Pressure vessel longitudinal vents

• US 9,618,160 B2
• Filed: 02/03/2010
• Issued: 04/11/2017
• Est. Priority Date: 02/06/2009
• Status: Active Grant

• Current Assignee: Hexagon Technology H2 As (Hexagon Composites ASA)
• Original Assignee: Hexagon Technology AS
• Inventors: Eihusen, John A., Newhouse, Norman Lynn, Kleinschmit, Nicholas Noel
• Primary Examiner(s): Reynolds, Steven A.
• Assistant Examiner(s): Pagan, Javier A
• Application Number:
  US13/147,624
• Publication Number:
  US 20120048865A1
• Time in Patent Office: 2,624 Days
• Field of Search: 220 891, 220586, 220587, 220591, 220745, 220913, 220 412, 220 6211, 220 6221, 220 6222, 220581, 220588
• CPC Class Codes: F17C 13/002 for vessels under pressure F17C13/008 and F17C13/02 - F17C13/12 take precedence
• CPC Class Codes: F17C 2201/0109 with exteriorly curved end-piece
• CPC Class Codes: F17C 2201/0119 with flat end-piece
• CPC Class Codes: F17C 2201/056 Small (<1 m3)
• CPC Class Codes: F17C 2203/0604 Liners
• CPC Class Codes: F17C 2203/0621 with three layers
• CPC Class Codes: F17C 2203/0624 with four or more layers
• 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 2209/2154 Winding
• CPC Class Codes: F17C 2221/011 Oxygen
• CPC Class Codes: F17C 2221/012 Hydrogen
• CPC Class Codes: F17C 2221/014 Nitrogen
• CPC Class Codes: F17C 2221/033 Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
• CPC Class Codes: F17C 2221/035 Propane butane, e.g. LPG, GPL
• CPC Class Codes: F17C 2223/0123 gaseous, e.g. CNG, GNC
• CPC Class Codes: F17C 2223/036 Very high pressure (>80 bar)
• CPC Class Codes: F17C 2227/044 by purging
• CPC Class Codes: F17C 2260/011 Improving strength
• CPC Class Codes: F17C 2260/037 Handling leaked fluid
• CPC Class Codes: F17C 2260/038 : Detecting leaked fluid
• CPC Class Codes: F17C 2260/04 : Reducing risks and environmental impact
• CPC Class Codes: Y02E 60/32 : Hydrogen storage

Abstract

The disclosure describes a pressure vessel having a first end with a first boss and a cylindrical portion. The vessel includes a liner, a composite shell disposed over the liner, and a first longitudinal vent disposed between the liner and the composite shell. The first longitudinal vent includes an elongated vent defining element and extends at least from the cylindrical portion of the vessel to the first boss.

Claims

1. A pressure vessel having a first end with a first boss and the vessel having a cylindrical portion, the vessel comprising:

a liner;

a composite shell disposed over the liner;

a first longitudinal vent disposed between the liner and the composite shell, the first longitudinal vent comprising an elongated vent defining element, the first longitudinal vent extending at least from the cylindrical portion to the first boss; and

a tape disposed between the vent defining element and the composite shell.

2. The pressure vessel of claim 1 wherein the vent defining element is fluid permeable.

3. The pressure vessel of claim 1 further comprising an adhesive layer disposed on the tape.

4. The pressure vessel of claim 1 wherein the tape comprises a plurality of holes.

5. The pressure vessel of claim 1 further comprising an adhesive layer disposed on the vent defining element.

6. The pressure vessel of claim 1 wherein an end of the first longitudinal vent is disposed along an outer surface of a neck of the first boss.

7. The pressure vessel of claim 6 wherein the end is open to the atmosphere.

8. A pressure vessel having a first end with a first boss and having a second end with a second boss, the vessel having a cylindrical portion, the vessel comprising:

a liner;

a composite shell disposed over the liner;

a plurality of first longitudinal vents disposed between the liner and the composite shell, each first longitudinal vent comprising a first elongated vent defining element, each first longitudinal vent extending at least from the cylindrical portion to the first boss; and

a plurality of second longitudinal vents disposed between the liner and the composite shell, each second longitudinal vent comprising a second elongated vent defining element, each second longitudinal vent extending at least from the cylindrical portion to the second boss;

wherein each of the plurality of first longitudinal vents is circumferentially offset around the cylindrical portion of the vessel from each of the plurality of second longitudinal vents.

9. The pressure vessel of claim 8 wherein an end of at least one of the first and second longitudinal vents is disposed along an outer surface of a neck of the first or second boss.

10. The pressure vessel of claim 9 wherein the end is open to the atmosphere.

11. The pressure vessel of claim 8 wherein at least one of the first and second vent defining elements is fluid permeable.