Combined type buckle arrestor for submarine fiber-reinforced composite flexible pipe

Abstract

The invention discloses a combined type buckle arrestor for a fiber-reinforced composite flexible pipe. The combined type buckle arrestor comprises a metal outer lantern ring and a fiber-reinforced inner lantern ring; the metal outer lantern ring comprises a main lantern ring body, a locking lantern ring body and an elastic seal gasket; the fiber-reinforced inner lantern ring comprises a fiber-reinforced layer and a base body protection layer; the fiber-reinforced inner lantern ring is located on the outer side of the composite pipe and bonded with the composite pipe in a hot-melting mode, thus, the pipe is locally thickened so as to achieving promoting of buckling resistant capacity; and the metal outer lantern ring wraps the fiber-reinforced inner lantern ring in an interference fit modeso that the fiber-reinforced inner lantern ring can be assisted in achieving of buckling arresting, and meanwhile, the composite pipe can be prevented from being bent excessively by means of the gooddeformation resistant performance of the metal outer lantern ring, so that stress concentration of the fiber-reinforced inner lantern ring is reduced. The bonding characteristic of materials of the composite pipe is reasonably utilized to achieve machining of the fiber-reinforced inner lantern ring, and the fiber-reinforced inner lantern ring is assisted by the metal outer lantern ring so as to improve the local structural strength; and the combined type buckle arrestor has the advantages of both a steel pipe welding type buckle arrestor and a steel pipe buckling-pressing type buckle arrestorand has wide popularization value and practical value.

Description

technical field [0001] The invention relates to the technical field of marine fiber-reinforced composite flexible pipe auxiliary components, in particular to a combined buckle arrester for deep-sea high-pressure fiber-reinforced composite flexible pipe used in oil or water transportation. Background technique [0002] The offshore oil and gas industry is facing deeper waters, harsher transportation environments, more complex installation conditions and wider application fields. The material properties of traditional marine steel pipes are increasingly insufficient, including their corrosion resistance, weight, flexibility, etc. Performance hinders its further application and development. In order to overcome these defects, a variety of new marine pipelines using plastic materials have emerged, and the most widely used is thermoplastic fiber reinforced bonded composite pipe (RTP) made of thermoplastic material coated plastic fiber tape winding, RTP pipe in the production proc...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a submarine fiber-reinforced composite pipe in view of the fact that there is no buckle arrester suitable for composite pipes in the prior art. Combined buckle arrester for flexible pipe, while improving the buckle arrester efficiency, it will not cause damage and other failures to the composite pipe body

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