A method, apparatus and monitoring platform for determining the velocity of solid particles

Abstract

This invention discloses a method, apparatus, and monitoring platform for determining the velocity of solid particles. The method includes: a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform responding to a request to determine the velocity of solid particles; determining test information for at least two sets of test conditions; and controlling the operation of various devices in the monitoring platform based on the test information to determine the test velocity, target gas flow rate, and target liquid flow rate for each set of test conditions; fitting a preset solid particle velocity equation to the coefficients based on the test velocity, target gas flow rate, and target liquid flow rate for each set of test conditions to determine the values ​​of target coefficients; and constructing a solid particle velocity determination formula based on the target coefficient values ​​and the preset solid particle velocity equation, so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles. This method can quickly construct a solid particle velocity measurement formula, which is helpful for the rapid and accurate measurement of solid particle velocity in practical applications.

Description

Technical Field

[0001] This invention relates to the field of deep-sea mining, and more particularly to a method, apparatus, and monitoring platform for determining the velocity of solid particles. Background Technology

[0002] Velocity measurement and prediction of solid particles in vertical hoisting systems for deep-sea mining are key technologies for ensuring mining efficiency and safety. Compared to pure hydraulic hoisting in vertical pipelines, hybrid hydraulic-pneumatic conveying offers higher efficiency and represents a promising production method. However, current measurement techniques struggle to accurately monitor solid particles in the three-phase flow of gas, liquid, and solid phases within deep-sea mining vertical pipeline conveying systems, severely hindering the widespread adoption and application of this technology.

[0003] Therefore, establishing a scheme for determining the velocity of solid particles in a vertical pipeline gas-liquid-solid three-phase flow to provide technical support for deep-sea mining is an urgent problem to be solved. Summary of the Invention

[0004] This invention provides a method, apparatus, and monitoring platform for determining the velocity of solid particles, enabling the rapid construction of solid particle velocity measurement formulas, which facilitates the rapid and accurate measurement of solid particle velocity in practical applications.

[0005] According to one aspect of the present invention, a method for determining the velocity of solid particles is provided, executed by a monitoring platform for gas-liquid-solid three-phase flow transport in a vertical pipeline, the method comprising:

[0006] In response to the request to determine the velocity of solid particles, test information for at least two sets of test conditions is determined, and based on the test information, the operation of each device in the monitoring platform is controlled to determine the test velocity, target gas flow rate, and target liquid flow rate for each set of test conditions.

[0007] Based on the test speed, target gas flow rate and target liquid flow rate under each test condition, the coefficients of the preset solid particle velocity equation are fitted to determine the value of the target coefficients.

[0008] Based on the target coefficient values ​​and the preset solid particle velocity equation, a velocity determination formula for solid particles is constructed so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles.

[0009] According to another aspect of the present invention, a device for determining the velocity of solid particles is provided, the device being disposed in a monitoring platform for vertical pipeline gas-liquid-solid three-phase flow transport, the device comprising:

[0010] The determination module is used to respond to the request to determine the velocity of solid particles, determine the test information of at least two sets of test conditions, and control the operation of each device in the monitoring platform according to the test information to determine the test velocity, target gas flow rate and target liquid flow rate under each set of test conditions.

[0011] The fitting module is used to fit the coefficients of the preset solid particle velocity equation based on the test speed, target gas flow rate and target liquid flow rate under each test condition, so as to determine the value of the target coefficients.

[0012] The module is used to construct a velocity determination formula for solid particles based on the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles.

[0013] According to another aspect of the present invention, a monitoring platform is provided for vertical pipeline gas-liquid-solid three-phase flow transportation, and also for performing the solid particle velocity determination method described in any embodiment of the present invention;

[0014] The monitoring platform includes at least: an air compressor, an air filling pipeline, a gas flow meter, a centrifugal pump, a silo, a conveying pipeline, an electromagnetic flow meter, a high-speed camera, and a scale;

[0015] The delivery pipeline includes horizontal pipe sections, bends, and vertical pipe sections; the vertical pipe sections include observation pipe sections; the liquid phase of the gas-liquid-solid three-phase flow flows sequentially through the horizontal pipe sections, bends, and vertical pipe sections.

[0016] The air compressor is connected to the vertical pipeline through an air filling pipe and fills the vertical pipeline with air through the air filling pipe; the gas flow meter is installed on the air filling pipe to measure the gas flow rate; the electromagnetic flow meter is used for liquid phase flow measurement.

[0017] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0018] At least one processor; and

[0019] A memory communicatively connected to the at least one processor; wherein,

[0020] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the solid particle velocity determination method according to any embodiment of the present invention.

[0021] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the method for determining the velocity of solid particles according to any embodiment of the present invention.

[0022] According to another aspect of the present invention, a computer program product is also provided, the computer program product including a computer program that, when executed by a processor, implements the method for determining the velocity of solid particles according to any embodiment of the present invention.

[0023] The technical solution of this invention involves a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform responding to a request to determine the velocity of solid particles. It determines test information for at least two sets of test conditions and, based on this information, controls the operation of each device within the monitoring platform to determine the test velocity, target gas flow rate, and target liquid flow rate for each test condition. Based on these parameters, a preset solid particle velocity equation is fitted to determine the values ​​of target coefficients. Finally, a solid particle velocity determination formula is constructed based on the target coefficients and the preset solid particle velocity equation. This formula enables the monitoring platform to determine the actual solid particle velocity using the velocity determination formula. By testing and determining the test velocity, target gas flow rate, and target liquid flow rate under different conditions, a vertical pipeline gas-liquid-solid three-phase flow solid particle velocity measurement formula can be quickly constructed, facilitating rapid and accurate measurement of solid particle velocity in practical applications.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a flowchart of a method for determining the velocity of solid particles provided in Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the monitoring platform provided in Embodiment 2 of the present invention;

[0028] Figure 3 This is a schematic diagram of the position of the scale in the monitoring platform provided in Embodiment 2 of the present invention;

[0029] Figure 4 This is a structural block diagram of a solid particle velocity determination device provided in Embodiment 3 of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first," "second," "target," "candidate," and "alternative," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. The acquisition, storage, use, and processing of data in the technical solutions of this application comply with relevant laws and regulations.

[0033] Example 1

[0034] Figure 1 This is a flowchart of a method for determining the velocity of solid particles according to Embodiment 1 of the present invention. This embodiment is applicable to situations where a monitoring platform tests parameters under different test conditions to obtain a formula for determining the velocity of solid particles by fitting coefficients to a preset solid particle velocity equation. This method can be executed by a solid particle velocity determination device, which can be implemented in hardware and / or software. This device can be configured in an electronic device and executed by a monitoring platform used for vertical pipeline gas-liquid-solid three-phase flow transportation, such as... Figure 1 As shown, the method for determining the velocity of the solid particle includes:

[0035] S101. In response to the request to determine the velocity of solid particles, determine the test information of at least two sets of test conditions, and control the operation of each device in the monitoring platform according to the test information to determine the test speed, target gas flow rate and target liquid flow rate under each set of test conditions.

[0036] The "determined request" refers to a request to measure the velocity of solid particles in the observation section of the conveying pipeline, as monitored by the platform, in a vertical pipeline gas-liquid-solid three-phase flow conveying scenario. The "test condition" refers to a preset condition that tests the correlation between the solid particle velocity, the gas flow rate, and the liquid flow rate. Different test conditions can correspond to different test pipe diameters, test particle sizes, and test gas flow rates.

[0037] Each test condition corresponds to a set of test pipe diameters, test particle sizes, and test inflation flow rates. Test information includes the test pipe diameter, test particle size, and test inflation flow rate for each test condition. The control and monitoring platform may include at least one of the following devices: air compressor, inflation pipeline, gas flow meter, centrifugal pump, silo, conveying pipeline, electromagnetic flow meter, high-speed camera, and scale. The test pipe diameter refers to the preset conveying pipeline diameter for the corresponding test condition; the test particle size refers to the preset solid particle size for the corresponding test condition; and the test inflation flow rate refers to the inflation flow rate achieved by the inflation operation target for the corresponding test condition.

[0038] The test speed refers to the velocity of the solid particles measured under the corresponding test conditions. The target gas flow rate refers to the gas flow rate measured by the gas flow meter under the corresponding test conditions. The target liquid flow rate refers to the liquid flow rate measured by the electromagnetic flow meter under the corresponding test conditions.

[0039] For example, different test conditions and corresponding test information can be shown in Table 1 below. The test air flow rates of 1, 2, 3, 4, and 5 indicate that, with the test pipe diameter and test particle size fixed, the air flow rates are increased sequentially based on 1×10⁻³ m³ / s, 2×10⁻³ m³ / s, 3×10⁻³ m³ / s, 4×10⁻³ m³ / s, and 5×10⁻³ m³ / s to test the solid particle velocity under different conditions.

[0040] Table 1: Test Information Table Corresponding to Test Conditions

[0041]

[0042] Optionally, based on the test information, the operation of each device in the monitoring platform is controlled to determine the test speed, target gas flow rate, and target liquid flow rate under each test condition, including:

[0043] 1) For each test condition, add solid particles of the corresponding test particle size into the hopper according to the test information, and inject clean water into the conveying pipeline of the corresponding test diameter.

[0044] Optionally, before the operation of each device in the control and monitoring platform is to be in the corresponding test condition, that is, the initial state of the monitoring platform is that the gate valve of the silo and the ball valve of the air filling pipeline are in the closed state. For example, if the test condition is set to test pipe diameter of 0.1m and test particle diameter of 0.01m, relevant personnel can be instructed to build a monitoring platform using a conveying pipe with the corresponding test pipe diameter, and further add solid particles with a diameter of 0.01m into the silo and inject clean water into the conveying pipeline with a diameter of 0.1m.

[0045] 2) The centrifugal pump, air compressor, air filling pipeline ball valve, flow regulating valve, gas flow meter, silo valve and electromagnetic flow meter in the monitoring platform are controlled in sequence to transport solid particles to the observation section in the conveying pipeline, and the gas flow meter and electromagnetic flow meter are activated at the same time.

[0046] Optionally, the centrifugal pump, air compressor, air filling pipeline ball valve, flow regulating valve, gas flow meter, silo valve, and electromagnetic flow meter in the monitoring platform are controlled sequentially to transport solid particles to the observation section in the conveying pipeline. This includes: controlling the centrifugal pump, air compressor, air filling pipeline ball valve, and flow regulating valve to perform air filling operations, and starting the air filling flow rate measurement based on the gas flow meter; when the gas flow meter detects that the test air filling flow rate has been reached, the silo valve is opened to allow the solid particles in the silo to enter the conveying pipeline of the monitoring platform, and at the same time, the liquid phase flow measurement is started based on the electromagnetic flow meter.

[0047] The delivery pipeline includes horizontal pipe sections, bends, and vertical pipe sections; the vertical pipe sections include observation pipe sections; the liquid phase of the gas-liquid-solid three-phase flow flows sequentially through the horizontal pipe sections, bends, and vertical pipe sections.

[0048] Optionally, the centrifugal pump can be started to make the clean water in the delivery pipeline run at a certain speed, and then the air compressor can be turned on, the ball valve of the air filling pipeline can be opened, and the opening of the flow regulating valve can be adjusted to perform the air filling operation. At the same time, the air filling flow rate value is measured based on the gas flow meter.

[0049] It should be noted that the gas flow meter and electromagnetic flow meter remain in the normally open state after being turned on, so as to facilitate the subsequent screening of the data collected by the gas flow meter and electromagnetic flow meter.

[0050] 3) Use a high-speed camera to acquire images of the observation section in the delivery pipeline for a preset duration, determine the target image, and perform target detection on the target image to determine the target time period for solid particles to pass through the observation section;

[0051] Optionally, target detection is performed on the target image to determine the target time period when solid particles pass through the observation tube segment. This includes: performing target detection processing on the target image to determine the initial image representing the presence of solid particles in the observation tube segment and the final image representing the complete transport and departure of solid particles from the observation tube segment; and determining the target time period when solid particles pass through the observation tube segment based on the acquisition times corresponding to the initial and final images.

[0052] The initial image refers to the image captured when the first solid particle appears in the observation tube segment, and the final image refers to the image captured when the last solid particle leaves the observation tube segment. The target time period refers to the time interval during which solid particles enter and completely pass through the observation tube segment.

[0053] Optionally, the acquisition time corresponding to the initial image can be used as the start time of the target time period, and the acquisition time corresponding to the final image can be used as the end time of the target time period to obtain the target time period.

[0054] For example, when the first solid particle passes through the observation tube section, the high-speed camera records the time as T1. The hopper valve can be closed after running for 2 minutes. When the last solid particle leaves the observation tube section, the time is T2. Then T1 to T2 is the target time period corresponding to this test condition.

[0055] 4) Based on the target image for the target time period, and combined with the measurement data from the gas flow meter and the electromagnetic flow meter, determine the test speed, target gas supply flow rate, and target liquid flow rate for each test condition.

[0056] Optionally, based on the target images within the target time period and combined with the measurement data from the gas flow meter and the electromagnetic flow meter, the test speed, target gas flow rate, and target liquid flow rate under each test condition are determined, including: determining the test speed of solid particles based on the particle tracking method and the changes in solid particles in each target image within the target time period; and determining the target gas flow rate collected by the gas flow meter and the target liquid flow rate collected by the electromagnetic flow meter within the target time period.

[0057] Particle tracking is a numerical method that calculates the trajectory of each particle by solving the kinematic equations of how its position changes over time.

[0058] Optionally, the average value of the gas flow rate collected by the gas flow meter within the target time period can be determined as the target gas flow rate. If the gas flow meter's sampling frequency is 1 second, then the number of target gas flow rate values ​​obtained within the target time period T1 to T2 is (T2-T1). Similarly, the average value of the liquid phase flow rate collected by the electromagnetic flow meter within the target time period can be determined as the target liquid phase flow rate. If the electromagnetic flow meter's sampling frequency is 1 second, then the number of target liquid phase flow rate values ​​obtained within the target time period T1 to T2 can be determined as (T2-T1).

[0059] Optionally, a coordinate system can be established based on the L-shaped scale pre-configured next to the observation tube in the monitoring platform. By performing target detection on each target image within the target time period, the coordinate information of the particles in the observation tube within different image frames (the time difference between two adjacent frames is 1 / high-speed camera frame rate) can be determined. Based on the displacement / time, the vertical velocity of the solid particles can be determined, that is, the test velocity of the solid particles can be determined.

[0060] For example, after measuring the test speed, target gas flow rate, and target liquid flow rate under the test conditions during the target time period from T1 to T2, the opening of the regulating flow valve on the gas filling pipeline can be further adjusted to make the gas filling flow rate reach the set flow rate. Then, the silo valve is opened, and the operations of steps 3) and 4) above are performed to determine the test speed, target gas filling flow rate, and target liquid flow rate under the test conditions during the target time period from T3 to T4. This yields the test speed, target gas filling flow rate, and target liquid flow rate under the same test pipe diameter, the same test particle size, and different test gas filling flow rates.

[0061] For example, after obtaining the test speed, target aeration flow rate, and target liquid flow rate under the same test pipe diameter, the same test particle size, and different test aeration flow rates, all gate valves can be closed, and the solid particles in the silo can be replaced sequentially with solid particles of 0.02m and 0.03m in diameter, and the measurement operation can be performed to obtain the test speed, target aeration flow rate, and target liquid flow rate under the same test pipe diameter, different test particle sizes, and different test aeration flow rates.

[0062] For example, after obtaining the test speed, target gas flow rate, and target liquid flow rate under the same test pipe diameter, different test particle sizes, and different test gas flow rates, all gate valves can be closed again and the liquid in the monitoring platform can be drained. By replacing the reducer and pipeline, the test pipe diameter of the pipeline can be changed to 0.2m and 0.3m in sequence to obtain the test speed, target gas flow rate, and target liquid flow rate under different test pipe diameters, different test particle sizes, and different test gas flow rates.

[0063] S102. Based on the test speed, target gas flow rate and target liquid flow rate under each test condition, perform coefficient fitting on the preset solid particle velocity equation to determine the value of the target coefficient.

[0064] Among them, the target coefficient refers to the parameter that needs to be fitted and solved in the preset solid particle velocity equation. The preset solid particle velocity equation is a preset equation that characterizes the relationship between solid particle velocity and target gas flow rate, target liquid flow rate, solid particle size and pipeline diameter.

[0065] Optionally, the preset solid particle velocity equation can be expressed by the following formula:

[0066]

[0067] in, The values ​​represent the solid particle velocity, all in m / s; k1, k2, and k3 represent target coefficients; d represents the solid particle size; and D represents the conveying pipeline diameter, all in meters. This represents the target gas refueling flow rate, in meters per second (m³). 3 / h; This indicates the target liquid phase flow rate.

[0068] Optionally, based on the test speed, target gas flow rate, and target liquid flow rate under each test condition, the preset solid particle velocity equation is fitted with coefficients to determine the values ​​of the target coefficients. This includes: substituting the test speed, target gas flow rate, and target liquid flow rate under each test condition into the preset solid particle velocity equation; and performing a joint solution based on the least squares method to determine the values ​​of the target coefficients in the preset solid particle velocity equation.

[0069] Optionally, after substituting the test speed, target gas flow rate, and target liquid flow rate under each test condition into the preset solid particle velocity equation, the data can be further fitted using the least squares method, i.e., by finding a function (such as a straight line) that minimizes the sum of squared residuals between the predicted velocity value and the measured velocity value, to obtain the values ​​of k1, k2, and k3 in the preset solid particle velocity equation.

[0070] S103. Based on the value of the target coefficient and the preset solid particle velocity equation, construct a velocity determination formula for solid particles so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles.

[0071] Optionally, the values ​​of the target coefficients can be substituted into the preset solid particle velocity equation to obtain the solid particle velocity determination formula. During the subsequent operation of the monitoring platform, the real-time collected liquid flow rate and gas flow rate values, combined with the solid particle size and the pipeline diameter, are substituted into the determined solid particle velocity determination formula to determine the actual solid particle velocity.

[0072] The technical solution of this invention involves a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform responding to a request to determine the velocity of solid particles. It determines test information for at least two sets of test conditions and, based on this information, controls the operation of each device within the monitoring platform to determine the test velocity, target gas flow rate, and target liquid flow rate for each test condition. Based on these parameters, a preset solid particle velocity equation is fitted to determine the values ​​of target coefficients. Finally, a solid particle velocity determination formula is constructed based on the target coefficients and the preset solid particle velocity equation. This formula enables the monitoring platform to determine the actual solid particle velocity using the velocity determination formula. By testing and determining the test velocity, target gas flow rate, and target liquid flow rate under different conditions, a vertical pipeline gas-liquid-solid three-phase flow solid particle velocity measurement formula can be quickly constructed, facilitating rapid and accurate measurement of solid particle velocity in practical applications.

[0073] Example 2

[0074] Figure 2 This is a schematic diagram of the monitoring platform provided in Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the position of the scale in the monitoring platform provided in Embodiment 2 of the present invention; based on the above embodiments, this embodiment provides a monitoring platform for implementing the solid particle velocity determination method described in any embodiment of the present invention, the monitoring platform being used for vertical pipeline gas-liquid-solid three-phase flow transportation.

[0075] Specifically, such as Figure 2 As shown, the monitoring platform may include at least: an air compressor, an air filling pipeline, a gas flow meter, a centrifugal pump, a silo, a conveying pipeline (not shown in the figure), an electromagnetic flow meter, a high-speed camera, and a scale (not shown in the figure).

[0076] The delivery pipeline includes horizontal sections, bends, and vertical sections; the vertical sections include observation sections; the gas-liquid-solid three-phase flow sequentially passes through the horizontal, bend, and vertical sections; for example... Figure 3 As shown, the scale can be positioned on one side of the observation section (i.e., the observation tube section).

[0077] Optionally, a reducing pipe is positioned between the centrifugal pump and the electromagnetic flow meter. A hopper gate valve is installed at the lower end of the hopper. A flow regulating valve is positioned between the gas flow meter and the air compressor. A check valve, a ball valve, and an air inlet are sequentially installed between the gas flow meter and the vertical pipe. The gas-liquid-solid three-phase flow sequentially passes through the horizontal pipe section, the bend section, and the vertical pipe section before entering the storage tank.

[0078] Optionally, the air compressor is connected to the vertical pipeline via an air filling pipe and fills the vertical pipeline with air through the air filling pipe; a gas flow meter is installed on the air filling pipe to measure the gas flow rate; and an electromagnetic flow meter is used for liquid phase flow measurement.

[0079] Optionally, the horizontal pipe section is connected to the vertical pipe section via a bend, both made of stainless steel round pipe. The horizontal pipe section is connected to the outlet of the centrifugal pump via a reducer, with one end of the reducer having the same diameter as the horizontal pipe and the other end having the same diameter as the centrifugal pump outlet. The observation pipe section is part of the vertical pipe section, with a square outer shape and a round inner shape, made of plexiglass with the same refractive index as the liquid phase in a gas-liquid-solid three-phase flow. The length of the observation pipe section is related to the acquisition frequency of the high-speed camera, and is typically not less than 1 / 500 of the high-speed camera's acquisition frequency, measured in meters (m).

[0080] Optionally, the high-speed camera's acquisition frequency is no less than 500 frames per second, and the camera's field of view can cover the observation section; the scale used is an L-shaped scale, which is attached to the side of the observation tube where the high-speed camera is shooting.

[0081] Optionally, the outlet of the silo is located in a horizontal pipe section, and the electromagnetic flowmeter is installed between the centrifugal pump and the silo (since the solid particle feeding point and the gas filling point are both after the electromagnetic flowmeter, the medium in this section is a pure liquid fluid), ensuring the accuracy of the liquid flow rate measured by the electromagnetic flowmeter.

[0082] Optionally, the air compressor is connected to a vertical pipeline via an air filling pipe, and fills the vertical pipeline with air through the air filling pipe; a gas flow meter is installed on the air filling pipe to measure the gas flow rate; a flow regulating valve, a check valve, and a ball valve are also installed on the air filling pipe; the ball valve allows gas to pass through when open and blocks air filling when closed; the check valve allows gas to pass through in only one direction to prevent liquid from flowing back into the air compressor; the flow regulating valve controls the air filling flow rate by adjusting the valve opening.

[0083] Optionally, the observation section is located above the inflation position and at a distance of not less than 20 times the diameter of the vertical pipe from the inflation point, to ensure that the multiphase flow in the vertical pipe is fully developed and in a stable state; the solid-liquid-gas three-phase flow through the conveying pipeline is eventually collected in the storage tank.

[0084] Example 3

[0085] Figure 4This is a structural block diagram of a solid particle velocity determination device provided in Embodiment 3 of the present invention. This embodiment is applicable to situations where a monitoring platform tests parameters under different test conditions to obtain a solid particle velocity determination formula by fitting coefficients to a preset solid particle velocity equation. The solid particle velocity determination device provided in this embodiment can execute the solid particle velocity determination method provided in any embodiment of the present invention, possessing the corresponding functional modules and beneficial effects of the execution method. This solid particle velocity determination device can be implemented in hardware and / or software and configured in an electronic device with solid particle velocity determination functionality, executed by a monitoring platform used for vertical pipeline gas-liquid-solid three-phase flow transportation, such as... Figure 4 As shown, the device for determining the velocity of solid particles may specifically include:

[0086] The determination module 301 is used to respond to the solid particle velocity determination request, determine the test information of at least two sets of test conditions, and control the operation of each device in the monitoring platform according to the test information to determine the test speed, target gas flow rate and target liquid flow rate under each set of test conditions.

[0087] The fitting module 302 is used to fit the coefficients of the preset solid particle velocity equation based on the test speed, target gas flow rate and target liquid flow rate under each test condition, so as to determine the value of the target coefficient.

[0088] The construction module 303 is used to construct a velocity determination formula for solid particles based on the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles.

[0089] The technical solution of this invention involves a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform responding to a request to determine the velocity of solid particles. It determines test information for at least two sets of test conditions and, based on this information, controls the operation of each device within the monitoring platform to determine the test velocity, target gas flow rate, and target liquid flow rate for each test condition. Based on these parameters, a preset solid particle velocity equation is fitted to determine the values ​​of target coefficients. Finally, a solid particle velocity determination formula is constructed based on the target coefficients and the preset solid particle velocity equation. This formula enables the monitoring platform to determine the actual solid particle velocity using the velocity determination formula. By testing and determining the test velocity, target gas flow rate, and target liquid flow rate under different conditions, a vertical pipeline gas-liquid-solid three-phase flow solid particle velocity measurement formula can be quickly constructed, facilitating rapid and accurate measurement of solid particle velocity in practical applications.

[0090] Furthermore, the test information includes the test pipe diameter, test particle size, and test inflation flow rate corresponding to each test condition; the determination module 301 may include:

[0091] The injection unit is used to add solid particles of the corresponding test particle size into the hopper according to the test information for each test condition, and to inject clean water into the delivery pipeline of the corresponding test diameter.

[0092] The operating unit is used to sequentially control the operation of the centrifugal pump, air compressor, air filling pipeline ball valve, flow regulating valve, gas flow meter, silo valve and electromagnetic flow meter in the monitoring platform to transport solid particles to the observation section in the conveying pipeline, and at the same time start the measurement of the gas flow meter and electromagnetic flow meter.

[0093] The acquisition unit is used to acquire images of the observation section in the delivery pipeline for a preset duration using a high-speed camera, determine the target image, and perform target detection on the target image to determine the target time period during which solid particles pass through the observation section.

[0094] The determination unit is used to determine the test speed, target gas flow rate, and target liquid flow rate for each test condition based on the target image during the target time period and the measurement data from the gas flow meter and electromagnetic flow meter.

[0095] Furthermore, the operating unit is specifically used for:

[0096] Control the centrifugal pump, air compressor, air filling pipeline ball valve and flow regulating valve to perform air filling operation, and measure the air filling flow value based on the gas flow meter;

[0097] When the gas flow meter detects that the test inflation flow rate has been reached, the silo valve is opened to allow the solid particles in the silo to enter the conveying pipeline of the monitoring platform. At the same time, the liquid phase flow measurement is activated based on the electromagnetic flow meter.

[0098] Furthermore, the acquisition unit is specifically used for:

[0099] Target detection processing is performed on the target image to determine the initial image representing the presence of solid particles in the observation tube segment and the final image representing the complete removal of solid particles from the observation tube segment.

[0100] Based on the acquisition times corresponding to the initial and final images, the target time period for solid particles to pass through the observation tube segment is determined.

[0101] Furthermore, the specific use of the unit is as follows:

[0102] Based on the particle tracking method, the test velocity of solid particles is determined according to the changes of solid particles in each target image within the target time period.

[0103] Determine the target gas flow rate collected by the gas flow meter and the target liquid flow rate collected by the electromagnetic flow meter within the target time period.

[0104] Furthermore, the fitting module 302 is specifically used for:

[0105] Substitute the test speed, target gas flow rate, and target liquid flow rate under each test condition into the preset solid particle velocity equation;

[0106] The least squares method is used to solve the problem together to determine the values ​​of the target coefficients in the preset solid particle velocity equation.

[0107] Example 4

[0108] Figure 5 This is a schematic diagram of the structure of the electronic device provided in Embodiment 4 of the present invention. Figure 5 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0109] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0110] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0111] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the method for determining the velocity of solid particles.

[0112] In some embodiments, the solid particle velocity determination method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or mounted on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the solid particle velocity determination method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the solid particle velocity determination method by any other suitable means (e.g., by means of firmware).

[0113] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0114] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0115] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0116] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0117] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0118] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0119] In one embodiment, the present invention further includes a computer program product, which includes a computer program that, when executed by a processor, implements the method for determining the velocity of solid particles according to any embodiment of the present invention.

[0120] In the implementation of a computer program product, computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​as well as conventional procedural programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0121] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0122] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for determining the velocity of solid particles, characterized in that, The method is executed by a monitoring platform used for vertical pipeline gas-liquid-solid three-phase flow transportation, and includes: In response to the request to determine the velocity of solid particles, test information for at least two sets of test conditions is determined, and based on the test information, the operation of each device in the monitoring platform is controlled to determine the test velocity, target gas flow rate, and target liquid flow rate for each set of test conditions. Based on the test speed, target gas flow rate and target liquid flow rate under each test condition, the coefficients of the preset solid particle velocity equation are fitted to determine the value of the target coefficients. Based on the value of the target coefficient and the preset solid particle velocity equation, a velocity determination formula for solid particles is constructed so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles. The test information includes the test pipe diameter, test particle size, and test inflation flow rate for each test condition. Accordingly, based on the test information, the operation of each device in the monitoring platform is controlled to determine the test speed, target gas flow rate, and target liquid flow rate under each test condition, including: For each test condition, solid particles of the corresponding test particle size are added to the hopper according to the test information, and clean water is injected into the conveying pipeline of the corresponding test diameter. The centrifugal pump, air compressor, air filling pipeline ball valve, flow regulating valve, gas flow meter, silo valve and electromagnetic flow meter in the monitoring platform are controlled in sequence to transport solid particles to the observation section in the conveying pipeline, and the gas flow meter and electromagnetic flow meter are activated for measurement at the same time. A high-speed camera is used to acquire images of the observation section in the delivery pipeline for a preset duration, determine the target image, and perform target detection on the target image to determine the target time period during which solid particles pass through the observation section. Based on the target image for the target time period, and combined with the measurement data from the gas flow meter and the electromagnetic flow meter, the test speed, target gas flow rate, and target liquid flow rate for each test condition are determined.

2. The method according to claim 1, characterized in that, The system sequentially controls the operation of centrifugal pumps, air compressors, air filling pipeline ball valves, flow regulating valves, gas flow meters, silo valves, and electromagnetic flow meters on the monitoring platform to transport solid particles to the observation section of the conveying pipeline, including: Control the centrifugal pump, air compressor, air filling pipeline ball valve and flow regulating valve to perform air filling operation, and measure the air filling flow value based on the gas flow meter; When the gas flow meter detects that the test inflation flow rate has been reached, the silo valve is opened to allow the solid particles in the silo to enter the conveying pipeline of the monitoring platform. At the same time, the liquid phase flow measurement is activated based on the electromagnetic flow meter.

3. The method according to claim 1, characterized in that, Target detection is performed on the target image to determine the target time period during which solid particles pass through the observation tube segment, including: Target detection processing is performed on the target image to determine the initial image representing the presence of solid particles in the observation tube segment and the final image representing the complete removal of solid particles from the observation tube segment. Based on the acquisition times corresponding to the initial and final images, the target time period for solid particles to pass through the observation tube segment is determined.

4. The method according to claim 1, characterized in that, Based on the target image for the target time period, and combined with the measurement data from the gas flow meter and electromagnetic flow meter, determine the test speed, target gas supply flow rate, and target liquid flow rate for each test condition, including: Based on the particle tracking method, the test velocity of solid particles is determined according to the changes of solid particles in each target image within the target time period. Determine the target gas flow rate collected by the gas flow meter and the target liquid flow rate collected by the electromagnetic flow meter within the target time period.

5. The method according to claim 1, characterized in that, Based on the test speed, target gas flow rate, and target liquid flow rate under each test condition, coefficients are fitted to the preset solid particle velocity equation to determine the values ​​of the target coefficients, including: Substitute the test speed, target gas flow rate, and target liquid flow rate under each test condition into the preset solid particle velocity equation; The least squares method is used to solve the problem together to determine the values ​​of the target coefficients in the preset solid particle velocity equation.

6. A device for determining the velocity of solid particles, characterized in that, The device is configured in a monitoring platform, which is used for vertical pipeline gas-liquid-solid three-phase flow transportation. The device includes: The determination module is used to respond to the request to determine the velocity of solid particles, determine the test information of at least two sets of test conditions, and control the operation of each device in the monitoring platform according to the test information to determine the test velocity, target gas flow rate and target liquid flow rate under each set of test conditions. The fitting module is used to fit the coefficients of the preset solid particle velocity equation based on the test speed, target gas flow rate and target liquid flow rate under each test condition, so as to determine the value of the target coefficient. The module is used to construct a velocity determination formula for solid particles based on the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform can use the velocity determination formula to determine the actual velocity of solid particles. The test information includes the test pipe diameter, test particle size, and test inflation flow rate for each test condition; the determination module includes: The injection unit is used to add solid particles of the corresponding test particle size into the hopper according to the test information for each test condition, and to inject clean water into the delivery pipeline of the corresponding test diameter. The operating unit is used to sequentially control the operation of the centrifugal pump, air compressor, air filling pipeline ball valve, flow regulating valve, gas flow meter, silo valve and electromagnetic flow meter in the monitoring platform to transport solid particles to the observation section in the conveying pipeline, and at the same time start the measurement of the gas flow meter and electromagnetic flow meter. The acquisition unit is used to acquire images of the observation section in the delivery pipeline for a preset duration using a high-speed camera, determine the target image, and perform target detection on the target image to determine the target time period during which solid particles pass through the observation section. The determination unit is used to determine the test speed, target gas flow rate, and target liquid flow rate for each test condition based on the target image during the target time period and the measurement data from the gas flow meter and electromagnetic flow meter.

7. A monitoring platform, characterized in that, The monitoring platform is used for vertical pipeline gas-liquid-solid three-phase flow transportation, and also for implementing the method for determining the velocity of solid particles as described in any one of claims 1 to 5; The monitoring platform includes at least: an air compressor, an air filling pipeline, a gas flow meter, a centrifugal pump, a silo, a conveying pipeline, an electromagnetic flow meter, a high-speed camera, and a scale; The delivery pipeline includes horizontal pipe sections, bends, and vertical pipe sections; the vertical pipe sections include observation pipe sections; the liquid phase of the gas-liquid-solid three-phase flow flows sequentially through the horizontal pipe sections, bends, and vertical pipe sections. The air compressor is connected to the vertical pipeline through an air filling pipe and fills the vertical pipeline with air through the air filling pipe; the gas flow meter is installed on the air filling pipe to measure the gas flow rate; the electromagnetic flow meter is used for liquid phase flow measurement.

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