Novel high-pressure composite gas cylinder

Abstract

The invention discloses a novel high-pressure composite gas cylinder. The novel high-pressure composite gas cylinder comprises an inner liner, a bottle mouth, an inner lining, top tape, a sealing ring, a bottom flange, bottom tape and a winding layer, a sealing structure is arranged at one end of the inner liner and matched with the bottle mouth to realize the fixation to the inner liner, the inner lining is arranged at one end of the inner liner, the joint between the inner liner and the inner lining is wrapped and fixed by the top tape, the sealing ring is fixed to the sealing structure, thebottom flange is arranged at the bottom end of the inner liner, the joint between the bottom flange and the inner liner is wrapped and fixed by the bottom tape, and the winding layer is arranged on the outer wall of the inner liner and fixed to the inner liner by winding. According to the novel high-pressure composite gas cylinder, the sealing structure is designed, the sealing performance is high, the structural strength is high, the structural performance of a bottle body is high, and the weight of the gas cylinder is light.

Description

technical field [0001] The invention relates to the field of high-pressure composite gas cylinders, in particular to a novel high-pressure composite gas cylinder. Background technique [0002] Gas cylinders are disposable or refillable mobile pressure containers used to store and transport permanent gases, liquefied gases and dissolved gases. There are seamless gas cylinders and welded gas cylinders in terms of structure, and steel in terms of material. Gas cylinders, aluminum alloy cylinders, composite gas cylinders and other material cylinders are classified into permanent gas cylinders, liquefied gas cylinders and dissolved acetylene cylinders from the filling medium; the inner liner of the high-pressure container is made of plastic material. These products have superior properties such as corrosion resistance, fatigue resistance, and light weight, and meet the requirements of lightweight. [0003] In the structure of existing high-pressure composite gas cylinders, there...

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Problems solved by technology

[0003] In the structure of existing high-pressure composite gas cylinders, there are the following technical defects: (1) the bottle body structure adopts plastic material, and when it is connected with the sealing structure of metal material at the bottle mouth, the tightness of the two fittings is relatively small. Low, when the gas cylinder is in a long-term process, the sealing structure at the bottle mouth is easily loosened due to vibration, bumping and other factors, which affects the service life of the gas cylinder

(2) The manufacturing technology of the liner in the prior art is that the head of the liner is injection-molded, and then welded with the bottle body, and the production efficiency of this production process is relatively low

(3) After the processing of the liner is completed, the subsequent winding process is required. The mouth of the bottle is made of metal. Due to its own processing characteristics, the metal cannot achieve a close fit transition with the liner, which may cause the subsequent winding to be loose and have cavities. , or cause damage to the carbon fiber itself such as cutting

(3) The winding layer of the bottle body is usually made of carbon fiber material. When winding a large-volume gas cylinder, due to the length and weight of the gas cylinder, it is necessary to fix both ends of the gas cylinder to prevent the gas cylinder from shaking during winding. There is no structure in the prior art that can clamp and fix the bottom of the bottle

(4) The overall bottle body weight of existing gas cylinder structure is heavier

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