WO2012072126A1 - Dispositif et procédé de mesure de la vitesse d'un fluide multiphase - Google Patents

Dispositif et procédé de mesure de la vitesse d'un fluide multiphase Download PDF

Info

Publication number
WO2012072126A1
WO2012072126A1 PCT/EP2010/068616 EP2010068616W WO2012072126A1 WO 2012072126 A1 WO2012072126 A1 WO 2012072126A1 EP 2010068616 W EP2010068616 W EP 2010068616W WO 2012072126 A1 WO2012072126 A1 WO 2012072126A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
detector
fluid
radiation
multiphase fluid
Prior art date
Application number
PCT/EP2010/068616
Other languages
German (de)
English (en)
Inventor
Reiner Franz Schulz
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2010/068616 priority Critical patent/WO2012072126A1/fr
Publication of WO2012072126A1 publication Critical patent/WO2012072126A1/fr

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
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/7086—Measuring the time taken to traverse a fixed distance using optical detecting arrangements
    • 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
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • 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
    • G01F1/74—Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid

Definitions

  • the invention relates to a device for measuring the velocity of a multiphase fluid, which flows through a pipe in egg ⁇ ner predetermined flow direction.
  • the invention further relates to a method for measuring the velocity of a multiphase fluid flowing through a tube in a predetermined flow direction.
  • a multi-phase fluid also referred to as multiphase mixtures include liquid ingredients (eg oil, water) and solid constituents (eg rock, sand) as well as gaseous constituents ⁇ parts (for example, air, methane).
  • liquid ingredients eg oil, water
  • solid constituents eg rock, sand
  • gaseous constituents ⁇ parts (for example, air, methane).
  • US Pat. No. 6,097,786 discloses a method for analyzing a multiphase mixture.
  • the multiphase mixture is exposed to X-ray radiation, which is detected after irradiation of the multiphase mixture by single-pixel detectors.
  • a detector array comprising a plurality of detectors for different energy levels, is required for an analysis of the multiphase mixture energy ⁇ resolution, but no spatial resolution, measurable.
  • the associated apparatus includes a venturi nozzle positioned between the x-ray source and the detector assembly.
  • US Pat. No. 6,265,713 B1 likewise describes a method for a material analysis of a multiphase mixture. The analysis of the multiphase mixture is carried out by means of a detection of the attenuated after passing through the multiphase mixture gamma radiation.
  • the associated device includes a venturi nozzle which measures the velocity of the multiphase mixture.
  • a venturi nozzle which measures the velocity of the multiphase mixture.
  • US 4,884,457 an apparatus and a method for determining the flow rate of oil in egg ⁇ nem tube is disclosed.
  • two gamma measuring units based on the flow direction of the petroleum, arranged at a predetermined distance from each other on the outside of the tube.
  • the two gamma measuring units each comprise a gamma radiation source and a corresponding gamma detector. Gas bubbles present in the oil are detected by the two gamma detectors.
  • the flow velocity of the earth ⁇ oil is determined from the distance between the two gamma detectors.
  • Problem with this type of measurement of the flow rate of petroleum is the deformation and the number of gas bubbles. The measurement of the flow rate of crude oil is therefore relatively inaccurate due to the small number of clearly structured gas bubbles.
  • an apparatus and a method for determining the mass flow of a multi-phase mixture is ⁇ beschieben.
  • the multiphase mixture contains inter alia gas bases and flows through a pipe.
  • two gamma radiation sources, each with an associated gamma detector are arranged on the outside of the tube. From the detected propagation time difference between the signal of the first gamma detector and the signal of the second gamma detector, the flow rate of the multi ⁇ phase mixture is determined in the tube. Also, this measurement of the flow rate is relatively inaccurate due to the small number of clearly structured gas bubbles.
  • the object of the present invention is to provide a device for measuring the speed of a multiphase fluid, which offers improved accuracy in the measurement of the speed of the multiphase fluid.
  • the inventive device for measuring the VELOCITY a multiphase fluid that flows through a tube into a pre ⁇ given flow direction comprises
  • a detector unit arranged outside the tube, through which the photon radiation can be detected after passing through the multiphase fluid at a first measuring location and at a second measuring location, wherein the first measuring location and the second measuring location, relative to the flow direction, are predeterminable Distance,
  • the method according to the invention for measuring the velocity of a multiphase fluid flowing through a tube in a predetermined flow direction comprises the following steps: photon radiation passes through the multiphase fluid and is at a first measuring location and at a second measuring location
  • Measuring location where the first location and the second
  • Measuring location based on the flow direction, have a predetermined distance from each other,
  • an inner fluid structure of the multiphase fluid is determined by means of a pattern recognition
  • the speed of the multiphase fluid is determined at the second measuring location.
  • the inner fluid structure can first be determined from the detected photon radiation by means of pattern recognition and then the velocity of the multiphase fluid can be determined from finding the determined fluid structure
  • Inventive device according ⁇ achieves improved accuracy in Mes ⁇ solution of the speed of the multiphase fluid. It is particularly advantageous that only a ⁇ a Zige radiation source is needed and may be omitted more Strah ⁇ lung sources.
  • the multiphase fluid can be traversed by X-radiation or gamma radiation.
  • the arrangement of a radiation source which simultaneously Rönt ⁇ -radiation and gamma radiation emitted may be advantageous for certain applications.
  • the detector unit comprises a first detector field for the first measuring location and a second detector field for the second measuring location.
  • the first detector field and the second detector field can be arranged in a common detector.
  • the first detector field is arranged in a first detector and the second detector field in a second detector.
  • the photon radiation is radiated into the multiphase fluid between the first measuring location and the second measuring location.
  • the photon radiation is irradiated at the first measuring location and at the second measuring location in the multiphase fluid.
  • the radiation source irradiates the photon radiation in the region of a curvature of the tube in the multiphase fluid and the first detector field at a distance before the curvature of the tube and the second detector array are arranged at a distance to the curvature of the tube.
  • the first detector field and the second detector field are arranged symmetrically to the curvature of the tube.
  • FIG. 1 shows a plan view of a first embodiment of a
  • FIG 2 shows a plan view of a detector unit of the Vorrich ⁇ device according to FIG 1,
  • FIG. 6 shows a schematic diagram for determining the speed of a multiphase fluid
  • FIG. 7 shows a plan view of a second embodiment of a
  • Device for measuring the speed of a multiphase fluid 8 shows a representation of mutually perpendicular measuring systems
  • FIGS. 9-11 representations of an internal fluid structure detected by the detector unit, the projection of which is shown in FIG.
  • 1 designates a multiphase fluid (multiphase mixture) which flows through a tube (not shown in FIG. 1 for reasons of clarity).
  • the flow direction of the multiphase fluid ⁇ 1 is denoted by 2 (arrow).
  • the multiphase fluid contains at least two of the following components - in particular all three of the named components -, whereby at times sections may also occur in which only one component occurs:
  • Liquids for example petroleum, liquids in the food industry, industrial fluids in general;
  • any mixtures of the above components may be present.
  • the largest part consists of one or more gases. This is conceivable in natural gas production.
  • solid bodies can be moved, in which other phases are included, for example
  • the device comprises, according to the invention, a radiation source 3 arranged outside the tube and emitting a photon beam. lung 4 emitted, which is court ⁇ tet on the multiphase fluid.
  • the device according to the invention comprises a detector unit arranged outside the tube, through which the photon radiation 4 can be detected after passing through the multiphase fluid 1 at a first measuring location M1 and at a second measuring location M2, the first measuring location M1 and the second measuring location M2, with respect to the flow direction 2, have a predeterminable distance a from one another.
  • the detector unit comprises a first detector field D1 for the first measuring location M1 and a second detector field D2 for the second measuring location M2, wherein the first detector field D1 is located in a first
  • Detector 5 first matrix sensor
  • the second detector array D2 is arranged in a second detector 6 (second matrix sensor).
  • the radiation source 3 arranged outside the tube radiates the photon radiation 4 between the first measuring location M1 and the second measuring location M2 into the multiphase fluid 1.
  • the photon radiation 4 radiates through the multiphase fluid 1 and, after passing through the multiphase fluid 1, is detected at the first measuring location M1 by the first detector field D1 of the first detector 5 and at the second measuring location M2 by the second detector field D2 of the second detector 6.
  • the photon radiation 4 emitted in such a way and the detector arrays Dl and D2 are arranged such that a portion of the tube is illuminated by ⁇ by the radiation source 3 and that both detector arrays Dl and D2 by the Radiation source 3 are irradiated.
  • the photon radiation 4 first detector 5 and in the second detector 6 each electrical signals Sl and S2 formed, which are fed to a Ausireeinrich ⁇ device 7.
  • an internal fluid structure of the multiphase fluid 1 is determined in the evaluation device 7 by means of a pattern recognition (algorithm) for the first measuring location M1 and the second measuring location M2.
  • the internal fluid structure is located at the second measuring location M2 by comparing the internal fluid structure determined at the first measuring location M1 with the internal fluid structure determined at the second measuring location M2.
  • FIG. 2 shows a plan view of the detector unit of the device according to FIG. 1. Both detectors (matrix sensors) 5 and 6 are arranged at a distance a from one another.
  • the first detector 5 and the second detector 6 measure at the measuring points M1 and M2 the attenuation suffered by the photon radiation in the multiphase fluid 1 (multiphase mixture) and generate therefrom in the evaluation device 7 during an integration or measuring time t an image of the in flow Rich ⁇ device 2 flowing multiphase fluid 1.
  • the two detectors 5 and 6 are as can be seen from the figure, spatially resolving detectors matrix, the detection of spatial patterns - enabling - in particular via a two-dimensional projection of the spatial pattern.
  • the detectors 5 and 6 are preferably each apprisdimensi ⁇ onal formed in rows and columns and thus designed as a matrix detectors. This allows detection of two ⁇ dimensional or three-dimensional patterns.
  • a temporal evaluation of the signals of the first detector 5 and / or a temporal evaluation of the signals of the second detector 6, can be dispensed with.
  • d is the size of the phase B structure.
  • phase B For the case v ⁇ t> d shown in FIG. 4, the structures of phase B are lengthened and displayed with a lower contrast.
  • both detectors 5 and 6 simultaneously read out series of images and store them in the evaluation device 7. Using a pattern recognition algorithm, first images of the first detector 5 are evaluated. Internal fluid structures 13 are identified and defined, which stand out clearly from the background and the noise. Thereafter, the images taken with the second detector 6 are evaluated and searched for the previously identified and defined inner fluid structure 13.
  • FIG. 5 shows an inner fluid structure 13 of the multiphase fluid 1 which occurs in the images of the first detector 5 and of the second detector 6.
  • the multiphase fluid 1 in turn consists of the phase A and the phase B (two-phase mixture), wherein from the phase B, an internal fluid structure 13 is determined.
  • ⁇ 2 is the position of the detected by the second detector 6 internal fluid structure.
  • the flow velocity v of the multiphase fluid 1 flowing in the flow direction 2 can be repeated several times by means of several different ones internal fluid structures are determined.
  • the mean value of these flow rates is then output by the evaluation device 7.
  • the device according to the invention is maintenance ⁇ poor.
  • the flow of the multiphase fluid 1 is not altered by the velocity measurement as is the case in methods for measuring the velocity of a multiphase fluid that evaluates pressure differences (e.g., venturi tube).
  • the method is suitable for various multiphase systems:
  • the phases can be present in the solid, liquid or gaseous state. All combinations of aggregate states are possible.
  • a further phase for the purpose of speed measurement, such as granules of a contrast-increasing material. If the main phase absorbs little, the granules of egg ⁇ nem material should be used having a high absorption. If the main phase absorbs strongly, the granules should consist of a material with a low absorpti ⁇ on. To increase the accuracy of measurement, one can increase the distance a between the detectors 5 and 6. In this case, it is advantageous, as shown in FIG. 7, to allow the multiphase fluid (multiphase mixture) to flow on a slightly curved path. The pipe is slightly bent for this purpose.
  • the construction of the second embodiment of a device for measuring the speed of a multiphase fluid 1 shown in FIG. 7 corresponds essentially to the first embodiment shown in FIG. 1, so that reference is made to the explanation for FIG. Only the first detector 5 and the second detector 6 are no longer parallel but at an angle to each other to ensure opti ⁇ male detection of the photon radiation 3.
  • the first detector 5 is arranged at a distance before the curvature of the tube and the second detector 6 at a distance after the curvature of the tube.
  • the two detectors 5 and 6 are symmetrically spaced from the outer curvature of the tube.
  • parallax during the detection of the inner fluid structure 13 is at least greatly reduced or even avoided.
  • the evaluation of the electrical signals S1 and S2 delivered by the detectors 5 and 6 can take place online or offline.
  • an intermittent operation of the radiation ⁇ source 3. This can increase the life of the radiation source 3 and the average power consumption can be reduced.
  • the latter is advantageous for the power consumption and Wär ⁇ meabschreib. For example, it can be measured every 60 s for a duration of 5 s. In the pause of 55 s then an offline evaluation can be performed.
  • the evaluation unit 7 does not have to be designed for high computation speeds and is thus more cost-effective to implement.
  • this is advantageously achieved by means of a Point described.
  • This point can be eg the center of gravity or the center.
  • an inner fluid structure is defined in a first measurement, and subsequently the defined inner fluid structure is searched for and found in a second measurement. Through the recognition of the inner fluid-structure a reliable and particularly an accurate measurement of Ge ⁇ speed of the multiphase fluid can be realized.
  • the inner fluid structure is found at the second measuring location by a comparison of the inner fluid structure determined at the first measuring location with the inner fluid structure determined at the second measuring location M2.
  • a vertical arrangement is illustrated two ⁇ he or of several measurement systems in the following. If a three-dimensional structure 14 in the examination fluid is very anisotropic, then it may be advantageous to record two projections perpendicular to each other. It also provides redundancy and increases reliability.
  • the previously described measuring device is arranged twice at an angle to one another - preferably perpendicular to one another.
  • the position of the devices in the flow direction is preferably substantially identical.
  • Koen ⁇ nen thus both in the same plane and perpendicular to the motion direction ⁇ or - be arranged in different planes, with the latter embodiment, a time correction in the evaluation Note - particularly for reasons of space.
  • more than two Strahlungsquel ⁇ len detector units may be provided, for example, three to six, which are each arranged to each other in a different beam angle.
  • a continuous matrix detector is used, which preferably covers at least the entire diameter 15 of the item to be examined in a direction perpendicular to the direction of flow.
  • the length of the matrix detector should be 0.5 to 3 times the width in the direction perpendicular to the flow direction.
  • FIG 9-11 will now be explained how a pattern recognition of an arrangement of FIG 1 or FIG look 8. This is only to be understood as an example. Depending on the expected
  • composition of the fluid other algorithms may be useful.
  • FIG. 9 shows four projections, which were taken at four different times ti, t 2 , t3 and t 4 with a longitudinally elongated matrix detector-as a specific joint implementation of the detectors 5 and 6.
  • a projected structure 13 changes its shape from image to image only gradually - perhaps by rotation - but has countries after several education significantly changed and may not be as those known ⁇ when only one radiation source is seen ⁇ .
  • FIGS. 10 and 11 we will now explain a signi ⁇ ficant structure by means of which the velocity of the fluid can be deduced.
  • a partial image 17 is initially evaluated at the time ti. It is the "contrast" of Operabil ⁇ the determined. For this, the corresponding histogram is ⁇ upgraded.
  • One or a few key figures are derived that describe the strength of the contrast.
  • the partial image is partially shifted in sections - for example pi ⁇ xelweise - in the flow direction and the index (s) of the contrast is determined.
  • the shift can also be done by fractions of a pixel (so-called "sub pixel shift") for the purpose of increasing the accuracy using image interpolation methods.
  • the partial image which has the greatest contrast, shows the out most clearly ⁇ shaped structure and is stored as a structural frame 18 and used, as this is particularly significant.
  • the respective difference between the structural part image 18 and partial images 20 is formed.
  • the partial images 20 are shifted starting from the position of the structural partial image 18 in the direction of flow-that is, "pushed through” according to the figure from left to right. That part image 20, which results in the lowest contrast difference, is that which the position of the structure 13 at time t 2 in Figure 19 as ⁇ der committee, namely sub-image 21 in FIG. 11th
  • the speed of the structure 13 can be determined.
  • This algorithm for finding and retrieving a significant structure may be used to increase accuracy Variety of structural part images obtained from different projection images are repeated. It is then simply the average over several individual result values formed.
  • the presented embodiments are of a radiation source in each case two mutually - preferably in ⁇ flow direction - spaced detectors positioned to be irradiated jointly by this radiation source.
  • the detectors are spatially resolving, at least projections of the multiphase mixture are recorded. The detection takes place at certain times.
  • the collected data is stored associated with the acquisition times.
  • the acquired data of the first detector are compared with data of the second detector acquired at different times. If the data match the captured data associated timing information is read out and a time difference is formed therefrom and placed in relation to the Ab ⁇ stand of the detectors, so that therefrom the Geschwin ⁇ speed can be derived.
  • the detected patterns are a spatial or saudimensi ⁇ onale distribution of fluid components.
  • Temporal pattern of a histories De ⁇ tektors over time are, however not been studied.

Abstract

L'invention concerne un dispositif et un procédé de mesure de la vitesse d'un fluide multiphase (1) traversant un tube dans un sens d'écoulement prédéfini (v), comportant une source de rayonnement (3) disposée en dehors du tube, qui émet un rayonnement photonique (4) dirigé sur le fluide multiphase (1), une unité de détection (5, 6) placée en-dehors du tube, permettant d'enregistrer le rayonnement photonique (3) en un premier point de mesure (Ml) et en un second point de mesure (M2) après qu'il a traversé le fluide multiphase (1), le premier point de mesure (M1) et le deuxième point de mesure (M2) étant situés à une distance (a) l'un de l'autre, pouvant être prédéfinie, par rapport au sens de l'écoulement (2), un dispositif d'évaluation (7) permettant de déterminer respectivement une structure interne (13) du fluide multiphase (1) à un premier moment par reconnaissance de formes à partir du rayonnement photonique (4) enregistré par l'unité de détection (5) au premier point de mesure (M1) et du rayonnement photonique (4) enregistré par l'unité de détection (6) au second point de mesure (M2), et de déterminer la vitesse (v) du fluide multiphase (1) à partir de la structure interne de fluide (13) constatée au second point de mesure (M2) à un deuxième moment. Un tel dispositif ou un tel procédé permet de mesurer la vitesse (v) du fluide multiphase (1) avec une plus grande précision.
PCT/EP2010/068616 2010-12-01 2010-12-01 Dispositif et procédé de mesure de la vitesse d'un fluide multiphase WO2012072126A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/068616 WO2012072126A1 (fr) 2010-12-01 2010-12-01 Dispositif et procédé de mesure de la vitesse d'un fluide multiphase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/068616 WO2012072126A1 (fr) 2010-12-01 2010-12-01 Dispositif et procédé de mesure de la vitesse d'un fluide multiphase

Publications (1)

Publication Number Publication Date
WO2012072126A1 true WO2012072126A1 (fr) 2012-06-07

Family

ID=44352408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/068616 WO2012072126A1 (fr) 2010-12-01 2010-12-01 Dispositif et procédé de mesure de la vitesse d'un fluide multiphase

Country Status (1)

Country Link
WO (1) WO2012072126A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1578048A (en) * 1976-11-20 1980-10-29 Kernenergieverwert Ges Fuer Method and apparatus for determining particle speeds in delivery flows
US4884457A (en) 1987-09-30 1989-12-05 Texaco Inc. Means and method for monitoring the flow of a multi-phase petroleum stream
EP0420109A1 (fr) * 1989-09-25 1991-04-03 Europäische Atomgemeinschaft (Euratom) Procédé et dispositif de mesure de débit massique dans un canal ou plusieurs phases sont en écoulement
US5654551A (en) 1992-05-22 1997-08-05 Commonwealth Scientific And Industrial Research Organisation Method and apparatus for the measurement of the mass flow rates of fluid components in a multiphase slug flow
US6097786A (en) 1998-05-18 2000-08-01 Schlumberger Technology Corporation Method and apparatus for measuring multiphase flows
GB2356453A (en) * 1999-09-14 2001-05-23 Agency Ind Science Techn X-ray tomography device for use in high resolution profiling and velocity measurement
US6265713B1 (en) 1997-05-30 2001-07-24 Schlumberger Technology Corporation Measurement flow section for oil well effluents and system including such a section
WO2004097344A2 (fr) * 2003-04-25 2004-11-11 Cxr Limited Surveillance par rayons x
WO2011005133A1 (fr) * 2009-07-07 2011-01-13 Siemens Aktiengesellschaft Appareil et procédé pour mesurer l'écoulement de fluides de plusieurs phases

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1578048A (en) * 1976-11-20 1980-10-29 Kernenergieverwert Ges Fuer Method and apparatus for determining particle speeds in delivery flows
US4884457A (en) 1987-09-30 1989-12-05 Texaco Inc. Means and method for monitoring the flow of a multi-phase petroleum stream
EP0420109A1 (fr) * 1989-09-25 1991-04-03 Europäische Atomgemeinschaft (Euratom) Procédé et dispositif de mesure de débit massique dans un canal ou plusieurs phases sont en écoulement
US5654551A (en) 1992-05-22 1997-08-05 Commonwealth Scientific And Industrial Research Organisation Method and apparatus for the measurement of the mass flow rates of fluid components in a multiphase slug flow
US6265713B1 (en) 1997-05-30 2001-07-24 Schlumberger Technology Corporation Measurement flow section for oil well effluents and system including such a section
US6097786A (en) 1998-05-18 2000-08-01 Schlumberger Technology Corporation Method and apparatus for measuring multiphase flows
GB2356453A (en) * 1999-09-14 2001-05-23 Agency Ind Science Techn X-ray tomography device for use in high resolution profiling and velocity measurement
WO2004097344A2 (fr) * 2003-04-25 2004-11-11 Cxr Limited Surveillance par rayons x
WO2011005133A1 (fr) * 2009-07-07 2011-01-13 Siemens Aktiengesellschaft Appareil et procédé pour mesurer l'écoulement de fluides de plusieurs phases

Similar Documents

Publication Publication Date Title
DE102009028104B4 (de) Bildrekonstruktionsverfahren für energiereiches Doppelenergie-CT-System
CN101592579B (zh) 利用多视角x射线对行李爆炸物进行自动探测的方法及装置
DE102011004598B4 (de) Verfahren und Computersystem zur Streustrahlkorrektur in einem Multi-Source-CT
DE3145046A1 (de) "verfahren und einrichtung zum erzeugen einer darstellung einer stroemungsmittelstroemung innerhalb eines hohlkoerpers"
DE102008018269A1 (de) Vorrichtung und Verfahren zur rotationsfreien Computertomographie
EP2072972B1 (fr) Dispositif de mesure du mouvement d'un fluide dans un tuyau
DE102013108367A1 (de) Vorrichtung und Verfahren zur Aufnahme von Durchstrahlungsbildern bei einer Computertomografie
CN201514387U (zh) 利用多视角x射线对行李中爆炸物进行自动探测的系统
DE102012112121B4 (de) Verfahren und Vorrichtung zur zerstörungsfreien Prüfung eines rotationssymmetrischen Werkstücks, welches Abschnitte verschiedener Durchmesser aufweist
DE102005024892B3 (de) Gantry zur Aufnahme einer Röntgenquelle und Verfahren zur Überprüfung eines Prüfteils mittels Röntgenstrahlung
DE602005002348T2 (de) Verfahren zur messung von teilcheneigenschaften mittels interferenzstreifenanalyse und entsprechende vorrichtung
DE102013018386A1 (de) Verfahren und Vorrichtung zur Bestimmung der Geschwindigkeit eines Mediums
AT516846B1 (de) Vorrichtung und Verfahren zur Zählung und/oder Messung von Partikeln in einem Fluidstrom
DE102006028452A1 (de) Prüfkörper zur Einmessung und Überprüfung von dimensionellen Tomographie-Messgeräten
EP1039289A2 (fr) Procédé et dispositif pour déterminer la vitesse et la taille des particules
WO2009018597A1 (fr) Dispositif de détermination de paramètres d'écoulement pour un écoulement particules-fluide
DE2650023B2 (de) Vorrichtung zum Aufweiten von nahezu parallen Lichtbündeln
EP2636019B1 (fr) Procédé et dispositif d'évaluation servant à déterminer la position d'une structure se trouvant dans un objet à examiner au moyen d'une tomographie aux rayons x assistée par ordinateur
DE102014211514A1 (de) Verfahren zur Bestimmung des Durchsatzes, des Volumenstromes und des Massenstromes von Teilchen
WO2012072126A1 (fr) Dispositif et procédé de mesure de la vitesse d'un fluide multiphase
WO2020164812A1 (fr) Procédé de reconstruction d'une représentation numérique de caractéristiques d'objet d'un objet d'inspection dans l'espace local d'un système à rayons x
WO2017037248A1 (fr) Procédé de mesure par filtre spatial et dispositif de mesure par filtre spatial
EP2948749B1 (fr) Procédé d'étalonnage d'une installation de vérification à rayons x pour un type de pneu ainsi que procédé pour la vérification de la position de câbles dans un pneu
DE102009042047A1 (de) Vorrichtung und Verfahren zum Messen der Geschwindigkeit eines mehrphasigen Fluids
DE3339661A1 (de) Verfahren zur positionsbestimmung einer pruefsonde

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10795644

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10795644

Country of ref document: EP

Kind code of ref document: A1