Pressure debulking system

Patent metadata

Field	Value
Publication number	US-9227384-B2
Application number	US-201414148723-A
Country	US
Kind code	B2
Filing date	Jan 6, 2014
Priority date	Dec 14, 2007
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

A pressure debulking system includes a debulking chamber having a debulking chamber interior, a pressure bladder having a bladder interior provided in the debulking chamber interior, a vacuum port disposed in fluid communication with the debulking chamber interior and a pressure port disposed in fluid communication with the debulking chamber interior. A pressure debulking method is also disclosed.

First claim

What is claimed is:

1. A pressure debulking system, comprising:
a debulking chamber having a debulking chamber interior that comprises a chamber opening that communicates with the debulking chamber interior that comprises a pressure bladder that comprises a bladder interior, such that the pressure bladder comprises an expanded position and a relaxed position;
a vacuum port disposed in fluid communication with said debulking chamber interior, the vacuum port configured to receive a vacuum between the pressure bladder and the chamber such that the pressure bladder, in the expanded position, contacts an interior surface of the debulking chamber, and the vacuum port configured to release the vacuum such that the pressure bladder, in the relaxed position, being disengaged from the interior surface of the debulking chamber;
a pressure port disposed in fluid communication with said debulking chamber interior, the pressure port configured to apply gas pressure to the pressure bladder such that when gas presses against the pressure bladder, an interior surface of the pressure bladder to encircles and presses against a mandrel positioned in the debulking chamber interior and within the pressure bladder; and
an end plate positioned on the debulking chamber, such that the end plate comprises a central opening that comprises a size and shape such that the bladder remains inside the debulking chamber interior and allows a first portion of the mandrel to pass through the central opening and extend outside of the chamber while a second portion of the mandrel remains inside the chamber as the bladder encircles and maintains a compression on the second portion of the mandrel.

2. The system of claim 1 further comprising a pressure safety valve disposed in fluid communication with said debulking chamber interior.

3. The system of claim 1 further comprising a pressure gauge provided on said pressure port.

4. The system of claim 1 further comprising a chamber end flange provided on said debulking chamber at the chamber opening.

5. The system of claim 4 further comprising a bladder anchor slot provided in said chamber end flange and wherein said pressure bladder is anchored in said bladder anchor slot.

6. The system of claim 1 further comprising a breather string that communicates with said debulking chamber and extends through the chamber opening.

7. A pressure debulking system that comprises:
a debulking chamber that comprises a debulking chamber interior and at least one chamber opening that communicates with said debulking chamber interior;
a pressure bladder that comprises: a bladder interior provided in said debulking chamber interior, and at least one bladder mouth that communicates with said bladder interior at said at least one chamber opening, such that the pressure bladder comprises an expanded position and a relaxed position;
a vacuum port disposed in fluid communication with said debulking chamber interior, the vacuum port configured to receive a vacuum between the pressure bladder and the chamber such that the pressure bladder, in the expanded position, contacts an interior surface of the debulking chamber, and the vacuum port configured to release the vacuum such that the pressure bladder, in the relaxed position, being disengaged from the interior surface of the debulking chamber;
a pressure port disposed in fluid communication with said debulking chamber interior, the pressure port configured to apply gas pressure to the pressure bladder such that when gas presses against the pressure bladder, an interior surface of the pressure bladder encircles and presses against a mandrel positioned in the debulking chamber interior and within the pressure bladder; and
an end plate positioned on the debulking chamber, such that the end plate comprises a central opening that comprises a size and shape such that the bladder remains inside the debulking chamber interior and allows a first portion of the mandrel to pass through the central opening and extend outside of the chamber while a second portion of the mandrel remains inside the chamber as the bladder encircles and maintains a compression on the second portion of the mandrel.

8. The system of claim 7 further comprising a pressure safety valve disposed in fluid communication with said debulking chamber interior.

9. The system of claim 7 further comprising a pressure gauge provided on said pressure port.

10. The system of claim 7 further comprising a chamber end flange provided on said debulking chamber at said at least one chamber opening.

11. The system of claim 10 further comprising a bladder anchor slot provided in said chamber end flange and wherein said pressure bladder is anchored in said bladder anchor slot.

12. The system of claim 7 further comprising a chamber end plate provided on said debulking chamber at said at least one chamber opening.

13. The system of claim 7 further comprising a breather string communicating with said debulking chamber and extending from said at least one chamber opening.

14. A pressure debulking system for debulking composite materials, comprising:
a debulking chamber that comprises a debulking chamber interior and at least one chamber opening that communicates with said debulking chamber interior;
a pressure bladder that comprises: a bladder interior provided in said debulking chamber interior, and at least one bladder mouth that communicates with said bladder interior at said at least one chamber opening, such that the pressure bladder comprises an expanded position and a relaxed position;
a vacuum port disposed in fluid communication with said debulking chamber interior, the vacuum port configured to receive a vacuum between the pressure bladder and the chamber such that the pressure bladder, in the expanded position, contacts an interior surface of the debulking chamber, and the vacuum port configured to release the vacuum such that the pressure bladder, in the relaxed position, being disengaged from the interior surface of the debulking chamber;
a pressure port disposed in fluid communication with said debulking chamber interior, the pressure port configured to apply gas pressure to the pressure bladder such that when gas presses against the pressure bladder, an interior surface of the pressure bladder encircles and presses against a mandrel positioned in the debulking chamber interior, the mandrel being cylindrical; and
an end plate sealing the chamber opening, wherein a composite layup is positioned on the mandrel, and the end plate is separate from the mandrel, such that the end plate comprises a central opening that comprises a size and shape such that the bladder remains inside the debulking chamber interior and allows a first portion of the mandrel and a breather string to pass through the central opening and extend outside of the chamber while a second portion of the mandrel remains inside the chamber as the bladder encircles and maintains a compression on the second portion of the mandrel.

15. The pressure debulking system of claim 14 further comprising the breather string extending from the composite layup through the end plate to an exterior of the chamber.

Assignees

• Boeing Corp
• Boeing Co

Inventors

• Froeschner Neal A
• Fox Derek J

Classifications

• B32B37/003

  to avoid air inclusion · CPC title

• B32B37/0046 Primary

  characterised by constructional aspects of the apparatus · CPC title

• B29C70/446 Primary

  Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames · CPC title

• B32B2605/18

  Aircraft · CPC title

• B32B37/1018

  using only vacuum · CPC title