DE19900774A1 - Heat meter with volume measurement unit has temperature sensor and back-flow sensing device as well as cable connection arranged in a measurement chamber of volume measurement unit within heat meter - Google Patents

Heat meter with volume measurement unit has temperature sensor and back-flow sensing device as well as cable connection arranged in a measurement chamber of volume measurement unit within heat meter

Info

Publication number
DE19900774A1
DE19900774A1 DE1999100774 DE19900774A DE19900774A1 DE 19900774 A1 DE19900774 A1 DE 19900774A1 DE 1999100774 DE1999100774 DE 1999100774 DE 19900774 A DE19900774 A DE 19900774A DE 19900774 A1 DE19900774 A1 DE 19900774A1
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DE
Germany
Prior art keywords
heat meter
measurement unit
return
volume measurement
temperature sensor
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Withdrawn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
DE1999100774
Other languages
German (de)
Inventor
Jens Forche
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.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Priority to DE1999100774 priority Critical patent/DE19900774A1/en
Publication of DE19900774A1 publication Critical patent/DE19900774A1/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00Measuring quantity of heat
    • G01K17/06Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
    • G01K17/08Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
    • G01K17/10Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Individual cable connection (9,15,16) to an arithmetic unit is provided for transferring measurement values from a volume measurement unit and from temperature sensors. The temperature sensor and a back-flow sensing device (6 ) as well as the cable connection (9 ) are arranged in a measurement chamber (4 ) of the volume measurement unit (18) within the heat meter.

Description

Die Erfindung betrifft einen Wärmezähler mit einem Volumenmeßteil, einem Re­ chenwerk, sowie je einem Temperaturfühler für den Vor- und den Rücklauf, wobei zur Übertragung der Meßwerte vom Volumenmeßteil und von den Temperaturfühlern je eine Kabelverbindung zum Rechenwerk vorgesehen ist.The invention relates to a heat meter with a volume measuring part, a Re chenwerk, as well as a temperature sensor for the flow and the return, whereby for transferring the measured values from the volume measuring part and from the temperature sensors One cable connection to the calculator is provided.

Bei derartigen allgemein als Kompaktwärmezähler bekannten Zählern sind die we­ sentlichen Komponenten wie Rechenwerk und Volumenmeßteil zu einer baulichen Einheit zusammengefaßt. Der Wärmezähler ist im Rücklauf einer Wärmeversor­ gungsanlage eingebaut. Zur Erfassung der Wärmemenge wird beim eintreffenden Volumenimpuls eine Temperaturabfrage der Vor- und Rücklauffühler ausgelöst. Die­ se Widerstandsthermometer müssen vom selben Typ sein und auf das Rechenwerk eingestellt sein. Das Rechenwerk verfügt also beim Eintreffen der Temperaturwerte von Vor- und Rücklauf über die daraus resultierende Temperaturdifferenz und über den mittel Impuls gemeldeten Durchfluß. Aus diesen nun bekannten physikalischen Größen läßt sich mit Hilfe noch einiger Korrekturfaktoren die Wärmemenge berech­ nen. Da sich jedoch ein Temperaturfühler im Vorlauf und ein Temperaturfühler im Rücklauf befindet, müssen beide mit einem Kabel mit dem Volumenmeßteil mit inte­ griertem Rechenwerk verbunden werden. Möchte man auf eine Kompensation der unterschiedlichen Leitungswiderstände und auf eine wesentlich teurere Vierleiter­ technik verzichten, so ist man gezwungen, die Leitungen beider Temperaturfühler mit der gleichen Länge zu versehen. Bei den hier beschriebenen Kompaktgeräten sitzt ein Temperaturfühler im Vorlauf und ein Temperaturfühler im Rücklauf möglichst nah am Volumenmeßteil, welches auch das Rechenwerk trägt. Durch diese Anordnung und dem zuvor erläuterten Problem bleibt eine erhebliche Kabellänge zwischen dem Rücklauffühler und dem Rechenwerk übrig und ist störend bei der Installation. Es besteht nun die Möglichkeit, die Kabellänge des Rücklauffühlers zu verkürzen und eine Widerstandskompensation im Rechenwerk einzubringen. Dabei entfällt die stö­ rende Kabellänge zwischen dem Rechenwerk und dem Fühler.In such counters, generally known as compact heat meters, we essential components such as arithmetic unit and volume measuring part to a structural Unit summarized. The heat meter is in the return of a heat supplier system installed. To record the amount of heat, when it arrives Volume pulse triggered a temperature query of the flow and return sensors. The Resistance thermometers must be of the same type and on the calculator be set. The arithmetic unit therefore has at the arrival of the temperature values of forward and return flow over the resulting temperature difference and over the mean impulse reported flow. From these now known physical The amount of heat can be calculated with the help of a few correction factors nen. However, since there is a temperature sensor in the flow and a temperature sensor in the Return is located, both must be connected to the volume measuring part with inte integrated calculator. Would you like to compensate for the different line resistances and on a much more expensive four-wire without technology, you are forced to use the cables of both temperature sensors the same length. In the compact devices described here sits a temperature sensor in the flow and a temperature sensor in the return as close as possible  on the volume measuring part, which also carries the calculator. By this arrangement and the problem discussed above, there remains a significant cable length between the Return sensor and the calculator left and is disruptive during installation. It there is now the possibility to shorten the cable length of the return sensor and to introduce resistance compensation in the calculator. The stö cable length between the calculator and the sensor.

Es stellt sich die Aufgabe einen Wärmezähler der eingangs genannten Art anzuge­ ben, der ohne ein außerhalb des Wärmezählers verlaufendes Kabel des Rücklauf­ fühlers auskommt.The task is to suit a heat meter of the type mentioned ben, without a return cable running outside the heat meter feelers get along.

Gelöst wird diese Aufgabe erfindungsgemäß dadurch, daß der Temperaturfühler für den Rücklauf (Rücklauffühler) in eine Meßkammer des Volumenmeßteils ragt und daß der Rücklauffühler sowie die Kabelverbindung zum Rechenwerk innerhalb des Wärmezählers angeordnet ist.This object is achieved in that the temperature sensor for the return (return sensor) protrudes into a measuring chamber of the volume measuring part and that the return sensor and the cable connection to the calculator within the Heat meter is arranged.

Der somit in den von Wasser durchströmten Innenraum des Wärmezählers ragende Rücklauffühler schafft eine kompakte Meßkartusche. Aus dem Wärmezähler führt lediglich noch eine Kabelverbindung zum Vorlauffühler. Das bei der Montage des Wärmezählers störende Kabel des Rücklauffühlers ist ebenfalls innerhalb des Zählergehäuses angeordnet. Die Möglichkeit einer Manipulation der Meßwerte am Rücklauffühler ist durch die vorgesehene Maßnahme ausgeschlossen.The one that protrudes into the interior of the heat meter through which water flows Return sensor creates a compact measuring cartridge. Leads out of the heat meter just a cable connection to the flow sensor. That when assembling the Heat meter interfering cable of the return sensor is also inside the Counter housing arranged. The possibility of manipulating the measured values on Return sensor is excluded by the proposed measure.

Der Rücklauffühler kann ein Teil der in der Meßkammer angeordneten Komponenten sein.The return sensor can be part of the components arranged in the measuring chamber his.

Mit der Einbindung des Temperaturfühlers in derartige Komponenten wie zum Bei­ spiel die Mechanik oder den Volumenmeßteil wird eine platzsparende kompakte An­ ordnung geschaffen, die nicht störend auf die Hydraulik wirkt.With the integration of the temperature sensor in such components as for example The mechanics or the volume measuring part becomes a space-saving, compact unit order created that does not interfere with the hydraulics.

Vorzugsweise ist der Rücklauffühler in eine Tauchhülse angeordnet.The return sensor is preferably arranged in an immersion sleeve.

Anhand eines Ausführungsbeispieles und einer schematischen Figur wird der erfin­ dungsgemäße Wärmezähler beschrieben. Based on an embodiment and a schematic figure, the invented heat meters according to the invention described.  

Ein mit 1 bezeichneter Wärmezähler ist über seine Gehäuseanschlußflansche 2 mit einem nicht dargestellten Rücklauf eines Wärmeversorgungskreislaufes wie zum Beispiel einer Heizungsanlage verbunden. Das im Rücklauf fließende Wasser strömt in Pfeilrichtung 3 durch eine mit einem Flügelrad 14 ausgestatteten Meßkammer 4 und verläßt in Pfeilrichtung 5 den Wärmezähler 1. In die Meßkammer 4 ragt ein Rücklauffühler 6, der in einer Gewindebohrung 7 eines die Meßkammer 4 aufneh­ menden Gehäuseteiles 8 festgelegt ist. Der Rücklauffühler 6 ist vom die Meßkammer duchfließendem Wasser umströmt und gibt über Kabel 9 die gemessene Temperatur an einen Rechner 10, der von einer mit dem Gehäuseteil 8 verbundenen Haube 11 abgedeckt ist. Unter der Haube 11 ist ferner eine Batterie 12 und ein Display 13 an­ geordnet.A heat meter denoted by 1 is connected via its housing connection flanges 2 to a return of a heat supply circuit, not shown, such as a heating system. The water flowing in the return flows in the direction of the arrow 3 through a measuring chamber 4 equipped with an impeller 14 and leaves the heat meter 1 in the direction of the arrow 5 . In the measuring chamber 4 extends a return sensor 6, which is fixed in a threaded bore 7 of the measuring chamber 4 Transd Menden housing part. 8 The return sensor 6 is surrounded by water flowing through the measuring chamber and gives the measured temperature via cable 9 to a computer 10 , which is covered by a hood 11 connected to the housing part 8 . Under the hood 11 , a battery 12 and a display 13 is also arranged.

Das Volumen des die Meßkammer durchströmenden Wassers wird mit einem Sen­ sor 17 abgegriffen und über Kabel 15 ebenfalls an den Rechner 10 gegeben. Die Meßwerte des nicht dargestellten Vorlauffühlers werden über eine die Haube 11 durchsetzenden Leitung 16 an den Rechner 10 gegeben. Die im Rechner eingelau­ fenen Meßwerte dienen zur Erfassung der Wärmemenge. Die Meßkammer 4 ist Teil eines Volumenmeßteils 18, der in dem Gehäuseteil 8 angeordnet ist. Der Rücklauf­ fühler 6 und das Kabel 9 sind innerhalb des Wärmezählers angeordnet.The volume of the water flowing through the measuring chamber is tapped with a sensor 17 and also passed to the computer 10 via cable 15 . The measured values of the flow sensor, not shown, are passed to the computer 10 via a line 16 passing through the hood 11 . The measured values entered in the computer serve to record the amount of heat. The measuring chamber 4 is part of a volume measuring part 18 which is arranged in the housing part 8 . The return sensor 6 and the cable 9 are arranged within the heat meter.

Claims (3)

1. Wärmezähler mit einem Volumenmeßteil (18), mit einem Rechenwerk (10), sowie je einem Temperaturfühler für den Vor- und den Rücklauf, wobei zur Übertragung der Meßwerte vom Volumenmeßteil und von den Temperaturfühlern je eine Kabelverbindung (9, 15, 16) zum Rechenwerk vorgesehen ist, dadurch gekenn­ zeichnet, daß der Temperaturfühler für den Rücklauf (Rücklauffühler 6) in eine Meß­ kammer (4) des Volumenmeßteils (18) ragt und daß der Rücklauffühler (6) sowie die Kabelverbindung (9) innerhalb des Wärmezählers angeordnet ist.1. Heat meter with a volume measuring part ( 18 ), with an arithmetic unit ( 10 ), and a temperature sensor for the flow and return, each with a cable connection ( 9 , 15 , 16 ) for transferring the measured values from the volume measuring part and from the temperature sensors. is provided to the calculator, characterized in that the temperature sensor for the return (return sensor 6) chamber in a measuring (4) protrudes the Volumenmeßteils (18) and that the return temperature sensor (6) and the cable connection (9) is disposed within the heat meter . 2. Wärmezähler nach Anspruch 1 dadurch gekennzeichnet, daß der Rücklauffühler (6) ein Teil der in der Meßkammer (4) angeordneten Komponenten ist.2. Heat meter according to claim 1, characterized in that the return sensor ( 6 ) is part of the components arranged in the measuring chamber ( 4 ). 3. Wärmezähler nach einem der Patentansprüche 1 oder 2, dadurch ge­ kennzeichnet, daß der Rücklauffühler (6) in einer Tauchhülse angeordnet ist.3. Heat meter according to one of claims 1 or 2, characterized in that the return sensor ( 6 ) is arranged in an immersion sleeve.
DE1999100774 1999-01-12 1999-01-12 Heat meter with volume measurement unit has temperature sensor and back-flow sensing device as well as cable connection arranged in a measurement chamber of volume measurement unit within heat meter Withdrawn DE19900774A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999100774 DE19900774A1 (en) 1999-01-12 1999-01-12 Heat meter with volume measurement unit has temperature sensor and back-flow sensing device as well as cable connection arranged in a measurement chamber of volume measurement unit within heat meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999100774 DE19900774A1 (en) 1999-01-12 1999-01-12 Heat meter with volume measurement unit has temperature sensor and back-flow sensing device as well as cable connection arranged in a measurement chamber of volume measurement unit within heat meter

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DE19900774A1 true DE19900774A1 (en) 2000-07-13

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045209A1 (en) * 2000-09-13 2002-04-04 Abb Patent Gmbh Heat counter has volume measurement unit with temperature sensor provided in impeller wheel bucket
CN1300557C (en) * 2004-12-28 2007-02-14 蒋韵坚 Rotary wing flow sensor
FR2897429A1 (en) * 2006-02-15 2007-08-17 Actaris Sas Soc Par Actions Si THERMAL ENERGY COUNTER
DE102010033683A1 (en) * 2010-08-06 2012-02-09 Hans-Holger Körner Fluid flow measurement capsule for heat meter, has temperature sensor whose connecting cable is protruded over plane of connection side from inlet opening
US10656170B2 (en) 2018-05-17 2020-05-19 Allegro Microsystems, Llc Magnetic field sensors and output signal formats for a magnetic field sensor
US10725122B2 (en) 2018-07-20 2020-07-28 Allegro Microsystems, Llc Ratiometric sensor output topology and methods
US11029370B1 (en) 2020-05-22 2021-06-08 Allegro Microsystems, Llc Sensor output control methods and apparatus
US11885645B2 (en) 2021-06-17 2024-01-30 Allegro Microsystems, Llc Supply voltage configurable sensor
US11942831B2 (en) 2020-01-15 2024-03-26 Allegro Microsystems, Llc Three-phase BLDC motor driver/controller having diagnostic signal processing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648274B2 (en) * 1967-04-01 1974-01-03 Elster Ag Mess- Und Regeltechnik, 6500 Mainz Mechanical heat meter in compact design
DE2522163A1 (en) * 1975-05-17 1976-11-25 Bosch Gmbh Robert Heat consumption meter esp. for hot water - with consumption computed as product of flow rate and temp. difference
DE3206360A1 (en) * 1982-02-22 1983-09-01 geb. Ritter Beate Dipl.-Ök. 8870 Günzburg Schmatz Heat meter
DE29606674U1 (en) * 1996-04-12 1996-08-22 E. Wehrle GmbH, 78120 Furtwangen Combined cold and hot water meter
DE29619790U1 (en) * 1996-11-14 1997-01-02 Engelmann Sensor GmbH, 69168 Wiesloch Device for detecting the amount of heat consumed by a hot water consumer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648274B2 (en) * 1967-04-01 1974-01-03 Elster Ag Mess- Und Regeltechnik, 6500 Mainz Mechanical heat meter in compact design
DE2522163A1 (en) * 1975-05-17 1976-11-25 Bosch Gmbh Robert Heat consumption meter esp. for hot water - with consumption computed as product of flow rate and temp. difference
DE3206360A1 (en) * 1982-02-22 1983-09-01 geb. Ritter Beate Dipl.-Ök. 8870 Günzburg Schmatz Heat meter
DE29606674U1 (en) * 1996-04-12 1996-08-22 E. Wehrle GmbH, 78120 Furtwangen Combined cold and hot water meter
DE29619790U1 (en) * 1996-11-14 1997-01-02 Engelmann Sensor GmbH, 69168 Wiesloch Device for detecting the amount of heat consumed by a hot water consumer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Prospekt: Siemens - Statistischer Wärmezähler in Ultraschalltechnik *
Teure Technik mit Tücken. In: Test 8/84, S.786- S.789 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045209A1 (en) * 2000-09-13 2002-04-04 Abb Patent Gmbh Heat counter has volume measurement unit with temperature sensor provided in impeller wheel bucket
DE10045209B4 (en) * 2000-09-13 2005-03-10 Abb Patent Gmbh Heat meter with a Volumenmeßteil
CN1300557C (en) * 2004-12-28 2007-02-14 蒋韵坚 Rotary wing flow sensor
CN101384890B (en) * 2006-02-15 2011-01-05 阿克塔锐斯两合公司 Thermal energy meter
WO2007093732A2 (en) * 2006-02-15 2007-08-23 Actaris Sas Thermal energy meter
WO2007093732A3 (en) * 2006-02-15 2007-10-18 Actaris Sas Thermal energy meter
FR2897429A1 (en) * 2006-02-15 2007-08-17 Actaris Sas Soc Par Actions Si THERMAL ENERGY COUNTER
DE102010033683A1 (en) * 2010-08-06 2012-02-09 Hans-Holger Körner Fluid flow measurement capsule for heat meter, has temperature sensor whose connecting cable is protruded over plane of connection side from inlet opening
DE102010033683B4 (en) * 2010-08-06 2013-01-03 Hans-Holger Körner Measuring capsule for heat meter
US10656170B2 (en) 2018-05-17 2020-05-19 Allegro Microsystems, Llc Magnetic field sensors and output signal formats for a magnetic field sensor
US10725122B2 (en) 2018-07-20 2020-07-28 Allegro Microsystems, Llc Ratiometric sensor output topology and methods
US10908230B2 (en) 2018-07-20 2021-02-02 Allegro Microsystems, Llc Ratiometric sensor output topology and methods
US11942831B2 (en) 2020-01-15 2024-03-26 Allegro Microsystems, Llc Three-phase BLDC motor driver/controller having diagnostic signal processing
US11029370B1 (en) 2020-05-22 2021-06-08 Allegro Microsystems, Llc Sensor output control methods and apparatus
US11885645B2 (en) 2021-06-17 2024-01-30 Allegro Microsystems, Llc Supply voltage configurable sensor

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