Upstream flow control method and device for bulk material online metering device

Abstract

The application relates to an upstream stable flow control method and device of a bulk material online metering device, relates to the technical field of industrial automation control, and comprises the following steps: making the to-be-loaded raw material flow to a dynamic solid flow metering scale through a flow guide channel to collect actual loading quality; calculating the difference between the actual loading quality and target loading quality to generate an error quality; judging whether the error quality meets the requirement of channel correction error quality; if not, collecting raw material loading quality, and determining the raw material loading quality as the actual loading quality for cyclic judgment; if yes, collecting actual channel flow guide parameters; adjusting the flow guide channel according to the actual channel flow guide parameters, collecting the corrected raw material loading quality, and determining the corrected raw material loading quality as the actual loading quality for cyclic judgment. The application has the effect of improving the precision of metering results.

Description

Technical Field

[0001] This application relates to the technical field of industrial automation control, and in particular to an upstream flow stabilization control method and device for online metering devices for bulk materials. Background Technology

[0002] Dynamic solid flow scales are measuring instruments that can measure the instantaneous and cumulative flow of solid bulk materials, such as granules, powders, and lumps, online, continuously, and in real time. They include belt-type dynamic flow scales, spiral dynamic flow scales, impeller-type dynamic flow scales, and weight-adding dynamic flow scales.

[0003] Among related technologies, online metering technology refers to breaking down dynamically flowing solid bulk materials into the smallest measurable weight units. By using weight sensors and rate / time sensors in tandem to collect the weight of the units and the material flow rate, the instantaneous flow rate is calculated in real time based on the core formula "flow rate = unit weight × flow rate". The instantaneous flow rate is then integrated over time to obtain the cumulative flow rate. At the same time, a dynamic compensation calibration mechanism is combined to offset operating condition interference and ensure metering accuracy. Ultimately, this technology achieves online, continuous, and real-time metering during the solid material transportation process.

[0004] Regarding the aforementioned technologies, when using a dynamic flow scale with a punch plate to continuously measure materials, the continuous impact of the material on both sides of the channel causes aging on both sides of the channel, especially the right side. This results in a shift in the position and flow velocity of the material when it bounces back onto the impact weighing plate after passing through the right side of the channel, leading to a large error in the measurement results. There is still room for improvement. Summary of the Invention

[0005] To improve the accuracy of measurement results, this application provides an upstream flow stabilization control method and device for online metering devices for bulk materials.

[0006] Firstly, this application provides an upstream flow stabilization control method for an online metering device for bulk materials, employing the following technical solution:

[0007] The upstream flow stabilization control method for online metering devices for bulk materials includes:

[0008] The preset raw materials to be loaded are directed to the preset dynamic solid flow metering scale through a preset guide channel in order to collect the actual loading mass.

[0009] Calculate the difference between the actual loaded mass and the preset target loaded mass to generate the error mass;

[0010] Determine whether the error quality meets the preset requirements for channel correction error quality;

[0011] If the conditions are not met, the raw material to be loaded is directed to the dynamic solid flow metering scale through the diversion channel to collect the loading mass of the raw material and determine the loading mass of the raw material as the actual loading mass for cyclic judgment.

[0012] If satisfied, the actual channel flow parameters are collected.

[0013] The guide channel is adjusted according to the actual channel flow parameters, and the raw material to be loaded flows along the guide channel to the dynamic solid flow metering scale to collect the corrected raw material loading mass. The corrected raw material loading mass is then determined as the actual loading mass and the process is repeated.

[0014] Optionally, the steps for adjusting the guide channel according to the actual channel flow parameters include:

[0015] Collect data on the thickness, area, and duration of the accumulation in the trench.

[0016] Determine whether the thickness of the buildup in the channel meets the preset channel cleaning requirements;

[0017] If the conditions are met, the preset channel accumulation cleaning device will be used to clean the guide channel based on the channel accumulation thickness, channel accumulation area, and channel accumulation duration.

[0018] If the conditions are not met, the actual raw material flow rate and the actual raw material landing point will be collected.

[0019] The actual channel length is adjusted based on the actual raw material flow rate, the actual raw material landing point, and the actual channel guide parameters.

[0020] Optionally, the channel accumulation cleaning device includes a purging air pump and a channel vibration assembly. The steps of controlling the preset channel accumulation cleaning device to clean the guide channel according to the channel accumulation thickness, channel accumulation area, and channel accumulation duration include:

[0021] The product of the preset pressure correction parameter and the channel buildup thickness is calculated and summed with the preset minimum purge pressure to generate the actual purge pressure.

[0022] The product of the preset vibration frequency correction parameter and the channel accumulation area is calculated and summed with the preset minimum vibration frequency to generate the actual vibration frequency.

[0023] The product of the preset vibration duration correction parameter and the channel accumulation duration is calculated and summed with the preset minimum vibration duration to generate the actual vibration duration.

[0024] The purging air pump is controlled to purge according to the actual purging air pressure and actual vibration duration, and the channel vibration component is controlled to vibrate according to the actual vibration duration and actual vibration frequency, so that the residual raw material to be loaded is removed from the guide channel.

[0025] Optionally, the step of adjusting the actual channel length based on the actual raw material flow rate, the actual raw material landing point, and the actual channel guiding parameters includes:

[0026] Find the actual channel inclination angle, actual channel length, and actual channel spacing from the actual channel flow guidance parameters;

[0027] Determine whether the actual raw material flow rate meets the preset flow rate correction requirements;

[0028] If the conditions are met, the guide channel will be adjusted according to the actual raw material flow rate, the actual channel inclination angle, and the actual channel length.

[0029] If the conditions are not met, the guide channel will be adjusted according to the actual raw material landing point, the actual channel spacing, and the actual channel inclination angle.

[0030] Optionally, the steps for adjusting the guide channel based on the actual raw material flow rate, the actual channel inclination angle, and the actual channel length include:

[0031] Find the lengths of the vertical and inclined channels from the actual channel lengths;

[0032] Calculate the sum between the lengths of the vertical and inclined sections of the channel to generate the actual total channel length;

[0033] Calculate the quotient between the preset normal raw material flow rate and the actual raw material flow rate to generate flow rate correction parameters;

[0034] Calculate the product between the actual total channel length and the square of the velocity correction parameter to generate the corrected total channel length;

[0035] Calculate the product between the vertical channel length and the velocity correction parameter to generate the corrected vertical channel length;

[0036] Calculate the difference between the total length of the corrected channel and the length of the corrected vertical channel to generate the length of the corrected inclined channel;

[0037] The normal raw material flow rate, the actual raw material flow rate, and the actual channel inclination angle are analyzed to generate a corrected channel inclination angle.

[0038] The expansion and contraction of the guide channel are controlled by adjusting the length of the vertical channel and the length of the inclined channel, and the angle of the guide channel is adjusted by adjusting the inclination angle of the channel to ensure that the flow rate of the raw material to be loaded after adjustment is consistent with the flow rate of the normal raw material.

[0039] Optionally, the guide channel includes a vertical guide channel and an inclined guide channel. The step of adjusting the guide channel according to the actual raw material landing point, the actual channel spacing, and the actual channel inclination angle includes:

[0040] Calculate the difference between the actual raw material landing point and the preset normal raw material landing point to generate the landing point offset.

[0041] Determine whether the offset of the landing point meets the preset positive offset requirement;

[0042] If satisfied, the preset positive correction coefficient will be determined as the channel spacing correction coefficient.

[0043] If not satisfied, the preset reverse correction coefficient will be set as the channel spacing correction coefficient.

[0044] The channel spacing correction parameters, landing point offset, actual channel spacing and actual channel tilt angle are analyzed to generate corrected channel spacing and corrected channel tilt angle.

[0045] The vertical guide channel is moved horizontally according to the corrected channel spacing, and the inclined guide channel is adjusted according to the corrected channel inclination angle to ensure that the landing position of the corrected raw material is consistent with the landing position of the normal raw material.

[0046] Optionally, the steps of analyzing the channel spacing correction parameters, landing point offset, actual channel spacing, and actual channel inclination angle to generate the corrected channel spacing and corrected channel inclination angle include:

[0047] Calculate the product between the channel spacing correction factor and the absolute value of the landing point offset to generate the channel spacing correction value;

[0048] Calculate the difference between the actual channel spacing and the channel spacing correction value to generate the corrected channel spacing;

[0049] Calculate the product between the preset landing angle correction parameter and the landing position offset to generate the landing tilt angle correction angle;

[0050] Calculate the sum between the landing point tilt angle correction angle and the actual channel tilt angle to generate the corrected channel tilt angle.

[0051] Secondly, this application provides an upstream flow stabilization control device for an online metering device for bulk materials, which adopts the following technical solution:

[0052] The upstream flow stabilization control device for the online metering device for bulk materials includes:

[0053] The data acquisition module is used to collect the actual loading mass, raw material loading mass, actual channel flow parameters, and corrected raw material loading mass.

[0054] A memory for storing a program for an upstream flow stabilization control method for an online metering device for bulk materials as described in any of the preceding claims;

[0055] The processor and the program in the memory can be loaded and executed by the processor to implement the upstream flow stabilization control method of the online metering device for bulk materials as described in any of the above.

[0056] In summary, this application includes at least one of the following beneficial technical effects:

[0057] 1. The raw material to be loaded is directed to the dynamic solid flow metering scale via a guide channel to collect the actual loading mass. The difference between the actual loading mass and the preset target loading mass is calculated to obtain the error mass. It is then determined whether the error mass meets the preset channel correction error mass requirements. If not, the raw material to be loaded is directed to the dynamic solid flow metering scale via the guide channel to collect the raw material loading mass, and this raw material loading mass is determined as the actual loading mass for cyclic judgment. If the requirements are met, the actual channel guide parameters are collected, the guide channel is adjusted according to the actual channel guide parameters, and the raw material to be loaded is directed to the dynamic solid flow metering scale along the guide channel to collect the corrected raw material loading mass. This corrected raw material loading mass is determined as the actual loading mass for cyclic judgment. By adjusting the guide channel, the raw material to be loaded impacts the dynamic solid flow metering scale evenly and stably, thereby improving the accuracy of the measurement results.

[0058] 2. By determining whether the thickness of the channel accumulation meets the channel cleaning requirements, if it does, the channel accumulation cleaning device is controlled to clean the guide channel based on the channel accumulation thickness, channel accumulation area, and channel accumulation time; if it does not meet the requirements, the actual raw material flow rate and actual raw material landing point are collected, and the actual channel length is adjusted based on the actual raw material flow rate, actual raw material landing point, and actual channel guide parameters, so that the raw material to be loaded can maintain a stable flow rate and landing point, thereby improving the accuracy of the measurement results;

[0059] 3. By finding the actual channel inclination angle, actual channel length, and actual channel spacing in the actual channel flow parameters, determine whether the actual raw material flow rate meets the flow rate correction requirements. If it does, adjust the flow channel according to the actual raw material flow rate, actual channel inclination angle, and actual channel length. If it does not meet the requirements, adjust the flow channel according to the actual raw material landing point, actual channel spacing, and actual channel inclination angle. In this way, adjust the flow channel according to different situations, so that the raw material to be loaded can maintain a stable flow rate and landing point. Attached Figure Description

[0060] Figure 1 This is a flowchart of the upstream flow stabilization control method of the online metering device for bulk materials in the embodiments of this application.

[0061] Figure 2 This is a flowchart of the steps for adjusting the guide channel according to the actual channel flow parameters in this embodiment of the application.

[0062] Figure 3 This is a flowchart of the steps in which a preset channel accumulation cleaning device cleans the guide channel according to the channel accumulation thickness, channel accumulation area and channel accumulation time in the embodiments of this application.

[0063] Figure 4 This is a flowchart of the steps in this application embodiment to adjust the actual channel length based on the actual raw material flow rate, the actual raw material landing point, and the actual channel guiding parameters.

[0064] Figure 5 This is a flowchart illustrating the steps of adjusting the guide channel based on the actual raw material flow rate, the actual channel inclination angle, and the actual channel length in this embodiment of the application.

[0065] Figure 6 This is a flowchart of the steps for adjusting the guide channel according to the actual raw material landing point, the actual channel spacing, and the actual channel inclination angle in this application embodiment.

[0066] Figure 7 This is a flowchart of the steps in this application embodiment to analyze the channel spacing correction parameters, landing point position offset, actual channel spacing and actual channel tilt angle to generate corrected channel spacing and corrected channel tilt angle. Detailed Implementation

[0067] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1 to 7 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0068] This application discloses an upstream flow stabilization control method for an online metering device for bulk materials. This method primarily addresses the issue of improving the accuracy of metering results. Specifically, it discloses a dynamic solid flow metering scale, a flow guide channel, a processing terminal, and a flow scale status monitoring device. The processing terminal is communicatively connected to the flow scale status monitoring device, the dynamic solid flow metering scale, and the flow guide channel to achieve data interaction and control. After the dynamic solid flow metering scale sends the collected actual raw material mass to the processing terminal, the processing terminal calculates the difference between the actual loading mass and the target loading mass to obtain the error mass. This error mass is then compared with the channel correction error mass. When the error mass is within the range of the channel correction error mass, the processing terminal controls the flow scale status monitoring device to collect the actual channel flow parameters and adjusts the flow guide channel according to these parameters. This aims to quickly and reasonably control the adjustment of the flow guide channel, causing the raw material to be loaded to flow along the flow guide channel to the dynamic solid flow metering scale, thereby improving the accuracy of the metering results.

[0069] Reference Figure 1This application discloses an upstream flow stabilization control method for an online metering device for bulk materials, comprising the following steps:

[0070] Step S100: The preset raw material to be loaded is directed to the preset dynamic solid flow metering scale through the preset guide channel to collect the actual loading mass.

[0071] The actual loading mass refers to the mass of the raw materials to be loaded into the dynamic solid flow metering device, as measured by the dynamic solid flow metering scale, in order to load the target loading mass of the loading truck. The processing terminal sends a working signal to the dynamic solid flow metering device, so that the raw materials to be loaded are filled into the dynamic solid flow metering device and flow along the guide channel to the dynamic solid flow metering scale. The actual loading mass is obtained by measuring the mass of the raw materials by the dynamic solid flow metering scale.

[0072] A dynamic solids flow metering device refers to a collection of components used to assist the flow of raw materials to be loaded into a dynamic solids flow metering scale and to measure the raw materials to be loaded, including a flow channel and a dynamic solids flow metering scale.

[0073] Dynamic solid flow metering scales are components used to measure raw materials to be loaded.

[0074] A flow guide channel is a semi-enclosed irregular-shaped chute in a dynamic solid flow metering device used to guide the raw material to be loaded to flow along a set trajectory to the center position of the dynamic solid flow metering scale. It consists of a vertical flow guide channel and an inclined flow guide channel. The vertical flow guide channel is a semi-enclosed irregular-shaped chute perpendicular to the horizontal plane in the flow guide channel, used to constrain the path of the raw material to be loaded. Each surface in the vertical flow guide channel is composed of a surface that can be proportionally extended or retracted.

[0075] An inclined guide channel is a semi-enclosed, irregularly shaped chute that narrows at the bottom and can adjust its angle with the horizontal plane. It is used to guide the raw materials to be loaded into a dynamic solid flow metering scale. Each surface of the inclined guide channel is composed of a surface that can extend and retract proportionally. The inclined guide channel includes an electric push rod and a hinge fulcrum. After receiving the adjustment angle transmitted from the processing terminal, the electric push rod is extended or retracted according to the adjustment angle, so that the inclined guide channel rotates around the hinge fulcrum, thereby changing the angle with the horizontal plane.

[0076] A loading truck is a truck used to carry and transport raw materials.

[0077] Step S101: Calculate the difference between the actual load mass and the preset target load mass to generate the error mass.

[0078] Among them, error quality refers to the deviation between the actual measured mass of the raw material to be loaded and the target loading mass. The error quality can be obtained by subtracting the actual loading mass from the target loading mass through the processing terminal and then taking the absolute value of the result.

[0079] The target loading mass refers to the mass of raw materials to be loaded into the loading truck in one loading operation. In one embodiment, the target loading mass is 25 tons.

[0080] Step S102: Determine whether the error quality meets the preset requirements for channel correction error quality.

[0081] The channel correction error quality refers to the error quality corresponding to the need to adjust the guide channel. In one embodiment, the channel correction error quality is ±200kg. The requirement of channel correction error means that when the error quality is not less than the channel correction error quality, the guide channel needs to be adjusted.

[0082] By processing the terminal to determine whether the error quality meets the requirements of the channel correction error quality, it can be determined whether the guide channel needs to be adjusted.

[0083] Step S1021: If the condition is not met, the raw material to be loaded is directed to the dynamic solid flow metering scale through the guide channel to collect the loading mass of the raw material and determine the loading mass of the raw material as the actual loading mass for cyclic judgment.

[0084] If the processing terminal determines that the error quality does not meet the requirements for channel correction error quality, it means that no adjustment is needed to the guide channel. Therefore, the processing terminal determines the raw material loading quality and sets it as the actual loading quality, and performs cyclic judgment to achieve real-time detection of error quality and timely adjustment of the guide channel.

[0085] The raw material loading mass refers to the actual mass of the raw material to be loaded when it is loaded onto the loading truck according to the target loading mass, as measured by a dynamic solid flow meter. The processing terminal sends a working signal to the dynamic solid flow metering device, so that the raw material to be loaded is filled into the dynamic solid flow metering device, and then flows to the dynamic solid flow metering scale through the guide channel. The raw material loading mass is then measured by the dynamic solid flow metering scale.

[0086] Step S1022: If satisfied, collect the actual channel flow parameters.

[0087] The actual channel flow parameters refer to the data set used to store the actual channel tilt angle, actual channel length, and actual channel spacing in the current state of the channel. The actual channel flow parameters can be obtained by summarizing the actual channel tilt angle, actual channel length, and actual channel spacing through the processing terminal.

[0088] The actual channel tilt angle refers to the angle between the tilted guide channel and the horizontal plane. In one embodiment, the actual channel tilt angle can be obtained by installing a tilt sensor on the tilt guide channel and determining the angle between the direction of gravity and the mounting surface of the tilt sensor by an internal accelerometer.

[0089] The actual channel length refers to the data set of the guide channel lengths corresponding to the inclined guide channel and the vertical guide channel, respectively. In one embodiment, a pull rope displacement sensor is installed at the top of the vertical guide channel, and the pull rope end is connected to the bottom of the vertical guide channel. Pulling the pull rope displacement sensor from the reference point and collecting the change in rope length will give the length of the vertical guide channel. Then, a pull rope displacement sensor is installed at the top of the inclined guide channel, and the pull rope end is connected to the bottom of the inclined guide channel. Pulling the pull rope displacement sensor from the reference point and collecting the change in rope length will give the length of the inclined guide channel. The actual channel length is obtained by summing the two measured data.

[0090] The actual channel spacing refers to the distance between the inner walls on both sides of the vertical guide channel. In one embodiment, a pull rope displacement sensor is installed on the left side of the vertical guide channel, and the end of the pull rope is connected to the right side of the vertical guide channel. By pulling the pull rope displacement sensor from the left side and collecting the change in the length of the rope, the actual channel spacing can be obtained.

[0091] Step S10221: Adjust the guide channel according to the actual channel flow parameters, and make the raw material to be loaded flow along the guide channel to the dynamic solid flow metering scale, so as to collect the corrected raw material loading mass, and determine the corrected raw material loading mass as the actual loading mass for cyclic judgment.

[0092] If the processing terminal determines that the error quality meets the requirements for channel correction error quality, it indicates that the guide channel needs adjustment. Therefore, the processing terminal adjusts the guide channel according to the actual channel guidance parameters. The specific method is as follows: Figure 2 The process involves several steps, including determining the corrected raw material loading mass, setting the corrected raw material loading mass as the actual loading mass, and performing cyclical judgments to achieve real-time detection of error quality and timely adjustment of the guide channel.

[0093] The corrected raw material loading mass refers to the actual mass of the raw material to be loaded, measured by a dynamic solid flow meter, when the raw material is loaded onto the loading truck according to the target loading mass after the guide channel is adjusted. The processing terminal sends a working signal to the dynamic solid flow metering device, so that the raw material to be loaded is filled into the dynamic solid flow metering device and flows to the dynamic solid flow metering device through the guide channel. The raw material to be loaded is then measured by the dynamic solid flow metering device to obtain the corrected raw material loading mass.

[0094] Reference Figure 2 The steps for adjusting the guide channel based on the actual channel flow parameters include:

[0095] Step S200: Collect the stacking thickness, stacking area, and stacking duration of the channel.

[0096] The channel accumulation thickness refers to the thickness of the raw material to be loaded that is piled on the inner wall of the guide channel. In one embodiment, an infrared ranging sensor is installed on the guide channel and emits infrared light through the infrared ranging sensor to the guide channel. The distance between the sensor and the inner wall of the channel when there is no accumulation and the distance between the sensor and the inner wall of the channel when there is accumulation are collected. The two measured data are subtracted by the processing terminal and the absolute value of the difference is calculated to obtain the channel accumulation thickness.

[0097] The channel accumulation area refers to the contact area between the raw material to be loaded and the inner wall of the channel. In one embodiment, by attaching a diffuse reflection photoelectric array sensor to the channel, the channel is covered by the diffuse reflection photoelectric array sensor. When there is raw material to be loaded on the inner wall of the channel, the number of blocked reflective photoelectric array sensors is collected, and the ratio of the blocked number to the total number is calculated to obtain the accumulation area ratio. The processing terminal multiplies the output area ratio by the inner wall area of ​​the channel to obtain the channel accumulation area.

[0098] The inner wall area of ​​the channel refers to the sum of the areas of the inner walls of the guide flow channel, which is obtained by searching historical data through the processing terminal.

[0099] The channel accumulation time refers to the time that the raw materials to be loaded accumulate on the inner wall of the guide channel remain on the inner wall of the guide channel. In one embodiment, the timing module built into the diffuse reflection photoelectric array sensor automatically starts and starts timing and accumulating when it is blocked. After receiving the working signal sent by the processing terminal to the channel accumulation cleaning device and the timing module, the timing stops, and the accumulated value is determined as the channel accumulation time.

[0100] Step S201: Determine whether the thickness of the channel buildup meets the preset channel cleaning requirements.

[0101] Among them, the channel cleaning requirement means that when the thickness of the channel buildup is not zero, the guide channel needs to be cleaned.

[0102] The processing terminal determines whether the thickness of the channel buildup meets the channel cleaning requirements, thereby determining whether the guide channel needs to be cleaned.

[0103] Step S2011: If satisfied, the preset channel accumulation cleaning device is controlled to clean the guide channel according to the channel accumulation thickness, channel accumulation area and channel accumulation time.

[0104] If the processing terminal determines that the channel buildup thickness meets the channel cleaning requirements, it indicates that the guide channel needs to be cleaned. Therefore, the processing terminal controls the channel buildup cleaning device to clean the guide channel based on the channel buildup thickness, channel buildup area, and channel buildup duration. The specific method is described in [reference needed]. Figure 3 The steps.

[0105] A channel accumulation cleaning device is a device used to clean up the raw materials to be loaded that have accumulated on the channel, including a purging air pump and a channel vibration assembly.

[0106] A purge air pump is a device used to blow away or disperse raw materials piled up on a guide channel by blowing air. The purge air pump is installed at the inlet of the dynamic solid flow metering device. After the processing terminal sends a working signal to the channel accumulation cleaning device, the purge air pump extends into the guide channel from the inlet and delivers pulse air pressure to the guide channel according to relevant parameters, thereby blowing away or dispersing the raw materials to be loaded.

[0107] A channel vibration assembly is a device used to detach raw materials that are piled up on a guide channel and are ready to be loaded. The channel vibration assembly is installed on the guide channel and the vibration frequency can be adjusted according to relevant parameters.

[0108] Step S2012: If not satisfied, collect the actual raw material flow rate and the actual raw material landing point.

[0109] If the processing terminal determines that the thickness of the channel accumulation does not meet the channel cleaning requirements, it means that the guide channel does not need to be cleaned. Therefore, the processing terminal determines the actual raw material flow rate and the actual raw material landing point, thereby providing data support for subsequent adjustments to the guide channel.

[0110] The actual raw material flow rate refers to the distance the raw material to be loaded moves per unit time at the instant it falls onto the dynamic solid flow metering scale. In one embodiment, a high-speed industrial camera is installed at the end of the guide channel to measure the time required for the material to be loaded to pass through two points 10cm apart. The actual raw material flow rate can then be obtained by dividing 10cm by the measured time through the processing terminal.

[0111] The actual raw material landing point refers to the position coordinates on the surface of the dynamic solid flow meter when the raw material to be loaded falls onto the dynamic solid flow meter. In one embodiment, the actual raw material landing point can be obtained by installing multiple laser displacement sensors at the end of the guide channel and scanning the outline of the material to be loaded at multiple points. In another embodiment, the actual raw material landing point can be obtained by setting a transparent observation window between the guide channel and the dynamic solid flow meter, taking pictures of the material flow to be loaded with a high-speed camera, and then processing the image to determine the landing point.

[0112] Step S20121: Adjust the actual channel length according to the actual raw material flow rate, the actual raw material landing point, and the actual channel guiding parameters.

[0113] In this process, after the processing terminal determines the actual raw material flow rate, the actual raw material landing point, and the actual channel flow parameters, the processing terminal adjusts the actual channel length based on these parameters. The specific method is described in [reference needed]. Figure 4 This process ensures that the error quality is not within the range of the channel correction error quality, thereby improving the accuracy of the measurement.

[0114] Reference Figure 3 The steps for cleaning the guide channel using a pre-set channel cleaning device, based on the channel accumulation thickness, channel accumulation area, and channel accumulation duration, include:

[0115] Step S300: Calculate the sum between the product of the preset pressure correction parameter and the channel buildup thickness and the preset minimum purge pressure to generate the actual purge pressure.

[0116] The actual purging pressure refers to the pulse pressure required by the purging air pump to loosen the accumulated raw materials to be loaded. The actual purging pressure is obtained by multiplying the pressure correction parameter and the channel accumulation thickness by the processing terminal, and then adding the product to the minimum purging pressure.

[0117] The air pressure correction parameter refers to the correction ratio for adjusting the purging air pressure based on the channel buildup thickness. In one embodiment, the air pressure correction parameter is 0.02.

[0118] Minimum purging pressure refers to the minimum operating pressure of the purging air pump when it performs purging operations. In one embodiment, the minimum purging pressure is 0.2 MPa.

[0119] Step S301: Calculate the sum between the product of the preset vibration frequency correction parameter and the channel accumulation area and the preset minimum vibration frequency to generate the actual vibration frequency.

[0120] The actual vibration frequency refers to the number of times the channel vibration component vibrates per unit time in order to detach the piled raw materials from the guide channel. The actual vibration frequency is obtained by multiplying the vibration frequency correction parameter and the channel pile area by the processing terminal, and then adding the product to the minimum vibration frequency.

[0121] The vibration frequency correction parameter refers to the correction ratio for the vibration frequency based on the channel accumulation area. In one embodiment, the vibration frequency correction parameter is 6.

[0122] The minimum vibration frequency refers to the minimum number of vibrations per unit time when the channel vibration assembly vibrates. In one embodiment, the minimum vibration frequency is 200Hz.

[0123] Step S302: Calculate the sum between the product of the preset vibration duration correction parameter and the channel accumulation duration and the preset minimum vibration duration to generate the actual vibration duration.

[0124] The actual vibration duration refers to the time it takes for the channel vibration component to vibrate in order to detach the accumulated raw material from the guide channel. The actual vibration duration is obtained by multiplying the vibration duration correction parameter and the channel accumulation duration by the processing terminal, and then adding the product to the shortest vibration duration.

[0125] The vibration duration correction parameter refers to the correction ratio for the vibration duration based on the channel accumulation time. In one embodiment, the vibration duration correction parameter is 0.2.

[0126] The shortest vibration duration refers to the shortest vibration time when the channel vibration assembly vibrates. In one embodiment, the shortest vibration duration is 0.3s.

[0127] Step S303: Control the purging air pump to purge according to the actual purging air pressure and actual vibration duration, and control the channel vibration component to vibrate according to the actual vibration duration and actual vibration frequency, so that the residual raw material to be loaded is removed from the guide channel.

[0128] In this process, after the processing terminal determines the actual purging air pressure, actual vibration duration, and actual vibration frequency, the processing terminal controls the purging air pump to output pulse air pressure to the guide channel based on the actual purging air pressure and actual vibration duration, and controls the channel vibration component to work based on the actual vibration duration and actual vibration frequency, so that the guide channel vibrates, thereby causing the accumulated raw materials to be loaded to detach from the guide channel.

[0129] Reference Figure 4 The steps for adjusting the actual channel length based on the actual raw material flow rate, the actual raw material landing point, and the actual channel guiding parameters include:

[0130] Step S400: Find the actual channel inclination angle, actual channel length, and actual channel spacing in the actual channel flow parameters.

[0131] In this step, the actual channel inclination angle, actual channel length, and actual channel spacing are the same as those in step S1022 above. The actual channel inclination angle, actual channel length, and actual channel spacing can be obtained by searching in the actual channel flow parameters through the processing terminal.

[0132] Step S401: Determine whether the actual raw material flow rate meets the preset flow rate correction requirements.

[0133] Among them, the flow rate correction requirement refers to the need to correct the flow rate when the actual raw material flow rate is not within the range of the normal raw material flow rate.

[0134] Normal raw material flow rate refers to the distance the raw material to be loaded moves per unit time when it reaches the dynamic solid flow meter in order to reduce the error rate of the measurement result of the dynamic solid flow meter. In one embodiment, the normal raw material flow rate is 2.5 m / s.

[0135] The processing terminal determines whether the actual raw material flow rate meets the flow rate correction requirements, thereby determining whether the flow rate of the raw material to be loaded needs to be corrected or the landing position of the raw material to be loaded needs to be corrected.

[0136] Step S4011: If satisfied, adjust the guide channel according to the actual raw material flow rate, the actual channel inclination angle, and the actual channel length.

[0137] If the processing terminal determines that the actual raw material flow rate meets the flow rate correction requirements, it indicates that the flow rate of the raw material to be loaded needs to be corrected. Therefore, the processing terminal adjusts the guide channel based on the actual raw material flow rate, the actual channel inclination angle, and the actual channel length. The specific method is described in [reference needed]. Figure 5 This process reduces the error rate of the dynamic solid flow metering scale's measurement results.

[0138] Step S4012: If not satisfied, adjust the guide channel according to the actual raw material landing point, actual channel spacing and actual channel inclination angle.

[0139] If the processing terminal determines that the actual raw material flow rate does not meet the flow rate correction requirements, it indicates that the landing position of the raw material to be loaded needs to be corrected. Therefore, the processing terminal adjusts the guide channel based on the actual raw material landing position, the actual channel spacing, and the actual channel inclination angle. The specific method is described in [reference needed]. Figure 6 This process reduces the error rate of the dynamic solid flow metering scale's measurement results.

[0140] Reference Figure 5 The steps for adjusting the guide channel based on the actual raw material flow rate, the actual channel inclination angle, and the actual channel length include:

[0141] Step S500: Find the lengths of the vertical and inclined channels from the actual channel lengths.

[0142] The vertical channel length refers to the side length of the vertical guide channel perpendicular to the ground. The vertical channel length can be obtained by searching the actual channel length in the processing terminal.

[0143] The length of the inclined channel refers to the side length of the inclined guide channel. The length of the inclined channel can be obtained by searching for the actual channel length in the processing terminal.

[0144] Step S501: Calculate the sum between the length of the vertical section and the length of the inclined section of the channel to generate the actual total length of the channel.

[0145] The actual total channel length refers to the sum of the side lengths of the vertical guide channel and the inclined guide channel. The actual total channel length can be obtained by adding the lengths of the vertical section and the inclined section through the processing terminal.

[0146] Step S502: Calculate the quotient between the preset normal raw material flow rate and the actual raw material flow rate to generate flow rate correction parameters.

[0147] Among them, the flow rate correction parameter refers to the correction ratio coefficient for correcting the actual raw material flow rate. The flow rate correction parameter can be obtained by dividing the normal raw material flow rate by the actual raw material flow rate through the processing terminal.

[0148] The normal raw material flow rate in this step is the same as the normal raw material flow rate in step S401 above, and will not be repeated here.

[0149] Step S503: Calculate the product between the actual total channel length and the square of the velocity correction parameter to generate the corrected total channel length.

[0150] The total length of the corrected channel refers to the sum of the side lengths of the corrected vertical guide channel and the inclined guide channel. The total length of the corrected channel can be obtained by multiplying the actual total channel length by the square of the flow velocity correction parameter through the processing terminal.

[0151] Step S504: Calculate the product between the vertical channel length and the velocity correction parameter to generate the corrected vertical channel length.

[0152] The corrected vertical channel length refers to the side length of the vertical guide channel perpendicular to the ground after correction. The corrected vertical channel length can be obtained by multiplying the vertical channel length with the flow velocity correction parameter through the processing terminal, thus providing data support for subsequent adjustment of the vertical channel length.

[0153] Step S505: Calculate the difference between the total length of the corrected channel and the length of the corrected vertical channel to generate the length of the corrected inclined channel.

[0154] The corrected inclined channel length refers to the side length of the corrected inclined guide channel. The corrected inclined channel length can be obtained by subtracting the corrected vertical channel length from the total corrected channel length through the processing terminal, thus providing data support for subsequent adjustment of the inclined guide channel length.

[0155] Step S506: Analyze the normal raw material flow rate, the actual raw material flow rate, and the actual channel inclination angle to generate a corrected channel inclination angle.

[0156] The corrected channel inclination angle refers to the angle between the corrected inclined guide channel and the horizontal plane. The corrected channel inclination angle is obtained by subtracting the actual raw material flow rate from the normal raw material flow rate through the processing terminal, dividing the difference by the actual raw material flow rate, multiplying the quotient by 10° / (m / s), and finally adding the product to the actual channel inclination angle. This provides data support for subsequent adjustments to the inclination angle of the inclined guide channel.

[0157] Step S507: Control the expansion and contraction of the guide channel according to the length of the corrected vertical channel and the length of the corrected inclined channel, and control the angle change of the guide channel according to the inclination angle of the corrected channel, so that the flow rate of the corrected raw material to be loaded is consistent with the normal raw material flow rate.

[0158] In this process, after the processing terminal determines the length of the corrected vertical channel, the length of the corrected inclined channel, and the inclination angle of the corrected channel, the processing terminal controls the vertical and inclined guide channels to extend and retract according to the length of the corrected vertical channel and the length of the corrected inclined channel, and controls the inclination angle of the inclined guide channel to be adjusted according to the inclination angle of the corrected channel, so that the flow rate of the raw material to be loaded after correction is consistent with the flow rate of the normal raw material.

[0159] Reference Figure 6 The steps for adjusting the guide channel based on the actual raw material landing point, actual channel spacing, and actual channel inclination angle include:

[0160] Step S600: Calculate the difference between the actual raw material landing point and the preset normal raw material landing point to generate the landing point offset.

[0161] The landing position offset refers to the horizontal coordinate deviation between the actual landing position of the raw material to be loaded and the normal landing position. The landing position offset can be obtained by subtracting the horizontal coordinate of the normal landing position from the horizontal coordinate of the actual landing position by the processing terminal.

[0162] The normal raw material landing point position refers to the landing point position of the raw material to be loaded when it arrives at the dynamic solid flow meter in order to reduce the error rate of the measurement result. The normal raw material landing point position is the center position coordinate of the surface of the dynamic solid flow meter. In one embodiment, the normal raw material landing point position is (0, 0).

[0163] Step S601: Determine whether the offset of the landing point meets the preset positive offset requirement.

[0164] Among them, the positive offset requirement means that when the offset of the landing point is positive, the raw material to be loaded will land to the left of the normal landing point position.

[0165] The processing terminal determines whether the offset of the landing point meets the positive offset requirement, thereby determining whether the raw material to be loaded falls to the left of the normal raw material landing point position.

[0166] Step S6011: If satisfied, the preset positive correction coefficient is determined as the channel spacing correction coefficient.

[0167] If the processing terminal determines that the offset of the landing point meets the positive offset requirement, it means that the raw material to be loaded falls to the left of the normal raw material landing point. Therefore, the channel spacing correction coefficient is determined by the processing terminal, thereby providing data support for subsequent correction of the guide channel.

[0168] The channel spacing correction factor refers to the correction ratio of the channel length to ensure that the raw material to be loaded falls at the normal raw material landing position. It is obtained by determining the positive correction factor as the channel spacing correction factor through the processing terminal.

[0169] The positive correction factor is a correction ratio for the channel length when the raw material to be loaded falls to the left of the normal raw material landing point. In one embodiment, the positive correction factor is 0.9.

[0170] Step S6012: If not satisfied, the preset reverse correction coefficient is determined as the channel spacing correction coefficient.

[0171] If the processing terminal determines that the offset of the landing point does not meet the positive offset requirement, it means that the raw material to be loaded falls to the right of the normal raw material landing point. Therefore, the processing terminal determines the reverse correction coefficient as the channel spacing correction coefficient, thereby providing data support for subsequent correction of the guide channel.

[0172] The reverse correction factor refers to the correction ratio of the channel length when the raw material to be loaded falls to the right of the normal raw material landing point. In one embodiment, the forward correction factor is -0.9.

[0173] Step S602: Analyze the channel spacing correction parameters, landing point offset, actual channel spacing and actual channel tilt angle to generate corrected channel spacing and corrected channel tilt angle.

[0174] Among them, the corrected channel spacing refers to the distance between the inner walls of the sides of the corrected vertical guide channels, and the corrected channel inclination angle is the angle between the side of the corrected inclined guide channel and the horizontal plane. The corrected channel spacing and corrected channel inclination angle can be obtained by analyzing the channel spacing correction parameters, the offset of the landing point, the actual channel spacing, and the actual channel inclination angle through the processing terminal. For specific methods, refer to... Figure 7 This process provides data support for subsequent adjustments to the guide channel.

[0175] Step S603: Control the vertical guide channel to move horizontally according to the corrected channel spacing, and control the inclined guide channel to change its angle according to the corrected channel inclination angle, so that the landing position of the corrected raw material to be loaded is consistent with the landing position of the normal raw material.

[0176] In this process, after the processing terminal determines the corrected channel spacing and the corrected channel inclination angle, the processing terminal controls the vertical guide channel to move horizontally according to the corrected channel spacing, and controls the inclined guide channel to change its angle according to the corrected channel inclination angle, so that the landing position of the corrected raw material to be loaded is consistent with the landing position of the normal raw material.

[0177] Reference Figure 7 The steps for generating corrected channel spacing and corrected channel inclination angle include analyzing the channel spacing correction parameters, landing point offset, actual channel spacing, and actual channel tilt angle.

[0178] Step S700: Calculate the product between the channel spacing correction coefficient and the absolute value of the landing point position offset to generate the channel spacing correction value.

[0179] The channel spacing correction value refers to the adjustment length that needs to be adjusted in relation to the actual channel spacing. The channel spacing correction value can be obtained by multiplying the channel spacing correction coefficient by the absolute value of the offset of the landing point position through the processing terminal.

[0180] Step S701: Calculate the difference between the actual channel spacing and the channel spacing correction value to generate the corrected channel spacing.

[0181] In this step, the corrected channel spacing is the same as that in step S602 above. The corrected channel spacing can be obtained by subtracting the channel spacing correction value from the actual channel spacing through the processing terminal.

[0182] Step S702: Calculate the product between the preset landing angle correction parameter and the landing position offset to generate the landing tilt angle correction angle.

[0183] The landing point tilt angle correction angle refers to the adjustment amount of the angle between the side of the inclined guide channel and the horizontal plane in order to correct the landing point position of the raw material to be loaded. The landing point tilt angle correction angle can be obtained by multiplying the landing point angle correction parameter with the landing point position offset by the processing terminal.

[0184] The landing angle correction parameter refers to the ratio of the adjustment amount to the offset amount of the angle between the side of the inclined guide channel and the horizontal plane in order to correct the landing position of the raw material to be loaded. In one embodiment, the landing angle correction parameter is 0.05° / mm.

[0185] Step S703: Calculate the sum between the landing point tilt angle correction angle and the actual channel tilt angle to generate the corrected channel tilt angle.

[0186] In this step, the corrected channel inclination angle is the same as that in step S602 above. The corrected channel inclination angle can be obtained by adding the corrected landing point inclination angle to the actual channel inclination angle through the processing terminal.

[0187] Based on the same inventive concept, embodiments of this application provide an upstream flow stabilization control device for an online metering device for bulk materials, comprising:

[0188] The data acquisition module is used to collect data on actual loading mass, raw material loading mass, actual channel flow parameters, corrected raw material loading mass, channel accumulation thickness, channel accumulation area, channel accumulation time, actual raw material flow rate, and actual raw material landing point.

[0189] A memory used to store the program for the upstream flow stabilization control method of the online metering device for bulk materials;

[0190] The processor and memory can load and execute programs to implement the upstream flow stabilization control method for online metering devices for bulk materials.

[0191] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0192] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed as an upstream flow stabilization control method for an online metering device for bulk materials.

[0193] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0194] Based on the same inventive concept, embodiments of this application provide a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as an upstream flow stabilization control method for an online metering device for bulk materials.

[0195] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0196] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for upstream flow stabilisation control of an on-line bulk material metering device, characterised in that, include: The preset raw materials to be loaded are directed to the preset dynamic solid flow metering scale through a preset guide channel in order to collect the actual loading mass. Calculate the difference between the actual loaded mass and the preset target loaded mass to generate the error mass; Determine whether the error quality meets the preset requirements for channel correction error quality; If the conditions are not met, the raw material to be loaded is directed to the dynamic solid flow metering scale through the diversion channel to collect the loading mass of the raw material and determine the loading mass of the raw material as the actual loading mass for cyclic judgment. If satisfied, the actual channel flow parameters are collected. The actual channel flow guidance parameters refer to the data set used to store the actual channel tilt angle, actual channel length, and actual channel spacing in the current state of the channel. The actual channel flow guidance parameters can be obtained by summarizing the actual channel tilt angle, actual channel length, and actual channel spacing through the processing terminal. The guide channel is adjusted according to the actual channel flow parameters, and the raw material to be loaded flows along the guide channel to the dynamic solid flow metering scale to collect the corrected raw material loading mass, and the corrected raw material loading mass is determined as the actual loading mass for cyclic judgment. The steps for adjusting the guide channel based on the actual channel flow parameters include: Collect data on the thickness, area, and duration of the accumulation in the trench. Determine whether the thickness of the buildup in the channel meets the preset channel cleaning requirements; If the conditions are met, the preset channel accumulation cleaning device will be used to clean the guide channel based on the channel accumulation thickness, channel accumulation area, and channel accumulation duration. If the conditions are not met, the actual raw material flow rate and the actual raw material landing point will be collected. The actual channel length is adjusted based on the actual raw material flow rate, the actual raw material landing point, and the actual channel guide parameters.

2. The upstream flow control method for an on-line bulk material metering device of claim 1, wherein, The channel accumulation cleaning device includes a purging air pump and a channel vibration assembly. The steps for cleaning the guide channel by controlling the preset channel accumulation cleaning device according to the channel accumulation thickness, channel accumulation area, and channel accumulation duration include: The product of the preset pressure correction parameter and the channel buildup thickness is calculated and summed with the preset minimum purge pressure to generate the actual purge pressure. The product of the preset vibration frequency correction parameter and the channel accumulation area is calculated and summed with the preset minimum vibration frequency to generate the actual vibration frequency. The product of the preset vibration duration correction parameter and the channel accumulation duration is calculated and summed with the preset minimum vibration duration to generate the actual vibration duration. The purging air pump is controlled to purge according to the actual purging air pressure and actual vibration duration, and the channel vibration component is controlled to vibrate according to the actual vibration duration and actual vibration frequency, so that the residual raw material to be loaded is removed from the guide channel.

3. The upstream flow control method for an on-line bulk material metering apparatus according to claim 1, wherein, The steps for adjusting the actual channel length based on the actual raw material flow rate, the actual raw material landing point, and the actual channel flow parameters include: Find the actual channel inclination angle, actual channel length, and actual channel spacing from the actual channel flow guidance parameters; Determine whether the actual raw material flow rate meets the preset flow rate correction requirements; If the conditions are met, the guide channel will be adjusted according to the actual raw material flow rate, the actual channel inclination angle, and the actual channel length. If the conditions are not met, the guide channel will be adjusted according to the actual raw material landing point, the actual channel spacing, and the actual channel inclination angle.

4. The upstream flow control method for an on-line bulk material metering apparatus according to claim 3, wherein, The steps for adjusting the guide channel based on the actual raw material flow rate, actual channel inclination angle, and actual channel length include: Find the lengths of the vertical and inclined channels from the actual channel lengths; Calculate the sum between the lengths of the vertical and inclined sections of the channel to generate the actual total channel length; Calculate the quotient between the preset normal raw material flow rate and the actual raw material flow rate to generate flow rate correction parameters; Calculate the product between the actual total channel length and the square of the velocity correction parameter to generate the corrected total channel length; Calculate the product between the vertical channel length and the velocity correction parameter to generate the corrected vertical channel length; Calculate the difference between the total length of the corrected channel and the length of the corrected vertical channel to generate the length of the corrected inclined channel; The normal raw material flow rate, the actual raw material flow rate, and the actual channel inclination angle are analyzed to generate a corrected channel inclination angle. The expansion and contraction of the guide channel are controlled by adjusting the length of the vertical channel and the length of the inclined channel, and the angle of the guide channel is adjusted by adjusting the inclination angle of the channel, so that the flow rate of the raw material to be loaded after adjustment is consistent with the flow rate of the normal raw material.

5. The upstream flow control method for an on-line bulk material metering apparatus according to claim 3, wherein, The guide channel includes a vertical guide channel and an inclined guide channel. The steps for adjusting the guide channel according to the actual raw material landing point, the actual channel spacing, and the actual channel inclination angle include: Calculate the difference between the actual raw material landing point and the preset normal raw material landing point to generate the landing point offset. Determine whether the offset of the landing point meets the preset positive offset requirement; If satisfied, the preset positive correction coefficient will be determined as the channel spacing correction coefficient. If not satisfied, the preset reverse correction coefficient will be set as the channel spacing correction coefficient. The channel spacing correction parameters, landing point offset, actual channel spacing and actual channel tilt angle are analyzed to generate corrected channel spacing and corrected channel tilt angle. The vertical guide channel is moved horizontally according to the corrected channel spacing, and the inclined guide channel is adjusted according to the corrected channel inclination angle to ensure that the landing position of the corrected raw material is consistent with the landing position of the normal raw material.

6. The upstream flow control method for an on-line bulk material metering apparatus according to claim 5, wherein, The steps for generating corrected channel spacing and corrected channel inclination angle by analyzing the channel spacing correction parameters, landing point offset, actual channel spacing, and actual channel inclination angle include: Calculate the product between the channel spacing correction factor and the absolute value of the landing point offset to generate the channel spacing correction value; Calculate the difference between the actual channel spacing and the channel spacing correction value to generate the corrected channel spacing; Calculate the product between the preset landing angle correction parameter and the landing position offset to generate the landing tilt angle correction angle; Calculate the sum between the landing point tilt angle correction angle and the actual channel tilt angle to generate the corrected channel tilt angle.

7. An upstream flow stabilization control device for an online metering device for bulk materials, characterized in that, include: The data acquisition module is used to collect the actual loading mass, raw material loading mass, actual channel flow parameters, and corrected raw material loading mass. A memory for storing the program of the upstream flow stabilization control method for the online metering device for bulk materials as described in any one of claims 1 to 6; The processor and the program in the memory can be loaded and executed by the processor to implement the upstream stabilization control method of the online metering device for bulk materials as described in any one of claims 1 to 6.

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