WO2011083036A2 - Système pour mesurer la viscosité d'un liquide à température régulée et homogène - Google Patents

Système pour mesurer la viscosité d'un liquide à température régulée et homogène Download PDF

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Publication number
WO2011083036A2
WO2011083036A2 PCT/EP2010/070233 EP2010070233W WO2011083036A2 WO 2011083036 A2 WO2011083036 A2 WO 2011083036A2 EP 2010070233 W EP2010070233 W EP 2010070233W WO 2011083036 A2 WO2011083036 A2 WO 2011083036A2
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
liquid
arrangement according
bypass line
viscosity
Prior art date
Application number
PCT/EP2010/070233
Other languages
German (de)
English (en)
Other versions
WO2011083036A3 (fr
Inventor
Torsten KRÜGER
Torsten Hoppe
Original Assignee
Endress+Hauser Meßtechnik 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 Endress+Hauser Meßtechnik GmbH+Co. KG filed Critical Endress+Hauser Meßtechnik GmbH+Co. KG
Publication of WO2011083036A2 publication Critical patent/WO2011083036A2/fr
Publication of WO2011083036A3 publication Critical patent/WO2011083036A3/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/16—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N2011/0006—Calibrating, controlling or cleaning viscometers
    • G01N2011/002—Controlling sample temperature; Thermal cycling during measurement

Definitions

  • the invention relates to an arrangement for measuring the viscosity of a
  • Measurement is tempered with high accuracy.
  • Measurements of liquid viscosities at reference temperatures are used to compare properties and qualities.
  • the viscosity of heavy fuel oil and liquid fuels, such as marine diesel which is measured at a given reference temperature, a quality criterion for the oil delivered by refineries or the diesel fuel.
  • Production process of the desired fuel or other substance must be interrupted by the measurements in the laboratory in order then to adjust the required reference viscosity by automated addition of additives. Furthermore, the substance to be tested, which cools down during transport to the laboratory, must be reheated for each measurement at a reference temperature which is greater than the ambient temperature.
  • liquid also means those substances to be examined which are viscous or even pasty and whose reference viscosity is to be determined.
  • the invention has for its object to provide an arrangement for measuring the viscosity of a uniformly tempered at a predetermined temperature liquid, which can be easily in the industrial or
  • This object is achieved by an arrangement for measuring the viscosity of a uniformly heated to a predetermined temperature liquid, the
  • the tempering device comprises a cooling device and an electrical heating device.
  • the electrical heating device comprises a heating tape on the bypass line between the shut-off valves.
  • the heating tape comprises several sections, each of which can be controlled separately.
  • the electric heating device also comprises at least one Peltier heating element.
  • a cooling coil is provided around the bypass line as a cooling device, wherein water is used as the heat exchange medium.
  • Yet another embodiment of the arrangement according to the invention uses according to a first temperature measuring device one of the preceding claims 2-6, wherein the tempering a first
  • Temperature measuring device in front of the pump and a second
  • Temperature measuring device after the cooling device comprises. Still other embodiments of the inventive arrangement relate to other temperature measuring devices after the Peltier heating element and the measuring tube of the Coriolis flowmeter. In yet another embodiment of the arrangement according to the invention, a pressure measuring device is provided in front of the cooling device.
  • An advantage of the arrangement according to the invention is based on the fact that it allows a high accuracy in the temperature of the liquid to be examined. As part of functional tests, temperature accuracies of ⁇ 0.1 ° C were achieved. Due to the precise temperature control of the liquid and a corresponding control, it is possible to set and use the Coriolis flowmeter used for measuring the viscosity to the desired reference temperature.
  • Another advantage of the arrangement according to the invention is that it can be integrated directly as a bypass module in an industrial process. Accuracies in the temperature of the liquid to be measured which have been achieved so far in experiments are better than comparable values of corresponding ones
  • a liquid, not shown here for simplicity, whose reference viscosity is to be determined, is within a plant by a
  • a bypass line 14 of the inventive arrangement is connected to the transport line 10 by means not shown here flanges or other pipe connections.
  • the bypass line 14 is through
  • the temperature of the liquid inlet 14E of the bypass line 14 is determined with a first temperature measuring device, usefully a temperature sensor 20, which is still in front of a motor-driven pump 18, for a uniform transport of the liquid to be measured by the
  • Measuring section ensures.
  • a positive displacement pump preferably one
  • a pressure measuring device 22 is provided, with which the pressure of the liquid is monitored. If necessary, can - depending on the type of pressure measuring device - be preceded in their supply line a stopcock, which is not shown here for simplicity.
  • a cooling device for the eventual cooling of the liquid in the bypass line 14 is provided.
  • the cooling device comprises a cooling coil 26 as illustrated in the drawing a liquid heat exchange medium, preferably water.
  • a respective check valve 36 and control valve 32 is provided in its inlet 34 and in the outlet 30 of the cooling coil 26 with which the passage of the water can be regulated.
  • the water In order to move the water through the cooling coil 26, it makes sense to provide a pump in the inlet 34 of the cooling device, the
  • the cooling effect of the cooling coil 26 is adjusted by changing the water flow, which can be controlled in particular via the control valve 32 in the outlet 30.
  • the position of the control valve 32 depends on the temperature of the liquid after cooling by the
  • Cooling coil 26 from, in turn, by means of a second
  • Temperature measuring device meaning a temperature sensor 24, is determined. It is located directly after the cooling coil 26. In the drawing, the pendency of the position of the control valve 32 is illustrated by the temperature detected by the temperature sensor 24 by a dashed line.
  • Control valve 32 for controlling the passage of water through the cooling coil 26 is an example of possible embodiments.
  • Liquid leaving the zone of the Peltier heating element 38 is a third temperature-measuring device, preferably a temperature sensor 28. Zur
  • Control of the temperature of the measuring tube of the Coriolis flow meter 40 is a temperature measuring device provided there, preferably also a temperature sensor 42.
  • applied heating power depends on the temperatures measured at the temperature sensors 28 and 42, which is illustrated in the drawing by dashed lines. After using the Coriolis flowmeter 40 the Reference viscosity of the liquid was determined, the liquid is returned through an exit 14A of the bypass line 14 back into the transport line 10.
  • Transport line 10 added in a manner not shown here, additives with which the desired reference viscosity is to be set.
  • a control requires a new run of the inventive arrangement with temperature control and measurement of the liquid as described above.
  • a special feature of the arrangement according to the invention is the electrical heating by a heating tape 44 along the bypass line 14. This results in the ability to hold just thick or even almost pasty liquids over the effective length of the bypass line 14 at a minimum temperature so to obtain the mobility of the liquid to be measured. This is particularly important when the inventive arrangement in an exposed
  • a heating of the bypass line 14 with the heating tape 44 before the actual measurement of the liquid can then serve to bring the arrangement according to the invention and the liquid contained in the bypass line 14 to the desired operating temperature.
  • the heating cable is divided into a plurality of separately controllable sections, so that selected sections of the bypass line 14 can be heated separately.
  • the heating band is divided into three sections, which are illustrated in the drawing by "44a”, "44b” and "44c".
  • the embodiment of the arrangement according to the invention shown in the drawing is based on the assumption that the at the temperature sensor 20th
  • measured temperature of the liquid to be measured is greater or less than the reference temperature at which the viscosity of the liquid in the Coriolis flowmeter 40 is to be determined, and that the reference temperature is greater than the typical ambient temperature. Under these assumptions, it makes sense to arrange the cooling device before heating by the Peltier heating element 38, since the exact temperature of the liquid for the
  • Viscosity measurement via the electric heating element is better realized than cooling by water. For other situations are different
  • Control device connected, as well as all actuators that are to be automatically operated or can.
  • the control device also controls and controls in particular the power supply for the motor of the pump 18, the electrical heating by the heating cable 44 and the Peltier heating element 38 and for the Coriolis flowmeter 40. If the control device is accommodated in a control cabinet, display devices for all temperatures, pressures, flow rates or mass flows measured in the arrangement and the measured viscosities are provided.
  • control device also includes a communication device with a communication interface, with which optionally a bus connection of the arrangement can be made to an industrial plant bus.
  • Transport line 32 control valve (cooling)
  • Temperature measuring device 44a 1. Section heating cable

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Volume Flow (AREA)
  • Control Of Temperature (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

L'invention concerne un système pour mesurer la viscosité d'un liquide thermorégulé qui est amené, pendant la mesure, à une température prédéfinissable de manière homogène et avec une grande précision. Le système comprend à cet effet un conduit de dérivation (14) relié à un conduit de transport (10) et pouvant être obturé par deux soupapes d'arrêt; un dispositif de thermorégulation (26, 38) destiné au liquide et appliqué sur la conduite de dérivation (14), une pompe (18) pour transporter le liquide dans le conduit de dérivation (14); un débitmètre de Coriolis (40) et un dispositif de commande pour surveiller et commander la température d'un tube de mesure du débitmètre de Coriolis (40).
PCT/EP2010/070233 2010-01-08 2010-12-20 Système pour mesurer la viscosité d'un liquide à température régulée et homogène WO2011083036A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010000755.2 2010-01-08
DE102010000755.2A DE102010000755B4 (de) 2010-01-08 2010-01-08 Anordnung zur Messung der Viskosität einer gleichmäßig temperierten Flüssigkeit

Publications (2)

Publication Number Publication Date
WO2011083036A2 true WO2011083036A2 (fr) 2011-07-14
WO2011083036A3 WO2011083036A3 (fr) 2012-06-28

Family

ID=44169225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/070233 WO2011083036A2 (fr) 2010-01-08 2010-12-20 Système pour mesurer la viscosité d'un liquide à température régulée et homogène

Country Status (2)

Country Link
DE (1) DE102010000755B4 (fr)
WO (1) WO2011083036A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3060351B1 (fr) 2013-10-21 2020-03-11 GEA Mechanical Equipment GmbH Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse
EP4030149A1 (fr) * 2021-01-13 2022-07-20 Linde GmbH Système et procédé de détermination d'un écoulement massique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011089601A1 (de) * 2011-12-22 2013-06-27 Endress & Hauser Meßtechnik GmbH & Co. KG Messeinrichtung und Verfahren zur Bestimmung der Konzentration zumindest eines Gases
DE102017115400A1 (de) * 2017-07-10 2019-01-10 Endress + Hauser Messtechnik Gmbh+Co. Kg Messsystem

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US5597949A (en) * 1995-09-07 1997-01-28 Micro Motion, Inc. Viscosimeter calibration system and method of operating the same
JP3283524B2 (ja) * 1996-01-17 2002-05-20 マイクロ・モーション・インコーポレーテッド バイパス型流量計
US5661232A (en) * 1996-03-06 1997-08-26 Micro Motion, Inc. Coriolis viscometer using parallel connected Coriolis mass flowmeters
US5877409A (en) * 1997-06-06 1999-03-02 Mobil Oil Corporation Method and system for determining viscosity index
FR2771817B1 (fr) * 1997-11-28 1999-12-31 Schlumberger Ind Sa Dispositif de mesure de la viscosite d'un fluide
US6196058B1 (en) * 1998-03-12 2001-03-06 Consolidated Papers, Inc. On-line viscosity measurement system
US7437912B2 (en) * 2004-07-19 2008-10-21 Integrated Sensing Systems, Inc. Device and method for sensing rheological properties of a fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3060351B1 (fr) 2013-10-21 2020-03-11 GEA Mechanical Equipment GmbH Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse
EP4030149A1 (fr) * 2021-01-13 2022-07-20 Linde GmbH Système et procédé de détermination d'un écoulement massique

Also Published As

Publication number Publication date
DE102010000755A1 (de) 2011-07-14
DE102010000755B4 (de) 2018-12-13
WO2011083036A3 (fr) 2012-06-28

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