EP2278079A1 - Hydrant with two exits - Google Patents

Hydrant with two exits Download PDF

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Publication number
EP2278079A1
EP2278079A1 EP10006612A EP10006612A EP2278079A1 EP 2278079 A1 EP2278079 A1 EP 2278079A1 EP 10006612 A EP10006612 A EP 10006612A EP 10006612 A EP10006612 A EP 10006612A EP 2278079 A1 EP2278079 A1 EP 2278079A1
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EP
European Patent Office
Prior art keywords
column
lever
flow
hydrant
outlets
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Granted
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EP10006612A
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German (de)
French (fr)
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EP2278079B1 (en
Inventor
Oliver Jäger
Matthias Müller
Peter Ludwig
Alexander Mühlbeyer
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Erhard GmbH and Co KG
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Erhard GmbH and Co KG
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Priority to PL10006612T priority Critical patent/PL2278079T3/en
Publication of EP2278079A1 publication Critical patent/EP2278079A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/453—Actuated drawers
    • A47B88/457—Actuated drawers operated by electrically-powered actuation means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/453—Actuated drawers
    • A47B88/46—Actuated drawers operated by mechanically-stored energy, e.g. by springs
    • A47B88/463—Actuated drawers operated by mechanically-stored energy, e.g. by springs self-opening

Definitions

  • the invention relates to a above-ground hydrant.
  • Such hydrants are connected to municipal networks, which are laid in the ground. But they are also considered in industrial plants and airports.
  • a hydrant comprises a column which forms a flow channel and which is vertically embedded in the ground. Their lower end is connected to a pipeline of the network. Above the ground, it has at least one outlet. In general, several outlets are provided. There are often a number of outlets at a first geodesic altitude, and a second number of outlets at a second geodetic altitude above.
  • the column can be subdivided into a column saucer and a column top.
  • the subdivision can be idealistic or real; in the latter case, the column comprises two column sections, which are mounted with their ends to each other, for example by means of flanges.
  • shut-off device At the bottom of the column, still in the ground, there is a shut-off device. This can be actuated from above the ground, for example by means of a socket wrench. In general, located between the input of the socket wrench and the obturator, a transmission; this deflects the torque applied by the socket wrench to the obturator.
  • the invention is therefore based on the object to design a hydrant of the type described above such that at the highest possible throughput of the medium as low as possible energy loss is achieved.
  • the inventors have recognized the following:
  • the optimal flow through the open shut-off valve is of crucial importance. Only when the free cross-section permits an undisturbed flow do the measures provided for upstream according to the invention have an effect, in particular the partial constriction or constriction of the flow channel.
  • the zeta value of the obturator in its open position is a critical factor that is critical to the success of the downstream features. There are then no turbulence in the flow generated, and thus no components are excited to vibrate, resulting in a loss of pressure would result. This also no turbulence In the following, geometrically optimized areas are introduced.
  • the in FIG. 1 illustrated hydrant comprises a column 1 with a column base 1.1 and a column top 1.2.
  • a plug 2 At the lower end of the column lower part is a plug 2 with a ball valve.
  • the ball valve is mounted on a shaft - not shown here - which serves to rotate the ball valve.
  • the ball chick is stored solely on the waves.
  • the pillar base 1.1 is largely in the ground. It protrudes only slightly above the ground 3.
  • the column top part 1.2 has lower and upper outlets 4 and 5. These two outlets 4 and 5 are each arranged at a certain geodetic height; the outlets 5 are located above the outlets 4.
  • Each group of outlets 4 or 5 has several individual outlets, 2 of which are shown.
  • the upper (downstream) located part of the column top 1.2 is tapered.
  • the channel cross-section covered thereby tapers, so that a flow acceleration and thus a calming takes place.
  • the decisive factor is the flow-optimized design of the outlets 4, 5.
  • the transition from the respective column part to the relevant outlet is rounded. See the radius of curvature 6 to the lower outlet 4.
  • the radius of curvature should be as large as possible. With a nominal diameter DN of 150 he should if possible also be 150 mm or larger. In general, the radius of curvature is equal to or greater than the nominal world.
  • the angle of departure that is, the angle between the flow in the column and the partial flow exiting the outlet in question, will generally be 90 degrees. This has proven to be optimal. If it is greater than 90 degrees, this indeed has a positive effect on the flow losses, as they tend to become smaller. However, it is unfavorable for the stress of the hose to be connected. If it is less than 90 degrees, there is a significant deterioration of the flow resistance.
  • the ratio of the radius of curvature to the nominal diameter DN should be at most equal to 0.8. From the mentioned ratio of radius of curvature to DN equal to or greater than 1 and from the ratio of radius of curvature to DN equal to 0.8, the corresponding value results at intermediate values between an outlet angle of 90 and greater than 90.
  • the hydrant according to the embodiment of FIG. 2 again has two departure levels 4 and 5.
  • the upper level is protected against unauthorized actuation by a fall jacket.
  • Geometry optimization creates a uniform flow field without dead water areas.
  • the Kv value is 980 m 3 / h at DN of 150.
  • the total zeta value of the hydrant is about 0.72.
  • the flow is not limited by the hydrant (above the obturator), but by the characteristics of the supply network. Here it is advisable to carry out a further analysis with the ball valve to determine its influence on the high mass flows.
  • the Kv value was above 1500 m 3 / h at DN of 150.
  • the zeta value of the hydrant is about 0.30.
  • Kv value also referred to as flow value
  • flow value is the flow rate in m 3 / h of water at the average temperature of 20 ° C, measured at a pressure drop of 1 bar and with the valve fully open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)
  • Taps Or Cocks (AREA)
  • Cabinets, Racks, Or The Like Of Rigid Construction (AREA)

Abstract

The device has a lever section (5) of an ejection lever (3) and another lever section (6) of the ejection lever is hinged placed in such a manner that during movement of the ejection lever it is brought into an unfolded position for ejecting the movably accommodated furniture unit of latter lever section. The latter lever section remains in unfolded position during the ejection of the movable furniture unit to prolong lever length of the ejection lever against lever length without latter lever section.

Description

Die Erfindung betrifft einen Überflurhydranten. Solche Hydranten sind an kommunale Netze angeschlossen, die im Erdreich verlegt sind. Sie kommen aber auch bei Industrieanlagen und Flughäfen in Betracht.The invention relates to a above-ground hydrant. Such hydrants are connected to municipal networks, which are laid in the ground. But they are also considered in industrial plants and airports.

Ganz allgemein umfasst ein Hydrant eine Säule, die einen Strömungskanal bildet und die vertikal in den Boden eingelassen ist. Ihr unteres Ende ist an eine Rohrleitung des Netzes angeschlossen. Oberhalb des Erdreiches weist sie wenigstens einen Abgang auf. Im Allgemeinen sind mehrere Abgänge vorgesehen. Dabei befindet sich häufig eine Anzahl von Abgängen auf einer ersten geodätischen Höhe, und eine zweite Anzahl von Abgängen auf einer darüber befindlichen zweiten geodätischen Höhe.In general, a hydrant comprises a column which forms a flow channel and which is vertically embedded in the ground. Their lower end is connected to a pipeline of the network. Above the ground, it has at least one outlet. In general, several outlets are provided. There are often a number of outlets at a first geodesic altitude, and a second number of outlets at a second geodetic altitude above.

Die Säule lässt sich in ein Säulen-Untertell und ein Säulen-Oberteil unterteilen. Dlese Unterteilung kann ideell oder wirklich erfolgen; im letzteren Falle umfasst die Säule zwei Säulenabschnitte, die mit ihren Enden aneinander montiert sind, beispielswelse mittels Flanschen.The column can be subdivided into a column saucer and a column top. The subdivision can be idealistic or real; in the latter case, the column comprises two column sections, which are mounted with their ends to each other, for example by means of flanges.

Am unteren Ende der Säule, noch Im Erdreich, befindet sich ein Absperrorgan. Dieses ist von oberhalb des Erdreiches her betätigbar, beispielsweise mittels eines Steckschlüssels. Im Allgemeinen befindet sich zwischen dem Eingang des Steckschlüssels und dem Absperrorgan ein Getriebe; dieses lenkt das vom Steckschlüssel aufgebrachte Drehmoment auf das Absperrorgan um.At the bottom of the column, still in the ground, there is a shut-off device. This can be actuated from above the ground, for example by means of a socket wrench. In general, located between the input of the socket wrench and the obturator, a transmission; this deflects the torque applied by the socket wrench to the obturator.

Ein wichtiges Kriterium für die Leistung eines Überflurhydranten ist der erzielbare Durchsatz. Die Anforderungen an den erzlelbaren Durchsatz wurden bezüglich Feuerlöschsystemen von Industrieanlagen und Flughäfen bedeutend erhöht. Der Durchsatz hängt einerseits vom Netzdruck ab. Dieser kann 16 bar und mehr betragen. Wesentlich ist aber auch der Strömungswiderstand in den einzelnen Bereichen eines Hydranten. Die diesbezüglichen Eigenschaften bekannter Hydranten sind Insoweit verbesserungsbedürftig.An important criterion for the performance of an above-ground hydrant is the achievable throughput. The requirements for the apparent throughput have been significantly increased with respect to fire extinguishing systems of industrial plants and airports. The throughput depends on the one hand on the network pressure. This can be 16 bar and more. But also essential is the flow resistance in the individual areas of a hydrant. The relevant properties of known hydrants are in need of improvement.

Der Erfindung liegt somit die Aufgabe zugrunde, einen Hydranten der eingangs beschriebenen Bauart derart zu gestalten, dass bei möglichst hohem Durchsatz des Mediums ein möglichst geringer Energieverlust erzielt wird.The invention is therefore based on the object to design a hydrant of the type described above such that at the highest possible throughput of the medium as low as possible energy loss is achieved.

Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst.This object is solved by the features of claim 1.

Die Erfinder haben Folgendes erkannt:The inventors have recognized the following:

Die optimale Strömung durch das geöffnete Absperrventil ist von entscheidender Bedeutung. Nur dann, wenn der freie Querschnitt eine ungestörte Strömung zulässt, wirken sich die stromaufwärts vorgesehenen, erfindungsgemäßen Maßnahmen aus, vor allem die partielle Einschnürung oder Verengung des Strömungskanales. Der Zeta-Wert des Absperrorganes in dessen Offen-Stellung ist eine kritische Größe, die für den Erfolg der stromabwärts vorgesehenen Merkmale entscheidend ist. Es werden dann auch keine Turbulenzen in der Strömung erzeugt, und damit werden auch keine Bauteile zu Schwingungen angeregt, was einen Druckverlust zur Folge hätte. Damit werden auch keine Turbulenzen In die nachfolgenden, geometrisch optimierten Bereiche eingeführt.The optimal flow through the open shut-off valve is of crucial importance. Only when the free cross-section permits an undisturbed flow do the measures provided for upstream according to the invention have an effect, in particular the partial constriction or constriction of the flow channel. The zeta value of the obturator in its open position is a critical factor that is critical to the success of the downstream features. There are then no turbulence in the flow generated, and thus no components are excited to vibrate, resulting in a loss of pressure would result. This also no turbulence In the following, geometrically optimized areas are introduced.

Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im Einzelnen Folgendes dargestellt:

Figur 1
zeigt eine erste Ausführungsform eines Hydranten im Aufriss.
Figur 2
zeigt eine zweite Ausführungsform eines Hydranten im Aufriss.
Figur 3
zeigt die Kontur der mediumberührten Flächen des Strömungskanales beim Hydranten gemäß Figur 1.
Figur 4
veranschaulicht den Verlauf der Stromlinien bei Vollöffnung eines unteren Abganges und bei Verschluss eines oberen Abganges.
Figur 5
veranschaulicht den Verlauf der Stromlinien bei völliger Offenstellung beider Abgänge.
The invention is explained in more detail with reference to the drawing. It details the following:
FIG. 1
shows a first embodiment of a hydrant in elevation.
FIG. 2
shows a second embodiment of a hydrant in elevation.
FIG. 3
shows the contour of the wetted surfaces of the flow channel at the hydrant according to FIG. 1 ,
FIG. 4
illustrates the course of the flow lines at full opening of a lower outlet and closing an upper outlet.
FIG. 5
illustrates the course of the streamlines with complete open position of both outflows.

Der in Figur 1 dargestellte Hydrant umfasst eine Säule 1 mit einem Säulenunterteil 1.1 und einem Säulenoberteil 1.2.The in FIG. 1 illustrated hydrant comprises a column 1 with a column base 1.1 and a column top 1.2.

Am unteren Ende des Säulenuntertelles befindet sich ein Kükenhahn 2 mit einem Kugelküken. Das Kugelküken ist auf einer Welle gelagert - hier nicht gezeigt -, die zum Verdrehen des Kugelkükens dient. Dabei ist das Kugelküken einzig und allein auf den Wellen gelagert.At the lower end of the column lower part is a plug 2 with a ball valve. The ball valve is mounted on a shaft - not shown here - which serves to rotate the ball valve. The ball chick is stored solely on the waves.

Säulenunterteil 1.1 und Säulenoberteil 1,2 sind mit einer Flanschverbindung 1.3 mitelnander verbunden.Column base 1.1 and column top 1.2 are mitelnander connected to a flange 1.3.

Das Säulenunterteil 1.1 befindet sich weitgehend im Erdreich. Es ragt nur geringfügig über den Erdboden 3 hinaus.The pillar base 1.1 is largely in the ground. It protrudes only slightly above the ground 3.

Das Säulenoberteil 1.2 weist untere und obere Abgänge 4 und 5 auf. Diese beiden Abgänge 4 und 5 sind jeweils auf einer bestimmten geodätischen Höhe angeordnet; die Abgänge 5 befinden sich oberhalb der Abgänge 4.The column top part 1.2 has lower and upper outlets 4 and 5. These two outlets 4 and 5 are each arranged at a certain geodetic height; the outlets 5 are located above the outlets 4.

Jede Gruppe von Abgängen 4 oder 5 hat mehrere Einzelabgänge, von denen jeweils 2 dargestellt sind. Wie man sieht, verjüngt sich der obere (stromabwärts) befindliche Teil des Säulenoberteiles 1.2. Auch der davon umfasste Kanalquerschnitt verjüngt sich, so dass eine Strömungsbeschleunigung und damit eine Beruhigung stattfindet.Each group of outlets 4 or 5 has several individual outlets, 2 of which are shown. As you can see, the upper (downstream) located part of the column top 1.2 is tapered. Also, the channel cross-section covered thereby tapers, so that a flow acceleration and thus a calming takes place.

Ganz entscheidend ist die strömungsoptimierte Gestaltung der Abgänge 4, 5. Der Übergang vom jeweiligen Säulenteil zu dem betreffenden Abgang Ist gerundet. Siehe den Krümmungsradius 6 zum unteren Abgang 4. Der Krümmungsradius sollte möglichst groß sein. Bei einem Nenndurchmesser DN von 150 sollte er möglichst auch 150 mm oder größer sein. Ganz allgemein gilt, dass der Krümmungsradius gleich groß oder größer als die Nennwelte Ist.The decisive factor is the flow-optimized design of the outlets 4, 5. The transition from the respective column part to the relevant outlet is rounded. See the radius of curvature 6 to the lower outlet 4. The radius of curvature should be as large as possible. With a nominal diameter DN of 150 he should if possible also be 150 mm or larger. In general, the radius of curvature is equal to or greater than the nominal world.

Der Abgangswinkel, das heißt der Winkel zwischen der Strömung in der Säule und der Teilströmung, die aus dem betreffenden Abgang austritt, wird im Allgemeinen 90 Grad betragen. Dies hat sich als optimal erwiesen. Ist er größer als 90 Grad, so wirkt sich dies zwar für die Strömungsverluste günstig aus, indem diese tendenziell kleiner werden. Jedoch wirkt es sich ungünstig für die Beanspruchung des anzuschließenden Schlauches aus. Ist er kleiner als 90 Grad, so findet eine deutliche Verschlechterung des Strömungswiderstandes statt.The angle of departure, that is, the angle between the flow in the column and the partial flow exiting the outlet in question, will generally be 90 degrees. This has proven to be optimal. If it is greater than 90 degrees, this indeed has a positive effect on the flow losses, as they tend to become smaller. However, it is unfavorable for the stress of the hose to be connected. If it is less than 90 degrees, there is a significant deterioration of the flow resistance.

Will man dennoch den Abgangswinkel größer als 90 Grad bemessen, sodass der betreffende Abgang leicht nach oben zeigt, so sollte das Verhältnls von Krümmungsradius zu Nenndurchmesser DN höchstens gleich 0,8 betragen. Aus dem genannten Verhältnis von Krümmungsradius zu DN gleich oder größer 1 und aus dem Verhältnis von Krümmungsradius zu DN gleich 0,8 ergibt sich der entsprechende Wert bei Zwischenwerten zwischen einem Abgangswinkel von 90 und größer als 90.If, nevertheless, the outlet angle is to be greater than 90 degrees, so that the outlet in question points slightly upwards, then the ratio of the radius of curvature to the nominal diameter DN should be at most equal to 0.8. From the mentioned ratio of radius of curvature to DN equal to or greater than 1 and from the ratio of radius of curvature to DN equal to 0.8, the corresponding value results at intermediate values between an outlet angle of 90 and greater than 90.

Der Hydrant gemäß der Ausführungsform nach Figur 2 weist wiederum zwei Abgangsebenen 4 und 5 auf. Die obere Ebene ist genen unbefugtes Betätigen durch einen Fallmantel geschützt. Auch hier ist der Übergang zwischen dem betreffenden Säulenteil - hler Säulenoberteil 1.2 - und dem Abgang strömungsoptimiert.The hydrant according to the embodiment of FIG. 2 again has two departure levels 4 and 5. The upper level is protected against unauthorized actuation by a fall jacket. Here, too, the transition between the relevant column section - column upper column 1.2 - and the outlet flow optimized.

In der Darstellung rechts erkennt man die Apparatur 7 zum Bedienen des hier nicht gezeigten Kükenhahnes. Die Oberkante der Apparatur 7 ist bündig mit dem Erdboden.In the illustration on the right you can see the apparatus 7 for operating the plug valve, not shown here. The upper edge of the apparatus 7 is flush with the ground.

In Figur 3 erkennt man den Strom, der sich in die einzelnen Abgänge verzweigt. Auf dem Wege der unteren Abgänge 4 zu den oberen Abgängen 5 findet eine Strömungsverengung und damit eine Beschleunigung statt.In FIG. 3 you can see the current that branches into the individual outlets. On the way of the lower outlets 4 to the upper outlets 5 there is a flow constriction and thus an acceleration.

Aus den schematischen Darstellungen der Figuren 4 und 5 erkennt man den Strömungsverlauf im Einzelnen.From the schematic representations of FIGS. 4 and 5 one recognizes the course of the flow in detail.

Dabei sind jeweils zwei Abgänge beziehungsweise Abgangsgruppen vorgesehen, ein unterer Abgang 4 sowie ein-oberer Abgang 5, genau wie bei den vorausgegangenen Ausführungsformen.In each case, two outgoing or leaving groups are provided, a lower outlet 4 and one-upper outlet 5, just as in the previous embodiments.

Bei der Ausführungsform gemäß Figur 4 ist der untere Abgang geöffnet, der obere aber geschlossen. Auf der Skala links ist die Strömungsgeschwindlgkelt In m/s aufgetragen.In the embodiment according to FIG. 4 the lower outlet is open, the upper one is closed. On the scale on the left, the flow velocity is plotted in m / s.

Aus Figur 4 erkennt man Folgendes:Out FIG. 4 do you recognize the following:

Durch die Geometrieoptimierung stellt sich ein gleichmäßiges Strömungsfeld ohne Totwassergebiete ein..Geometry optimization creates a uniform flow field without dead water areas.

Im Strömungsfeld kann man deutlich sehen, dass durch die optimierte Geometrie ein fast wirbelfreies Ausströmen stattfindet. Der obere Bereich (zu den unteren Abgängen) zeigt weniger Wirbel (= Verluste).In the flow field one can clearly see that due to the optimized geometry an almost vortex-free outflow takes place. The upper area (to the lower branches) shows less vortex (= losses).

Die Druckverluste im Übergangsbereich des unteren Abganges sind ebenfalls minimiert.The pressure losses in the transition area of the lower outlet are also minimized.

Der Kv-Wert beträgt hierbei 980 m3/h bei DN von 150.The Kv value is 980 m 3 / h at DN of 150.

Der Gesamt Zeta-Wert des Hydranten beträgt hierbei etwa 0,72.The total zeta value of the hydrant is about 0.72.

Aus der Darstellung gemäß Figur 5 ergibt sich Folgendes:From the illustration according to FIG. 5 the following results:

Bei der Vollöffnung ist die Fläche der Abgänge größer als die Fläche am Einlass. Aufgrund dieser Flächenverhältnisse, in Kombination mit dem optimierten Strömungsfeld, stellt sich die zur Bestimmung des Kv-Wertes geforderte statische Druckdifferenz von einem Bar erst bei extrem hohen Volumenströmen ein.At full opening, the area of the outlets is larger than the area at the inlet. Because of these area ratios, in combination with the optimized Flow field, the required for the determination of Kv value static pressure difference of a bar only at extremely high flow rates.

Der Durchfluss wird nicht vom Hydranten (oberhalb des Absperrorgans), sondern von den Kenndaten des Versorgungsnetz begrenzt. Hier empfiehlt es sich, eine weitere Analyse mit dem Kugelhahn durchzuführen, um dessen Einfluss bei den hohen Masseströmen zu bestimmen.The flow is not limited by the hydrant (above the obturator), but by the characteristics of the supply network. Here it is advisable to carry out a further analysis with the ball valve to determine its influence on the high mass flows.

Der Kv-Wert lag über 1500 m3/h bei DN von 150.The Kv value was above 1500 m 3 / h at DN of 150.

Der Zeta-Wert des Hydranten beträgt hierbei etwa 0,30.The zeta value of the hydrant is about 0.30.

Ganz wichtig ist die Gestaltung des Absperrorganes 2. Dabei ist ein minimaler Strömungswiderstand anzustreben. Dieser ist Voraussetzung dafür, dass eine Störung der stromabwärtigen Strömung (weiter oben gelegen) vermieden wird.Very important is the design of the obturator 2. Here, a minimum flow resistance is desirable. This is a prerequisite for avoiding disturbance of the downstream flow (higher up).

Unter dem oben genannten Kv-Wert, auch Durchflusswert genannt, versteht man den Durchfluss in m3/h von Wasser bei der durchschnittlichen Temperatur von 20 °C, gemessen bei einem Druckverlust von 1 bar und bei voll geöffneter Armatur.The above-mentioned Kv value, also referred to as flow value, is the flow rate in m 3 / h of water at the average temperature of 20 ° C, measured at a pressure drop of 1 bar and with the valve fully open.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Säulepillar
1.11.1
SäufenunterteilSäufenunterteil
1.21.2
SäulenoberteilColumn top
1.31.3
Flanschverbindungflange
22
Absperrorganshutoff
44
AbgängeDisposals
55
AbgängeDisposals
66
Krümmungsradiusradius of curvature

Claims (1)

Hydrant zum Einlassen in den Boden 1.1 mit einer Säule (1), umfassend ein Säulenunterteil (1.1) und ein Säulenoberteil (1.2), die beide einen Strömungskanal bilden; 1.2 mit einem am Fuße des Säulenunterteils (1.1) angeordneten Absperrorgan; wobei 1.3 das Absperrorgan ein Kükenhahn Ist, bei dem das Küken kugelförmig, und ausschließlich auf den die Kugel tragenden Wellen drehbar gelagert ist und das Absperrorgan derart ausgebildet ist, dass es in Offen-Stellung einen Zeta-Wert von höchstens 0,1 auf, vorzugsweise 0,09, 0,08, 0,07, 0,06, 0,05 und weniger aufweist; 1.4 mit wenigstens einem unteren Abgang (4) aus dem Säulenoberteil (1.2); 1.5 mit wenigstens einem oberen Abgang aus dem Säulenoberteil (1.2); 1.6 zwischen den beiden Abgängen (4, 5) verjüngt sich der aus dem Säulenoberteil (1.2) gebildete Strömungskanal; 1.7 wenigstens eines der Abgänge (4, 5) ist derart gestaltet, dass die Strömung bei der Umlenkung einen Krümmungsradius (6) beschreibt. Hydrant to let in the ground 1.1 comprising a column (1), comprising a column bottom part (1.1) and a column top part (1.2), both of which form a flow channel; 1.2 with a at the foot of the column base (1.1) arranged obturator; in which 1.3 the obturator is a plug tap, in which the plug is spherical, and is rotatably mounted exclusively on the shaft carrying the ball and the obturator is designed such that it has a zeta value of at most 0.1, preferably 0 in the open position , 09, 0.08, 0.07, 0.06, 0.05 and less; 1.4 with at least one lower outlet (4) from the column top (1.2); 1.5 with at least one upper outlet from the column top (1.2); 1.6 between the two outlets (4, 5), the flow channel formed from the column top part (1.2) tapers; 1.7 at least one of the outlets (4, 5) is designed such that the flow at the deflection describes a radius of curvature (6).
EP10006612A 2009-06-25 2010-06-25 Hydrant with two exits Active EP2278079B1 (en)

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Applications Claiming Priority (1)

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DE102009030668A DE102009030668A1 (en) 2009-06-25 2009-06-25 Device for ejecting a furniture part and furniture

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EP2278079A1 true EP2278079A1 (en) 2011-01-26
EP2278079B1 EP2278079B1 (en) 2011-11-02

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Family Applications (1)

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EP10006612A Active EP2278079B1 (en) 2009-06-25 2010-06-25 Hydrant with two exits

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DE (1) DE102009030668A1 (en)
PL (1) PL2278079T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014102730U1 (en) * 2014-06-12 2015-09-15 Grass Gmbh Device for ejecting a furniture part and furniture
DE202018103609U1 (en) * 2018-06-26 2019-09-27 Grass Gmbh Positioning unit for a device for ejecting a movably mounted furniture part

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980125A (en) * 1958-07-18 1961-04-18 Allen F Grant Fire hydrant and valve therefor
DE19728060A1 (en) * 1997-07-01 1999-01-07 Robert Messmer Fire hydrant multi-part column parts

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE514030A (en) *
DE1778452A1 (en) * 1968-04-30 1971-10-07 Eggersmann Kg Cabinet and or table furniture
DE2419116A1 (en) * 1974-04-20 1975-11-06 Kurz Richard Spring loaded drawer opening mechanism - has sprung leverage combined with locking mechanism effective in closed position of drawer
JP3906813B2 (en) * 2003-02-19 2007-04-18 松下電工株式会社 Pull-out device for drawer
AT504765B1 (en) * 2007-02-01 2012-04-15 Blum Gmbh Julius EJECTOR LEVER FOR AN EJECTOR
DE202007006302U1 (en) * 2007-04-30 2008-04-03 Grass Gmbh Furniture and device for ejecting a furniture part
DE202008010547U1 (en) * 2008-08-08 2009-12-17 Paul Hettich Gmbh & Co. Kg Can be installed in a furniture carcass ejector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2980125A (en) * 1958-07-18 1961-04-18 Allen F Grant Fire hydrant and valve therefor
DE19728060A1 (en) * 1997-07-01 1999-01-07 Robert Messmer Fire hydrant multi-part column parts

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PL2278079T3 (en) 2012-02-29
EP2278079B1 (en) 2011-11-02
DE102009030668A1 (en) 2010-12-30

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