EP0035427B1 - Verfahren zur Herstellung eines vorgespannten Druckspeichers und Druckspeicher gemäss diesem Verfahren - Google Patents

Verfahren zur Herstellung eines vorgespannten Druckspeichers und Druckspeicher gemäss diesem Verfahren Download PDF

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Publication number
EP0035427B1
EP0035427B1 EP81400246A EP81400246A EP0035427B1 EP 0035427 B1 EP0035427 B1 EP 0035427B1 EP 81400246 A EP81400246 A EP 81400246A EP 81400246 A EP81400246 A EP 81400246A EP 0035427 B1 EP0035427 B1 EP 0035427B1
Authority
EP
European Patent Office
Prior art keywords
shells
accumulator
annular
shoulder
belt
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
Application number
EP81400246A
Other languages
English (en)
French (fr)
Other versions
EP0035427A3 (en
EP0035427A2 (de
Inventor
Louis-Claude Porel
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.)
Rene Leduc & Fils Ets SA
Original Assignee
Rene Leduc & Fils Ets SA
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
Priority claimed from FR8004313A external-priority patent/FR2476768A1/fr
Priority claimed from FR8009781A external-priority patent/FR2481762A2/fr
Application filed by Rene Leduc & Fils Ets SA filed Critical Rene Leduc & Fils Ets SA
Publication of EP0035427A2 publication Critical patent/EP0035427A2/de
Publication of EP0035427A3 publication Critical patent/EP0035427A3/fr
Application granted granted Critical
Publication of EP0035427B1 publication Critical patent/EP0035427B1/de
Expired 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
    • F15B1/106—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means characterised by the way housing components are assembled
    • 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
    • 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
    • F15B2201/4155—Gas 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
    • F15B2201/43—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
    • 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
    • F15B2201/605—Assembling or methods for making housings therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49394—Accumulator making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/48—Shrunk fit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler

Definitions

  • the present invention relates to a method of manufacturing an oleo-pneumatic accumulator of the type consisting of an enclosure and a gas-fluid separator and to an oleo-pneumatic accumulator produced according to this method.
  • the enclosure is generally a metallic envelope.
  • the separator can be produced by a flexible membrane.
  • the object of the present invention is to transform the dynamic stresses to which the junction of the two parts of the enclosures, which cause the fatigue of the metal, is subjected, into a static stress, which eliminates the fatigue of the metal.
  • Document DE-A-2 532 807 discloses an assembly of two half-shells in a similar manner to that described in the aforementioned US-A-2,563,257 patent but by screwing the junction ring onto the two shells by means of threads having different pitches, so that the more the ring is screwed, the more it is itself prestressed. But here again, the prestressing being obtained only by screwing can only be very weak because blocking by seizing of the nets very quickly occurs and such prestressing cannot have a determined and precise value with respect to the separation forces generated. by the hydraulic pressure admitted into the accumulator.
  • the two shells are, according to the present invention, assembled with a prestress.
  • the present invention therefore relates to a process for manufacturing an oleo-pneumatic accumulator of the type comprising two shells assembled to one another with the interposition of a flexible membrane, in which the two shells are kept in contact one on the other by an annular tightening means surrounding the two contiguous edges of the two shells, said tightening means being associated with one of said shells and screwed onto the other of said shells and being prestressed along its longitudinal axis, characterized by the fact that the clamping means is subjected, before the assembly of said shells, to a preliminary prestressing generating, after the assembly of said shells, a force for bringing the two shells together, which is greater than the force maximum separation of the two shells resulting from the maximum internal pressure that the accumulator must receive (test pressure).
  • the invention also relates to an accumulator produced according to this method, the clamping means of which comprises at its axial ends annular shoulders against which a tensioning device is supported.
  • the two shells are assembled to each other by means of an external belt, previously tensioned; according to a second embodiment, the two shells are each provided with a skirt, one fitting into the other, one of the skirts having been previously tensioned.
  • this arrangement plays the role of a pressure relief valve which constitutes a safety device which prevents the accumulator from being subjected to a predetermined maximum pressure.
  • the invention also relates to a device for prior tensioning of the clamping means of such an accumulator 1.
  • the accumulator is constituted, as is known, by two shells 1 and 2 which, when assembled together, define an interior volume which is divided into two compartments 3 and 4, separated by a flexible membrane 5.
  • the shell 1 is closed by a plug 6 and the shell 2 is connected to a hydraulic pipe 7.
  • the plug 6 the volume 3 is filled with a pressurized gas; the volume 4 receives the hydraulic liquid coming from the pipe 7.
  • the flexible membrane 5 is provided at its edge with a heel 5a which ensures its fixing by pinching between the two shells 1 and 2.
  • the two shells 1 and 2 are not assembled by direct screwing of one on the other, but by means of a belt 8, which is subjected, before the assembly, at an elongation tension of a force greater than the force generated by the pressurization of the accumulator greater than that of its maximum operating pressure.
  • the belt 8 comprises a thread 8a, intended to receive the thread 1a of the shell 1 and a thread 8b, intended to receive the thread 2a of the shell 2.
  • the belt 8 also comprises an external shoulder 9 and a groove 10 in which a ring 11 is engaged. Between the two stops constituted by the shoulder 9 and the ring 11 are arranged the two elements of a hydraulic cylinder constituted by the body of the jack proper 12, which bears against the ring 11 and an annular piston 13, which bears against the shoulder 9, the parts 12 and 13 being concentric with the belt 8.
  • the lower shell 2 is then put in place by screwing its thread 2a onto the internal thread 8b of the belt 8; the membrane 5 is put in place; and the shell 1 is screwed by its thread 1a onto the other internal thread 8a of the belt 8, until the two shells 1 and 2 come into tight contact one against the other.
  • the hydraulic pressure supplied at 14 is then canceled, the ring 11 is removed, then the cylinder body 12 and the piston 13.
  • the belt 8 presses one against the other the two shells 1 and 2, the belt 8 constituting a fixing with preload.
  • the belt 8 is tensioned beforehand, by means of the same jack 12-13 (not shown) as that used for the device in FIG. 1; then the shell 1 is introduced from below into the belt 8, until the shoulders 15 and 16 are in contact; the membrane 5 is put in place; then the shell 2 is screwed by its thread 2a onto the thread 8b of the belt 8 until the shell 2 is tightened against the shell 1; the pressure is then released in the cylinder 12-13 and the latter is disassembled as above.
  • the prior extension force to which the belt 8 is subjected is determined so as to be greater than the extension force to which it will be subjected when the accumulator is subjected to the maximum bench test pressure, pressure which is itself higher than the maximum pressure of use of the accumulator.
  • the belt is an integral part of one of the shells, of the shell 1 in the case shown.
  • the shell is provided at its base with a skirt 17, which has a length substantially equal to that of the belt 8 in Figures 1 and 2.
  • This skirt 17 is provided at its base with an internal thread 17a.
  • the skirt 17 has an internal shoulder 19, provided with a groove intended to receive the heel 5a of the membrane 5.
  • the shell 2 is provided with a skirt 18 having practically the same length as the skirt 17, but being of a smaller diameter, so as to fit into the interior of said skirt 17.
  • the skirt 18 has a thread 18a, intended to be screwed onto the thread 17a and at its upper part a flat 20, intended to abut against the shoulder 19 and also comprising a groove for receiving the heel 5a of the membrane 5.
  • the skirt 17 is provided, like the belt 8, with a shoulder 9 and a groove 10, intended to receive the ring 11, so that the jack 12-13 (not shown) can be set in plaxis around the skirt 17, as it is placed around the belt 8.
  • the skirt 17 is tensioned beforehand by the jack 12-13 in a similar manner to that which has been described previously for FIGS. 1 and 2, then the shell 2 is screwed onto the shell 1 (with interposition of the membrane 5) until '' hard clamping of one on the other; then the pressure in the cylinder 12-13 is released and the latter is disassembled.
  • the two shells are then kept strongly pressed against each other, by the prestress created in the skirt 17.
  • this wedge is provided with a chamfer 21a and 21b, these two chamfers fitting into chamfers of corresponding shape formed in the edges of the shells 1 and 2.
  • the membrane 5 is provided with a heel 5a, which engages in a correspondingly shaped groove formed in the edge of the shell 1, so that said heel is pinched between the shell 1 and the wedge 21.
  • the underside of the wedge 21 rests by direct contact against the edge of the shell 2.
  • the external prestressing belt 22 comprises, like a test piece, a central part 22c of small section and two ends 22a and 22b of larger section in which the threads 8a and 8b are formed.
  • the lower shell 2 is screwed to the base of the belt 22, by means of its thread 2a, which engages in the thread 8b of the part 22b; then the wedge 21 is placed; then the membrane 5 is placed.
  • the belt 22 is tensioned, either by means of the jack described in FIG. 1 of the main patent, or by means of the jack which will be described below, in relation to FIG. 6.
  • the upper shell 1 is screwed into the belt 22, by means of its thread 1a, which engages in the thread 8a; then release the tension created by the jack and remove it.
  • the two shells 1 and 2 are then strongly tightened against each other by the tension created beforehand in the structure of the belt 22 to which its thinned median shape gives better elasticity characteristics.
  • the membrane 5 is held by pinching its heel 5a between the shell 1 and the wedge 21.
  • the hydraulic fluid under high pressure penetrates through the pipe 7 and lifts the membrane 5 by compressing the gas located in the enclosure 3.
  • This hydraulic pressure and the pressure of the gas (which is equal) tend to separate each other the shells 1 and 2 and the wedge 3; but these remain applied against each other, as long as the force created by this pressure remains less than the prior tension force to which the belt 22 has been subjected.
  • This device plays the role of a safety device, preventing the deterioration of the accumulator by an overpressure.
  • the liquid flowing between the wedge 21 and the belt 22 is discharged through one or more orifices 23 ', formed through the latter, which, in addition makes it possible to visualize the existence of a leakage rate.
  • Figure 6 shows the elongation device of the belt 22.
  • a crown 24 carrying two half-collars 25, by means of arms 26 articulated on axes 27, carried by the crown 24 (in FIG. 6, only a single half-collar 25, a single arm 26 and a single axis 27 have been shown).
  • the lower part of the base 24 constitutes a piston engaged in a cylinder body 28, comprising a pipe 29 opening into a chamber 30.
  • This cylinder 28 carries two half-collars 31 by means of two arms 32.
  • the lower shell 2 is placed on the base, then the wedge 21, the membrane 5 are put in place and the belt 22 is screwed onto the lower shell. Then the two arms 26 are folded down, so that the two half-collars 25 come to bear on the shoulder separating the parts 22c and 22b of the belt 22.
  • the two half-collars 31 are put in place, which have a shoulder coming to rest on the ends of the arms 32; the two half-collars 31 come to bear against the shoulder separating the parts 22c and 22b of the belt 22.
  • the high pressure is introduced into the chamber 30, which has the effect that the arms 32 and the half-collars 31 are biased in direction f 1 while the arms 26 and the half-collars 25 remain fixed: this elongates the belt 22.
  • the shell 1 is then screwed in and the pressure in the chamber 30 is released.

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  • 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)
  • Press Drives And Press Lines (AREA)
  • Control Of Transmission Device (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Eletrric Generators (AREA)

Claims (8)

1. Verfahren zur Herstellung eines öl-pneumatischen Druckspeichers jener Bauart, die zwei Schalen (1, 2) aufweist, die miteinander unter Zwischenlage einer geschmeidigen Membran (5) verbunden sind, bei welchem die beiden Schalen (1, 2), eine auf der anderen, durch ein ringförmiges Einspannmittel (8, 17, 22), das die beiden Ränder der Schalen (1, 2) aneinanderstossend umschliesst, in Verbund gehalten werden, besagtes Einspannmittel mit einer der beiden Schalen (1) vereinigt und auf der anderen Schale (2) aufgeschraubt und in seiner Längsachse vorgespannt ist, dadurch gekennzeichnet, dass das Einspannmittel (8, 17, 22) vor dem Zusammenbau besagter Schalen (1, 2) einer vorhergehenden Vorspannung unterworfen wird, die nach dem Zusammenbau besagter Schalen (1, 2) eine Kraft zur gegenseitigen Annäherung der beiden Schalen (1, 2) erzeugt, die grösser ist als die maximale Kraft zur Trennung der beiden Schalen, die sich aus dem maximalen Innendruck ergibt, den der Druckspeicher aufnehmen muss (Prüfdruck).
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das vorhergehende Vorspannen mittels eines hydraulichen Zylinders (12-13; 23-28) ausgeführt wird.
3. Nach dem Verfahren gemäss den Ansprüchen 1 und 2 hergestellter öl-hydraulischer Druckspeicher, dadurch gekennzeichnet, dass das Einspannmittel (8, 17, 22) an seinen achsialen Enden ringförmige Vorsprünge (9, 11; 22a, 22b) aufweist, gegen welche sich die Spannvorrichtung abstützt.
4. Öl-hydraulischer Druckspeicher nach Anspruch 3, dadurch gekennzeichnet, dass er aus zwei Schalen (1, 2) besteht, von denen jede mit einem Aussengewinde (1a, 2a) versehen ist, in welche die beiden Innengewinde (8a, 8b) eines Einspannmittels in Form eines Gürtels (8) eingreifen, und welches dazu bestimmt ist, die beiden Schalen (1, 2) zu verbinden; besager Gürtel weist einerseits einen ringförmigen Vorsprung (9) und anderseits eine ringförmige Nut (10) auf, die dazu bestimmt ist, einen Ring (11) aufzunehmen, der einen zweiten ringförmigen Vorsprung bildet, und die Spannvorrichtung zwischen diesen beiden Vorsprüngen (9, 11) angeordnet wird.
5. Öl-hydraulischer Druckspeicher nach Anspruch 3, dadurch gekennzeichnet, dass er aus zwei Schalen (1, 2) gebildet ist, von denen die eine (1) mit einem Vorsprung (15) und die andere (2) mit einem Aussengewinde (2a) versehen ist, das Einspannmittel (8), das unter Vorspannung gesetzt werden soll, einen Vorsprung (16), der sich auf dem Vorsprung (15) der ersten Schale (1) abstützt, und ein Gewinde (8a) aufweist, das mit dem Gewinde (2a) der anderen Schale (2) in Eingriff kommt, besagtes Einspannmittel in Form eines Gürtels (8) einerseits einen ringförmigen Vorsprung (9) und anderseits eine ringförmige Nut (10) aufweist, die dazu bestimmt ist, einen Ring (11) aufzunehmen, der einen zweiten ringförmigen Vorsprung bildet, und die Spannvorrichtung zwischen diesen beiden Vorsprüngen angeordnet wird.
6. Öl-hydraulischer Druckspeicher nach Anspruch 3, dadurch gekennzeichnet, dass er aus zwei Schalen (1, 2) gebildet ist, von denen jede mit einer im wesentlichen ringförmigen Wandung (18) versehen ist, wobei die Wandung (18) der einen Schale innerhalb der Wandung (17) der anderen Schale angeordnet ist, die innere Wandung einerseits an ihrer Basis ein Gewinde (18) aufweist, in welches das Gewinde (17a), das am äusseren Ende der äusseren Wandung (17) angeordnet ist, und anderseits an ihrem Ende eine Abflachung (20) aufweist, die sich gegen einen inneren Vorsprung (19) abstützt, der an der Basis der äusseren Wandung (17) vorgesehen ist; besagte äussere Wandung weist zwei ringförmige Stützelemente für eine Spannvorrichtung auf, die von einem ringförmigen Vorsprung (9) und einem in einer Nut (10) untergebrachten Ring gebildet ist.
7. Hydraulischer Druckspeicher nach Anspruch 4 oder Anspruch 5, dadurch gekennzeichnet, dass ein hohles zylindrisches Zwischenstück (21) zwischen den kreisförmigen Rändern der beiden Schalen (1, 2) derart angeordnet ist, dass, sobald die von der hydraulischen Flüssigkeit ausgeübte Trennkraft grösser ist als die von der Vorspannung ausgeübte Zuhaltekraft, der das Einspannmittel (8) unterworfen ist, die hydraulische Flüssigkeit in das Äussere des Druckspeichers austritt, der in diesem Falle die Rolle eines Überdruckventils spielt.
8. Vorrichtung zum Vorspannen der Einspannmittel (8, 17, 22) eines Druckspeichers gemäss einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass sie aus einem hydraulischen Zylinder (12, 13; 23, 28) besteht, dessen Kolben (13, 23) und dessen Körper (12, 28) ringförmige Mittel (13, 25; 12, 31) aufweisen, die die Einspannmittel (8, 12, 22) umschliessen und sich gegen die ringförmigen Vorsprünge (9, 11; 22a, 22b) abstützen.
EP81400246A 1980-02-27 1981-02-18 Verfahren zur Herstellung eines vorgespannten Druckspeichers und Druckspeicher gemäss diesem Verfahren Expired EP0035427B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8004313A FR2476768A1 (fr) 1980-02-27 1980-02-27 Accumulateur precontraint
FR8004313 1980-02-27
FR8009781A FR2481762A2 (fr) 1980-04-30 1980-04-30 Accumulateur precontraint
FR8009781 1980-04-30

Publications (3)

Publication Number Publication Date
EP0035427A2 EP0035427A2 (de) 1981-09-09
EP0035427A3 EP0035427A3 (en) 1981-10-07
EP0035427B1 true EP0035427B1 (de) 1984-10-24

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EP81400246A Expired EP0035427B1 (de) 1980-02-27 1981-02-18 Verfahren zur Herstellung eines vorgespannten Druckspeichers und Druckspeicher gemäss diesem Verfahren

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Country Link
US (1) US4492013A (de)
EP (1) EP0035427B1 (de)
AT (1) ATE10024T1 (de)
CA (1) CA1153281A (de)
DE (1) DE3166761D1 (de)
ES (1) ES8201694A1 (de)

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US5062455A (en) * 1989-08-25 1991-11-05 A. O. Smith Corporation Pressure vessel with diaphragm compression seal
US8454324B2 (en) * 2004-03-18 2013-06-04 Precision Dispensing Systems Limited Pump
FR2938308B1 (fr) * 2008-11-07 2012-04-20 Hydro Leduc Perfectionnements aux accumulateurs oleopneumatiques a piston
CN105397432B (zh) * 2015-12-24 2017-10-27 成都茵普精密机械有限公司 一种高精密配合大圆弧高效加工工艺
JP6942149B2 (ja) * 2017-02-03 2021-09-29 イーグル工業株式会社 アキュムレータ
JP6928006B2 (ja) 2017-02-03 2021-09-01 イーグル工業株式会社 アキュムレータ
EP3578828B1 (de) 2017-02-03 2022-09-28 Eagle Industry Co., Ltd. Akkumulator
JP6702905B2 (ja) 2017-03-13 2020-06-03 日本発條株式会社 アキュムレータ

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Also Published As

Publication number Publication date
ES499284A0 (es) 1982-01-01
EP0035427A3 (en) 1981-10-07
US4492013A (en) 1985-01-08
DE3166761D1 (en) 1984-11-29
CA1153281A (en) 1983-09-06
ATE10024T1 (de) 1984-11-15
EP0035427A2 (de) 1981-09-09
ES8201694A1 (es) 1982-01-01

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