Fiber reinforcement composite pressure vessel structure

Abstract

The invention belongs to the technical field of pressure vessels, in particular to a fiber reinforcement composite pressure vessel structure. The fiber reinforcement composite pressure vessel structure comprises a composite binding layer and a macromolecule plastic liner, wherein a macromolecule plastic bottle opening sealing insert is arranged at the opening end of the macromolecule plastic liner; and a metal bottle opening insert flange is arranged on the outer side of the composite binding layer, the macromolecule plastic liner and the macromolecule plastic bottle opening sealing insert. According to the fiber reinforcement composite pressure vessel structure disclosed by the invention, the metal bottle opening insert flange and a metal bottle opening insert are arranged at the bottle opening; the macromolecule plastic bottle opening sealing insert is arranged between the metal bottle opening insert flange and the lower part of the metal bottle opening insert; the metal bottle opening insert flange is connected with the metal bottle opening insert through threads; under high pressure state, the metal bottle opening insert flange can provide better sealing capacity; and under lowtemperature state, the macromolecule plastic bottle opening sealing insert extends and contracts in the axial and radial direction, and the airtightness between the macromolecule plastic bottle opening sealing insert and the metal bottle opening insert is further improved through a sealing ring.

Description

technical field [0001] The invention belongs to the technical field of pressure vessels, and in particular relates to a fiber-reinforced composite material pressure vessel structure. Background technique [0002] In the pressure vessel made of composite materials, the metal liner is replaced by the polymer material liner, which reduces the weight of the liner and the bottle body and improves the fatigue resistance of the bottle body. Regarding the composite material pressure vessel with a polymer liner, the following patents are available in China: (1) 03210592.4 "Lightweight Composite Pressure Vessel"; (2) 00137586.5 "Fiber Wound Composite Rubber Lined Ring Pressure Vessel"; (3) ) 01807147.3 "Fiber-reinforced pressure vessel and its manufacturing method"; (4) 97103911.9 "Composite compressed natural gas cylinder for vehicles and its manufacturing method". Among these patents, only 97103911.9 proposes how to connect the polymer material liner and the metal flange joint: the...

AI Technical Summary

Problems solved by technology

These two methods do not fundamentally solve the effective sealing of the interface between the inner tank and the metal flange to gas or liquid

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