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DE4008166A1 - Monitoring fluidic systems with regulation and-or choke elements - by comparing element speeds with limit values to enable selection of control method - Google Patents

Monitoring fluidic systems with regulation and-or choke elements - by comparing element speeds with limit values to enable selection of control method

Info

Publication number
DE4008166A1
DE4008166A1 DE4008166A DE4008166A DE4008166A1 DE 4008166 A1 DE4008166 A1 DE 4008166A1 DE 4008166 A DE4008166 A DE 4008166A DE 4008166 A DE4008166 A DE 4008166A DE 4008166 A1 DE4008166 A1 DE 4008166A1
Authority
DE
Germany
Prior art keywords
regulation
limit values
flow
control method
fluidic systems
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Withdrawn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
DE4008166A
Other languages
German (de)
Inventor
Thomas Baehr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE4008166A priority Critical patent/DE4008166A1/en
Publication of DE4008166A1 publication Critical patent/DE4008166A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1018—Radiator valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
    • G05D23/1934—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces each space being provided with one sensor acting on one or more control means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Control Of Temperature (AREA)

Abstract

The method of monitoring fluidic systems with regulation and/or choke elements involves determining the speeds of the elements and differentiating between them by comparing them with predefined limiting values. The results of the comparison are used to influence another, optional technique. The flow of the medium is measured continuously and associated with the rate of change of the control rate of a corresponding regulation or choke element. USE/ADVANTAGE - E.g. for use in heating systems, enables information to be generated enabling selection of method from one of several, e.g. for variation of system input temperature.

Description

Die Erfindung betrifft ein Verfahren zur Überwachung von fluid­ technischen Anlagen mit Regel- und/oder Drosselorganen.The invention relates to a method for monitoring fluid technical systems with control and / or throttling devices.

Beispielsweise für Heizungsanlagen sind verschiedene Verfahren bekannt, wonach die Vorlauftemperatur der Heizungsanlage nach Maßgabe des Energiebedarfs eines Gebäudes gesteuert wird. Da­ bei tritt jedoch das Problem auf, daß die Vorlauftemperatur­ steuerung nicht unterscheiden kann, ob die Heizkörperventile der Heizungsanlage von Hand oder thermostatisch betätigt wer­ den. Eine solche Information wäre jedoch für eine optimale Funk­ tion der Vorlauftemperatursteuerung wichtig. Werden beispiels­ weise Heizkörperventile innerhalb einer Heizungsanlage thermo­ statisch gedrosselt, so ist das ein Hinweis darauf, daß die Anlage weniger Heizenergie benötigt. Die Vorlauftemperatur könnte also reduziert werden. Werden jedoch nur einzelne Heiz­ körperventile von Hand gedrosselt oder abgesperrt, so bedeutet dies, daß die verbleibenden Anlagenteile entsprechend dem wit­ terungsbedingten Heizenergiebedarf weiterhin in vollem Umfang mit Heizenergie versorgt werden müssen. Die Absenkung der Vor­ lauftemperatur wäre dann nicht erwünscht.For example, there are various methods for heating systems known that the flow temperature of the heating system after Is controlled according to the energy requirement of a building. There however, the problem arises that the flow temperature control can not distinguish whether the radiator valves the heating system operated manually or thermostatically the. However, such information would be for optimal radio tion of the flow temperature control is important. For example wise radiator valves within a heating system thermo statically throttled, this is an indication that the System requires less heating energy. The flow temperature could be reduced. However, only individual heaters Body valves throttled or shut off by hand, means this means that the remaining plant parts according to the wit heating energy requirements due to aging continue to be fully applicable must be supplied with heating energy. Lowering the front running temperature would then not be desirable.

Der Erfindung liegt die Aufgabe zu Grunde, ein Verfahren anzu­ geben, mit dem es möglich ist, Informationen zu erhalten, die es gestatten, zwischen mehreren anderen, sich auf die fluidtech­ nische Anlage beziehenden Verfahrensmöglichkeiten zu wählen, beispielsweise die Vorlauftemperatur in einer Heizungsanlage zu ändern. Die Erfindung zur Lösung dieser Aufgabe zeichnet sich dadurch aus, daß die Stellgeschwindigkeiten der Regel- und/oder Drosselorgane festgestellt und durch Vergleich mit gegebenen Grenzwerten voneinander unterschieden werden, wobei das Ergebnis dieses Vergleichs zur Beeinflussung eines anderen beliebigen Verfahrens dient. Vorzugweise wird hierbei die Fließbewegung des Mediums in der Anlage fortlaufend gemessen und deren Än­ derungsgeschwindigkeit der Stellgeschwindigkeit eines entsprechen­ den Regel- oder Drosselorgans zugeordnet.The invention is based on the object of starting a method with which it is possible to obtain information that  allow, among several others, to focus on fluidtech process options related to the plant, for example the flow temperature in a heating system to change. The invention for solving this problem stands out characterized in that the control speeds of the control and / or Throttling organs determined and by comparison with given Limits are distinguished from each other, with the result this comparison to influencing any other Procedure serves. The flow movement is preferred here of the medium in the system continuously measured and their changes speed of change correspond to the positioning speed of one assigned to the control or throttling device.

Bekanntlich führt das manuelle Betätigen eines Heizkörperventils zu einer fast schlagartigen Änderung des Medium-Massenstroms. Bei thermostatischer Ventilbetätigung ist dagegen ein erheb­ lich langsamerer Verlauf der Änderungsbewegung feststellbar. Diesen Unterschied macht sich das Verfahren also zunutze, indem durch die ständige Messung der Fließbewegung des Mediums jede Änderung dieser Bewegung erfaßt und entsprechend der Änderungs­ geschwindigkeit der Kategorie "manuell" oder "thermostatisch" zugeordnet wird.As is known, the manual actuation of a radiator valve leads to an almost sudden change in the medium mass flow. With thermostatic valve actuation, on the other hand, is a significant Lich slower course of the change movement is noticeable. The process takes advantage of this difference by: by constantly measuring the flow movement of the medium each Change of this movement is recorded and according to the change speed of category "manual" or "thermostatic" is assigned.

Als Einrichtung zur Durchführung des Verfahrens eignen sich also Mittel zum fortlaufenden Messen der Fließbewegung des Mediums in der Anlage, welche zum Vergleich der Meßwerte und zur Unter­ scheidung nach vorgegebenen Grenzwerten mit einem Rechner ver­ bunden sind.So are suitable as a device for performing the method Means for continuously measuring the flow movement of the medium in the system, which is used to compare the measured values and for sub using a computer to determine the specified limit values are bound.

Bei einer geringeren Änderungsgeschwindigkeit kann also automa­ tisch die Vorlauftemperatur dem sich ändernden Energiebedarf angepaßt werden.With a lower rate of change, automa table the flow temperature to the changing energy demand be adjusted.

Die Heizungstechnik dürfte eines der Hauptanwendungsgebiete für das erfindungsgemäße Verfahren sein, jedoch ist das Verfahren auch auf andere fluidtechnische Anlagen anwendbar.Heating technology should be one of the main areas of application for be the method according to the invention, but the method is also applicable to other fluid power systems.

In der Zeichnung ist das Ausführungsbeispiel einer Heizungsan­ lage, durch welche das erfindungsgemäße Verfahren zur Anwendung kommen kann, dargestellt und nachstehend erläutert.In the drawing, the embodiment of a heating is was able to apply the method according to the invention can come, shown and explained below.

Im Heizkreis befinden sich der Vorlauftemperaturfühler 1, der Rücklauftemperaturfühler 2 sowie ein Mengenstromfühler 3. Sie sind mittels Übertragungsleitungen mit dem Rechner 4 verbunden. Weitere Übertragungsleitungen führen vom Rechner 4 zum moto­ rischen Stellglied 6 eines Mischventils 5 sowie zur Umwälz­ pumpe 9. Die Vorlaufleitung ist mit 10, die Rücklaufleitung von den Heizkörpern 8a und 8b zum Kessel 7 mit 11 bezeichnet.The flow temperature sensor 1 , the return temperature sensor 2 and a volume flow sensor 3 are located in the heating circuit. They are connected to the computer 4 by means of transmission lines. Further transmission lines lead from the computer 4 to the motor actuator 6 of a mixing valve 5 and to the circulation pump 9 . The flow line is designated 10 , the return line from the radiators 8 a and 8 b to the boiler 7 with 11 .

Es sei angenommen, die Heizungsanlage habe sich auf eine Außen­ temperatur ta1 einreguliert. Das Temperaturgefälle ti nach ta1 ist gering, desgleichen auch die Wärmeabgabe der Heizkörper 8a und 8b. Tritt nun ein Temperatursturz ein von ta1 nach ta2, dann wird zunächst die im Mauerwerk 12 gespeicherte Wärme von außen her aufgezehrt. Dies ist ein allmählich fortschreitender Vor­ gang, bei welchem jedoch die Wärmeabgabe der Heizkörper 8a und 8b in gleichem Maße zunimmt, erkennbar durch die absinkende Rück­ lauftemperatur. Das thermostatische Heizkörperventil 13 am Heiz­ körper 8a vergrößert allmählich den Durchlaßquerschnitt, so daß die sich ändernde Fließbewegung des Mediums über den Mengenstrom­ fühler 3 in Abhängigkeit davon festgestellt wird. Die sich all­ mählich ändernde Strömungsgeschwindigkeit signalisiert dem Rech­ ner durch Vergleich mit vorgegebenen Werten die Notwendigkeit einer Erhöhung der Vorlauftemperatur.It is assumed that the heating system has adjusted itself to an outside temperature ta 1 . The temperature gradient ti after ta 1 is small, as is the heat given off by the radiators 8 a and 8 b. If there is a drop in temperature from ta 1 to ta 2 , then the heat stored in the masonry 12 is first consumed from the outside. This is a gradually progressing process, in which, however, the heat emitted by the radiators 8 a and 8 b increases to the same extent, recognizable by the falling return temperature. The thermostatic radiator valve 13 on the heating body 8 a gradually increases the passage cross section, so that the changing flow movement of the medium over the flow rate sensor 3 is determined depending on it. The gradually changing flow rate signals the computer by comparing it with specified values that the flow temperature needs to be increased.

Wird dagegen bei sich nicht verändernden Temperaturen ta und ti die Stellung des Thermostatventils 13 konstant gehalten und nur das Handventil 14 am Heizkörper 8b geöffnet, was wesentlich ra­ scher vor sich geht, so wird erneut über den Mengenstromfühler 3 dem Rechner 4 die Information der Öffnung des Handventils zur Inbetriebnahme eines Heizkörpers bei den unveränderten Wärmever­ hältnissen mitgeteilt. Diesem Zustand wird durch ein Konstanthal­ ten der Vorlauftemperatur Rechnung getragen. On the other hand, if the temperatures ta and ti do not change, the position of the thermostatic valve 13 is kept constant and only the manual valve 14 on the radiator 8 b is opened, which is considerably more difficult, the computer 4 again provides information about the opening via the flow sensor 3 of the manual valve for commissioning a radiator with unchanged heat conditions. This condition is taken into account by keeping the flow temperature constant.

Beim langsamen bzw. plötzlichen Schließen der Ventile laufen diese Vorgänge im ungekehrten Sinne ab.Run when the valves close slowly or suddenly these processes in the opposite direction.

Claims (3)

1. Verfahren zur Überwachung von fluidtechnischen Anlagen mit Regel- und/oder Drosselorganen, dadurch gekennzeichnet, daß die Stellgeschwindigkeiten der Regel- und/oder Drosselorgane fest­ gestellt und durch Vergleich mit vorgegebenen Grenzwerten von­ einander unterschieden werden, wobei das Ergebnis dieses Ver­ gleichs zur Beeinflussung eines anderen, beliebigen Verfahrens dient.1. A method for monitoring fluid power systems with control and / or throttling elements, characterized in that the actuating speeds of the control and / or throttling elements are established and distinguished from one another by comparison with predetermined limit values, the result of this comparison being used to influence it any other method. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Fließbewegung des Mediums in der Anlage fortlaufend gemessen und deren Änderungsgeschwindigkeit der Stellgeschwindigkeit eines entsprechenden Regel- oder Drosselorgans zugeordnet wird.2. The method according to claim 1, characterized in that the Flow movement of the medium in the system continuously measured and their rate of change of the actuating speed a corresponding control or throttling device is assigned. 3. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß Mittel (3) zum fortlaufen­ den Messen der Fließbewegungen des Mediums in der Anlage vorge­ sehen sind, welche zum Vergleich der Meßwerte und zur Unter­ scheidung nach vorgegebenen Grenzwerten mit einem Rechner (4) verbunden sind.3. A device for performing the method according to claim 1 or 2, characterized in that means ( 3 ) for continuously measuring the flow movements of the medium in the system are provided, which for comparison of the measured values and for differentiation according to predetermined limit values with a Computer ( 4 ) are connected.
DE4008166A 1990-03-15 1990-03-15 Monitoring fluidic systems with regulation and-or choke elements - by comparing element speeds with limit values to enable selection of control method Withdrawn DE4008166A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4008166A DE4008166A1 (en) 1990-03-15 1990-03-15 Monitoring fluidic systems with regulation and-or choke elements - by comparing element speeds with limit values to enable selection of control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4008166A DE4008166A1 (en) 1990-03-15 1990-03-15 Monitoring fluidic systems with regulation and-or choke elements - by comparing element speeds with limit values to enable selection of control method

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DE4008166A1 true DE4008166A1 (en) 1991-09-19

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507247A1 (en) * 1995-03-02 1996-09-05 Baunach Hans Georg Method and device for hydraulically optimized regulation of the flow temperature
DE10044734C2 (en) * 1999-09-15 2003-11-06 Bosch Gmbh Robert Arrangement for adapting the performance of a heater to the actual heat requirement
DE102006041346A1 (en) * 2006-09-01 2008-03-20 Wilo Ag Method for carrying out a pipe network analysis of a pipe network

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507247A1 (en) * 1995-03-02 1996-09-05 Baunach Hans Georg Method and device for hydraulically optimized regulation of the flow temperature
DE10044734C2 (en) * 1999-09-15 2003-11-06 Bosch Gmbh Robert Arrangement for adapting the performance of a heater to the actual heat requirement
DE102006041346A1 (en) * 2006-09-01 2008-03-20 Wilo Ag Method for carrying out a pipe network analysis of a pipe network

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