segment partiel (100-1) est positionné dans la direction d'écoulement en amont du corps perturbateur (120), et le segment partiel (100-2) est positionné dans la direction d'écoulement en aval du segment partiel (100-1).
EP18825592.1A 2017-12-29 2018-12-10 Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé Pending EP3732388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017012067.6A DE102017012067A1 (de) 2017-12-29 2017-12-29 Rohr für einen Meßwandler, Meßwandler mit einem solchen Rohr sowie damit gebildetes Meßsystem
PCT/EP2018/084195 WO2019129480A1 (fr) 2017-12-29 2018-12-10 Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé

Publications (1)

Publication Number Publication Date
EP3732388A1 true EP3732388A1 (fr) 2020-11-04

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EP18825592.1A Pending EP3732388A1 (fr) 2017-12-29 2018-12-10 Tuyau pour un transducteur, transducteur comprenant un tuyau de ce type et système de mesure ainsi formé

Country Status (5)

Country Link
US (1) US11441930B2 (fr)
EP (1) EP3732388A1 (fr)
CN (1) CN111512083B (fr)
DE (1) DE102017012067A1 (fr)
WO (1) WO2019129480A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018110456A1 (de) 2018-05-02 2019-11-07 Endress + Hauser Flowtec Ag Meßsystem sowie Verfahren zum Messen einer Meßgröße eines strömenden Fluids
CN112113025B (zh) * 2020-09-10 2022-11-15 广东博智林机器人有限公司 一种管道压力阀以及料浆输送装置
US11506556B2 (en) * 2020-09-30 2022-11-22 Rosenmount Inc. Single-use plastic pressure sensor

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JPH0682281A (ja) 1992-09-01 1994-03-22 Yokogawa Electric Corp 渦流量計
US6591695B1 (en) * 1996-05-07 2003-07-15 Efg & E International Flow metering device for landfill gas extraction well
US5970801A (en) * 1997-12-30 1999-10-26 Bear Medical Systems, Inc. Variable orifice flow sensor
US7261002B1 (en) 1999-07-02 2007-08-28 Cidra Corporation Flow rate measurement for industrial sensing applications using unsteady pressures
US6536291B1 (en) * 1999-07-02 2003-03-25 Weatherford/Lamb, Inc. Optical flow rate measurement using unsteady pressures
JP2001194193A (ja) * 2000-01-14 2001-07-19 Oval Corp 流量計
CA2381456C (fr) 2001-04-25 2011-08-02 Oertli-Instrumente Ag Systeme de mesure de la pression d'une canalisation
WO2008061551A1 (fr) 2006-11-23 2008-05-29 Siemens Aktiengesellschaft Procédé de diagnostic d'un engorgement d'une ligne d'impulsions pour un transducteur de mesure de pression, et transducteur de mesure de pression
WO2009158605A2 (fr) 2008-06-27 2009-12-30 Rosemount, Inc. Mesures de débit affinées à l’aide de la vitesse
JP5435509B2 (ja) 2009-05-25 2014-03-05 国立大学法人電気通信大学 操作情報入力システム及び方法
JP2010276533A (ja) 2009-05-29 2010-12-09 Horiba Advanced Techno Co Ltd 流量測定装置及び流体圧力測定装置
US9200932B2 (en) 2012-05-29 2015-12-01 Rosemount Inc. Differential pressure transmitter with redundant sensors
DE102014119240A1 (de) 2014-12-19 2016-06-23 Endress + Hauser Gmbh + Co. Kg Durchflussmessanordnung nach dem Differenzdruckmessprinzip zur Messung eines Durchflusses eines Mediums
DE102017202896B4 (de) * 2017-02-22 2019-10-10 Siemens Aktiengesellschaft Durchflussmessanordnung sowie Messumformer zur Prozessinstrumentierung mit einer derartigen Durchflussmessanordnung

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WO2019129480A1 (fr) 2019-07-04
US11441930B2 (en) 2022-09-13
US20200340836A1 (en) 2020-10-29
CN111512083A (zh) 2020-08-07
DE102017012067A1 (de) 2019-07-04
CN111512083B (zh) 2022-07-05

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