Method and device for determining speed of solid particles and monitoring platform

Abstract

The invention discloses a solid particle speed determination method, a solid particle speed determination device and a monitoring platform. The method comprises the following steps: the vertical pipeline gas-liquid-solid three-phase flow conveying monitoring platform determines test information of at least two groups of test working conditions in response to a solid particle speed determination request, and controls each device in the monitoring platform to operate according to the test information; determining a test speed, a target gas filling flow value and a target liquid phase flow under each group of test working conditions; according to the test speed, the target gas filling flow value and the target liquid phase flow under each group of test working conditions, coefficient fitting is carried out on a preset solid particle speed equation to determine the value of a target coefficient; and according to the value of the target coefficient and a preset solid particle velocity equation, constructing a velocity determination formula of the solid particles, so that the monitoring platform adopts the velocity determination formula to determine the velocity of the actual solid particles. A solid particle speed measurement formula can be rapidly constructed, and rapid and accurate measurement of the solid particle speed in practical application is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of deep-sea mining, and in particular to a method and device for determining the velocity of solid particles and a monitoring platform. Background Art

[0002] Measuring and predicting the velocity of solid particles in vertical hoisting systems for deep-sea mining is a key technology for ensuring mining efficiency and safety. Hydraulic-pneumatic hybrid conveying offers greater efficiency than purely hydraulic lifting methods in vertical pipelines and represents a promising production method. However, current measurement techniques struggle to accurately monitor the gas-liquid-solid three-phase flow of solid particles in vertical pipeline conveying systems for deep-sea mining, severely hindering the widespread adoption of this technology.

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

[0004] The present invention provides a method, device and monitoring platform for determining the velocity of solid particles, so as to quickly construct a solid particle velocity measurement formula, which is helpful for 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, which is performed by a monitoring platform used for gas-liquid-solid three-phase flow transportation in a vertical pipeline, the method comprising:

[0006] In response to a request to determine the solid particle velocity, determining test information for at least two groups 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 aeration flow rate, and target liquid phase flow rate under each group of test conditions;

[0007] According to the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions, the coefficient of the preset solid particle velocity equation is fitted to determine the value of the target coefficient;

[0008] According to 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 uses 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 is configured in a monitoring platform used for gas-liquid-solid three-phase flow transportation in a vertical pipeline, and the device comprises:

[0010] a determination module for determining, in response to a request for determining the solid particle velocity, test information for at least two groups 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 aeration flow rate, and target liquid phase flow rate under each group of test conditions;

[0011] The fitting module is used to perform coefficient fitting on the preset solid particle velocity equation according to the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions to determine the value of the target coefficient;

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

[0013] According to another aspect of the present invention, a monitoring platform is provided, the monitoring platform being used for gas-liquid-solid three-phase flow transportation in a vertical pipeline and being further used for executing the method for determining the velocity of solid particles according to any embodiment of the present invention;

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

[0015] The transmission pipeline includes a horizontal pipe section, a curved pipe section, and a vertical pipe section; the vertical pipe section includes an observation pipe section; the liquid phase of the gas-liquid-solid three-phase flow flows through the horizontal pipe section, the curved pipe section, and the vertical pipe section in sequence;

[0016] The air compressor is connected to the vertical pipeline through the inflation pipe and inflates the vertical pipeline through the inflation pipe; the gas flow meter is installed on the inflation pipe to measure the gas flow; the electromagnetic flow meter is used to measure the liquid flow.

[0017] According to another aspect of the present invention, an electronic device is provided, 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 executable by the at least one processor. The computer program is executed by the at least one processor to enable the at least one processor to perform the method for determining the velocity of solid particles according to any embodiment of the present invention.

[0021] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining the velocity of solid particles according to any embodiment of the present invention when executed.

[0022] According to another aspect of the present invention, a computer program product is provided. The computer program product includes a computer program. When the computer program is executed by a processor, the method for determining the velocity of solid particles according to any embodiment of the present invention is implemented.

[0023] According to the technical solution of an embodiment of the present invention, a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform determines test information of at least two groups of test conditions in response to a request for determining the solid particle velocity, and controls the operation of each device in the monitoring platform according to the test information to determine the test speed, target aeration flow value and target liquid phase flow under each group of test conditions; performs coefficient fitting on a preset solid particle velocity equation according to the test speed, target aeration flow value and target liquid phase flow under each group of test conditions to determine the value of the target coefficient; constructs a velocity determination formula for solid particles according to the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform uses the velocity determination formula to determine the actual velocity of solid particles, and determines the test speed, target aeration flow value and target liquid phase flow under different working conditions through testing, thereby quickly constructing a solid particle velocity measurement formula for the vertical pipeline gas-liquid-solid three-phase flow, which is helpful for rapid and accurate measurement of solid particle velocity in practical applications.

[0024] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

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

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

[0029] Figure 4 This is a structural block diagram of a device for determining the velocity of solid particles provided by the third embodiment of the present invention;

[0030] Figure 5 It is a structural diagram of an electronic device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", "target", "candidate", "alternative", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. 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 that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or devices. The acquisition, storage, use, processing, etc. of data in the technical solution of this application comply with the relevant provisions of laws and regulations.

[0033] Example 1

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

[0035] S101. In response to a request to determine the solid particle velocity, determine test information for at least two groups of test conditions, and control the operation of each device in the monitoring platform based on the test information to determine the test velocity, target aeration flow rate value, and target liquid phase flow rate under each group of test conditions.

[0036] A determination request refers to a request to measure the velocity of solid particles transported from a monitoring platform to an observation section of a vertical pipeline in a gas-liquid-solid three-phase flow scenario. A test condition is a preset condition that tests the relationship between solid particle velocity, aeration flow rate, and liquid phase flow rate. Different test conditions can correspond to different test pipe diameters, test particle sizes, and test aeration flow rates.

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

[0038] The test velocity refers to the solid particle velocity measured under the corresponding test conditions, the target aeration flow rate refers to the aeration flow rate measured by the gas flowmeter under the corresponding test conditions, and the target liquid phase flow rate refers to the liquid phase flow rate measured by the electromagnetic flowmeter under the corresponding test conditions.

[0039] For example, different test conditions and corresponding test information can be shown in Table 1 below, where the test aeration flow rates of 1, 2, 3, 4, and 5 indicate that when the test tube diameter and the test particle size are fixed, the aeration flow rates are increased in sequence based on 1×10-3m3 / s, 2×10-3m3 / s, 3×10-3m3 / s, 4×10-3m3 / s, and 5×10-3m3 / s to test the solid particle velocity under different working 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 set of test conditions, including:

[0043] 1) For each set of test conditions, add solid particles of the corresponding test particle size into the silo according to the test information, and inject clean water into the delivery pipeline of the corresponding test diameter;

[0044] Optionally, before controlling the operation of each device in the monitoring platform so that it is in the corresponding test condition, that is, the initial state of the monitoring platform is that the silo gate valve and the inflation pipe ball valve are in the closed state. For example, if the test condition is set to a test pipe diameter of 0.1m and a test particle size of 0.01m, then the relevant personnel can be instructed to use a delivery pipe with the corresponding test pipe diameter to build the monitoring platform, further add solid particles with a diameter of 0.01m into the silo, and inject clean water into the delivery pipe with a diameter of 0.1m;

[0045] 2) Control the centrifugal pump, air compressor, inflation pipe ball valve, flow control valve, gas flow meter, silo valve, and electromagnetic flow meter in the monitoring platform to transport solid particles to the observation pipe section in the conveying pipeline, and simultaneously start the measurement of the gas flow meter and electromagnetic flow meter;

[0046] Optionally, the centrifugal pump, air compressor, inflation pipe ball valve, flow regulating valve, gas flow meter, silo valve and electromagnetic flow meter in the monitoring platform are controlled to operate in sequence to transport solid particles to the observation pipe section in the conveying pipeline, including: controlling the centrifugal pump, air compressor, inflation pipe ball valve and flow regulating valve to perform inflation operation, and starting the aeration flow value measurement based on the gas flow meter; when the gas flow meter detects that the test inflation flow is 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 transmission pipeline includes a horizontal pipe section, a curved pipe section and a vertical pipe section; the vertical pipe section includes an observation pipe section; the liquid phase of the gas-liquid-solid three-phase flow flows through the horizontal pipe section, the curved pipe section and the vertical pipe section in sequence.

[0048] Optionally, the centrifugal pump can be started to make the clean water in the delivery pipeline run at a certain speed, and the air compressor can be further turned on, the inflation pipeline ball valve can be opened, and the flow regulating valve opening can be adjusted to perform the inflation operation, and at the same time, the gas flow meter can be used to start the gas flow value measurement.

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

[0050] 3) Use a high-speed camera to capture images of the observation pipe section in the conveying pipeline for a preset time, 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 pipe section;

[0051] Optionally, target detection is performed on the target image to determine a target time period for solid particles to pass through the observation pipe segment, including: performing target detection processing on the target image to determine an initial image in the target image representing the appearance of solid particles in the observation pipe segment and a final image representing the transport of all solid particles in the observation pipe segment; and determining the target time period for solid particles to pass through the observation pipe segment based on the acquisition moments corresponding to the initial image and the final image.

[0052] The initial image is the image captured when the first solid particle appears in the observation segment, and the final image is the image captured when the last solid particle leaves the observation segment. The target time period is the time period from when all solid particles enter the observation segment to when all solid particles pass through it.

[0053] Optionally, the acquisition time corresponding to the initial image may be used as the start time of the target time period, and the acquisition time corresponding to the final image may 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 pipe section, the moment recorded by the high-speed camera is T1. The silo valve can be closed after running for 2 minutes. When the last solid particle leaves the observation pipe section, the moment is T2. Then T1 to T2 is the target time period corresponding to the test condition.

[0055] 4) Based on the target image in the target time period and combined with the measurement data of the gas flowmeter and electromagnetic flowmeter, determine the test speed, target gas flow rate value, and target liquid phase flow rate under each set of test conditions.

[0056] Optionally, based on the target image in the target time period and combined with the measurement data of the gas flowmeter and the electromagnetic flowmeter, the test speed, target aeration flow value and target liquid phase flow rate under each set of test conditions are determined, including: based on the particle tracking method, according to the changes of solid particles in each target image in the target time period, determining the target aeration flow value collected by the gas flowmeter and the target liquid phase flow rate collected by the electromagnetic flowmeter in the target time period.

[0057] Among them, particle tracking is a numerical method that calculates the motion trajectory of each particle in the system by solving the kinematic equation of the position changing with time.

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

[0059] Optionally, a coordinate system can be established based on an L-shaped ruler pre-configured next to the observation tube section 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 section in different image frames (the time difference between two adjacent frames is 1 / the frame rate of the high-speed camera) can be determined. Based on the displacement / time, the vertical velocity of the solid particles, that is, the test velocity of the solid particles, can be determined.

[0060] For example, after completing the measurement of the test speed, target aeration flow rate value and target liquid phase flow rate under the test conditions in the target time period from T1 to T2, the opening of the regulating flow valve on the inflation pipe can be further adjusted to make the inflation flow rate reach the set flow rate, open the silo valve, and then perform the operations of steps 3) and 4) above to determine the test speed, target aeration flow rate value and target liquid phase flow rate under the test conditions in the target time period from T3 to T4, thereby obtaining the test speed, target aeration flow rate value and target liquid phase flow rate under the same test pipe diameter, the same test particle size and different test inflation flow rates.

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

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

[0063] S102. According to the test speed, target aeration flow rate, and target liquid phase flow rate under each set of test conditions, coefficient fitting is performed 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, and the preset solid particle velocity equation refers to the preset equation that characterizes the correlation between the solid particle velocity and the target aeration flow rate value, the target liquid phase flow rate, the solid particle size and the diameter of the conveying pipeline.

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

[0066]

[0067] in, Indicates the solid particle velocity, the unit is m / s; k1, k2 and k3 are target coefficients, d is the solid particle size, D is the diameter of the conveying pipeline, the unit is m, Indicates the target gas flow rate value, in m 3 / h; Indicates the target liquid phase flow rate.

[0068] Optionally, coefficient fitting is performed on the preset solid particle velocity equation according to the test speed, target aeration flow value and target liquid phase flow rate under each set of test conditions to determine the value of the target coefficient, including: substituting the test speed, target aeration flow value and target liquid phase flow rate under each set of test conditions into the preset solid particle velocity equation respectively; and performing a joint solution based on the least squares method to determine the value of the target coefficient in the preset solid particle velocity equation.

[0069] Optionally, after substituting the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions into the preset solid particle velocity equation, the data can be further fitted based on the least squares method, that is, by finding a function (such as a straight line) that minimizes the sum of squares of the residuals between the velocity prediction value and the velocity measurement value, to obtain the values ​​of k1, k2 and k3 in the preset solid particle velocity equation.

[0070] S103 . Construct a solid particle velocity determination formula based on the target coefficient value and a preset solid particle velocity equation, so that the monitoring platform uses the velocity determination formula to determine the actual solid particle velocity.

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

[0072] According to the technical solution of an embodiment of the present invention, a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform determines test information of at least two groups of test conditions in response to a request for determining the solid particle velocity, and controls the operation of each device in the monitoring platform according to the test information to determine the test speed, target aeration flow value and target liquid phase flow under each group of test conditions; performs coefficient fitting on a preset solid particle velocity equation according to the test speed, target aeration flow value and target liquid phase flow under each group of test conditions to determine the value of the target coefficient; constructs a velocity determination formula for solid particles according to the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform uses the velocity determination formula to determine the actual velocity of solid particles, and determines the test speed, target aeration flow value and target liquid phase flow under different working conditions through testing, thereby quickly constructing a solid particle velocity measurement formula for the vertical pipeline gas-liquid-solid three-phase flow, which is helpful for rapid and accurate measurement of solid particle velocity in practical applications.

[0073] Example 2

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

[0075] Specifically, such as Figure 2 As shown, the monitoring platform may include at least: an air compressor, an air charging pipe, 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 transmission pipeline includes a horizontal pipe section, a curved pipe section and a vertical pipe section; the vertical pipe section includes an observation pipe section; the gas-liquid-solid three-phase flow flows through the horizontal pipe section, the curved pipe section and the vertical pipe section in sequence; Figure 3 As shown, the ruler can be configured on one side of the observation section (i.e., the observation tube section).

[0077] Optionally, a reducer is placed between the centrifugal pump and the electromagnetic flowmeter, a silo gate valve is located at the bottom of the silo, a flow control valve is located between the gas flowmeter and the air compressor, and a check valve, ball valve, and air charging hole are located between the gas flowmeter and the vertical pipe. The gas-liquid-solid three-phase flow flows sequentially through the horizontal pipe section, the curved pipe section, and the vertical pipe section before entering the storage tank.

[0078] Optionally, the air compressor is connected to the vertical pipeline through an inflation pipe and inflates air into the vertical pipeline through the inflation pipe; a gas flow meter is installed on the inflation pipe to measure the gas flow; and an electromagnetic flow meter is used to measure the liquid flow.

[0079] Optionally, the horizontal pipe section is connected to the vertical pipe section via a curved section, both made of stainless steel round tubes. The horizontal pipe section is connected to the outlet of the centrifugal pump via a reducer. The diameter of the reducer's opening on one end is the same as that of the horizontal pipe, and the diameter of the opening on the other end is the same as that of the centrifugal pump outlet. The observation pipe section is part of the vertical pipe section and has a square outer surface and a round inner surface. It is made of plexiglass, whose refractive index is the same as that of the liquid phase in 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 generally not less than 1 / 500 of the acquisition frequency of the high-speed camera, and is expressed in meters.

[0080] Optionally, the acquisition frequency of the high-speed camera is not less than 500 frames per second, and the viewing angle of the high-speed camera can cover the observation section; the ruler used is an L-shaped ruler, which is attached to the side of the observation tube where the high-speed camera is shooting.

[0081] Optionally, the silo outlet 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 adding point are both after the electromagnetic flowmeter, the medium in this section is a pure liquid phase fluid), ensuring the accuracy of the liquid phase flow measured by the electromagnetic flowmeter.

[0082] Optionally, the air compressor is connected to the vertical pipeline through the inflation pipe, and inflates the vertical pipeline through the inflation pipe; a gas flow meter is installed on the inflation pipe to measure the flow of gas; a flow regulating valve, a check valve and a ball valve are installed on the inflation pipe at the same time; the ball valve allows gas to pass when open and blocks inflation when closed; the check valve only allows gas to pass in one direction to prevent liquid from flowing back to the air compressor; the flow regulating valve controls the gas flow by 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 pipeline from the inflation point, to ensure that the multiphase flow in the vertical pipeline is fully developed and in a stable state; the solid-liquid-gas three-phase flow fluid passing through the conveying pipeline is finally 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 the third embodiment of the present invention; this embodiment can be applied to the situation where a monitoring platform tests parameters under different test conditions to perform coefficient fitting on a preset solid particle velocity equation to obtain a solid particle velocity determination formula, and the solid particle velocity determination device provided in the embodiment of the present invention can execute the solid particle velocity determination method provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method; the solid particle velocity determination device can be implemented in the form of hardware and / or software, and configured in an electronic device with a solid particle velocity determination function, and executed by a monitoring platform, which is used for vertical pipeline gas-liquid-solid three-phase flow transportation, such as Figure 4 As shown, the solid particle velocity determination device may specifically include:

[0086] Determination module 301 is configured to determine test information for at least two groups of test conditions in response to a request for determining the solid particle velocity, and control the operation of various devices in the monitoring platform based on the test information to determine the test velocity, target aeration flow rate, and target liquid phase flow rate under each group of test conditions;

[0087] The fitting module 302 is used to perform coefficient fitting on the preset solid particle velocity equation according to the test velocity, target aeration flow rate and target liquid phase flow rate under each set of test conditions to determine the value of the target coefficient;

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

[0089] According to the technical solution of an embodiment of the present invention, a vertical pipeline gas-liquid-solid three-phase flow transport monitoring platform determines test information of at least two groups of test conditions in response to a request for determining the solid particle velocity, and controls the operation of each device in the monitoring platform according to the test information to determine the test speed, target aeration flow value and target liquid phase flow under each group of test conditions; performs coefficient fitting on a preset solid particle velocity equation according to the test speed, target aeration flow value and target liquid phase flow under each group of test conditions to determine the value of the target coefficient; constructs a velocity determination formula for solid particles according to the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform uses the velocity determination formula to determine the actual velocity of solid particles, and determines the test speed, target aeration flow value and target liquid phase flow under different working conditions through testing, thereby quickly constructing a solid particle velocity measurement formula for the vertical pipeline gas-liquid-solid three-phase flow, which is helpful for 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 set of test conditions; the determination module 301 may include:

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

[0092] The operation unit is used to sequentially control the operation of the centrifugal pump, air compressor, inflation pipe ball valve, flow control valve, gas flow meter, silo valve and electromagnetic flow meter in the monitoring platform to transport solid particles to the observation pipe section in the conveying pipeline, and simultaneously start the measurement of the gas flow meter and electromagnetic flow meter;

[0093] An acquisition unit is used to use a high-speed camera to acquire images of a preset time period from an observation pipe section in the conveying pipeline, determine a target image, and perform target detection on the target image to determine a target time period for solid particles to pass through the observation pipe section;

[0094] The determination unit is used to determine the test speed, target gas flow rate value and target liquid phase flow rate under each set of test conditions based on the target image of the target time period and the measurement data of the gas flow meter and the electromagnetic flow meter.

[0095] Furthermore, the operation unit is specifically used to:

[0096] Control the centrifugal pump, air compressor, inflation pipe ball valve and flow control valve to perform inflation operation, and start the gas flow value measurement 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, and at the same time, the liquid phase flow measurement is started based on the electromagnetic flow meter.

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

[0099] Performing target detection processing on the target image to determine an initial image representing the presence of solid particles in the observation pipe section and a final image representing the transport of all solid particles out of the observation pipe section;

[0100] According to the acquisition moments corresponding to the initial image and the final image, the target time period for the solid particles to pass through the observation pipe section is determined.

[0101] Furthermore, the determination unit is specifically used for:

[0102] Based on the particle tracking method, the test speed 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 value collected by the gas flow meter and the target liquid phase flow rate collected by the electromagnetic flow meter within the target time period.

[0104] Furthermore, the fitting module 302 is specifically configured to:

[0105] Substitute the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions into the preset solid particle velocity equation;

[0106] A joint solution is performed based on the least squares method to determine the value of the target coefficient in the preset solid particle velocity equation.

[0107] Example 4

[0108] Figure 5 It is a structural diagram of an electronic device provided in Embodiment 4 of the present invention. Figure 5 A schematic diagram of an electronic device 10 that can be used to implement an embodiment 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 assistants, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

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

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

[0111] Processor 11 can be any general-purpose and / or specialized processing component 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 specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. Processor 11 executes 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 can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed 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 can be performed. Alternatively, in other embodiments, processor 11 can be configured to execute the solid particle velocity determination method in any other suitable manner (e.g., via 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), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0114] Computer programs for implementing 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 the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0115] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or apparatus. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, semiconductor systems, devices, or equipment, 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 may include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, 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 that has: 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 can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0117] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0118] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within a cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

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

[0120] The computer program product may be implemented by writing computer program code for performing the operations of the present invention in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​and conventional procedural programming languages. The program code may 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 the case of a remote computer, the remote computer may 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 may 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 the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0122] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for determining the velocity of solid particles, characterized in that: The method is performed by a monitoring platform used for gas-liquid-solid three-phase flow transportation in a vertical pipeline, and includes: In response to a request to determine the solid particle velocity, determining test information for at least two groups 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 aeration flow rate, and target liquid phase flow rate under each group of test conditions; According to the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions, the coefficient of the preset solid particle velocity equation is fitted to determine the value of the target coefficient; According to 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 uses the velocity determination formula to determine the actual velocity of solid particles.

2. The method according to claim 1, characterized in that in, The test information includes the test pipe diameter, test particle size and test inflation flow rate corresponding to each set of test conditions; 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 value and target liquid phase flow rate under each set of test conditions, including: For each set of test conditions, solid particles of the corresponding test particle size are added to the silo according to the test information, and clean water is injected into the delivery pipeline of the corresponding test diameter; The centrifugal pump, air compressor, inflation pipe ball valve, flow control 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 pipe section in the conveying pipeline, and the gas flow meter and electromagnetic flow meter are started for measurement at the same time; A high-speed camera is used to capture images of a preset time period on the observation pipe section in the conveying pipeline, 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 pipe section; According to the target image in the target time period, combined with the measurement data of the gas flowmeter and the electromagnetic flowmeter, the test speed, target gas flow rate value and target liquid phase flow rate under each set of test conditions are determined.

3. The method according to claim 2, characterized in that The centrifugal pump, air compressor, inflation pipe ball valve, flow control 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 pipe section in the conveying pipeline, including: Control the centrifugal pump, air compressor, inflation pipe ball valve and flow control valve to perform inflation operation, and start the gas filling flow value measurement 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, and at the same time, the liquid phase flow measurement is started based on the electromagnetic flow meter.

4. The method according to claim 2, characterized in that Perform target detection on the target image to determine the target time period when solid particles pass through the observation pipe segment, including: Performing target detection processing on the target image to determine an initial image representing the presence of solid particles in the observation pipe section and a final image representing the transport of all solid particles out of the observation pipe section; According to the acquisition moments corresponding to the initial image and the final image, the target time period for the solid particles to pass through the observation pipe section is determined.

5. The method according to claim 2, characterized in that Based on the target image in the target time period, combined with the measurement data of the gas flow meter and electromagnetic flow meter, the test speed, target gas flow rate value, and target liquid phase flow rate under each set of test conditions are determined, including: Based on the particle tracking method, the test speed 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 value collected by the gas flow meter and the target liquid phase flow rate collected by the electromagnetic flow meter within the target time period.

6. The method according to claim 1, characterized in that According to the test speed, target aeration flow rate and target liquid flow rate under each set of test conditions, the coefficient of the preset solid particle velocity equation is fitted to determine the value of the target coefficient, including: Substitute the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions into the preset solid particle velocity equation; A joint solution is performed based on the least squares method to determine the value of the target coefficient in the preset solid particle velocity equation.

7. 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: a determination module for determining, in response to a request for determining the solid particle velocity, test information for at least two groups 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 aeration flow rate, and target liquid phase flow rate under each group of test conditions; The fitting module is used to perform coefficient fitting on the preset solid particle velocity equation according to the test speed, target aeration flow rate and target liquid phase flow rate under each set of test conditions to determine the value of the target coefficient; The construction module is used to construct a solid particle velocity determination formula based on the value of the target coefficient and the preset solid particle velocity equation, so that the monitoring platform uses the velocity determination formula to determine the actual solid particle velocity.

8. A monitoring platform, characterized in that: The monitoring platform is used for gas-liquid-solid three-phase flow transportation in a vertical pipeline, and is also used to implement the method for determining the velocity of solid particles according to any one of claims 1 to 6; The monitoring platform includes at least: an air compressor, an air charging pipe, a gas flow meter, a centrifugal pump, a silo, a conveying pipeline, an electromagnetic flow meter, a high-speed camera and a ruler; The transmission pipeline includes a horizontal pipe section, a curved pipe section and a vertical pipe section; the vertical pipe section includes an observation pipe section; the liquid phase of the gas-liquid-solid three-phase flow flows through the horizontal pipe section, the curved pipe section and the vertical pipe section in sequence; The air compressor is connected to the vertical pipeline through the inflation pipe and inflates the vertical pipeline through the inflation pipe; the gas flow meter is installed on the inflation pipe to measure the gas flow; the electromagnetic flow meter is used to measure the liquid flow.

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