Flow measurement method and device, computer device and computer readable storage medium

Abstract

This application discloses a flow measurement method, apparatus, computer equipment, and computer-readable storage medium, relating to the field of measurement technology. It employs a combination of multiple flow meters and additional installation support to measure high-velocity gas media in large-diameter pipes, improving adaptability to operating conditions and enhancing measurement accuracy and precision. The method includes: acquiring a cross-sectional image of the pipeline containing the fluid to be measured, identifying multiple feature points; measuring each feature point using a target flow meter to obtain the unit flow velocity value of each feature point; determining multiple differential pressure transmitters and multiple pressure transmitters for each feature point; processing the multiple differential pressure values ​​and multiple pressure values ​​using a conversion algorithm to obtain the target differential pressure value and target pressure value for each feature point; and performing temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target differential pressure value, and target pressure value of each feature point to determine the actual flow rate.

Description

Technical Field

[0001] This application relates to the field of measurement technology, and in particular to a flow measurement method, apparatus, computer equipment, and computer-readable storage medium. Background Technology

[0002] With the rapid development of measurement technology, flow meters are increasingly used in fields such as energy metering, environmental protection, and transportation. Flow meters are instruments that measure flow rate by utilizing the principle of heat transfer, that is, by the heat exchange relationship between the flowing fluid and a heated object in the fluid or a heating element outside the measuring tube. They can be applied to the measurement of steam, liquid, and gaseous media in oil transportation and processing, chemical reaction mixing and proportioning, and the power industry.

[0003] In related technologies, for operating environments with large-diameter, high-speed flow, a fully inserted double-ended fixed flow meter is typically used to measure the fluid velocity under these conditions. However, the applicant recognizes that using a fully inserted double-ended fixed flow meter cannot guarantee strength, has low adaptability to high-velocity operating conditions, resulting in low measurement accuracy and precision. Furthermore, there is currently no large-size flow calibration device, making it impossible to measure the flow rate of gaseous media under these conditions, thus affecting the protection and control operation of the compressor. Summary of the Invention

[0004] In view of this, this application provides a flow measurement method, device, computer equipment, and computer-readable storage medium. The main purpose is to solve the problem that the strength of the fully plug-in double-ended fixed flow meter cannot guarantee the adaptability to high flow rate conditions, resulting in low measurement accuracy and low precision. Furthermore, there is currently no large-size flow calibration device, which makes it impossible to measure the flow rate of the gas medium under such conditions, affecting the protection and control operation of the compressor.

[0005] According to a first aspect of this application, a flow measurement method is provided, the method comprising: Acquire a cross-sectional image of the fluid pipeline under test, and determine multiple feature points in the cross-sectional image; The flow velocity at each feature point is measured using the target flow meter corresponding to each feature point to obtain the unit flow velocity value of each feature point; Based on a preset range, determine multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point, and use a conversion algorithm to process multiple differential pressure values ​​output by the multiple differential pressure transmitters and multiple pressure values ​​output by the multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each feature point. The temperature value of each feature point is obtained, and temperature and pressure compensation calculations are performed using the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point. The actual flow rate value of the fluid pipeline under test is determined using the actual unit flow velocity value of each feature point.

[0006] Optionally, determining multiple feature points in the cross-sectional image includes: Obtain a preset segmentation rule, and use the preset segmentation rule to divide the cross-sectional image of the fluid pipeline under test to obtain multiple test units; The center position of each unit under test is determined, and the center position of each unit under test is used as the feature point of each unit under test to obtain the plurality of feature points.

[0007] Optionally, the step of measuring the flow velocity at each feature point using the target flow meter corresponding to each feature point to obtain the unit flow velocity value at each feature point includes: For each feature point, the flow meter size information corresponding to the feature point is determined based on the distance between the feature point and the wall of the pipe containing the fluid to be measured, and the target flow meter corresponding to the feature point is determined using the flow meter size information; Obtain the parameter information of the target flow meter, determine the first material information of the target flow meter from the parameter information, and calculate the allowable stress value of the target flow meter using the first material information; Obtain the comprehensive stress value of the fluid pipeline under test, and compare the allowable stress value with the comprehensive stress value under test; If the allowable stress value is not greater than the comprehensive stress value under the working condition, then the preset installation support method is obtained, the first flow meter identifier corresponding to the target flow meter is determined, an installation reminder carrying the first flow meter identifier and the preset installation support method is generated, and the measurement personnel corresponding to the fluid pipeline to be tested are obtained. The installation reminder is pushed to the measurement personnel so that the measurement personnel can determine the target flow meter according to the first flow meter identifier and install the target flow meter according to the preset installation support method. When the installation feedback from the measurement personnel is received, the fluid velocity at the feature point is measured using the target flow meter to obtain the unit flow velocity value at the feature point; Each feature point is measured using the target flow meter corresponding to each feature point to obtain the unit flow velocity value of each feature point.

[0008] Optionally, the method further includes: The allowable stress of the target flow meter is calculated using the parameter information to obtain the flow meter stress value of the target flow meter; The frequency range value of the target flow meter is obtained, and fatigue analysis is performed on the target flow meter using the flow meter stress value and the frequency range value to obtain fatigue analysis results. The fatigue analysis results include the adaptability value of the target flow meter to the working conditions. Obtain a preset adaptation standard, and use the fatigue analysis results to calibrate the target flow meter; If the fatigue analysis results indicate that the adaptability value of the target flow meter to the working condition is lower than the preset adaptability standard, then one flow meter is selected as a backup flow meter from among the multiple flow meters corresponding to the flow meter size information. The material information of the backup flow meter is different from that of the target flow meter. The system determines the second flow meter identifier corresponding to the backup flow meter, generates a replacement reminder carrying the second flow meter identifier, and pushes the replacement reminder to the measurement personnel so that the measurement personnel can determine the backup flow meter based on the second flow meter identifier and replace the target flow meter with the backup flow meter.

[0009] Optionally, the step of determining multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point according to a preset range, and processing the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters using a conversion algorithm to obtain the target differential pressure value and target pressure value corresponding to each feature point, includes: Obtain the first flow range value of the fluid in the pipeline to be tested, obtain the fluid data information of each feature point, and calculate the operating condition value of each feature point using the fluid data information of each feature point; For each feature point, the preset range corresponding to the feature point is determined by calculation using the first flow range value and the operating condition value of the feature point. The preset range includes a first differential pressure range and a first pressure range. Select a plurality of differential pressure transmitters whose first transmitter range value is within the first differential pressure range, and select a plurality of pressure transmitters whose second transmitter range value is within the second differential pressure range. Each differential pressure transmitter has a corresponding first transmitter range value, and each pressure transmitter has a corresponding second transmitter range value. The differential pressure at the feature point is measured using the multiple differential pressure transmitters to obtain multiple differential pressure values, and the medium pressure at the feature point is measured using the multiple pressure transmitters to obtain multiple pressure values. The conversion algorithm is obtained, the conversion algorithm is used to calculate the plurality of differential pressure values, and the target differential pressure value is determined from the plurality of differential pressure values ​​based on the first conversion result obtained from the calculation; The multiple pressure values ​​are calculated using the aforementioned conversion algorithm, and a target pressure value is determined from the multiple pressure values ​​based on the calculated second conversion result. The multiple differential pressure values ​​and multiple pressure values ​​corresponding to each feature point are processed using the conversion algorithm to obtain the target differential pressure value and the target pressure value corresponding to each feature point.

[0010] Optionally, the step of using the plurality of differential pressure transmitters to measure the differential pressure at the feature point to obtain a plurality of differential pressure values, and using the plurality of pressure transmitters to measure the medium pressure at the feature point to obtain a plurality of pressure values, includes: Obtain the first transmitter identifier corresponding to each differential pressure transmitter among the plurality of differential pressure transmitters to obtain a plurality of first transmitter identifiers; and obtain the second transmitter identifier of each pressure transmitter among the plurality of pressure transmitters to obtain a plurality of second transmitter identifiers. Generate a setup reminder carrying the identifiers of the plurality of first transmitters and the identifiers of the plurality of second transmitters; The measurement personnel corresponding to the fluid pipeline under test are obtained, and the setting reminder is pushed to the measurement personnel so that the measurement personnel can identify the multiple differential pressure transmitters and the multiple pressure transmitters according to the multiple first transmitter identifiers and the multiple second transmitter identifiers, and connect the multiple differential pressure transmitters and the multiple pressure transmitters to the target flow meter; When the setting feedback is received from the measurement personnel, the plurality of differential pressure values ​​output by the plurality of differential pressure transmitters and the plurality of pressure values ​​output by the plurality of pressure transmitters are acquired.

[0011] Optionally, determining the actual flow rate of the fluid pipe under test using the actual unit flow velocity value of each feature point includes: Obtain multiple test units obtained by dividing the cross-sectional image, and calculate the area value of each test unit; The area value of each test unit and the actual unit flow velocity value of the corresponding feature point of each test unit are multiplied to obtain multiple first flow values ​​of the multiple test units; The actual flow rate of the fluid in the pipeline under test is obtained by summing the multiple first flow rate values.

[0012] According to a second aspect of this application, a flow measurement device is provided, the device comprising: The determination module is used to acquire a cross-sectional image of the fluid pipeline under test, and to determine multiple feature points in the cross-sectional image; The measurement module is used to measure the flow velocity of each feature point using the target flow meter corresponding to each feature point, and to obtain the unit flow velocity value of each feature point. The processing module is used to determine multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point according to a preset range, and to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters using a conversion algorithm to obtain the target differential pressure value and the target pressure value corresponding to each feature point. The calculation module is used to obtain the temperature value of each feature point, perform temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point, and determine the actual flow rate value of the fluid pipeline under test using the actual unit flow velocity value of each feature point.

[0013] Optionally, the determining module is used to acquire a preset segmentation rule, and to perform a segmentation operation on the cross-sectional image of the fluid pipeline to be tested using the preset segmentation rule to obtain multiple test units; determine the center position of each test unit, and use the center position of each test unit as the feature point of each test unit to obtain the multiple feature points.

[0014] Optionally, the measurement module is configured to, for each feature point, determine the flow meter size information corresponding to the feature point based on the distance between the feature point and the wall of the fluid pipe to be measured, and determine the target flow meter corresponding to the feature point using the flow meter size information; acquire parameter information of the target flow meter, determine the first material information of the target flow meter in the parameter information, and calculate the allowable stress value of the target flow meter using the first material information; acquire the comprehensive stress value of the fluid pipe under operating conditions, and compare the allowable stress value with the comprehensive stress value under operating conditions; if the allowable stress value is not greater than the comprehensive stress value under operating conditions, acquire the preset installation support method and determine the... The system generates an installation reminder carrying the first flow meter identifier, the preset installation support method, and the measurement personnel corresponding to the fluid pipeline under test. The installation reminder is then pushed to the measurement personnel so that they can identify the target flow meter based on the first flow meter identifier and install it according to the preset installation support method. When installation feedback is received from the measurement personnel, the system measures the fluid velocity at the feature point using the target flow meter to obtain the unit velocity value of the feature point. The system then measures each feature point using the target flow meter corresponding to each feature point to obtain the unit velocity value of each feature point.

[0015] Optionally, the device further includes: The verification module is used to calculate the allowable stress of the target flowmeter using the parameter information to obtain the flowmeter stress value of the target flowmeter; obtain the frequency range value of the target flowmeter, and perform fatigue analysis on the target flowmeter using the flowmeter stress value and the frequency range value to obtain fatigue analysis results, the fatigue analysis results including the adaptability value of the target flowmeter to the operating conditions; obtain a preset adaptability standard, and verify the target flowmeter using the fatigue analysis results; if the fatigue analysis results indicate that the adaptability value of the target flowmeter to the operating conditions is lower than the preset adaptability standard, then select a flowmeter as a backup flowmeter from multiple flowmeters corresponding to the flowmeter size information, the material information of the backup flowmeter is different from the material information of the target flowmeter; determine the second flowmeter identifier corresponding to the backup flowmeter, generate a replacement reminder carrying the second flowmeter identifier, and push the replacement reminder to the measurement personnel so that the measurement personnel can determine the backup flowmeter according to the second flowmeter identifier and replace the target flowmeter with the backup flowmeter.

[0016] Optionally, the processing module is configured to acquire a first flow range value of the fluid in the pipeline to be measured, acquire fluid data information of each feature point, and calculate the operating condition value of each feature point using the fluid data information of each feature point; for each feature point, calculate using the first flow range value and the operating condition value of the feature point to determine the preset range corresponding to the feature point, the preset range including a first differential pressure range and a first pressure range; select a plurality of differential pressure transmitters whose first transmitter range value is within the first differential pressure range, and select a plurality of pressure transmitters whose second transmitter range value is within the second differential pressure range, each differential pressure transmitter having a corresponding first transmitter range value, and each pressure transmitter having... There is a corresponding second transmitter range value; the differential pressure is measured at the feature point using the multiple differential pressure transmitters to obtain multiple differential pressure values, and the medium pressure is measured at the feature point using the multiple pressure transmitters to obtain multiple pressure values; the conversion algorithm is obtained, and the multiple differential pressure values ​​are calculated using the conversion algorithm, and a target differential pressure value is determined among the multiple differential pressure values ​​based on the first conversion result obtained from the calculation; the multiple pressure values ​​are calculated using the conversion algorithm, and a target pressure value is determined among the multiple pressure values ​​based on the second conversion result obtained from the calculation; the multiple differential pressure values ​​and multiple pressure values ​​corresponding to each feature point are processed using the conversion algorithm respectively to obtain the target differential pressure value and the target pressure value corresponding to each feature point.

[0017] Optionally, the processing module is further configured to: acquire a first transmitter identifier corresponding to each of the plurality of differential pressure transmitters to obtain a plurality of first transmitter identifiers; acquire a second transmitter identifier for each of the plurality of pressure transmitters to obtain a plurality of second transmitter identifiers; generate a setting reminder carrying the plurality of first transmitter identifiers and the plurality of second transmitter identifiers; acquire the measurement personnel corresponding to the fluid pipeline to be measured, and push the setting reminder to the measurement personnel so that the measurement personnel can determine the plurality of differential pressure transmitters and the plurality of pressure transmitters based on the plurality of first transmitter identifiers and the plurality of second transmitter identifiers, and connect the plurality of differential pressure transmitters and the plurality of pressure transmitters to the target flow meter; and acquire the plurality of differential pressure values ​​output by the plurality of differential pressure transmitters and the plurality of pressure values ​​output by the plurality of pressure transmitters when receiving setting feedback from the measurement personnel.

[0018] Optionally, the calculation module is used to acquire multiple test units obtained by dividing the cross-sectional image, calculate the area value of each test unit, multiply the area value of each test unit by the actual unit flow velocity value of the feature point corresponding to each test unit to obtain multiple first flow values ​​of the multiple test units, and sum the multiple first flow values ​​to obtain the actual flow value of the fluid pipe under test.

[0019] According to a third aspect of this application, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described in any of the first aspects above.

[0020] According to a fourth aspect of this application, a computer-readable storage medium is provided, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of the first aspects above.

[0021] By means of the above technical solution, this application provides a flow measurement method, device, computer equipment, and computer-readable storage medium. This application acquires a cross-sectional image of a pipeline containing the fluid to be measured, and determines multiple feature points in the cross-sectional image. It then uses a target flow meter corresponding to each feature point to measure the flow velocity at each feature point, obtaining the unit flow velocity value for each feature point. Based on a preset range, it determines multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point, and uses a conversion algorithm to calculate the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters. The process involves processing to obtain the target differential pressure and target pressure values ​​for each feature point, acquiring the temperature value for each feature point, and performing temperature and pressure compensation calculations using the unit flow velocity, temperature, target differential pressure, and target pressure values ​​for each feature point to obtain the actual unit flow velocity value for each feature point. The actual flow rate of the fluid pipeline under test is then determined using the actual unit flow velocity value for each feature point. By employing a combination of multiple flow meters and adding installation supports, the flow rate of gas media under high flow velocity conditions in large-diameter pipes is measured, improving adaptability to high flow velocity conditions and enhancing measurement accuracy and precision.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This paper illustrates a flowchart of a flow measurement method provided in an embodiment of this application. Figure 2A This paper illustrates a flowchart of a flow measurement method provided in an embodiment of this application. Figure 2B A schematic diagram of the architecture of a flow meter provided in an embodiment of this application is shown; Figure 2C This illustration shows a schematic diagram of a temperature and pressure compensation calculation process provided in an embodiment of this application; Figure 3A This illustration shows a schematic diagram of a flow measurement structure provided in an embodiment of this application; Figure 3B This illustration shows a schematic diagram of a flow measurement structure provided in an embodiment of this application; Figure 4 A schematic diagram of the device structure of a computer device provided in an embodiment of this application is shown. Detailed Implementation

[0024] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0025] This application provides a flow measurement method, such as... Figure 1 As shown, the method includes: 101. Obtain a cross-sectional image of the fluid pipeline to be tested, and determine multiple feature points in the cross-sectional image.

[0026] Currently, for large-diameter pipe applications, fully inserted double-ended fixed flow meters are typically used for flow measurement. However, under high flow velocity conditions, the strength of fully inserted flow meters is often insufficient, and there are currently no large-size flow calibration devices available in China. This results in the inability to measure the flow rate of gaseous media under these conditions, which also affects the protection and control of the compressor.

[0027] To address this issue, this application proposes a flow measurement method that employs a combination of multiple flow meters and additional installation supports to measure the flow rate of gaseous media under high-velocity conditions in large-diameter pipes, thereby improving the flow meter's adaptability to high-velocity conditions. The implementing entity of this application can be a flow measurement system. This system relies on the computing power of a server to provide services to users. The server can be a standalone server or a server providing basic cloud computing services such as cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and artificial intelligence platforms, enabling accurate and efficient measurement of gaseous media flow rates through the flow measurement system.

[0028] Since a Pitot tube flowmeter can only measure the velocity at a single point in the flow field, and the actual velocity of fluid flowing in a pipe varies at different points on the same cross-section, this application, in order to accurately measure the flow rate, divides the large-diameter pipe cross-section into multiple equal-area units, and then inserts a Pitot tube flowmeter at the center of each unit area for flow measurement. The flowmeter device can consist of a flowmeter group, a differential pressure transmitter, and a conversion processing module. The conversion processing module processes the data measured by the flowmeter group and the differential pressure transmitter to obtain the actual flow rate of the medium in the pipe, thus achieving flow monitoring. In this embodiment, the flow measurement system acquires a cross-sectional image of the pipe containing the fluid to be measured and determines multiple feature points in the cross-sectional image. These feature points are determined based on the center position of the unit area. In this way, even when dealing with fluid in a large-diameter pipe, flow measurement can be performed using multiple determined feature points, avoiding errors in the measurement results caused by different flow velocities at different locations within the large-diameter pipe.

[0029] 102. Measure the flow velocity at each feature point using the target flow meter corresponding to each feature point to obtain the unit flow velocity value at each feature point.

[0030] After identifying multiple feature points, this application allows for the selection of pitot tube flow meters of appropriate sizes based on their locations. This effectively combines multiple pitot tube flow meters into a single averaging pitot tube flow meter, enabling more accurate flow measurement. In this embodiment, the flow measurement system uses the target flow meter corresponding to each feature point to measure the flow velocity at each point, obtaining the unit flow velocity value for each feature point. For high-velocity applications, this application considers both the material of the individual pitot tube flow meter and its installation support, selecting a flow meter for each feature point to ensure the flow meter's strength at high flow velocities while simultaneously achieving flow measurement in large-diameter, high-velocity pipes.

[0031] 103. Determine the multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point according to the preset range, and process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters using a conversion algorithm to obtain the target differential pressure value and target pressure value corresponding to each feature point.

[0032] During the flow measurement process, the pressure difference at different locations in the flow field can cause deviations in the measurement results. Therefore, to improve the accuracy of the measurement, this application employs multiple differential pressure transmitters and pressure transmitters with different ranges. In this embodiment, the flow measurement system determines multiple differential pressure transmitters and multiple pressure transmitters corresponding to each characteristic point based on a preset range. Next, the flow measurement system uses a conversion algorithm to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each characteristic point. The conversion algorithm can determine the differential pressure value or pressure value with the smallest error by calculating multiple differential pressure values ​​or multiple pressure values, so that the actual flow rate of the fluid pipeline under test can be calculated accurately and quickly.

[0033] 104. Obtain the temperature value of each feature point, and use the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to perform temperature and pressure compensation calculations to obtain the actual unit flow velocity value of each feature point, and use the actual unit flow velocity value of each feature point to determine the actual flow rate value of the fluid pipeline to be measured.

[0034] Since the density of a medium changes with temperature, it can affect the measurement of the fluid flow. Therefore, to offset the effects of temperature and pressure variations, this application performs temperature and pressure compensation calculations on the measured flow velocity, making the result closer to the actual flow rate. In this embodiment, the flow measurement system acquires the temperature value of each feature point and performs temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point. Then, the flow measurement system uses the actual unit flow velocity value of each feature point to determine the actual flow rate of the fluid pipeline under test. That is, the calculated actual unit flow velocity value of each feature point is used as the average flow velocity of each area unit, and the actual flow rate of the entire fluid pipeline under test is calculated based on the area of ​​each area unit. This not only enables flow measurement of media with large diameters but also corrects for the effects of temperature and pressure on the measurement results, improving the accuracy of the measurement.

[0035] The method provided in this application embodiment acquires a cross-sectional image of the fluid pipeline under test, and determines multiple feature points in the cross-sectional image. It then uses a target flow meter corresponding to each feature point to measure the flow velocity at each feature point, obtaining the unit flow velocity value for each feature point. Based on a preset range, it determines multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point. A conversion algorithm is used to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each feature point. The method also acquires the temperature value of each feature point, and performs temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target differential pressure value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point. Finally, it uses the actual unit flow velocity value of each feature point to determine the actual flow rate of the fluid pipeline under test. By employing a combination of multiple flow meters and adding installation supports, the method measures the flow rate of gas media under high flow velocity conditions in large-diameter pipes, improving adaptability to high flow velocity conditions and enhancing measurement accuracy and precision.

[0036] Furthermore, as a refinement and extension of the specific implementation methods of the above embodiments, and in order to fully illustrate the specific implementation process of this embodiment, this application provides another flow measurement method, such as... Figure 2A As shown, the method includes: 201. Obtain a cross-sectional image of the fluid pipeline to be tested, and determine multiple feature points in the cross-sectional image.

[0037] Because a Pitot tube flowmeter can only measure the velocity at a single point in the flow field, it cannot accurately measure the flow rate of gaseous media under high-velocity conditions in large-diameter pipes. Therefore, this application measures the flow rate at multiple locations within the pipe and then calculates the overall flow rate of the pipe based on these multiple values. In this embodiment, the flow measurement system acquires a preset segmentation rule, which is based on the principle of equal area. Next, the flow measurement system uses the preset segmentation rule to divide the cross-sectional image of the pipe containing the fluid under test, obtaining multiple measurement units. The flow measurement system divides the cross-section of the pipe into multiple measurement units of equal area according to the principle of equal area to determine the location of feature points. It should be noted that the number of measurement units obtained using the preset segmentation rule can be set using existing flow calibration devices based on the longest-sized flowmeter. Then, the flow measurement system determines the center position of each measurement unit and uses the center position of each measurement unit as its feature point, obtaining multiple feature points. By determining these feature points, the flow measurement system can determine the location of the flowmeter and measure the flow rate of gaseous media under high-velocity conditions in large-diameter pipes.

[0038] 202. Measure the flow velocity at each feature point using the target flow meter corresponding to each feature point to obtain the unit flow velocity value at each feature point.

[0039] To ensure the strength of the flowmeter, this application sets Pitot tube flowmeters at the feature points, combining multiple Pitot tubes into a single averaging pitot tube flowmeter. These multiple Pitot tube flowmeters can be calibrated separately in a calibration device, solving the problem of large-size flowmeters being uncalibrable. In this embodiment, for each feature point, the flow measurement system determines the flowmeter size information corresponding to the feature point based on the distance between the feature point and the wall of the fluid pipe, and uses the flowmeter size information to determine the target flowmeter corresponding to the feature point. Since each feature point is located at a different position in the fluid pipe, flowmeters of different sizes are needed to measure the flow rate at the feature point. Next, the flow measurement system acquires the parameter information of the target flowmeter, determines the first material information of the target flowmeter from the parameter information, and calculates the allowable stress value of the target flowmeter using the first material information. Considering the high-velocity operating conditions, it is necessary to ensure that the allowable stress of the flowmeter is greater than the comprehensive stress of the operating conditions. Therefore, this application calculates the allowable stress value based on the target flowmeter selected for each feature point. Subsequently, the flow measurement system acquires the comprehensive stress value of the pipeline under operating conditions and compares it with the allowable stress value.

[0040] If the allowable stress value is greater than the comprehensive stress value under operating conditions, it indicates that the allowable stress value of the target flowmeter material can adapt to the operating conditions, and no installation support is required. If the allowable stress value is not greater than the comprehensive stress value under operating conditions, it indicates that the allowable stress value of the target flowmeter material cannot adapt to the operating conditions, and the flow measurement system uses installation support to improve the adaptability of the target flowmeter and ensure strength under high flow velocities. Specifically, the flow measurement system obtains the preset installation support method and determines the first flowmeter identifier corresponding to the target flowmeter. The first flowmeter identifier is used to identify the target flowmeter. Next, the flow measurement system generates an installation reminder carrying the first flowmeter identifier and the preset installation support method, and obtains the measurement personnel corresponding to the fluid pipeline to be measured. Subsequently, the flow measurement system pushes the installation reminder to the measurement personnel so that they can identify the target flowmeter according to the first flowmeter identifier and install the target flowmeter according to the preset installation support method. The following describes the architecture of one type of flowmeter: like Figure 2B As shown, using the principle of equal area, the 4-meter pipe is divided into three equal area units, and flow meters 1, 2, and 3 are installed at the center of each equal area sector unit. The angle between flow meter 1 and the vertical line is 22.5 degrees, the angle between flow meter 2 and the vertical line is 45 degrees, and the angle between flow meter 3 and the vertical line is 67.5 degrees.

[0041] In this way, by installing supports to ensure that the allowable stress value of the target flowmeter is greater than the comprehensive stress value under operating conditions, the measurement accuracy of the target flowmeter can also be improved. It should be noted that, to improve measurement accuracy, two flowmeters can be installed at different positions at the center of each measured unit. Then, upon receiving installation feedback from the measurement personnel (i.e., successful installation), the flow measurement system will use the target flowmeters to measure the fluid velocity at the characteristic points, obtaining the unit velocity value of each characteristic point. Finally, the flow measurement system will use the target flowmeter corresponding to each characteristic point to measure each characteristic point, obtaining the unit velocity value of each characteristic point. Thus, the unit velocity value of each characteristic point is used as the characteristic point velocity of each measured unit, and the characteristic point velocity represents the average velocity of each measured unit, which is used for subsequent calculation of the flow rate of the fluid pipeline under test, improving the accuracy of flow measurement.

[0042] In an optional implementation, to ensure the adaptability of the flowmeter to various operating conditions, stress simulation studies can be conducted to verify the flowmeter's stress value, frequency range, and fatigue analysis, ensuring the flowmeter's strength under high flow velocities. Specifically, the flow measurement system calculates the allowable stress of the target flowmeter using parameter information, obtaining the target flowmeter's stress value. Next, the flow measurement system acquires the target flowmeter's frequency range value and performs fatigue analysis on the target flowmeter using the stress value and frequency range value, obtaining fatigue analysis results. These results include numerical values ​​indicating the target flowmeter's adaptability to operating conditions. Subsequently, the flow measurement system acquires a preset adaptation standard and verifies the target flowmeter using the fatigue analysis results.

[0043] If the fatigue analysis results indicate that the target flowmeter's adaptability to the operating conditions is lower than the preset adaptability standard, it means that the target flowmeter's strength is insufficient at high flow rates. In this case, the flow measurement system selects a flowmeter as a backup flowmeter from among multiple flowmeters corresponding to the flowmeter size information. The backup flowmeter has a different material information than the target flowmeter; that is, a flowmeter with a higher allowable stress value is selected to improve its adaptability to the operating conditions. Then, the flow measurement system determines a second flowmeter identifier corresponding to the backup flowmeter. This second flowmeter identifier allows the measurement personnel to select the backup flowmeter determined by the flow measurement system. Finally, the flow measurement system generates a replacement reminder carrying the second flowmeter identifier and pushes the replacement reminder to the measurement personnel, enabling them to select the backup flowmeter based on the second flowmeter identifier and replace the target flowmeter with the backup flowmeter. If the fatigue analysis results indicate that the target flowmeter's adaptability to the operating conditions is not lower than the preset adaptability standard, it means that the target flowmeter has sufficient strength at high flow rates, and therefore, it does not need to be replaced. In this way, the strength of the flow meter can be guaranteed by both the material of the individual flow meter and the installation and support method, so that the flow meter can accurately measure under high flow velocity and large operating conditions.

[0044] 203. Determine the multiple differential pressure transmitters and multiple pressure transmitters corresponding to each characteristic point according to the preset range.

[0045] To minimize the impact of pressure during measurement, this application employs multiple differential pressure transmitters and pressure transmitters with different ranges for measurement, ensuring accurate measurement even when the flow range of the measured item is too wide. In this embodiment, the flow measurement system acquires a first flow range value of the fluid in the pipeline to be measured, where the first flow range value is the flow range of the measured item, so that the range of the differential pressure transmitter and pressure transmitter can be determined through subsequent calculations. Next, the flow measurement system acquires fluid data information for each feature point and uses the fluid data information of each feature point to calculate the operating condition value of each feature point. For each feature point, the flow measurement system uses the first flow range value and the operating condition value of the feature point to calculate and determine the preset range corresponding to the feature point, where the preset range includes a first differential pressure range and a first pressure range, where the first pressure range is the calculated range of the differential pressure transmitter and the first pressure range is the calculated range of the pressure transmitter. Subsequently, the flow measurement system selects multiple differential pressure transmitters whose range falls within the first differential pressure range. For example, three differential pressure transmitters are selected for differential pressure measurement of the throttling device, and these three transmitters represent three different ranges. Similarly, multiple pressure transmitters with ranges within the second differential pressure range are selected. For instance, if the measured medium pressure range is 5-350 kPa, which is too large, three pressure transmitters can be selected for medium pressure measurement. Each differential pressure transmitter has a corresponding first transmitter range, and each pressure transmitter has a corresponding second transmitter range. This combination of multiple differential pressure transmitters and multiple pressure transmitters improves the accuracy of flow measurement.

[0046] 204. Use multiple differential pressure transmitters to measure the differential pressure at the characteristic point to obtain multiple differential pressure values, and use multiple pressure transmitters to measure the medium pressure at the characteristic point to obtain multiple pressure values.

[0047] In this embodiment, the flow measurement system acquires a first transmitter identifier corresponding to each of the multiple differential pressure transmitters, resulting in multiple first transmitter identifiers, enabling the measurement personnel to identify the multiple differential pressure transmitters based on the first transmitter identifiers. Next, the flow measurement system acquires a second transmitter identifier for each of the multiple pressure transmitters, resulting in multiple second transmitter identifiers, enabling the measurement personnel to identify the multiple pressure transmitters based on the second transmitter identifiers. Subsequently, the flow measurement system generates a setup reminder carrying the multiple first transmitter identifiers and multiple second transmitter identifiers. The flow measurement system identifies the measurement personnel corresponding to the fluid pipeline under test and pushes the setup reminder to the measurement personnel, enabling the measurement personnel to identify the multiple differential pressure transmitters and multiple pressure transmitters based on the multiple first transmitter identifiers and multiple second transmitter identifiers, and connect the multiple differential pressure transmitters and multiple pressure transmitters to the target flow meter. For example, three differential pressure transmitters are connected in parallel on their high and low pressure sides and then connected to a balancing pressure stabilizing vessel, which in turn connects to the high and low pressure sides of the target flow meter. The differential pressure transmitters measure the differential pressure value after equalization of the high and low pressure sides of the target flow meter. Finally, when the measurement personnel receive setup feedback, it indicates that they have completed the settings for multiple differential pressure transmitters and multiple pressure transmitters. The flow measurement system then acquires multiple differential pressure values ​​from the differential pressure transmitters and multiple pressure values ​​from the pressure transmitters. In this way, by acquiring data from multiple differential pressure and pressure transmitters with different measurement ranges, the flow measurement system can reduce measurement errors and thus improve the accuracy of medium measurement.

[0048] 205. Using a conversion algorithm, process the multiple differential pressure values ​​output by multiple differential pressure transmitters and the multiple pressure values ​​output by multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each feature point.

[0049] In this embodiment, the flow measurement system acquires a conversion algorithm. This algorithm determines the target differential pressure or target pressure value output by the differential pressure transmitter or pressure transmitter with the most suitable range among multiple differential pressure or pressure values. Next, the flow measurement system uses the conversion algorithm to calculate the multiple differential pressure values ​​and determines the target differential pressure value based on the first conversion result. Subsequently, the flow measurement system uses the conversion algorithm to calculate the multiple pressure values ​​and determines the target pressure value based on the second conversion result. Finally, the flow measurement system processes the multiple differential pressure and multiple pressure values ​​corresponding to each feature point using the conversion algorithm to obtain the target differential pressure and target pressure value corresponding to each feature point. In this way, the flow measurement system implements a conversion algorithm through a program to select the differential pressure value output by the differential pressure transmitter with the most suitable range and the smallest error from multiple differential pressure transmitters. This differential pressure value is used as the target differential pressure value for subsequent flow calculation of the fluid pipeline under test. The target pressure value is calculated in the same way. In this way, the flow measurement system further improves the measurement accuracy by performing further calculations and selecting the target differential pressure value and target pressure value from multiple differential pressure values ​​and multiple pressure values.

[0050] 206. Obtain the temperature value of each feature point, and use the unit flow rate, temperature value, target pressure difference value, and target pressure value of each feature point to perform temperature and pressure compensation calculations to obtain the actual unit flow rate value of each feature point.

[0051] To offset the impact of temperature and pressure changes on medium flow measurement, this application incorporates temperature and pressure compensation during the flow measurement process, making the final flow value closer to the actual flow rate of the medium in the pipeline. In this embodiment, the flow measurement system acquires the temperature value at each feature point. Then, the flow measurement system uses the unit flow velocity, temperature, target pressure difference, and target pressure value at each feature point to perform temperature and pressure compensation calculations. The temperature and pressure compensation calculation process is described below: like Figure 2CAs shown, the flow measurement system acquires the temperature of the medium in the field, and the acquired temperature value is under a 4-20mA condition. Next, the flow measurement system acquires pressure values ​​1, 2, and 3 from three pressure transmitters. Using a three-in-one conversion module, it selects the output value of the pressure transmitter with the most suitable range as the target pressure value, and then unifies the target pressure value to a 4-20mA output. Subsequently, the flow measurement system acquires differential pressure values ​​1, 2, and 3 from three differential pressure transmitters. Using a three-in-one conversion module, it selects the output value of the differential pressure transmitter with the most suitable range as the target differential pressure value, and then unifies the target differential pressure value to a 4-20mA output. Finally, the flow measurement system uses the temperature value, target pressure value, and target differential pressure value to perform temperature and pressure compensation calculations and displays the temperature compensation results.

[0052] Thus, the actual unit flow velocity value for each characteristic point is obtained through the above temperature and pressure compensation calculation process. It should be noted that the flow measurement system can unify the temperature value, target differential pressure value, and target pressure value to a 4-20mA output for temperature and pressure compensation of the flow rate. This allows the influence of the flow meter on the measurement results to be corrected when the actual operating conditions deviate from the design conditions, making the measurement results closer to the true flow rate value.

[0053] 207. Determine the actual flow rate of the fluid in the pipeline under test by using the actual unit flow velocity value of each feature point.

[0054] In this embodiment, the flow measurement system acquires multiple test units obtained by dividing a cross-sectional image and calculates the area value of each test unit to facilitate subsequent flow velocity calculation for each test unit. Next, the flow measurement system multiplies the area value of each test unit with the actual unit flow velocity value of the corresponding feature point to obtain multiple first flow values ​​for the multiple test units. The actual unit flow velocity value of each feature point is used as the average flow velocity corresponding to each test unit. The average flow velocity multiplied by the area of ​​the corresponding test unit is the flow velocity through that test unit, i.e., the first flow value. Then, the flow measurement system sums the multiple first flow values, that is, it adds up the flow velocities of each test unit to obtain the actual flow value of the fluid in the test pipe. This allows for the measurement of gas medium flow under large-diameter, high-velocity conditions while ensuring the strength of the flow meter, improving adaptability to high-velocity conditions.

[0055] The method provided in this application embodiment acquires a cross-sectional image of the fluid pipeline under test, and determines multiple feature points in the cross-sectional image. It then uses a target flow meter corresponding to each feature point to measure the flow velocity at each feature point, obtaining the unit flow velocity value for each feature point. Based on a preset range, it determines multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point. A conversion algorithm is used to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each feature point. The method also acquires the temperature value of each feature point, and performs temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target differential pressure value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point. Finally, it uses the actual unit flow velocity value of each feature point to determine the actual flow rate of the fluid pipeline under test. By employing a combination of multiple flow meters and adding installation supports, the method measures the flow rate of gas media under high flow velocity conditions in large-diameter pipes, improving adaptability to high flow velocity conditions and enhancing measurement accuracy and precision.

[0056] Furthermore, as Figure 1 To specifically implement the method, this application provides a flow measurement device, such as... Figure 3A As shown, the device includes: a determination module 301, a measurement module 302, a processing module 303, and a calculation module 304.

[0057] The determination module 301 is used to acquire a cross-sectional image of the fluid pipeline under test, and to determine multiple feature points in the cross-sectional image; Measurement module 302 is used to measure the flow velocity of each feature point using the target flow meter corresponding to each feature point, and obtain the unit flow velocity value of each feature point; The processing module 303 is used to determine multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point according to a preset range, and to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters using a conversion algorithm to obtain the target differential pressure value and the target pressure value corresponding to each feature point. The calculation module 304 is used to obtain the temperature value of each feature point, perform temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point, and determine the actual flow rate value of the fluid pipeline under test using the actual unit flow velocity value of each feature point.

[0058] In a specific application scenario, the determining module 301 is used to obtain a preset segmentation rule, and to perform a segmentation operation on the cross-sectional image of the fluid pipeline to be tested using the preset segmentation rule to obtain multiple test units; to determine the center position of each test unit, and to use the center position of each test unit as the feature point of each test unit to obtain the multiple feature points.

[0059] In a specific application scenario, the measurement module 302 is used to determine the flow meter size information corresponding to each feature point based on the distance between the feature point and the wall of the fluid pipe to be measured, and to determine the target flow meter corresponding to the feature point using the flow meter size information; to obtain the parameter information of the target flow meter, to determine the first material information of the target flow meter in the parameter information, and to calculate the allowable stress value of the target flow meter using the first material information; to obtain the comprehensive stress value of the fluid pipe under operating conditions, and to compare the allowable stress value with the comprehensive stress value under operating conditions; if the allowable stress value is not greater than the comprehensive stress value under operating conditions, then a preset installation support method is obtained. The system determines the first flow meter identifier corresponding to the target flow meter, generates an installation reminder carrying the first flow meter identifier, the preset installation support method, and obtains the measurement personnel corresponding to the fluid pipeline to be tested. The installation reminder is then pushed to the measurement personnel so that they can identify the target flow meter based on the first flow meter identifier and install it according to the preset installation support method. When installation feedback is received from the measurement personnel, the fluid velocity at the feature point is measured using the target flow meter to obtain the unit velocity value of the feature point. Each feature point is then measured using the target flow meter corresponding to each feature point to obtain the unit velocity value of each feature point.

[0060] In specific application scenarios, such as Figure 3B As shown, the device also includes a verification module 305.

[0061] The verification module 305 is used to calculate the allowable stress of the target flowmeter using the parameter information to obtain the flowmeter stress value of the target flowmeter; obtain the frequency range value of the target flowmeter, and perform fatigue analysis on the target flowmeter using the flowmeter stress value and the frequency range value to obtain fatigue analysis results, the fatigue analysis results including the adaptability value of the target flowmeter to the operating conditions; obtain a preset adaptability standard, and verify the target flowmeter using the fatigue analysis results; if the fatigue analysis results indicate that the adaptability value of the target flowmeter to the operating conditions is lower than the preset adaptability standard, then select a flowmeter as a backup flowmeter from multiple flowmeters corresponding to the flowmeter size information, the material information of the backup flowmeter being different from the material information of the target flowmeter; determine the second flowmeter identifier corresponding to the backup flowmeter, generate a replacement reminder carrying the second flowmeter identifier, and push the replacement reminder to the measurement personnel so that the measurement personnel can determine the backup flowmeter based on the second flowmeter identifier and replace the target flowmeter with the backup flowmeter.

[0062] In a specific application scenario, the processing module 303 is used to acquire a first flow range value of the fluid in the pipeline to be measured, acquire fluid data information of each feature point, and calculate the operating condition value of each feature point using the fluid data information of each feature point; for each feature point, the first flow range value and the operating condition value of the feature point are used to calculate and determine the preset range corresponding to the feature point, the preset range including a first differential pressure range and a first pressure range; select a plurality of differential pressure transmitters whose first transmitter range value is within the first differential pressure range, and select a plurality of pressure transmitters whose second transmitter range value is within the second differential pressure range, each differential pressure transmitter having a corresponding first transmitter range value, and each pressure transmitter having a corresponding first transmitter range value. The transmitter has a corresponding second transmitter range value; the differential pressure is measured at the feature point using the plurality of differential pressure transmitters to obtain a plurality of differential pressure values, and the medium pressure is measured at the feature point using the plurality of pressure transmitters to obtain a plurality of pressure values; the conversion algorithm is obtained, and the plurality of differential pressure values ​​are calculated using the conversion algorithm, and a target differential pressure value is determined among the plurality of differential pressure values ​​based on the first conversion result obtained from the calculation; the plurality of pressure values ​​are calculated using the conversion algorithm, and a target pressure value is determined among the plurality of pressure values ​​based on the second conversion result obtained from the calculation; the plurality of differential pressure values ​​and the plurality of pressure values ​​corresponding to each feature point are processed using the conversion algorithm respectively to obtain the target differential pressure value and the target pressure value corresponding to each feature point.

[0063] In specific application scenarios, the processing module 303 is further configured to: acquire the first transmitter identifier corresponding to each of the plurality of differential pressure transmitters to obtain a plurality of first transmitter identifiers; acquire the second transmitter identifier of each of the plurality of pressure transmitters to obtain a plurality of second transmitter identifiers; generate a setting reminder carrying the plurality of first transmitter identifiers and the plurality of second transmitter identifiers; acquire the measurement personnel corresponding to the fluid pipeline to be measured, and push the setting reminder to the measurement personnel so that the measurement personnel can determine the plurality of differential pressure transmitters and the plurality of pressure transmitters based on the plurality of first transmitter identifiers and the plurality of second transmitter identifiers, and connect the plurality of differential pressure transmitters and the plurality of pressure transmitters to the target flow meter; and acquire the plurality of differential pressure values ​​output by the plurality of differential pressure transmitters and the plurality of pressure values ​​output by the plurality of pressure transmitters when receiving setting feedback from the measurement personnel.

[0064] In a specific application scenario, the calculation module 304 is used to acquire multiple test units obtained by dividing the cross-sectional image, calculate the area value of each test unit, multiply the area value of each test unit with the actual unit flow velocity value of the feature point corresponding to each test unit to obtain multiple first flow values ​​of the multiple test units, and sum the multiple first flow values ​​to obtain the actual flow value of the fluid pipe under test.

[0065] The apparatus provided in this application acquires a cross-sectional image of the fluid pipeline under test, and determines multiple feature points in the cross-sectional image. It then uses a target flow meter corresponding to each feature point to measure the flow velocity at each feature point, obtaining the unit flow velocity value for each feature point. Based on a preset range, it determines multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point. A conversion algorithm is used to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each feature point. The apparatus also acquires the temperature value of each feature point, and performs temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target differential pressure value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point. Finally, it uses the actual unit flow velocity value of each feature point to determine the actual flow rate of the fluid pipeline under test. By employing a combination of multiple flow meters and adding installation supports, it measures the flow rate of gas media under high flow velocity conditions in large-diameter pipes, improving adaptability to high flow velocity conditions and enhancing measurement accuracy and precision.

[0066] It should be noted that other corresponding descriptions of the functional units involved in the flow measurement device provided in this application embodiment can be found by referring to... Figure 1 and Figures 2A to 2CThe corresponding descriptions in [the document] will not be repeated here.

[0067] In an exemplary embodiment, see Figure 4 The invention also provides a computer device including a bus, a processor, a memory, and a communication interface. It may also include an input / output interface and a display device, wherein the various functional units can communicate with each other via the bus. The memory stores a computer program, and the processor executes the program stored in the memory to perform the flow measurement method described in the above embodiments.

[0068] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the flow measurement method.

[0069] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented in hardware or by using software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) and includes several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0070] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application.

[0071] Those skilled in the art will understand that the modules in the apparatus of the implementation scenario can be distributed within the apparatus of the implementation scenario as described, or they can be located in one or more apparatuses different from this implementation scenario, with corresponding changes. The modules of the above-described implementation scenario can be combined into one module, or they can be further divided into multiple sub-modules.

[0072] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of the implementation scenario.

[0073] The above disclosures are only a few specific implementation scenarios of this application. However, this application is not limited to these. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A flow measurement method, characterized in that, include: Acquire a cross-sectional image of the fluid pipeline under test, and determine multiple feature points in the cross-sectional image; The flow velocity at each feature point is measured using the target flow meter corresponding to each feature point to obtain the unit flow velocity value of each feature point; Based on a preset range, determine multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point, and use a conversion algorithm to process multiple differential pressure values ​​output by the multiple differential pressure transmitters and multiple pressure values ​​output by the multiple pressure transmitters to obtain the target differential pressure value and target pressure value corresponding to each feature point. The temperature value of each feature point is obtained, and temperature and pressure compensation calculations are performed using the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point. The actual flow rate value of the fluid pipeline under test is determined using the actual unit flow velocity value of each feature point.

2. The method according to claim 1, characterized in that, The determination of multiple feature points in the cross-sectional image includes: Obtain a preset segmentation rule, and use the preset segmentation rule to divide the cross-sectional image of the fluid pipeline under test to obtain multiple test units; The center position of each unit under test is determined, and the center position of each unit under test is used as the feature point of each unit under test to obtain the plurality of feature points.

3. The method according to claim 1, characterized in that, The step of measuring the flow velocity at each feature point using the target flow meter corresponding to each feature point to obtain the unit flow velocity value of each feature point includes: For each feature point, the flow meter size information corresponding to the feature point is determined based on the distance between the feature point and the wall of the pipe containing the fluid to be measured, and the target flow meter corresponding to the feature point is determined using the flow meter size information; Obtain the parameter information of the target flow meter, determine the first material information of the target flow meter from the parameter information, and calculate the allowable stress value of the target flow meter using the first material information; Obtain the comprehensive stress value of the fluid pipeline under test, and compare the allowable stress value with the comprehensive stress value under test; If the allowable stress value is not greater than the comprehensive stress value under the working condition, then the preset installation support method is obtained, the first flow meter identifier corresponding to the target flow meter is determined, an installation reminder carrying the first flow meter identifier and the preset installation support method is generated, and the measurement personnel corresponding to the fluid pipeline to be tested are obtained. The installation reminder is pushed to the measurement personnel so that the measurement personnel can determine the target flow meter according to the first flow meter identifier and install the target flow meter according to the preset installation support method. When the installation feedback from the measurement personnel is received, the fluid velocity at the feature point is measured using the target flow meter to obtain the unit flow velocity value at the feature point; Each feature point is measured using the target flow meter corresponding to each feature point to obtain the unit flow velocity value of each feature point.

4. The method according to claim 3, characterized in that, The method further includes: The allowable stress of the target flow meter is calculated using the parameter information to obtain the flow meter stress value of the target flow meter; The frequency range value of the target flow meter is obtained, and fatigue analysis is performed on the target flow meter using the flow meter stress value and the frequency range value to obtain fatigue analysis results. The fatigue analysis results include the adaptability value of the target flow meter to the working conditions. Obtain a preset adaptation standard, and use the fatigue analysis results to calibrate the target flow meter; If the fatigue analysis results indicate that the adaptability value of the target flow meter to the working condition is lower than the preset adaptability standard, then one flow meter is selected as a backup flow meter from among the multiple flow meters corresponding to the flow meter size information. The material information of the backup flow meter is different from that of the target flow meter. The system determines the second flow meter identifier corresponding to the backup flow meter, generates a replacement reminder carrying the second flow meter identifier, and pushes the replacement reminder to the measurement personnel so that the measurement personnel can determine the backup flow meter based on the second flow meter identifier and replace the target flow meter with the backup flow meter.

5. The method according to claim 1, characterized in that, The step of determining multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point according to a preset range, and processing the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters using a conversion algorithm to obtain the target differential pressure value and target pressure value corresponding to each feature point, includes: Obtain the first flow range value of the fluid in the pipeline to be tested, obtain the fluid data information of each feature point, and calculate the operating condition value of each feature point using the fluid data information of each feature point; For each feature point, the preset range corresponding to the feature point is determined by calculation using the first flow range value and the operating condition value of the feature point. The preset range includes a first differential pressure range and a first pressure range. Select a plurality of differential pressure transmitters whose first transmitter range value is within the first differential pressure range, and select a plurality of pressure transmitters whose second transmitter range value is within the second differential pressure range. Each differential pressure transmitter has a corresponding first transmitter range value, and each pressure transmitter has a corresponding second transmitter range value. The differential pressure at the feature point is measured using the multiple differential pressure transmitters to obtain multiple differential pressure values, and the medium pressure at the feature point is measured using the multiple pressure transmitters to obtain multiple pressure values. The conversion algorithm is obtained, the conversion algorithm is used to calculate the plurality of differential pressure values, and the target differential pressure value is determined from the plurality of differential pressure values ​​based on the first conversion result obtained from the calculation; The multiple pressure values ​​are calculated using the aforementioned conversion algorithm, and a target pressure value is determined from the multiple pressure values ​​based on the calculated second conversion result. The multiple differential pressure values ​​and multiple pressure values ​​corresponding to each feature point are processed using the conversion algorithm to obtain the target differential pressure value and the target pressure value corresponding to each feature point.

6. The method according to claim 5, characterized in that, The method of using the multiple differential pressure transmitters to measure the differential pressure at the feature point to obtain multiple differential pressure values, and using the multiple pressure transmitters to measure the medium pressure at the feature point to obtain multiple pressure values, includes: Obtain the first transmitter identifier corresponding to each differential pressure transmitter among the plurality of differential pressure transmitters to obtain a plurality of first transmitter identifiers; and obtain the second transmitter identifier of each pressure transmitter among the plurality of pressure transmitters to obtain a plurality of second transmitter identifiers. Generate a setup reminder carrying the identifiers of the plurality of first transmitters and the identifiers of the plurality of second transmitters; The measurement personnel corresponding to the fluid pipeline under test are obtained, and the setting reminder is pushed to the measurement personnel so that the measurement personnel can identify the multiple differential pressure transmitters and the multiple pressure transmitters according to the multiple first transmitter identifiers and the multiple second transmitter identifiers, and connect the multiple differential pressure transmitters and the multiple pressure transmitters to the target flow meter; When the setting feedback is received from the measurement personnel, the plurality of differential pressure values ​​output by the plurality of differential pressure transmitters and the plurality of pressure values ​​output by the plurality of pressure transmitters are acquired.

7. The method according to claim 1, characterized in that, The step of determining the actual flow rate of the fluid pipe under test using the actual unit flow velocity value of each feature point includes: Obtain multiple test units obtained by dividing the cross-sectional image, and calculate the area value of each test unit; The area value of each test unit and the actual unit flow velocity value of the corresponding feature point of each test unit are multiplied to obtain multiple first flow values ​​of the multiple test units; The actual flow rate of the fluid in the pipeline under test is obtained by summing the multiple first flow rate values.

8. A flow measurement device, characterized in that, include: The determination module is used to acquire a cross-sectional image of the fluid pipeline under test, and to determine multiple feature points in the cross-sectional image; The measurement module is used to measure the flow velocity of each feature point using the target flow meter corresponding to each feature point, and to obtain the unit flow velocity value of each feature point. The processing module is used to determine multiple differential pressure transmitters and multiple pressure transmitters corresponding to each feature point according to a preset range, and to process the multiple differential pressure values ​​output by the multiple differential pressure transmitters and the multiple pressure values ​​output by the multiple pressure transmitters using a conversion algorithm to obtain the target differential pressure value and the target pressure value corresponding to each feature point. The calculation module is used to obtain the temperature value of each feature point, perform temperature and pressure compensation calculations using the unit flow velocity value, temperature value, target pressure difference value, and target pressure value of each feature point to obtain the actual unit flow velocity value of each feature point, and determine the actual flow rate value of the fluid pipeline under test using the actual unit flow velocity value of each feature point.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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