US2148234A - Pressure container and process of making same - Google Patents

Pressure container and process of making same Download PDF

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Publication number
US2148234A
US2148234A US67027A US6702736A US2148234A US 2148234 A US2148234 A US 2148234A US 67027 A US67027 A US 67027A US 6702736 A US6702736 A US 6702736A US 2148234 A US2148234 A US 2148234A
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sections
pressure container
container
zones
spherical
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US67027A
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Debor Hermann
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Dominion Oxygen Co Ltd
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Dominion Oxygen Co Ltd
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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
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • 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
    • F17C2201/0147—Shape complex
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • 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
    • 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
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • 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
    • 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
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • 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
    • F17C2260/011—Improving strength

Definitions

  • This invention relates to containers for highly compressed or liquefied gases.
  • cylindrilcal vessels may be subjected to inward pressure at suitable spaced intervals to constrict the same to a reduced diameter, after which the intermediate zones may be expanded to spheroidal shape.
  • pressure containers may also be produced by casting, or by appropriately rolling,
  • a pressure container of the type described may be economically produced from a number ,of separate parts.
  • the individual parts may be produced in a swage by a pressing or hammering operation, by casting in a chill mold, or by electrolytic means. These parts may then be properly assembled and welded together into a unitary hollow metal pres sure vessel consisting of a. series of interconnected spheroidal zones which possess the characteristics of the pressure containers disclosed in my prior applications.
  • an improved pressure container embodying this invention may be built up of a number of separately formed metal sections A, B and C which, when properly'assembled, may be united by fusion welding (using the oxy-acetylene flame or the electric arc and with or without added weld metal) to form a rigid unitary container adapted to withstand high internal pressure.
  • These individual sections may be separately formed in any appropriate manner, as by pressing, casting, etc. l
  • the hollow top section A has a substantially 5o hemi-spherical portion and is provided with a neck N to receive the closure fitting of the container.
  • the hollow bottom section C also is hemi-spherical in shape.
  • One or more hollow intermediate sections, similar to section B, may be disposed between and united to and in axial align- (ciao-148.2)
  • the intermediate section B which is of generally hour- 5 glass shape, consists of two substantially hemispherical zones or portions B and B", disposed back to back and integrally united circumferentially along their adjoining portions at the restriction R.
  • the section B may be constructed 10 from a cylindrical metal tube by appropriately shaping the latter, as by restricting the midportion of a tube of the maximum diameter of the container while pressing the portions B, B"
  • the hemi-spherical portions of the several sections are of the same diameter.
  • they may be united by forming circumferential fusion welds W, W along the opposed edges of the section A and portion B, and along the opposed edges of the section 0 and 25 the portion B", respectively.
  • the girth welds W, W may be of any type adapted to provide a strong joint that will withstand the high internal pressure.
  • the open ends of the sections A and C, as well as the ends of the section B may 30 be flanged or bent inwardly as at X and Y, respectively, to provide welding grooves G', G when the sections are assembled in position for welding.
  • the circumferentially extending weld metal may fill the grooves G, G substantially flush with 35 the outer surfaces of the spherical zones thus formed.
  • the flanges X may be somewhat shorter than the flanges Y so that the ends of the former will abut against the sides of the latter.
  • a metallic 55 pressure container comprising a plurality of interconnected spheroidal zones and having a maximum capacity for a given weight and strength.
  • Process for producing a rigid metallic pressure container having a plurality of substantially spherical zones which comprises separately forming hollow substantially hemi-spherical end sections, forming one or more separate intermediate sections each comprising a pair of substantially hemi-spherical portions disposed back to back, assembling said sections in alignment and welding the open ends of said end sections to the similar opposed open ends of such intermediate sections.
  • each intermediate section is formed in one piece from a tubular metal body, and the opposed ends of the several sections are flanged inwardly to provide a circumferential welding groove at each joint, and weld metal is deposited in each groove to fill the same substantially flush with the outer surface of the container.
  • the step comprising flanging the adjacent ends of the several sections inwardly to provide a circumferential welding groove at each joint, one flange of each joint being formed so that its edge abuts against the face of the adjoining flange.
  • the step comprising flanging the adjacent ends of the several sections inwardly to form substantially a right-angled circumferential welding groove, one flange of each joint being formed shorter than the adjoining flange so that the edge of the shorter flange becomes flush with the face of the adjoining flange when in assembled relation.
  • a rigid pressure container having a plurality of substantially spherical zones comprising top and bottom sections having substantially hemispherical portions; one or more separate intermediate sections in axial alignment therewith and having substantially hemi-spherical portions disposed back to back; and welded circumferential joints severally uniting the open ends of the top and bottom sections to the opposed open ends of the adjoining intermediate section.
  • a metallic pressure container adapted to withstand high internal pressure and having a plurality of axially alined interconnected spheroidal zones, said container comprising a top section having a neck adapted to receive a closure fitting and also having a hemi-spherical portion; a bottom section having a hemi-spherical portion; and one or more intermediate sections, each intermediate section comprising a pair of hemispherical portions disposed back to back, the hemi-spherical portions 01 the several sections being of the same diameter and the several sections being welded together in axial alignment so as to form a series of interconnected and substantially complete spheroidal zones, the opposed ends of the several sections being united by welds extending circumferentially of the zones at their greatest girth.
  • a rigid pressure container having a plurality of substantially spherical zones comprising top and bottom sections having substantially hemispherical portions; one or more separately formed intermediate sections comprising hollow elements of generally hour-glass shape; and welded circumierential joints severally uniting the open ends of said top and bottom sections to the opposed open ends of the adjoining intermediate section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Description

Feb. 21, 1939. H. DEBOR 4 2,148,234
PRESSURE CONTAINER AND PROCESS OF MAKING SAME Filed March 4, 1936 INVENTOR HERMANN DEBOR ATTORNEY Patented Feb. .21, 1939 PATENT OFFICE PRESSURE CONTAINER AND PROCESS OF MAKING SAME Hermann Debor, Munich, Germany, assignor to Dominion Oxygen Company, Limited, a. corporation of Canada Application March 4, 1936, Serial No. 67,027
Germany March 6, 1935 11 Claims.
This invention relates to containers for highly compressed or liquefied gases.
In my applications, Serial Nos. 458,435, 675,681, and 682,525, issued January 25, 1938, as Patents Nos. 2,106,494, 2,106,495, and 2,106,496, I have I disclosed various processes. for manufacturing pressure containers of metal consisting of internected spheroidal zones. For example, pressuretight rings, bands or similar metal members may be located at suitable intervals around a cylindrical hollow metal body, such hollow body being then distended in either a cold or a warm state to expand into spherical shape the zones between the spaced circumferential rings or bands. Also, cylindrilcal vessels may be subjected to inward pressure at suitable spaced intervals to constrict the same to a reduced diameter, after which the intermediate zones may be expanded to spheroidal shape. Such pressure containers may also be produced by casting, or by appropriately rolling,
pressing or hammering tubes.
According to the present invention, a pressure container of the type described may be economically produced from a number ,of separate parts.- The individual parts may be produced in a swage by a pressing or hammering operation, by casting in a chill mold, or by electrolytic means. These parts may then be properly assembled and welded together into a unitary hollow metal pres sure vessel consisting of a. series of interconnected spheroidal zones which possess the characteristics of the pressure containers disclosed in my prior applications.
The single figure of the accompanying drawing illustrates one form of an improved pressure container produced in accordance with the principles of the present invention.
As shown by the drawing, an improved pressure container embodying this invention may be built up of a number of separately formed metal sections A, B and C which, when properly'assembled, may be united by fusion welding (using the oxy-acetylene flame or the electric arc and with or without added weld metal) to form a rigid unitary container adapted to withstand high internal pressure. These individual sections may be separately formed in any appropriate manner, as by pressing, casting, etc. l
The hollow top section A has a substantially 5o hemi-spherical portion and is provided with a neck N to receive the closure fitting of the container. The hollow bottom section C also is hemi-spherical in shape. One or more hollow intermediate sections, similar to section B, may be disposed between and united to and in axial align- (ciao-148.2)
section A and the bottom section C. The intermediate section B, which is of generally hour- 5 glass shape, consists of two substantially hemispherical zones or portions B and B", disposed back to back and integrally united circumferentially along their adjoining portions at the restriction R. The section B may be constructed 10 from a cylindrical metal tube by appropriately shaping the latter, as by restricting the midportion of a tube of the maximum diameter of the container while pressing the portions B, B"
to hemi-spherical shape; or by starting with a 15 tube having the diameter of the constriction R and by flaring or pressing out .the end hemispherical portions B, B".
The hemi-spherical portions of the several sections are of the same diameter. After the sev- 20 eral sections have been properly assembled in axial alignment, they may be united by forming circumferential fusion welds W, W along the opposed edges of the section A and portion B, and along the opposed edges of the section 0 and 25 the portion B", respectively. The girth welds W, W may be of any type adapted to provide a strong joint that will withstand the high internal pressure. As shown, the open ends of the sections A and C, as well as the ends of the section B may 30 be flanged or bent inwardly as at X and Y, respectively, to provide welding grooves G', G when the sections are assembled in position for welding. The circumferentially extending weld metal may fill the grooves G, G substantially flush with 35 the outer surfaces of the spherical zones thus formed. The flanges X may be somewhat shorter than the flanges Y so that the ends of the former will abut against the sides of the latter. These internal flanges and the co-extensive circumfer- 40 ential welds uniting them provide girth reinforcements for the container about each spheroidal zone in the plane of its great diameter perpendicular to the container axis.
It will be obvious that substantially the same 45 procedure as that just described may be followed in constructing a container embodying more than one intermediate section B. Inthis case, the severalintermediate sections may be joined to one another by circumferential welds similar to 5 those shown at W and W, preferably before the top and bottom sections A and C are welded into place.
By means of the hereindescribed process it is possible to more economically construct a metallic 55 pressure container comprising a plurality of interconnected spheroidal zones and having a maximum capacity for a given weight and strength.
While a typical embodiment of my invention has been shown and described, it will be understood that various changes may be made in the construction disclosed without departing from the principles of this invention or sacriflcing its advantages.
What is claimed is:
1. Process for producing a rigid metallic pressure container having a plurality of substantially spherical zones which comprises separately forming hollow substantially hemi-spherical end sections, forming one or more separate intermediate sections each comprising a pair of substantially hemi-spherical portions disposed back to back, assembling said sections in alignment and welding the open ends of said end sections to the similar opposed open ends of such intermediate sections.
2. Process according to claim 1 in which the opposed ends of the several sections are flanged inwardly to provide a circumferential welding groove at each joint and to reinforce such joint.
' 3. Process according to claim 1 in which each intermediate section is formed in one piece from a tubular metal body, and the opposed ends of the several sections are flanged inwardly to provide a circumferential welding groove at each joint, and weld metal is deposited in each groove to fill the same substantially flush with the outer surface of the container.
4. In the process of producing a pressure container of assembled hollow substantially hemispherical sections, the step comprising fianging the adjacent ends of the several sections inwardly to provide a circumferential welding groove at each joint, one flange of each joint being formed shorter than the adjoining flange.
5. In the process of producing a pressure container of assembled hollow substantially hemispherical sections, the step comprising flanging the adjacent ends of the several sections inwardly to provide a circumferential welding groove at each joint, one flange of each joint being formed so that its edge abuts against the face of the adjoining flange.
6. In the process of producing a pressure container of assembled hollow substantially hemispherical sections, the step comprising flanging the adjacent ends of the several sections inwardly to form substantially a right-angled circumferential welding groove, one flange of each joint being formed shorter than the adjoining flange so that the edge of the shorter flange becomes flush with the face of the adjoining flange when in assembled relation.
7. A rigid pressure container having a plurality of substantially spherical zones comprising top and bottom sections having substantially hemispherical portions; one or more separate intermediate sections in axial alignment therewith and having substantially hemi-spherical portions disposed back to back; and welded circumferential joints severally uniting the open ends of the top and bottom sections to the opposed open ends of the adjoining intermediate section.
8. A pressure container as claimed in claim '7, in which said intermediate section is unitary and formed from a tube.
9. A pressure container as claimed in claim 7, in which the opposed parts of the several sections are shaped to form circumferential welding grooves when assembled, and said grooves are filled with weld metal.
10. A metallic pressure container adapted to withstand high internal pressure and having a plurality of axially alined interconnected spheroidal zones, said container comprising a top section having a neck adapted to receive a closure fitting and also having a hemi-spherical portion; a bottom section having a hemi-spherical portion; and one or more intermediate sections, each intermediate section comprising a pair of hemispherical portions disposed back to back, the hemi-spherical portions 01 the several sections being of the same diameter and the several sections being welded together in axial alignment so as to form a series of interconnected and substantially complete spheroidal zones, the opposed ends of the several sections being united by welds extending circumferentially of the zones at their greatest girth.
11. A rigid pressure container having a plurality of substantially spherical zones comprising top and bottom sections having substantially hemispherical portions; one or more separately formed intermediate sections comprising hollow elements of generally hour-glass shape; and welded circumierential joints severally uniting the open ends of said top and bottom sections to the opposed open ends of the adjoining intermediate section.
HERMANN DEBOR.
US67027A 1935-03-06 1936-03-04 Pressure container and process of making same Expired - Lifetime US2148234A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503191A (en) * 1947-06-30 1950-04-04 Mcnamar Boiler & Tank Company Method of forming tanks of spherical configuration
US2661113A (en) * 1951-01-08 1953-12-01 Ernest H Benson High-pressure container with adapter for discharge apertures
US3029963A (en) * 1958-01-22 1962-04-17 Evers Heinz Bottle
US3137936A (en) * 1959-08-14 1964-06-23 British Oxygen Co Ltd Fusion welding
US3498756A (en) * 1966-05-26 1970-03-03 Universal Oil Prod Co Multiple stage reactor suitable for high pressures
US6047860A (en) * 1998-06-12 2000-04-11 Sanders Technology, Inc. Container system for pressurized fluids
US6412650B1 (en) 1999-05-03 2002-07-02 Alliant Techsystems Inc. End closure modules for multi-cell pressure vessels, and pressure vessels and vehicles containing the same
DE102013211102A1 (en) * 2013-06-14 2014-12-31 Siemens Aktiengesellschaft Design method of a hollow body and hollow body
US20220290818A1 (en) * 2021-03-09 2022-09-15 American Exchanger Services, Inc. Energy Storage Using Spherical Pressure Vessel Assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503191A (en) * 1947-06-30 1950-04-04 Mcnamar Boiler & Tank Company Method of forming tanks of spherical configuration
US2661113A (en) * 1951-01-08 1953-12-01 Ernest H Benson High-pressure container with adapter for discharge apertures
US3029963A (en) * 1958-01-22 1962-04-17 Evers Heinz Bottle
US3137936A (en) * 1959-08-14 1964-06-23 British Oxygen Co Ltd Fusion welding
US3498756A (en) * 1966-05-26 1970-03-03 Universal Oil Prod Co Multiple stage reactor suitable for high pressures
US6047860A (en) * 1998-06-12 2000-04-11 Sanders Technology, Inc. Container system for pressurized fluids
US6412650B1 (en) 1999-05-03 2002-07-02 Alliant Techsystems Inc. End closure modules for multi-cell pressure vessels, and pressure vessels and vehicles containing the same
DE102013211102A1 (en) * 2013-06-14 2014-12-31 Siemens Aktiengesellschaft Design method of a hollow body and hollow body
US20220290818A1 (en) * 2021-03-09 2022-09-15 American Exchanger Services, Inc. Energy Storage Using Spherical Pressure Vessel Assembly

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