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DE470963C - Heat meter for flowing liquids - Google Patents

Heat meter for flowing liquids

Info

Publication number
DE470963C
DE470963C DEB128324D DEB0128324D DE470963C DE 470963 C DE470963 C DE 470963C DE B128324 D DEB128324 D DE B128324D DE B0128324 D DEB0128324 D DE B0128324D DE 470963 C DE470963 C DE 470963C
Authority
DE
Germany
Prior art keywords
heat meter
flowing liquids
liquid
heat
speed
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
Application number
DEB128324D
Other languages
German (de)
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.)
MAX BAREISS DIPL ING
Original Assignee
MAX BAREISS DIPL ING
Publication date
Priority to DEB128324D priority Critical patent/DE470963C/en
Application granted granted Critical
Publication of DE470963C publication Critical patent/DE470963C/en
Expired legal-status Critical Current

Links

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
    • G01K17/12Indicating product of flow and temperature difference directly or temperature
    • G01K17/16Indicating product of flow and temperature difference directly or temperature using electrical or magnetic means for both measurements

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Description

Wärmezähler für strömende Flüssigkeiten Die in einer Flüssigkeitsbahn in der Zeiteinheit übertragene und an die Flüssigkeit gebundene Wärmemenge ist direkt proportional der Geschwindigkeit der Flüssigkeit und der Temperaturdifferenz zwischen Anfang und Ende der betrachteten Strömungsbahn. Beide Faktoren können einzeln bestimmt und mit einer geeigneten Einrichtung ihr Produkt ermittelt und nach Bedarf zeitlich summiert werden.Heat meters for flowing liquids Die in a liquid path The amount of heat transferred in the unit of time and bound to the liquid is direct proportional to the speed of the liquid and the temperature difference between Beginning and end of the flow path under consideration. Both factors can be determined individually and determines your product with a suitable device and, if necessary, in terms of time can be summed up.

Es sind schon Wärmemengenmesser bekannt, bei denen als Maß die Stromstärke oder Spannung eines elektrischen Stromerzeugers verwendet ist, dessen Umdrehungsgeschwindigkeit abhängt von der Strömungsgeschwindigkeit des Wärmeträgers. Der Stromerzeuger arbeitet hierbei auf eine temperaturabhängige Wheatstonesche Brücke. Der Nachteil dieser Anordnung liegt darin, daß durch den erforderlichen permanenten Magneten eine Bremsung des Flügelrades auftritt. Es sind weiter Vorrichtungen bekannt, bei denen die Umdrehungsgeschwindigkeit eines. Flügelrades gesteuert wird durch die bewegte Flüssigkeitsmenge einerseits und die bremsend wirkenden Induktionsströme in einer Metallscheibe andererseits, deren Stärke dann abhängt vom veränderlichen Widerstand einer Drahtschleife. Vor diesen Einrichtungen hat die Vorrichtung nach der Erfindung den Vorteil, daß die Bremsung und fremde Energiequellen vermieden sind.Heat meters are already known in which the current strength is used as a measure or voltage of an electric generator is used, its speed of rotation depends on the flow speed of the heat carrier. The generator is working here on a temperature-dependent Wheatstone bridge. The disadvantage of this The arrangement is that braking is provided by the required permanent magnet of the impeller occurs. There are also known devices in which the speed of rotation one. The impeller is controlled by the amount of liquid moved on the one hand and the braking induced induction currents in a metal disk on the other hand, the strength of which then depends on the variable resistance of a wire loop. before these devices, the device according to the invention has the advantage that the Braking and external energy sources are avoided.

Sie besteht darin, daß die Umdrehungsgeschwindigkeit eines elektrischen Stromerzeugers abhängig ist von der Strömungsgeschwindigkeit der Flüssigkeit und seine Felderregung von einem oder mehreren Thermoelementen geliefert wird, die zwischen Anfang und Ende der betrachteten Strömungsbahn in der Flüssigkeit liegen.It consists in that the speed of rotation of an electric Power generator depends on the flow rate of the liquid and its field excitation is supplied by one or more thermocouples between The beginning and end of the flow path under consideration lie in the liquid.

Die Ausführung einer Meßeinrichtung nach der Erfindung ist einerseits möglich geworden durch Anwendung der erst in jüngster Zeit bekannt gewordenen Eisenlegierungen von sehr hoher Anfangspermeabilität und kleiner Koerzitivkraft und Remanenz und andererseits durch Verwendung der für andere Zwecke gebräuchlichen hochempfindlichen elektrolytischen Zähler.The execution of a measuring device according to the invention is on the one hand made possible through the use of iron alloys, which have only recently become known of very high initial permeability and small coercive force and remanence and on the other hand, by using the highly sensitive ones that are commonly used for other purposes electrolytic counter.

Teils um die für die Erregung des Stromerzeugers notwendigen elektrischen Leitungen zwischen Zu- und Abfluß zu kürzen, teils um unbefugte Eingriffe in die Meßstelle zu erschweren, kann es zweckmäßig sein, Zu-und Abfluß der Flüssigkeitsbahn einander an der Meßstelle zu nähern, und zwar entweder diese selbst oder Abzweige derselben. Auch kann, statt der Temperatur des Abflusses die einer beliebigen außerhalb .liegenden Meßstelle gewählt werden.Partly about the electrical ones necessary for the excitation of the power generator To shorten lines between inflow and outflow, partly to prevent unauthorized interference in the To make the measuring point more difficult, it can be useful to control the inflow and outflow of the liquid path to approach each other at the measuring point, either this itself or branches the same. Also, instead of the temperature of the drain, that of any outside .Located measuring point can be selected.

In der Abbildung ist eine Meßeinrichtung nach der Erfindung dargestellt. Der Wärmeträger fließt in der Rohrleitung i zu den Verbrauchern 2 und nach Abgabe seiner Wärme über die Leitung 3 wieder ab. In der Leitung i befindet sich das Flügelrad 4 zum Antrieb des Ankers 5 des Stromerzeugers, dessen Feldwicklung 7 durch mehrere in Zu- und Abfluß liegende Thermoelemente 6 erregt wird. Bei 8 ist nach Bedarf zur Messung des augenblicklichen Wärmeverbrauchs ein Galvanometer oder zur zeitlichen Summierung ein elektrischer Zähler angeschlossen.In the figure, a measuring device according to the invention is shown. The heat transfer medium flows in pipeline i to consumers 2 and after delivery its heat via line 3 again. The impeller is located in line i 4 to drive the armature 5 of the power generator, the field winding 7 of which by several Thermocouples 6 lying in the inflow and outflow is excited. At 8 is for as needed Measurement of the instantaneous heat consumption a galvanometer or at the time Summing connected to an electrical counter.

Claims (1)

PATENTANSPRUCH: Wärmezähler für strömende Flüssigkeiten, bei dem der elektrische Strom einer vom Flüssigkeitsstrom angetriebenen Dynamomaschine gemessen wird, dadurch gekennzeichnet, daß das Feld der Dynamomaschine durch im Vor- und Rücklauf des Flüssigkeitsstroms angebrachte Thermoelemente erregt ist.PATENT CLAIM: Heat meter for flowing liquids, in which the electrical current measured by a dynamo driven by the flow of liquid is, characterized in that the field of the dynamo machine by in front and Return of the liquid flow attached thermocouples is energized.
DEB128324D Heat meter for flowing liquids Expired DE470963C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB128324D DE470963C (en) Heat meter for flowing liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB128324D DE470963C (en) Heat meter for flowing liquids

Publications (1)

Publication Number Publication Date
DE470963C true DE470963C (en) 1929-02-01

Family

ID=6997113

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB128324D Expired DE470963C (en) Heat meter for flowing liquids

Country Status (1)

Country Link
DE (1) DE470963C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0918212B2 (en) 1997-11-19 2006-11-15 ista Deutschland GmbH Method ans apparatus for the acquisition and evaluation of temperature dependent consumption values or other physical measuring values

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0918212B2 (en) 1997-11-19 2006-11-15 ista Deutschland GmbH Method ans apparatus for the acquisition and evaluation of temperature dependent consumption values or other physical measuring values

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