A spool spin passive control type solid-containing multiphase flow control valve

Abstract

The invention relates to the field of valves, in particular to a valve core spinning passive prevention and control type solid-containing multiphase flow control valve which can be applied to a solid-containing multiphase flow medium working condition. The invention includes a valve body, a valve core and a valve seat, and a flow channel groove is set on the valve core; the valve core is rotatably fitted on the valve seat, and each flow channel groove is arranged around the valve core axially to form a spiral groove structure together. Therefore, when the solid-containing multiphase flow medium travels along the flow channel groove, the valve core can be pushed to perform a rotating action relative to the axis of the valve seat. The invention has extremely high operational flexibility and can delay the abrasion damage rate of the solid-containing multiphase flow medium to the valve trim, thereby effectively reducing or even preventing the occurrence of excessive solids in the valve under the premise of ensuring the high service life of the valve trim. The deposition and blockage of the phase flow medium can significantly improve the working reliability.

Description

technical field [0001] The invention relates to the field of valves, in particular to a valve core spin-type passive prevention and control type solid-containing multiphase flow control valve which can be applied to the working condition of a solid-containing multiphase flow medium. Background technique [0002] With the intensification of crude oil heavier and inferior quality, the increasing market demand for light oil products and the increasingly strict environmental regulations, the efficient conversion and clean utilization of coal and heavy / residual oil has become the focus of the world oil refining industry. The solutions are: direct coal liquefaction, kerosene mixing, low-quality heavy / residue hydrocracking and many other chemical processes. These processes involve the flow control of a large number of solid-containing multiphase flow media. Especially the control valve of the thermal high-pressure separator is an indispensable key equipment in the process device. ...

AI Technical Summary

Problems solved by technology

Its structure is complex, and it can only be used in working conditions with low solid content. When the solid content is large, it is easy to be blocked, and the problem of local abrasion cannot be solved.

[0005] In view of the problem of short service life caused by serious damage to the valve trim during the use of this type of valve, especially if the medium has a high solid content and high viscosity, it is more likely to occur under the condition of a small opening. The sedimentation and clogging of phase flow medium, the research and improvement of the material and structure of the valve, and the improvement and prolongation of the effective service life of the valve are the focus of attention and research by technicians in the industry

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