Air duct air speed uniform point measuring system for thermal power generation

Abstract

The invention relates to the technical field of air duct air speed measurement, and discloses an air duct air speed uniform point measurement system for thermal power generation, the measurement system comprises an air volume measurement assembly, an air volume transmitter and a monitoring analysis unit, and the monitoring analysis unit comprises a pressure difference curve generator, an air speed error setting module, a pressure difference analysis module, a correction module and an alarm module. Compared with traditional fixed point measurement, the mode of dynamically capturing the wind speed data is adopted, measurement point arrangement is reduced to a great extent, and the complex and changeable wind speed distribution condition in the air duct can be reflected more truly; for example, in the areas where the wind speed is easy to change drastically, such as a curve and a bifurcation of an air duct, instant fluctuation of the wind speed can be captured in time through dynamic measurement, and richer and more accurate data samples are provided for subsequent data analysis. And a basis is conveniently provided for reasonably adjusting the position and the angle of the combustor by accurately positioning a wind speed uniform point, so that the fuel and the air are fully mixed, the power generation efficiency is improved, and the emission of pollutants is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind duct wind speed measurement, in particular to a wind duct wind speed uniform point measurement system for a non-uniform wind field, in particular to a wind duct wind speed uniform point measurement system for thermal power generation. Background Art

[0002] Commonly used air volume measurement devices include airfoil type, Venturi type, multi-throat type, matrix type, etc. At present, large air ducts in power plants are more likely to use multi-point matrix type air volume measurement devices. By arranging many measuring points in the measurement section, the cross-sectional wind speed is averaged indifferently, and the air volume in the air duct is calculated by the velocity-area method. However, the dense arrangement of measuring points leads to increased blockage. At the same time, due to the large diameter of the boiler air supply duct and the short straight pipe section, the complex structure of the internal support ribs and variable diameters seriously changes the flow velocity distribution in the air duct, making it impossible to accurately measure with traditional methods, and it is difficult to achieve the required accuracy and reliability. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a wind duct wind speed uniform point measurement system for thermal power generation, so as to reduce the arrangement of measurement points and more truly reflect the complex and changeable wind speed distribution in the wind duct.

[0004] A wind duct wind speed uniform point measurement system for thermal power generation, the measurement system comprising: An air volume measurement component, the air volume measurement component comprising a plurality of air volume flow meters arranged at a certain flow cross section of the air duct, and a driving unit for driving the air volume flow meters to dynamically capture wind speed data at any air duct load value at a plurality of measuring points of the air duct according to a preset measurement rule, wherein the preset measurement rule is: moving between two or more adjacent continuous measuring points according to a set displacement amount and a set displacement speed within a measurement period according to a set movement trajectory; An air volume transmitter is connected to the air volume measurement component, and is used to receive the wind speed data captured by the air volume measurement component at each measurement point and convert it into an air volume electrical signal corresponding to the measurement point, and generate a configuration file for saving the air volume electrical signal and the coordinate position of the measurement point corresponding thereto and the air duct load value; A monitoring and analysis unit, the monitoring and analysis unit includes a pressure difference curve generator, a wind speed error setting module and a pressure difference analysis module, the pressure difference curve generator is configured to: retrieve the coordinate positions of all measurement points under the same air duct load value and the corresponding wind volume electrical signals from the configuration file within any number of measurement cycles, and generate an air volume pressure difference measurement curve based on a neural network; the wind speed error setting module is configured to: set a standard wind difference range of the air volume pressure difference measurement curve corresponding to each air duct load value; the pressure difference analysis module is configured to: obtain the coordinate positions of all measurement points corresponding to the wind volume electrical signals within the standard wind difference range from at least two groups of the air volume pressure difference measurement curves, and use the measurement points whose frequency of occurrence of the same measurement points among all the obtained coordinate positions of the measurement points is greater than a preset frequency as the wind speed uniformity points of the air duct; The driving unit comprises: The supporting structure is provided with a plurality of mounting locations along the same axis direction, wherein the mounting locations are used to fix the air volume flow meter; A displacement structure is arranged at one side of the flow cross section of the air duct, wherein the displacement structure comprises an axially movable module and a radially movable module which move relative to each other, and the support structure is mounted on the axially movable module or the radially movable module; The control module is connected to the axial moving module and the radial moving module to control the axial moving module and the radial moving module to move according to a set moving track.

[0005] Optionally, a plurality of measuring points are arranged along a rectangular array within the flow cross-section of the air duct, and the coordinate positions of the plurality of measuring points are set in sequence along the radial and axial directions according to preset intervals, starting from the measuring point located at any corner of the rectangle.

[0006] Optionally, the set movement trajectory is configured as: moving in sequence along a trend of two adjacent or connected measurement points among the multiple measurement points in a broken line, triangle, circular ring or polygonal shape.

[0007] Optionally, the support structure is configured as a fixing rod of a hollow structure, a plurality of mounting holes are provided on the periphery of the fixing rod along its axial direction, and a wiring structure is provided on the periphery of the fixing rod at an air inlet side of the mounting holes away from the air duct.

[0008] Optionally, the duct load value is set to 35%-100% of the standard load value, and the air volume measurement component captures the wind speed data at the same measuring point in sequence within the same measurement cycle using any several different duct load values ​​as a set of test data.

[0009] Optionally, the wind speed error setting module includes: The operation submodule calculates the average wind speed measurement value of the air duct in the air volume pressure difference measurement curve diagram according to the set operation rules, and then calculates the standard wind difference range of the air volume pressure difference measurement curve diagram corresponding to each air duct load value based on the average wind speed measurement value of the air duct and superimposed with the set error allowable range; the set operation rule is: according to the sum of the air volume electrical signals of all the measuring points in the air volume pressure difference measurement curve diagram divided by the number of all the measuring points, the average wind speed measurement value of the air duct corresponding to the air duct load value is obtained; A setting submodule sets a unique identifier for the coordinate positions of all the measuring points within the standard wind difference range of the air volume pressure difference measurement curve diagram according to the standard wind difference range of the air volume pressure difference measurement curve diagram calculated by the operation submodule.

[0010] Optionally, the set allowable error range is lower than 2% of the average wind speed measurement value of the air duct.

[0011] Optionally, the pressure difference analysis module includes: An identification submodule, used for identifying the coordinate positions of all the measurement points set with unique identifiers from at least two groups of the air volume pressure difference measurement curve graphs; The comparison submodule is used to use the measurement points whose frequency of occurrence of the same measurement points among the coordinate positions of the measurement points identified by the identification submodule is greater than a preset frequency as the wind speed uniformity points of the air duct.

[0012] Optionally, the monitoring and analysis unit further includes a correction module, which is configured to: based on the number of wind speed uniform points of the air duct obtained by the pressure difference analysis module, and in accordance with a preset correction rule, adjust the standard wind difference range of the air volume pressure difference measurement curve in real time to adjust the number of wind speed uniform points of the air duct obtained by the pressure difference analysis module to a set value; The preset correction rule is: when the number of uniform wind speed points of the air duct obtained by the pressure difference analysis module is less than the set value, the set error allowable range is gradually adjusted in an increasing trend with a set unit amount, so that the standard wind difference range of the air volume pressure difference measurement curve diagram gradually increases until the number of uniform wind speed points of the air duct obtained by the pressure difference analysis module reaches the set value; when the number of uniform wind speed points of the air duct obtained by the pressure difference analysis module is greater than the set value, the set error allowable range is gradually adjusted in a decreasing trend with a set unit amount, so that the standard wind difference range of the air volume pressure difference measurement curve diagram gradually decreases until the number of uniform wind speed points of the air duct obtained by the pressure difference analysis module reaches the set value.

[0013] Optionally, the monitoring and analysis unit also includes an alarm module, which is connected to the pressure difference analysis module, and the alarm module issues a warning signal according to a preset alarm rule; the preset alarm rule is: within a set time period, if the number of uniform wind speed points in the air duct obtained by the pressure difference analysis module is inconsistent with the set value, a warning signal is issued to indicate that the measurement result is abnormal.

[0014] The beneficial effects that the present invention can produce include: The wind speed uniform point measurement system for wind duct used for thermal power generation provided by the present invention adopts the method of dynamically capturing wind speed data. Compared with the traditional fixed point measurement, the measurement system not only greatly reduces the arrangement of measurement points, but also can more truly reflect the complex and changeable wind speed distribution in the wind duct; such as in the bends and forks of the wind duct where the wind speed is prone to drastic changes, the dynamic measurement can timely capture the instantaneous fluctuation of the wind speed, and provide a richer and more accurate data sample for subsequent data analysis. At the same time, by accurately locating the wind speed uniform point, it is convenient to provide a basis for reasonably adjusting the position and angle of the burner, so that the fuel and air are fully mixed, more fully burned, improve power generation efficiency and reduce pollutant emissions. In addition, the air volume transmitter generates a configuration file with the collected wind speed data in a standardized format, which ensures the accuracy and stability of the data and provides a reliable basis for subsequent data analysis; and the monitoring and analysis unit uses a neural network algorithm and an intelligent analysis module to deeply explore the data value and realize accurate control and optimization of the wind speed in the wind duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the wind duct wind speed uniform point measurement system for thermal power generation of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the air volume measurement component; Figure 3 For the present invention Figure 1 A structural diagram of a wind speed error setting module; Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the pressure difference analysis module; Figure 5 For the present invention Figure 1 A schematic diagram of an air volume pressure difference measurement curve diagram generated by a pressure difference curve generator; Figure 6 For the present invention Figure 1 A set of data schematic diagrams of the configuration file of the air volume transmitter; In the figure: 1. air volume measurement component, 11. air volume flowmeter, 12. drive unit, 121. support structure, 122. axial movement module, 123. radial movement module, 124. mounting hole, 125. wiring structure, 126. control module, 2. air volume transmitter, 3. monitoring and analysis unit, 31. pressure difference curve generator, 32. wind speed error setting module, 321. operation submodule, 322. setting submodule, 33. pressure difference analysis module, 331. identification submodule, 332. comparison submodule, 34. correction module, 35. alarm module, 4. air duct. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 As shown, the present invention provides a wind speed uniform point measurement system for wind ducts used for thermal power generation. The measurement system is mainly composed of an air volume measurement component 1, an air volume transmitter 2, and a monitoring and analysis unit 3. Through the collaborative operation of each component, a complete and efficient measurement and analysis system is formed. Among them, the air volume measurement component 1, as the front-end sensing part of the system, is responsible for real-time collection of wind speed data in the wind duct 4; the air volume transmitter 2 converts these raw data into electrical signals that are easy to transmit and process, and performs preliminary sorting and storage; the monitoring and analysis unit 3 conducts in-depth mining and analysis of the collected wind speed data, thereby achieving accurate control and optimization of the wind speed in the wind duct 4, so as to accurately measure the wind speed in the wind duct 4, ensure power generation efficiency and stable operation of equipment, and avoid problems such as inadequate combustion, energy waste, and increased equipment wear caused by slight wind speed deviations.

[0018] In the above, if Figure 2As shown, the air volume measurement component 1 includes a plurality of air volume flowmeters 11 arranged at a certain flow section of the air duct 4, and a driving unit 12 that drives the air volume flowmeter 11 to dynamically capture the wind speed data under any air duct load value in multiple measuring points of the air duct 4 according to a preset measurement rule. The preset measurement rule is: according to the set movement trajectory, move between two or more adjacent continuous measurement points according to the set displacement and displacement speed within the measurement cycle to ensure full coverage and accurate measurement. It is worth noting that this dynamic measurement method can more truly reflect the complex and changeable wind speed distribution in the air duct 4 compared with the traditional fixed point measurement. For example, in areas such as bends and bifurcations of the air duct 4 where the wind speed is prone to drastic changes, dynamic measurement can capture the instantaneous fluctuations of the wind speed in time, providing richer and more accurate data samples for subsequent data analysis.

[0019] In the above, if Figure 1 and Figure 6 As shown, the air volume transmitter 2 is connected to the air volume measurement component 1, and is used to receive the wind speed data captured by the air volume measurement component 1 at each measurement point and convert it into the wind volume electrical signal of the corresponding measurement point. At the same time, the wind volume electrical signal and the coordinate position and duct load value of the corresponding measurement point are integrated to generate a configuration file and saved, providing original and accurate data support for subsequent data analysis. During the data transmission process, the air volume transmitter 2 adopts advanced anti-interference technology to ensure that the electrical signal can be stably transmitted in a complex electromagnetic environment to avoid data loss or distortion. In addition, the generation of the configuration file adopts a standardized data format, which is convenient for data interaction and sharing with other systems, and provides strong support for the intelligent management of thermal power generation enterprises.

[0020] In the above, if Figure 1As shown, the monitoring and analysis unit 3 includes a pressure difference curve generator 31, a wind speed error setting module 32, a pressure difference analysis module 33 and a correction module 34. The pressure difference curve generator 31 is configured to: retrieve the coordinate positions of all measurement points under the same air duct load value and the corresponding wind volume electrical signals from the configuration file within any number of measurement cycles, and generate an air volume pressure difference measurement curve based on the neural network; it should be noted that the neural network algorithm has powerful self-learning and adaptive capabilities, and can analyze and model a large amount of historical data, so as to accurately depict the air volume pressure difference at each measurement point to form an air volume pressure difference measurement curve; specifically, the X-axis and Y-axis directions of the air volume pressure difference measurement curve respectively represent the coordinate positions of the measurement points, and the Z-axis direction represents the air volume pressure difference value. The wind speed error setting module 32 is configured to: set a standard wind difference range of the air volume pressure difference measurement curve diagram corresponding to each air duct load value; the pressure difference analysis module 33 is configured to: obtain the coordinate positions of the measurement points corresponding to all air volume electrical signals within the standard wind difference range from at least two groups of air volume pressure difference measurement curve diagrams, and use the measurement points in the coordinate positions of all the obtained measurement points where the frequency of the same measurement points appearing is greater than the preset frequency as the wind speed uniform point of the air duct 4; the correction module 34 is configured to: based on the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33, adjust the standard wind difference range of the air volume pressure difference measurement curve diagram in real time, so as to adjust the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33 to the set value, thereby accurately obtaining the average wind speed point position of the air duct 4.

[0021] Furthermore, if Figure 2 As shown, the drive unit 12 includes a support structure 121, a displacement structure and a control module 126. The support structure 121 is provided with a plurality of mounting locations along the same axial direction, and the mounting locations are used to fix the air volume flowmeter 11. The displacement structure is provided on one side of the flow section of the air duct 4. The displacement structure has an axial moving module 122 and a radial moving module 123 that move relative to each other. The support structure 121 is installed on the axial moving module 122 or the radial moving module 123, so as to provide the air volume flowmeter 11 with multi-dimensional movement possibilities. The control module 126 is connected to the axial moving module 122 and the radial moving module 123, so as to accurately control the axial moving module 122 and the radial moving module 123 to run according to the set movement trajectory, so as to ensure that the air volume measurement component 1 works in an orderly manner. Specifically, the support structure 121 adopts a fixing rod with a hollow structure, and a plurality of mounting holes 124 are opened on the outer periphery of the fixing rod along the axial direction thereof, and a wiring structure 125 is arranged on the outer periphery of the fixing rod and on the air inlet side of the mounting holes 124 away from the air duct 4, so as to ensure convenient installation and realize reasonable layout of the lines. The wiring structure 125 can be set as a wiring trough or a wiring clamp to neatly arrange the lines and prevent the lines from interfering with the wind speed in the air duct 4 and affecting the measurement results.

[0022] In the above, both the axial moving module 122 and the radial moving module 123 adopt the movement mechanism of a motor-driven lead screw nut pair; specifically, the lead screw nut pair includes a shell, a lead screw is rotatably connected inside the shell, a nut is threadedly connected to the outer surface of the lead screw, and one end of the nut extends to the outside of the opening of the shell and a carrier plate is installed, the carrier plate is slidably connected to the opening side of the shell, and is used to fix the shell and support structure 121 of the axial moving module 122 or the radial moving module 123, one end of the lead screw passes through the shell and is connected to the rotating shaft of the motor, and the motor is connected to the control module 126, so that the motor is controlled by the control module 126 to drive the axial moving module 122 and the radial moving module 123 to run according to the set moving trajectory.

[0023] Furthermore, if Figure 5 As shown, a plurality of measuring points are arranged along a rectangular array in the flow cross section of the air duct 4, and the coordinate positions of the plurality of measuring points are set in radial and axial directions according to preset spacings, starting from a measuring point located at any one of the rectangular corners, so as to facilitate the establishment of a plane coordinate system with the center of the coordinate axis as the starting coordinate point in the air volume pressure difference measurement curve diagram, and the extension direction of the X-axis and the Y-axis as the axial coordinate axis and the radial coordinate axis, so as to draw the air volume pressure difference measurement curve diagram in the established plane coordinate system. In the above, the set moving trajectory is set to: move in sequence along the trend of two adjacent or connected measuring points in a plurality of measuring points in a broken line, triangle, circular ring or polygon. In practical applications, the control module 126 can flexibly adjust the moving trajectory and speed according to the specific shape and size of the air duct 4 and the preset measurement task, so as to realize the wind speed measurement of any measuring point in the air duct 4. For example, for some air ducts 4 of special shapes, such as elliptical or irregular polygonal air ducts 4, by precisely controlling the movement of the displacement structure, the wind speed flow meter can freely shuttle in the complex air duct 4 to complete high-precision measurement tasks.

[0024] Furthermore, if Figure 3As shown, the wind speed error setting module 32 includes an operation submodule 321 and a setting submodule 322. The operation submodule 321 calculates the average wind speed measurement value of the air duct 4 in the air volume pressure difference measurement curve diagram according to the set operation rules, and then calculates the standard wind difference range of the air volume pressure difference measurement curve diagram corresponding to each air duct load value based on the average wind speed measurement value of the air duct 4 and superimposed with the set error allowable range (lower than 2% of the average wind speed measurement value of the air duct 4); the set operation rule is: according to the sum of the air volume electrical signals of all measuring points in the air volume pressure difference measurement curve diagram divided by the number of all measuring points, the average wind speed measurement value of the air duct 4 under the corresponding air duct load value is obtained; the setting submodule 322 sets a unique identifier for the coordinate positions of all measuring points in the air volume pressure difference measurement curve diagram within the standard wind difference range of the air volume pressure difference measurement curve diagram according to the standard wind difference range of the air volume pressure difference measurement curve diagram calculated by the operation submodule 321, so as to facilitate subsequent data processing. This data-driven standard establishment method can fully consider the wind speed variation characteristics in different air ducts4 and under different working conditions, and improve the accuracy and reliability of the measurement results.

[0025] In this embodiment, the duct load value is set to 35%-100% of the standard load value. Specifically, the duct load value is set to any one of 35%, 40%, 50%, 60%, 70%, 80%, 90% or 100% of the standard load value. The air volume measurement component uses any several different duct load values ​​as a set of test data, and captures the wind speed data at the same measuring points in the same measurement cycle as the original data processed by the system to analyze the average wind speed points in the above-mentioned measurement points.

[0026] Furthermore, if Figure 4 As shown, the pressure difference analysis module 33 includes an identification submodule 331 and a comparison submodule 332. The identification submodule 331 is used to identify the coordinate positions of all measurement points set with unique identifiers from at least two groups of air volume pressure difference measurement curves; the comparison submodule 332 is used to use the measurement points whose frequency of occurrence of the same measurement points in the coordinate positions of the measurement points identified by the identification submodule 331 is greater than the preset frequency as the wind speed uniform point of the air duct 4. In actual operation, through the analysis and comparison of a large amount of measurement data, it can be found that the wind speed uniform point is often closely related to factors such as the structure and airflow characteristics of the air duct 4. For example, in the middle of the straight pipe section of the air duct 4, the wind speed is relatively uniform, while at the position close to the pipe wall or the air outlet, the wind speed is prone to large fluctuations. By accurately locating the wind speed uniform point, it can provide an important basis for the optimized operation of thermal power generation equipment, such as reasonably adjusting the position and angle of the burner, improving combustion efficiency, and reducing pollutant emissions.

[0027] Furthermore, the correction module 34 adjusts the standard wind difference range of the air volume pressure difference measurement curve in real time according to the preset correction rule; the preset correction rule is: when the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33 is less than the set value, the set error tolerance range is gradually adjusted in an increasing trend with the set unit amount, so that the standard wind difference range of the air volume pressure difference measurement curve gradually increases, until the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33 reaches the set value; when the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33 is greater than the set value, the set error tolerance range is gradually adjusted in a decreasing trend with the set unit amount, so that the standard wind difference range of the air volume pressure difference measurement curve gradually decreases, until the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33 reaches the set value. It is worth noting that this real-time correction mechanism enables the system to automatically adjust the measurement standard according to the actual measurement situation to ensure that the measurement result is always in the best state.

[0028] Furthermore, if Figure 1 As shown, the monitoring and analysis unit 3 also includes an alarm module 35, which is connected to the pressure difference analysis module 33. The alarm module 35 sends out an early warning signal according to a preset alarm rule; the preset alarm rule is: within a set time period, if the number of wind speed uniform points of the air duct 4 obtained by the pressure difference analysis module 33 is inconsistent with the set value, a warning signal is issued in time to indicate that the measurement result is abnormal. In the above, the alarm module 35 can not only notify the operator to take corresponding measures in time, but also record and analyze abnormal data to provide a reference for subsequent equipment maintenance and troubleshooting.

Claims

1. A wind duct wind speed uniform point measurement system for thermal power generation, characterized in that: The measurement system comprises: An air volume measurement assembly (1), the air volume measurement assembly (1) comprising a plurality of air volume flow meters (11) arranged at a certain flow cross section of an air duct (4), and a driving unit (12) for driving the air volume flow meters (11) to dynamically capture wind speed data at any air duct load value at a plurality of measuring points of the air duct (4) according to a preset measurement rule, wherein the preset measurement rule is: moving between two or more adjacent continuous measuring points according to a preset displacement amount and displacement speed within a measurement period according to a preset movement trajectory; An air volume transmitter (2) is connected to the air volume measurement component (1) and is used to receive wind speed data captured by the air volume measurement component (1) at each measurement point and convert it into an air volume electrical signal corresponding to the measurement point, and generate a configuration file for storing the air volume electrical signal, the coordinate position of the measurement point corresponding thereto, and the air duct load value; A monitoring and analysis unit (3), the monitoring and analysis unit (3) comprising a pressure difference curve generator (31), a wind speed error setting module (32) and a pressure difference analysis module (33), the pressure difference curve generator (31) being configured to: retrieve the coordinate positions of all the measuring points under the same wind duct load value and the wind volume electrical signals corresponding thereto from the configuration file within any number of measurement cycles, and generate a wind volume pressure difference measurement curve based on a neural network; the wind speed error setting module (32) being configured to: set a standard wind difference range of the wind volume pressure difference measurement curve corresponding to each wind duct load value; the pressure difference analysis module (33) being configured to: obtain the coordinate positions of all the measuring points corresponding to the wind volume electrical signals within the standard wind difference range from at least two groups of the wind volume pressure difference measurement curves, and use the measuring points whose frequency of occurrence of the same measuring points is greater than a preset frequency among the obtained coordinate positions of all the measuring points as wind speed uniformity points of the wind duct (4); The driving unit (12) comprises: The support structure (121) is provided with a plurality of mounting locations along the same axial direction, wherein the mounting locations are used to fix the air volume flow meter (11); A displacement structure is arranged on one side of the flow cross section of the air duct (4), the displacement structure comprising an axially movable module (122) and a radially movable module (123) that move relative to each other, and the support structure (121) is mounted on the axially movable module (122) or the radially movable module (123); A control module (126) is connected to the axial movement module (122) and the radial movement module (123) to control the axial movement module (122) and the radial movement module (123) to move according to a set movement trajectory.

2. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 1, characterized in that: A plurality of measuring points are arranged along a rectangular array in the flow cross section of the air duct (4), and the coordinate positions of the plurality of measuring points are set in radial and axial directions according to preset spacings, starting from the measuring point located at any corner of the rectangle.

3. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 1, characterized in that: The set moving trajectory is: moving in sequence along the trend of two adjacent or connected measuring points among the multiple measuring points in a broken line, triangle, circular ring or polygonal shape.

4. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 1, characterized in that: The support structure (121) is configured as a fixing rod with a hollow structure, a plurality of mounting holes (124) are provided on the outer periphery of the fixing rod along its axial direction, and a wiring structure (125) is provided on the outer periphery of the fixing rod at the air inlet side of the mounting holes (124) away from the air duct (4).

5. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 1, characterized in that: The wind duct load value is set to 35%-100% of the standard load value, and the wind volume measurement component (1) uses any several different wind duct load values ​​as a set of test data to sequentially capture wind speed data at the same measurement point within the same measurement cycle.

6. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 1, characterized in that: The wind speed error setting module (32) comprises: The operation submodule (321) calculates the average wind speed measurement value of the air duct (4) in the air volume pressure difference measurement curve diagram according to a set operation rule, and then calculates the standard wind difference range of the air volume pressure difference measurement curve diagram corresponding to each air duct load value based on the average wind speed measurement value of the air duct (4) and superimposed with a set error tolerance range; the set operation rule is: according to the sum of the wind volume electrical signals of all the measurement points in the air volume pressure difference measurement curve diagram divided by the number of all the measurement points, the average wind speed measurement value of the air duct (4) corresponding to the air duct load value is obtained; A setting submodule (322) sets a unique identifier for the coordinate positions of all the measuring points in the air volume pressure difference measurement curve graph that are within the standard wind difference range of the air volume pressure difference measurement curve graph, based on the standard wind difference range of the air volume pressure difference measurement curve graph calculated by the operation submodule (321).

7. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 6, characterized in that: The set error tolerance range is lower than 2% of the average wind speed measurement value of the air duct (4).

8. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 6, characterized in that: The pressure difference analysis module (33) comprises: An identification submodule (331) is used to identify the coordinate positions of all the measurement points set with unique identifiers from at least two groups of the air volume pressure difference measurement curve graphs; The comparison submodule (332) is used to use the measurement points whose frequency of occurrence of the same measurement points among the coordinate positions of the measurement points identified by the identification submodule (331) is greater than a preset frequency as the wind speed uniformity points of the wind duct (4).

9. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 6, characterized in that: The monitoring and analysis unit (3) further comprises a correction module (34), wherein the correction module (34) is configured to: based on the number of wind speed uniform points of the air duct (4) obtained by the pressure differential analysis module (33), and in accordance with a preset correction rule, adjust the standard wind difference range of the air volume pressure differential measurement curve in real time, so as to adjust the number of wind speed uniform points of the air duct (4) obtained by the pressure differential analysis module (33) to a set value; The preset correction rule is as follows: when the number of wind speed uniform points of the air duct (4) obtained by the pressure difference analysis module (33) is less than a set value, the set error tolerance range is gradually adjusted in an increasing trend with a set unit amount, so that the standard wind difference range of the air volume pressure difference measurement curve diagram gradually increases until the number of wind speed uniform points of the air duct (4) obtained by the pressure difference analysis module (33) reaches the set value; when the number of wind speed uniform points of the air duct (4) obtained by the pressure difference analysis module (33) is greater than a set value, the set error tolerance range is gradually adjusted in a decreasing trend with a set unit amount, so that the standard wind difference range of the air volume pressure difference measurement curve diagram gradually decreases until the number of wind speed uniform points of the air duct (4) obtained by the pressure difference analysis module (33) reaches the set value.

10. The wind duct wind speed uniform point measurement system for thermal power generation according to claim 1, characterized in that: The monitoring and analysis unit (3) further comprises an alarm module (35), the alarm module (35) being connected to the pressure difference analysis module (33), and the alarm module (35) issuing an early warning signal in accordance with a preset alarm rule; the preset alarm rule being: within a set time period, if the number of wind speed uniformity points of the air duct (4) obtained by the pressure difference analysis module (33) is inconsistent with a set value, an early warning signal is issued to indicate that the measurement result is abnormal.

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