EP2278079A1 - Prise d'eau avec deux sorties - Google Patents

Prise d'eau avec deux sorties Download PDF

Info

Publication number: EP2278079A1
Authority: EP; European Patent Office
Prior art keywords: column; flow; outlets; obturator; column top
Prior art date: 2009-06-25
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.): Granted

Application number

EP10006612A

Other languages

German (de)

English (en)

Other versions

EP2278079B1 (fr

Inventor

Oliver Jäger

Matthias Müller

Peter Ludwig

Alexander Mühlbeyer

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Erhard GmbH and Co KG

Original Assignee

Erhard GmbH and Co KG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2009-06-25

Filing date

2010-06-25

Publication date

2011-01-26

2010-06-25 Application filed by Erhard GmbH and Co KG filed Critical Erhard GmbH and Co KG

2010-06-25 Priority to PL10006612T priority Critical patent/PL2278079T3/pl

2011-01-26 Publication of EP2278079A1 publication Critical patent/EP2278079A1/fr

2011-11-02 Application granted granted Critical

2011-11-02 Publication of EP2278079B1 publication Critical patent/EP2278079B1/fr

Status Active legal-status Critical Current

2030-06-25 Anticipated expiration legal-status Critical

Links

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Classifications

- 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)
Cabinets, Racks, Or The Like Of Rigid Construction (AREA)
Taps Or Cocks (AREA)
Valve Housings (AREA)

EP10006612A 2009-06-25 2010-06-25 Prise d'eau avec deux sorties Active EP2278079B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL10006612T PL2278079T3 (pl)	2009-06-25	2010-06-25	Hydrant z dwoma wylotami

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102009030668A DE102009030668A1 (de)	2009-06-25	2009-06-25	Vorrichtung zum Ausstoßen eines Möbelteils und Möbel

Publications (2)

Publication Number	Publication Date
EP2278079A1 true EP2278079A1 (fr)	2011-01-26
EP2278079B1 EP2278079B1 (fr)	2011-11-02

Family

ID=42735393

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP10006612A Active EP2278079B1 (fr)	2009-06-25	2010-06-25	Prise d'eau avec deux sorties

Country Status (3)

Country	Link
EP (1)	EP2278079B1 (fr)
DE (1)	DE102009030668A1 (fr)
PL (1)	PL2278079T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202014102730U1 (de) *	2014-06-12	2015-09-15	Grass Gmbh	Vorrichtung zum Ausstoßen eines Möbelteils und Möbel
DE202018103609U1 (de) *	2018-06-26	2019-09-27	Grass Gmbh	Positioniereinheit für eine Vorrichtung zum Auswerfen eines bewegbar gelagerten Möbelteils

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 (de) *	1997-07-01	1999-01-07	Robert Messmer	Überflurhydrant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE514030A (fr) *
DE1778452A1 (de) *	1968-04-30	1971-10-07	Eggersmann Kg	Schrank- und oder Tischmobel
DE2419116A1 (de) *	1974-04-20	1975-11-06	Kurz Richard	Vorrichtung zum oeffnen von schubladen, tueren und dgl.
JP3906813B2 (ja) *	2003-02-19	2007-04-18	松下電工株式会社	引出し用飛び出し装置
AT504765B1 (de) *	2007-02-01	2012-04-15	Blum Gmbh Julius	Ausstosshebel für einen ausstosser
DE202007006302U1 (de) *	2007-04-30	2008-04-03	Grass Gmbh	Möbel und Vorrichtung zum Ausstoßen eines Möbelteils
DE202008010547U1 (de) *	2008-08-08	2009-12-17	Paul Hettich Gmbh & Co. Kg	In einen Möbelkorpus einbaubare Ausstoßeinrichtung

2009
- 2009-06-25 DE DE102009030668A patent/DE102009030668A1/de not_active Withdrawn
2010
- 2010-06-25 EP EP10006612A patent/EP2278079B1/fr active Active
- 2010-06-25 PL PL10006612T patent/PL2278079T3/pl unknown

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 (de) *	1997-07-01	1999-01-07	Robert Messmer	Überflurhydrant

Also Published As

Publication number	Publication date
DE102009030668A1 (de)	2010-12-30
PL2278079T3 (pl)	2012-02-29
EP2278079B1 (fr)	2011-11-02

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Publication	Publication Date	Title
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