Low-viscosity liquid ring thickened oil conveying and stabilizing device

Abstract

The invention discloses a low-viscosity liquid ring thickened oil conveying and stabilizing device. The device comprises a pipe body, a conveying pump, a liquid storage tank and a connecting pipe; theinner wall of the pipe body is provided with spiral grooves, and the spiral grooves spirally extend to the tail end in the pipe body from the initial end in the pipe body in the axial direction; an inlet of the conveying pump is connected with the liquid storage tank, and liquid with low viscosity is contained in the liquid storage tank; one end of the connecting pipe is connected with an outletof the conveying pump, and the other end of the connecting pipe penetrates through the pipe body and is connected with the initial ends of the spiral grooves. By means of the low-viscosity liquid ringthickened oil conveying and stabilizing device, thickened oil can be kept to be wrapped with low-viscosity liquid rings in the conveying process all the time and prevented from being in direct contact with the inner wall of the pipe body accordingly, and conveying of the thickened oil is facilitated.

Description

technical field [0001] The invention relates to a heavy oil delivery device, in particular to a low-viscosity ring heavy oil delivery stabilization device. Background technique [0002] Due to the very high viscosity of heavy oil, there will be a lot of friction when it is transported through pipelines, resulting in low oil transportation efficiency and even safety problems. In order to solve the problem of low transportation efficiency of heavy oil, a low-viscosity ring transportation method is generally adopted, specifically: before the heavy oil enters the pipeline, a certain amount of water or other low-viscosity immiscible liquids are mixed, and a viscous ring is formed in the pipeline. The water ring makes the heavy oil contact the water ring after entering the pipeline, instead of directly contacting the inner wall of the pipeline, so as to reduce the friction between the heavy oil and the inner wall of the pipeline and improve the fluidity of heavy oil transportation...

AI Technical Summary

Problems solved by technology

However, there are still the following problems: the water ring is only formed at the connecting nozzle, so that the heavy oil can only be surrounded by the water ring when it first enters the pipeline. After a certain distance of transportation, the water ring is easily destroyed, resulting in thick oil The oil is directly in contact with the inner wall of the pipeline; in addition, since the heavy oil can only be surrounded by the water ring when it first enters the pipeline, after long-distance transportation, due to the density difference between the water ring and the heavy oil, the density of the water is high, and it will settle to the At the bottom of the pipeline, oil-water stratification occurs, which also causes heavy oil to directly contact the inner wall of the pipeline

[0004] In addition, the invention patent application document with the application publication number CN105351750A discloses a "liquid ring maintenance device for liquid ring transportation". , using the difference in centrifugal force between the low-viscosity substance and the substance to be conveyed, the low-viscosity substance is filled between the substance to be conveyed and the inner wall of the drum, thereby forming a low-viscosity ring and restoring the state that the substance to be conveyed is wrapped by the low-viscosity ring; However, the invention patent application documents still have the following problems: 1. The low-viscosity material can be separated and formed into a liquid ring only by the high-speed rotation of the entire high-speed drum, which makes it difficult to make a good sealing connection between the high-speed drum and other ordinary conveying pipes; 2. During the rotation of the high-speed drum, there will be a certain amount of friction with the material being transported, which increases the risk of transportation; 3. Motors and transmission mechanisms are required during the transportation process, resulting in complex structures; The flow is hindered, increasing the transmission resistance of heavy oil

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