High-pressure composite container

Abstract

The invention discloses a high-pressure composite container. The high-pressure composite container comprises a barrel body, a first sealing head, a first metal end head, a composite reinforcing layerand a bottle opening valve, a bottle opening is formed in the barrel body, the first sealing head is fixedly arranged at the end portion of the barrel body, the first sealing head is provided with a first through hole communicating with the bottle opening, the first metal end head is fixedly connected with the first sealing head, the first metal end head is provided with a second through hole communicating with the first through hole, the composite reinforcing layer is fixedly wound outside the first metal end head, the first sealing head and the barrel body, the bottle opening valve sequentially penetrates through the second through hole and the first through hole and then is in sealing fit with the bottle opening. According to the provided high-pressure composite container, by adopting the form of combining the first sealing head, the first metal end head and the barrel body, the strength and the pressure-bearing capability of the end portion of the high-pressure composite containerare improved, meanwhile, through of cooperation among the first sealing head, the first metal end head and the bottle opening, the sealing stability is improved.

Description

technical field [0001] The invention relates to a composite container, in particular to a high-pressure composite container. Background technique [0002] With the increasingly stringent emission regulations, some vehicles are promoted to use natural gas and petroleum gas as alternative fuels. Among them, the use of hydrogen fuel cell vehicles with working pressures of 35MPa and 70MPa hydrogen storage high-pressure composite containers to achieve zero emissions is one of the future development trends. Traditional metal-lined composite gas cylinders have problems such as poor corrosion resistance, heavy weight, poor high-pressure fatigue, high cost, and low production efficiency. The plastic-lined high-pressure composite container can overcome the above shortcomings, but it is a challenge to ensure the sealing between the metal end, the plastic shell, and the bottle valve, and to improve the production efficiency. [0003] figure 1 It is an existing high-pressure plastic l...

AI Technical Summary

Problems solved by technology

figure 2 for figure 1 The enlarged view of the sealing structure in the middle, such as figure 2 As shown, the metal terminal 1 and the plastic shell 2 are connected through a simple snap-fit, which is easy to loosen and leak after repeated pressure changes, and cannot meet the high pressure of 70MPa.

At the same time, the production efficiency of the above-mentioned rotational molding method is low and the cost is high

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