CN-122009833-A - Tricycloxaprid suspending agent raw material negative pressure conveying and batching system

Abstract

The invention discloses a tricyclazole azoxystrobin suspending agent raw material negative pressure conveying and proportioning system which comprises an acquisition module for acquiring operation data of a conveying pipeline in real time, a deviation value calculation module for calculating a difference value between a sliding stream flow speed and a suspension stream flow speed to obtain a speed deviation value, a disturbance result generation module for carrying out transient disturbance analysis on the speed deviation value and first type operation data to obtain a transient disturbance result, a comparison result generation module for calculating a particle distribution ratio and comparing the particle distribution ratio with a preset optimal value to obtain a comparison result, an operation interval determination module for determining an operation interval according to the operation data and the comparison result, and a regulation and control module for regulating an airflow parameter and a particle feeding speed according to the transient disturbance result and the operation interval. The system not only realizes the accurate perception of disturbance in the conveying process and the clear definition of working conditions, but also can be matched with a differential regulation and control strategy according to different states, thereby improving the efficiency and the stability of the negative pressure conveying and batching operation process of the raw materials of the tricyclazole azoxystrobin suspending agent.

Inventors

• ZHANG XINJIAN
• XU YIBIN

Assignees

• 扬州市苏灵农药化工有限公司

Dates

Publication Date

20260512

Application Date

20260324

Claims (7)

1. 1. A tricyclazole azoxystrobin suspending agent raw material negative pressure delivery batching system, characterized in that the system comprises: The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring operation data of a target raw material conveying pipeline in real time, the operation data comprise first type operation data and second type operation data, the first type operation data comprise pipeline pressure drop and cross-sectional area of a moving bed layer at the bottom of the pipeline, the second type operation data comprise sliding flow velocity, suspension flow velocity, particle mass flow and conveying medium mass flow, and the target raw material is any one of a tricyclazole powder raw material and an azoxystrobin powder raw material; The deviation value calculation module is used for calculating the difference value between the sliding flow velocity and the suspension flow velocity to obtain a velocity deviation value; the disturbance result generation module is used for carrying out transient disturbance analysis on the speed deviation value and the first type of operation data to obtain a transient disturbance result; The comparison result generation module is used for calculating a particle distribution ratio according to the cross-sectional area of the moving bed layer at the bottom of the pipe and comparing the particle distribution ratio with a preset optimal particle distribution ratio to obtain a comparison result; the operation interval determining module is used for determining an operation interval of negative pressure conveying ingredients according to the operation data and the comparison result; and the regulation and control module is used for regulating and controlling the airflow parameters and the particle feeding speed of the negative pressure conveying and proportioning system according to the transient disturbance result and the operation interval.
2. 2. The negative pressure delivery and dosing system for a tricyclazole azoxystrobin suspending agent raw material according to claim 1, wherein the disturbance result generation module comprises: the first calculation module is used for calculating the instantaneous correlation between the speed deviation value and the pipeline pressure drop to obtain a first correlation; The second calculation module is used for calculating the instantaneous association degree of the speed deviation value and the cross section area of the moving bed layer at the bottom of the pipe to obtain a second association degree; the first comparison module is used for comparing the first association degree with a preset association degree threshold value to obtain a first association deviation degree; The second comparison module is used for comparing the second association degree with a preset association degree threshold value to obtain a second association deviation degree; A third calculation module for calculating a deviation phase difference and a deviation rate ratio of the first association deviation degree and the second association deviation degree; and the result generation module is used for judging that transient disturbance exists when the first association deviation degree and the second association deviation degree exceed a preset deviation threshold value, the deviation phase difference is smaller than a preset homodromous threshold value and the deviation rate ratio exceeds a preset rate ratio threshold value.
3. 3. The negative pressure delivery and dosing system for a tricyclazole azoxystrobin suspending agent raw material according to claim 1, wherein said operation interval determining module comprises: A fourth calculation module for passing The standard pipeline pressure drop is calculated, wherein, For the pressure drop across the conduit, In order to achieve a particle density of the particles, In order to deliver the density of the medium, For the void ratio of the sliding stream, G is the gravity acceleration for the length of the pipeline section, Is the coefficient of sliding friction; a fifth calculation module for passing Calculating a gas-solid driving value, wherein, In order to deliver a mass flow of the medium, Is the total cross-sectional area of the pipeline, Is low speed at the bottom of the pipeline cross-sectional area of the moving bed layer, Is the diameter of the individual particles; the sixth calculation module is used for calculating a gas-solid phase-to-phase motion coefficient according to the sliding flow velocity and the suspension flow velocity; a seventh calculation module for calculating a gas-solid mass load factor from the particle mass flow and the transport medium mass flow; the integration module is used for integrating the standard pipeline pressure drop, the gas-solid driving value, the gas-solid phase-contrast motion coefficient and the gas-solid mass load coefficient to obtain quantized data; and the interval determining module is used for inputting the quantized data and the comparison result into a preset operation interval mapping model to obtain an operation interval.
4. 4. The negative pressure delivery and dosing system for raw materials of a tricyclazole azoxystrobin suspending agent according to claim 3, wherein the construction process of the preset operation interval mapping model comprises the following steps: Constructing an initial theoretical model comprising a three-layer structure of a suspension layer, a sliding strand flow layer and a static layer based on the relation of momentum balance, mass balance and force balance of gas-solid two-phase flow; Correcting an interlayer momentum coupling relation in the initial theoretical model based on a vertical lift force mechanism between a coupling suspension layer and a sliding strand flow layer to obtain a corrected theoretical model; correcting the energy attenuation process of the corrected theoretical model based on the particle surface pressure drop resistance caused by gas viscosity to obtain a coupling model; Determining the corresponding relation between the pressure drop of the standard pipeline and the gas-solid driving value according to the force balance relation and the momentum exchange mechanism in the coupling model and by combining the gravity field similarity principle; the method comprises the steps of obtaining historical quantized data, wherein the historical quantized data comprise standard pipeline pressure drop, gas-solid drive values, gas-solid phase-contrast motion coefficients and gas-solid mass load coefficients; constructing an operation interval mapping chart by taking the standard pipeline pressure drop as an abscissa and the gas-solid driving value as an ordinate according to the corresponding relation; and dividing the operation interval by analyzing the characteristic boundary based on the corresponding relation in the operation interval mapping diagram, and constructing the mapping relation between the interval and the curve characteristic to obtain an operation interval mapping model.
5. 5. The negative pressure delivery and dosing system for a tricyclazole azoxystrobin suspending agent raw material according to claim 4, wherein the vertical lift mechanism modifies the interlayer momentum coupling relationship in the initial theoretical model by the following formula: Wherein, the method comprises the steps of, Is the lifting force in the vertical direction, As a coefficient of resistance (f) of the material, For the void ratio of the slip strand layer, In order to deliver the density of the medium, For the flow rate of the suspension flow, In order to slide the flow rate of the stream, For the thickness of the layer of the strand, The vertical lifting force acts on the upper surface of the sliding strand flow layer, and the direction is vertical to the flow direction and upwards, so that the effective friction resistance between the particle layer and the pipe wall is reduced.
6. 6. The negative pressure delivery and dosing system for a tricyclazole azoxystrobin suspending agent raw material according to claim 4, wherein the steps of dividing the operation interval by characteristic boundary analysis based on the correspondence in the operation interval map, and constructing the mapping relationship between the interval and the curve characteristic to obtain the operation interval mapping model include: Analyzing the geometric characteristics of the curve of the pressure drop of the standard pipeline along with the change of the gas-solid driving value by combining the change trend of the gas-solid phase-to-gas motion coefficient and the gas-solid mass load coefficient based on the corresponding relation in the operation interval map, and extracting extreme points, inflection points and multi-value solution boundary points of the curve under different gas-solid mass load coefficients; Defining the track of the extreme point in the operation interval mapping diagram as a first boundary curve, defining the track of the inflection point in the operation interval mapping diagram as a second boundary curve, defining the track of the multi-value solution boundary point in the operation interval mapping diagram as a third boundary curve, and finally obtaining a boundary curve set; separating the operation interval mapping graph according to the boundary curve set to obtain a characteristic operation interval set; and establishing a mapping relation according to the corresponding relation between the position of each characteristic operation interval in the characteristic operation interval set in the operation interval mapping graph and the boundary curve set to obtain an operation interval mapping model.
7. 7. The negative pressure delivery and dosing system for a tricyclazole azoxystrobin suspending agent raw material according to claim 1, wherein the regulating and controlling module comprises: The first condition module is used for maintaining the current airflow parameters and the particle feeding speed if the transient disturbance result is that the transient disturbance does not exist and the operation interval is a stable dilute phase region; The second condition module is used for adjusting the particle feeding speed according to a preset optimal particle distribution ratio if the transient disturbance result is that the transient disturbance does not exist and the operation interval is a stable flow area; the third condition module is used for adjusting the airflow parameters according to the difference value between the particle distribution ratio and a preset optimal particle distribution ratio if the transient disturbance result is that the transient disturbance does not exist and the operation interval is an unstable flow region; The fourth condition module is used for adjusting the air flow parameters according to disturbance characteristics if the transient disturbance result is that transient disturbance exists and the operation interval is a stable dilute phase area or a stable flow area; And a fifth condition module, configured to simultaneously reduce the particle feeding speed and adjust the airflow parameters if the transient disturbance result is that there is a transient disturbance and the operation interval is an unstable flow region.

Description

Tricycloxaprid suspending agent raw material negative pressure conveying and batching system Technical Field The invention belongs to the technical field of material conveying, and particularly relates to a negative pressure conveying and batching system for raw materials of a tricyclazole azoxystrobin suspending agent. Background Along with the continuous promotion of industrial automation, green production and intelligent manufacturing, a negative pressure conveying and proportioning system in the prior art is continuously developed towards the direction of airtight dust-free, efficient and energy-saving, intelligent and controllable and modularized integration, a material conveying and accurate proportioning integrated scheme taking vacuum negative pressure as power, an airtight pipeline as a carrier and intelligent control as a core is gradually formed, the requirements of clean conveying of multiple industries such as food, pharmacy, chemical industry, new energy and the like are widely adapted, and the conveying stability, proportioning precision and operation safety are continuously improved through the technical upgrades such as monitoring of the Internet of things, frequency conversion and energy conservation, parameter self-adaptive adjustment and the like Patent application CN118306791A discloses a lithium battery powder conveying monitoring method based on a water-sensitive material negative pressure dilute phase pneumatic conveying system. The method comprises the steps of obtaining a dilute phase pneumatic conveying state parameter, conducting closed-tube conveying conversion treatment on the dilute phase pneumatic conveying state parameter and a preset conveying state parameter to obtain a dilute phase pneumatic closed-tube conveying difference component, and sending a pumping start-stop signal to a negative pressure pumping controller according to the dilute phase pneumatic closed-tube conveying difference component. After the dilute phase pneumatic conveying state parameters are acquired, the current conveying condition of the negative pressure Roots vacuum pump is determined, then the dilute phase pneumatic conveying state parameters are compared with the standard conveying state parameters, the difference between the current conveying state and the standard conveying state of the negative pressure Roots vacuum pump is conveniently determined, and finally the working mode of the negative pressure Roots vacuum pump controlled by the negative pressure pumping controller is adjusted according to the difference value. The preparation process of the tricyclazole azoxystrobin suspending agent comprises the steps of completing powder feeding through negative pressure dust-free conveying, feeding liquid assistants such as water, dispersing agents and the like into a batching kettle, accurately sucking the tricyclazole azoxystrobin powder material through a negative pressure pipeline, performing high-speed shearing and pre-dispersing to form uniform slurry, feeding the uniform slurry into a sand mill, performing wet grinding to reach a target particle size, adding assistants such as thickening, antifreezing, defoaming and the like, performing size mixing and homogenizing, filtering and filling after detection is qualified, and preparing a stable and uniform suspending agent product. However, in the negative pressure conveying process in the prior art, the powder material is influenced by transient disturbance of flow parameters such as fluctuation of a gas source, uneven feeding, change of a pipeline structure and the like, the flow field distribution of the powder material in the pipeline is easy to generate abnormal working conditions of local flow velocity suddenly drop and material concentration suddenly increase, the conveying efficiency of the powder material is low, and the continuity and stability of the whole suspending agent preparation process are finally and directly influenced. Disclosure of Invention The invention aims to solve the problems of low conveying efficiency caused by insufficient stability and high material deposition risk of a pneumatic conveying process under transient disturbance of flow parameters in a negative pressure conveying process, thereby providing a tricyclazole azoxystrobin suspending agent raw material negative pressure conveying and batching system. The invention provides a tricyclazole and azoxystrobin suspending agent raw material negative pressure conveying and proportioning system, which comprises an acquisition module, a pipeline pressure drop and a pipeline bottom moving bed layer cross section area, wherein the acquisition module is used for acquiring operation data of a target raw material conveying pipeline in real time, the operation data comprise first type operation data and second type operation data, the first type operation data comprise sliding stream flow rate, suspension stream flow rate, particle mass flow rate and conveying medium mass fl