Riser pipe quick coupling

Abstract

The invention relates to a riser pipe quick coupling which is characterized by comprising: a male coupling and a female coupling, which are matched with each other in a splicing way, wherein the periphery of the male coupling is sequentially provided with an O-shaped sealing ring and a coupling clamp spring from top to bottom, the coupling clamp spring is in a ring shape, and a certain angle is respectively formed between the two end surfaces of the coupling clamp spring and a horizontal surface; and the female coupling is provided with a sealing surface at a position corresponding to the O-shaped sealing ring of the male coupling, the inner axial surface of the female coupling is provided with a clamp spring groove which is matched with the coupling clamp spring of the male coupling in shape, and the outer side of the clamp spring groove is rotationally connected with an unloosened bolt in a radial direction. The invention can fast and accurately carry out the connection work of a riser pipe and has simple operation and time saving; the invention also designs an optimal end surface angle of the clamp spring, thereby ensuring the bending strength and the tensile strength of the riser pipe quick coupling higher than the strength of a riser pipe body; and the invention not only has longer service life, but also reduces offshore operation accidents, and also provides the technicalsupport for reducing the development cost of oil fields and efficiently developing oil-gas fields.

Description

technical field [0001] The invention relates to a quick connector, in particular to a quick connector for a riser used in offshore drilling. Background technique [0002] In the process of offshore drilling, the riser is an essential and important drilling equipment. A single riser is often connected with a conventional threaded joint or a conventional quick connector to form an integral structure for drilling operations. However, due to the long working time and troublesome construction of conventional threaded joints connected to a single riser, such joints have been seldom used at present. Conventional quick joints solve the shortcomings of conventional threaded joints, but there are still shortcomings such as insufficient strength and unreasonable structural design, mainly in the insufficient effective connection length and unreasonable angle of the end face of the circlip. Therefore, in the actual production process, it often happens that the joint of the riser is dama...

AI Technical Summary

Problems solved by technology

However, due to the long working time and troublesome construction of conventional threaded joints connected to a single riser, such joints are seldom used at present.

Conventional quick joints solve the shortcomings of conventional threaded joints, but there are still shortcomings such as insufficient strength and unreasonable structural design, mainly in the insufficient effective connection length and unreasonable angle of the end face of the circlip

Therefore, in the actual production process, it often happens that the joint of the riser is damaged before the main body, resulting in huge losses and operational accidents

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