Automatically obtain the highest drag reduction rate of the surfactant drag reduction pipeline

Abstract

The invention relates to a surfactant drag-reduction pipe capable of obtaining the maximum drag reduction rate automatically. The surfactant drag-reduction pipe comprises a flow pipe and a surfactant injection device. The surfactant injection device comprises an elastic bag, a fixing container and an elastic membrane, wherein the elastic bag is used for containing a surfactant solution; the fixing container is used for fixing the elastic bag; and the elastic membrane is used for transmitting pushing force. According to the surfactant drag-reduction pipe, the amount of the injected surfactant solution is controlled automatically only through change of the internal pressure difference generated inside pipe fluid, and thus the function of automatically obtaining the maximum drag reduction rate is achieved; the whole control process can be completed without external manual operation or high-end precision instruments; the whole drag-reduction pipe is simple in structure, convenient to construct and low in cost, and it is convenient to mount and refit an existing pipe; and by means of the drag-reduction pipe, the maximum drag reduction rate is obtained, the optimum energy-saving effect is achieved, and excessive use of surfactant and unnecessary waste are avoided.

Description

technical field [0001] The invention belongs to the technical field of flow drag reduction in fluid pipeline transportation, relates to a surfactant drag reduction pipeline that automatically obtains the highest drag reduction rate, belongs to the drag reduction and energy saving technology of surfactant additive turbulent flow pipeline, and is especially suitable for surfactants Improvement and control of drag-reducing performance of drag-reducing flow. Background technique [0002] Energy saving and emission reduction is one of the main issues that human society is concerned about at present. With the deepening of research on surfactant additive drag reduction technology in academia, surfactant turbulent flow drag reduction technology has been widely used, in which this method is used to reduce the power consumption of pumps in long-distance pipeline transportation systems for liquids (such as petroleum) Considered to be one of the most promising applications. [0003] C...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to cope with the change of the flow condition (i.e. flow Reynolds number), reduce the amount of surfactant used, avoid unnecessary waste, and obtain the best energy-saving effect, the present invention provides an automatic Obtain the surfactant drag reduction pipeline with the highest drag reduction rate, so as to improve the drag reduction performance of the surfactant drag reduction solution and increase the effective utilization rate of the surfactant

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