EP3884247A1 - Sonde de mesure permettant de déterminer ou de surveiller une grandeur de processus physique ou chimique d'un milieu - Google Patents

Sonde de mesure permettant de déterminer ou de surveiller une grandeur de processus physique ou chimique d'un milieu

Info

Publication number
EP3884247A1
EP3884247A1 EP19797699.6A EP19797699A EP3884247A1 EP 3884247 A1 EP3884247 A1 EP 3884247A1 EP 19797699 A EP19797699 A EP 19797699A EP 3884247 A1 EP3884247 A1 EP 3884247A1
Authority
EP
European Patent Office
Prior art keywords
measuring probe
outer contour
adapter
measuring
probe according
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.)
Withdrawn
Application number
EP19797699.6A
Other languages
German (de)
English (en)
Inventor
Dirk Osswald
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 SE and Co KG
Original Assignee
Endress and Hauser SE and 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 and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of EP3884247A1 publication Critical patent/EP3884247A1/fr
Withdrawn legal-status Critical Current

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
    • 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

Definitions

  • Measuring probe for determining or monitoring a physical or chemical process variable of a medium
  • the invention relates to a measuring probe for determining or monitoring a physical or chemical process variable of a medium that is located in a container.
  • the container can be a tank, a pipe, or the like. act.
  • level measuring devices For example, level measuring devices, flow measuring devices, pressure and pressure sensors are used to record process variables in automation technology
  • Temperature measuring devices, analysis measuring devices, etc. The measuring devices record the corresponding process variables level, flow, pressure,
  • Measuring devices essentially consist of a measuring probe, with at least one sensor element or a measuring element that supplies information about the process variable, and at least one electronic unit that controls the sensor element, processes and / or evaluates the information supplied by the sensor element / measuring probe and measures values the process variable.
  • Measuring devices are often used in an industrial environment in a process environment, the temperature of which is above the maximum permissible temperature of temperature-sensitive components or temperature-sensitive components of the electronic unit, the so-called transmitter.
  • a connecting component is provided between the measuring probe that is exposed to the process and the electronic unit with the at least one temperature-sensitive component, the thermal component of which
  • a corresponding device for determining the The filling level of a filling material in a container has become known, for example, from DE 10 2012 103 493 A1.
  • measuring instruments are used in the chemical or pharmaceutical industry, but also in the
  • Food sector e.g. are often subject to rapid temperature changes in succession due to cleaning processes. As a result of rapid temperature changes, high temperatures occur at least for a short time
  • the thermally decoupling connection component from a material which has the properties of metal with regard to stability and conductivity.
  • the usually high thermal conductivity of metals runs counter to the desired thermal decoupling in principle. It is conceivable to achieve a high thermal resistance and thus good thermal decoupling by adapting the geometry of the connection component.
  • a desired high thermal resistance can be achieved by a suitable cross-sectional reduction and / or a suitable increase in the length of the connecting component.
  • Design of a measuring device can be achieved if a connection component with increased longitudinal expansion is used for thermal decoupling. It is also not possible to reduce the cross-section arbitrarily, since below a predetermined cross-section of the connection component, the stability required at the industrial location of the measuring device is no longer guaranteed.
  • the invention has for its object a compact measuring probe for determining a physical or chemical process variable in the To propose automation technology that is suitable for temperature reduction.
  • the task is solved by a measuring probe for determination or
  • Housing component is provided for receiving at least one measuring element sensitive to the process variable, a process adapter being provided in an end region of the tubular housing component, which can be screwed into a process connection part of the container by means of a screw thread, a housing adapter for fastening the measuring electronics housing in the opposite end region of the tubular housing is provided, wherein in an intermediate area between the
  • tubular component has a defined outer contour, which is designed such that a torque can be introduced onto the tubular component via the defined outer contour for the purpose of screwing the process adapter in or unscrewing the process adapter from the process connection part of the container, and wherein the outer contour is preferably parallel over the entire circumference arranged cooling fins are introduced.
  • the housing area provided and used for screwing the measuring probe in and out is additionally provided with cooling fins. These cooling fins are designed and dimensioned in such a way that neither the stability of the measuring probe nor the functionality of the housing area provided for the screwing in and unscrewing process is impaired.
  • a compact measuring probe is provided which additionally also fulfills the function of a temperature difference between the
  • the defined outer contour is preferably designed as an n-square drive, preferably as a hexagonal drive.
  • the defined outer contour has an essentially round cross section.
  • at least one radial bore is provided in the region of the defined outer contour, via which a torque can be transmitted to the measuring probe by means of a suitable tool.
  • the cooling fins are generated by grooves made in the defined outer contour. These preferably run over the entire circumference of the defined outer contour.
  • the penetration depth of the individual grooves depends on the defined outer contour: While the penetration depth is the same for an outer contour with a substantially round cross-section over the circumference, it can be different for an angular outer contour over the circumference. Here, the penetration depth is greater in the area of the edges than in the area of the straight surfaces. In any case, it must be ensured that the penetration depth in the area of the greatest reduction of the
  • a groove between two adjacent cooling fins preferably has a semicircular or a rectangular, trapezoidal or triangular cross section with preferably rounded corners.
  • the distance between two adjacent cooling fins is preferably in the range between 1-2mm.
  • the grooves for creating the cooling fins are preferably introduced into the outer contour by means of a lathe and a plunge steel.
  • the tubular housing component is manufactured as a cast part, the cooling fins and grooves may be already shown in the tool.
  • the measuring probe is preferably made of stainless steel.
  • Other suitable materials are e.g. Aluminum, mild steel, alloy or titanium. The invention is explained in more detail with reference to the following figures. It shows:
  • FIG. 1a a longitudinal section through the measuring probe shown in FIG. 1 according to the identification A-A,
  • FIG. 1 b a cross section through the measuring probe shown in FIG. 1 according to the identification B-B,
  • FIG. 1 c a perspective view of the measuring probe shown in FIG. 1,
  • Fig. 2 a measuring probe according to the invention with 3 A "process thread in
  • FIG. 2a a cross section through the measuring probe shown in FIG. 2 according to the identification A-A
  • FIG. 2b a longitudinal section through the measuring probe shown in FIG. 2 according to the identification B-B
  • Fig. 2c a perspective view of the measuring probe shown in Fig. 2 and 3: a schematic representation of a measuring device which is attached to a container by means of the measuring probe according to the invention.
  • FIG. 1 shows a measuring probe 1 according to the invention - here with
  • the measuring probe 1 has a tubular housing component 4 for receiving at least one measuring element 5 that is sensitive to the process variable.
  • the measuring element is not shown separately in FIG. 1. As already mentioned above, it is designed so that it contains information about the one to be determined or monitored
  • Process variable delivers. 3, for example, a radar
  • the measuring element 5 here is the antenna that transmits and receives the measurement signals.
  • the measuring element 5 is a conductive elongate probe which extends into the container 2.
  • the tubular one is in an end region
  • Housing component 4 a process adapter 6 is provided, which via a screw thread 7 in a corresponding thread
  • Process connector 8 of the container 2 can be screwed.
  • the process connection part 8 can be located in an opening 13 in the lid 14 of the container 2.
  • the process connection part 8 can also be arranged in the side wall of the container 2. This is usually the case with pressure measuring devices or point level measuring devices.
  • a housing adapter 9 is provided for fastening the measuring electronics housing 10.
  • a screw connection is usually also provided here.
  • the connection for receiving the measuring electronics housing 10 can also be designed as a welded connection, with or without
  • Screw thread can also be a plugged connection, e.g. is secured with a locking ring.
  • connection techniques mentioned can also be combined with one another.
  • the process adapter 6 and the housing adapter 9 have a defined outer contour 11 on the outer wall of the tubular component 4. These The outer contour 11 is designed such that a torque can be introduced onto the tubular component 4 for the purpose of screwing the process adapter 6 into or unscrewing the process adapter 6 from the process connection part 8 of the container 2.
  • the cross section of the tubular component is reduced in the region of the defined outer contour by the grooves 15.
  • the grooves 15 or cooling fins 12 prevent the temperature prevailing in the container 2 from becoming unrestricted
  • Measuring probe 1 in the intermediate area to increase the thermal resistance and thus to a temperature drop of a few degrees Celsius.
  • the longitudinal section from FIG. 1 a and the cross section from FIG. 1 b show the penetration depth t of the grooves 15 between the cooling fins 12 and the distance a between two adjacent cooling fins 12. Both sizes are dimensioned in such a way that the required and necessary stability of the measuring probe 1 is ensured.
  • the penetration depth t of the grooves 15 can vary over the circumference of the defined outer contour 11.
  • the penetration depth t ends on a circular line with the radius r.
  • the penetration depth t2 in the area of the corners is greater than the penetration depth t1 in the region of the straight sections t1.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne une sonde de mesure (1) permettant de déterminer ou de surveiller une grandeur de processus physique ou chimique d'un milieu (2) qui se trouve dans un récipient (3), comportant un composant tubulaire (4) de boîtier logeant au moins un élément de mesure (5) sensible à la grandeur de processus, un adaptateur de processus (6) placé dans une partie d'extrémité du composant tubulaire (4) de boîtier et pouvant être vissé par un filetage (7) dans un élément (8) de raccordement de processus du récipient (2), et un adaptateur de boîtier (9) placé dans la partie d'extrémité opposée du composant tubulaire (4) de boîtier et servant à la fixation du boîtier électronique de mesure (10). La paroi extérieure du composant tubulaire (4) présente dans une zone intermédiaire entre l'adaptateur de processus (6) et l'adaptateur de boîtier (9) un contour extérieur (11) défini qui est conçu de telle manière que, pour le vissage de l'adaptateur de processus (6) dans l'élément de raccordement de processus (8) du récipient (2) ou pour le dévissage de l'adaptateur de processus (6), un couple peut être exercé sur le composant tubulaire (4) par l'intermédiaire du contour extérieur (11) défini, des nervures de refroidissement (12), de préférence agencées parallèlement sur la totalité de la circonférence, étant ménagées dans le contour extérieur (11).
EP19797699.6A 2018-11-21 2019-10-31 Sonde de mesure permettant de déterminer ou de surveiller une grandeur de processus physique ou chimique d'un milieu Withdrawn EP3884247A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018129357.7A DE102018129357A1 (de) 2018-11-21 2018-11-21 Messsonde zur Bestimmung oder Überwachung einer physikalischen oder chemischen Prozessgröße eines Mediums
PCT/EP2019/079877 WO2020104167A1 (fr) 2018-11-21 2019-10-31 Sonde de mesure permettant de déterminer ou de surveiller une grandeur de processus physique ou chimique d'un milieu

Publications (1)

Publication Number Publication Date
EP3884247A1 true EP3884247A1 (fr) 2021-09-29

Family

ID=68426492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19797699.6A Withdrawn EP3884247A1 (fr) 2018-11-21 2019-10-31 Sonde de mesure permettant de déterminer ou de surveiller une grandeur de processus physique ou chimique d'un milieu

Country Status (5)

Country Link
US (1) US20220018701A1 (fr)
EP (1) EP3884247A1 (fr)
CN (1) CN113056656A (fr)
DE (1) DE102018129357A1 (fr)
WO (1) WO2020104167A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021117316A1 (de) * 2021-07-05 2023-01-05 BEDIA Motorentechnik GmbH & Co. KG Sensorvorrichtung zur Erfassung von den Füllstand eines Mediums in einem Behälter beschreibenden Sensorinformationen
DE102021131499A1 (de) * 2021-11-30 2023-06-01 Endress+Hauser SE+Co. KG Füllstandsmessgerät
DE102022108596A1 (de) 2022-04-08 2023-10-12 Vega Grieshaber Kg Sensor für die Prozessmesstechnik, Messanordnung, Prozessanlage und Verfahren zum Betrieb eines Sensors

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2370433A1 (fr) * 2002-02-04 2003-08-04 Graham Fraser Mcgregor Antenne tige filetee
US7075480B2 (en) * 2002-04-10 2006-07-11 Vega Grieshaber Kg Level measurement device having electronics and antenna in one housing
DE10308495A1 (de) * 2003-02-26 2004-09-16 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung des Füllstands eines Mediums in einem Behälter
US7259383B2 (en) * 2004-04-22 2007-08-21 Opti Sensor Systems, Llc Optical transducer for detecting liquid level
DE102005015692A1 (de) * 2004-08-20 2006-02-23 Endress + Hauser Wetzer Gmbh + Co Kg Vorrichtung zur Bestimmung und/oder Überwachung des Massedurchflusses eines Messmediums
WO2011141534A1 (fr) * 2010-05-12 2011-11-17 Ifm Electronic Gmbh Ensemble permettant de relier un appareil de mesure à un récipient contenant le fluide à mesurer
DE102012103493A1 (de) 2012-04-20 2013-10-24 Endress + Hauser Gmbh + Co. Vorrichtung zur Bestimmung des Füllstandes eines Füllguts in einem Behälter
DE102015122177A1 (de) * 2015-12-18 2017-06-22 Endress + Hauser Gmbh + Co. Kg Sensoradapter
CN207147588U (zh) * 2017-09-21 2018-03-27 北京妙思特仪表有限公司 防结晶导波雷达液位计
US11555731B2 (en) * 2017-11-14 2023-01-17 Rochester Sensors, Llc TDR transducer with boomerang waveguide

Also Published As

Publication number Publication date
DE102018129357A1 (de) 2020-05-28
CN113056656A (zh) 2021-06-29
WO2020104167A1 (fr) 2020-05-28
US20220018701A1 (en) 2022-01-20

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