CN-121988468-A - Cyclone separator regulation and control method and system

CN121988468ACN 121988468 ACN121988468 ACN 121988468ACN-121988468-A

Abstract

The invention relates to a cyclone separator regulating and controlling method and system, which belongs to the technical field of industrial control, and comprises the steps of injecting tracer microspheres into a main pipeline of the cyclone separator, wherein the tracer microspheres comprise spherical transparent shells and dark kernels, collecting sequence images of the tracer microspheres, identifying kernel phases of the tracer microspheres in each frame of the sequence images, determining turnover times of the tracer microspheres according to the kernel phases, determining average self-rotation angle speed of the tracer microspheres according to the turnover times, positioning coordinates of the tracer microspheres in each frame of the sequence images, associating the tracer microspheres in front and rear adjacent frames, generating motion tracks according to the corresponding coordinates, and adjusting inlet flow parameters of the cyclone separator according to the average self-rotation angle speed and/or the motion tracks. The technical scheme provided by the invention can accurately and efficiently adjust the inlet flow parameters of the cyclone separator, and improve the separation effect.

Inventors

HE FENGQIN
LIU WEIQING
LIU QIBIN

Assignees

上海师范大学

Dates

Publication Date: 20260508
Application Date: 20260115

Claims (10)

1. A method for controlling a cyclone separator, comprising: Injecting trace microspheres into a main pipeline of the cyclone separator, wherein the trace microspheres comprise spherical transparent shells and two deep color cores which are arranged in a central symmetry manner; Collecting sequence images of the tracer microspheres; identifying the inner core phases of the tracer microspheres in each frame of the sequence image based on a state classification network, determining the turnover times of the tracer microspheres according to each inner core phase, and determining the average rotation angular speed of the tracer microspheres according to the turnover times in unit time; Positioning coordinates of the tracer microspheres in each frame of the sequence image based on a deep learning target detection model, associating the tracer microspheres in the front and rear adjacent frames based on a target tracking model, and generating a motion track according to the corresponding coordinates; And adjusting inlet flow parameters of the cyclone separator according to the average self-rotation angle speed and/or the motion trail.
2. The method of claim 1, wherein the acquiring the sequence of images of the tracer microsphere comprises: Triggering and collecting the sequence images of the trace microspheres according to a preset sampling period; or triggering to collect the sequence image of the tracer microsphere when the feeding property of the cyclone separator fluctuates.
3. The method of claim 2, wherein the acquiring the sequential images of the tracer microspheres further comprises: denoising and contrast stretching treatment is carried out on the sequence images so as to highlight the gray level difference between the transparent shell and the dark kernel; and/or extracting the bounding box of the tracer microsphere in each frame of the sequence image.
4. The method according to claim 1, wherein the core phase includes a binuclear overlap phase and a binuclear separation phase, such that one cycle in which the binuclear overlap phase and the binuclear separation phase occur twice, respectively, is one turn of the tracer microsphere.
5. The cyclone separator conditioning method according to claim 1, wherein the generating a motion trajectory from the corresponding coordinates comprises: And generating the motion trail according to the coordinates of the corresponding tracer microspheres in each frame based on the detection frame overlapping degree and motion state estimation, wherein the motion trail comprises a trail line length.
6. The cyclone separator conditioning method according to claim 1, wherein said adjusting inlet flow parameters of the cyclone separator according to the average self-rotational velocity and/or the motion profile comprises: and determining the inlet flow parameters of the cyclone separator according to the mapping relation and the target interval.
7. The method for controlling a cyclone separator according to claim 6, wherein the target interval includes an upper limit value of a rotation angular velocity and a lower limit value of a rotation angular velocity, and wherein determining the inlet flow parameter of the cyclone separator according to the mapping relationship and the target interval includes: When the average rotation angular velocity is smaller than the rotation angular velocity lower limit value, adjusting the inlet flow parameter according to the mapping relation so as to increase the inlet flow of the cyclone separator; When the average rotation angular velocity is greater than the rotation angular velocity upper limit value, adjusting the inlet flow parameter according to the mapping relation so as to reduce the inlet flow of the cyclone separator; And when the average self-rotation angular velocity is between the upper limit value of the self-rotation angular velocity and the lower limit value of the self-rotation angular velocity, maintaining the inlet flow parameter.
8. The method according to claim 6, wherein the target section includes an upper limit value of rotational angular velocity, a lower limit value of rotational angular velocity, an upper limit value of movement locus, and a lower limit value of movement locus, and wherein the determining the inlet flow parameter of the cyclone according to the map and the target section includes: When the average rotation angular velocity is smaller than the rotation angular velocity lower limit value and/or the motion track is smaller than the motion track lower limit value, the inlet flow parameter is adjusted according to the mapping relation so as to increase the inlet flow of the cyclone separator; when the average rotation angular velocity is greater than the rotation angular velocity upper limit value and/or the motion trail is greater than the motion trail lower limit value, adjusting the inlet flow parameter according to the mapping relation so as to reduce the inlet flow of the cyclone separator; And when the average self-rotation angular velocity is positioned between the upper limit value of the rotation angular velocity and the lower limit value of the rotation angular velocity, and the motion track is positioned between the upper limit value of the motion track and the lower limit value of the motion track, the inlet flow parameter is maintained.
9. A cyclone separator conditioning system, comprising: The injection device is used for injecting trace microspheres into the main pipeline of the cyclone separator, wherein the trace microspheres comprise spherical transparent shells and two deep color cores which are arranged in a central symmetry manner; the acquisition device is used for acquiring the sequence images of the trace microspheres; The control device is used for identifying the inner core phases of the tracer microspheres in each frame of the sequence image based on the state classification network, determining the turnover times of the tracer microspheres according to each inner core phase, and determining the average rotation angular speed of the tracer microspheres according to the turnover times; Positioning coordinates of the tracer microspheres in each frame of the sequence image based on a deep learning target detection model, associating the tracer microspheres in the front and rear adjacent frames based on a target tracking model, and generating a motion track according to the corresponding coordinates; And adjusting inlet flow parameters of the cyclone separator according to the average self-rotation angle speed and/or the motion trail.
10. The cyclone separator conditioning system according to claim 9, wherein the control means comprises: the edge computing terminal is used for processing the acquired sequence images of the tracer microspheres and generating the average rotation angular speed and the motion trail of the tracer microspheres; And the core processing terminal is used for adjusting the inlet flow parameters of the cyclone separator according to the average self-rotation angle speed and/or the motion trail.

Description

Cyclone separator regulation and control method and system Technical Field The invention relates to the technical field of industrial control, in particular to a cyclone separator regulation and control method and system. Background The cyclone separator is a key solid-liquid separation device in the fields of petroleum exploitation, sewage treatment, soil remediation and the like. The working principle is to utilize the centrifugal force field generated by the rotation of the fluid to carry out heterogeneous phase separation. The separation efficiency is mainly dependent on the centrifugal force field strength inside the flow field, which is significantly affected by the operating parameters of inlet flow, pressure, overflow diameter, etc. Therefore, the regulation of the cyclone becomes critical to its separation effect. In the related art, the monitoring and automatic control of the working state of the cyclone separator mainly depend on external macroscopic parameters such as inlet and outlet pressure, flow and the like, and mainly adopt open loop control, so that the control precision is insufficient, and the separation effect is affected. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a cyclone separator regulating and controlling method and a cyclone separator regulating and controlling system. In a first aspect, the present invention provides a method for controlling a cyclone separator, the method comprising: Injecting trace microspheres into a main pipeline of the cyclone separator, wherein the trace microspheres comprise spherical transparent shells and two deep color cores which are arranged in a central symmetry manner; Collecting sequence images of the tracer microspheres; identifying the inner core phases of the tracer microspheres in each frame of the sequence image based on a state classification network, determining the turnover times of the tracer microspheres according to each inner core phase, and determining the average rotation angular speed of the tracer microspheres according to the turnover times in unit time; Positioning coordinates of the tracer microspheres in each frame of the sequence image based on a deep learning target detection model, associating the tracer microspheres in the front and rear adjacent frames based on a target tracking model, and generating a motion track according to the corresponding coordinates; And adjusting inlet flow parameters of the cyclone separator according to the average self-rotation angle speed and/or the motion trail. Further, the acquiring the sequence image of the tracer microsphere comprises: Triggering and collecting the sequence images of the trace microspheres according to a preset sampling period; or triggering to collect the sequence image of the tracer microsphere when the feeding property of the cyclone separator fluctuates. Further, the acquiring the sequence image of the tracer microsphere further comprises: denoising and contrast stretching treatment is carried out on the sequence images so as to highlight the gray level difference between the transparent shell and the dark kernel; and/or extracting the bounding box of the tracer microsphere in each frame of the sequence image. Further, the core phase includes a dual-core overlapping phase and a dual-core separating phase, so that a cycle in which the dual-core overlapping phase and the dual-core separating phase occur twice respectively is one turn of the trace microsphere. Further, the generating a motion trail according to the corresponding coordinates includes: And generating the motion trail according to the coordinates of the corresponding tracer microspheres in each frame based on the detection frame overlapping degree and motion state estimation, wherein the motion trail comprises a trail line length. Further, the adjusting the inlet flow parameters of the cyclone separator according to the average self-rotation angular velocity and/or the motion profile comprises: and determining the inlet flow parameters of the cyclone separator according to the mapping relation and the target interval. Further, the target interval comprises an upper limit value of the rotation angular velocity and a lower limit value of the rotation angular velocity, and the determining the inlet flow parameter of the cyclone separator according to the mapping relation and the target interval comprises: When the average rotation angular velocity is smaller than the rotation angular velocity lower limit value, adjusting the inlet flow parameter according to the mapping relation so as to increase the inlet flow of the cyclone separator; When the average rotation angular velocity is greater than the rotation angular velocity upper limit value, adjusting the inlet flow parameter according to the mapping relation so as to reduce the inlet flow of the cyclone separator; And when the average self-rotation angular velocity is between the upper limit value of the self-rota