WO2019091640A1 - Appareil de mesure de niveau de remplissage à base de radar - Google Patents

Appareil de mesure de niveau de remplissage à base de radar Download PDF

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Publication number
WO2019091640A1
WO2019091640A1 PCT/EP2018/075049 EP2018075049W WO2019091640A1 WO 2019091640 A1 WO2019091640 A1 WO 2019091640A1 EP 2018075049 W EP2018075049 W EP 2018075049W WO 2019091640 A1 WO2019091640 A1 WO 2019091640A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
level gauge
designed
lid
level
Prior art date
Application number
PCT/EP2018/075049
Other languages
German (de)
English (en)
Inventor
Klaus Pankratz
Daniel Müller
Carmen Roser
Original Assignee
Endress+Hauser SE+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 Endress+Hauser SE+Co. KG filed Critical Endress+Hauser SE+Co. KG
Publication of WO2019091640A1 publication Critical patent/WO2019091640A1/fr

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/225—Supports; Mounting means by structural association with other equipment or articles used in level-measurement devices, e.g. for level gauge measurement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H01Q1/405—Radome integrated radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
    • H01Q19/062—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for focusing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness

Definitions

  • the invention relates to a radar-based level gauge for attachment to a container with a round terminal, such as a flange, clamp or screw.
  • Conductivity meters or comparable devices are used. They record the corresponding process variables, such as level, flow, pressure, temperature, pH, redox potential or conductivity.
  • process variables such as level, flow, pressure, temperature, pH, redox potential or conductivity.
  • Various types of such field device types is manufactured and distributed by the company Endress + Hauser.
  • container is also understood to mean unfilled containers, such as basins, lakes or flowing waters
  • Measuring method consists in the ability to measure the level virtually continuously. In the field of continuous level measurement, radar-based measuring methods are therefore predominantly used (in the context of this patent application, "radar" is defined as signals or
  • pulse-transit time principle also known by the term “pulse radar”
  • FMCW principle Frequency Modulated Continuous Wafe
  • Level gauges are usually housed in universal field device enclosures designed for the requirements of a wide range of field device types. Accordingly, the housings are designed to meet the widest possible requirements. These concern in particular the Electromagnetic compatibility (“EMC”), explosion safety (as defined, for example, in the EN 60079 series), corrosion resistance or impact resistance, as well as multiple interfaces such as displays, keyboards or various cable connections for field devices is shown for example in International Publication WO 2014037256 A1.
  • EMC Electromagnetic compatibility
  • explosion safety as defined, for example, in the EN 60079 series
  • corrosion resistance or impact resistance as well as multiple interfaces such as displays, keyboards or various cable connections for field devices is shown for example in International Publication WO 2014037256 A1.
  • the invention solves this problem by a radar-based
  • the fill level measuring device comprises:
  • the cover is designed so that in the attached state, at least one contact surface of the lid connects to the end contour of the round terminal, wherein the cover in relation to
  • Contact surface has a maximum height of 60 mm
  • An arranged in the lid transmitting / receiving unit which is designed to emit radar-based transmission signals in the direction of the contents and to determine the level of a filling material located in the container after reflection on the Gregutober Assembly based on corresponding received signals.
  • the level measuring device according to the invention can thus be used for applications that require a flat structure of the level gauge, especially with regard to the installation height above the container. This applies, for example Level measurement on a housing opening of a square IBC tank, which still has to be stackable despite an attached level gauge. Notwithstanding this, based on the level measuring device according to the invention, an overpressure-proof closure of the
  • Round terminal can be achieved, since the lid can be designed, for example, according to the dimensions of a blind flange.
  • the lid can potentially be designed to seal the interior of the container at least according to the nominal pressure level PN 2.5 overpressure resistant.
  • transmitting / receiving unit for the level measuring device according to the invention it is particularly suitable if the transmitting / receiving unit is designed to transmit signals with a frequency of at least 75 GHz
  • the transceiver unit can be designed very compact, since corresponding electronic components at such frequencies (and possibly also the reception of corresponding
  • Received signals based on a semiconductor integrated circuit can be realized.
  • a higher absolute bandwidth can be used at higher frequencies. This in turn achieves a higher resolution or accuracy of the level measurement.
  • Bundling of at least the transmission signals includes. This can be dispensed with space-consuming (horn) antennas.
  • the term "quasi-optical lens” is analogous to optical lenses to materials with which electromagnetic waves in the radar spectral range [0.3 to 300 GHz] are refracted, and by means of which a defined one is formed with appropriate shaping Bundling or
  • the fill level measuring device according to the invention can be designed in this way be that it can be attached to a round terminal with an inner diameter of not more than 200 mm, in particular less than 65 mm. Particularly advantageous is the attachment to a round terminal with a
  • the lid can be attached to different types of
  • Flange connections screwed connections or clamped connections (better known under the English term “clamp connection”, such as Tri-Clamp®), in which connection the fastening means of the cover must be designed as a flange in order to connect the level gauge to a
  • the fastening means In order to fix the level gauge to a corresponding screw connection of the container, the fastening means must be designed accordingly as internal thread or external thread.
  • Circular connections generally to that surface or planar contour of the round terminal facing (with respect to the imaginary axis of the round terminal) the container outer side. Accordingly, in the case of a flange or clamp connection, the end contour of the flange face of the container-side flange faces the cover-side flange. If the round connection as
  • Screw terminal is realized, it is in the final contour again that planar contour of the round terminal, which acts when completely screwing the lid as its end stop.
  • An advantageous implementation of the invention is to couple the dimension of the height of the lid (taking into account the maximum height of 60 mm) to the inner diameter of the round terminal.
  • a possible coupling may depend on the type of round connection.
  • the height can be adjusted to the inner diameter of the flange according to EN 1092-01 / 01 A for flange connections
  • Flange can be coupled.
  • Table represents one Excerpt from the standard and illustrates the local coupling of the (flange) height to the flange inner diameter:
  • the lid according to the invention can also be designed in any other coupled dimension from inner diameter to height, which is shown in this standard.
  • the coupled dimension applies
  • FIG. 1 shows a schematic representation of the arrangement of radar-based level measuring devices on a container
  • Fig. 2 a first embodiment of the invention
  • Fig. 4 a third embodiment of the invention
  • Fig. 1 For a general understanding of the invention in Fig. 1 is a typical
  • the level gauge 1 in a known Installation height h above the contents 3 attached to the container 2.
  • the container 2 can be more than 100 m high.
  • the transmission signal SHF may be radar pulses emitted periodically, so that the distance and thus the fill level L are determined directly on the basis of the pulse transit time between transmission of the pulse-shaped transmission signal SHF and reception of the pulse-shaped reception signal EHF can be.
  • the transmission signal SHF is a continuous radar signal, but with a time-modulated frequency. Accordingly, the runtime, and hence the distance or level L, in implementing the FMCW method may be based on the instantaneous frequency difference between the currently received
  • Receive signal EHF and the same time transmitted transmit signal SHF are determined.
  • the level gauge 1 via an interface, such as
  • PROFIBUS "HART” or “Wireless HART” connected to a higher-level unit 4, such as a process control system
  • Level value L to be transmitted for example, to control if necessary on the container 2 inflows or outflows.
  • other information about the general operating state of the level measuring device 1 can also be communicated.
  • the level gauge 1 shown in Fig. 1 is housed in a housing 11 typical for field devices. Due to the universal design of the housing 1 1 * for a variety of field device types, it therefore has comparatively massive dimensions. For this reason, the housing protrudes 1 1 * in practice at least 30 cm beyond the flange 21 of the container 2 addition. The corresponding space above the container 2 is to be kept free at the place of use for the level gauge 1. For certain
  • the level gauge 1 according to the invention is
  • Container 2 arranged in the same manner as is done in the prior art.
  • the level measuring device 1 in the form of a lid 1 1 is designed, which closes the round terminal 21, 21 'of the container 2, optionally overpressure. It is characteristic here that the cover 1 1 is dimensioned with a maximum height Wmax of 60 mm in relation to that contact surface of the cover 11, which rests in the fastened state on the corresponding end contour 210 of the round terminal 21, 21 ' . If the round connection is designed as a flange connection 21 (FIG. 2), the end contour 210 corresponds to the planar flange surface of FIG. 2 (FIG. 2)
  • the level gauge 1 for example, the shape of a
  • blind flange are modeled.
  • the lid 11 is made of a material suitable for this purpose, such as, for example, stainless steel.
  • the integration of the transmitting / receiving unit 12 within the lid 1 1 is favored by the fact that the transmitting / receiving unit 12 is designed to transmit the radar-based transmission signals SHF with a frequency of 75 GHz or higher.
  • the transceiver unit 12 can be dimensioned very small in this case, since the RF generation at such frequencies (and possibly also the reception
  • the lid 1 1 are designed with a quasi-optical lens 1 11, by means of the desired bundling of the transmission signal SHF gen contents 3 (as well as the bundling of the received signal EHF gene transmitting / receiving unit 12) due to the bidirectional mode of action is set.
  • PTFE for example, can be used for this purpose.
  • a reduced dimension of the height Wmax can also be achieved when wired to power or wired
  • Communication of the transmitting / receiving unit 12 is omitted. This can be compensated, for example, by integration of a radio module, for example according to the WLAN standard.
  • the power supply can be done, for example.
  • a rechargeable battery wherein for reloading an inductive coupling can be provided.
  • Fig. 3 illustrates that the erfindungsgenzeße level gauge 1 not only compatible with a flange 21 (or a structurally
  • the lid 11 includes an external thread 110', which corresponds to an internal thread on the container. 2
  • the lid 1 1 is designed so that it over the internal thread and thus over the
  • Level gauge 1 to be attached to a union fitting for food and chemicals according to DIN standard 11851.
  • the level gauge 1 could be used in this embodiment to an IBC tank, as IBC tanks on the top of the container 2 have a corresponding opening with an external thread.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

L'invention concerne un appareil de mesure de niveau de remplissage à base de radar pour la fixation à un récipient (2) avec un raccord rond (21, 21'), le raccord rond (21, 21') présentant un contour d'extrémité (210) prédéfini. À cet effet, l'appareil de mesure de niveau de remplissage (1) comprend un couvercle (11) pourvu d'un moyen de fixation (110, 110') au moyen duquel le couvercle (1) peut être fixé au récipient (2). Le couvercle (11) est réalisé à cet effet de telle sorte qu'au moins une surface de contact du couvercle (11) est raccordée au contour d'extrémité (210) à l'état fixé. Une unité émettrice-réceptrice (12) est agencée dans le couvercle (11) pour la mesure du niveau de remplissage, pour émettre des signaux d'émission (SHF) à base de radar en direction du produit de remplissage (3) et pour déterminer à l'aide des signaux de réception (EHF) le niveau de remplissage (L) du produit de remplissage (3) dans le récipient (2). Selon l'invention, le couvercle (11) présente une hauteur (Wmax) de 60 mm au maximum par rapport à sa surface de contact. Le couvercle (11) peut ainsi être conçu par exemple selon les dimensions d'une bride pleine pour des raccords de brides (21). L'appareil de mesure de niveau de remplissage (1) peut alors être monté sur le récipient (2) sans prendre de place.
PCT/EP2018/075049 2017-11-08 2018-09-17 Appareil de mesure de niveau de remplissage à base de radar WO2019091640A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017126127.3 2017-11-08
DE102017126127.3A DE102017126127A1 (de) 2017-11-08 2017-11-08 Radarbasiertes Füllstandsmessgerät

Publications (1)

Publication Number Publication Date
WO2019091640A1 true WO2019091640A1 (fr) 2019-05-16

Family

ID=63637896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/075049 WO2019091640A1 (fr) 2017-11-08 2018-09-17 Appareil de mesure de niveau de remplissage à base de radar

Country Status (2)

Country Link
DE (1) DE102017126127A1 (fr)
WO (1) WO2019091640A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020025744A1 (fr) * 2018-08-02 2020-02-06 Vega Grieshaber Kg Capteur radar destiné à la détection d'objets
RU2777143C1 (ru) * 2018-08-02 2022-08-01 Фега Грисхабер Кг Радарный датчик для обнаружения объектов

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019211326A1 (de) * 2019-07-30 2021-02-04 Vega Grieshaber Kg Manipulationssicherer Sensor für einen Behälter
EP4361579A1 (fr) * 2022-10-28 2024-05-01 Biotage AB Agencement de capteur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112005002578T5 (de) * 2004-11-24 2007-10-25 Rosemount Tank Radar Ab Antennenvorrichtung zur Füllstandsmessung
DE102011112045A1 (de) * 2011-09-01 2013-03-07 Krohne Messtechnik Gmbh Mikrowellensendegerät mit Verguss
WO2014037256A1 (fr) 2012-09-10 2014-03-13 Endress+Hauser Flowtec Ag Appareil électronique comprenant un boîtier destiné à recevoir des composants électroniques, de préférence un émetteur de processus
EP3159663A1 (fr) * 2002-04-10 2017-04-26 VEGA Grieshaber KG Dispositif de mesure de niveau ayant l'équipement électronique et une antenne dans un boîtier étanche

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241401A1 (de) * 2002-09-06 2004-03-18 Vega Grieshaber Kg Behälter- oder Flanschdeckel
FR2897683B3 (fr) * 2006-02-17 2008-04-18 Tanguy Herbert Systeme electronique de detection/alarme sans fil,permettant la surveillance du niveau d'un liquide contenu dans un reservoir ou une citerne
US8091579B2 (en) * 2006-04-27 2012-01-10 Hugh Corum Sintes Level sensor
DE102007057211A1 (de) * 2007-11-26 2009-05-28 Martin Meyer Verschluss mit Füllstandssensor
US10247596B2 (en) * 2016-01-28 2019-04-02 Endress+Hauser SE+Co. KG Level measurement device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3159663A1 (fr) * 2002-04-10 2017-04-26 VEGA Grieshaber KG Dispositif de mesure de niveau ayant l'équipement électronique et une antenne dans un boîtier étanche
DE112005002578T5 (de) * 2004-11-24 2007-10-25 Rosemount Tank Radar Ab Antennenvorrichtung zur Füllstandsmessung
DE102011112045A1 (de) * 2011-09-01 2013-03-07 Krohne Messtechnik Gmbh Mikrowellensendegerät mit Verguss
WO2014037256A1 (fr) 2012-09-10 2014-03-13 Endress+Hauser Flowtec Ag Appareil électronique comprenant un boîtier destiné à recevoir des composants électroniques, de préférence un émetteur de processus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020025744A1 (fr) * 2018-08-02 2020-02-06 Vega Grieshaber Kg Capteur radar destiné à la détection d'objets
RU2777143C1 (ru) * 2018-08-02 2022-08-01 Фега Грисхабер Кг Радарный датчик для обнаружения объектов
US11774277B2 (en) 2018-08-02 2023-10-03 Vega Grieshaber Kg Radar sensor for object detection

Also Published As

Publication number Publication date
DE102017126127A1 (de) 2019-05-09

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