EP2588762A1 - Druckspeicher und einsatzteil für einen druckspeicher - Google Patents
Druckspeicher und einsatzteil für einen druckspeicherInfo
- Publication number
- EP2588762A1 EP2588762A1 EP11727121.3A EP11727121A EP2588762A1 EP 2588762 A1 EP2588762 A1 EP 2588762A1 EP 11727121 A EP11727121 A EP 11727121A EP 2588762 A1 EP2588762 A1 EP 2588762A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- subspace
- pressure accumulator
- housing
- fluid
- holding
- 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
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
-
- 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
- F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
-
- 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
- F15B2201/3158—Guides for the flexible separating means, e.g. for a collapsed bladder
Definitions
- the invention relates to a pressure accumulator comprising a housing, a first sub-space arranged between the housing and a flexible separating membrane, a second sub-space arranged between the separating membrane and a supporting body, and a head part adjoining the second sub-space and forming the closure of the housing the first subspace with a first fluid and the second subspace with a second fluid can be filled, wherein the first and the second subspace vary by movements of the separation membrane depending on the respective filling state in their respective size, and wherein at the head part te redesign is provided, on which the opening edge of the separation membrane is anchored.
- Such an accumulator is known from DE 101 1 3 415 A1.
- a flexible separating element is arranged in a storage housing, formed by a pipe end piece, and surrounds a support body having fluid passages.
- the support body has at least sections on a non-circular cross-sectional shape.
- the separating element is anchored to form a seal on the storage housing so that each separate receiving spaces are formed on the outside and inside of the separating element.
- a centrally located, through bore forms a passage leading to the internal receiving space of the storage for a storage medium.
- a gas valve is provided for filling the outside gas space.
- the known pressure accumulator can be used for energy storage, for example in connection with vehicle suspensions, or else as a pulsation damper. Furthermore, the known solution is particularly suitable for damping pressure peaks in hydraulic or other fluid power systems. For use as an accumulator for storage media in the form of chemically aggressive fluids, such as urea-water solution, the known solution leaves nothing to be desired.
- a pressure accumulator comprising a container main body with an outer tube of cylindrical shape, at one end of a side plate and at the other end a lid is arranged, at least one inlet opening and an outlet opening, which are formed on the outer tube, and a bladder or A membrane for dividing the interior of the container main body into a gas chamber and a liquid chamber, wherein an opening of the bubble is sealed by the lid.
- An insert is arranged to project into the bladder for the purpose of reducing the volume of the gas chamber.
- the insert is formed of a foot part, a middle part and a head part, wherein the head part is kept in contact with the bottom of the membrane, which makes it possible to prevent damage to the membrane by repeated contraction. When compressed, the bladder or membrane rests against the insert.
- Pressure accumulators of this type are widely used in various sizes and constructions to receive and dispense varying volumes of respective fluids that are under the operating pressure of a fluid system connected to the fluid side, the fluid being at a pressure of the working gas at its gas side Bubble forms a pressure pad.
- the reliability of the pressure accumulator depends primarily on the usually made of a plastic material, especially butyl, existing from memory bladder, which is not only exposed to mechanical stresses in operation, but should also be resistant to chemically aggressive storage fluids. As has been shown, it is not yet possible in connection with aggressive fluids, such as urea-water solutions, to ensure a trouble-free life of sufficient length during continuous operation, for example over 20,000 hours.
- urea injection is increasingly used in automotive engineering to reduce the nitrogen oxides (NOx) emissions by injecting into the exhaust gas flow of internal combustion engines ,
- the invention has the object to provide a pressure accumulator available, which is characterized in particular in connection with aggressive storage media by improved reliability and ease of installation.
- a pressure accumulator having the features of claim 1 in its entirety.
- the head part has a connectable to the housing cover part with inner wall parts in the form of a concentric to the axis of the housing spherical cap, and that within the cover part of the holding body is arranged such that between its outer wall in the form of spherical surface parts and the inner wall parts the lid part is formed a gap for receiving a bordering on the edge of the opening edge region of the separation membrane.
- the housing typically has a head part which adjoins the second subspace and forms the closure of the housing.
- the housing is expediently cup-shaped, wherein the first part is arranged on the bottom side.
- a connection device for the second fluid can be provided in the head part.
- a particularly secure anchoring of the separating membrane can be achieved if the holding body has an annular groove machined into the outer wall in an area axially offset from its holding part in the direction of the connecting device, in which an edge bead surrounding the edge of its opening engages for anchoring the separating membrane.
- connection device has a screw socket which engages through an opening concentric to the central axis of the lid part and which pulls the holding body against the inner wall of the lid part by screwing with the cover part and clamps the edge region of the separating membrane located in the gap.
- the invention further comprises an insert part for a pressure accumulator comprising a head part forming the closure of a housing, on which a holding body for anchoring the opening edge of a separating membrane is provided, and a supporting body for abutment of the separating membrane, wherein the holding body forms a holding part, on which the Support body is arranged, which is characterized in that the holding body forms a circular cylinder in the region of the holding part, on the edge region of which one or more latching elements are formed, which are provided with counter-elements. Mentes on the support body form a this anchoring snap connection.
- the arrangement may be such that the holding body forms a circular cylinder in the region of the holding part, on the edge region of which one or more latching elements are formed which form a snap-in connection with counter-elements on the supporting body.
- This type of anchoring of the support body is particularly easy to install and allows low production costs.
- the locking elements can be offset from the end edge of the outer wall of the holding part and formed by depressions of the outer wall of the holding part, in which a bead-like, radially inwardly projecting projection on the inside of the support body can be snapped.
- the latching elements on the inner wall of the holding member may be formed by a recess axially remote from its end edge and a radially inwardly projecting, adjoining the end edge projection which can be latched with counter-elements of distributed over the circumference of the opening of the support body latching fingers.
- the assembly is particularly simple and convenient. The same applies to embodiments in which the locking takes place on the outside of the holding part. Also in this case, individual locking fingers may be provided at the end edge of the support body.
- the pressure accumulator according to the invention comprises a housing, an insert part according to the invention inserted in the housing, an intermediate part between the housing and a flexible separation membrane. arranged on the first subspace, and arranged between the separation membrane and the support body second subspace, wherein the head part adjacent to the second subspace, wherein the holding body of the opening edge of the separation membrane is anchored, wherein the first subspace with a first fluid and the second subspace with a second fluid can be filled, and wherein the first and the second subspace vary in their respective size by movements of the separation membrane as a function of the respective filling state.
- the support body has the shape of a rotating body, which is rounded at the end facing the first compartment and formed closed and provided with at least one lateral wall opening as a passage point between the second and third compartment.
- the holding body has the shape of a bell whose bell casing surrounds a fourth subspace adjacent to the third subspace.
- the support body is preferably formed from a plastic material.
- this glass fiber-reinforced polyarylamide IXEF ® a material, which is distinguished over conventional glass fiber-reinforced plastics by a smooth, closed outer skin can be provided. Because of these properties can also be advantageous the holding body and / or the connecting device may be formed from this material.
- the pressure accumulator is designed as a hydropneumatic bladder storage for a gaseous second fluid as a working medium and / or a liquid first fluid as a storage medium.
- the pressure accumulator for filling a storage medium in the form of a chemically aggressive fluid, such as urea-water solution is formed. This allows use of the pressure accumulator according to the invention in the urea injection, especially in the automotive field.
- FIG. 1 shows a longitudinal section of an exemplary embodiment of the pressure accumulator according to the invention, which is only slightly enlarged compared to a practical embodiment
- FIG. 2 shows a longitudinal section of an insert part according to the invention comprising a holding body with supporting body fixed thereto;
- FIG. 3 a comparison with FIG. 2 greatly enlarged detail of
- Fig. 4 is a similar to Fig. 2 longitudinal section, in which a modified example of the latching of the support body according to the invention is shown on the holding body.
- the invention will be explained below with reference to the example of the use of the pressure accumulator for a system of urea injection.
- a memory housing is denoted by 2, which has the shape of a large cylindrical pot on the closed bottom 4, a flow opening 6 is located on the whole.
- the aligned on the central longitudinal axis 10 opening 6 allows the supply and removal of a first fluid, such as a urea-water solution, to or from the first part 8, which is located in the housing 2 adjacent to the bottom 4.
- a screwed to the storage housing 2 head part 1 2 forms the fluid-tight closure of the upper, open end of the housing second
- the head part 12 has an outer cover part 14 on which the screw connection with the housing 2 is formed and which may consist of a metallic material, for example of aluminum, as may also be the case with the housing 2. Alternatively, the cover part 14 may also be formed from a structurally stable plastic material.
- the cover part 14 has a central, concentric with the axis 10 opening 16. At a small distance from the opening 16, the cover part 14 inner wall parts in the form of a concentric to the axis 10 spherical cap 18.
- the head part 12 has a holding body 20, with an integrally located thereon, the connecting means for the second fluid forming screw 22, which passes through the opening 16 of the cover member 14 and by means of which, in cooperation with a nut 24 of the holding body 20 within the lid part 14 is fixed.
- Screw socket 22 extends a central fluid channel 26 to fill a third subspace 28 with the standing under bias pressure working fluid as a second fluid.
- a located within the channel 26 valve insert is not shown in the drawing.
- the holding body 20 has the shape of a bell whose shell surrounds a fourth subspace 30 which adjoins the third subspace 28.
- the bell shell forms on its outer wall spherical surface parts 34 which define a clamping gap 36 for the anchoring region 38 located in the gap 36 of a separation membrane 40 between itself and the cap 18 of the cover part.
- the bladder formed from a plastic suitable for such pressure accumulators, such as butyl, forms the flexible separating membrane 40 between the first subspace 28 and the second subspace 54.
- the holding body 20 has an annular groove 42 between the end of the outer spherical surface part 34 and the screw neck 22, into which for particularly secure anchoring of the separation membrane 40 engages an edge rim 44 surrounding its opening edge.
- the holder body 20 forms with which located within the plane formed by the separating membrane 40 bubble cap, a holding portion 46 for anchorage of a projecting into the interior of the bladder support body 48.
- This is formed of a sufficiently structurally rigid plastic material, with glass fiber-reinforced polyarylamide IXEF ® as has proved particularly well.
- the support body 48 has the shape of a rotational body with a spherically rounded, closed lower end located at a distance from the bottom 4 of the housing 2 and surrounds a third subspace 28 adjoining the fourth subspace 30.
- upper end 50 of the support body 48 is on the holding part 46 by means of a
- the support body 48 is approximately V-shaped in longitudinal section and has lateral wall openings 52 for the passage of the working fluid to the second compartment 54, which adjoins the third compartment 28.
- FIG. 2 and 3 The details of the insert for a pressure accumulator are most clearly Figures 2 and 3 can be removed.
- depressions 56 and 60 are formed at a small distance from the end edge 56 of the holding part 46, in which the end region of the support body 48 is receivable, wherein a radially inwardly projecting projection 62 of the support body 48 can be snapped into the recess 60.
- the holding body 20 is formed in the present example, as well as the support body 48 and located in the channel 26 of the nozzle 22 valve made of glass fiber reinforced polyarylamide IXEF ® , so that the insert part comprising the holding body 20 with the support body 48 fixed thereto a completely made of plastic unit forms.
- the first subspace 8 of the pressure accumulator is filled by means of a pump with the urea-water solution until an upper value of the system pressure is reached and the pump shuts off.
- the accumulator pressure forces the metered injection storage medium into the system.
- the pump switches on again. If it should come to unwanted pressure excesses and a certain limit of the volume increase of the first subspace 8 is exceeded, the separation membrane 40 applies to the support body 48 and is thereby protected against overloading and damage.
- FIG. 4 shows a variant of the design of the insert part, wherein the latching elements are now arranged on the inner wall of the holding part 46 of the holding body 20. As shown in FIG. 4, this is a recess 64 axially remote from the end edge 56 and a radially inwardly projecting, adjoining the end edge 56 projection 66.
- the counter-elements on the part of the support body 48 are formed by retaining fingers 68, over the Scope of the opening of the support body 48 are arranged distributed.
- the latching on the outside of the holding member 46 of the holding body 20, the counter-elements of the support body 48 may be formed of individual, circumferentially distributed locking fingers.
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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010025627A DE102010025627A1 (de) | 2010-06-30 | 2010-06-30 | Hydropneumatischer Blasenspeicher |
PCT/EP2011/002990 WO2012000617A1 (de) | 2010-06-30 | 2011-06-17 | Druckspeicher und einsatzteil für einen druckspeicher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2588762A1 true EP2588762A1 (de) | 2013-05-08 |
EP2588762B1 EP2588762B1 (de) | 2015-04-15 |
Family
ID=44627293
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11727121.3A Active EP2588762B1 (de) | 2010-06-30 | 2011-06-17 | Druckspeicher und einsatzteil für einen druckspeicher |
EP11726353.3A Active EP2588761B1 (de) | 2010-06-30 | 2011-06-17 | Druckspeicher |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11726353.3A Active EP2588761B1 (de) | 2010-06-30 | 2011-06-17 | Druckspeicher |
Country Status (4)
Country | Link |
---|---|
US (1) | US9133859B2 (de) |
EP (2) | EP2588762B1 (de) |
DE (1) | DE102010025627A1 (de) |
WO (2) | WO2012000617A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015010562A1 (de) * | 2015-08-12 | 2017-02-16 | Hydac Filtertechnik Gmbh | Filtervorrichtung nebst Filterelement |
US20220413200A1 (en) | 2019-12-20 | 2022-12-29 | L.E.S.S. Ltd | Optical waveguide-based side illuminating assembly, elongated reinforcing structure, and receptacle |
CN112032454B (zh) * | 2020-09-21 | 2022-05-17 | 北京航空航天大学 | 气液耦合式流体脉动消振器 |
CN112555559B (zh) * | 2020-11-24 | 2022-04-26 | 江苏大学 | 一种泵入口非均匀来流抑制装置 |
FR3119211A1 (fr) * | 2021-01-26 | 2022-07-29 | Dominique JOSSE | La présente invention concerne un dispositif destiné à gérer le stockage d’un fluide dans des conditions de rendement et/ou sécurité de fonctionnement accrue. |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2401792A (en) * | 1944-01-12 | 1946-06-11 | Simmonds Aerocessories Inc | Accumulator |
US3003522A (en) * | 1958-04-12 | 1961-10-10 | Rohacs Etienne | Means for damping pulsations in fluid pipelines |
GB877800A (en) * | 1958-04-21 | 1961-09-20 | Applic Mach Motrices | Improvements in and relating to means for damping pulsations in fluid pipe-lines |
FR73894E (fr) * | 1958-07-30 | 1960-09-12 | Perfectionnements aux enceintes de fluides pouvant être mises sous pression et comportant un séparateur | |
US3195577A (en) * | 1961-11-01 | 1965-07-20 | Greer Hydraulics Inc | Fluid pressure accumulator |
NL287097A (de) * | 1961-12-29 | |||
FR1408181A (fr) * | 1964-01-24 | 1965-08-13 | Olaer Patent Co | Organe de guidage pour séparateur souple dans un réservoir de pression |
US3230976A (en) * | 1964-05-19 | 1966-01-25 | Mercier Jean | Pressure container |
US3279499A (en) * | 1964-11-06 | 1966-10-18 | Mercier Jean | Pressure vessels |
US3319420A (en) * | 1965-07-20 | 1967-05-16 | Olaer Patent Co | Pressure vessel |
FR2110720A5 (de) * | 1970-10-28 | 1972-06-02 | Mercier J | |
US3893485A (en) * | 1971-09-07 | 1975-07-08 | Ernest W Loukonen | Pulsation dampener |
JPS5357518A (en) * | 1976-11-04 | 1978-05-24 | Nobuyuki Sugimura | Bladder type accumulators provided with builttin type gas bombs in their gas chambers |
US4166478A (en) * | 1977-12-21 | 1979-09-04 | Kazuo Sugimura | Accumulator having a bladder to be filled with liquid |
US4448217A (en) * | 1982-09-27 | 1984-05-15 | The Normand Trust | Accumulator having bladder in expansion limiting contact with casing |
FR2550283B1 (fr) * | 1983-08-04 | 1988-03-18 | Commissariat Energie Atomique | Accumulateur hydropneumatique |
US4628964A (en) * | 1985-05-08 | 1986-12-16 | Nobuyuki Sugimura | Background device for separating member in accumulator chamber |
US4610369A (en) * | 1985-10-07 | 1986-09-09 | Mercier Jacques H | Pressure vessel |
JPH0645681Y2 (ja) * | 1987-04-07 | 1994-11-24 | 宣行 杉村 | ブラダ内に入子を設けたアキュムレータ |
US5427152A (en) * | 1991-09-21 | 1995-06-27 | Hydac Technology Gmbh | Hydraulic accumulator with dividing wall supported by connecting and retaining parts |
DE19524920A1 (de) * | 1995-07-08 | 1997-01-09 | Bosch Gmbh Robert | Schwingungsdämpfer zur Dämpfung von Flüssigkeitsschwingungen in einem hydraulischen, schlupfgeregelten Bremssystem von Kraftfahrzeugen |
US6131613A (en) * | 1996-08-26 | 2000-10-17 | Aeroquip Corporation | Noise suppressor |
DE10113415A1 (de) * | 2001-03-20 | 2002-10-02 | Hydac Technology Gmbh | Hydropneumatischer Druckspeicher |
DE10215846A1 (de) * | 2002-04-10 | 2003-11-06 | Hydac Technology Gmbh | Hydrospeicher, insbesondere Membranspeicher |
-
2010
- 2010-06-30 DE DE102010025627A patent/DE102010025627A1/de not_active Withdrawn
-
2011
- 2011-06-17 EP EP11727121.3A patent/EP2588762B1/de active Active
- 2011-06-17 WO PCT/EP2011/002990 patent/WO2012000617A1/de active Application Filing
- 2011-06-17 US US13/261,550 patent/US9133859B2/en active Active
- 2011-06-17 EP EP11726353.3A patent/EP2588761B1/de active Active
- 2011-06-17 WO PCT/EP2011/002989 patent/WO2012000616A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012000617A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2588762B1 (de) | 2015-04-15 |
WO2012000616A1 (de) | 2012-01-05 |
DE102010025627A1 (de) | 2012-01-05 |
WO2012000617A1 (de) | 2012-01-05 |
EP2588761A1 (de) | 2013-05-08 |
US20130126026A1 (en) | 2013-05-23 |
EP2588761B1 (de) | 2014-07-16 |
US9133859B2 (en) | 2015-09-15 |
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