EP2182294B1 - Pressure expansion vessel - Google Patents
Pressure expansion vessel Download PDFInfo
- Publication number
- EP2182294B1 EP2182294B1 EP08018779.2A EP08018779A EP2182294B1 EP 2182294 B1 EP2182294 B1 EP 2182294B1 EP 08018779 A EP08018779 A EP 08018779A EP 2182294 B1 EP2182294 B1 EP 2182294B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- expansion vessel
- pressure expansion
- connection piece
- connecting piece
- ring
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 6
- 244000025254 Cannabis sativa Species 0.000 description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 3
- 235000009120 camo Nutrition 0.000 description 3
- 235000005607 chanvre indien Nutrition 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000011487 hemp Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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
- 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
- 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 pressure expansion vessel for connection to a pipeline network with a partitioned by a separator into a water and a gas chamber interior, wherein the water space via a connecting piece pressure-tight with a tubular fitting of the pipe network is connectable.
- expansion vessels serve to accommodate volume changes, for example, by pressure-dependent switching on and off of pumps, by pressure shock absorbers or temperature-related in closed fluid circuits that occur in water supply systems or heating circuits.
- the separating element is formed by an elastic membrane, which separate the water and the gas chamber pressure-tight from each other.
- the pipe network has a tubular shaped piece, which may be formed in the simplest embodiment of a arranged in the pipe network tee.
- This tubular fitting is usually provided with an internal thread, in which the connecting piece of the pressure expansion vessel, which has an external thread in such a configuration, is screwed.
- the pipe network may also have a specially designed connection fitting, which in turn is equipped with a tubular fitting, in which the connection piece of the pressure expansion vessel can be screwed. It is obvious that a pressure-tight connection between the connecting piece of the pressure expansion vessel and the fitting of the pipe network must exist.
- the connecting piece of the expansion vessel is previously prepared by the fitter by hand with hemp or sealing tapes and then the connection piece is inserted into the fitting. This requires considerable experience of assembly personnel to ensure a tight connection. In addition, this type of seal is cumbersome and time consuming.
- Pressure expansion vessels of the type described above are, for example DE 101 05 393 C1 and DE 93 04 583 U1 known. These documents show the nature of the previous connection of a pressure expansion vessel to a pipeline network in various designs.
- a pressure expansion vessel in which a nut is screwed onto the connecting piece of the expansion vessel.
- This nut serves as a fastening means for a special holding device of the vessel, the connection of the connecting piece itself with a non-illustrated fitting of the pipe network is carried out in the conventional manner described above.
- the object of the invention is to improve a pressure expansion vessel so that a pressure-tight connection of the vessel to a pipeline network is substantially simplified.
- the connecting piece has a radially projecting annular projection which has a circumferential sealing surface on the side facing the tubular fitting of the conduit network, to which rests an annular sealing element arranged on the connecting piece.
- the connecting piece has a radially projecting annular projection, which forms or has a sealing surface on the side facing away from the vessel, against which an annular sealing element bears.
- the seal between the connecting piece of the pressure expansion vessel and the fitting of the conduit network is thus effected by the sealing element between the sealing surface of the annular projection and the end face of the tubular fitting of the conduit network and not, as in the prior art, between the threads of the connecting piece and the fitting. This design also improves the seal.
- the sealing surface is formed by a circumferential groove in which the annular sealing element is partially received.
- This embodiment is particularly suitable when using an O-ring seal. If, however, a flat gasket is used, the groove is not required.
- connection piece Since most fittings or tubular fittings are common piping equipped with an internal thread, it is preferably provided that the connection piece has an external thread and, accordingly, the fitting has a corresponding internal thread.
- the annular projection of the connection piece is formed by a screwed onto the connecting piece nut.
- the connection piece itself must then be compared to conventional ones Vessels are not changed, the annular projection of the connecting piece is formed by an additional nut, which is provided with a corresponding groove for receiving the sealing element.
- the nut can be arranged axially on the connecting piece in a suitable manner, which increases the variability, ie one and the same Druckausdehnungsgfäß with a predetermined length of connecting piece is suitable for different length-sized tubular fittings of different networks, as the axial distance between the nut and the vessel is changeable.
- the annular sealing element may in principle have any desired geometric cross-sectional shape, but is preferably an O-ring seal.
- the separating element is formed by a (elastic) membrane.
- FIG. 1 A pressure expansion vessel for connection to a mains network is in FIG. 1 generally designated 1.
- This pipeline network is a closed fluid circuit, eg a heating or service water system.
- the pressure expansion vessel in the illustrated embodiment, two approximately half-shell-like vessel halves 2, 3, which are pressure-tightly connected to each other.
- a graphically not shown serving as a separating element membrane, preferably made of an elastic plastic, which separates the vessel interior into a water space 4 and a gas space 5.
- a pressurized gas such as nitrogen, added, which is fed via a gas filling valve 6.
- the water chamber 4 is connected via a connecting piece 7 with the pipe network, not shown in connection.
- the connecting piece 7 is pressure and fluid tight connected to the vessel half 3, for example, welded.
- the connecting piece 7 is used for connection to a tubular fitting of the pipe network.
- This tubular shaped piece may be a simple T-piece, which is part of the piping network, but it may also be a connection fitting, which includes a tubular fitting, in which the connecting piece 7 is inserted.
- the connecting piece 7 has an external thread 8, the tubular fitting of the pipe network is then provided with a corresponding internal thread.
- the connecting piece 7 is screwed into the tubular fitting of the pipe network in a conventional manner.
- the connecting piece 7 has a radially projecting, annular projection 9, this annular projection 9 is formed in the illustrated embodiment of a screwed onto the connecting piece 7 nut.
- the annular projection 9 has, on the side facing away from the pressure expansion vessel 1 and the tubular fitting of the line network not facing side facing a sealing surface, which is formed in the embodiment of a circumferential groove 10.
- a sealing surface which is formed in the embodiment of a circumferential groove 10.
- an annular sealing element 11 is partially received, it is radially on the outside of a groove 10 limiting shoulder 12 and radially inwardly on the circumference of the connecting piece 7 at.
- the sealing element 11 may e.g. be formed by an O-ring seal.
- the connecting piece 7 is simply screwed into the tubular fitting of the pipe network, and indeed so far, until the axial end face 13 of the annular projection 9 rests against the opposite end face of the tubular fitting.
- the annular sealing member 11 is sealingly pressed into the forming gap, the sealing member 11 seals between the annular projection 9 and the end face of the tubular fitting.
- annular projection 9 as shown in the invention designed as a screw nut
- the axial arrangement of the annular projection 9 on the connecting piece 7 is variable.
- the groove 10 may also be missing and the annular projection 9 have a flat sealing surface.
Landscapes
- 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)
- Gasket Seals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
Die Erfindung betrifft ein Druckausdehnungsgefäß zum Anschließen an ein Leitungsnetz mit einem von einem Trennelement in einen Wasser- und einen Gasraum unterteilten Gefäßinnenraum, wobei der Wasserraum über einen Anschlussstutzen druckdicht mit einem rohrförmigen Formstück des Leitungsnetzes verbindbar ist.The invention relates to a pressure expansion vessel for connection to a pipeline network with a partitioned by a separator into a water and a gas chamber interior, wherein the water space via a connecting piece pressure-tight with a tubular fitting of the pipe network is connectable.
Derartige Ausdehnungsgefäße dienen zur Aufnahme von Volumenänderungen, beispielsweise durch druckabhängiges Einund Ausschalten von Pumpen, durch Druckschlagdämpfer oder auch temperaturbedingt in geschlossenen Flüssigkeitskreisläufen, die in Wasserversorgungssystemen oder Heizungskreisläufen auftreten. Bei den meisten Ausdehnungsgefäßen dieser Art ist dabei das Trennelement von einer elastischen Membran gebildet, welche den Wasser- und den Gasraum druckdicht voneinander trennen.Such expansion vessels serve to accommodate volume changes, for example, by pressure-dependent switching on and off of pumps, by pressure shock absorbers or temperature-related in closed fluid circuits that occur in water supply systems or heating circuits. In most expansion vessels of this type, the separating element is formed by an elastic membrane, which separate the water and the gas chamber pressure-tight from each other.
Zum Anschließen eines solchen Druckausdehnungsgefäßes an ein Leitungsnetz weist das Leitungsnetz ein rohrförmiges Formstück auf, das in der einfachsten Ausgestaltung von einem im Leitungsnetz angeordneten T-Stück gebildet sein kann. Dieses rohrförmige Formstück ist üblicherweise mit einem Innengewinde versehen, in welches der Anschlussstutzen des Druckausdehnungsgefäßes, der bei einer solchen Gestaltung ein Außengewinde aufweist, eingeschraubt wird. Anstelle solcher einfachen T-förmigen Formstücke kann das Leitungsnetz auch eine speziell gestaltete Anschlussarmatur aufweisen, die aber wiederum mit einem rohrförmigen Formstück ausgerüstet ist, in welche der Anschlussstutzen des Druckausdehnungsgefäßes eingeschraubt werden kann. Es ist offensichtlich, dass eine druckdichte Verbindung zwischen dem Anschlussstutzen des Druckausdehnungsgefäßes und dem Formstück des Leitungsnetzes bestehen muss. Dazu wird bisher der Anschlussstutzen des Ausdehnungsgefäßes vom Monteur von Hand mit Hanf- oder Dichtbändern vorbereitet und anschließend wird der Anschlussstutzen in das Formstück eingeführt. Dies erfordert eine erhebliche Erfahrung des Montagepersonals, um einen dichten Anschluss zu gewährleisten. Außerdem ist diese Art der Abdichtung umständlich und zeitaufwendig.To connect such a pressure expansion vessel to a mains network, the pipe network has a tubular shaped piece, which may be formed in the simplest embodiment of a arranged in the pipe network tee. This tubular fitting is usually provided with an internal thread, in which the connecting piece of the pressure expansion vessel, which has an external thread in such a configuration, is screwed. Instead of such simple T-shaped fittings, the pipe network may also have a specially designed connection fitting, which in turn is equipped with a tubular fitting, in which the connection piece of the pressure expansion vessel can be screwed. It is obvious that a pressure-tight connection between the connecting piece of the pressure expansion vessel and the fitting of the pipe network must exist. For this purpose, the connecting piece of the expansion vessel is previously prepared by the fitter by hand with hemp or sealing tapes and then the connection piece is inserted into the fitting. This requires considerable experience of assembly personnel to ensure a tight connection. In addition, this type of seal is cumbersome and time consuming.
Ein solches Druckausdehnungsgefäß gemäß dem Oberbegriff des Anspruchs 1 ist aus der Patentschrift
Druckausdehnungsgefäße der vorbeschriebenen Art sind z.B. aus
Aus
Aufgabe der Erfindung ist es, ein Druckausdehnungsgefäß so zu verbessern, dass ein druckdichter Anschluss des Gefäßes an ein Leitungsnetz wesentlich vereinfacht wird.The object of the invention is to improve a pressure expansion vessel so that a pressure-tight connection of the vessel to a pipeline network is substantially simplified.
Diese Aufgabe wird bei einem Druckausdehnungsgefäß der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, dass der Anschlussstutzen einen radial vorspringenden ringförmigen Ansatz aufweist, welcher auf der dem rohrförmigen Formstück des Leitungsnetzes zugewandten Seite eine umlaufende Dichtfläche aufweist, an welcher ein auf dem Anschlussstutzen angeordnetes ringförmiges Dichtelement anliegt.This object is achieved according to the invention in a pressure expansion vessel of the type described above, that the connecting piece has a radially projecting annular projection which has a circumferential sealing surface on the side facing the tubular fitting of the conduit network, to which rests an annular sealing element arranged on the connecting piece.
Es wird somit eine Lösung zur Verfügung gestellt, bei der das Druckausdehnungsgefäß bereits mit dem notwendigen Dichtmittel ausgerüstet ist, das Gefäß mit seinem Anschlussstutzen muss lediglich mit dem rohrförmigen Formstück des Leitungsnetzes verbunden werden, ohne dass es eines manuellen Aufbringens eines Hanf- oder Dichtbandes bedarf. Dazu weist der Anschlussstutzen einen radial vorspringenden ringförmigen Ansatz auf, der auf der dem Gefäß abgewandten Seite eine Dichtfläche bildet bzw. aufweist, an welcher ein ringförmiges Dichtelement anliegt. Die Abdichtung zwischen dem Anschlussstutzen des Druckausdehnungsgefäßes und dem Formstück des Leitungsnetzes erfolgt somit durch das Dichtelement zwischen der Dichtfläche des ringförmigen Ansatzes und der Stirnfläche des rohrförmigen Formstückes des Leitungsnetzes und nicht, wie beim Stand der Technik, zwischen den Gewindegängen des Anschlussstutzens und des Formstückes. Durch diese Gestaltung wird auch die Abdichtung verbessert.There is thus provided a solution in which the pressure expansion vessel already with the necessary Sealant is equipped, the vessel with its connection piece must only be connected to the tubular fitting of the pipe network, without the need for manual application of a hemp or sealing tape. For this purpose, the connecting piece has a radially projecting annular projection, which forms or has a sealing surface on the side facing away from the vessel, against which an annular sealing element bears. The seal between the connecting piece of the pressure expansion vessel and the fitting of the conduit network is thus effected by the sealing element between the sealing surface of the annular projection and the end face of the tubular fitting of the conduit network and not, as in the prior art, between the threads of the connecting piece and the fitting. This design also improves the seal.
In bevorzugter Ausgestaltung ist vorgesehen, dass die Dichtfläche von einer umlaufenden Nut gebildet ist, in welcher das ringförmige Dichtelement bereichsweise aufgenommen ist. Diese Ausgestaltung eignet sich insbesondere bei Einsatz einer O-Ringdichtung. Wird dagegen eine Flachdichtung verwendet, bedarf es der Nut nicht.In a preferred embodiment, it is provided that the sealing surface is formed by a circumferential groove in which the annular sealing element is partially received. This embodiment is particularly suitable when using an O-ring seal. If, however, a flat gasket is used, the groove is not required.
Da die meisten Anschlussstücke bzw. rohrförmigen Formstücke gängiger Leitungsnetze mit einem Innengewinde ausgerüstet sind, ist bevorzugt vorgesehen, dass der Anschlussstutzen ein Außengewinde und dementsprechend das Formstück ein korrespondierendes Innengewinde aufweist.Since most fittings or tubular fittings are common piping equipped with an internal thread, it is preferably provided that the connection piece has an external thread and, accordingly, the fitting has a corresponding internal thread.
Bei der Erfindung ist vorgesehen, dass der ringförmige Ansatz des Anschlussstutzens von einer auf den Anschlussstutzen aufgeschraubten Schraubmutter gebildet ist. Der Anschlussstutzen selbst muss dann gegenüber herkömmlichen Gefäßen nicht verändert werden, der ringförmige Ansatz des Anschlussstutzens wird von einer zusätzlichen Schraubmutter gebildet, die entsprechend mit einer Nut zur Aufnahme des Dichtelementes versehen ist. Je nach Einbauverhältnissen kann die Mutter in geeigneter Weise axial auf dem Anschlussstutzen angeordnet werden, was die Variabilität erhöht, d.h. ein und dasselbe Druckausdehnungsgfäß mit einer vorgegebenen Anschlussstutzenlänge ist für unterschiedlich längendimensionierte rohrförmige Formstücke verschiedener Leitungsnetze geeignet, da der axiale Abstand zwischen der Schraubmutter und dem Gefäß veränderbar ist.In the invention, it is provided that the annular projection of the connection piece is formed by a screwed onto the connecting piece nut. The connection piece itself must then be compared to conventional ones Vessels are not changed, the annular projection of the connecting piece is formed by an additional nut, which is provided with a corresponding groove for receiving the sealing element. Depending on the installation conditions, the nut can be arranged axially on the connecting piece in a suitable manner, which increases the variability, ie one and the same Druckausdehnungsgfäß with a predetermined length of connecting piece is suitable for different length-sized tubular fittings of different networks, as the axial distance between the nut and the vessel is changeable.
Das ringförmige Dichtelement kann prinzipiell jede beliebige geometrische Querschnittsform aufweisen, bevorzugt ist es aber eine O-Ringdichtung.The annular sealing element may in principle have any desired geometric cross-sectional shape, but is preferably an O-ring seal.
Ferner ist in an sich bekannter Weise vorgesehen, dass das Trennelement von einer (elastischen) Membran gebildet ist.Furthermore, it is provided in a manner known per se that the separating element is formed by a (elastic) membrane.
Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in
- Fig. 1
- eine Prinzipdarstellung eines Druckausdehnungsgefäßes und
- Fig. 2
- in vergrößerter Darstellung den erfindungsgemäß gestalteten Anschlussstutzen des Druckausdehnungsgefäßes nach
Figur 1 .
- Fig. 1
- a schematic diagram of a pressure expansion vessel and
- Fig. 2
- in an enlarged view of the inventively designed connecting piece of the pressure expansion vessel after
FIG. 1 ,
Ein Druckausdehnungsgefäß zum Anschließen an ein Leitungsnetz ist in
Der Wasserraum 4 steht über einen Anschlussstutzen 7 mit dem nicht dargestellten Leitungsnetz in Verbindung. Der Anschlussstutzen 7 ist druck- und fluiddicht mit der Gefäßhälfte 3 verbunden, beispielsweise angeschweißt. Der Anschlussstutzen 7 dient zur Verbindung mit einem rohrförmigen Formstück des Leitungsnetzes. Dieses rohrförmige Formstück kann ein einfaches T-Rohr-Stück sein, das Bestandteil des Leitungsnetzes ist, es kann aber auch eine Anschlussarmatur sein, die ein rohrförmiges Formstück beinhaltet, in welches der Anschlussstutzen 7 einführbar ist. Beim Ausführungsbeispiel weist der Anschlussstutzen 7 ein Außengewinde 8 auf, das rohrförmige Formstück des Leitungsnetzes ist dann mit einem korrespondierenden Innengewinde versehen.The water chamber 4 is connected via a connecting piece 7 with the pipe network, not shown in connection. The connecting piece 7 is pressure and fluid tight connected to the
Zum Verbinden des Druckausdehnungsgefäßes 1 mit dem Leitungsnetz wird in herkömmlicher Weise der Anschlussstutzen 7 in das rohrförmige Formstück des Leitungsnetzes eingeschraubt.To connect the pressure expansion vessel 1 with the pipe network, the connecting piece 7 is screwed into the tubular fitting of the pipe network in a conventional manner.
Wesentlich für die Erfindung ist nun die Gestaltung des Anschlussstutzens 7. Der Anschlussstutzen 7 weist einen radial vorspringenden, ringförmigen Ansatz 9 auf, dieser ringförmige Ansatz 9 ist beim dargestellten Ausführungsbeispiel von einer auf den Anschlussstutzen 7 aufgeschraubten Schraubmutter gebildet.Essential to the invention is now the design of the connecting piece 7. The connecting piece 7 has a radially projecting, annular projection 9, this annular projection 9 is formed in the illustrated embodiment of a screwed onto the connecting piece 7 nut.
Der ringförmige Ansatz 9 weist auf der dem Druckausdehnungsgefäß 1 abgewandten bzw. dem nicht dargestellten rohrförmigen Formstück des Leitungsnetztes zugewandten Seite eine Dichtfläche auf, die beim Ausführungsbeispiel von einer umlaufenden Nut 10 gebildet ist. In dieser Nut 10 ist ein ringförmiges Dichtelement 11 bereichsweise aufgenommen, es liegt radial außenseitig an einer die Nut 10 begrenzenden Schulter 12 und radial innenseitig am Umfang des Anschlussstutzens 7 an. Das Dichtelement 11 kann z.B. von einer O-Ringdichtung gebildet sein.The annular projection 9 has, on the side facing away from the pressure expansion vessel 1 and the tubular fitting of the line network not facing side facing a sealing surface, which is formed in the embodiment of a
Zum Anschließen des Druckausdehnungsgefäßes 1 an das Leitungsnetz, d.h. an das rohrförmige Formstück desselben, wird einfach der Anschlussstutzen 7 in das rohrförmige Formstück des Leitungsnetzes eingeschraubt, und zwar so weit, bis die axiale Stirnseite 13 des ringförmigen Ansatzes 9 an der gegenüberliegenden Stirnseite des rohrförmigen Formstückes anliegt. Dabei wird das ringförmige Dichtelement 11 dichtend in den sich bildenden Zwischenraum eingepresst, das Dichtelement 11 dichtet zwischen dem ringförmigen Ansatz 9 und der Stirnseite des rohrförmigen Formstückes.To connect the pressure expansion vessel 1 to the mains, i. the same to the tubular fitting, the connecting piece 7 is simply screwed into the tubular fitting of the pipe network, and indeed so far, until the
Erkennbar ist die Montage und Abdichtung äußerst einfach, es bedarf dazu keines geschulten Montagepersonals, welches bisher erforderlich war, wenn in herkömmlicher Weise zum Abdichten des Anschlussstutzens Hanfband oder ein anderes Dichtband eingesetzt wurde.Visible, the installation and sealing is extremely simple, it requires no trained assembly personnel, which previously required when hemp belt or other sealing tape was used in a conventional manner for sealing the connecting piece.
Natürlich ist die Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt. Weitere Ausgestaltungen sind möglich, ohne den Grundgedanken zu verlassen. Wenn der ringförmige Ansatz 9 wie wie erfindungsgemäß, dargestellt als Schraubmutter ausgebildet ist, besteht der zusätzlich Vorteil, dass die axiale Anordnung des ringförmigen Ansatzes 9 auf dem Anschlussstutzen 7 variabel ist. Bei Verwendung einer Flachdichtung anstelle einer O-Ringdichtung als Dichtelement 11 kann die Nut 10 auch fehlen und der ringförmige Ansatz 9 eine flache Dichtfläche aufweisen.Of course, the invention is not limited to the illustrated embodiment. Further embodiments are possible without departing from the basic idea. If the annular projection 9 as shown in the invention, designed as a screw nut, there is the additional advantage that the axial arrangement of the annular projection 9 on the connecting piece 7 is variable. When using a flat gasket instead of an O-ring seal as a
Claims (4)
- Pressure expansion vessel for connection to a supply network with a vessel interior space divided by a separating element into a water- and a gas space, with a connection piece (7), whereby the water space is pressure-tightly connectable via the connection piece (7) with a tube-shaped fitting of the supply network, whereby the connection piece (7) has a radially protruding ring-shaped projection (9) having a circumferential sealing surface (10) on the side facing the tube-shaped fitting of the supply network and on which abuts a ring-shaped sealing element (11) arranged on the connection piece (7), whereby the connection piece (7) has an external thread (8) and the fitting has a corresponding internal thread,
characterized in that,
the ring-shaped projection (9) of the connection piece (7) is formed by a screw nut screwed on the connection piece (7). - Pressure expansion vessel according to claim 1,
characterized in that,
the sealing surface is formed by a circumferential groove (10) in which the ring-shaped sealing element (11) is regionally received. - Pressure expansion vessel according to claim 1 or 2,
characterized in that,
the ring-shaped sealing element (11) is an O-ring seal. - Pressure expansion vessel according to one or more of the claims 1 to 3,
characterized in that,
the separating element is formed by a membrane.
Priority Applications (1)
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EP08018779.2A EP2182294B1 (en) | 2008-10-28 | 2008-10-28 | Pressure expansion vessel |
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EP08018779.2A EP2182294B1 (en) | 2008-10-28 | 2008-10-28 | Pressure expansion vessel |
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EP2182294A1 EP2182294A1 (en) | 2010-05-05 |
EP2182294B1 true EP2182294B1 (en) | 2017-03-01 |
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EP08018779.2A Active EP2182294B1 (en) | 2008-10-28 | 2008-10-28 | Pressure expansion vessel |
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Family Cites Families (7)
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US4364416A (en) * | 1981-09-25 | 1982-12-21 | Vsi Corporation | Low cost accumulator device |
US5176178A (en) * | 1991-02-20 | 1993-01-05 | Aos Holding Company | Accumulator with randomly uniplanar bladder collapse |
NL9200668A (en) | 1992-04-10 | 1993-11-01 | Johan Gerrit Wormmeester Ing | CONSOLE FOR HANGING AN EXPANSION TANK. |
DE19510360C2 (en) | 1995-03-22 | 1999-09-02 | Kaldewei Franz Gmbh & Co | Pressure compensation vessel |
DE19740674C2 (en) * | 1997-02-20 | 2000-10-26 | Reflex Winkelmann & Pannhoff G | Bubble-shaped membrane |
RU2158699C1 (en) * | 1999-02-23 | 2000-11-10 | Открытое акционерное общество НПО Энергомаш имени академика В.П. Глушко | Tank for storage and expulsion of liquid |
DE10105393C1 (en) | 2001-02-06 | 2002-07-25 | Rudolf Vollmer | Safety group, for closed drinking water heater, has connection for membrane expansion vessel between input and output blocking valves |
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2008
- 2008-10-28 EP EP08018779.2A patent/EP2182294B1/en active Active
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