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EP0019033A1 - Method of manufacturing a pressure container, in particular a pressure accumulator - Google Patents

Method of manufacturing a pressure container, in particular a pressure accumulator Download PDF

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Publication number
EP0019033A1
EP0019033A1 EP80100458A EP80100458A EP0019033A1 EP 0019033 A1 EP0019033 A1 EP 0019033A1 EP 80100458 A EP80100458 A EP 80100458A EP 80100458 A EP80100458 A EP 80100458A EP 0019033 A1 EP0019033 A1 EP 0019033A1
Authority
EP
European Patent Office
Prior art keywords
housing
wall
tapering
zone
crimping
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.)
Withdrawn
Application number
EP80100458A
Other languages
German (de)
French (fr)
Inventor
Gerhard Dipl.-Ing. Haug
Heinrich Kochendörfer
August Kraisel
Alfred Tietz
Herbert Trautewein
Robert Mergenthaler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0019033A1 publication Critical patent/EP0019033A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles

Definitions

  • the invention relates to a pressure vessel according to the preamble of the main claim.
  • the upper part to be crimped has the same wall thickness everywhere, which has the disadvantage that when crimping the wall thickness thickens in the upper part and is even so massive that the other housing parts, in particular in the lower region of the Housing thickening result, which are completely undesirable. This stems from the fact that the upper part has become more solid than the lower part.
  • the pressure vessel according to the invention with the characterizing features of the main claim has the advantage that the upper housing part receives the same wall thickness everywhere by crimping and that there is no effect on the wall thickness in other container regions. This gives a particularly stable housing that is also simple and therefore economical to manufacture.
  • Figure 1 shows a pressure accumulator in longitudinal section
  • Figure 2 shows the housing after a certain process step.
  • the pressure accumulator essentially consists of a closed housing 10, in the interior of which a membrane 11 made of elastic material is arranged, which divides it into a liquid space 12 and a gas space 13.
  • the membrane 11 is pressed with its edge 15 against a housing shoulder 16 by a metallic expansion ring 14 and is held there.
  • a nozzle 18 At the lower part of the housing there is a nozzle 18 with a continuous liquid hole 19. On the opposite part of the housing there is a gas inlet opening 20 which is closed by a screw 21. At the connector 18, the pressure accumulator is connected to a hydraulic system.
  • the housing 10 is made by extrusion from a metallic board.
  • a first operation under certain circumstances and depending on the size of the housing, two or more operations may be required for this - a hollow cylindrical structure is produced by extrusion with an approximately hemispherical lower housing part with a nozzle 18 formed thereon.
  • This pre-formed housing part is shown in FIG. 2.
  • the upper part 10 'of the housing is conical in such a way that the wall thickness tapers significantly upwards.
  • This taper can be produced by turning, by the extrusion process itself or by an ironing process. The taper is much greater than is necessary, for example, to pull out a press ram.
  • the shoulder 16 can also be produced by extrusion or again by turning.
  • the membrane 11 is inserted into the housing and fastened with the expansion ring 14. Then the upper part 10 'of the housing, ie the conical part, which extends over approximately half or a third of the housing interior, is crimped, so that a closed, approximately spherical housing results, as shown in FIG. 1. In this crimping process, the done by a special tool, the previously tapered wall thickness is now the same everywhere.
  • the lower part 10 "of the housing is shaped so that the wall thickness increases approximately evenly from the equator to the nozzle.
  • the taper in the region 10 'of the upper container part can of course also be on the outside, while the inner part is cylindrical, or on the outside and inside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The pressure container consists of a closed, approximately spherical casing in the interior of which a flexible partition wall (11) is arranged; the wall divides the interior into a liquid space (12) and a gas space (13). The casing is produced by extrusion from a blank in such a way that, in a first operation, an approximately goblet-shaped structure is produced, the upper part of which is conical in shape, i.e. has a tapering wall thickness, and is rolled in after the insertion of the partition wall, an approximately spherical casing thus being formed. The conical shape of the upper half (10') of the casing ensures that the rolling in does not give rise to any thickening in this zone but that the wall thickness remains the same at all points. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Druckbehälter nach der Gattung des Hauptanspruchs. Bei einem derartigen bekannten Behälter weist die obere, einzubördelnde Partie überall dieselbe Wandstärke auf, wodurch sich der Nachteil ergibt, daß sich beim Einbördeln die Wandstärke im oberen Teil verdickt und sogar derart massiv wird, daß sich an den anderen Gehäuseteilen, insbesondere im unteren Bereich des Gehäuses Materialverdickungen ergeben, die völlig unerwünscht sind. Dies rührt davon her, daß die obere Partie massiver geworden ist als das Unterteil.The invention relates to a pressure vessel according to the preamble of the main claim. In such a known container, the upper part to be crimped has the same wall thickness everywhere, which has the disadvantage that when crimping the wall thickness thickens in the upper part and is even so massive that the other housing parts, in particular in the lower region of the Housing thickening result, which are completely undesirable. This stems from the fact that the upper part has become more solid than the lower part.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Druckbehälter mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß der obere Gehäuseteil durch das Einbördeln überall die gleiche Wandstärke erhält und daß keine Auswirkungen auf die Wanddicken in anderen Behälterregionen erfolgen. Man erhält dadurch ein besonders stabiles Gehäuse, das auch einfach und damit wirtschaftlich herzustellen ist.The pressure vessel according to the invention with the characterizing features of the main claim has the advantage that the upper housing part receives the same wall thickness everywhere by crimping and that there is no effect on the wall thickness in other container regions. This gives a particularly stable housing that is also simple and therefore economical to manufacture.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Merkmale möglich.Advantageous further developments and improvements of the features specified in the main claim are possible through the measures listed in the subclaims.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen Druckspeicher im Längsschnitt, Figur 2 das Gehäuse nach einem bestimmten Verfahrensschritt.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. Figure 1 shows a pressure accumulator in longitudinal section, Figure 2 shows the housing after a certain process step.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Wie die Figur 1 zeigt, besteht der Druckspeicher im wesentlichen aus einem geschlossenen Gehäuse 10, in dessen Innenraum eine Membran 11 aus elastischem Werkstoff angeordnet ist, die diesen in einen Flüssigkeitsraum 12 und in einen Gasraum 13 unterteilt. Die Membrane 11 ist durch einen metallischen Spreizring 14 mit ihrem Rand 15 gegen eine Gehäuseschulter 16 gedrückt und wird dort festgehalten.As FIG. 1 shows, the pressure accumulator essentially consists of a closed housing 10, in the interior of which a membrane 11 made of elastic material is arranged, which divides it into a liquid space 12 and a gas space 13. The membrane 11 is pressed with its edge 15 against a housing shoulder 16 by a metallic expansion ring 14 and is held there.

Am unteren Teil des Gehäuses befindet sich ein Stutzen 18 mit einer durchgehenden Flüssigkeitsbohrung 19. Am gegenüberliegenden Teil des Gehäuses befindet sich eine Gaseinlaßöffnung 20, die durch eine Schraube 21 verschlossen ist. Am Stutzen 18 ist der Druckspeicher an eine Hydraulikanlage angeschlossen.At the lower part of the housing there is a nozzle 18 with a continuous liquid hole 19. On the opposite part of the housing there is a gas inlet opening 20 which is closed by a screw 21. At the connector 18, the pressure accumulator is connected to a hydraulic system.

Das Gehäuse 10 ist durch Fließpressen aus einer metallischen Platine hergestellt. In einem ersten Arbeitsgang - unter Umständen und je nach Größe des Gehäuses können auch zwei und mehr Arbeitsgänge hierfür erforderlich sein - wird durch Fließpressen ein hohlzylindrisches Gebilde hergestellt mit einem etwa halbkugelförmigen Gehäuseunterteil mit daran angeformtem Stutzen 18. Dieses vorgeformte Gehäuseteil ist in Figur 2 dargestellt. Wesentlich ist nun, daß der obere Teil 10' des Gehäuses konisch ausgebildet ist, und zwar derart, daß sich die Wandstärke nach oben hin deutlich verjüngt. Diese Konizität kann durch Drehen, durch den Fließpreßvorgang selbst oder durch einen Abstreckvorgang hergestellt sein. Die Konizität ist wesentlich größer, als sie etwa zum Herausziehen eines Preßstempels notwendig ist. Die Schulter 16 kann ebenfalls durch das Fließpressen hergestellt sein oder auch wieder durch Drehen. Nach diesen Arbeitsvorgängen wird die Membran 11 in das Gehäuse eingebracht und mit dem Spreizring 14 befestigt. Anschließend wird der obere Teil 10' des Gehäuses, d.h. der konische Teil, der sich über etwa die Hälfte oder ein Drittel des Gehäuseinnenraums erstreckt, eingebördelt, so daß sich ein geschlossenes, etwa kugelförmiges Gehäuse ergibt, wie es in Figur 1 dargestellt ist. Bei diesem Einbördelvorgang, der durch ein Spezialwerkzeug erfolgt, wird die zuvor verjüngte Wanddicke nun überall gleich dick. Der untere Teil 10" des Gehäuses ist so geformt, daß vom Äquator bis zum Stutzen hin die Wandstärke etwa gleichmäßig zunimmt.The housing 10 is made by extrusion from a metallic board. In a first operation - under certain circumstances and depending on the size of the housing, two or more operations may be required for this - a hollow cylindrical structure is produced by extrusion with an approximately hemispherical lower housing part with a nozzle 18 formed thereon. This pre-formed housing part is shown in FIG. 2. It is essential that the upper part 10 'of the housing is conical in such a way that the wall thickness tapers significantly upwards. This taper can be produced by turning, by the extrusion process itself or by an ironing process. The taper is much greater than is necessary, for example, to pull out a press ram. The shoulder 16 can also be produced by extrusion or again by turning. After these operations, the membrane 11 is inserted into the housing and fastened with the expansion ring 14. Then the upper part 10 'of the housing, ie the conical part, which extends over approximately half or a third of the housing interior, is crimped, so that a closed, approximately spherical housing results, as shown in FIG. 1. In this crimping process, the done by a special tool, the previously tapered wall thickness is now the same everywhere. The lower part 10 "of the housing is shaped so that the wall thickness increases approximately evenly from the equator to the nozzle.

Die Konizität im Bereich 10' des oberen Behälterteils kann natürlich auch außen liegen, während der innere Teil zylindrisch ist, oder auch außen und innen.The taper in the region 10 'of the upper container part can of course also be on the outside, while the inner part is cylindrical, or on the outside and inside.

Claims (10)

1. Verfahren zum Herstellen eines geschlossen Druckbehälters, insbesondere Druckspeichers, dessen einteiliges Gehäuse in mindestens einem ersten Arbeitsgang durch Fließpressen zu einem etwa kelchartigen Hohlkörper vorgeformt wird und anschließend durch Einbördeln des oben offenen Teils geschlossen wird, dadurch gekennzeichnet, daß die Wandung im oberen, vor dem Einbördeln offenen Gehäuseteil (10') derart konisch ausgebildet wird, daß sie sich zum offener. Ende hin verjüngt.1. A method for producing a closed pressure vessel, in particular pressure accumulator, the one-piece housing is preformed in at least a first operation by extrusion to an approximately cup-shaped hollow body and then closed by crimping the part open at the top, characterized in that the wall in the upper, before the crimping open housing part (10 ') is conical in such a way that it becomes open. Tapered towards the end. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß sich die Dicke der Wandung stetig verjüngt.2. The method according to claim 1, characterized in that the thickness of the wall tapers continuously. 3. Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß sich die verjüngte Zone vor dem Einbördeln über etwa ein Drittel oder die Hälfte der Innenraumhöhe des Gehäuses erstreckt.3. The method according to claim 1 and / or 2, characterized in that the tapered zone extends before crimping over about a third or half of the interior height of the housing. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verjüngung durch einen spanabhebenden Arbeitsvorgang erfolgt.4. The method according to any one of claims 1 to 3, characterized in that the tapering is carried out by a machining operation. 5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verjüngung zusammen mit dem ' Fließpreßvorgang erfolgt.5. The method according to any one of claims 1 to 3, characterized in that the tapering takes place together with the ' extrusion process. 6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Verjüngung von einer zylindrischen, gleich dicken Gehäusezone ausgeht, an der eine Schulter für die Anordnung einer den Innenraum des Gehäuses unterteilenden elastischen Membran gebildet ist.6. The method according to any one of claims 1 to 5, characterized in that the tapering starts from a cylindrical, equally thick housing zone, on which a shoulder is formed for the arrangement of an elastic membrane dividing the interior of the housing. 7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sich die Gehäusewandung an ihrem unteren Teil, an dem sich ein Stutzen (18) befindet, zunehmend verdickt.7. The method according to any one of claims 1 to 6, characterized in that the housing wall is increasingly thickened at its lower part, on which there is a nozzle (18). 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die sich verjüngende Zone durch Konizität an der Innenseite des Gehäuses gebildet ist.8. The method according to any one of claims 1 to 7, characterized in that the tapered zone is formed by taper on the inside of the housing. 9. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die sich verjüngende Zone durch Konizität an der Außenseite des Gehäuses gebildet ist.9. The method according to any one of claims 1 to 9, characterized in that the tapered zone is formed by conicity on the outside of the housing. 10. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die sich verjüngende Zone durch Konizität sowohl an der Innen- wie auch an der Außenseite des Gehäuses gebildet ist.10. The method according to any one of claims 1 to 7, characterized in that the tapered zone is formed by conicity both on the inside and on the outside of the housing.
EP80100458A 1979-05-10 1980-01-30 Method of manufacturing a pressure container, in particular a pressure accumulator Withdrawn EP0019033A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2918839 1979-05-10
DE2918839 1979-05-10

Publications (1)

Publication Number Publication Date
EP0019033A1 true EP0019033A1 (en) 1980-11-26

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Family Applications (1)

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EP80100458A Withdrawn EP0019033A1 (en) 1979-05-10 1980-01-30 Method of manufacturing a pressure container, in particular a pressure accumulator

Country Status (3)

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EP (1) EP0019033A1 (en)
JP (1) JPS55149734A (en)
BR (1) BR8002852A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998055258A1 (en) * 1997-06-06 1998-12-10 Hydac Technology Gmbh Method for producing a membrane reservoir
CN105855795A (en) * 2015-01-21 2016-08-17 辽宁美托科技有限公司 Spherical pressure vessel integrally forming technology
CN106583589A (en) * 2017-02-10 2017-04-26 江苏浩峰汽车附件有限公司 Liquid storage tank machining process

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB453655A (en) * 1935-03-15 1936-09-15 Joseph Hicks Langford Trevorro Improvements relating to containers for gases under pressure
DE650936C (en) * 1936-07-03 1938-12-10 Hans Amfaldern Process for the production of light metal bottles with reinforced necks
US2227817A (en) * 1938-06-03 1941-01-07 C O Two Fire Equipment Co Method of forming a container for high pressure fluid
US2751677A (en) * 1952-07-09 1956-06-26 Specialties Dev Corp Method of making metallic containers for confining fluid medium under pressure
DE1114156B (en) * 1959-03-25 1961-09-28 Reisholz Stahl & Roehrenwerk Method and device for the production of spherical, seamless pressure vessels
US3471920A (en) * 1967-08-28 1969-10-14 United Aircraft Corp Pressure vessel construction
DE1602541A1 (en) * 1966-01-13 1970-10-29 Citroen Sa Process for the manufacture of pressure vessels
DE1552025A1 (en) * 1966-11-04 1970-11-26 Langen & Co Process for the production of a hydropneumatic pressure accumulator
FR2145520A1 (en) * 1971-07-09 1973-02-23 Dalmine Spa
FR2147869A1 (en) * 1971-08-04 1973-03-11 Hutogepgyar Strong, seamless a1-alloy flasks - for the conveyance of pressurised gases
FR2238544A1 (en) * 1973-07-24 1975-02-21 Maschf Augsburg Nuernberg Ag

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB453655A (en) * 1935-03-15 1936-09-15 Joseph Hicks Langford Trevorro Improvements relating to containers for gases under pressure
DE650936C (en) * 1936-07-03 1938-12-10 Hans Amfaldern Process for the production of light metal bottles with reinforced necks
US2227817A (en) * 1938-06-03 1941-01-07 C O Two Fire Equipment Co Method of forming a container for high pressure fluid
US2751677A (en) * 1952-07-09 1956-06-26 Specialties Dev Corp Method of making metallic containers for confining fluid medium under pressure
DE1114156B (en) * 1959-03-25 1961-09-28 Reisholz Stahl & Roehrenwerk Method and device for the production of spherical, seamless pressure vessels
DE1602541A1 (en) * 1966-01-13 1970-10-29 Citroen Sa Process for the manufacture of pressure vessels
DE1552025A1 (en) * 1966-11-04 1970-11-26 Langen & Co Process for the production of a hydropneumatic pressure accumulator
US3471920A (en) * 1967-08-28 1969-10-14 United Aircraft Corp Pressure vessel construction
FR2145520A1 (en) * 1971-07-09 1973-02-23 Dalmine Spa
FR2147869A1 (en) * 1971-08-04 1973-03-11 Hutogepgyar Strong, seamless a1-alloy flasks - for the conveyance of pressurised gases
FR2238544A1 (en) * 1973-07-24 1975-02-21 Maschf Augsburg Nuernberg Ag

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998055258A1 (en) * 1997-06-06 1998-12-10 Hydac Technology Gmbh Method for producing a membrane reservoir
CN105855795A (en) * 2015-01-21 2016-08-17 辽宁美托科技有限公司 Spherical pressure vessel integrally forming technology
CN106583589A (en) * 2017-02-10 2017-04-26 江苏浩峰汽车附件有限公司 Liquid storage tank machining process
CN106583589B (en) * 2017-02-10 2019-05-07 江苏浩峰汽车附件有限公司 A kind of fluid reservoir body processing technology

Also Published As

Publication number Publication date
JPS55149734A (en) 1980-11-21
BR8002852A (en) 1980-12-23

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Inventor name: MERGENTHALER, ROBERT

Inventor name: KRAISEL, AUGUST

Inventor name: TRAUTEWEIN, HERBERT

Inventor name: KOCHENDOERFER, HEINRICH

Inventor name: HAUG, GERHARD, DIPL.-ING.

Inventor name: TIETZ, ALFRED