DE598919C - Right-angled elbow for pressure medium lines - Google Patents
Right-angled elbow for pressure medium linesInfo
- Publication number
- DE598919C DE598919C DENDAT598919D DE598919DD DE598919C DE 598919 C DE598919 C DE 598919C DE NDAT598919 D DENDAT598919 D DE NDAT598919D DE 598919D D DE598919D D DE 598919DD DE 598919 C DE598919 C DE 598919C
- Authority
- DE
- Germany
- Prior art keywords
- bend
- pressure medium
- section
- cross
- medium lines
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
- F15D1/04—Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Description
Die üblichen rechtwinkligen Krümmer für Druckmittelleitungen sind als Viertelkreisbogen mit einem Radius von ^d, wobei unter d der Radius des Krümmerquerschnittes ■ s zu verstehen ist, ausgeführt. Zur Verringerung der Druckverluste wurde vorgeschlagen, die Krümmer in der Krümmerebene, und zwar stetig zunehmend, bis zur schärfsten Rohrkrümmung zu erweitern bzw. verengte An-Lo schlußstücke zu verwenden.The usual right-angled bends for pressure medium lines are designed as a quarter-circle arc with a radius of ^ d, where d is the radius of the cross-section of the bend ■ s. To reduce the pressure loss, it has been proposed to expand the bend in the bend plane, and indeed steadily increasing, to the sharpest pipe bend or to use narrowed connection pieces.
Erfindungsgemäß, werden die Druckverluste weiterhin in Krümmern wesentlich dadurch herabgemindert, daß die Baulänge des Krümmers 2,5 d beträgt, die innere Begrenzungslinie zu einer Geraden ausgebildet wird, die äußere Begrenzungslinie einem Kreisbogen mit dem Radius des Normalkrümmers von 4 d entspricht und infolgedessen kleiner als ein Viertelkreisbogen ist sowie die Seiten-Wandungen im Abstand von d zueinander geführt sind, so daß der Querschnitt des Krümmers eine an den Enden beginnende, bis zur Mittellinie sich ständig in Richtung nach der Innen- und Außenbegrenzungslkiie erweiternde elliptische Form erhält. Der Krümmer ist also in seiner Baulänge wesentlich gegenüber dem Normalkrümmer verkürzt und besitzt demnach einen kleineren Reibungswiderstand und ist zur Vermeidung von Stauungen zur schärfsten Krümmung hin bedeutend erweitert, , wobei aber durch die Führung der Seiten-Avandungen im Abstand von d im Krümmer Wirbelungeri vermieden werden.According to the invention, the pressure losses in bends are further reduced significantly in that the overall length of the bend is 2.5 d , the inner boundary line is formed into a straight line, the outer boundary line corresponds to an arc with the radius of the normal bend of 4 d and consequently smaller than is a quarter of a circle and the side walls are guided at a distance d from one another, so that the cross-section of the bend has an elliptical shape beginning at the ends and continuously expanding towards the inner and outer limiters up to the center line. The length of the elbow is significantly shorter than that of the normal elbow and therefore has a lower frictional resistance and, in order to avoid congestion, is significantly expanded towards the sharpest curvature, but the guiding of the side curves at a distance of d in the elbow prevents vortices .
In der Zeichnung ist eine Ausführungsform des Erfindungsgegenstandes dargestellt. Der Krümmer besteht aus dem bogenförmigen Stück c und den beiden in beliebiger Weise ausgebildeten Anschlußstücken α und b. Die Baulänge des bogenförmigen Stückes c IThe drawing shows an embodiment of the subject matter of the invention. The elbow consists of the arcuate piece c and the two connecting pieces α and b, which are designed in any way. The overall length of the arched piece c I
beträgt 2,5 rf, wobei rf der Durchmesser des 40 Querschnittes eines Normalkrümmers mit der üblichen Baulänge 4 d ist. Die innere Begrenzungslinie/ ist zu einer Geraden ausgebildet, während die äußere Begrenzungslinie*? einem Kreisbogen mit dem Radius des Nor- 45 malkrümmers von 40? Baulänge entspricht. Die Seitenwandungen / sind im Abstand von d zueinander geführt. Mithin besitzt der Querschnitt des Krümmers 'eine an den Enden beginnende, bis zur Mittellinie sich ständig 50 in Richtung nach der Innen- und Außenbegrenzungsliriie erweiternde elliptische Form. Zur Vergrößerung der Baulänge des Krümmers können Rohrstücke h, g von kreisförmigem Querschnitt, wie sie punktiert einge- 55 zeichnet sind, an das Bogenstück angeschlossen werden.is 2.5 rf, where rf is the diameter of the cross-section of a normal bend with the usual length of 4 d . The inner boundary line / is designed as a straight line, while the outer boundary line *? an arc of a circle with the radius of the normal 45 curve of 40? Length corresponds. The side walls / are guided to one another at a distance of d. The cross-section of the bend therefore has an elliptical shape beginning at the ends and continuously widening up to the center line in the direction of the inner and outer delimiting lines. To increase the overall length of the bend, pipe sections h, g of circular cross-section, as shown in dotted lines, can be connected to the bend.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE598919T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE598919C true DE598919C (en) | 1934-06-21 |
Family
ID=6574300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT598919D Expired DE598919C (en) | Right-angled elbow for pressure medium lines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE598919C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE961933C (en) * | 1952-09-11 | 1957-04-11 | Phoenix Rheinrohr Ag Vereinigt | Weld-in elbow with pipe cross-section deviating from the circular shape for piping systems with high elasticity |
FR2468017A1 (en) * | 1979-10-18 | 1981-04-30 | Centre Techn Ind Mecanique | Fluid flow piping elbow - has oval section with or without reducers and straight oval pipe adjacent to elbow |
US6179342B1 (en) * | 1999-06-11 | 2001-01-30 | Hsin-Der Shen | Bend conduit having low pressure loss coefficient |
US6422608B1 (en) * | 1998-09-21 | 2002-07-23 | Dong Lim Industrial Co., Ltd. | Anti-abrasion pipe fittings for high-speed particle-laden flow |
EP2693097A1 (en) * | 2012-08-02 | 2014-02-05 | Phönix Armaturen-Werke Bregel GmbH | Bender for a fitting that guides gas or a liquid and exchangeable valve |
WO2017071849A1 (en) * | 2015-10-29 | 2017-05-04 | Norma Germany Gmbh | Connector for a fluid line |
-
0
- DE DENDAT598919D patent/DE598919C/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE961933C (en) * | 1952-09-11 | 1957-04-11 | Phoenix Rheinrohr Ag Vereinigt | Weld-in elbow with pipe cross-section deviating from the circular shape for piping systems with high elasticity |
FR2468017A1 (en) * | 1979-10-18 | 1981-04-30 | Centre Techn Ind Mecanique | Fluid flow piping elbow - has oval section with or without reducers and straight oval pipe adjacent to elbow |
US6422608B1 (en) * | 1998-09-21 | 2002-07-23 | Dong Lim Industrial Co., Ltd. | Anti-abrasion pipe fittings for high-speed particle-laden flow |
US6179342B1 (en) * | 1999-06-11 | 2001-01-30 | Hsin-Der Shen | Bend conduit having low pressure loss coefficient |
EP2693097A1 (en) * | 2012-08-02 | 2014-02-05 | Phönix Armaturen-Werke Bregel GmbH | Bender for a fitting that guides gas or a liquid and exchangeable valve |
RU2562325C2 (en) * | 2012-08-02 | 2015-09-10 | Фёникс Арматурен-Верке Брегель ГмбХ | Gas or fluid transportation fixture arm and nab-bang valve |
US9309977B2 (en) | 2012-08-02 | 2016-04-12 | Phönix Armaturen-Werke Bregel GmbH | Manifold of a valve conducting gas or a liquid and shuttle valve |
WO2017071849A1 (en) * | 2015-10-29 | 2017-05-04 | Norma Germany Gmbh | Connector for a fluid line |
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