EP1855060A2 - Method for degasification and/or pressure maintenance in a closed water cycle - Google Patents

Method for degasification and/or pressure maintenance in a closed water cycle Download PDF

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Publication number
EP1855060A2
EP1855060A2 EP07006001A EP07006001A EP1855060A2 EP 1855060 A2 EP1855060 A2 EP 1855060A2 EP 07006001 A EP07006001 A EP 07006001A EP 07006001 A EP07006001 A EP 07006001A EP 1855060 A2 EP1855060 A2 EP 1855060A2
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EP
European Patent Office
Prior art keywords
container
water
valve
inlet
pressure
Prior art date
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Granted
Application number
EP07006001A
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German (de)
French (fr)
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EP1855060A3 (en
EP1855060B1 (en
Inventor
Matthias Feld
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REFLEX WINKELMANN GmbH
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Reflex Winkelmann & Co KG GmbH
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Priority to SI200732061T priority Critical patent/SI1855060T1/en
Priority to PL07006001T priority patent/PL1855060T3/en
Publication of EP1855060A2 publication Critical patent/EP1855060A2/en
Publication of EP1855060A3 publication Critical patent/EP1855060A3/en
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Publication of EP1855060B1 publication Critical patent/EP1855060B1/en
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    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • 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
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting arrangements
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/04—Hot-water central heating systems with the water under high pressure
    • F24D3/06—Arrangements or devices for maintaining high pressure
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1016—Tanks having a bladder

Definitions

  • the invention relates to a method for degassing and / or pressure maintenance in a closed water cycle with at least one container for degassing and / or pressure maintenance, which is supplied via at least one inlet water from the closed water cycle and discharged from which at least one drain water in the closed water cycle is, wherein the promotion of water from the container into the water cycle by at least one arranged in the flow, connected to a control pump, wherein the control in addition to the at least one pump controls a valve provided in the inlet controls.
  • An apparatus of the applicant for carrying out such a method for pressure maintenance has a system pressure control and at least one water collecting container. If the system pressure falls below a set target pressure, at least one pump will start up and pump water from a catch tank into the closed water circuit until a pre-set switch-off pressure is reached. If, on the other hand, the system pressure rises, at least one overflow valve opens in the inlet to the tank and water from the system is directed into the catch tank. This overflow valve is usually formed by a solenoid valve. If in addition a make-up is provided, falls below a predetermined filling level levels in the collecting container via a Nachspeisemagnetventil water fed into the collecting container up to an upper predetermined level state.
  • a device described above is in principle also suitable for degassing, this degassing takes place via a pressure release in the pressureless collecting container.
  • the operating principle of such a degassing is in a special embodiment in the document EP 0 933 109 B1 the applicant described.
  • the pump is started to pump water out of the container into the water circuit and the shut-off element designed as a solenoid valve is opened by the controller.
  • the suction process creates a negative pressure in the container into which the water to be degassed is preferably sprayed, whereby the degassing takes place.
  • the delivery rate of the pump is also correspondingly different, and that is according to the characteristic, the flow rate is smaller, the greater the system pressure.
  • the solenoid valve upstream of the degassing vessel behaves exactly opposite, ie the greater the system pressure, the greater the overflow quantity.
  • a throttle or the like is arranged in front of the solenoid valve. During commissioning, this throttle is adjusted so that the pump delivery rate matches the overflow rate of the solenoid valve (hydraulic balancing).
  • a disadvantage of this known method is that repeated at every pressure change of the hydraulic balance must become. Furthermore, any contamination or the like in the inlet to the container has a negative effect on the hydraulic balance.
  • solenoid valves are susceptible to contamination due to their structure. Furthermore, solenoid valves can generate pressure shocks by rapid opening and closing, which is also undesirable.
  • the object of the invention is to improve a generic method so that the required for carrying out the process structural design and the scheme is simplified.
  • This object is achieved according to the invention in a method of the type described, in that a control valve operated by an electric motor is used as the valve, which is controlled continuously by the controller as a function of the system pressure.
  • an electromotive operated control valve which is controlled continuously by the controller, i. Depending on the system pressure, the electromotive-operated control valve always automatically moves to the optimum position via the control.
  • the electromotive-operated control valve When commissioning a device for carrying out the method thus no throttles or the like need to be set, as can be completely dispensed with a throttle. It is only the control of the set pressure of the system specified. Pressure surges in the system are avoided because the electromotive operated control valve slowly closes and opens.
  • Electromotive-operated control valves such as electric motor-operated ball valves are basically for use in pipelines, for example DE 44 25 698 B4 known.
  • an electric motor operated ball valve is used as a control valve.
  • Such an electric motor operated ball valve works independently of contaminants, as they usually occur in heating circuits, i.
  • Such a ball valve is also suitable for dirty media.
  • closed water circuit may be provided in an embodiment that in the inlet of the device two parallel electric motor-operated control valves and the flow two parallel pumps are used.
  • the container is used both for degassing and for pressure maintenance, but alternatively it can also be provided that a container for degassing and another container are used for pressure maintenance, preferably both containers connected via a common electric motor-operated control valve are.
  • a device for pressure maintenance and / or degassing in a closed water cycle has for connection to the water cycle, not shown, which may be, for example, a heating circuit, an inlet 1 and a drain 2.
  • the inlet 1 opens into at least one container 3 for degassing and / or pressure maintenance.
  • the drain 2 is also connected.
  • the device has an electronic control generally designated 4, which is connected in the illustrated embodiment via different control lines with different system components.
  • a pressure sensor 5 is arranged, which is connected via a control line 5a to the controller 4.
  • an electromotive operated control valve preferably a ball valve 6, is arranged, whose electric motor 7 is connected via a control line 7a to the controller 4.
  • controller 4 is connected via a control line 8a to a pump 8 in the outlet 2.
  • container 3 may be equipped with a level control sensor 9, which is connected via a control line 9a to the controller 4.
  • a strainer 10 and downstream of the pump 8 in the process 2 a check valve 11 is provided in the inlet 1 preferably before the electric motor-operated control valve 6, a strainer 10 and downstream of the pump 8 in the process 2, a check valve 11 is provided in the inlet 1 preferably before the electric motor-operated control valve 6, a strainer 10 and downstream of the pump 8 in the process 2, a check valve 11 is provided in the inlet 1 preferably before the electric motor-operated control valve 6, a check valve 11 is provided.
  • 2 compensators 12 are arranged both in the inlet 1 and in the drain.
  • the container 3 in the interior of a water-forming membrane 15, which is provided on the upper side with a vent opening 13.
  • the container interior surrounding the membrane 15 communicates via a vent 14 with the environment and is thus pressureless.
  • a make-up line not shown, open, which allows a suitable valve a Nachspeisung of water when it is determined via the level control sensor 9 that the level has dropped below the membrane 15 of the container 3 below a predetermined level.
  • a transfer electromotive operated control valve 6 Serving as a transfer electromotive operated control valve 6 is continuously controlled by the controller 4 via a signal, such as a 0-10 volt signal, in which case the signal strength 0 volts a closed position of the control valve 6 and the maximum signal of 10 volts of a fully open position of the control valve 6 corresponds.
  • the electromotive operated control valve 6 is always driven via the controller 4 in the optimum open position. In this case, the control valve 6 operates independently of contamination, during commissioning, only the target pressure for the controller 4 must be specified.
  • the device can also be used for degassing by a pressure reduction is formed by appropriate control of pump 8 and electromotive operated control valve 6 in the container 3 and the water space forming membrane 15, through which the gases contained in the water are dissolved from the water and gaseous are discharged from the container 3 via the vent opening 13, as is basically known.
  • FIG. 2 shows a second embodiment of a device represented in which the same reference numerals as in Figure 1 are shown.
  • two electromotively operated control valves 6 are arranged in the inlet 1 in parallel and are each connected to the control 4 via control lines 6a.
  • the device may also have two containers 3, one preferably for pressure maintenance and the other only for degassing.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Physical Water Treatments (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The method involves providing a container (3), which supplies water from a closed water circulation via an inlet (1), where the water in closed water-cycle is discharged via an outlet. The delivery of water from the container takes place in the water circulation via a pump (8) that is connected with a controller (4) and arranged in the outlet. The controller controls an electrically operated control valve (6) that is provided in the inlet adjacent to the pump, where the valve is constantly controlled by the controller. A ball valve is utilized as the control valve.

Description

Die Erfindung betrifft ein Verfahren zur Entgasung und/oder Druckhaltung in einem geschlossenen Wasserkreislauf mit wenigstens einem Behälter zur Entgasung und/oder Druckhaltung, welchem über wenigstens einen Zulauf Wasser aus dem geschlossenen Wasserkreislauf zugeführt und aus welchem über wenigstens einen Ablauf Wasser in den geschlossenen Wasserkreislauf abgeführt wird, wobei die Förderung von Wasser aus dem Behälter in den Wasserkreislauf durch wenigstens eine im Ablauf angeordnete, mit einer Steuerung verbundene Pumpe erfolgt, wobei die Steuerung neben der wenigstens einen Pumpe ein im Zulauf vorgesehenes Ventil ansteuert.The invention relates to a method for degassing and / or pressure maintenance in a closed water cycle with at least one container for degassing and / or pressure maintenance, which is supplied via at least one inlet water from the closed water cycle and discharged from which at least one drain water in the closed water cycle is, wherein the promotion of water from the container into the water cycle by at least one arranged in the flow, connected to a control pump, wherein the control in addition to the at least one pump controls a valve provided in the inlet controls.

Beim Betrieb von Anlagen mit geschlossenen Wasserkreisläufen, wie Heiz- oder Kühlkreisläufen, sind Druck- und Flüssigkeitsverluste sowie das Eindringen von Gasen in den Flüssigkeitskreislauf weitgehend unvermeidlich.When operating systems with closed water circuits, such as heating or cooling circuits, pressure and fluid losses and the penetration of gases into the fluid circuit are largely unavoidable.

Um diesen Problemen abzuhelfen, sind gattungsgemäße Verfahren bekannt, die eine Entgasung und/oder eine Druckhaltung im geschlossenen Wasserkreislauf gewährleisten, wobei optional auch eine automatische Wassernachspeisung vorgesehen sein kann. Eine Vorrichtung der Anmelderin zur Durchführung eines solches Verfahrens zur Druckhaltung weist eine Systemdruckregelung und wenigstens einen Wasserauffangbehälter auf. Fällt der Systemdruck unter einen eingestellten Solldruck, läuft wenigstens eine Pumpe an und fördert Wasser aus einem Auffangbehälter in den geschlossenen Wasserkreislauf, bis ein voreingestellter Ausschaltdruck erreicht wird. Steigt dagegen der Systemdruck, öffnet wenigstens ein Überströmventil im Zulauf zum Behälter und Wasser aus dem System wird in den Auffangbehälter geleitet. Dieses Überströmventil ist üblicherweise von einem Magnetventil gebildet. Wenn zusätzlich auch eine Nachspeisung vorgesehen ist, wird beim Unterschreiten eines vorgegebenen Füllstandsniveaus im Auffangbehälter über ein Nachspeisemagnetventil Wasser in den Auffangbehälter bis zu einem oberen vorgegebenen Niveaustand nachgespeist.In order to remedy these problems, generic methods are known which ensure degassing and / or pressure maintenance in the closed water cycle, whereby optionally an automatic water supply can also be provided. An apparatus of the applicant for carrying out such a method for pressure maintenance has a system pressure control and at least one water collecting container. If the system pressure falls below a set target pressure, at least one pump will start up and pump water from a catch tank into the closed water circuit until a pre-set switch-off pressure is reached. If, on the other hand, the system pressure rises, at least one overflow valve opens in the inlet to the tank and water from the system is directed into the catch tank. This overflow valve is usually formed by a solenoid valve. If in addition a make-up is provided, falls below a predetermined filling level levels in the collecting container via a Nachspeisemagnetventil water fed into the collecting container up to an upper predetermined level state.

Eine vorbeschriebene Vorrichtung ist grundsätzlich auch zur Entgasung geeignet, diese Entgasung erfolgt über eine Druckentspannung im drucklosen Auffangbehälter. Das Wirkprinzip einer solchen Entgasung ist in einer speziellen Ausgestaltung in der Druckschrift EP 0 933 109 B1 der Anmelderin beschrieben. Bei der Entgasung wird die Pumpe zur Förderung von Wasser aus dem Behälter in den Wasserkreislauf gestartet und das als Magnetventil ausgebildete Absperrelement von der Steuerung geöffnet. Durch den Absaugvorgang entsteht im Behälter ein Unterdruck, in den das zu entgasende Wasser vorzugsweise versprüht wird, wodurch die Entgasung erfolgt. Da jedes System, d.h. jeder geschlossene Wasserkreislauf, an den eine solche Entgasungsvorrichtung angeschlossen wird, einen unterschiedlichen Druck aufweist, ist die Fördermenge der Pumpe auch entsprechend unterschiedlich, und zwar ist entsprechend der Kennlinie die Fördermenge umso kleiner, je größer der Systemdruck ist. Das dem Entgasungsbehälter vorgeschaltete Magnetventil verhält sich demgegenüber genau entgegengesetzt, d.h. je größer der Systemdruck ist, umso größer ist die Überströmmenge. Um den Systemdruck während der Entgasung konstant zu halten und um ein Takten zu vermeiden, ist deshalb vor dem Magnetventil eine Drossel oder ähnliches angeordnet. Diese Drossel wird bei der Inbetriebnahme so eingestellt, dass die Pumpenförderleistung mit der Überströmmenge des Magnetventiles übereinstimmt (hydraulischer Abgleich).A device described above is in principle also suitable for degassing, this degassing takes place via a pressure release in the pressureless collecting container. The operating principle of such a degassing is in a special embodiment in the document EP 0 933 109 B1 the applicant described. During degassing, the pump is started to pump water out of the container into the water circuit and the shut-off element designed as a solenoid valve is opened by the controller. The suction process creates a negative pressure in the container into which the water to be degassed is preferably sprayed, whereby the degassing takes place. Since each system, ie each closed water cycle, to which such a degassing device is connected, has a different pressure, the delivery rate of the pump is also correspondingly different, and that is according to the characteristic, the flow rate is smaller, the greater the system pressure. The solenoid valve upstream of the degassing vessel, by contrast, behaves exactly opposite, ie the greater the system pressure, the greater the overflow quantity. In order to keep the system pressure constant during degassing and to avoid clocking, therefore, a throttle or the like is arranged in front of the solenoid valve. During commissioning, this throttle is adjusted so that the pump delivery rate matches the overflow rate of the solenoid valve (hydraulic balancing).

Von Nachteil bei diesem bekannten Verfahren ist, dass bei jeder Druckveränderung der hydraulische Abgleich wiederholt werden muss. Ferner wirkt sich jede Verschmutzung oder ähnliches im Zulauf zum Behälter negativ auf den hydraulischen Abgleich aus. Außerdem sind Magnetventile aufgrund ihres Aufbaus bei Verschmutzung anfällig. Ferner können Magnetventile Druckschläge durch schnelles Öffnen und Schließen erzeugen, was ebenfalls unerwünscht ist.A disadvantage of this known method is that repeated at every pressure change of the hydraulic balance must become. Furthermore, any contamination or the like in the inlet to the container has a negative effect on the hydraulic balance. In addition, solenoid valves are susceptible to contamination due to their structure. Furthermore, solenoid valves can generate pressure shocks by rapid opening and closing, which is also undesirable.

Aufgabe der Erfindung ist es, ein gattungsgemäßes Verfahren so zu verbessern, dass der zur Durchführung des Verfahrens erforderliche konstruktive Aufbau und die Regelung vereinfacht wird.The object of the invention is to improve a generic method so that the required for carrying out the process structural design and the scheme is simplified.

Diese Aufgabe wird bei einem Verfahren der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, dass als Ventil ein elektromotorisch betriebenes Regelventil verwendet wird, welches von der Steuerung in Abhängigkeit vom Systemdruck stetig geregelt wird.This object is achieved according to the invention in a method of the type described, in that a control valve operated by an electric motor is used as the valve, which is controlled continuously by the controller as a function of the system pressure.

Beim erfindungsgemäßen Verfahren wird somit ein elektromotorisch betriebenes Regelventil eingesetzt, das von der Steuerung stetig geregelt wird, d.h. über die Steuerung wird das elektromotorisch betriebene Regelventil je nach Systemdruck immer selbsttätig in die optimale Stellung gefahren. Bei der Inbetriebnahme einer Vorrichtung zur Durchführung des Verfahrens brauchen somit keine Drosseln oder ähnliches eingestellt zu werden, da auf eine Drossel vollständig verzichtet werden kann. Es wird lediglich der Steuerung der Solldruck des Systems vorgegeben. Druckschläge im System werden vermieden, da das elektromotorisch betriebene Regelventil langsam schließt und öffnet.In the method according to the invention thus an electromotive operated control valve is used, which is controlled continuously by the controller, i. Depending on the system pressure, the electromotive-operated control valve always automatically moves to the optimum position via the control. When commissioning a device for carrying out the method thus no throttles or the like need to be set, as can be completely dispensed with a throttle. It is only the control of the set pressure of the system specified. Pressure surges in the system are avoided because the electromotive operated control valve slowly closes and opens.

Elektromotorisch betriebene Regelventile, beispielsweise elektromotorisch betriebene Kugelhähne, sind zum Einsatz in Rohrleitungen grundsätzlich z.B. aus DE 44 25 698 B4 bekannt.Electromotive-operated control valves, such as electric motor-operated ball valves are basically for use in pipelines, for example DE 44 25 698 B4 known.

Besonders bevorzugt ist vorgesehen, dass als Regelventil ein elektromotorisch betriebener Kugelhahn verwendet wird. Ein solcher elektromotorisch betriebener Kugelhahn arbeitet unabhängig von Verschmutzungen, wie sie üblicherweise in Heizungskreisläufen auftreten, d.h. auch für schmutzige Medien ist ein solcher Kugelhahn geeignet.It is particularly preferred that an electric motor operated ball valve is used as a control valve. Such an electric motor operated ball valve works independently of contaminants, as they usually occur in heating circuits, i. Such a ball valve is also suitable for dirty media.

Je nach Größe des geschlossenen Wasserkreislaufes kann in Ausgestaltung vorgesehen sein, dass im Zulauf der Vorrichtung zwei parallel angeordnete elektromotorisch betriebene Regelventile und im Ablauf zwei parallel angeordnete Pumpen eingesetzt werden.Depending on the size of the closed water circuit may be provided in an embodiment that in the inlet of the device two parallel electric motor-operated control valves and the flow two parallel pumps are used.

Es kann vorgesehen sein, dass der Behälter sowohl zur Entgasung als auch zur Druckhaltung eingesetzt wird, alternativ kann aber auch vorgesehen sein, dass ein Behälter zur Entgasung und ein weiterer Behälter zur Druckhaltung eingesetzt werden, wobei bevorzugt beide Behälter über ein gemeinsames elektromotorisch betriebenes Regelventil angeschlossen sind.It can be provided that the container is used both for degassing and for pressure maintenance, but alternatively it can also be provided that a container for degassing and another container are used for pressure maintenance, preferably both containers connected via a common electric motor-operated control valve are.

In Ausgestaltung kann vorgesehen sein, dass in jedem Behälterzulauf jeweils ein elektromotorisch betriebenes Regelventil eingesetzt wird.In an embodiment, it can be provided that in each container inlet in each case an electromotive operated control valve is used.

Die Erfindung ist nachstehend anhand der Zeichnung beispielhaft näher erläutert. Diese zeigt in:

Fig. 1
eine Prinzipdarstellung einer Vorrichtung zur Durchführung des Verfahrens nach einer ersten Ausgestaltung und
Fig. 2
eine Vorrichtung nach einer zweiten Ausgestaltung.
The invention is explained in more detail below by way of example with reference to the drawing. This shows in:
Fig. 1
a schematic diagram of an apparatus for performing the method according to a first embodiment and
Fig. 2
a device according to a second embodiment.

Eine Vorrichtung zur Druckhaltung und/oder Entgasung in einem geschlossenen Wasserkreislauf weist zum Anschluss an den nicht dargestellten Wasserkreislauf, bei dem es sich beispielsweise um einen Heizkreislauf handeln kann, einen Zulauf 1 und einen Ablauf 2 auf. Der Zulauf 1 mündet in wenigstens einen Behälter 3 zur Entgasung und/oder Druckhaltung. An den Behälter 3 ist außerdem der Ablauf 2 angeschlossen.A device for pressure maintenance and / or degassing in a closed water cycle has for connection to the water cycle, not shown, which may be, for example, a heating circuit, an inlet 1 and a drain 2. The inlet 1 opens into at least one container 3 for degassing and / or pressure maintenance. To the container 3, the drain 2 is also connected.

Die Vorrichtung weist eine allgemein mit 4 bezeichnete elektronische Steuerung auf, die beim dargestellten Ausführungsbeispiel über verschiedene Steuerleitungen mit verschiedenen Systemkomponenten verbunden ist. So ist zunächst im Zulauf 1 ein Drucksensor 5 angeordnet, der über eine Steuerleitung 5a mit der Steuerung 4 verbunden ist. Ferner ist im Zulauf 1 stromabwärts des Drucksensors 5 ein elektromotorisch betriebenes Regelventil, vorzugsweise ein Kugelhahn 6, angeordnet, dessen Elektromotor 7 über eine Steuerleitung 7a mit der Steuerung 4 verbunden ist.The device has an electronic control generally designated 4, which is connected in the illustrated embodiment via different control lines with different system components. Thus, initially in the inlet 1, a pressure sensor 5 is arranged, which is connected via a control line 5a to the controller 4. Further, in the inlet 1 downstream of the pressure sensor 5, an electromotive operated control valve, preferably a ball valve 6, is arranged, whose electric motor 7 is connected via a control line 7a to the controller 4.

Des Weiteren ist die Steuerung 4 über eine Steuerleitung 8a mit einer Pumpe 8 im Ablauf 2 verbunden. Schließlich kann der Behälter 3 mit einem Füllstandskontrollsensor 9 ausgerüstet sein, welcher über eine Steuerleitung 9a mit der Steuerung 4 verbunden ist.Furthermore, the controller 4 is connected via a control line 8a to a pump 8 in the outlet 2. Finally, the container 3 may be equipped with a level control sensor 9, which is connected via a control line 9a to the controller 4.

Ferner ist im Zulauf 1 vorzugsweise vor dem elektromotorisch betriebenen Regelventil 6 ein Schmutzfänger 10 und stromabwärts der Pumpe 8 im Ablauf 2 eine Rückschlagklappe 11 vorgesehen. Außerdem sind sowohl im Zulauf 1 als auch im Ablauf 2 Kompensatoren 12 angeordnet.Further, in the inlet 1 preferably before the electric motor-operated control valve 6, a strainer 10 and downstream of the pump 8 in the process 2, a check valve 11 is provided. In addition, 2 compensators 12 are arranged both in the inlet 1 and in the drain.

Ferner weist der Behälter 3 im Inneren eine den Wasserraum bildende Membran 15 auf, die oberseitig mit einer Entlüftungsöffnung 13 versehen ist. Der die Membran 15 umgebende Behälterinnenraum steht über eine Entlüftung 14 mit der Umgebung in Verbindung und ist somit drucklos. In den Zulauf 1 kann eine nicht dargestellte Nachspeiseleitung münden, die über ein geeignetes Ventil eine Nachspeisung von Wasser ermöglicht, wenn über den Füllstandskontrollsensor 9 festgestellt wird, dass der Füllstand innerhalb der Membran 15 des Behälters 3 unter ein vorgegebenes Niveau abgesunken ist.Furthermore, the container 3 in the interior of a water-forming membrane 15, which is provided on the upper side with a vent opening 13. The container interior surrounding the membrane 15 communicates via a vent 14 with the environment and is thus pressureless. In the inlet 1, a make-up line, not shown, open, which allows a suitable valve a Nachspeisung of water when it is determined via the level control sensor 9 that the level has dropped below the membrane 15 of the container 3 below a predetermined level.

Das als Überströmer dienende elektromotorisch betriebene Regelventil 6 wird von der Steuerung 4 stetig über ein Signal geregelt, beispielsweise ein 0-10 Volt-Signal, wobei dann die Signalstärke 0 Volt einer geschlossenen Position des Regelventiles 6 und das Maximalsignal von 10 Volt einer voll geöffneten Position des Regelventiles 6 entspricht. Je nach dem Druck im angeschlossenen System wird das elektromotorisch betriebene Regelventil 6 über die Steuerung 4 immer in die optimale Öffnungsstellung gefahren. Dabei arbeitet das Regelventil 6 unabhängig von Verschmutzungen, bei der Inbetriebnahme muss lediglich der Solldruck für die Steuerung 4 vorgegeben werden.Serving as a transfer electromotive operated control valve 6 is continuously controlled by the controller 4 via a signal, such as a 0-10 volt signal, in which case the signal strength 0 volts a closed position of the control valve 6 and the maximum signal of 10 volts of a fully open position of the control valve 6 corresponds. Depending on the pressure in the connected system, the electromotive operated control valve 6 is always driven via the controller 4 in the optimum open position. In this case, the control valve 6 operates independently of contamination, during commissioning, only the target pressure for the controller 4 must be specified.

Die Vorrichtung kann auch zur Entgasung genutzt werden, indem durch entsprechende Regelung von Pumpe 8 und elektromotorisch betriebenem Regelventil 6 im Behälter 3 bzw. der den Wasserraum bildenden Membran 15 eine Druckabsenkung entsteht, durch den die im Wasser enthaltenen Gase aus dem Wasser gelöst werden und gasförmig aus dem Behälter 3 über die Entlüftungsöffnung 13 abgegeben werden, wie dies grundsätzlich bekannt ist.The device can also be used for degassing by a pressure reduction is formed by appropriate control of pump 8 and electromotive operated control valve 6 in the container 3 and the water space forming membrane 15, through which the gases contained in the water are dissolved from the water and gaseous are discharged from the container 3 via the vent opening 13, as is basically known.

In Figur 2 ist eine zweite Ausführungsform einer Vorrichtung dargestellt, in welcher dieselben Bezugszeichen wie in Figur 1 gezeigt sind. Im Unterschied zur Ausführungsform nach Figur 1 sind im Zulauf 1 parallel zwei elektromotorisch betriebene Regelventile 6 angeordnet, welche jeweils über Steuerleitungen 6a mit der Steuerung 4 verbunden sind.FIG. 2 shows a second embodiment of a device represented in which the same reference numerals as in Figure 1 are shown. In contrast to the embodiment according to FIG. 1, two electromotively operated control valves 6 are arranged in the inlet 1 in parallel and are each connected to the control 4 via control lines 6a.

Im Ablauf 2 sind parallel zwei Pumpen 8 angeordnet, die jeweils über Steuerleitungen 8a mit der Steuerung verbunden sind. Entsprechend sind den Regelventilen 6 jeweils ein eigener Schmutzfänger 10 und den Pumpen 8 jeweils eine eigene Rückschlagklappe 11 zugeordnet.In run 2, two pumps 8 are arranged in parallel, which are each connected via control lines 8a to the controller. Accordingly, the control valves 6 each own a separate strainer 10 and the pumps 8 each have their own non-return valve 11 assigned.

Natürlich ist die Erfindung nicht auf die dargestellten Ausführungsbeispiele beschränkt. Weitere Ausgestaltungen sind möglich, ohne den Grundgedanken zu verlassen. So kann die Vorrichtung auch zwei Behälter 3 aufweisen, wobei der eine vorzugsweise zur Druckhaltung und der andere nur zur Entgasung dient.Of course, the invention is not limited to the illustrated embodiments. Further embodiments are possible without departing from the basic idea. Thus, the device may also have two containers 3, one preferably for pressure maintenance and the other only for degassing.

Claims (5)

Verfahren zur Entgasung und/oder Druckhaltung in einem geschlossenen Wasserkreislauf mit wenigstens einem Behälter zur Entgasung und/oder Druckhaltung, welchem über wenigstens einen Zulauf Wasser aus dem geschlossenen Wasserkreislauf zugeführt und aus welchem über wenigstens einen Ablauf Wasser in den geschlossenen Wasserkreislauf abgeführt wird, wobei die Förderung von Wasser aus dem Behälter in den Wasserkreislauf durch wenigstens eine im Ablauf angeordnete, mit einer Steuerung verbundene Pumpe erfolgt, wobei die Steuerung neben der wenigstens einen Pumpe ein im Zulauf vorgesehenes Ventil ansteuert,
dadurch gekennzeichnet,
dass als Ventil ein elektromotorisch betriebenes Regelventil (6) verwendet wird, welches von der Steuerung (4) in Abhängigkeit vom Systemdruck stetig geregelt wird.A process for degassing and / or pressure maintenance in a closed water cycle with at least one container for degassing and / or pressure maintenance, which is supplied via at least one inlet water from the closed water cycle and from which at least one drain water is discharged into the closed water cycle, wherein the Conveying water from the container into the water cycle by means of at least one pump arranged in the outlet and connected to a controller, the controller actuating a valve provided in the inlet in addition to the at least one pump,
characterized,
in that an electromotively operated control valve (6) is used as the valve, which is controlled continuously by the controller (4) as a function of the system pressure. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
dass als Regelventil (6) ein elektromotorisch betriebener Kugelhahn verwendet wird.Method according to claim 1,
characterized,
in that an electromotively operated ball valve is used as the control valve (6). Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass im Zulauf (1) zwei parallel angeordnete elektromotorisch betriebene Regelventile (6) und im Ablauf (2) zwei parallel angeordnete Pumpen (8) eingesetzt werden.Method according to claim 1 or 2,
characterized,
that in the inlet (1) two parallel electromotive operated control valves (6) and in the outlet (2) two parallel pumps (8) are used. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass ein Behälter (3) zur Entgasung und ein weiterer Behälter zur Druckhaltung eingesetzt werden.Method according to claim 1 or 2,
characterized,
that a container (3) for degassing and another container for pressure maintenance are used. Verfahren nach Anspruch 4,
dadurch gekennzeichnet,
dass in jedem Behälterzulauf jeweils ein elektromotorisch betriebenes Regelventil (6) eingesetzt wird.Method according to claim 4,
characterized,
that in each container inlet in each case an electric motor-operated control valve (6) is used.
EP07006001.7A 2006-05-11 2007-03-23 Method for degasification and/or pressure maintenance in a closed water cycle Active EP1855060B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200732061T SI1855060T1 (en) 2006-05-11 2007-03-23 Method for degasification and/or pressure maintenance in a closed water cycle
PL07006001T PL1855060T3 (en) 2006-05-11 2007-03-23 Method for degasification and/or pressure maintenance in a closed water cycle

Applications Claiming Priority (1)

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DE102006021916A DE102006021916A1 (en) 2006-05-11 2006-05-11 Device for degasification and / or pressure maintenance in a closed water cycle

Publications (3)

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EP1855060A2 true EP1855060A2 (en) 2007-11-14
EP1855060A3 EP1855060A3 (en) 2010-06-02
EP1855060B1 EP1855060B1 (en) 2018-09-12

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EP (1) EP1855060B1 (en)
DE (2) DE102006021916A1 (en)
DK (1) DK1855060T3 (en)
ES (1) ES2694500T3 (en)
HU (1) HUE039867T2 (en)
LT (1) LT1855060T (en)
PL (1) PL1855060T3 (en)
PT (1) PT1855060T (en)
SI (1) SI1855060T1 (en)
TR (1) TR201816345T4 (en)

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WO2009131450A2 (en) * 2008-04-24 2009-10-29 Flamco B.V. Heating system with expansion device
DE102010055158A1 (en) 2010-12-18 2012-06-21 Industrieelektronik Brandenburg GmbH Method for regulating pressure in hydraulic and pneumatic systems used in hydraulic power plant, involves determining error value based on difference between actual and target pressure values of hydraulic and pneumatic systems
WO2011110946A3 (en) * 2010-03-11 2013-08-08 Schweyher, Holger Heat-exchange circuit
WO2023203029A1 (en) * 2022-04-20 2023-10-26 Grundfos Holding A/S A method and system for degassing liquid

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WO2011110946A3 (en) * 2010-03-11 2013-08-08 Schweyher, Holger Heat-exchange circuit
DE102010055158A1 (en) 2010-12-18 2012-06-21 Industrieelektronik Brandenburg GmbH Method for regulating pressure in hydraulic and pneumatic systems used in hydraulic power plant, involves determining error value based on difference between actual and target pressure values of hydraulic and pneumatic systems
WO2023203029A1 (en) * 2022-04-20 2023-10-26 Grundfos Holding A/S A method and system for degassing liquid

Also Published As

Publication number Publication date
TR201816345T4 (en) 2018-11-21
DE202006020835U1 (en) 2010-06-10
DE102006021916A1 (en) 2007-11-22
EP1855060A3 (en) 2010-06-02
DK1855060T3 (en) 2018-11-26
PL1855060T3 (en) 2019-01-31
LT1855060T (en) 2018-11-26
HUE039867T2 (en) 2019-02-28
ES2694500T3 (en) 2018-12-21
SI1855060T1 (en) 2018-12-31
EP1855060B1 (en) 2018-09-12
PT1855060T (en) 2018-11-22

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