Anti-blocking control method and system

Abstract

The invention provides an anti-blocking control method and system, and the method comprises the steps: responding to the pressure change rate of a conveying pipeline to trigger a blocking risk, and recognizing a pressure unbalance position of the conveying pipeline; determining at least one air supply node in a downstream area of the pressure imbalance position; according to the physical attributes of the materials, airflow power parameters, used for balancing the pressure of the conveying pipeline, of all the air supply nodes are determined, and air supply is conducted on all the air supply nodes according to all the airflow power parameters. By dynamically capturing the transient fluctuation of the pressure in the conveying pipeline and monitoring the pressure change rate, the blockage risk can be quickly and accurately identified; by identifying the pressure unbalance position of the conveying pipeline, the specific position of blockage can be accurately determined, a clear target is provided for subsequent dredging measures, and blind operation is reduced; the air supply node is determined in the downstream area of the pressure imbalance position, targeted dredging can be conducted on the blocked position, unnecessary influences on the upstream non-blocked area are avoided, and the dredging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic conveying, and in particular, to an anti-blocking control method and system. Background Art

[0002] In a dense-phase pneumatic conveying system, the vertical lifting section is a high-risk area in engineering practice. As the conveying height increases, the material gradually accumulates in the pipeline due to the gravity settlement effect, resulting in a sharp increase in the pressure loss gradient and forming a significant energy dissipation area. When the system operates under high solid-gas ratio conditions (the ratio of the mass flow rate of solid material to the mass flow rate of gas is significantly higher than the conventional conditions), the dynamic balance between the frictional resistance of the material and the kinetic energy carried by the gas is broken, leading to the formation of local blockage agglomeration in the vertical pipeline, inducing transportation interruption and even equipment failure.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solutions of the present application and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art section of the present application. Summary of the Invention

[0004] An object of the present application is to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, a first object of the present application is to propose an anti-blocking control method.

[0006] A second object of the present application is to propose an anti-blocking control system.

[0007] A third object of the present application is to propose an electronic device.

[0008] A fourth object of the present application is to propose a non-transitory computer-readable storage medium.

[0009] A fifth object of the present application is to propose a computer program product.

[0010] To achieve the above object, an embodiment of the first aspect of the present application proposes an anti-blocking control method, including:

[0011] Responding to the pressure change rate of the conveying pipeline to trigger a blockage risk, and identifying the pressure imbalance position of the conveying pipeline;

[0012] Determining at least one air supplement node in the downstream area of the pressure imbalance position, wherein the downstream area is related to the transmission direction of the material in the conveying pipeline;

[0013] According to the physical properties of the material, determine the air flow dynamic parameters of each air supplement node for balancing the pressure of the conveying pipeline, and perform air supplement on each air supplement node according to each air flow dynamic parameter, where the physical properties include particle size and humidity.

[0014] To achieve the above object, an anti-blocking control system is proposed in the second aspect embodiment of the present application, including:

[0015] An identification module, which is used to trigger a blockage risk in response to the pressure change rate of the conveying pipeline and identify the pressure imbalance position of the conveying pipeline;

[0016] An acquisition module, which is used to determine at least one air supplement node in the downstream area of the pressure imbalance position, where the downstream area is related to the transmission direction of the material in the conveying pipeline;

[0017] A control module, which is used to determine the air flow dynamic parameters of each air supplement node for balancing the pressure of the conveying pipeline according to the physical properties of the material, and perform air supplement on each air supplement node according to each air flow dynamic parameter, where the physical properties include particle size and humidity.

[0018] To achieve the above object, an electronic device is proposed in the third aspect embodiment of the present application, including: a processor; a memory for storing executable instructions of the processor; wherein, the processor is configured to execute the instructions to implement the anti-blocking control method proposed in the first aspect embodiment of the present application.

[0019] To achieve the above object, a non-transitory computer-readable storage medium is proposed in the fourth aspect embodiment of the present application. When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the anti-blocking control method proposed in the first aspect embodiment of the present application.

[0020] To achieve the above object, a computer program product is proposed in the fifth aspect embodiment of the present application, including a computer program, and the computer program implements the anti-blocking control method proposed in the first aspect embodiment of the present application when executed by the processor in the communication device.

[0021] In the embodiments of the present application, by dynamically capturing the transient fluctuations of the pressure in the conveying pipeline and monitoring the pressure change rate, the blockage risk can be quickly and accurately identified, avoiding the conveying interruption and production delay caused by blockage; by identifying the pressure imbalance position of the conveying pipeline, the specific position where the blockage occurs can be accurately determined, providing a clear target for subsequent dredging measures and reducing blind operation; by determining the air supplement node in the downstream area of the pressure imbalance position, targeted dredging can be carried out for the blockage position, avoiding unnecessary impacts on the unblocked upstream area and improving the dredging efficiency; by starting to supplement air from the downstream area, the material accumulation and secondary blockage caused by improper air supplement operation can be effectively prevented, ensuring the smooth progress of the dredging process; the air supplement node is determined based on the transmission direction of the material in the conveying pipeline, conforming to the movement law of the material in the conveying pipeline, and can better utilize the air flow power to push the material, thereby reducing the blockage risk; according to the physical properties of the material such as particle size and humidity, a personalized purging plan is formulated to ensure that the air flow power parameters match the material characteristics and improve the purging effect; by adjusting the air flow power parameters, it can better adapt to different material characteristics, improve the purging efficiency, reduce the purging time, and lower the energy consumption; by adjusting the air flow power parameters according to the particle size of the material, the material fragmentation caused by too strong air flow can be avoided, protecting the integrity of the material and improving the product quality.

[0022] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, where:

[0024] Figure 1 is a schematic flowchart of an anti-blocking control method provided by an embodiment of the present application;

[0025] Figure 2 is a schematic flowchart of another anti-blocking control method provided by an embodiment of the present application;

[0026] Figure 3 is a schematic structural diagram of an anti-blocking control system provided by an embodiment of the present application;

[0027] Figure 4 is a schematic diagram of anti-blocking control for a conveying pipeline according to an embodiment of the present application;

[0028] Figure 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

[0029] Figure 6A schematic structural diagram of another electronic device according to an embodiment of the present application. Detailed implementation manners

[0030] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the embodiments of the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0031] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. The singular forms "a" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0032] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the embodiments of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "when" as used herein may be interpreted as "when" or "when" or "in response to a determination".

[0033] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application and should not be construed as a limitation of the present application.

[0034] In a dense-phase pneumatic conveying system, the vertical lifting section is one of the areas with the highest risks in engineering practice. As the conveying height continuously increases (usually exceeding 80 meters), the material is affected by gravity settlement in the pipeline and gradually accumulates. This accumulation causes the pressure loss gradient in the pipeline to increase sharply, and the pressure loss per meter can reach 0.2 - 0.5 kPa, forming a significant energy dissipation area. This energy dissipation not only increases the energy consumption of the system but also reduces the conveying efficiency.

[0035] More seriously, when the dense-phase pneumatic conveying system operates under high solid-gas ratio conditions (the solid-gas ratio exceeds 60), the dynamic balance between the frictional resistance among material particles and the carrying kinetic energy of the gas is broken. In this case, local blockage and agglomeration of material particles are likely to occur in the vertical pipeline, resulting in the interruption of conveying and even equipment failure. Such local blockage not only interrupts the conveying of materials but also may damage the pipeline and equipment, increasing the maintenance cost and downtime.

[0036] Currently, the anti-blocking measures for dense-phase pneumatic conveying systems rely on continuously supplementing air from the bottom of the conveying pipeline with a single high-pressure air source. Usually, the air supplement pressure needs to be increased to more than 3.0 MPa to maintain the continuity of conveying. Such anti-blocking measures make the vertical section of the conveying pipeline face a triple contradiction of "energy consumption - material protection - conveying stability". For example, high-pressure air supplementation will lead to an increase in system energy consumption, resulting in high operating costs; the strong air flow impact is very likely to cause the crushing rate of material particles to exceed 15%, resulting in quality problems such as deterioration of the powder particle size distribution of materials and loss of active ingredients; high-pressure air supplementation is also likely to cause tremors in the conveying pipeline, thus increasing the risk of equipment wear and leakage.

[0037] Therefore, how to achieve a breakthrough in vertical conveying with low energy consumption, low crushing, and high stability is a technical problem that urgently needs to be solved in the current anti-blocking control of dense-phase pneumatic conveying systems.

[0038] The following describes the anti-blocking control method and its system according to the embodiments of the present application with reference to the accompanying drawings.

[0039] Figure 1 It is a schematic flowchart of an anti-blocking control method provided by an embodiment of the present application.

[0040] As Figure 1 shown, the anti-blocking control method includes but is not limited to the following steps:

[0041] S101, in response to the triggering of a blockage risk by the pressure change rate of the conveying pipeline, identify the pressure imbalance position of the conveying pipeline.

[0042] In a feasible implementation manner, in a dense-phase pneumatic conveying system, especially in the vertical lifting section of the conveying pipeline, materials may accumulate due to gravity, resulting in a significant increase in the pressure loss gradient in the conveying pipeline (the pressure loss gradient refers to the pressure loss per unit length of the conveying pipeline), and thus may cause local blockage.

[0043] In a feasible implementation manner, a plurality of high-precision pressure sensors can be arranged at key positions of the conveying pipeline (such as the starting point, middle point, and end point of the vertical lifting section). These pressure sensors can monitor the pressure changes in the conveying pipeline in real time and calculate the pressure change rate. Among them, the expression of the pressure change rate can be:

[0044]

[0045] Wherein, ΔP is the pressure change amount in the conveying pipeline, and Δt is the time change amount.

[0046] It should be noted that the arrangement spacing of the pressure sensors can be optimized according to the length of the transmission pipeline, the physical properties of the material, and the conveying conditions. For example, in areas with a higher risk of blockage (such as the vertical lifting section), the density of the pressure sensors can be increased to improve the accuracy and reliability of the monitoring.

[0047] In a feasible implementation manner, it is possible to determine whether the current pressure change rate of the conveying pipeline triggers a blockage risk according to the mapping relationship between the preset pressure change rate and the blockage level. For example, the blockage risk can be divided into different levels according to the magnitude of the pressure change rate. If the pressure change rate is less than 0.1 kPa / s, the blockage risk level is defined as a low risk; if the pressure change rate is between 0.1 kPa / s and 0.3 kPa / s, the blockage risk level is defined as a medium risk; if the pressure change rate is greater than 0.3 kPa / s, the blockage risk level is defined as a high risk. Map the pressure change rate and the blockage risk level to form a comparison table; according to the current pressure change rate and the comparison table, determine whether the current pressure change rate of the conveying pipeline triggers a blockage risk.

[0048] In a feasible implementation manner, when the blockage risk alarm is triggered, the pressure imbalance position of the conveying pipeline can be identified by comparing the pressure differences between adjacent pressure sensor brackets. For example, if the pressure difference between pressure sensor A and pressure sensor B suddenly increases, while the pressure difference between pressure sensor B and pressure sensor C changes little, it can be preliminarily determined that the pressure imbalance position is between pressure sensor A and pressure sensor B.

[0049] S102, determine at least one air supplement node in the downstream area of the pressure imbalance position, wherein the downstream area is related to the transmission direction of the material in the conveying pipeline.

[0050] In a feasible implementation manner, the downstream area refers to the subsequent cut-off part along the material transmission direction starting from the pressure imbalance position. The selection of this area is based on the transmission direction of the material in the transmission pipeline because air supplementation usually needs to be carried out in the area after the blockage point to help push the accumulated material to continue to be conveyed forward.

[0051] In a feasible implementation, an air replenishment node can be set at an appropriate distance from the pressure imbalance position in the downstream area. The distance between the air replenishment node and the pressure imbalance position should not be too close, otherwise it may not be able to effectively push the accumulated materials; the distance should not be too far either, otherwise a higher air replenishment pressure may be required. Usually, the structures such as elbows and branches of the conveying pipeline need to be considered, and the air replenishment node should avoid these responsible areas as much as possible. Usually, the number and position of the air replenishment nodes need to be adjusted according to the physical properties of the materials, such as particle size and humidity. For example, materials with larger particle size or higher humidity may require air replenishment nodes to be set closer to the pressure imbalance point, and multiple air replenishment nodes should be set according to the generation principle of stepped air flow, and appropriate spacing distances (the spacing distance can be between 10 meters and 30 meters) should be set between these multiple air replenishment nodes.

[0052] S103. Determine the air flow dynamic parameters of each air replenishment node for balancing the pressure of the conveying pipeline according to the physical properties of the materials, and replenish air to each air replenishment node according to each air flow dynamic parameter, where the physical properties include particle size and humidity.

[0053] In a feasible implementation, first analyze the influence of the physical properties of the materials on the air flow dynamic requirements. Materials with larger particle size are more likely to accumulate in the conveying pipeline and require higher air flow velocity and larger air flow rate to push the materials forward. Although materials with smaller particle size have a lower risk of accumulation, they are more likely to be carried away by the air flow, resulting in an increase in air flow resistance. Materials with high humidity are prone to adhesion, increasing the frictional resistance in the conveying pipeline. Materials with low humidity are relatively dry, with a lower risk of accumulation, but also have a smaller air flow resistance.

[0054] In a feasible implementation, the required air replenishment pressure can be calculated according to the particle size and humidity of the materials. For example, for materials with larger particle size and higher humidity, the air replenishment pressure may need to reach 0.5 MPa; while for materials with smaller particle size and lower humidity, the air replenishment pressure can be reduced to 0.3 MPa.

[0055] In a feasible implementation, the air replenishment flow rate can be calculated according to the accumulation situation of the materials and the air flow resistance in the conveying pipeline. For example, for materials with larger particle size and higher humidity, the air replenishment flow rate may need to reach 100 m 3 / h; for materials with smaller particle size and lower humidity, the air replenishment flow rate can be reduced to 50 m 3 / h.

[0056] In a feasible implementation manner, air supplement operations are performed at each air supplement node according to air flow dynamic parameters such as air supplement pressure and air supplement flow rate. And according to the real-time monitored air supplement effect, the air supplement pressure and air supplement flow rate at each air supplement node are dynamically adjusted. For example, after the air supplement operation is executed, the pressure change rate in the conveying pipeline gradually decreases, and the values of the air supplement pressure and air supplement flow rate should be appropriately reduced, so that the pressure in the conveying pipeline reaches a balanced state, avoiding material fragmentation caused by too strong air flow, thereby protecting the integrity of the material.

[0057] In summary, the anti-blocking control method provided by the embodiments of the present application can quickly and accurately identify the blockage risk by dynamically capturing the transient fluctuations of the pressure in the conveying pipeline and monitoring the pressure change rate, avoiding the conveying interruption and production delay caused by blockage; by identifying the pressure imbalance position of the conveying pipeline, the specific position where the blockage occurs can be accurately determined, providing a clear target for subsequent dredging measures and reducing blind operations; determining the air supplement nodes in the downstream area of the pressure imbalance position can dredge the blockage position specifically, avoiding unnecessary impacts on the unblocked upstream areas and improving the dredging efficiency; starting air supplement from the downstream area can effectively prevent material accumulation and secondary blockage caused by improper air supplement operations, ensuring the smooth progress of the dredging process; the air supplement nodes are determined based on the transmission direction of the material in the conveying pipeline, which conforms to the movement law of the material in the conveying pipeline, can better utilize the air flow power to push the material, thereby reducing the blockage risk; formulating a personalized purging plan according to the physical properties of the material such as particle size and humidity to ensure that the air flow dynamic parameters match the material characteristics and improve the purging effect; by adjusting the air flow dynamic parameters, it can better adapt to different material characteristics, improve the purging efficiency, reduce the purging time, and reduce energy consumption; adjusting the air flow dynamic parameters according to the particle size of the material can avoid material fragmentation caused by too strong air flow, protect the integrity of the material, and improve the product quality.

[0058] Figure 2 It is a schematic flowchart of another anti-blocking control method provided by the embodiments of the present application.

[0059] As Figure 2 shown, the anti-blocking control method includes but is not limited to the following steps:

[0060] S201, real-time monitor the pressure change rate in the conveying pipeline, and determine the pressure imbalance position of the conveying pipeline based on the blockage risk.

[0061] In a feasible implementation, the first pressure change rate attribute belonging to normal operation and the second pressure change rate attribute belonging to blockage events can be determined from the historical operation data of the conveying pipeline (the historical operation data includes pressure data during normal operation and blockage events, and the pressure data includes time stamps, pressure values, flow rates, material properties, etc.), where both the first pressure change rate attribute and the second pressure change rate attribute are related to value ranges, frequency distributions, and probability distributions.

[0062] In some embodiments, the pressure data of normal operation is analyzed to calculate its first pressure change rate; and the value range of the first pressure change rate during normal operation is analyzed. For example, the first pressure change rate during normal operation may be between 0.05 kPa and 0.1 kPa per second; then a frequency distribution diagram of the first pressure change rate during normal operation can be plotted, and this operation can identify the common values and distribution patterns of the first pressure change rate; next, the probability distribution of the first pressure change rate during normal operation is determined, and the probability distribution can be obtained through statistical methods such as normal distribution and uniform distribution.

[0063] In some embodiments, the pressure data of blockage events is analyzed to calculate its second pressure change rate; and the value range of the second pressure change rate during blockage events is analyzed. For example, the second pressure change rate during blockage events may be between 0.3 kPa and 0.5 kPa; then a frequency distribution diagram of the second pressure change rate during blockage events can be plotted; next, the probability distribution of the second pressure change rate during blockage events is calculated.

[0064] In some embodiments, according to the first pressure change rate attribute and the second pressure change rate attribute, machine learning methods such as support vector machines and random forests can be used to train a monitoring model, and this monitoring model can identify normal operation and blockage events based on the value range, frequency distribution, and probability distribution of the pressure change rate.

[0065] In a feasible implementation, the monitoring model can find the minimum value from the second pressure change rate data during blockage events, and this minimum value represents the minimum pressure change rate that may be encountered under blockage event conditions. The monitoring model can find the maximum value from the first pressure change rate data during normal operation, and this maximum value represents the maximum pressure change rate that may be encountered under normal operation conditions. Then, a safety threshold is determined between the maximum pressure change rate under normal operation conditions and the minimum pressure change rate under blockage event conditions.

[0066] In a feasible real-time manner, the pressure change rate inside the conveying pipeline is monitored in real time. If the pressure change rate exceeds the preset safety threshold, it is determined that there is a blockage risk in the conveying pipeline, and the pressure imbalance position of the conveying pipeline based on the blockage risk is determined.

[0067] In some embodiments, the pressure imbalance position of the conveying pipeline based on the blockage risk can be determined according to the changing trend of the pressure gradient along the conveying pipeline. Under normal operating conditions, the pressure gradient in the conveying pipeline usually remains within a relatively stable range. For example, it is between 0.1 kPa and 0.2 kPa per meter. When a blockage occurs in the conveying pipeline, the pressure gradient will change significantly. For example, the pressure gradient before the blockage point will increase sharply (such as 0.5 kPa per meter), while the pressure gradient after the blockage point will decrease significantly. Further, if the pressure gradient of a certain section of the conveying pipeline suddenly increases to 0.5 kPa per meter and the pressure gradient of the adjacent section of the conveying pipeline changes little, it can be preliminarily determined that there is a blockage risk in this section of the conveying pipeline, that is, this section of the conveying pipeline is the pressure imbalance position.

[0068] S202, determine at least one air supplement node in the downstream area of the pressure imbalance position, where the downstream area is related to the transmission direction of the material in the conveying pipeline.

[0069] In a feasible implementation manner, the specific range of the downstream area is determined according to the pressure imbalance position and the total length of the conveying pipeline. For example, if the total length of the conveying pipeline is 100 meters and the pressure imbalance position is at the 50th meter, the downstream area can be set from the 60th meter to the 100th meter.

[0070] In a feasible implementation manner, the fuzzy PID algorithm can be used to analyze the historical blockage events within the specific range to determine the number and distribution positions of the air supplement nodes required at the current moment within the specific range, where the historical blockage events are obtained from the historical operation data of the conveying pipeline.

[0071] In some embodiments, the relevant information of the historical blockage events can be extracted from the historical operation data of the conveying pipeline, including the blockage position, blockage time, pressure change rate, the number and distribution positions of the air supplement nodes, etc. Then, the blockage position, blockage time, pressure change rate, the number and distribution positions of the air supplement nodes, etc. are used as the input features of the fuzzy PID algorithm. Then, according to the historical operation data, the rules of the fuzzy PID algorithm are defined, and these rules are used to describe the relationship between the blockage events and the number and distribution positions of the air supplement nodes. For example, if the pressure change rate is high and the blockage position is close to the starting point of the pipeline, more air supplement nodes are required and they are distributed more densely; if the pressure change rate is low and the blockage position is close to the end point of the pipeline, fewer air supplement nodes are required and they are distributed more sparsely.

[0072] Then, according to the rules of the fuzzy PID algorithm, infer the number and distribution positions of the air supplement nodes required within the specific range of the downstream area at the current moment, and determine the specific positions of the air supplement nodes within the downstream area. For example, if the fuzzy PID algorithm calculates that 3 air supplement nodes are required, and the distribution positions are at the 60th meter, 70th meter, and 80th meter respectively, then air supplement operations are performed at the 60th meter, 70th meter, and 80th meter positions.

[0073] S203. Determine the air flow dynamic parameters of each air supplement node for balancing the pressure of the conveying pipeline according to the physical properties of the material, and perform air supplementation on each air supplement node according to the air flow dynamic parameters, where the physical properties include particle size and humidity.

[0074] In a feasible implementation manner, the air flow pressure, air flow rate, air flow velocity, and air flow temperature required for each air supplement node can be determined according to the physical properties of the material, and the air flow pressure, air flow rate, air flow velocity, and air flow temperature are used as the air flow dynamic parameters for balancing the pressure of the conveying pipeline.

[0075] In some embodiments, the required air flow pressure can be calculated according to the physical properties of the material and the air flow resistance within the conveying pipeline. For example, for materials with a relatively large particle size and high humidity, the air flow pressure may need to reach 0.5 MPa; while for materials with a relatively small particle size and low humidity, the air flow pressure can be reduced to 0.3 MPa.

[0076] In some embodiments, the required air flow rate can be calculated according to the physical properties of the material and the air flow resistance within the conveying pipeline. For materials with a relatively large particle size and high humidity, the air flow rate may need to reach 100 m 3 / h; while for materials with a relatively small particle size and low humidity, the air flow rate can be reduced to 50 m 3 / h.

[0077] In some embodiments, the required air flow velocity can be calculated according to the physical properties of the material and the air flow resistance within the conveying pipeline. For example, for materials with a relatively large particle size and high density, the air flow velocity may need to reach 20 m / s; while for materials with a relatively small particle size and low density, the air flow velocity can be reduced to 10 m / s.

[0078] In some embodiments, the required air flow temperature can be calculated according to the physical properties of the material and the air flow resistance within the conveying pipeline. For example, for materials with high humidity, the air flow temperature may need to be increased to 40 °C; while for materials with low humidity, the air flow temperature can be reduced to 20 °C.

[0079] In a feasible implementation manner, according to each air flow dynamic parameter, determine the opening sequence of each air supplement node, the air flow opening time of each air supplement node, the opening interval time between adjacent air supplement nodes, and the peak pressure when each air supplement node performs purging.

[0080] In some embodiments, according to the pressure gradient in the conveying pipeline, starting from the air supplement node with the highest pressure, all air supplement nodes can be opened in sequence according to the order of decreasing pressure. If the material accumulation in a certain section of the conveying pipeline is relatively serious, the air supplement node of this section of the conveying pipeline is preferentially opened to quickly push the material forward and relieve the blockage.

[0081] In some embodiments, the required air flow opening time can be calculated according to the air flow pressure in the conveying pipeline. For example, if the air flow pressure of a certain air supplement node is relatively high, a shorter air flow opening time may be required; if the air flow pressure is relatively low, a longer air flow opening time may be required. The air flow opening time can also be adjusted according to the blockage situation in the conveying pipeline. If the blockage is relatively serious, the air flow opening time may need to be extended to ensure that the material can pass through smoothly.

[0082] In some embodiments, the opening interval time between adjacent air supplement nodes can be calculated according to the air flow pressure, air flow rate, air flow velocity, and air flow temperature. For example, if the air flow pressure difference between adjacent air supplement nodes is 0.1 MPa, the air flow rate difference is 20 m 3 / h, the air flow velocity difference is 5 m / s, and the air flow temperature difference is 10 °C, the opening interval time may be 15 seconds; if the air flow pressure difference between adjacent air supplement nodes is 0.2 MPa, the air flow rate difference is 30 m 3 / h, the air flow velocity difference is 10 m / s, and the air flow temperature difference is 20 °C, the opening interval time may be 20 seconds.

[0083] In some embodiments, the peak pressure when the air supplement node performs purging can be calculated according to the air flow pressure and air flow rate. For example, if the air flow pressure and flow rate of a certain air supplement node are relatively large, the peak pressure during purging may be relatively high. The peak pressure during purging can also be adjusted according to the blockage situation in the conveying pipeline. If the blockage is relatively serious, the peak pressure during purging may need to be increased to ensure that the material can be effectively purged. By adjusting the peak pressure, it is possible to avoid the material being broken due to too strong air flow, thereby protecting the integrity of the material.

[0084] In summary, the anti-blocking control method provided by the embodiments of the present application can quickly and accurately identify the blockage risk by dynamically capturing the transient fluctuations of the pressure in the conveying pipeline and monitoring the pressure change rate, avoiding the conveying interruption and production delay caused by blockage; by identifying the pressure imbalance position of the conveying pipeline, the specific position where the blockage occurs can be accurately determined, providing a clear target for subsequent dredging measures and reducing blind operations; determining the air supplement nodes in the downstream area of the pressure imbalance position can dredge the blockage position specifically, avoiding unnecessary impacts on the unblocked upstream areas and improving the dredging efficiency; starting to supplement air from the downstream area can effectively prevent material accumulation and secondary blockage caused by improper air supplement operations, ensuring the smooth progress of the dredging process; the air supplement nodes are determined based on the transmission direction of the material in the conveying pipeline, conforming to the movement law of the material in the conveying pipeline, and can better utilize the air flow power to push the material, thereby reducing the blockage risk; formulating a personalized purging plan according to the physical properties such as the particle size and humidity of the material to ensure that the air flow power parameters match the material characteristics and improve the purging effect; by adjusting the air flow power parameters, it can better adapt to different material characteristics, improve the purging efficiency, reduce the purging time, and reduce energy consumption; adjusting the air flow power parameters according to the particle size of the material can avoid material breakage caused by too strong air flow, protect the integrity of the material, and improve the product quality.

[0085] Figure 3 It is a schematic structural diagram of an anti-blocking control system provided by the embodiments of the present application. As Figure 3 shown, the anti-blocking control system 300 includes:

[0086] An identification module 301, which is used to respond to the blockage risk triggered by the pressure change rate of the conveying pipeline and identify the pressure imbalance position of the conveying pipeline;

[0087] An acquisition module 302, which is used to determine at least one air supplement node in the downstream area of the pressure imbalance position, where the downstream area is related to the transmission direction of the material in the conveying pipeline;

[0088] A control module 303, which is used to determine the air flow power parameters for each air supplement node to balance the pressure of the conveying pipeline according to the physical properties of the material, and supplement air to each air supplement node according to each air flow power parameter, where the physical properties include particle size and humidity.

[0089] As an example, Figure 4 It is a schematic diagram for anti-blocking control of a conveying pipeline provided by the embodiments of the present application. As Figure 4As shown in the figure, it includes a conveying pipeline, multiple air supplement nodes (injectors and high-frequency solenoid valves are provided at the air supplement nodes), multiple pressure sensors, a high-level silo, an air compressor, and a feeding device. Among them, the air compressor provides sufficient pressure and flow rate for the air flow in the conveying pipeline. By adjusting the output pressure and flow rate of the air compressor, the speed and temperature of the air flow can be controlled to meet different conveying requirements; the feeding device is used to evenly feed the material into the conveying pipeline; the high-frequency solenoid valve can quickly switch the on-off of the air flow to ensure precise control of the air supplement operation and avoid the risk of blockage caused by the delay or excessive air supplement of the air flow; the injector can mix the air flow and the material to form a uniform gas-solid two-phase flow to improve the conveying efficiency; the high-level silo is used to store the material; the pressure sensor is used to monitor the pressure in the conveying pipeline in real time.

[0090] Furthermore, the anti-blocking control system can be connected to the conveying pipeline. By identifying the pressure imbalance position of the conveying pipeline, the number of air supplement nodes required in the downstream area of the pressure imbalance position can be determined; then, according to the physical properties of the material, the air flow dynamic parameters for each air supplement node to balance the pressure of the conveying pipeline are determined; and according to each air flow dynamic parameter, the air supplement operation is carried out through the required air supplement nodes.

[0091] Figure 5 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Figure 5 The shown electronic device is only an example and should not bring any limitation to the functions and usage scope of the embodiments of the present application.

[0092] As Figure 5 shown, the electronic device 500 includes a processor 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM, Read Only Memory) 502 or the program loaded from the memory 506 to the random access memory (RAM, Random Access Memory) 503. In the RAM 503, various programs and data required for the operation of the electronic device 500 are also stored. The processor 501, ROM 502, and RAM 503 are connected to each other through a bus 504. The input / output (I / O, Input / Output) interface 505 is also connected to the bus 504.

[0093] The following components are connected to the I / O interface 505: a memory 506 including a hard disk, etc.; and a communication part 507 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part 507 performs communication processing via a network such as the Internet; the drive 508 is also connected to the I / O interface 505 as needed.

[0094] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program carried on a computer-readable medium, and the computer program includes program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 507. When the computer program is executed by the processor 501, the above functions defined in the method of the present application are executed.

[0095] In an exemplary embodiment, a storage medium including instructions is also provided, such as a memory including instructions, and the above instructions can be executed by the processor 501 of the electronic device 500 to complete the above method. Optionally, the storage medium can be a non-transitory computer-readable storage medium. For example, the non-transitory computer-readable storage medium can be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage devices, etc.

[0096] In the present application, a computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and the computer-readable medium can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0097] Figure 6 It is a schematic structural diagram of another electronic device provided according to an embodiment of the present application. Figure 6 The illustrated electronic device is merely an example and should not impose any limitation on the functions and usage scope of the embodiments of the present application. As Figure 6 shown, the electronic device 600 includes a processor 601 and a memory 602. Among them, the memory 602 is used to store program code, and the processor 601 is connected to the memory 602 for reading the program code from the memory 602 to implement the anti-blocking control method in the above embodiment.

[0098] Optionally, the number of processors 601 can be one or more.

[0099] Optionally, the electronic device may further include an interface 603, and the number of the interfaces 603 may be multiple. The interface 603 may be connected to an application program and may receive data of an external device such as a sensor, etc.

[0100] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field not disclosed in this application. The specification and examples are only regarded as exemplary, and the true scope and spirit of this application are pointed out by the following claims.

[0101] It should be understood that this application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is only limited by the appended claims.

Claims

1. An anti-blocking control method, characterized in that, Including: Trigger a clogging risk in response to the pressure change rate of the conveying pipeline, and identify the pressure imbalance position of the conveying pipeline; Determine at least one air supplement node in the downstream area of the pressure imbalance position, where the downstream area is related to the transmission direction of the material in the conveying pipeline; According to the physical properties of the material, determine the airflow dynamic parameters of each air supplement node for balancing the pressure of the conveying pipeline, and perform air supplement on each air supplement node according to each airflow dynamic parameter, where the physical properties include particle size and humidity.

2. The method according to claim 1, wherein The step of triggering a clogging risk in response to the pressure change rate of the conveying pipeline and identifying the pressure imbalance position of the conveying pipeline includes: Real-time monitor the pressure change rate in the conveying pipeline. If the pressure change rate exceeds a preset safety threshold, determine that there is a blockage risk in the conveying pipeline; Determine the pressure imbalance position of the conveying pipeline based on the blockage risk.

3. The method according to claim 2, wherein Before the step of determining that there is a blockage risk in the conveying pipeline if the pressure change rate exceeds a preset safety threshold, it further includes: Determine the first pressure change rate attribute belonging to normal operation and the second pressure change rate attribute belonging to a clogging event from the historical operation data of the conveying pipeline, where both the first pressure change rate attribute and the second pressure change rate attribute are related to the value range, frequency distribution, and probability distribution; Determine the safety threshold according to the first pressure change rate attribute and the second pressure change rate attribute, where the safety threshold is greater than or equal to the maximum pressure change rate under normal operation conditions and less than or equal to the minimum pressure change rate under clogging event conditions.

4. The method according to claim 2, wherein The step of determining the pressure imbalance position of the conveying pipeline based on the blockage risk includes: Determine the pressure imbalance position of the conveying pipeline based on the blockage risk according to the change trend of the pressure gradient along the conveying pipeline.

5. The method according to claim 1, wherein The step of determining at least one air supplement node in the downstream area of the pressure imbalance position includes: Determine the specific range of the downstream area according to the pressure imbalance position and the total length of the conveying pipeline; Adopt a fuzzy PID algorithm to analyze the historical clogging events within the specific range, and determine the number and distribution positions of the air supplement nodes required at the current moment within the specific range, where the historical clogging events are obtained from the historical operation data of the conveying pipeline.

6. The method according to any one of claims 1-5, characterized in that, The step of determining the airflow dynamic parameters of each air supplement node for balancing the pressure of the conveying pipeline according to the physical properties of the material includes: Determine the airflow pressure, airflow flow rate, airflow velocity, and airflow temperature required for each air supplement node according to the physical properties of the material; Take the airflow pressure, the airflow flow rate, the airflow velocity, and the airflow temperature as the airflow dynamic parameters for balancing the pressure of the conveying pipeline.

7. The method according to claim 6, wherein The step of performing air supplement on each air supplement node according to each airflow dynamic parameter includes: Determine the opening sequence of each air supplement node, the airflow opening time of each air supplement node, the opening interval time between adjacent air supplement nodes, and the peak pressure when each air supplement node performs purging according to each airflow dynamic parameter; Perform air supplement for each of the air supplement nodes according to the opening sequence, the air flow opening time, the opening interval time, and the peak pressure.

8. An anti-blocking control system, characterized in that, Comprising: An identification module, configured to trigger a blockage risk in response to a pressure change rate of a conveying pipeline, and identify a pressure imbalance position of the conveying pipeline; An acquisition module, configured to determine at least one air supplement node in a downstream area of the pressure imbalance position, wherein the downstream area is related to the transmission direction of the material in the conveying pipeline; A control module, configured to determine air flow dynamic parameters for each of the air supplement nodes to balance the pressure of the conveying pipeline according to the physical properties of the material, and perform air supplement for each of the air supplement nodes according to the air flow dynamic parameters, wherein the physical properties include particle size and humidity.

9. An electronic device, characterized in that, Comprising: A processor; A memory for storing instructions executable by the processor; Wherein, the processor is configured to execute the instructions to implement the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that, Comprising a computer program which, when executed by a processor, implements the method according to any one of claims 1-7.

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