DE29709692U1 - High temperature mass flow meter - Google Patents
High temperature mass flow meterInfo
- Publication number
- DE29709692U1 DE29709692U1 DE29709692U DE29709692U DE29709692U1 DE 29709692 U1 DE29709692 U1 DE 29709692U1 DE 29709692 U DE29709692 U DE 29709692U DE 29709692 U DE29709692 U DE 29709692U DE 29709692 U1 DE29709692 U1 DE 29709692U1
- Authority
- DE
- Germany
- Prior art keywords
- vibrating tube
- sensor base
- measuring
- tube
- heating medium
- 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.)
- Expired - Lifetime
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
- G01F1/76—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
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8413—Coriolis or gyroscopic mass flowmeters constructional details means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments
-
- 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
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8422—Coriolis or gyroscopic mass flowmeters constructional details exciters
-
- 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
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8427—Coriolis or gyroscopic mass flowmeters constructional details detectors
-
- 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
- G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
- G01F1/8468—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits
- G01F1/8472—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having curved measuring conduits, i.e. whereby the measuring conduits' curved center line lies within a plane
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Flowmeters (AREA)
- Measuring Volume Flow (AREA)
Description
-5--5-
BeschreibungDescription
Die Erfindung betrifft eine Vorrichtung zum Messen der Masse eines pumpfähigen durch eine Rohrleitung fließenden Mediums mit Hilfe der Coriolis-Kraft, einen Hochtemperatur Coriolis Masse-Durchflußmesser, wobei ein einziges gebogenes Schwingrohr aus einer Anströmrichtung oder mehreren Anströmrichtungen vom Medium durchströmt und über eine oder mehrere Abströmrichtungen austritt, wobei in berührungsfreier Nähe zum Schwingrohr Heizkörper mit unterschiedlichen Heizmittelanströmrichtungen und Heizmittelabströmrichtungen das im Schwingrohr befindliche Medium zur Vermeidung von Auskristallisierung oder Aushärtung auf einer gewünschten Mindest temperatur halten und wobei die zum Schwingrohrantrieb und zur Meßfunktion eingesetzten Meß-und Antriebsspulen in hochtemperaturresistenter Ausführung zerstörungsfrei austauschbar sind.The invention relates to a device for measuring the mass of a pumpable medium flowing through a pipeline using the Coriolis force, a high-temperature Coriolis mass flow meter, whereby a single curved vibrating tube is flowed through by the medium from one inflow direction or several inflow directions and exits via one or several outflow directions, whereby heating elements with different heating medium inflow directions and heating medium outflow directions in contact-free proximity to the vibrating tube keep the medium in the vibrating tube at a desired minimum temperature to avoid crystallization or hardening, and whereby the measuring and drive coils used for the vibrating tube drive and the measuring function are in a high-temperature-resistant design and can be replaced without causing any damage.
Gemäß dem US-Patent 4,738,143 ist nach dem Stand der Technik
ein Hochtemperatursensor in Doppelrohrtechnik bekannt, dessen Heizsystem aus einem Heizrohr Fig.2, Pos.62 besteht, das in
größerem Abstand zu den Schwingrohren Fig.2, Pos.14/14* gemäß
den in den Schwingrohrxnnenraum hineinragenden Haltern Fig.2, Pos.36 angeordnet ist und von Flüssigkeit hoher
Temperatur durchströmt wird. Weder im Beschreibungsteil noch in den Patentansprüchen sind technische Angaben zu den Heizdaten
bzw. dem Heizmitteleintritt und Heizmittelaustritt ausgeführt.
Der Erfindung liegt die Aufgabe zugrunde, einen HochtemperaturAccording to US patent 4,738,143, a high-temperature sensor using double-tube technology is known in the prior art, the heating system of which consists of a heating tube Fig.2, item 62, which is arranged at a greater distance from the oscillating tubes Fig.2, item 14/14* according to the holders Fig.2, item 36 projecting into the oscillating tube interior and through which high-temperature liquid flows. Neither in the description nor in the patent claims are technical details of the heating data or the heating medium inlet and outlet.
The invention is based on the object of developing a high-temperature
-6--6-
Coriolis Masse-Durchflußmesser der eingangs bezeichneten Art zu schaffen, der die Nachteile nach dem Stand der Technik wie geringe Heizkapazität, geringe Heizkörperabstrahlflächen, große Heizkörperdistanz zu den Schwingrohren, Undefinierte bzw. in einer Heizmitteleintrittsrichtung und Heizmittelaustrittsrichtung festlegte Heizmittelanschlußstellen, nicht zerstörungsfrei austauschbare Meß-und Antriebsspulen und jeweils einen Mediumeintritt bzw. Mediumaustritt ausschließt.To create a Coriolis mass flow meter of the type described above, which eliminates the disadvantages of the state of the art such as low heating capacity, small radiator radiating surfaces, large radiator distance to the oscillating tubes, undefined heating medium connection points or heating medium connection points fixed in a heating medium inlet direction and heating medium outlet direction, measuring and drive coils that cannot be replaced without causing damage, and a medium inlet or medium outlet.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, das ein einziges Schwingrohr mit symetrisch und spiegelbildlich angeordneten Magneten mit seinen parallelen Schwingrohrenden in einen Sensorsockel eingesetzt und verschweißt ist. Der Sensorsockel realisiert die Meßrohrhaltung, dient als Heizungs-und Gehäuseträger und ist mit Durchströmkanälen für Mediumzuführung, Mediumablauf, Heizmittelzulauf und Heizmittelablauf ausgeführt. Die im Sensorsockel befindlichen Prozeßeinschraubgewinde und Heizmittelgewindeanschlüsse ermöglichen eine Zu-und Abführung von Medium und Heizmittel aus mehreren Richtungen. Auf dem Sensorsockel mittels Schweißung aufgesetzt befindet sich der Stator, der mittig zwischen den Meßrohrschenkeln angeordnet ist und am oberen Ende mechanisch fixiert über Abstandshülsen die Spulenplattform mit bestückten Spulen zum Antrieb und zur Meßaufnahme aufnimmmt. This object is achieved according to the invention in that a single vibrating tube with symmetrically and mirror-image arranged magnets with its parallel vibrating tube ends is inserted and welded into a sensor base. The sensor base carries the measuring tube, serves as a heating and housing support and is designed with flow channels for medium supply, medium drain, heating medium inlet and heating medium outlet. The process screw threads and heating medium thread connections in the sensor base enable medium and heating medium to be supplied and discharged from several directions. The stator is welded onto the sensor base and is arranged centrally between the measuring tube legs. The stator is mechanically fixed at the upper end via spacer sleeves and holds the coil platform with fitted coils for driving and measuring.
-7--7-
Die mit dem Schwingrohr tanzenden Magnete tauchen in die Spulenzentren der auf der Spulenplattform befindlichen Spulen ein.The magnets dancing with the vibrating tube immerse themselves in the coil centers of the coils located on the coil platform.
Der Schwingungsabbau des Schwingrohres erfolgt in den Sensorsockel wobei Schwingungsrestresonanzen über und mit den im Stator befindlichen Bohrungen abgebaut werden. Die Meß-und Antriebskabel von den Spulen kommend, werden über den Stator geführt und gehen zusammen mit den Temperaturmeßkabeln durch einen kabeldurchführungskanal im Sensorsockel befindlich zum Anschlußkasten außerhalb desSensorsockels gelegen.The vibration reduction of the vibrating tube takes place in the sensor base, whereby residual vibration resonances are reduced via and with the holes in the stator. The measuring and drive cables coming from the coils are routed via the stator and, together with the temperature measuring cables, go through a cable feed-through channel in the sensor base to the connection box located outside the sensor base.
Die auf dem Sensorsockel aufgesetzten plattenförmigen hohlen Heizkörper werden über den Sensorsockel mit Heizmittel versorgt und sind in unmittelbarer Nähe berührungsfrei zu den Meßrohrschenkeln angeordnet. Die kurzen Abstände zwischen Heizkörpern und Meßrohrschenkeln ermöglichen in Verbindung mit den Abstrahlflächen der Heizkörper ein Optimum an Wärmeübertragung auf die Meßrohrschenkel. Meßrohr und stator sind bezüglich des Ausdehnungsverhaltens bei höheren Temperaturen aufeinander abgestimmt. Die Elastizitätsänderung des Meßrohres und damit möglich Meßabweichung wird über einen Temperaturfühler am Meßrohrschenkel der Auswerteelektronik übermittelt und dort korrigiert. Zur Reduzierung der Abstrahlwärme des Sensorgehäuses kann eine äußere Wärmeisolierung am Sensor erfolgen.The plate-shaped hollow heating elements placed on the sensor base are supplied with heating medium via the sensor base and are arranged in the immediate vicinity of the measuring tube legs without contact. The short distances between the heating elements and the measuring tube legs, in conjunction with the radiating surfaces of the heating elements, enable optimum heat transfer to the measuring tube legs. The measuring tube and stator are coordinated with each other in terms of their expansion behavior at higher temperatures. The change in elasticity of the measuring tube and the resulting possible measurement deviation is transmitted to the evaluation electronics via a temperature sensor on the measuring tube leg and corrected there. To reduce the heat radiated by the sensor housing, external thermal insulation can be provided on the sensor.
BezugszeichnlisteReference drawing list
1 Schwingrohr1 oscillating tube
2 Magnethalter2 magnetic holders
3 Magnete3 magnets
4 Parallele Schwingrohrenden4 Parallel vibrating tube ends
5 Sensorsockel5 Sensor base
6 Durchströmkanal (Produkt)6 Flow channel (product)
7 Prozeßflanscheinschraubgewinde7 Process flange screw thread
8 Produkteintritt8 Product entry
9 Produktaustritt9 Product leakage
10 Stator10 Stator
11 Schwingresonanzabbaubohrung11 Vibration resonance reduction bore
12 Spulenplattform12 Coil platform
13 Abstandshülse13 Spacer sleeve
14 Antriebsspule14 Drive coil
15 Meßspule15 Measuring coil
16 Schwingrohrschenkel im Sensorsockel16 Vibration tube legs in the sensor base
17 Heizkörper17 radiators
18 Heizraittelkanal18 Heating element channel
19 Heizkörperende19 Radiator end
20 Heizmittelgewindeanschluß20 Heating medium thread connection
21 Gewindebolzen21 threaded bolts
22 Mutter22 Mother
Fig. 1 Zusammenbau Hochtemperatur Masse-Durchflußraesser. Fig. 2 Teilansicht Spulenträger mit Meßaufnehmern.Fig. 1 Assembly of high temperature mass flowmeter. Fig. 2 Partial view of coil carrier with measuring sensors.
Fig. 3 Teilansicht Sensorsockel mit Durchführungen und Anschlüssen.Fig. 3 Partial view of sensor base with feedthroughs and connections.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29709692U DE29709692U1 (en) | 1997-06-04 | 1997-06-04 | High temperature mass flow meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29709692U DE29709692U1 (en) | 1997-06-04 | 1997-06-04 | High temperature mass flow meter |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29709692U1 true DE29709692U1 (en) | 1997-07-31 |
Family
ID=8041120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29709692U Expired - Lifetime DE29709692U1 (en) | 1997-06-04 | 1997-06-04 | High temperature mass flow meter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE29709692U1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000012971A1 (en) * | 1998-08-26 | 2000-03-09 | Micro Motion, Inc. | High temperature drive system for a coriolis mass flowmeter |
DE102006013601A1 (en) * | 2006-03-22 | 2007-09-27 | Endress + Hauser Flowtec Ag | Transducer of the vibration type |
US7546777B2 (en) | 2006-03-22 | 2009-06-16 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type |
US7555962B2 (en) | 2006-03-22 | 2009-07-07 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type |
US7631561B2 (en) | 2006-03-22 | 2009-12-15 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type |
DE102010018222A1 (en) * | 2010-04-23 | 2011-10-27 | Krohne Ag | Coriolis mass flowmeter |
DE102011117282A1 (en) * | 2011-08-16 | 2013-02-21 | Krohne Ag | Coriolis mass flowmeter |
US8607643B2 (en) | 2011-08-16 | 2013-12-17 | Krohne Ag | Coriolis mass flowmeter |
-
1997
- 1997-06-04 DE DE29709692U patent/DE29709692U1/en not_active Expired - Lifetime
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000012971A1 (en) * | 1998-08-26 | 2000-03-09 | Micro Motion, Inc. | High temperature drive system for a coriolis mass flowmeter |
DE102006013601A1 (en) * | 2006-03-22 | 2007-09-27 | Endress + Hauser Flowtec Ag | Transducer of the vibration type |
US7546777B2 (en) | 2006-03-22 | 2009-06-16 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type |
US7555962B2 (en) | 2006-03-22 | 2009-07-07 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type |
US7631561B2 (en) | 2006-03-22 | 2009-12-15 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type |
US8099850B2 (en) | 2006-03-22 | 2012-01-24 | Endress + Hauser Flowtec Ag | Method for manufacturing a measuring transducer of vibration-type |
DE102010018222A1 (en) * | 2010-04-23 | 2011-10-27 | Krohne Ag | Coriolis mass flowmeter |
DE102010018222B4 (en) * | 2010-04-23 | 2012-03-22 | Krohne Ag | Coriolis mass flowmeter |
US8528419B2 (en) | 2010-04-23 | 2013-09-10 | Krohne Ag | Coriolis mass flowmeter having a reinforcement element for shifting implemented eigenfrequencies of the housing away from the operating frequency |
DE102011117282A1 (en) * | 2011-08-16 | 2013-02-21 | Krohne Ag | Coriolis mass flowmeter |
US8607643B2 (en) | 2011-08-16 | 2013-12-17 | Krohne Ag | Coriolis mass flowmeter |
US8806959B2 (en) | 2011-08-16 | 2014-08-19 | Krohne Ag | Coriolis mass flowmeter |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R086 | Non-binding declaration of licensing interest | ||
R207 | Utility model specification |
Effective date: 19970911 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20010403 |
|
R081 | Change of applicant/patentee |
Owner name: ELSEN, ULRICH, DIPL.-ING., DE Free format text: FORMER OWNER: ELSEN, ULRICH, DIPL.-ING., 47057 DUISBURG, DE Effective date: 20020605 |