Portable device for detecting flaws of straight pipe and bent pipe of high pressure manifold

Abstract

The invention provides a portable device for detecting flaws of a straight pipe and a bent pipe of high pressure manifold. The portable device comprises a first detection semi-ring, the side wall of the first detection semi-ring is uniformly provided with multiple first radial through-holes along the circumferential direction, a first pushing mechanism having the elastic expansion function is arranged at the first radial through-holes, the inner end of the first pushing mechanism stretches out of the inner side of the first detection semi-ring and then is connected to a first sensor box, and a first metal magnetic memory detection sensor is arranged on the first sensor box; the portable device also comprises a second detection semi-ring, the side wall of the second detection semi-ring is uniformly provided with multiple second radial through-holes along the circumferential direction, a second pushing mechanism having the elastic expansion function is arranged at the second radial through-holes, the inner end of the second pushing mechanism stretches out of the inner side of the second detection semi-ring and then is connected to a second sensor box, and a second metal magnetic memory detection sensor is arranged on the second sensor box; and first ends of the first detection semi-ring and the second detection semi-ring are oppositely hinged by a hinge mechanism and second ends of the first detection semi-ring and the second detection semi-ring are separably connected by a self-locking mechanism so that a ring structure is formed.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation, in particular, relates to a non-destructive detection device, in particular to a portable high-pressure pipe collection straight bend damage detection device based on the metal magnetic memory effect, which is used for detecting Damage detection of worn surface high-pressure manifolds (including straight pipes and elbows). Background technique [0002] In the process of high-pressure oil and gas drilling and production, the high-pressure manifold is an essential high-pressure equipment on the ground. Usually, its working environment is harsh. The erosion of phase particles, fluid corrosion and complex alternating stress. With the increase of the service cycle, the high-pressure manifold is prone to thickness reduction, stress corrosion and fatigue fracture, and the safety and reliability are greatly lower, and this phenomenon is more obvious in the elbow and variable diameter areas. Theref...

AI Technical Summary

Problems solved by technology

However, in terms of existing detection devices, detection devices for straight pipes are more common at present, whether manual or automatic, multi-channel or single-channel, each has its own characteristics, while detection devices for curved pipes are relatively few. This is due to the complex size and structure of the elbow, which puts forward higher requirements for the design of the detection structure.

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