Pressure vessel having wet-wrapped carbon-fiber-reinforced plastic

Patent metadata

Field	Value
Publication number	US-10260678-B2
Application number	US-201615237675-A
Country	US
Kind code	B2
Filing date	Aug 16, 2016
Priority date	May 12, 2014
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

A method is provided for producing a pressure vessel from a metal liner, which is reinforced at an outer lateral surface thereof by fiber composite material having a resin matrix. In at least one production step, the resin matrix of the fiber composite material is subjected to an ultrasound treatment.

First claim

What is claimed is:

1. A method of producing a pressure vessel, the method comprising the acts of:
reinforcing a metal liner at an outer lateral surface thereof via fiber composite material having a resin matrix;
rotating the metal liner about a rotation axis of the pressure vessel to enable the metal liner to be wound with the fiber composite material via a winding method; and
in at least one production step, degassing air or air bubbles from the resin matrix by subjecting the resin matrix of the fiber composite material to an ultrasound treatment, wherein
the ultrasound waves are input in such a way that an increased degassing rate due to ultrasonic excitation occurs only in a region of an upper half shell of the metal liner that is above an imaginary horizontal sectional plane containing the rotation axis of the pressure vessel during rotation of the metal liner.

2. The method according to claim 1 , wherein one or more characteristics of ultrasound waves used during the ultrasound treatment are chosen to provide an increased degassing rate of enclosed air or air bubbles from the resin matrix compared to when no ultrasound treatment is applied.

3. The method according to claim 2 , wherein the ultrasound waves are input during the ultrasound treatment via one or more ultrasound probes coupled mechanically or acoustically to the metal liner.

4. The method according to claim 3 , wherein the one or more ultrasound probes are coupled to a respective inlet stub or outlet stub of the metal liner of the pressure vessel.

5. The method according to claim 1 , wherein the act of reinforcing the metal liner is carried out by applying the fiber composite material to the outer lateral surface of the metal liner via the winding method.

6. The method according to claim 5 , wherein the ultrasound treatment is carried out during the winding method.

7. The method according to claim 5 , wherein ultrasound waves are input during the ultrasound treatment via one or more ultrasound probes coupled mechanically or acoustically to the metal liner.

8. The method according to claim 7 , wherein the one or more ultrasound probes are coupled to a respective inlet stub or outlet stub of the metal liner of the pressure vessel.

9. The method according to claim 1 , wherein the ultrasound treatment of the resin matrix occurs before applying the fiber composite material to the outer lateral surface of the metal liner.

10. The method according to claim 1 , wherein the ultrasound treatment of the resin matrix occurs during a curing process.

11. The method according to claim 10 , wherein the ultrasound treatment during the curing process occurs in a vacuum chamber.

12. The method according to claim 1 , wherein the fiber composite material is composed of carbon and/or glass fibers.

13. A method of producing a pressure vessel, the method comprising the acts of:
reinforcing a metal liner at an outer lateral surface thereof by winding fiber composite material having a resin matrix onto the outer lateral surface of the metal liner;
rotating the metal liner about a rotation axis of the pressure vessel to enable the metal liner to be wound with the fiber composite material; and
degassing air or air bubbles from the resin matrix by subjecting the resin matrix of the fiber composite material to an ultrasound treatment while winding the fiber composite onto the outer lateral surface of the metal liner, wherein
ultrasound waves are input in such a way that an increased degassing rate due to ultrasonic excitation occurs only in a region of an upper half shell of the metal liner that is above an imaginary horizontal sectional plane containing the rotation axis of the pressure vessel during rotation of the metal liner.

14. The method according to claim 13 , wherein an intensity and a wavelength of the ultrasound waves are determined based on a geometry of the metal liner and a property of the fiber composite material.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Christ Timo

Classifications

• F17C2270/0168

  by vehicles · CPC title

• F17C2260/012

  Reducing weight · CPC title

• F17C2260/011

  Improving strength · CPC title

• F17C2223/036

  Very high pressure (>80 bar) · CPC title

• F17C2223/0123

  gaseous, e.g. CNG, GNC · CPC title