Integrated composite mounting structure for use in pressure vessels and pressure vessel systems

Abstract

A pressure vessel mounting structure (10) includes a plurality of bands (11) made of a composite material cured about the exterior surface (35) of the pressure vessel (30) to form an integral part of the vessel. The bands (11) may be spaced apart from one another to form a crisscrossing helical grid pattern with opposing ends (21) of the bands extending past a respective end (31) of the pressure vessel (30) and toward a longitudinal centerline (33) of the pressure vessel (30) to form a skirt (17). The skirt (17) provides mounting points (15) as well as a vertical standing mount for the vessel.

Claims

1. A composite pressure vessel comprising: a vessel mounting structure including a plurality of bands made of a composite material to form a helical grid pattern about, and bonded to, an exterior surface of the composite pressure vessel; the helical grid pattern extending past at least one closed end of the composite pressure vessel to form a skirt, the skirt not coming into contact with the exterior surface of the composite pressure vessel.

2. A composite pressure vessel according to claim 1, further comprising, the composite material including continuous tow resin-impregnated fibers.

3. A composite pressure vessel according to claim 1, further comprising, the plurality of bands being integral to the exterior surface of the composite pressure vessel.

4. A composite pressure vessel according to claim 1, further comprising, the helical grid pattern forming mounting points in the skirt, the mounting points arranged to receive corresponding mounting hardware.

5. A composite pressure vessel according to claim 4, further comprising, at least one of the mounting points being located at an intersection of two bands of the plurality of bands.

6. A composite pressure vessel according to claim 1, further comprising, the skirt including an open end having a diameter less than that of the composite pressure vessel.

7. A composition pressure vessel according to claim 1, further comprising, the helical grid pattern extending past another closed end of the composite pressure vessel to form a second skirt, the helical grid forming mounting points in the second skirt.

8. A composite pressure vessel comprising: a vessel mounting structure including a plurality of bands made of a composite material to form a helical grid pattern about, and bonded to, an exterior surface of the composite pressure vessel, the helical grid pattern extending past at least one closed end of the composite pressure vessel to form a skirt, the skirt not coming into contact with the exterior surface of the composite pressure vessel, the skirt including an open end.

9. A composite pressure vessel according to claim 8, further comprising, the composite material including continuous tow resin-impregnated fibers.

10. A composite pressure vessel according to claim 8, further comprising, the helical grid pattern forming mounting points in the skirt, the mounting points arranged to receive corresponding mounting hardware.

11. A composite pressure vessel according to claim 10, further comprising, at least one of the mounting points being located at an intersection of two bands of the plurality of bands.

12. A composite pressure vessel according to claim 8, further comprising, the open end of the skirt having a diameter less than that of the composite pressure vessel.

13. A composition pressure vessel according to claim 8, further comprising, the helical grid pattern extending past another closed end of the composite pressure vessel to form a second skirt, the helical grid forming mounting points in the second skirt.

14. A method for securing a composite pressure vessel to a host vehicle, the composite pressure vessel including: a vessel mounting structure including a plurality of bands made of a composite material to form a helical grid pattern about, and bonded to, an exterior surface of the composite pressure vessel; the helical grid pattern extending past at least one closed end of the composite pressure vessel to form a skirt, the skirt not coming into contact with the exterior surface of the composite pressure vessel; the helical grid pattern forming mounting points in the skirt, the mounting points arranged to receive corresponding mounting hardware; the method comprising: connecting mounting hardware to at least some of the mounting points; and securing the composite vessel to the host vehicle by way of the mounting hardware.

15. The method of claim 14, wherein, the composite material includes continuous tow resin-impregnated fibers.

16. The method of claim 14, wherein, the skirt includes an open end having a diameter less than that of the composite pressure vessel.

17. The method of claim 14, wherein, the helical grid pattern extends past another closed end of the composite pressure vessel to form a second skirt, the helical grid forming mounting points in the second skirt.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a front elevation view of a preferred embodiment of the mounting structure formed and cured about an exterior of a composite pressure vessel.

(2) FIG. 2 is a detail view taken along section 2 of FIG. 1.

(3) FIG. 3 is a detail view taken along section 3 of FIG. 1.

(4) FIG. 4 is an isometric view of the mounting structure of FIG. 1.

(5) FIG. 5 is a detail view taken along section 5 of FIG. 4.

ELEMENTS AND NUMBERING USED IN THE DRAWINGS AND DETAILED DESCRIPTION

(6) 10 Mounting structure 11 Bands or ribs 13 Central longitudinal axis 15 Mounting points 17 Skirt 21 End 25 Helical grid pattern 30 Composite, cylindrical pressure vessel or pressure vessel 31 End or dome 33 Central longitudinal axis or axis of rotation 35 Exterior surface or body

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(7) Preferred embodiments of a mounting device or structure is integral to a high-pressure vessel and can be used to mount the vessel within a system for transporting fuels or gases or to a vehicle. Some embodiments provide systems and methods for producing a tubular helical ribbed architecture which is integrated into the exterior body of a composite pressure vessel and includes a continuous plurality of fibers impregnated with resin matrix which are wound under tension onto the pressure vessel forming helical composite ribs which extend the length of the vessel, protrude past the cylindrical portion of the vessel and taper past the dome ends toward the central longitudinal axis of the vessel.

(8) Referring now to FIGS. 1 to 5, a preferred embodiment of the mounting structure 10 is made of a plurality of bands or ribs 11 of continuous tow polymer resin-impregnated fibers wrapped about a pressure vessel 30 in a spaced-apart intersecting or crisscrossing helical (grid) pattern. On each end of the vessel 30 the ribs 11 extend past the ends or dome 31 of the vessel 30, with the mounting structure 10 tapered towards the central longitudinal axis or axis of rotation 33 of the vessel (and therefore the central longitudinal axis 13 of the mounting structure 10). In this way, each end 23 of the mounting structure 10 is smaller in diameter than that of the vessel 30 and forms an open end that effectively traps the vessel 10.

(9) The amounting structure 10 is manufactured by filament-winding continuous tows of polymer resin-impregnated fibers around the vessel 30 in an alternating, banded helical wrapping pattern. The vessel 30 is then placed into an oven to cure so the mounting structure 10 becomes integrated into the exterior surface or body 35 of the vessel 30 rather than being a separate structure apart from the vessel 30. Alternatively, the vessel 30 may be cured first with the mounting structure 10 then added and cured to become an integral part of the vessel 30.

(10) Unlike strap-mounted systems, structure 10 forms an integral part of the exterior surface 35 of the vessel 30 and cannot move relative to the vessel 30 or loosen during transport or use. The mounting structure 10 eliminates the need for the prior art two-part metal strap mounting arrangement. The structure 10 also is not neck-mounted, nor does it require the kind of mounting brackets associated with the prior art neck mount.

(11) Once the structure 10 is cured, mounting hardware (not shown) can be installed on mounting points 15 formed by the bands 11 or intersection of the bands 11. The ends 21 may serve as a skirt 17 to enable vertical standing mounts (because the length of the structure 10 is grater than that of the vessel 30). The structure 10 itself protects the vessel 30 from drops and impacts.

(12) The mounting hardware can be any shape preferable—including but not limited to circle, square, hexagonal—depending on the system the vessel 30 is being mounted within. A preferred pressure vessel 30 is composite pressure vessels manufactured by Infinite Composites Technologies (Houston and Tulsa) or their equivalent.