WO2010003983A1 - Dispositif et procédé de détermination d'un volume dans un réservoir d'alimentation - Google Patents

Dispositif et procédé de détermination d'un volume dans un réservoir d'alimentation Download PDF

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Publication number
WO2010003983A1
WO2010003983A1 PCT/EP2009/058680 EP2009058680W WO2010003983A1 WO 2010003983 A1 WO2010003983 A1 WO 2010003983A1 EP 2009058680 W EP2009058680 W EP 2009058680W WO 2010003983 A1 WO2010003983 A1 WO 2010003983A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage
flexible boundary
radiation source
volume
radiation sensor
Prior art date
Application number
PCT/EP2009/058680
Other languages
German (de)
English (en)
Inventor
Christoph Martens
Original Assignee
Mt-Energie Gmbh & Co. Kg
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 Mt-Energie Gmbh & Co. Kg filed Critical Mt-Energie Gmbh & Co. Kg
Publication of WO2010003983A1 publication Critical patent/WO2010003983A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17B—GAS-HOLDERS OF VARIABLE CAPACITY
    • F17B1/00—Gas-holders of variable capacity
    • F17B1/24—Gas-holders of variable capacity of dry type
    • F17B1/26—Gas-holders of variable capacity of dry type with flexible walls, e.g. bellows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet

Definitions

  • the invention relates to a device and a method for determining a storage volume of a storage container, in particular a gas volume of a gas storage, with an at least partially flexible boundary.
  • Such devices and methods are known from AT 501 106 Al, FR 27 66 255 Al and ES 10 52 327 U.
  • non-contact sensors especially ultrasonic sensors, used to determine the Gas Eatyogllstand.
  • the ultrasonic sensors are arranged above the flexible gas storage foil and determine the distance between the sensor and the gas storage foil by means of a transit time measurement of the emitted and reflected signal. From the determined distance conclusions can be drawn on the filling level of the gas storage.
  • the disadvantage here is that the flexible gas storage foil casts wrinkles in a partial filling of the maximum available gas storage, whereby the ultrasonic signals are scattered. This creates the danger that the measurement uncertainty is significantly increased. This can ultimately lead to the fact that no meaningful measurements are feasible.
  • FR 27 66 255 Al and ES 10 52 327 U means that keep the gas storage film in the region of the measuring point as smooth as possible.
  • FR 27 66 255 Al and ES 10 52 327 U use weights mounted centrally on the gas storage foil, which on the one hand provide a smooth surface for the reflection of the ultrasound signals and on the other hand ensure a controlled ascending and descending of the gas storage foil.
  • Gas storage foil can negatively affect this, for example, in which the gas storage film is exposed to higher wear and / or the risk of damage. There is also the risk that with a wrong dimensioning of the weight and / or an incorrect positioning of the weight on the gas storage foil under certain circumstances, a tilting of the weight and thus the measuring surface takes place. As a result, there is a risk of failure of the measurement signal. Furthermore, the weights on the gas storage foil lead to an undesired increase in the pressure in the gas storage. This leads to an increased material load and thus to increased wear and / or the risk of gas leakage.
  • Storage volume detection for a storage container such as for a gas storage a biogas plant.
  • the biogas produced in a biogas plant is usually forwarded to a consumer connected to the biogas plant or to a power generation plant.
  • combined heat and power plants can be used as energy production plants.
  • the performance and effectiveness of a combined heat and power plant or a gas treatment plant depends on the supplied gas volume, which should be supplied as a constant flow as possible.
  • a change in the volume of gas produced means that the consumer is adjusted according to the available gas quantity or the gas production is changed accordingly.
  • the change in the volume of gas produced can be recognized, for example, via the fill level of the storage container.
  • the available gas volume forms the basis for the control process.
  • biogas plants can be used to cover peak loads and / or to stabilize the energy networks.
  • biogas plants can not only serve as base load suppliers for the energy networks due to the storage capacity of the generated energy source, but can also be used in individual or in combination as standard power plants.
  • this requires the most accurate knowledge possible of the available capacities or storage levels.
  • Biogas plants often have a Doppelmembranfolien named or a Tragluftfolienabdeckung with an inner gas storage film and an outer weather protection film.
  • the disadvantage here is that the inner flexible gas storage foil, for example, depending on the level of the storage container may have an irregular surface structure, which complicates the volume detection.
  • the problem underlying the invention is to develop a device and a method of the type mentioned in such a way that the storage volume of the storage container is determined as accurately as possible and with high reliability.
  • this is a device of the type mentioned, in which an optical radiation sensor is provided for at least partially optical measurement of the contour of the flexible boundary. Furthermore, the method according to the invention is characterized in that the measuring method based on a direction finding method and / or a transit time is used to produce a three-dimensional image of the surface contour of the flexible boundary.
  • measuring the contour of the flexible boundary involves detecting a plurality of measuring points on the flexible boundary by means of the optical radiation source and the optical radiation sensor.
  • the measuring points are preferably distributed uniformly over the flexible boundary.
  • the respective measuring point and the optical radiation sensor allows the surface contour of the flexible boundary to be determined very precisely with a high resolution.
  • the storage volume of the storage container can then be determined very accurately.
  • Storage volume is preferably understood to mean the stored and variable volume of a stored medium, in particular gas, between the flexible boundary and the upper edge of the storage container.
  • the optical radiation source and the optical radiation sensor between the top of the flexible boundary and the bottom of a flexible boundary spanning cover is arranged, as a result damage to the device by external influences, such as the weather, largely is avoidable.
  • the optical radiation source may be attached to any other suitable support structure, such as a mast. In both cases, the device can be easily mounted.
  • the radiation source is designed as a laser.
  • the use of a laser as a radiation source for measuring a surface contour is proven and ensures reliable operation.
  • a laser in particular in comparison with an ultrasonic sensor, relatively insensitive to non-planar measuring surfaces or measuring points. Therefore, additional elements, such as weights on the flexible boundary, are not necessary in order to obtain the smoothest possible measurement surface. Thus, stress, increased wear or even the risk of damage to the flexible boundary due to the use of additional elements such as overlying weights is avoided.
  • the radiation source and the radiation sensor form a functional unit, in particular a measuring pivot head.
  • a functional unit in particular a measuring pivot head.
  • the Summary of the radiation source and the radiation sensor in a functional unit allows a compact design that is easy to assemble. For detecting the storage volume, only a single functional unit or measuring unit is needed. This functional unit can sample several measurement points on the flexible boundary. By providing a functional unit, the manufacturing and maintenance costs are significantly reduced.
  • the functional unit may be attached to a mounting platform, wherein preferably the mounting platform is attached to the cover.
  • the mounting platform and / or the functional unit preferably provide a fixed reference point for measuring the contour of the flexible boundary.
  • the functional unit can be constructed in such a way that it can be produced from inexpensive components, in particular has a low weight and / or sufficient positioning accuracy.
  • the radiation source and / or the radiation sensor is pivotable and / or rotatable.
  • a pivotability and / or rotatability of the radiation source and of the radiation sensor, in particular the functional unit, allows a large-area scanning of the surface of the flexible boundary and thus a very accurate determination of the contour, which in turn leads to a precise calculation of the volume of the storage container.
  • the radiation source and / or the radiation sensor by means of actuators, in particular via two axes, pivotable and / or rotatable. Such actuators are proven and ensure long-term and reliable operation.
  • the pivoting and / or rotation over two axes results in a two-dimensional scanning of the flexible boundary which, together with a determination of the distance between the radiation source or the radiation sensor and the flexible boundary, permits the production of an image of the surface contour.
  • the position and / or orientation of the radiation source and / or the radiation sensor can be detected by means of detection means. Due to detecting the position and the orientation of the radiation source and the radiation sensor, each individual measuring point or sampling point of the surface contour can be determined very accurately.
  • the radiation source and / or the optical radiation sensor at the bottom, in particular in the upper third of the cover is arranged.
  • the flexible boundary may be formed as a gas storage sheet, and the flexible cover is preferably formed as a weatherproof sheet. Such gas storage films and weather protection films are proven in connection with biogas plants and ensure a long service life.
  • the signal detected by the radiation sensor is a
  • Evaluation unit can be fed.
  • Such an evaluation unit for example a computer or microprocessor, can take over all control and regulation processes which are necessary for the operation of the device according to the invention. This may include the control of the actuators, the reading and evaluation of the detection means and the measuring means, the control of the radiation source and / or the detection and evaluation of the signals of the radiation sensor.
  • a variable volume between the flexible boundary and the upper edge of the storage container is determined by means of the evaluation unit using the three-dimensional image of the surface contour.
  • the variable volume corresponds to the storage volume.
  • the upwardly open container is terminated by a flexible border which is attached to the top edge of the container.
  • the three-dimensional surface contour of the flexible boundary is determined, whereby, taking into account the known upper edge of the storage container, the variable volume can be calculated. This volume is defined on the one hand by the surface contour of the flexible boundary and on the other hand by the upper edge of the storage tank.
  • biogas plant with an inventive device for determining the volume and / or level of a storage container, in particular a biogas storage.
  • Fig. 1 is a sectional side view of a Biogas storage with a device according to the invention.
  • Fig. 1 shows a sectional side view of a biogas storage 10 with a bottom plate 11.
  • the bottom plate 11 is circular disc-shaped and an annular peripheral side wall 12 is disposed on the bottom plate 11.
  • the bottom plate 11 and the side wall 12 form a circular cylindrical open-topped container, which is covered at the top by means of a flexible boundary 13.
  • the open container may also have another suitable shape.
  • the flexible boundary 13 is formed as a gas storage film 13 and fixed on an upper edge 14 of the side wall 12.
  • Above the flexible boundary 13 is a hood-like, substantially rigid cover 15 is arranged, which rests on the upper edge 14 of the side wall 12 and is fixed.
  • the cover 15 is formed as a weatherproof film 15. in the Vertex of the cover 15, a flange 16 is mounted.
  • a mounting platform 17 is attached on the flange 16 and below the cover 15, a mounting platform 17 is attached.
  • a functional unit 18 is attached.
  • the functional unit 18 has an optical radiation source (not shown) and an optical radiation sensor.
  • the functional unit 18 is pivotable and rotatable by means of actuators, also not shown in more detail, the position and orientation of the functional unit 18 being determined by means of detection.
  • the signals emitted and received by the functional unit 18 for determining the surface contour of the flexible boundary 13 are indicated by dotted radiation signals 19.
  • the functional unit 18 is connected by means of a line 20 to an evaluation unit 21, namely a computer 21.
  • the surface contour of the flexible boundary 13 is scanned by means of the functional unit 18.
  • the functional unit 18 and its integrated optical radiation source as well as the optical radiation sensor are actuated by means of the evaluation unit 21 and the line 20.
  • the signals detected by the radiation sensor of the functional unit 18 are supplied via the line 20 to the evaluation unit 21.
  • a three-dimensional image of the surface contour of the flexible boundary 13 by means of the evaluation unit 21 can be calculated with the signals of the radiation sensor via a measurement method based on transit time. Using this three-dimensional image of the surface contour, a variable volume 23 between the flexible boundary 13 and the fixed and therefore known upper edge 14 can be determined further by means of the evaluation unit 21.
  • the stored gas volume 23 of the biogas storage 10 by means of a single functional unit 18 for detecting the surface contour the flexible boundary 13 and taking into account the fixed container volume determinable.
  • the flexible boundary 13 is designed such that spans at a variable volume 23 equal to zero at the level of the upper edge 14 on the storage container 12.
  • the flexible boundary 13 may also extend into the interior of the biogas storage 10 at a very low level, whereby the volume resulting between the flexible boundary 13 and the upper edge 14 may then be subtracted as a negative volume from the container volume by the remaining container volume to determine.
  • a substrate mirror height within the storage container by means of a measuring means, in particular a microwave sensor, radar sensor or ultrasonic sensor or a hydrostatic pressure determination, be determined.
  • a substrate mirror height in the storage container can be detected very accurately by means of a suitable sensor, whereby, taking into account the known dimensions of the storage container and the substrate mirror height, the actual substrate volume can be calculated.
  • the storage volume for example the gas volume above the substrate level height and below the flexible boundary, can thus be determined in a simple manner.
  • the measuring means is insensitive to contamination, condensation and chemical influences from biogas and / or fermentation substrate.
  • the measuring means can be designed such that a possible foam layer on the fermentation substrate is reliably detected and hidden with respect to the determination of the substrate mirror height or taken into account, for example using a correction factor.
  • the measuring equipment is designed for the longest possible service life and long-term stable measurement.

Abstract

L'invention concerne un dispositif de détermination d'un volume contenu dans un réservoir d'alimentation (10), en particulier d'un volume de gaz contenu dans un réservoir de gaz, présentant un système de limitation au moins partiellement souple (13). En vue d'obtenir une détermination aussi précise et fiable que possible du volume contenu dans le réservoir d'alimentation (10), et de disposer d'un montage simple, le dispositif est caractérisé en ce qu'il présente une source de rayonnement et un capteur de rayonnement optique pour mesurer, au moins partiellement optiquement, le contour dudit système de limitation souple (13).
PCT/EP2009/058680 2008-07-08 2009-07-08 Dispositif et procédé de détermination d'un volume dans un réservoir d'alimentation WO2010003983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810031882 DE102008031882A1 (de) 2008-07-08 2008-07-08 Vorrichtung und Verfahren zum Bestimmen eines Speichervolumens eines Speicherbehälters
DE102008031882.5 2008-07-08

Publications (1)

Publication Number Publication Date
WO2010003983A1 true WO2010003983A1 (fr) 2010-01-14

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Application Number Title Priority Date Filing Date
PCT/EP2009/058680 WO2010003983A1 (fr) 2008-07-08 2009-07-08 Dispositif et procédé de détermination d'un volume dans un réservoir d'alimentation

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Country Link
DE (1) DE102008031882A1 (fr)
WO (1) WO2010003983A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113108699A (zh) * 2021-04-15 2021-07-13 国网宁夏电力有限公司电力科学研究院 基于声光结合检测技术的柔性袋定位方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010005540A1 (de) * 2010-01-23 2011-07-28 hansaconsult Ingenieurgesellschaft mbH, 21465 Vorrichtung und Verfahren zur Füllstandsmessung in einem Tank mit flexiblen Wänden
WO2012107114A1 (fr) 2011-02-09 2012-08-16 Dces Dynamiccomponents Kg Système pour mesurer un niveau de remplissage d'une réserve de gaz
DE102011051135B4 (de) 2011-06-17 2013-10-24 Agraferm Technologies Ag Biogasanlage und Verfahren zum Betreiben einer Biogasanlage
DE102012009640A1 (de) * 2012-05-15 2013-11-21 Hermann Scheck Verfahren zur Optimierung der Energiegewinnung in Biogasanlagen
WO2015003673A1 (fr) 2013-07-09 2015-01-15 Mt-Energie Gmbh & Co. Kg Dispositif et procédé de détermination d'un volume stocké dans un réservoir
EP2832846A3 (fr) * 2013-07-31 2015-04-29 Seitz Electric GmbH Installation de biogaz dotée de transfert gazeux régulé entre des réservoirs de gaz
EP4116678A1 (fr) * 2021-07-05 2023-01-11 Rosemount Tank Radar AB Système et procédé de détermination de niveau de remplissage sans contact non intrusif

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE4339441A1 (de) * 1993-11-19 1995-05-24 Incatronic Phoenix Mestechnik Verfahren zur Messung des Füllgrads von mit Füllgut gefüllten Behältern
FR2766255A1 (fr) * 1997-07-18 1999-01-22 Tech Michel Brochier Sa Dispositif de stockage pour gaz, notamment biogaz
JP2005214654A (ja) * 2004-01-27 2005-08-11 Nishimu Electronics Industries Co Ltd ガスホルダーのピストン監視装置
US6986294B2 (en) * 2000-02-17 2006-01-17 Bintech Lllp Bulk materials management apparatus and method
EP1647760A2 (fr) * 2004-09-29 2006-04-19 Sattler AG Réservoir à gaz avec membrane

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Publication number Priority date Publication date Assignee Title
ES1052327Y (es) 2002-07-04 2003-04-01 Prosec K V M S L Gasometro de membrana mejorado.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339441A1 (de) * 1993-11-19 1995-05-24 Incatronic Phoenix Mestechnik Verfahren zur Messung des Füllgrads von mit Füllgut gefüllten Behältern
FR2766255A1 (fr) * 1997-07-18 1999-01-22 Tech Michel Brochier Sa Dispositif de stockage pour gaz, notamment biogaz
US6986294B2 (en) * 2000-02-17 2006-01-17 Bintech Lllp Bulk materials management apparatus and method
JP2005214654A (ja) * 2004-01-27 2005-08-11 Nishimu Electronics Industries Co Ltd ガスホルダーのピストン監視装置
EP1647760A2 (fr) * 2004-09-29 2006-04-19 Sattler AG Réservoir à gaz avec membrane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113108699A (zh) * 2021-04-15 2021-07-13 国网宁夏电力有限公司电力科学研究院 基于声光结合检测技术的柔性袋定位方法
CN113108699B (zh) * 2021-04-15 2022-04-01 国网宁夏电力有限公司电力科学研究院 基于声光结合检测技术的柔性袋定位方法

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