EP0604445A1 - Membranspeicher mit befestigungsring. - Google Patents
Membranspeicher mit befestigungsring.Info
- Publication number
- EP0604445A1 EP0604445A1 EP92916264A EP92916264A EP0604445A1 EP 0604445 A1 EP0604445 A1 EP 0604445A1 EP 92916264 A EP92916264 A EP 92916264A EP 92916264 A EP92916264 A EP 92916264A EP 0604445 A1 EP0604445 A1 EP 0604445A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- holding part
- hydraulic accumulator
- partition
- connecting part
- 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
Links
- 239000012528 membrane Substances 0.000 title description 7
- 238000005192 partition Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000010894 electron beam technology Methods 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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 move the holding part with the partition towards the liquid space
- the gas space has a corresponding un ter pressure of gas.
- the holding part is held in position on the gas side by means of the connecting part which is in contact with it.
- the connecting part which is in contact with it.
- it can move along the conical wall in the direction of the liquid space, and the partition wall can be released, which makes the hydraulic accumulator unusable.
- the pressing of the holding part into the housing is difficult to carry out and expensive because of the devices necessary for the pressing.
- 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 securely held by the holding part in each operating state of the hydraulic accumulator.
- the housing wall can be cylindrical at the location of the holding part and the holding part can be mixed.
- Partition can be inserted loosely into the housing, which both contributes to the fact that the manufacturing costs for a hydraulic accumulator are lower.
- the holding part and the connecting part are preferably of annular design.
- the retaining element is made of plastic and the connecting part is made of steel, the plastic retaining 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 (poly hexamthylenesdipinsmid) with a glass retention element of 45 to 55%.
- This well-known plastic clamping ring is suitable for low and high operating temperatures of the hydraulic safety device in the range of about - 40 ° C to + 120 ° C.
- the coefficient of thermal expansion between the steel material and the polyamide 63 is about 1: 2, it still happens Leakage and failure of the hydraulic accumulator if 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, irrespective of the temperature range in which it works, without it affecting the function of the hydraulic accumulator greatly different expansion or shrinkage of the plastic holding part compared to the housing.
- the glass fiber reinforced polyarylamide used has an increased modulus of elasticity of up to 23,000 N / mm 2 , so that the plastic which can be produced in an injection molding process
- Holding part has high rigidity and dimensional stability.
- the annular holding part has notches and a groove for engagement with the connecting cable and has a groove for receiving the bead-shaped edge of the partition. Because of this configuration, the holding part can be snapped onto the verbincuncstsil easily and the partition is held securely 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 a mounting aid.
- the housing has an abutment for the door wall, the housing supports the secure fixing of the partition in the cold part.
- the connecting part in the interior of the housing covers the interface of two shells which essentially form the housing and which can be connected to one another along the interface by means of a welding process, in particular an electron beam welding process, and at the same time the connecting part the housing is connectable.
- a welding process in particular an electron beam welding process
- FIG. 1 seen in an enlarged view in FIG. 1
- the hydraulic accumulator shown in FIG. 1 is a so-called membrane accumulator with a partition wall 12 arranged in a casing 10 in the form of an elastic, walkable membrane.
- the partition 12 separates the housing 10 in its interior into a liquid chamber 14 and into a gas chamber 15.
- Both the liquid chamber 14 and the gas chamber 16 each have a connection 18 or 20, by means of which the hydraulic accumulator sn 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 will only be explained to the extent that it is necessary to implement the invention.
- the housing 10 as seen in FIG. 1, consists of an upper 22 and a lower housing shell 24, which abut along a seam 26. Along this interface 26, the two scarves 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 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.
- 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 along 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 to 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 inside wall of the housing and forms a kind of abutment for the partition wall 12. Thanks to the paragraph 46 and the thickening 44, the edge 42 of the separating membrane 12 is securely fixed in its peripheral 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, which is cut off from the partition wall 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, 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 plastic holding part 30 presses the partition wall 12 gas-tight against the housing 10 and thus a reliable separation of the liquid space 14 from the gas space 16 is achieved.
- the inner wall of the housing 10 is cylindrical.
- 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 used, 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)
- Liquid Developers In Electrophotography (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Centrifugal Separators (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Medicinal Preparation (AREA)
- Materials For Medical Uses (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4131524A DE4131524A1 (de) | 1991-09-21 | 1991-09-21 | Membranspeicher mit befestigungsring |
DE4131524 | 1991-09-21 | ||
PCT/EP1992/001679 WO1993006374A1 (de) | 1991-09-21 | 1992-07-23 | Membranspeicher mit befestigungsring |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0604445A1 true EP0604445A1 (de) | 1994-07-06 |
EP0604445B1 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 (de) |
JP (1) | JP3179490B2 (de) |
AT (1) | ATE130076T1 (de) |
AU (1) | AU2349992A (de) |
CA (1) | CA2105084C (de) |
DE (2) | DE4131524A1 (de) |
DK (1) | DK0604445T3 (de) |
ES (1) | ES2079199T3 (de) |
FI (1) | FI932305A0 (de) |
NO (1) | NO302434B1 (de) |
WO (1) | WO1993006374A1 (de) |
Families Citing this family (10)
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 |
ES2169400T3 (es) * | 1997-06-06 | 2002-07-01 | Hydac Technology Gmbh | Procedimiento para fabricar un deposito con membrana integrada. |
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 |
DE10355435B3 (de) * | 2003-11-27 | 2005-05-19 | Hydac Technology Gmbh | Hydrospeicher |
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)
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 |
-
1991
- 1991-09-21 DE DE4131524A patent/DE4131524A1/de not_active Withdrawn
-
1992
- 1992-07-23 ES ES92916264T patent/ES2079199T3/es not_active Expired - Lifetime
- 1992-07-23 EP EP92916264A patent/EP0604445B1/de not_active Expired - Lifetime
- 1992-07-23 AU AU23499/92A patent/AU2349992A/en not_active Abandoned
- 1992-07-23 CA CA002105084A patent/CA2105084C/en not_active Expired - Lifetime
- 1992-07-23 JP JP50571193A patent/JP3179490B2/ja not_active Expired - Lifetime
- 1992-07-23 DK DK92916264.2T patent/DK0604445T3/da active
- 1992-07-23 DE DE59204279T patent/DE59204279D1/de not_active Expired - Lifetime
- 1992-07-23 WO PCT/EP1992/001679 patent/WO1993006374A1/de active IP Right Grant
- 1992-07-23 AT AT92916264T patent/ATE130076T1/de active
-
1993
- 1993-05-19 FI FI932305A patent/FI932305A0/fi unknown
-
1994
- 1994-03-18 NO NO940988A patent/NO302434B1/no not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9306374A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH06510839A (ja) | 1994-12-01 |
AU2349992A (en) | 1993-04-27 |
EP0604445B1 (de) | 1995-11-08 |
FI932305A (fi) | 1993-05-19 |
DK0604445T3 (da) | 1996-02-19 |
CA2105084C (en) | 2003-04-08 |
WO1993006374A1 (de) | 1993-04-01 |
NO302434B1 (no) | 1998-03-02 |
ATE130076T1 (de) | 1995-11-15 |
DE4131524A1 (de) | 1993-04-01 |
NO940988L (no) | 1994-03-18 |
ES2079199T3 (es) | 1996-01-01 |
CA2105084A1 (en) | 1993-03-22 |
DE59204279D1 (de) | 1995-12-14 |
FI932305A0 (fi) | 1993-05-19 |
JP3179490B2 (ja) | 2001-06-25 |
NO940988D0 (no) | 1994-03-18 |
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