EP0604445B1 - Membranspeicher mit befestigungsring - Google Patents

Membranspeicher mit befestigungsring Download PDF

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Publication number
EP0604445B1
EP0604445B1 EP92916264A EP92916264A EP0604445B1 EP 0604445 B1 EP0604445 B1 EP 0604445B1 EP 92916264 A EP92916264 A EP 92916264A EP 92916264 A EP92916264 A EP 92916264A EP 0604445 B1 EP0604445 B1 EP 0604445B1
Authority
EP
European Patent Office
Prior art keywords
housing
hydraulic accumulator
connecting part
holding part
accumulator according
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 - Lifetime
Application number
EP92916264A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0604445A1 (de
Inventor
Norbert Weber
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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology GmbH
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 Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP0604445A1 publication Critical patent/EP0604445A1/de
Application granted granted Critical
Publication of EP0604445B1 publication Critical patent/EP0604445B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • F15B1/14—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery by means of a rigid annular supporting member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3156—Accumulator separating means having flexible separating means characterised by their attachment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F15B2201/411—Liquid ports having valve means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/43—Anti-extrusion means
    • F15B2201/435—Anti-extrusion means being fixed to the separating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/60—Assembling or methods for making accumulators

Definitions

  • the invention relates to a hydraulic accumulator with a partition arranged in a housing which separates a liquid space from a gas space in the housing and which is held by means of a holding part which is connected to an annular connecting part which is welded to the housing.
  • Such a hydraulic accumulator is known from DE-OS 34 04 897.
  • the holding part and the connecting part are ring-shaped, the holding part holding the dividing wall being inserted into it with the formation of a press fit with a conically shaped wall of the housing and with its side facing the gas space being in contact with the connecting part, which means an electron beam welding process is firmly connected to the housing.
  • the press fit caused by the conicity of the housing wall is necessary in order to avoid movement of the holding part with the partition wall towards the liquid space, provided the gas space has a corresponding underneath Has the amount of gas under pressure.
  • the holding part is held in position on the gas side by means of the connecting part in contact with it.
  • the invention has for its object to provide a hydraulic accumulator that is inexpensive to manufacture and in which it is achieved with certainty that the partition is held securely by the holding part in every operating state of the hydraulic accumulator.
  • This problem is solved by a hydraulic accumulator with the features of claim 1.
  • the holding part at least partially encompasses the connecting part, the holding part is held in its position via the connecting part in every operating state of the hydraulic accumulator and can neither move to the gas space nor to the liquid space Carry out so that the partition also maintains its position within the holding part, and does not separate from the holding part.
  • the housing wall can also be cylindrical at the location of the holding part and the holding part with partition can be inserted loosely into the housing, both of which contribute to the fact that the manufacturing costs for a hydraulic accumulator can be further reduced.
  • the holding part and the connecting part are preferably annular.
  • the holding part is made of plastic and the connecting part is made of steel, the plastic holding part pressing parts of the partition gas-tight against the housing.
  • the holding parts previously made of steel in the form of clamping rings are, on the one hand, complex and expensive to manufacture and, on the other hand, they are not always able to adapt to the housing parts of the housing, which are often not completely round, which leads to leaks. This is avoided when using a plastic holding part.
  • DE-OS 34 04 897 discloses a plastic clamping ring made of a glass fiber reinforced polyamide 66 (polyhexamethylene adipinamide) with a glass fiber content of 45 to 55%.
  • This well-known plastic clamping ring is suitable for low and high operating temperatures of the hydraulic accumulator in the range of about - 40 ° C to + 120 ° C.
  • the coefficient of thermal expansion between the steel material and the polyamide 66 is about 1: 2, it still happens Leaks and a failure of the hydraulic accumulator when the temperature range mentioned is left.
  • a polyarylamide with up to 60% glass fiber content is therefore preferably used for the holding part, which has approximately the same thermal expansion coefficient as steel.
  • the solution according to the invention can thus be used for any hydraulic accumulator, regardless of the temperature range in which it operates, without it affecting the function of the hydraulic accumulator greatly different expansion or shrinkage of the plastic holding part compared to the housing comes.
  • the glass fiber-reinforced polyarylamide that can be used has an increased modulus of elasticity of up to 23,000 N / mm2, so that the plastic holding part, which can be produced in an injection molding process, has high rigidity and dimensional stability.
  • the annular holding part has notches and a groove for engagement with the connecting part and has a groove for receiving the bead-shaped edge of the partition. Because of this configuration, the holding part can be easily snapped onto the connecting part and the partition is securely held by the holding part.
  • the holding part preferably has a bevel on its side facing away from the partition wall and on its side facing the housing, which serves as an assembly aid.
  • the housing has an abutment for the partition, the housing supports the secure fixing of the partition in the holding part.
  • the connecting part in the interior of the housing covers the interface of two shells which essentially form the housing and can be connected to one another along the interface by means of a welding process, in particular an electron beam welding process, in which the connecting part is connected to the Housing is connectable.
  • the hydraulic accumulator shown in FIG. 1 is a so-called membrane accumulator with a partition 12 arranged in a housing 10 in the form of an elastic, walkable membrane.
  • the partition 12 separates the interior of the housing 10 into a liquid space 14 and a gas space 16. Both the liquid space 14 and the gas space 16 each have a connection 18 or 20, by means of which the hydraulic accumulator on pipes of a hydraulic system (not shown) ) can be connected.
  • Comparable hydraulic accumulators with the features described so far belong to the prior art, so that in the following the hydraulic accumulator is only explained to the extent that it is necessary to illustrate the invention.
  • the housing 10 as viewed in the direction of FIG. 1, consists of an upper 22 and a lower housing shell 24 which abut one another along a seam 26. Along this interface 26, the two shells 22 and 24 can be connected to one another to form the housing 10 by means of an electron beam welding process, the weld seam being shown in FIG. 1 with the reference number 28.
  • the holding part 30 with the partition 12 and the connecting part 32 are arranged in the interior of the housing 10.
  • the connecting part 32 forms a ring made of steel, the height of which is dimensioned such that the interface 26 in the interior of the housing is covered with a protrusion.
  • the holding part 30 is also ring-shaped and has on its side facing the connecting part 32 a groove 34 (see FIG. 2) which is essentially rectangular in cross section and which has two recesses 36 of circular cross section in the corners of its groove base Has increased elasticity of the individual components of the holding part 30.
  • the groove 34 is formed in such a way that the steel ring 32 can be easily accommodated in it, the holding part 30 being able to be snapped onto the connecting part 32 via the groove 34.
  • the holding part 30 On its side facing the gas space 16, the holding part 30 has continuous recesses in the form of notches 38 which are rectangular in cross-section and which are guided at equal distances from one another longitudinally around the holding part 30.
  • the depth of the notches 38 is dimensioned such that it is approximately half the height of the annular holding part 30.
  • the notches 38 end in a fictitious straight line 39, which connects the respective end of these notches 38 with the groove 34, at the point which forms the transition from the groove bottom to the groove side wall, which faces the groove 40 adjacent.
  • the holding part 30 On its side facing the liquid space 14, which faces the inner wall of the housing, the holding part 30 has a groove 40 into which the bead-shaped edge 42 of the separating membrane 12 engages. In order to support this bead-shaped edge 42 and to avoid that the separating membrane 12 slides out of the groove 40 under stress, the holding part 30 has a thickening 44 at its lower end as seen in FIG. 1.
  • an annular shoulder 46 is provided at the same height along the inner wall of the housing and forms a kind of abutment for the partition 12. Thanks to the paragraph 46 and the thickening 44, the edge 42 of the separating membrane 12 is securely fixed in its edge-side position by the annular holding part 30.
  • the thickening 44 has rounded transitions along which the partition 12 can lay down in operation without being damaged.
  • the holding part 30 is made of plastic in the form of a polyarylamide with up to 60% glass fiber content and can be produced by an injection molding process of the usual type.
  • the holding part On its side facing away from the partition 12 and on its side facing the housing 10, the holding part has an annular bevel 48 (see FIG. 2) which, when seen in FIG. 2, forms an acute angle with the vertical.
  • This bevel 48 forms an assembly aid when the holding part 30 is snapped in and out onto or from the connecting part 32.
  • another glass fiber reinforced plastic can also be used, for example a polyamide with 40 to 50% glass fiber content.
  • the partition 12 can be loosely inserted into the interior of the housing 10 together with the holding part 30 and the connecting part 32. Thanks to the shoulder 46 in the housing wall, these parts remain in their position shown in FIG. 1 during assembly, whereby after joining the two shells 22 and 24 and the subsequent electron beam welding, the connecting part 32 is firmly welded to the housing 10 along the interface 26.
  • the invention can also be used for other hydraulic accumulators be, for example for a bladder accumulator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Centrifugal Separators (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Medicinal Preparation (AREA)
  • Materials For Medical Uses (AREA)
EP92916264A 1991-09-21 1992-07-23 Membranspeicher mit befestigungsring Expired - Lifetime EP0604445B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4131524 1991-09-21
DE4131524A DE4131524A1 (de) 1991-09-21 1991-09-21 Membranspeicher mit befestigungsring
PCT/EP1992/001679 WO1993006374A1 (de) 1991-09-21 1992-07-23 Membranspeicher mit befestigungsring

Publications (2)

Publication Number Publication Date
EP0604445A1 EP0604445A1 (de) 1994-07-06
EP0604445B1 true EP0604445B1 (de) 1995-11-08

Family

ID=6441197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92916264A Expired - Lifetime EP0604445B1 (de) 1991-09-21 1992-07-23 Membranspeicher mit befestigungsring

Country Status (11)

Country Link
EP (1) EP0604445B1 (es)
JP (1) JP3179490B2 (es)
AT (1) ATE130076T1 (es)
AU (1) AU2349992A (es)
CA (1) CA2105084C (es)
DE (2) DE4131524A1 (es)
DK (1) DK0604445T3 (es)
ES (1) ES2079199T3 (es)
FI (1) FI932305A0 (es)
NO (1) NO302434B1 (es)
WO (1) WO1993006374A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355435B3 (de) * 2003-11-27 2005-05-19 Hydac Technology Gmbh Hydrospeicher

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116482A1 (de) * 1991-05-21 1992-11-26 Hydac Technology Gmbh Verfahren zum messen des druckes eines gases in einem gasdruckspeicher und vorrichtung zum durchfuehren desselben
DE19633644A1 (de) * 1996-08-21 1998-03-05 Behrens Ag I K C Dämpfungseinrichtung für das hydraulische Antriebssystem einer Stanzmaschine
DE19706427A1 (de) 1997-02-19 1998-08-20 Itt Mfg Enterprises Inc Druckmittelspeicher
ATE209997T1 (de) * 1997-06-06 2001-12-15 Hydac Technology Gmbh Verfahren zum herstellen eines membranspeichers
EP0980981B1 (de) 1998-08-17 2003-11-26 Continental Teves AG & Co. oHG Druckmittelspeicher
DE19911030A1 (de) * 1998-08-17 2000-02-24 Continental Teves Ag & Co Ohg Druckmittelspeicher
DE102008039960A1 (de) 2007-09-05 2009-03-12 Continental Teves Ag & Co. Ohg Bremssystem für ein Kraftfahrzeug
DE102011116240A1 (de) 2011-10-18 2013-04-18 Hydac Technology Gmbh Hydrospeicher
DE102017006064A1 (de) * 2017-06-27 2018-12-27 Hydac Technology Gmbh Hydrospeicher

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2325844C3 (de) * 1973-05-22 1982-01-21 Daimler-Benz Ag, 7000 Stuttgart Hydropneumatischer Druckspeicher
DE3142390A1 (de) * 1981-10-26 1983-05-26 Alfred Teves Gmbh, 6000 Frankfurt Druckspeicher
DE3404897A1 (de) * 1984-02-11 1985-08-14 Integral Hydraulik & Co, 4000 Düsseldorf Hydrospeicher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355435B3 (de) * 2003-11-27 2005-05-19 Hydac Technology Gmbh Hydrospeicher

Also Published As

Publication number Publication date
NO302434B1 (no) 1998-03-02
DE59204279D1 (de) 1995-12-14
NO940988D0 (no) 1994-03-18
JPH06510839A (ja) 1994-12-01
JP3179490B2 (ja) 2001-06-25
WO1993006374A1 (de) 1993-04-01
CA2105084A1 (en) 1993-03-22
CA2105084C (en) 2003-04-08
AU2349992A (en) 1993-04-27
ATE130076T1 (de) 1995-11-15
FI932305A (fi) 1993-05-19
NO940988L (no) 1994-03-18
ES2079199T3 (es) 1996-01-01
FI932305A0 (fi) 1993-05-19
DK0604445T3 (da) 1996-02-19
EP0604445A1 (de) 1994-07-06
DE4131524A1 (de) 1993-04-01

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