EP2373920B1 - Réservoir à air comprimé pour véhicules utilitaires et procédé de fabrication de celui-ci - Google Patents

Réservoir à air comprimé pour véhicules utilitaires et procédé de fabrication de celui-ci Download PDF

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Publication number
EP2373920B1
EP2373920B1 EP09799332A EP09799332A EP2373920B1 EP 2373920 B1 EP2373920 B1 EP 2373920B1 EP 09799332 A EP09799332 A EP 09799332A EP 09799332 A EP09799332 A EP 09799332A EP 2373920 B1 EP2373920 B1 EP 2373920B1
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EP
European Patent Office
Prior art keywords
air tank
sleeve
compressed
compressed air
bore
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Active
Application number
EP09799332A
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German (de)
English (en)
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EP2373920A1 (fr
Inventor
Wolfgang Petzendorfer
Alexander KÖGEL
Steffen Zanek
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Erhard GmbH
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Erhard GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0607—Coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • F17C2203/0643—Stainless steels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0305—Bosses, e.g. boss collars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/234—Manufacturing of particular parts or at special locations of closing end pieces, e.g. caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/031—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/05—Improving chemical properties
    • F17C2260/053—Reducing corrosion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0181—Airbags
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0772—Inflation devices, e.g. for rescue vests or tyres
    • 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
    • Y10T29/49616—Structural member making
    • Y10T29/49622—Vehicular structural member 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
    • Y10T29/49893—Peripheral joining of opposed mirror image parts to form a hollow body

Definitions

  • the invention relates to a compressed air tank for commercial vehicles according to the preamble of claim 1.
  • the invention further relates to a method for producing compressed air tanks according to the preamble of claim 10 and to an apparatus for carrying out the method.
  • Compressed air containers for commercial vehicles are known from the general state of the art and are used for various functionalities, in particular for compressed air supply of air suspensions of commercial vehicles.
  • Compressed air tanks can be used in commercial vehicles to supply a variety of consumers. In addition to compressed-air brake systems and air suspensions, these may also be rescue systems (for example airbags) or systems that change the tire pressure of commercial vehicles.
  • rescue systems for example airbags
  • pressure vessels are not only used in commercial vehicles and passenger cars, but also in other vehicles, e.g. used in rail vehicles.
  • a pressure vessel for supplying vehicles, in particular commercial vehicles, with a pressurized gaseous medium is, for example, from the closest prior art DE 20 2005 018 579 U1 known.
  • Conventional pressure vessels have a tubular or cylindrical peripheral wall (shell), the open end faces with corresponding covers (outer bottoms) closed, in Normally welded, be. This creates a cavity for storing the intended gas.
  • the cavity can be loaded and / or unloaded via connections (holes) in the jacket or the exterior floors.
  • the DE 20 2005 018 579 U1 describes an advantageous embodiment of a compressed air tank such that at least one outer bottom is formed integrally with the jacket.
  • both outer floors may be formed integrally with each part of the peripheral wall.
  • compressed air cylinders In general, compressed air cylinders must withstand mechanical stresses due to internal or external pressure as well as other mechanical, physical (temperature) and chemical loads.
  • a common material for the production of appropriate pressure vessels is steel.
  • Steel containers basically have the advantage of a high mechanical strength and thus a high pressure resistance and also a good temperature resistance. In contrast, the chemical resistance of steel to corrosive substances is rather poor.
  • Steel containers are also relatively susceptible to external weather influences, so that as a rule an additional external and possibly inner coating or coating is provided.
  • the inner coating of a compressed air tank is achieved in the prior art by a so-called. Wet coating, which, however, does not lead to satisfactory results and in particular can not be applied inexpensively.
  • a disadvantage of the MAG welding method for connecting the outside ground to the shell is that the MAG welding process is relatively slow.
  • FIG. 1 of the DE 200 23 422 U1 shows a compressed air tank made of plastic.
  • FIG. 1 of the DE 200 23 422 U1 shows a compressed air tank made of plastic.
  • a pressure vessel made of metal provision is generally made for welding sleeves onto the bores in the outer bottom or the jacket. The welding of the sleeves is in turn carried out via a MAG welding process.
  • the disadvantage here is that the welding of the sleeve causes a lot of effort, especially because the MAG welding process is relatively slow and also welding material is necessary.
  • the present invention has for its object to solve the disadvantages of the prior art, in particular to provide a compressed air tank for commercial vehicles, which is inexpensive and easy to manufacture.
  • the present invention is also based on the object to provide an advantageous method for producing a compressed air tank and to provide an apparatus for performing the method.
  • the inventive solution results in the inside of the container, a surface which is optimally suitable for painting and coating, since projections and recesses (Sehmutzkanten or chemical edges) are avoided. This results in a high quality for the paint or the coating. In addition, will avoided that residues accumulate on the inner edges, which migrate through the lines during operation and possibly cause problems in brake lines or the like.
  • the outer floors can be quickly and reliably connected to the shell by an orbital circumferential weld produced by laser welding.
  • the respective contact surfaces are processed in such a way that the contact surfaces to be connected can be set against one another in a flat or blunt or in a custom-made manner.
  • the resulting between the contact surfaces gap should be as low as possible, i. the contact surfaces are machined so precisely that the resulting gap is small, i. suitable for laser welding is.
  • the mutually aligned contact surfaces have a skew of up to 45 °, preferably 15 ° +/- 5 °.
  • the aligned contact surfaces may preferably have an identical skew.
  • the skewing results in the self-centering of the two components when attaching the outer bottom to the front side of the shell.
  • the bevel can be designed so that a kind of dovetail connection results between the two components to be connected.
  • the skewing can be designed both from the inside to the outside sloping and rising, in both cases results a self-centering of the components also a light gap is avoided.
  • the contact surfaces have no skew. Ie. the contact surfaces extend or lie in a radial plane of the compressed air tank or extend in a plane which is perpendicular to the axis of the pressure vessel.
  • the laser is also used in addition to the welding of the outer floors with the end faces of the shell to provide the jacket (after bending) with a longitudinal weld.
  • All welded joints for the manufacture of the compressed air tank i. e.g. the longitudinal weld and the two orbital welds can be created by means of the laser without welding material.
  • An advantage is that no oxide layer is formed in this case, because the component is only lukewarm.
  • the sleeve is welded by laser welding or CD welding to the bore.
  • Another advantage of laser welding is that the regularly negative welding seam bulge resulting from MAG welding is avoided. In addition, a cleaning of the weld during laser welding is not required, so that this can be omitted in a MAG weld frequently necessary operation.
  • Compressed air tanks generally have a plurality of holes provided with sockets, which are arranged in one or both outer floors and / or on the jacket. It is advantageous if the inner diameter of the bore is slightly larger than the inner diameter of the sleeve.
  • the sleeve may be formed in a known manner, preferably with an internal thread.
  • the sleeve is preferably made of steel or stainless steel.
  • the holes or the holes in the outer bottom can be made, for example, by punch or by punching.
  • the sleeve has a recess, a bevel, a (preferably wedge-shaped) groove or the like, which is arranged such that between this and the compressed air tank remain a ridge formed by the sleeve, an annular projection or the like , It can be provided that the laser beam of a laser applied from the outside penetrates into the groove, the chamfer or the groove such that the burr or the annular projection of the sleeve is welded to the adjacent material of the compressed air tank, thus the sleeve can be particularly process reliable , fast and extremely strong welding with the compressed air tank.
  • the welding of the sleeve by an externally attached laser is suitable both for welding the sleeve to the outer floors and to the jacket.
  • the laser in particular in order to weld sleeves onto boreholes of the outer bottom, is applied from the inside.
  • the laser can weld as far as possible radially outward annular surface of the sleeve with the compressed air tank. This in turn avoids a radially circumferential gap between the sleeve and the compressed air tank.
  • the Verschmelzkante should preferably be radially as far outside as possible.
  • An advantage of welding the sleeve in that the laser is applied to the inside of an outer bottom, is that the sleeve merges particularly advantageous with the material of the compressed air tank.
  • the welding process as the inventor has found out, can be controlled in a particularly process-reliable manner.
  • the method is particularly suitable for attaching sleeves on the outer floor, since in this case the laser can be particularly easily applied to the inside of the outer floor.
  • the sleeves can preferably be welded to the outer bottom before the outer bottom is welded to the jacket, since the jacket can not be welded with the laser.
  • CD Welding means Capacitor Discharge or Capacitor Discharge Welding.
  • CD welding is a special form of projection welding and, as the inventors have found, has particular advantages in connecting sleeves to compressed air tanks.
  • a corresponding grounding of the compressed air tank can take place after the attachment of the sleeve by a corresponding surge within a few milliseconds a permanent and reliable welding of the sleeve at the intended location of the compressed air tank.
  • the sleeve can, for example, be attached to the intended location of the compressed air tank via a copper stamp.
  • By a suitable surge then the welding of the sleeve takes place on the compressed air tank.
  • a particular advantage is that several sleeves can be welded simultaneously in one operation by the use of a corresponding number of copper stamps.
  • the sleeve has at its adjacent to the compressed air tank bottom at least one melting edge, which is connected by the CD welding with the compressed air tank.
  • the connection of the sleeve with the compressed air tank is thus not by a flat welding, but only by welding the (preferably annular) circumferential melt edge with the adjacent material of the compressed air tank.
  • the inventor has recognized that a surface welding of the sleeve with respect to the formation of a melting edge on the underside of the sleeve is disadvantageous. It is advantageous if the molten edge extends radially (as far as possible) on the outside of the underside of the sleeve ring.
  • a radially circumferential gap between the top of the compressed air tank and the underside of the sleeve is avoided.
  • a plurality of circumferential melting edges or more melting points or melting lines may be present.
  • the welding of the sleeve on the compressed air tank is further improved, however, the melt edges increase the manufacturing cost of the sleeve.
  • a melting edge may be formed radially on the outside circumferentially on the underside of the sleeve and the other radially inside. This avoids that dirt or impurities can penetrate below the sleeve.
  • a device for carrying out the CD welding process, which has punches which pry the sleeve against the compressed-air container in order to ensure that the sleeve is pressed against the compressed-air container when it is energized.
  • the springs press the sleeve with a slight bias.
  • the sleeve has a shape which makes it possible to insert the sleeve at least with a portion in the bore is particularly advantageous.
  • the sleeve can be inserted so far into the bore in the shell or in one of the outer floors of the compressed air tank, that the underside of the sleeve is substantially in a plane with the adjacent inner side of the compressed air tank. This prevents dirt and chemical edges.
  • the insertion of the sleeve into the bore can for example be made possible by the fact that the sleeve has an outer diameter which is slightly smaller than the inner diameter of the bore.
  • a press fit may be provided.
  • the sleeve has a Versprung, a nose, a taper or a step which is inserted into the bore.
  • the sleeve can have an overall outer diameter which is greater than the inner diameter of the bore, so that the sleeve can be placed on the outside of the hole and protrudes only the taper or, the projection of the sleeve into the bore.
  • the sleeve can thus lie substantially flat on the outside of the compressed air tank and welded from the outside to the container.
  • the sleeve is welded by means of laser or CD welding, it has proven to be advantageous if the region surrounding the bore of the shell and / or the outer floors is flat or flattened.
  • the coat, but also the outer floors usually have a curvature. So far, this has been tolerated and compensated accordingly by the application of welding wire.
  • the inventor has recognized, however, that the welding of the sleeve can be significantly improved if the area to which the sleeve is to be welded has no curvature.
  • a flattening can be produced particularly advantageously by a stamping tool.
  • the inner coating of the container is made by a powder coating.
  • the coating was applied by a wet coating method (wet painting). This appeared necessary because of the projections and edges on the inside of the container, it was believed that only by a wet coating process could a complete interior coating be ensured. Now that according to the invention dirt edges and the like are avoided on the inside of the container, the advantages of a powder coating process can be used.
  • an electrostatic powder coating process is understood to mean both corona charging and tribocharging.
  • Corona charging is a high voltage process.
  • Tribo charging the powder particles are driven along the surface at high speed, charging them.
  • a tribo lance can be used to insert the powder into the compressed air tank.
  • a nozzle or a spray head at the top of the Tribo lance the powder charged by the friction can be injected into the interior of the pressure vessel. Due to the charge, the powder settles on the inside of the compressed air tank.
  • the process of electrostatic charging and the contact on the inner wall is basically known.
  • the inventor has recognized that in the compressed air tank results in an optimal, reliable and uniform powder distribution in the interior of the compressed air tank. This particular, since the geometry was created in the interior of the compressed air tank according to the invention so that no projections and recesses are more present.
  • the tribo-lance is initially retracted into the compressed-air tank so far that the end of the compressed-air tank remote from the access opening can be provided with a powder layer. During the spraying of the powder, the tribo-lance can then be withdrawn, so that a uniform distribution of the powder is ensured.
  • the inner coating can then be dried at a temperature of 150 ° to 250 °, preferably 200 ° (+/- 10 °).
  • a cylindrical or tubular jacket is bent from a blank. Furthermore, it is provided that two outer floors are produced by drawing or embossing and welded to the end faces of the jacket. At least one outer bottom and / or the jacket are preferably provided prior to welding together with a bore, on which a sleeve is welded. The sleeve can also already be welded on before the jacket is assembled with the outer floors, but also afterwards. It is provided that at least the inside of the compressed air tank is provided with an inner coating. According to the invention, it is provided that the inner coating is produced by a powder coating becomes.
  • the invention provides that the contact surfaces between the shell and the outer floors are designed such that the contact surfaces are flat or blunt abutting each other, after which the contact surfaces are connected without welding material by laser welding. According to the invention it is further provided that the sleeve is applied to the holes by laser welding or by CD welding.
  • a particularly preferred apparatus for carrying out the method with regard to the production of a powder coating on the inside of the compressed air tank results from claim 13.
  • the device should have a lance, preferably a tribo-lance with a spray head for introduction into the compressed air tank.
  • the device should have a pin with an internal bore for insertion into a bore in the outer bottom for producing an access opening for the lance.
  • a support is to be provided to receive the compressed air tank so that the access opening is oriented downwards.
  • a device should be provided to introduce the lance through the access opening and withdraw it again with the release of coating powder.
  • the introduced into the bolt part of the lance and the spray head has a diameter of at most 20 mm, preferably of at most 15 mm,
  • the lance can be particularly easy with the spray head through the inner bore of the bolt in the Insert compressed air tank.
  • the device has a device for pretreatment of the inside of the compressed air tank.
  • the pretreatment may be to clean the inside of the compressed air tank, for example, degrease, wash and get rid of chemicals. The subsequent coating process is thereby improved.
  • the tribo-lance can be formed, for example, from a plastic, preferably from polyamide or polyethylene.
  • the carrier is designed such that a plurality of compressed air tanks can be attached, for example. Twelve compressed air tanks. It may be advantageous if a corresponding number of tribo lances and bolts is provided.
  • the compressed air tank is first fixed on the carrier. Subsequently, the bolt, which is provided with an internal bore, can be introduced into the access opening.
  • the bolt can preferably have an insertion aid, for example a funnel, through which the lance can be inserted.
  • the apparatus may include means for drying the applied powder.
  • the device is preferably designed such that the drying at a temperature of 150 ° to 250 ° C, preferably 200 ° C (+/- 10 ° C) takes place. This process is basically known from the prior art.
  • the tribo-lance can also be made of Teflon or have Teflon.
  • the spray head is preferably designed to be movable in all directions, i. spraying both radially and forwards and backwards.
  • the claims 1 and 10 claim a particularly advantageous embodiment of the invention or a particularly advantageous method to produce a compressed air tank.
  • the combination of the features 1.1 to 1.3 or the process steps 10.1 to 10.3 lead to a particularly advantageous compressed air tank, the benefits complement each other so that reinforce each other's effects.
  • the features 1.1., 1.2 and 1.3 of claim 1 and the method steps 10.1, 10.2 and 10.3 of claim 10 each taken alone represent an invention. That is, the features 1.1, 1.2 and 1.3 or, the feature.e 10.1, 10.2 and 10.3 need not be combined with each other to represent a solution according to the invention.
  • the feature 1.1, the feature 1.2 and the feature 1.3 in each case in combination with the preamble in itself constitutes an independent inventive solution to which any claims are still directed.
  • the features can of course be advantageously combined with each other in two groups.
  • the present patent application also includes two independent inventive embodiments of the sleeve.
  • Applicant reserves the right in this respect to make a claim to a sleeve having on its underside at least one circumferential melting edge, as claimed in claim 5.
  • the applicant reserves independently of applying for a sleeve, which is designed according to claim 3.
  • the compressed air tank according to the invention is suitable for any gases.
  • the compressed air tank may optionally have an integrally formed with the jacket outer bottom, as shown in the FIG. 6 of the DE 20 2005 018 579 U1 is shown.
  • Compressed air tanks for commercial vehicles are well known from the general state of the art, which is why their basic functioning and their integration into a commercial vehicle will not be discussed in detail below. Only, for example, is on the DE 20 2,005 018 579 U1 and the DE 200 23 422 U1 directed.
  • the Figures 1 and 2 show a compressed air tank 1 for commercial vehicles which is formed from a tubular or cylindrical shell 2 and two outer floors 3.
  • the jacket 2 can be made for example from a correspondingly large board by bending.
  • the outer floors can be prepared in a basically known manner by drawing or by embossing.
  • jacket 2 and the outer floors 3 As a material for the jacket 2 and the outer floors 3, various materials are suitable, in the embodiment it is provided that the jacket 2 and the outer floors 3 are made of metal, preferably steel or stainless steel or alloys thereof. Basically, compressed air tank 1 may also be formed of aluminum or aluminum alloys.
  • the compressed air tank 1 has a length between 200 mm and 1400 mm. It has proven to be advantageous to form the shortest container with a length of 200 to 300 mm and the longest container with a length of 1300 to 1400 mm.
  • the compressed air tank 1 in both the shell 2 and in one of the outer floors 3 holes 4, which can serve to connect different lines, eg. To the consumer or for draining condensation.
  • the holes 4 are each provided with a sleeve 5, which may be provided in the execution area with an internal thread to allow easy connection of continuing lines.
  • the inside 1a of the compressed air tank 1 is provided with an inner coating 6, whose application in the FIGS. 10 and 11 is shown in more detail.
  • the shell 2 contact surfaces 2a and the outer floors 3 contact surfaces 3a which are designed such that the contact surfaces 2a, 3a abutment (or butt, or area) adjacent.
  • the jacket 2 and the outer floors 3 can be welded to each other at the contact surfaces 2a, 3a without welding material by laser welding.
  • a laser 7 used for this purpose is in FIG. 4 shown in principle. In the exemplary embodiment, it is provided that the laser 7 has two laser heads which simultaneously weld the contact surfaces 2a, 3a between an outer bottom 3 and the shell 2. Alternatively, of course, two or more lasers can be used.
  • the jacket 2 has a material thickness of 2.2 mm +/- 0.5 mm.
  • FIG. 4a shows contact surfaces 2a, 3a which are inclined relative to a radially extending plane of the compressed air tank 1 or have an angle to the radial. Characterized a skew 8 is formed, which may be up to 45 °, preferably 15 °. This results in a self-centering of the outer bottom 3 to the shell. 2
  • the edges of the shell 2 and the outer floors 3 to be embossed are provided in the embodiment, the edges of the shell 2 and the outer floors 3 to be embossed.
  • Fig. 4b shows one too Fig. 4a Alternative embodiment of the contact surfaces 2a, 3a, which are not inclined relative to a radially extending plane of the compressed air tank 1 or extend in the plane.
  • the contact surfaces 2a 3a thus encounter straight or flat, ie without inclination against each other. This version is opposite to the one in Fig. 4a preferred embodiment shown.
  • the sleeve 5 is attached to the outside and welded to the adjacent material of the compressed air tank 1.
  • the inner diameter of the bore is larger than the inner diameter of the sleeve. 5
  • the welding of the sleeves 5 to the compressed air tank 1 is carried out in the embodiment by laser welding or CD welding.
  • the sleeve 5 is formed in the embodiment of metal, preferably made of steel or stainless steel.
  • the sleeve 5 has a substantially uniform outer circumference.
  • the frontal edges are slightly bevelled.
  • the laser 7 from the outside, that is attached to the outside of the outer bottom or the shell 2.
  • the laser 7 is to weld the sleeve 5 as far as possible radially outward and annularly circumferentially with the adjacent material of the compressed air tank 1.
  • An advantageous positioning of a weld seam 10 produced by the laser 7 is shown in FIG FIG. 5 shown in principle.
  • FIG. 6 shows a particularly suitable design of the sleeve 5 to that according to FIG. 5 perform described laser welding process.
  • the sleeve 5 in this case has a recess 11 and a groove which is arranged in the peripheral wall of the sleeve 5, that between the groove 11 and the groove and the outside of the compressed air tank 1 formed by the sleeve 5 burr 12 or a annular projection remains.
  • the laser beam from the externally applied laser 7 preferably engages in the groove 11 or the groove in order to fuse or weld the ridge 12 or the annular projection of the sleeve 5 to the adjacent material of the compressed-air container 1.
  • a preferably provided positioning of the weld 10 formed thereby is in FIG. 6 shown in dashed lines.
  • FIGS. 7a to 7c show three particularly suitable designs of sleeves.
  • the FIGS. 7a to 7c also show a particularly suitable solution to weld the sleeve 5 with the compressed air tank 1.
  • the sleeve 5 is provided so that it has an outer diameter which is smaller than the inner diameter of the bore 4.
  • the sleeve 5 is inserted or inserted at least with a portion of its axial length in the bore 4 and there be welded.
  • the Fig. 7a shows an embodiment in which the sleeve 5 has a substantially constant over its axial length outer diameter having.
  • the sleeve 5 is inserted with an end face into the bore 4 and welded there preferably, the sleeve 5 can be inserted so far into the bore 4, that introduced into the bore 4 underside of the sleeve 5 is substantially flush with the inside of the outer bottom 3 or coat 2 is.
  • Fig. 7a The welding of the sleeve 5 according to Fig. 7a can be done by an externally and / or internally attached laser 7.
  • Fig. 7a an externally mounted weld 10 is shown.
  • sleeve 5 is particularly inexpensive, preferably as a turned part, can be produced.
  • the sleeve 5 has on its bore 4 facing the underside a taper 13 and / or an axial protruding projection and / or a nose.
  • the taper 13 and / or the projection and / or the nose have at least at their end facing away from the sleeve 5 an outer diameter which is smaller than the inner diameter of the bore 4.
  • the sleeve 5 can thus with their taper 13 and the Projection or the nose are inserted into the bore 4, as in the FIGS. 7b and 7c is shown.
  • Fig. 7b and Fig. 7c illustrated embodiment can be provided that the taper 13 and the projection or the nose with the sleeve 5 are integral.
  • Fig. 7b and Fig. 7c shows the course of the outer diameter of the taper 13 and the projection or the nose is preferably adapted to the course of the inner edge of the bore 4.
  • the taper 13 is particularly easy in the Insert hole 4. It also ensures that there is no light gap during laser welding.
  • the weld 10 can be mounted in both embodiments from the inside and / or from the outside. In the FIGS. 7b and 7c a weld 10 is attached from the outside by means of laser welding. This embodiment is preferable.
  • the sleeve in this embodiment a taper 13 and a projection or a nose with an oblique course.
  • the taper 13 or the projection or the nose have a beveled outer edge, so that the outer diameter of the taper 13 or, the projection or the nose tapers towards its free end.
  • the angle ⁇ of the chamfer can be, for example, 30 ° to 70 °, preferably 60 °.
  • the chamfer results in a self-centering.
  • Fig. 7c shows a particularly preferable embodiment of the sleeve 5. It is provided that the taper 13, the projection or the nose is formed as a stage with a substantially constant outer diameter.
  • the sleeve 5 can be made as a turned part. It is therefore not necessary to produce the bore 4 in the outer bottom 3 or in the jacket 2 with a chamfer. Alternatively, however, a chamfer may additionally be provided in the outer bottom.
  • the bore 4 can be produced in a particularly simple and cost-effective manner by punching.
  • the underside of the taper 13 extends substantially in a plane with the inside of the outer bottom 3 or of the jacket 2 in the region of the bore 4.
  • FIGS. 7a to 7c illustrated embodiments over the embodiments according to the FIGS. 5 and 6 is that no dirt edge formed within the compressed air tank 1, as are avoided by the design and arrangement of the sleeve 5 recesses on the inside of the compressed air tank 1.
  • FIGS. 7a to 7c illustrated embodiments with the other features that have been presented with respect to the other embodiments or generally with respect to the invention.
  • FIG. 8 shows in principle an alternative welding of the sleeve 5 with the compressed air tank 1.
  • the laser 7 is attached to the inside of an outer bottom 3.
  • the patch on the outside of the compressed air tank 1 sleeve 5 is thus welded to the bore 4 characterized in that the laser 7 acts on the inside of the outer bottom 3.
  • the laser 7 is set so that it welds a radially outer annular surface of the sleeve 5 with the adjacent material of the compressed air tank 1.
  • the radially outer annular surface is in FIG. 8 shown in dashed lines. Since the inner diameter of the sleeve 5 is less than the inner diameter of the bore 4, the inner edge of the sleeve 5 overlaps the inner edge of the bore 4.
  • the laser not only an annular surface of the sleeve 5 welded to the adjacent material of the compressed air tank but two or more.
  • FIG. 9 shows another way to weld the sleeve 5 on the bore 4 and on the compressed air tank 1.
  • a CD welding process is used.
  • the sleeve 5 is attached to the intended location of the compressed air tank 1 and welded by a short surge or the application of the CD welding process with the adjacent material of the compressed air tank 1.
  • FIG. 9 results in the sleeve 5 on its underside 5 a on a circumferential edge of fusion 14.
  • the melting edge 14 has an annular course.
  • the melt edge 14 is connected or fused by the CD welding process with the compressed air tank.
  • the melt edge 14 has a wedge-shaped course, ie tapers from the bottom 5a of the sleeve 5 in the direction of the compressed air tank 1.
  • two or more melt edges 14 may be formed on the bottom 5a of the sleeve 5. It is advantageous if the melt edges 14 radially outwardly annular on the bottom 5a of the sleeve 5 rotates.
  • the compressed air tank 1 shown in the embodiment has an inner coating 6 on the inside 1a of the compressed air tank, which is manufactured by a powder coating method.
  • the powder coating is electrostatically applied to the inside 1a of the compressed air tank and this is a Tribo charge is used.
  • FIG. 10 results in the embodiment provided that the powder coating is introduced by a tribo-lance 15 in the compressed air tank 1.
  • the tribo-lance 15 in this case has a spray head 16, which emits both radially and forward and backward powder. This is in FIG. 10 shown accordingly.
  • FIG. 11 A particularly suitable device for carrying out the powder coating is in FIG. 11 shown.
  • a carrier 17 is provided to receive a plurality of compressed air tank 1.
  • a tribo-lance 15 is provided with a spray head 16.
  • a bolt 18 is provided with an inner bore.
  • the bolt 18 is introduced into a bore 4 in the outer bottom 3 so as to provide an access opening for the lance 15.
  • the part of the tribo lance 15 to be inserted into the bolt 18 and the spray head 16 should preferably have at most an outside diameter of 20 mm, particularly preferably at most 15 mm.
  • the apparatus shown comprises means 19 for introducing the tribo-lances 15 through the access opening and retracting them with the release of coating powder.
  • FIG. 11 The apparatus shown comprises means 19 for introducing the tribo-lances 15 through the access opening and retracting them with the release of coating powder.
  • a device 20 for pretreating the inside 1a of the compressed air tank 1 is provided. Furthermore, a device 21 for drying the applied powder at a temperature of 150 ° C to 250 ° C, preferably 200 ° C is provided.
  • the carrier 17 may be movable by a corresponding suspension. The carrier 17 fixes the compressed air tank 1 both above and below. It is provided that several compressed air tanks 1 are treated simultaneously.
  • the outside of the compressed air tank 1 is provided with a powder coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Laser Beam Processing (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Claims (15)

  1. Réservoir à air comprimé (1) pour véhicules utilitaires, avec une enveloppe tubulaire ou cylindrique (2), qui est fermée à ses deux extrémités par des fonds extérieurs soudés (3), dans lequel au moins un fond extérieur (3) et/ou l'enveloppe (2) est doté(e) d'un perçage (4), dans lequel un manchon (5) est soudé sur le perçage (4) et dans lequel au moins la face intérieure (1a) du réservoir à air comprimé (1) est munie d'un revêtement intérieur (6),
    caractérisé en ce que
    1.1. des faces de contact (2a, 3a) entre l'enveloppe (2) et les fonds extérieurs (3) sont configurées de telle manière que les faces de contact (2a, 3a) soient soudées par aboutage ou bout à bout et que les faces de contact (2a, 3a) soient soudées l'une à l'autre par soudage au laser sans matériau d'apport;
    1.2. le manchon (5) est soudé sur le perçage (4) par soudage au laser ou soudage CD; et
    1.3. le revêtement intérieur (6) du réservoir à air comprimé (1) est réalisé par un revêtement de poudre déposé par voie électrostatique sur la face intérieure (1a) du réservoir à air comprimé (1).
  2. Réservoir à air comprimé selon la revendication 1, caractérisé en ce que le laser (7) comporte deux têtes laser, qui soudent simultanément l'une à l'autre les faces de contact (2a, 3a) entre un fond extérieur (3) et l'enveloppe (2).
  3. Réservoir à air comprimé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le manchon (5) présente une entaille (11), un chanfrein ou une rainure, qui sont disposés de telle manière qu'il subsiste entre eux et le réservoir à air comprimé (1) une bavure (12) formée par le manchon (5) ou une saillie annulaire.
  4. Réservoir à air comprimé selon la revendication 3, caractérisé en ce qu'un rayon laser d'un laser (7) fixé de l'extérieur pénètre dans l'entaille (11), le chanfrein ou la rainure (13), de telle manière que la bavure (12) ou la saillie annulaire du manchon (5) fusionne avec le matériau voisin du réservoir à air comprimé (1).
  5. Réservoir à air comprimé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le manchon (5) présente, sur sa face inférieure (5a) proche du réservoir à air comprimé (1), au moins une arête de fusion (14) au moins approximativement périphérique annulaire, qui est assemblée ou fusionnée avec le réservoir à air comprimé (1) par soudage CD, dans lequel l'arête de fusion (14) est de préférence de forme annulaire et s'étend radialement à l'extérieur sur la face inférieure du manchon (5).
  6. Réservoir à air comprimé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le manchon (5) présente, sur sa face inférieure tournée vers le perçage (4), un rétrécissement (13) et/ou une saillie saillante axialement et/ou un ergot en saillie, dans lequel le rétrécissement (13) et/ou la saillie et/ou l'ergot présentent, au moins sur leur extrémité éloignée du manchon (5), un diamètre extérieur qui est plus petit que le diamètre intérieur du perçage (4) et le rétrécissement (13), la saillie ou l'ergot présente un diamètre extérieur, qui remplit au moins à peu près entièrement le perçage (4).
  7. Réservoir à air comprimé selon la revendication 6, caractérisé en ce que le rétrécissement (13), la saillie ou l'ergot présente un bord extérieur chanfreiné, de telle manière que le diamètre extérieur du rétrécissement (13), de la saillie ou de l'ergot diminue en direction de leur extrémité libre, ou que le rétrécissement (13), la saillie ou l'ergot soit réalisé sous la forme d'un épaulement avec un diamètre extérieur sensiblement constant.
  8. Réservoir à air comprimé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la région de l'enveloppe (2) entourant le perçage (4) et/ou le fond extérieur (3) est plan(e) ou aplati(e).
  9. Réservoir à air comprimé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le revêtement de poudre est déposé par voie électrostatique, par une charge triboélectrique sur la face intérieure (1a) du réservoir à air comprimé (1).
  10. Procédé de fabrication d'un réservoir à air comprimé (1) pour véhicules utilitaires, en particulier pour des suspensions pneumatiques de véhicules utilitaires, selon lequel on cintre une enveloppe tubulaire ou cylindrique (2) à partir d'une platine, selon lequel on fabrique deux fonds extérieurs (3) par emboutissage ou estampage et on les soude aux faces frontales de l'enveloppe (2), dans lequel au moins un fond extérieur (3) et/ou l'enveloppe (2) est doté(e) d'un perçage (4) sur lequel on soude un manchon (5), et selon lequel au moins la face intérieure (1a) du réservoir à air comprimé (1) est munie d'un revêtement intérieur (6), caractérisé en ce que
    10.1. les faces de contact (2a, 3a) entre l'enveloppe (2) et les fonds extérieurs (3) sont configurées de telle manière que les faces de contact (2a, 3a) puissent buter à plat ou bout à bout l'une contre l'autre, selon lequel les faces de contact (2a, 3a) sont soudées l'une à l'autre par soudage au laser sans matériau d'apport;
    10.2. le manchon (5) est appliqué sur les perçages (4) par soudage au laser ou par soudage CD; et
    10.3. le revêtement intérieur (6) est réalisé par un revêtement de poudre.
  11. Procédé selon la revendication 10, caractérisé en ce que le procédé de revêtement de poudre est un procédé électrostatique de revêtement de poudre, de préférence en utilisant une charge triboélectrique.
  12. Procédé selon la revendication 11, caractérisé en ce que l'on utilise une tribo-lance (15) pour le dépôt de la poudre sur la face intérieure (1a) du réservoir à air comprimé (1).
  13. Dispositif pour la mise en ouvre du procédé selon la revendication 10, caractérisé par les caractéristiques suivantes:
    13.1. une lance (15) avec une tête de pulvérisation (16) à introduire dans le réservoir à air comprimé (1);
    13.2. un boulon (18) avec un perçage intérieur à introduire dans un perçage (4) dans le fond extérieur (3) afin de créer une ouverture d'accès pour la lance (15);
    13.3. un support (17) destiné à recevoir un réservoir à air comprimé (1), de telle manière que l'ouverture d'accès soit dirigée vers le bas; et
    13.4. un dispositif (19) permettant d'introduire la lance (15) à travers l'ouverture d'accès et de la retirer de nouveau après avoir distribué la poudre de revêtement.
  14. Dispositif selon la revendication 13, caractérisé en ce qu'il est prévu un dispositif (21) pour le séchage de la poudre déposée à une température de 150° à 250°C, de préférence de 200°C.
  15. Dispositif selon la revendication 13 ou 14, caractérisé en ce que la partie de la lance (15) à introduire dans le boulon (18) et la tête de pulvérisation (16) présentent un diamètre extérieur de 20 mm au maximum, de préférence de 15 mm au maximum.
EP09799332A 2008-12-19 2009-12-17 Réservoir à air comprimé pour véhicules utilitaires et procédé de fabrication de celui-ci Active EP2373920B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008063859 2008-12-19
DE102009020385A DE102009020385A1 (de) 2008-12-19 2009-05-08 Druckluftbehälter für Nutzfahrzeuge und Verfahren zu dessen Herstellung
PCT/EP2009/067405 WO2010070044A1 (fr) 2008-12-19 2009-12-17 Réservoir à air comprimé pour véhicules utilitaires et procédé de fabrication de celui-ci

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Publication Number Publication Date
EP2373920A1 EP2373920A1 (fr) 2011-10-12
EP2373920B1 true EP2373920B1 (fr) 2012-11-28

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US (1) US8978251B2 (fr)
EP (1) EP2373920B1 (fr)
JP (1) JP5527746B2 (fr)
KR (1) KR101690341B1 (fr)
CN (1) CN102257310B (fr)
AU (1) AU2009327055A1 (fr)
BR (1) BRPI0922432B1 (fr)
CA (1) CA2759106C (fr)
DE (2) DE102009020385A1 (fr)
MX (1) MX2011006569A (fr)
RU (1) RU2493475C2 (fr)
WO (1) WO2010070044A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN106017554B (zh) * 2016-05-18 2018-02-27 浙江大学 同时测量纤维缠绕金属内衬压力容器的温度和压力的装置

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JP2012512997A (ja) 2012-06-07
BRPI0922432A2 (pt) 2020-08-11
US8978251B2 (en) 2015-03-17
WO2010070044A1 (fr) 2010-06-24
RU2493475C2 (ru) 2013-09-20
KR20110113174A (ko) 2011-10-14
CN102257310A (zh) 2011-11-23
BRPI0922432B1 (pt) 2021-02-02
CA2759106A1 (fr) 2010-06-24
AU2009327055A1 (en) 2011-06-30
MX2011006569A (es) 2011-10-06
EP2373920A1 (fr) 2011-10-12
DE102009020385A1 (de) 2010-07-01
KR101690341B1 (ko) 2016-12-27
CA2759106C (fr) 2016-08-09
JP5527746B2 (ja) 2014-06-25
US20110253727A1 (en) 2011-10-20
DE202009017967U1 (de) 2010-11-25
RU2011129823A (ru) 2013-01-27

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