L-shaped static mixing device and method capable of enabling spherical pig to automatically pass through

Abstract

The invention relates to an L-shaped static mixing device and method capable of enabling a spherical pig to automatically pass through. The device is composed of an L-shaped conical body mixing module, a spring sleeve module, an upper circular pipe sleeve module and a lower circular pipe sleeve module. When thick oil and thin oil in a pipeline flow through the L-shaped conical body mixing module,due to the blocking effect of a L-shaped mixing rod, fluid in the pipeline generates turbulent flow, meanwhile, due to a zigzag structure of the edge of a spine-shaped rod, the turbulent flow effect is further enhanced, and therefore sufficient mixing of the thick oil and the thin oil is achieved. When the spherical pig passes through, the L-shaped mixing rod is straightened due to the pressure effect, and the spherical pig automatically passes through the L-shaped mixing rod. After the spherical pig passes through, the L-shaped conical body mixing module automatically restores the shape of the L-shaped conical body under the action of the tension of the spring sleeve module, so that the functions of uniformly mixing thick oil and thin oil and automatically passing through the spherical pig are realized.

Description

technical field [0001] The invention belongs to the technical field of laying of crude oil pipeline transportation facilities, and in particular relates to an L-shaped static mixing device and method for automatically passing pigging balls. Background technique [0002] Heavy oil mixed with thin oil transportation technology is an important method for oilfields to reduce drag and increase transportation, and the key technology is how to realize the uniform mixing of heavy oil and thin oil. The mixing method of large tanks and direct blending in pipelines are mainly used in the oil field to realize the mixing of heavy oil and thin oil. Due to the large area occupied by the large tank mixing method, high investment, difficult operation and maintenance, and poor applicability, it is generally not used in new oilfields. With the advancement of process technology, it has become a trend to use the direct blending method in the pipeline to realize the mixing of heavy oil and thin ...

AI Technical Summary

Problems solved by technology

However, during the pigging process, since the static blender is fixed inside the pipeline, the pigging ball cannot pass through smoothly, which limits the applicability of the static blender, especially in the submarine gathering pipeline, how to overcome the pigging ball The problem of not being able to pass through the static blender in the pipeline has always troubled oilfield workers

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