Winding and curing method of thin-walled metal-lined fiber fully wound lightweight high-pressure gas cylinder
A metal-lined, high-pressure gas cylinder technology, applied in pressure vessels, fixed-capacity gas storage tanks, gas/liquid distribution and storage, etc., can solve problems such as thin-walled lining instability, achieve high volume characteristic coefficient, avoid destabilizing effect
Active Publication Date: 2016-03-02
SHANGHAI COMPOSITES SCI & TECH CO LTD +1
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Problems solved by technology
Considering that during the winding process, the pre-tightening force caused by the fiber tension can be equivalent to the external pressure, which may lead to instability of the thin-walled lining during the winding process
Method used
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Embodiment
[0028] This embodiment relates to a winding and curing method for a thin-walled metal-lined fiber fully wound lightweight high-pressure gas cylinder, the method comprising the following steps:
[0029] (1) Thin-walled metal-lined fiber fully-wound lightweight high-pressure gas cylinders are made of 6061 aluminum alloy, the thickness of the lining is 1.0mm, and the hydraulic strength test pressure and burst pressure of the gas cylinder are 1.0MPa and 2.3, respectively. MPa, the inflation pressure before lining winding is determined to be 0.6MPa through calculation.
[0030] The elastic stress formula of the high-pressure vessel under the action of internal pressure is:
[0031] σ r = p K 2 - 1 ( 1 - R 0 2 ...
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Abstract
The invention relates to a winding and curing method of a thin-wall metal lining fiber completely-wound light high-pressure gas cylinder. The winding and curing method comprises the following steps of A, feeding gas into a lining until the pressure Pc, and then carrying out sealing treatment, wherein pressure Pc guarantees that the lining is still in an elastic region in a gasing state, B, carrying out wet winding on the lining surface by resin glue liquid mixed-fibers in a spiral and circular way until the lining surface is completely covered, C, curing the wound gas cylinder, D, sequentially feeding gas into the cured gas cylinder until the pressure Pcn and repeating the steps B and C, wherein after the primary winding and curing process, the corresponding gas cylinder Pcn is Pcn and after the secondary winding and curing process, the corresponding gas cylinder Pcn is Pcn and the rest can be done in the same manner, and E, repeating the step D until n gasing processes and n winding and curing processes on the gas cylinder are finished. Compared with the existing winding technology, the winding and curing method prevents instability phenomenon of the thin-wall metal lining in winding and curing. Through the winding and curing method, a composite material gas cylinder having a high volume characteristic coefficient is obtained.
Description
technical field [0001] The invention relates to a thin-walled metal-lined composite material gas cylinder, in particular to a winding and curing method for a thin-walled metal-lined fiber fully wound lightweight high-pressure gas cylinder. Background technique [0002] High-pressure gas cylinders are widely used in space, such as various gas cylinders for space propulsion systems, pressure vessels for space station environmental control and life support systems, etc. The mass of the composite gas cylinder is only about 40% of the titanium alloy, and it has a leak-before-break (LBB) fatigue failure mode, which can increase the payload ratio and reduce the launch cost. At present, traditional titanium alloy high-pressure gas cylinders for foreign satellites, launch vehicles and missiles and other aerospace systems have been gradually replaced by composite material wound high-pressure gas cylinders. Compared with traditional all-metal gas cylinders, composite gas cylinders hav...
Claims
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IPC IPC(8): F17C1/06
Inventor 王晓蕾童喆益沈俊田桂晏飞冯雪田杰
Owner SHANGHAI COMPOSITES SCI & TECH CO LTD