Composite pressure vessel

• US 5,462,193 A
• Filed: 10/06/1993
• Issued: 10/31/1995
• Est. Priority Date: 10/06/1993
• Status: Expired due to Fees

• Current Assignee: Raul A.I. Schoo
• Original Assignee: Raul A.I. Schoo
• Inventors: Schoo, Raul A. I.
• Primary Examiner(s): MOY, JOSEPH MAN
• Application Number:
  US08/132,574
• Time in Patent Office: 755 Days
• Field of Search: 220/581, 220/592, 220/652, 220/653, 220/89.1
• US Class Current: 220/652
• CPC Class Codes: F17C 1/02 involving reinforcing arrangements F17C1/14, F17C1/16 take precedence
• CPC Class Codes: F17C 1/16 constructed of plastics materials shaping of plastics B29C
• CPC Class Codes: F17C 2201/0109 with exteriorly curved end-piece
• CPC Class Codes: F17C 2201/0114 with interiorly curved end-piece
• CPC Class Codes: F17C 2201/0119 with flat end-piece
• CPC Class Codes: F17C 2201/0157 Polygonal
• CPC Class Codes: F17C 2201/052 large (>1000 m3)
• CPC Class Codes: F17C 2201/054 medium (>1 m3)
• CPC Class Codes: F17C 2203/013 in the vessel, e.g. columns
• CPC Class Codes: F17C 2203/0617 with one layer
• CPC Class Codes: F17C 2203/0636 Metals
• CPC Class Codes: F17C 2203/0658 Synthetics
• CPC Class Codes: F17C 2203/066 Plastics
• CPC Class Codes: F17C 2203/0663 in form of fibers or filaments
• CPC Class Codes: F17C 2205/0305 Bosses, e.g. boss collars
• CPC Class Codes: F17C 2205/0397 on both sides of the pressure vessel
• CPC Class Codes: F17C 2209/221 Welding
• CPC Class Codes: F17C 2223/035 High pressure (>10 bar)
• CPC Class Codes: F17C 2260/012 Reducing weight
• CPC Class Codes: F17C 2260/018 Adapting dimensions
• CPC Class Codes: F17C 2270/0171 : Trucks

Abstract

In a preferred embodiment, a composite pressure vessel for the containment of pressurized fluid, including: at least two opposed walls regions; and a plurality of internal fibers fixedly attached to and extending between the at least two opposed wall regions, interiorly of the pressure vessel, so as to resist the force of the pressurized fluid tending to force the at least two opposed wall regions apart.

Claims

1. A composite pressure vessel for the containment generally a highly pressurized fluid, comprising:

(a) a plurality of opposed walls;

(b) a plurality of internal fibers fixedly attached to and extending between said at least two of said plurality of opposed walls interiorly of said pressure vessel, and set with a predetermined tension, so as to resist the force of said pressurized fluid tending to force said at least two of said plurality of opposed walls apart; and

(c) said plurality of internal fibers forming generally parallel sets of fibers disposed in a series of aligned rows so that the internal fibers emanate over a generally large portion of the opposed wall; and

said internal fibers being offset so as not to intersect with each other, and being selected from the group comprising a single fiber strand, twisted fiber strands, and plaited fiber strand;

whereby said internal fibers enable the containment of very high working pressures in said pressure vessel while minimizing the wall thicknesses of said pressure vessel thereby enabling the application of said pressure vessel in any situation where weight is a detriment.

2. A composite pressure vessel, as defined in claim 1, further comprising:

encircling reinforcing fibers disposed and wrapped about the outer periphery of said pressure vessel and said reinforcing fibers being impregnated with a resin material.

3. A composite pressure vessel, as defined in claim 1, wherein said pressure vessel is quadrilateral.

4. A composite pressure vessel, as defined in claim 1, wherein said pressure vessel is cylindrical.

5. A composite pressure vessel, as defined in claim 2, wherein said pressure vessel includes top and bottom walls and two pairs of opposed side walls, with a resin material joining said side walls to said top and bottom walls and joining pairs of adjacent side walls.

6. A composite pressure vessel, as defined in claim 2, wherein said plurality of internal fibers comprise one set orthogonally disposed between said top and bottom walls, a second set orthogonally disposed between one pair of said two pairs of opposed side walls, and a third set orthogonally disposed between a second pair of said two pairs of opposed side walls.

7. A composite pressure vessel, as defined in claim 1, wherein:

(a) said fibers are orthogonally disposed between all opposed walls; and

(b) said fibers comprise a single fiber threaded through and between apertures defined in said plurality of opposed walls so as to lace together said plurality of opposed walls.

8. A composite pressure vessel as defined in claim 7, wherein said apertures are of rounded funnel shape with each having a small diameter facing interiorly of said pressure vessel, and defining a narrow channel at a proximal end thereof leading into said pressure vessel and with an enlarged diameter portion at an opposite, distal end therof, and said apertures being spaced from one another so as to form a convex, rounded cross-sectional areas over which said single fiber is placed when said single fiber is threaded from one aperture to an adjacent aperture.

9. A composite vessel, as defined in claim 8, wherein all of said apertures are sealed with a resin material after said single fiber is threaded between said at least two opposed walls and secured thereto under tension.

10. A composite pressure vessel as defined in claim 1, wherein said internal fibers are made from a synthetic material.

11. A composite pressure vessel, as defined in claim 3, wherein said pressure vessel is a tank on a tank truck.

12. A composite pressure vessel, as defined in claim 1, wherein said internal fibers are formed from Kevlar.

13. A composite pressure vessel, as defined in claim 2, wherein said encircling reinforcing fibers are formed from fiberglass.

14. A composite pressure vessel, as defined in claim 8, wherein said apertures are spaced such that two adjacent said apertures define a cross-section therebetween having smooth rounded corners over which said single fiber is placed when said single fiber is threaded from one aperture to an adjacent aperture.

15. A composite pressure vessel, as defined in claim 7, wherein said apertures are spaced apart on a matrix defined by the shape of said wall region.

16. A composite pressure vessel, as defined in claim 5, wherein said top, bottom, and side walls are joined at spaced apart 90-degree edges thereof.

17. A composite pressure vessel, as defined in claim 5, wherein said top, bottom, and side walls are joined at spaced apart beveled edges thereof.

18. A composite pressure vessel, as defined in claim 5, wherein said top, bottom, and side walls are joined at spaced apart, complementary, stepped edges thereof.

19. A composite pressure vessel, as defined in claim 6, wherein said sets of fibers are slightly offset from one another so as to avoid intersection thereof.

20. A composite pressure vessel, as defined in claim 2, wherein said encircling fibers are disposed in two orthogonally disposed sets of fibers.

21. A composite pressure vessel as defined in claim 1, wherein said internal fibers may be made of a strong material or.

22. A composite pressure vessel as defined in claim 1, further including at least one connecting means serving as an inlet/outlet connection for said composite pressure vessel.

23. A composite pressure vessel as defined in claim 22, wherein said at least one connecting means comprises two connections, one of which is an inlet and the other of which is an outlet.

24. A composite pressure vessel as defined in claim 1, wherein said plurality of internal fibers comprise a material which does not corrode or react with the fluid carried in said composite pressure vessel.

25. A composite pressure vessel as defined in claim 1, wherein said internal fibers are in the form of a twisted fiber strand.