Multi-metal framework reinforced polyethylene seabed conveying continuous composite pipe

Abstract

The invention discloses a multi-metal framework reinforced polyethylene seabed conveying continuous composite pipe, and belongs to the field of composite pipes. The multi-metal framework reinforced polyethylene seabed conveying continuous composite pipe comprises an overflowing layer, a first fusion layer is arranged on the outer surface of the overflowing layer, a first steel belt framework layer is arranged on the outer surface of the first fusion layer, a second fusion layer is arranged on the outer surface of the first steel belt framework layer, and a steel wire reinforcing layer is arranged on the outer surface of the second fusion layer. Through mutual cooperation of the overflowing layer, the first fusion layer, the first steel belt framework layer, the second fusion layer, the steel wire reinforcing layer, a third fusion layer, a steel cord tensile layer, a macromolecule protection layer and a second steel belt framework layer, the advantage of multiple functions is achieved, and the problems that an existing metal framework reinforced polyethylene seabed conveying continuous composite pipe is large in diameter, and the function is single are solved, corrosion resistance and negative pressure resistance are high, chloride ions contained in seawater are high-corrosion media, later-period use performance of the composite pipe cannot be affected, and meanwhile bending resistance and tensile strength are good.

Description

technical field [0001] The invention belongs to the technical field of composite pipes, and in particular relates to multi-metal framework reinforced polyethylene continuous composite pipes for seabed transportation. Background technique [0002] Corrosion disasters of fluid transportation pipelines in the onshore and offshore oil and gas field industries are very common, which not only affects the development of the industry and reduces the overall benefits, but also the damage of pipeline corrosion failure accidents to personal safety and the environment is even greater. Alloy steel pipes and non-metallic composite pipe products are generally used in the transportation operations of the country. Each product has its limitations. The environment is harsher than that of land transportation, and the requirements for transportation pipes are more stringent. Therefore, special pipes for the oil industry with high performance and high resistance have become an urgent need in the...

AI Technical Summary

Problems solved by technology

[0002] Corrosion disasters of fluid transportation pipelines in the onshore and offshore oil and gas field industries are very common, which not only affects the development of the industry and reduces the overall benefits, but also the damage of pipeline corrosion failure accidents to personal safety and the environment is even greater. Alloy steel pipes and non-metallic composite pipe products are generally used in the transportation operations of the country. Each product has its limitations. The environment is harsher than that of land transportation, and the requirements for transportation pipes are more stringent. Therefore, high-performance and high-resistance special pipes for the oil industry have become an urgent need in the market.

[0003] At present, the existing multi-metal skeleton reinforced polyethylene continuous composite pipe for subsea transportation has a single function, poor corrosion resistance and negative pressure resistance, and the chloride ion contained in seawater is a strong corrosive medium, which will affect the later use performance of the composite pipe. The bending capacity and tensile capacity are poor, and the external mechanical tension and the strong tension generated by the seawater surge during the laying and use of the composite pipe will damage or break it, shortening the service life of the continuous composite pipe for submarine transportation

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