EP2038553A2 - Système cylindre-piston pour pompe hydraulique ou moteur hydraulique - Google Patents

Système cylindre-piston pour pompe hydraulique ou moteur hydraulique

Info

Publication number
EP2038553A2
EP2038553A2 EP07804595A EP07804595A EP2038553A2 EP 2038553 A2 EP2038553 A2 EP 2038553A2 EP 07804595 A EP07804595 A EP 07804595A EP 07804595 A EP07804595 A EP 07804595A EP 2038553 A2 EP2038553 A2 EP 2038553A2
Authority
EP
European Patent Office
Prior art keywords
fluid
cylinder
valve
piston assembly
displacement 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.)
Granted
Application number
EP07804595A
Other languages
German (de)
English (en)
Other versions
EP2038553B1 (fr
Inventor
Bernhard Frey
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.)
Frey Bernhard
Original Assignee
Frey Bernhard
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.)
Filing date
Publication date
Application filed by Frey Bernhard filed Critical Frey Bernhard
Publication of EP2038553A2 publication Critical patent/EP2038553A2/fr
Application granted granted Critical
Publication of EP2038553B1 publication Critical patent/EP2038553B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/084—Machines, pumps, or pumping installations having flexible working members having tubular flexible members the tubular member being deformed by stretching or distortion
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • F04B53/1007—Ball valves having means for guiding the closure member
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • F04B53/1017—Semi-spherical ball valves
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1087—Valve seats

Definitions

  • Cylinder piston assembly for a fluid pump or a fluid motor
  • the invention relates to a cylinder-piston assembly according to the preamble of claim 1.
  • Cylinder piston assemblies of this type are represented in the relevant market, especially as high-pressure water pumps.
  • An essential field of application for pumps of this type is the pressure conveying of contaminated with foreign substances, especially abrasive granules, water. Above all, high-speed machines with high working pressures in the range of a few hundred to one thousand bar are required. The energetic as well as the volumetric efficiency is therefore of great importance.
  • the object of the invention is therefore the creation of pumps or Fluid motors, which are characterized by high efficiencies of the aforementioned type as well as by a long service life.
  • the inventive solution according to this problem is determined by the features of claim 1.
  • Axial Diaphragm Diaphragm Pistons with Internal Working Space provide the foundation for a robust construction with high wear resistance even when operating with abrasive fluids.
  • relatively large dead spaces are generally to be observed here, as a result of which the volumetric efficiency is adversely affected.
  • This problem is solved with the invention, namely with the aid of Totraura displacement bodies. Overall, the invention thus allows a largely optimized design type.
  • Fig.l a partial axial section of a high-pressure pump with a designed as Axialdehnungs-Schlauchmembrankolben working piston, with which a engaging in the working space and participating in the oscillatory drive motion Totraum- displacement body is coupled; 2 similar to Fig.l part-axial section, also with a designed as Axialdehnungs-Schlauchmembrankolben piston and a Totraum- displacement body, which is arranged fixed to the frame and due to the oscillatory drive movement of the working piston relative to this in the inner Working space of Axialdehnungs Schlauchmembra ⁇ kolbens engages;
  • 5 is a time graph of the discharge pressure p (bar) for a working piston of a volumetric pump over the time t (msec), for a construction without dead space displacement body.
  • FIG. 6 is a diagram corresponding to Figure 5, but for a construction with dead space displacement body.
  • This latter illustration applies in principle not only to movable, with the Arheitskolben coupled dead space displacement body (see Fig.l), but also for stationary fixed resting and by movement of the working space in this engaging dead space displacement body (see Figures 2 to 4) , this comes especially when using Axiaidehungs- hose diaphragm piston into consideration,
  • a working piston provided with an axial expansion hose diaphragm (briefly referred to as ASK in the upper dead center position) is coupled at its lower end to an oscillating drive device AVO shown here only schematically by a downward arrow.
  • the upper end of the Axialdehnngs-Schlauchmembrankolbens ASK is arranged fixed to the frame and surrounds a Ei ⁇ lasskanälc EK fed, designed as a check valve inlet valve EV ,
  • the downwardly extending, hohlylindharide section Z of Axialdehnngs-Schlauchmembrankolbens is mounted axially displaceable with a lubrication, not shown here in a housing bore GB .
  • an oscillating working space AR is formed, from which a coaxial delivery channel FK leads to an exhaust valve also designed as a check valve AV and to an outlet channel AK.
  • the dead space displacement body TK1 engaging in the working space AR according to FIG. 1 effects the control of the pressure increase as well as the pressure drop illustrated in FIG. 6, in other words a substantial improvement in the volumetric efficiency.
  • a gestreiftester dead space displacement body TK2a is provided, however, due to the arrangement of the working space AR within the Axialdehnngs- Schlauchmembrankolbens ASK and thus given the given by the pump drive relative movement between Axialdehnngs-Schlauchmembrankolben and dead space displacement body TK2a turn in engages the working space AR and causes a similar improvement of the volumetric efficiency.
  • particularly advantageous here is the reduction of the moving mass as a result of the frame-fixed dead space displacement body.
  • Inlet valve EV and outlet valve AV are formed analogously to the embodiment according to FIG. 1, but the connection between the working space and the outlet valve D is given by a longer coaxial channel KOK in the dead space displacement body and in the inlet valve. The associated reduction in dead space displacement can be kept practically within reasonable limits.
  • an inner flow and an outer flow of the working fluid with a flow deflection in an opening or end region of the dead space displacement body are provided for the displacement body.
  • a particularly intensive flushing of the working space and the valves in view of accumulation of residues and impurities, but also of kompresskms mitigating i-uftein Whyn after prolonged downtime allows.
  • a frame-fixed dead space displacement body TK2b is provided, with the corresponding dynamic advantages.
  • the fluid outlet takes place from the working space AR via transverse bores BQ immediately below the inlet valve EV and a short and therefore virtually harmless longitudinal channel LK.
  • valve body K embodied as a partial spherical shell is mounted pivotably about the ball center point relative to a correspondingly shaped valve seat.
  • a longitudinal guide means of a pivot guide SF and a centering ZG is connected to the valve body K by a tight-elastic snap-SV, so that for the pivot guide SF relatively light and vibration damping material comes into consideration.
  • the inner bore of the pivot guide is formed slightly toroidal with a suitable play sliding fit for the Zentrieglied ZG.
  • Such a construction has proven itself by high stability and wear resistance.

Landscapes

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

Abstract

L'invention concerne un système cylindre-piston pour une pompe hydraulique ou un moteur hydraulique, notamment de type volumétrique, qui comprend de préférence au moins un piston à membrane tubulaire à extension axiale, qui délimite au moins une chambre de travail à pulsation, située à l'intérieur. L'invention se caractérise en ce qu'un domaine d'application essentiel de pompes ou de moteurs de ce type est l'exploitation avec des fluides chargés en corps étrangers, en particulier des granulats abrasifs, ce qui requiert des machines à grand rendement, avec des pressions de service de l'ordre de quelque centaines à un millier de bars. La question du rendement, tant énergétique que volumétrique, revêt alors beaucoup d'importance. L'invention vise par conséquent à mettre au point des pompes ou des moteurs hydrauliques se caractérisant à la fois par des rendements élevés et par de longues durées de vie. A cet effet, il est prévu selon l'invention au moins un corps de réduction d'espace mort (TK1), qui coopère avec la chambre de travail à pulsation.
EP07804595.2A 2006-07-11 2007-07-11 Système cylindre-piston pour pompe hydraulique ou moteur hydraulique Active EP2038553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH11192006 2006-07-11
PCT/IB2007/001953 WO2008007209A2 (fr) 2006-07-11 2007-07-11 Système cylindre-piston pour pompe hydraulique ou moteur hydraulique

Publications (2)

Publication Number Publication Date
EP2038553A2 true EP2038553A2 (fr) 2009-03-25
EP2038553B1 EP2038553B1 (fr) 2020-07-08

Family

ID=38752552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07804595.2A Active EP2038553B1 (fr) 2006-07-11 2007-07-11 Système cylindre-piston pour pompe hydraulique ou moteur hydraulique

Country Status (7)

Country Link
US (1) US8794938B2 (fr)
EP (1) EP2038553B1 (fr)
JP (1) JP5502470B2 (fr)
CN (1) CN101523052B (fr)
CA (1) CA2657348C (fr)
RU (1) RU2476724C2 (fr)
WO (1) WO2008007209A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2005504C2 (nl) * 2010-10-12 2012-04-16 Innas Bv Hydraulische inrichting met een spiegelplaat.
AT512043B1 (de) * 2012-03-05 2013-05-15 Bhdt Gmbh Hochdruckeinrichtung für flüssige Medien
WO2014191130A2 (fr) * 2013-05-29 2014-12-04 Magna Powertrain Bad Homburg GmbH Soupape en manchon à bille et à cylindre
DE102013219439A1 (de) * 2013-09-26 2014-11-27 Continental Automotive Gmbh Ventileinrichtung für eine Hochdruckpumpe
US10995865B2 (en) 2015-11-11 2021-05-04 Graco Minnesota Inc. Piston ball guide for a ball pump
EP3246565B1 (fr) 2016-05-19 2019-09-18 Innas B.V. Dispositif hydraulique
EP3246567B1 (fr) 2016-05-19 2022-03-09 Innas B.V. Dispositif hydraulique
EP3246566B1 (fr) 2016-05-19 2018-12-19 Innas B.V. Dispositif hydraulique, procédé de fabrication d'un dispositif hydraulique et groupe de dispositifs hydrauliques
US11572876B2 (en) 2017-08-30 2023-02-07 Graco Minnesota Inc. Pump piston
EP4083424B1 (fr) 2021-04-29 2023-11-15 Innas B.V. Dispositif hydraulique

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US3227093A (en) * 1964-02-03 1966-01-04 John F Taplin Piston pump having rolling diaphragm
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CH424402A (de) * 1964-08-03 1966-11-15 Burckhardt Ag Maschf Konzentrisches Saug- und Druckventil
US3375759A (en) * 1966-05-18 1968-04-02 Bourns Inc Rolling-diaphragm pump
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FR2375466A1 (fr) * 1976-07-30 1978-07-21 Dba Pompe hydraulique
US4172465A (en) * 1977-11-07 1979-10-30 Conbraco Industries, Inc. Check valve
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JPS5892485U (ja) * 1981-12-18 1983-06-22 株式会社井上ジャパックス研究所 ポンプ
DE3446914A1 (de) * 1984-12-21 1986-07-03 Ott Kg Lewa Membranpumpe mit hydaulisch angetriebener rollmembran
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Also Published As

Publication number Publication date
RU2009104351A (ru) 2010-08-20
JP5502470B2 (ja) 2014-05-28
CA2657348C (fr) 2015-06-16
CN101523052A (zh) 2009-09-02
WO2008007209A2 (fr) 2008-01-17
EP2038553B1 (fr) 2020-07-08
CN101523052B (zh) 2014-08-27
RU2476724C2 (ru) 2013-02-27
JP2009542976A (ja) 2009-12-03
US20100119394A1 (en) 2010-05-13
CA2657348A1 (fr) 2008-01-17
WO2008007209A3 (fr) 2008-02-28
US8794938B2 (en) 2014-08-05

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