EP2636901B1 - High pressure device for liquid media - Google Patents

High pressure device for liquid media Download PDF

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Publication number
EP2636901B1
EP2636901B1 EP13156563.2A EP13156563A EP2636901B1 EP 2636901 B1 EP2636901 B1 EP 2636901B1 EP 13156563 A EP13156563 A EP 13156563A EP 2636901 B1 EP2636901 B1 EP 2636901B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cylinder unit
connection
tubular components
valve body
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.)
Active
Application number
EP13156563.2A
Other languages
German (de)
French (fr)
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EP2636901A1 (en
Inventor
Rene Stühlinger
Franz Trieb
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.)
BHDT GmbH
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BHDT GmbH
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Filing date
Publication date
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Publication of EP2636901A1 publication Critical patent/EP2636901A1/en
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Publication of EP2636901B1 publication Critical patent/EP2636901B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B31/00—Component parts, details, or accessories not provided for in, or of interest apart from, other groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/02—Packing the free space between cylinders and pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • F04B53/168—Mounting of cylinder liners in cylinders

Definitions

  • a cylinder unit Z can be taken from a high-pressure pump which, in the axial direction, on the one hand has a sealing system 3 for a plunger P according to FIG EP 0 505 352 B1 and or EP 1 845 290 B1 and on the other hand releasably connected to a valve body 6 .
  • a cylinder unit 1 according to the invention is formed with an inner component 12 and at least one, in this shrunk, outer component 11, wherein at the (the) connection surface (s) of the tubular components 12, 11 are formed by recesses of one of the components grooves 15th
  • a gap 4 is directed directed towards the valve body 6 , which allows an axial displacement of the same up to 0.95 mm and so at best ensures a tightness of the connection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

Die Erfindung betrifft eine Hochdruckeinrichtung für flüssige Medien.The invention relates to a high-pressure device for liquid media.

Im Speziellen bezieht sich die Erfindung auf eine Zylindereinheit einer Hochdruckpumpe für ein Fluid mit einem Druck von größer 2000 bar, umfassend einen durch Schrumpfverbindung aus mindestens zwei konzentrischen, rohrförmigen Komponenten gebildeten Zylinder, welche einerseits mit einem Flanschteil mit einem Dichtsystem, in welchem ein Plunger axial hin- und her-bewegbar und andererseits mit einem Ventilkörper lösbar verbunden ist. Eine solche Zylindereinheit einer Hochdruckpumpe ist zum Beispiel aus dem Dokument US 2008/0019851 A1 bekannt.More particularly, the invention relates to a cylinder unit of a high-pressure pump for a fluid having a pressure of greater than 2000 bar, comprising a cylinder formed by shrink connection of at least two concentric tubular components, which on the one hand with a flange part with a sealing system in which a plunger axially reciprocally movable and on the other hand releasably connected to a valve body. Such a cylinder unit of a high-pressure pump is for example from the document US 2008/0019851 A1 known.

Komponenten von Hochdruckeinrichtungen, insbesondere eine Wandung eines Zylinders von Hochdruckpumpen, sind im Betrieb aufgrund eines Innendruckes von über 2000 bar beträchtlichen Zugspannungen, die gegebenenfalls instationärer Natur bzw. pulsierend wirksam sind, ausgesetzt.Components of high-pressure devices, in particular a wall of a cylinder of high pressure pumps, are exposed in operation due to an internal pressure of over 2000 bar considerable tensile stresses, which may be unsteady nature or pulsating effect.

Die Zugspannungen können sich dabei in Abschnitten der Zylinderwandung der Dehngrenze der Werkstoffe annähern, allenfalls jedoch ein Langzeitfließen des Materials bewirken, welches sich bei gegebener Spannung in logarithmischen Zeitmaße konstant verringert.In this case, the tensile stresses may approach the yield strength of the materials in sections of the cylinder wall, but may at most cause long-term flow of the material, which constantly decreases at given stress in logarithmic time dimensions.

Es ist dem Fachmann bekannt, rohrförmige Bauteile für hohe Innendrücke mit konzentrischen, thermisch aufgeschrumpften Teilen zu versehen oder Fluid führende Rohre mit aufgeschrumpften Außenkomponenten bzw. Außenrohren zu verstärken.It is known in the art to provide tubular components for high internal pressures with concentric, thermoshrinked parts or reinforce fluid-carrying tubes with shrunk-on outer components or outer tubes.

Mittels eines derartigen, aus mehreren konzentrischen, durch ein Schrumpfverfahren gebildeten Rohrkörpers, ist es möglich, die Spannungen in den Teilen der Rohrwand für einen Hochdruckbetrieb derart auszubilden, dass über den Querschnitt möglichst gleiche Materialbelastungen auftreten bzw. dass die Zugspannungsspitzen im Teil, die eine plastische Verformung des Werkstoffes bewirken könnten, vermieden werden.By means of such, of a plurality of concentric, formed by a shrinking tube body, it is possible to form the stresses in the parts of the pipe wall for a high-pressure operation such that over the cross section as possible equal material loads occur or that the tensile stress peaks in the part, a plastic To cause deformation of the material could be avoided.

Zylindereinheiten bzw. Rohrkörper, hergestellt aus mindestens zwei, durch eine Aufschrumpfung eines Außenteiles gebildeten Verbundes, haben jedoch unter anderem einen Nachteil und zwar, dass die innere Komponente im Rohrverbund bei schwellender oder gegebenenfalls wechselnder Belastung axial verschoben und/oder gedehnt werden kann. Dies kann im Flanschbereich der Plungereinrichtung und/oder im Ventilkörper-Anschlussbereich zu Problemen im System einer Abdichtung des Hochdruckfluids führen.Cylinder units or tubular body, made of at least two, formed by a shrinkage of an outer part of the composite, but under Another disadvantage and namely that the inner component in the pipe assembly can be axially displaced and / or stretched with swelling or optionally changing load. This can lead to problems in the system of sealing the high-pressure fluid in the flange region of the plunger device and / or in the valve body connection region.

Hier will die Erfindung den Mangel im Stand der Technik beseitigen und setzt sich zum Ziel, eine gattungsgemäße Zylindereinheit einer Hochdruckpumpe der eingangs genannten Art zu schaffen, welche im schweren Dauerbetrieb eine Dichtheit der Verbindung einer Zylindereinheit mit einem Flanschteil im Plungerbereich und einem solchen im Bereich des Ventilkörpers sicherstellt.Here, the invention seeks to remedy the deficiency in the prior art and has set itself the goal of creating a generic cylinder unit of a high-pressure pump of the type mentioned, which in heavy continuous operation a tightness of the connection of a cylinder unit with a flange in the plunger area and such in the field Ensures valve body.

Dieses Ziel wird erfindungsgemäß bei einer Zylindereinheit im Wesentlichen umfassend einen, durch eine Schrumpfverbindung aus mindestens zwei konzentrischen, rohrförmigen Komponenten gebildeten Zylinder, welcher einerseits mit einem Flanschteil mit einem Dichtsystem, in welchem ein Plunger axial hin- und her-bewegbar und andererseits mit einem Ventilkörper lösbar verbunden ist dadurch erreicht, dass an der Verbindungsfläche von Komponenten Rillen ausgeformt sind und bei der Zylindereinheit die Lagerbüchse des Dichtsystems und die radial äußerste Komponente des Zylinders am Flanschteil anliegen und zwischenliegend einen Spalt bilden, in welchem ein gespanntes, tellerförmiges Federmittel distal an der Außenkomponente des Zylinders und proximal an der Außenseite der Lagerbüchse zum Flanschteil hingerichtet, abgestützt ist und axial gegenüberliegend die rohrförmigen Komponenten des Zylinders im Bereich der Anliegefläche an den Ventilkörper eine metallische Verbindung, insbesondere eine Schweißverbindung, aufweisen, erreicht.This object is inventively in a cylinder unit substantially comprising a cylinder formed by a shrink connection of at least two concentric tubular components, which on the one hand with a flange with a sealing system in which a plunger axially back and forth and on the other hand with a valve body releasably connected is achieved by grooves are formed on the connecting surface of components and bear in the cylinder unit, the bearing bushing of the sealing system and the radially outermost component of the cylinder on the flange and form a gap in between, in which a taut, plate-shaped spring means distal to the outer component executed the cylinder and proximal to the outside of the bearing bush to the flange, is supported and axially opposite the tubular components of the cylinder in the region of the abutment surface against the valve body a metallic compound, in particular a welded joint, have achieved.

In einer bevorzugten Ausgestaltung der Erfindung sind die Rillen an der Verbindungsfläche der rohrförmigen Komponenten im Querschnitt im Wesentlichen halbkreisförmig mit einer Tiefe bis zu 2 mm ausgeformt.In a preferred embodiment of the invention, the grooves are formed on the connecting surface of the tubular components in cross-section substantially semicircular with a depth up to 2 mm.

Im Folgenden soll die Innovation anhand einer Zeichnung, die allenfalls nur einen Ausführungsweg der Erfindung darstellt, näher erläutert werden.In the following, the innovation based on a drawing, which represents only one embodiment of the invention, will be explained in more detail.

Es zeigt in Fig. 1 eine Zylindereinheit in einer Hochdruckpumpe.It shows in Fig. 1 a cylinder unit in a high-pressure pump.

Zur leichteren Zuordnung der Teile und Komponenten in der Zeichnung einer erfindungsgemäßen Zylindereinheit soll die nachfolgende Bezugszeichenliste dienen:

Z
Zylindereinheit
1
Zylinder
11
Außenkomponente des Zylinders
12
Innenkomponente des Zylinders
14
Anliegefläche an den Ventilkörper
15
Rillen an der Verbindungsfläche der Zylinderkomponente
2
Flanschteil
3
Dichtsystem für Plunger
31
Lagerbüchse
4
Spalt
5
Federmittel
6
Ventilkörper
7
Metallische (Schweiß-)Verbindung
For easier allocation of the parts and components in the drawing of a cylinder unit according to the invention, the following list of reference numerals should serve:
Z
cylinder unit
1
cylinder
11
Outer component of the cylinder
12
Inner component of the cylinder
14
Bearing surface to the valve body
15
Grooves on the connecting surface of the cylinder component
2
flange
3
Sealing system for plungers
31
bearing bush
4
gap
5
spring means
6
valve body
7
Metallic (welding) connection

Aus Fig.1 ist prinzipiell eine Zylindereinheit Z einer Hochdruckpumpe zu entnehmen, welche in Axrichtung einerseits mit einem Dichtsystem 3 für einen Plungerkolben P gemäß EP 0 505 352 B1 und/oder EP 1 845 290 B1 und andererseits mit einem Ventilkörper 6 lösbar verbunden ist.Out Fig.1 In principle, a cylinder unit Z can be taken from a high-pressure pump which, in the axial direction, on the one hand has a sealing system 3 for a plunger P according to FIG EP 0 505 352 B1 and or EP 1 845 290 B1 and on the other hand releasably connected to a valve body 6 .

Eine Zylindereinheit 1 nach der Erfindung ist mit einer Innenkomponente 12 und mindestens einer, auf dieser aufgeschrumpften, Außenkomponente 11 gebildet, wobei an der (den) Verbindungsfläche(n) der rohrförmigen Komponenten 12, 11 durch Ausnehmungen aus einer der Komponenten Rillen 15 gebildet sind.A cylinder unit 1 according to the invention is formed with an inner component 12 and at least one, in this shrunk, outer component 11, wherein at the (the) connection surface (s) of the tubular components 12, 11 are formed by recesses of one of the components grooves 15th

Ein Dichtsystem 3 für einen Plungerkolben P weist in an sich bekannter Weise eine Lagerbüchse 31 auf, welche in Axrichtung von einem Flanschteil 2 abgestützt ist. Die äußerste Komponente 11 des Zylinders 1 stützt sich ebenfalls im Außenbereich am Flanschteil 2 ab und weist in radialer Richtung bis zur Lagerbüchse 31 hin eine Ausnehmung auf.A sealing system 3 for a plunger P has, in a manner known per se, a bearing bush 31 which is supported in the axial direction by a flange part 2 . The outermost component 11 of the cylinder 1 is also supported in the outer region on the flange part 2 and has in the radial direction to the bearing bushing 31 toward a recess.

Ein Federmittel 5 in der Ausnehmung, in der Darstellung gemäß Fig. 1 eine Tellerfeder 5, stützt sich distal an der Außenkomponente 11 des Zylinders 1 ab und beaufschlagt proximal durch deren Vorspannung die Außenseite der Lagerbuchse 31, welche ihrerseits vom Flanschteil 2 axial gehalten ist.A spring means 5 in the recess, in the illustration according to Fig. 1 a Belleville spring 5 is supported distally on the outer component 11 of the cylinder 1 and acted upon proximally by the bias of the outside of the bearing bush 31, which in turn is held axially by the flange 2 .

Zwischen Federmittel 5 und der (den) innenliegenden Komponente(n) 12 des Zylinders 1 ist ein Spalt 4 zum Ventilkörper 6 hin gerichtet ausgebildet, welcher eine axiale Verschiebung derselben bis zu 0.95 mm ermöglicht und derart eine Dichtheit der Verbindung allenfalls sicherstellt.Between spring means 5 and the (the) inner component (s) 12 of the cylinder 1 , a gap 4 is directed directed towards the valve body 6 , which allows an axial displacement of the same up to 0.95 mm and so at best ensures a tightness of the connection.

Axial gegenüberliegend zum Dichtsystem 3 eines Plungers P, und zwar im Bereich eines Ventilkörpers 6 des Zylinders 1, sind dessen Komponenten 11, 12 miteinander metallisch verbunden bzw. verschweißt und liegen mit deren bearbeiteten Stirnflächen 14 dichtend an einer Gegenfläche am Ventilkörper 6 an.Axially opposite to the sealing system 3 of a plunger P, in the region of a valve body 6 of the cylinder 1, the components 11, 12 are metallically connected or welded together and lie with their machined end faces 14 sealingly against a counter surface on the valve body 6 .

Zur Behinderung bzw. Verhinderung einer Verschiebung der Komponenten 11, 12 eines Zylinders 1 einer Hochdruckpumpe ist, wie gefunden wurde, von Vorteil, wenn die Rillen 15 im Bereich der Verbindungsfläche im Querschnitt im Wesentlichen halbkreisförmig mit einer Tiefe von bis zu 2 mm ausgeformt sind und gegebenenfalls in Axrichtung spiralig verlaufen.To hinder or prevent a displacement of the components 11, 12 of a cylinder 1 of a high pressure pump, it was found to be advantageous if the grooves 15 are formed in the region of the connecting surface in cross-section substantially semicircular with a depth of up to 2 mm, and optionally spiral in the axial direction.

Claims (2)

  1. A cylinder unit (Z) of a high-pressure pump for a fluid, in particular, for water with a max. pressure of greater than 2000 bar, the cylinder unit (Z) comprising a cylinder (1) formed through a shrink connection from at least two concentric, tubular components (11, 12), which, on the one hand, is connected to a flange part (2) with a seal system (3), in which a plunger (P) is axially moveable back and forth and, on the other hand, is detachably connected with a valve body (6), characterized in that on the connection surface of the tubular components grooves are formed and in the case of the cylinder unit (Z) the bearing bush (31) of the seal system (3) and the radially outermost component (11) of the cylinder (1) abut against the flange part (2) and form a gap (4) lying in between, in which a tensioned, plate-shaped spring means (5) arranged distally on the outermost component (11) of the cylinder (1) and proximally on the outer side of the bearing bush (31) to the flange part (2), is supported and located axially opposite the tubular components (11, 12) of the cylinder (1) in the area of the contact surface (14) on the valve body (6) have a metallic connection (7), in particular, a welded connection.
  2. A cylinder unit (Z) according to claim 1, in which the grooves (15) on the connection surface of the tubular components (11, 12) are formed in the cross section semi-circularly with a depth of up to 2 mm.
EP13156563.2A 2012-03-05 2013-02-25 High pressure device for liquid media Active EP2636901B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA280/2012A AT512043B1 (en) 2012-03-05 2012-03-05 High pressure device for liquid media

Publications (2)

Publication Number Publication Date
EP2636901A1 EP2636901A1 (en) 2013-09-11
EP2636901B1 true EP2636901B1 (en) 2015-07-01

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EP13156563.2A Active EP2636901B1 (en) 2012-03-05 2013-02-25 High pressure device for liquid media

Country Status (5)

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US (1) US9429019B2 (en)
EP (1) EP2636901B1 (en)
CN (1) CN103307051B (en)
AT (1) AT512043B1 (en)
RU (1) RU2527583C1 (en)

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CN114962844B (en) * 2022-04-26 2023-07-21 重庆海浦洛自动化科技有限公司 Energy storage device for high-viscosity medium and use method thereof

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Also Published As

Publication number Publication date
CN103307051B (en) 2016-01-06
US9429019B2 (en) 2016-08-30
AT512043A4 (en) 2013-05-15
EP2636901A1 (en) 2013-09-11
US20130228068A1 (en) 2013-09-05
RU2527583C1 (en) 2014-09-10
CN103307051A (en) 2013-09-18
AT512043B1 (en) 2013-05-15
RU2013109430A (en) 2014-09-10

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