Intelligent channel flowmeter and measuring method thereof

Abstract

The invention discloses an intelligent channel flowmeter and a measuring method thereof.The intelligent channel flowmeter comprises a radar measuring unit, a data collecting and processing unit and a support, the support is rotationally connected with a reciprocating lead screw, the reciprocating lead screw is provided with a first sliding block in a matched mode, the first sliding block is fixedly connected with the radar measuring unit, and the flowmeter further comprises a power supply unit; the power supply unit comprises a mounting plate, a water turbine, a generator and a storage battery, the mounting plate is connected with the support, the water turbine is rotationally connected to the mounting plate, the axis position of the water turbine is coaxially connected with an input shaft of the generator through a rotating shaft, the generator is mounted on the mounting plate, and the storage battery is mounted on the support and electrically connected with the generator. The storage battery is electrically connected with the radar measuring unit, the storage battery is electrically connected with the data collecting and processing unit, and a transmission assembly is arranged between the rotating shaft and the reciprocating lead screw. The objective of the invention is to solve the technical problems of high cost, poor measurement range and low energy utilization rate.

Description

Technical Field

[0001] This invention belongs to the field of flow measurement technology, specifically, it relates to an intelligent channel flow meter and its measurement method. Background Technology

[0002] Radar flow meters have become an ideal monitoring device choice in the field of channel flow measurement due to their significant advantages such as non-contact measurement, high accuracy, and adaptability to complex environments.

[0003] A current intelligent channel radar flow meter includes a radar measurement unit, a data acquisition and processing unit, and a bracket for mounting the radar measurement unit and the data acquisition and processing unit. The radar measurement unit includes a radar flow velocity sensor and a radar water level sensor. The radar flow velocity sensor works by emitting radar waves towards the water surface and receiving the reflected signals, calculating the water flow velocity using the Doppler effect. The radar water level sensor emits radar waves and measures the time difference of the reflected waves to calculate the distance from the water surface to the sensor, thereby acquiring water level data. The data acquisition and processing unit consists of a data acquisition module, a processing module, and a communication module. The data acquisition module collects the flow velocity and water level data acquired by the radar sensor; the processing module, based on the collected flow velocity and water level data and a pre-set channel cross-sectional shape and size, uses flow calculation formulas to calculate instantaneous and cumulative flow; the communication module transmits the collected data to a remote monitoring center or host computer system.

[0004] However, this intelligent channel radar flow meter still has the following drawbacks: Firstly, to improve detection accuracy, multiple radar measurement units are typically added to the support frame along the channel width. However, this significantly increases the operating cost of the equipment. Moreover, even with multiple radar measurement units, measurements can only be taken at a few fixed locations along the channel width, failing to achieve dynamic measurement of flow rate along the channel width, thus limiting the measurement range.

[0005] Secondly, the kinetic energy generated by the water flow was not fully utilized, resulting in low energy efficiency, and further optimization is needed in energy utilization. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide an intelligent channel flow meter and its measurement method, thereby solving the technical problems of high equipment operating costs caused by adding multiple radar measurement units along the channel width direction on the support, limited measurement range due to the inability to dynamically measure the flow in the channel width direction, and low energy utilization rate due to the failure to fully utilize the kinetic energy generated by the water flow.

[0007] One of the inventions: To achieve the aforementioned objectives, the present invention employs the following technical solution: an intelligent channel flow meter, comprising a radar measurement unit, a data acquisition and processing unit, and a bracket for mounting the radar measurement unit and the data acquisition and processing unit. A reciprocating screw is rotatably connected to the bracket. The reciprocating screw is horizontally arranged along the width direction of the channel and is located above the channel. A first slider is fitted on the reciprocating screw. By rotating the reciprocating screw, the first slider can move back and forth along the reciprocating screw. The first slider is fixedly connected to the radar measurement unit. The flow meter also includes a power supply unit, which includes a mounting plate, a water turbine, a generator, and a battery. The mounting plate is connected to a bracket, and the water turbine is rotatably connected to the mounting plate. The water turbine is vertically arranged on one side of the channel length direction, with its lower side located in the channel liquid surface. The shaft center of the water turbine is coaxially connected to the input shaft of the generator via a rotating shaft. The generator is mounted on the mounting plate, and the battery is mounted on the bracket. The battery is electrically connected to the generator, and the battery is electrically connected to both the radar measurement unit and the data acquisition and processing unit. A transmission assembly is provided between the rotating shaft and the reciprocating lead screw. Through the transmission assembly, the reciprocating lead screw can be rotated during the process of water flow driving the water turbine to rotate.

[0008] Compared with the prior art, the advantages of the present invention include: (1) The present invention provides an intelligent channel flow meter that uses the rotation of a reciprocating lead screw to move a first slider and a radar measuring unit along the channel width direction, thereby achieving measurement at different positions along the channel width direction. Compared with the prior art, it eliminates the need to add multiple radar measuring units along the channel width direction on the support, effectively reducing equipment operating costs. Simultaneously, the radar measuring unit can move and measure simultaneously during the reciprocating motion, achieving dynamic measurement along the channel width direction and improving the comprehensiveness of the measurement.

[0009] (2) The present invention provides an intelligent channel flow meter. The measurement method adopted by this flow meter effectively avoids the problem of inaccurate overall flow calculation caused by local measurement errors. For example, when the flow velocity distribution is uneven in the width direction of the channel, moving measurement can obtain more comprehensive flow velocity data, thereby improving the accuracy of flow measurement.

[0010] (3) The intelligent channel flow meter provided by this invention utilizes the kinetic energy of the water flow in the channel to drive the water turbine to rotate, which in turn drives the generator to generate electricity, providing power support for the entire flow meter. This achieves energy self-sufficiency, eliminates the need for an external power source, and effectively reduces operating costs. In addition, hydropower generation is a clean and renewable energy utilization method that meets environmental protection requirements and reduces dependence on traditional energy sources.

[0011] (4) The present invention provides an intelligent channel flow meter that transmits the rotational power of the water turbine to the reciprocating lead screw through the transmission component during the rotation of the water turbine, thereby realizing the function of water flow driving the water turbine to rotate and driving the radar measurement unit to move, realizing the linkage control of the system and improving the automation level of the system.

[0012] Furthermore, the transmission assembly includes a first transmission wheel and a second transmission wheel, the first transmission wheel being coaxially and fixedly connected to the rotating shaft, and the first transmission wheel and the second transmission wheel being connected by a transmission component. The transmission assembly includes a gear, a disc, and a fan-shaped external rack. The gear is coaxially fixedly connected to a reciprocating lead screw, the disc is rotatably connected to a bracket, the second transmission wheel is coaxially fixedly connected to the disc, and the external rack is coaxially mounted on the disc. The external rack can mesh with the gear as the disc rotates.

[0013] Furthermore, the external rack is detachably connected to the disk, the external rack can slide along the circumference of the disk, and multiple external racks can be joined together after sliding along the disk. The external rack is provided with a first fixing member that fixes it to the disk after sliding.

[0014] Furthermore, the disk has a hollow structure.

[0015] Furthermore, the mounting plate is slidably connected to the bracket in the vertical direction, and an airbag is provided below the mounting plate, which allows the mounting plate to float on the surface of the channel liquid. The support is provided with two adjusting wheel sets, which are symmetrically distributed about the line connecting the first and second transmission wheel axes. Each adjusting wheel set includes an adjusting wheel and an elastic element. The adjusting wheel is slidably connected to the support along the length of the channel, and the elastic element is disposed between the adjusting wheel and the support. Both adjusting wheels are located inside the transmission element. Under the action of the two elastic elements, both adjusting wheels abut against the transmission element and engage in transmission with the transmission element.

[0016] Furthermore, a crossbar is provided on the support along the length of the channel, and a strip slide rail is provided on the crossbar. The strip slide rail is arranged along the length of the crossbar, and two second sliders are slidably arranged on the strip slide rail. Both second sliders can slide along the length of the crossbar, and the two adjusting wheels are respectively rotatably connected to the two second sliders. The two second sliders are respectively connected to one end of the two elastic elements at opposite ends, and two third sliders are disposed between the two elastic elements, with the opposite ends of the two third sliders respectively connected to the opposite ends of the two elastic elements. A transmission rod is vertically arranged between the two third sliders. The lower end of the transmission rod extends vertically downward and is fixedly connected to the mounting plate. Two inclined rods are arranged on both sides of the transmission rod. The lower ends of the two inclined rods are inclined away from the transmission rod. The opposite sides of the two inclined rods abut against the opposite ends of the two third sliders.

[0017] Furthermore, the upper ends of both inclined rods are hinged to the top of the transmission rod. A fourth slider is slidably connected to the transmission rod along its length. Two support rods are respectively provided between the two sides of the fourth slider and the two inclined rods. One end of the support rod is hinged to the middle of the inclined rod, and the other end is hinged to the fourth slider. A second fixing member is provided on the fourth slider for fixing the fourth slider to the transmission rod.

[0018] The second invention: A measurement method includes the following steps: Step 1: Complete the installation and fixation of the bracket. The mounting plate floats on the surface of the liquid in the channel, and the water flow can impact the water turbine to rotate. Step 2: Start the radar measurement unit and data acquisition and processing unit. The water flow impacts the turbine to rotate, and through the transmission component, the reciprocating screw rotates, which in turn drives the radar measurement unit to move back and forth to achieve dynamic measurement. At the same time, the rotation of the turbine transfers mechanical energy to the generator to generate electricity, which is then stored in the battery. Step 3: The data acquisition and processing unit collects the flow velocity and water level data obtained by the radar sensor. Based on the collected flow velocity and water level data, combined with the pre-set channel cross-sectional shape and size, the instantaneous flow rate and cumulative flow rate are calculated using the flow calculation formula. Finally, the processed data is transmitted to the remote monitoring center or host computer system to achieve dynamic monitoring. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural illustration of an embodiment of the present invention. Figure 1 ; Figure 2 This is a structural illustration of an embodiment of the present invention. Figure 2 ; Figure 3 This is a structural illustration of an embodiment of the present invention. Figure 3 ; Figure 4 for Figure 3A schematic diagram of the cross-sectional structure; Figure 5 This is a disassembly diagram of the disc section; Figure 6 This is a structural schematic diagram of the transmission rod section.

[0021] Figure label: Radar measurement unit 1, data acquisition and processing unit 2, bracket 3, reciprocating lead screw 4, first slider 5, mounting plate 6, water turbine 7, generator 8, rotating shaft 9, first transmission wheel 10, second transmission wheel 11, transmission component 12, gear 13, disc 14, external rack 15, first fixing component 16, airbag 17, adjusting wheel 18, elastic component 19, crossbar 20, second slider 21, third slider 22, transmission rod 23, diagonal rod 24, support rod 25, fourth slider 26, second fixing component 27. Detailed Implementation

[0022] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0023] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0025] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0026] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0027] One of the inventions: Please see Figure 1-6 The present invention provides a technical solution: an intelligent channel flow meter, including a radar measurement unit 1, a data acquisition and processing unit 2, and a bracket 3 for mounting the radar measurement unit 1 and the data acquisition and processing unit 2.

[0028] Among them, bracket 3 provides installation support for radar measurement unit 1 and data acquisition and processing unit 2, ensuring that they can be stably fixed above the channel. Bracket 3 is usually made of sturdy metal material, with a certain strength and rigidity, and can withstand the weight of each component as well as the vibration and impact that may occur during operation.

[0029] Radar measurement unit 1 includes a radar flow velocity sensor and a radar water level sensor. The radar flow velocity sensor works by emitting radar waves towards the water surface and receiving the reflected signals, calculating the water flow velocity using the Doppler effect. The radar water level sensor, on the other hand, emits radar waves and measures the time difference of the reflected waves to calculate the distance from the water surface to the sensor, thereby acquiring water level data. Data acquisition and processing unit 2 consists of a data acquisition module, a processing module, and a communication module. The data acquisition module is responsible for collecting the flow velocity and water level data acquired by the radar sensors; the processing module, based on the collected flow velocity and water level data and combined with a pre-set channel cross-sectional shape and size, uses the flow calculation formula to calculate the instantaneous flow rate and cumulative flow rate; the communication module is responsible for transmitting the processed data to a remote monitoring center or a host computer system.

[0030] A reciprocating screw 4 is rotatably connected to the bracket 3. The reciprocating screw 4 is horizontally positioned along the channel width and above the channel. A first slider 5 is fitted onto the reciprocating screw 4. Rotating the reciprocating screw 4 causes the first slider 5 to move back and forth along it. The first slider 5 is fixedly connected to the radar measurement unit 1. The reciprocating screw 4 provides a horizontal track for the first slider 5. Its rotation drives the first slider 5 to move back and forth along the channel width, allowing the radar measurement unit 1 to perform mobile measurements within the channel width. The first slider 5, as a component connecting the radar measurement unit 1 and the reciprocating screw 4, converts the rotational motion of the reciprocating screw 4 into its own linear reciprocating motion, thereby driving the radar measurement unit 1 to move along the channel width, achieving the mobile measurement function. The first slider 5 has an internal structure that matches the thread of the reciprocating screw 4. When the reciprocating screw 4 rotates, the interaction force between the internal structure of the first slider 5 and the thread causes the first slider 5 to move along the screw. Since the first slider 5 is fixedly connected to the radar measurement unit 1, the radar measurement unit 1 moves along with the first slider 5. The flow meter also includes a power supply unit, which comprises a mounting plate 6, a water turbine 7, a generator 8, and a battery. The mounting plate 6 is connected to the bracket 3. The water turbine 7 is rotatably connected to the mounting plate 6, and is vertically positioned along one side of the channel's length with its lower side submerged in the channel's liquid surface. The mounting plate 6 provides a platform for the water turbine 7, ensuring its correct position within the channel so that it can effectively rotate under the influence of the water flow. In other words, the blades of the water turbine 7 should face the direction of the channel's water flow so that they can rotate under the impact of the water flow. As an energy conversion device, the water turbine 7 converts the kinetic energy of the water flow in the channel into mechanical energy. The water flow impacts the blades of the water turbine 7, causing it to rotate around its axis, providing power for the subsequent power generation process.

[0031] The shaft of the water turbine 7 is coaxially connected to the input shaft of the generator 8 via a rotating shaft 9. The generator 8 is mounted on the mounting plate 6. The mechanical energy transmitted from the water turbine 7 is converted into electrical energy. Through the electromagnetic induction principle inside the generator 8, the rotational motion of the water turbine 7 is converted into electrical energy output, providing power support for the entire flow meter's electrical equipment.

[0032] The battery is mounted on bracket 3 and is electrically connected to generator 8, radar measurement unit 1, and data acquisition and processing unit 2. The battery stores the electrical energy generated by generator 8 and provides a stable power supply to equipment such as radar measurement unit 1 and data acquisition and processing unit 2 when needed. The battery is electrically connected to generator 8. When generator 8 generates electricity, electrical energy is stored in the battery through a charging circuit. When equipment such as radar measurement unit 1 and data acquisition and processing unit 2 requires power, the battery releases the stored electrical energy through a discharging circuit to power the equipment.

[0033] A transmission assembly is installed between the rotating shaft 9 and the reciprocating lead screw 4. Through the transmission assembly, the reciprocating lead screw 4 can rotate as the water flow drives the turbine 7 to rotate. During the rotation of the turbine 7, the rotational power of the turbine 7 is transmitted to the reciprocating lead screw 4, causing the reciprocating lead screw 4 to rotate accordingly. This realizes the function of the water flow driving the turbine 7 to rotate and move the radar measurement unit 1, achieving efficient energy utilization and system linkage control.

[0034] In the specific implementation process of the above plan: ① The reciprocating screw 4 rotates to move the first slider 5 and the radar measuring unit 1 along the channel width direction, thereby achieving measurement at different positions along the channel width direction. Compared with existing technologies, it eliminates the need to add multiple radar measuring units 1 along the channel width direction on the support 3, effectively reducing equipment operating costs. Simultaneously, the radar measuring unit 1 can move and measure simultaneously during reciprocating motion, achieving dynamic measurement along the channel width direction and improving the comprehensiveness of the measurement.

[0035] ② The measurement method used in this flow meter effectively avoids the problem of inaccurate overall flow calculation caused by local measurement errors. For example, when the flow velocity distribution is uneven along the width of the channel, moving the measurement can obtain more comprehensive flow velocity data, thereby improving the accuracy of flow measurement.

[0036] ③ The kinetic energy of the water flow in the channel drives the turbine 7 to rotate, which in turn drives the generator 8 to generate electricity, providing power for the entire flow meter. This achieves energy self-sufficiency, eliminating the need for an external power source and effectively reducing operating costs. Furthermore, hydropower generation is a clean and renewable energy utilization method that meets environmental protection requirements and reduces dependence on traditional energy sources.

[0037] ④ During the rotation of the turbine 7, the rotational power of the turbine 7 is transmitted to the reciprocating screw 4 through the transmission component, realizing the function of water flow driving the turbine 7 to rotate and drive the radar measurement unit 1 to move, realizing the linkage control of the system and improving the automation level of the system.

[0038] In this embodiment, the transmission assembly includes a first transmission wheel 10 and a second transmission wheel 11. The first transmission wheel 10 is coaxially and fixedly connected to the rotating shaft 9. Since the first transmission wheel 10 and the rotating shaft 9 are coaxially and fixedly connected, when the rotating shaft 9 is driven by the turbine 7, the first transmission wheel 10 will rotate synchronously with the rotating shaft 9, and its speed and direction of rotation are the same as those of the rotating shaft 9. The first transmission wheel 10 and the second transmission wheel 11 are connected by a transmission component 12. When the first transmission wheel 10 rotates, the friction or meshing force between the transmission component 12 and the second transmission wheel 11 drives the second transmission wheel 11 to rotate. The transmission component 12 can be a belt drive or a chain drive. Belt drives rely on friction, while chain drives rely on meshing force.

[0039] The transmission assembly includes a gear 13, a disc 14, and a fan-shaped external rack 15. The gear 13 is coaxially and fixedly connected to the reciprocating lead screw 4. Rotation of the gear 13 drives the reciprocating lead screw 4 to rotate, thereby realizing the reciprocating movement of the first slider 5. The disc 14 is rotatably connected to the bracket 3. The disc 14 is connected to the bracket 3 through bearings and other rotating connecting parts, allowing it to rotate freely on the bracket 3. The second transmission wheel 11 is coaxially and fixedly connected to the disc 14. When the second transmission wheel 11 rotates, it drives the disc 14 to rotate as well.

[0040] An external rack 15 is coaxially mounted on a disk 14, and can mesh with a gear 13 as the disk 14 rotates. The external rack 15 has a tooth profile that matches that of the gear 13. When the disk 14 rotates, the external rack 15 rotates with it. When the teeth of the external rack 15 contact the teeth of the gear 13, a meshing force is generated between them, causing the gear 13 to start rotating. When the teeth of the external rack 15 disengage from the teeth of the gear 13, the gear 13 loses its meshing force and stops rotating. It starts rotating again when the external rack 15 re-meshes with the gear 13. This arrangement achieves intermittent rotation of the gear 13, which causes the reciprocating lead screw 4 to rotate intermittently. This causes the first slider 5 to stop for a period of time after sliding a certain distance before continuing to slide. When it stops, the radar measurement unit 1 also remains stationary.

[0041] The above scheme has the following beneficial effects: The meshing and disengagement characteristics of the external rack 15 and gear 13 determine that the radar measurement unit 1 has both a dynamic measurement phase, moving with the reciprocating screw 4, and a fixed-point observation phase, stationary at a fixed location. Combining dynamic measurement and fixed-point observation fully leverages the advantages of both methods. Dynamic measurement can quickly acquire overall data trends along the channel width, understanding the approximate changes in flow velocity and liquid level, while fixed-point observation allows for in-depth and precise measurement at a fixed location, obtaining more detailed and accurate data. This combined approach enables a more comprehensive and accurate understanding of the channel's flow conditions, providing a more reliable basis for subsequent water resource management and scheduling.

[0042] In this embodiment, the outer rack 15 is detachably connected to the disk 14, and the outer rack 15 can slide along the circumference of the disk 14. Multiple outer racks 15 can be spliced ​​together after sliding along the disk 14. The outer rack 15 is provided with a first fixing member 16 that fixes it to the disk 14 after sliding.

[0043] Specifically, the outer rack 15 has a groove on its inner side, which engages with the edge of the disk 14, allowing the outer rack 15 to slide along the outer edge of the disk 14. The first fixing member 16 is a first fixing bolt, which is rotatably mounted on the side wall of the outer rack 15. By rotating the first fixing bolt, one end of the first fixing bolt relative to the disk 14 passes through the outer rack 15 and abuts against the surface of the disk 14 to form a fixation.

[0044] The above scheme has the following beneficial effects: First, the outer rack 15 is detachably connected to the disc 14. When the outer rack 15 is worn or damaged, it can be easily and quickly removed from the disc 14 and replaced.

[0045] Secondly, the measurement scheme can be adjusted according to different water flow conditions: ① Under steady water flow conditions, the water flow speed is relatively slow, the water surface is relatively calm, and the measured data fluctuates less. At this time, measurement efficiency should be given priority. Furthermore, since the water flow speed is relatively slow, the rotation speed of the disc is also relatively slow. Under these circumstances, the number of fixed-point measurements and the fixed-point measurement time should be reduced accordingly.

[0046] The number of teeth is increased by assembling the external rack 15. As the number of teeth increases, the number of rotations of the gear 13 increases, which in turn increases the number of rotations of the reciprocating screw 4. Ultimately, this leads to an increase in the moving distance of the first slider 5, an increase in the distance interval between adjacent fixed measurement positions, and a corresponding decrease in the number of fixed points. This adjustment avoids over-measurement in the data stable region.

[0047] In addition, after the external rack 15 is assembled, the non-meshing time between the external rack 15 and the gear 13 is reduced, which shortens the dwell time of the radar measurement unit 1 at each fixed point, speeds up the measurement progress, and enables the measurement task of the channel to be completed in a shorter time, thus improving the measurement efficiency.

[0048] ② In fast-flowing water, the flow velocity and water surface fluctuations are large, and the flow velocity and water level differences at different locations are obvious. In this case, measurement accuracy should be given priority. Furthermore, since the water flow is fast and the disc rotates relatively fast, the number of fixed-point measurements and the fixed-point measurement time should be increased accordingly.

[0049] By reducing the number of external racks 15, the number of rotations of gear 13 is reduced, and the number of rotations of reciprocating screw 4 is also reduced accordingly. This leads to a shorter movement distance of the first slider 5, a smaller distance between each pair of adjacent fixed points, and a corresponding increase in the number of fixed-point measurements. Increasing the number of fixed-point measurements allows for more detailed capture of flow velocity and water level changes at different locations within the channel, thereby improving the density and accuracy of the measurement data.

[0050] Furthermore, in environments with rapid water flow, the flow changes quickly, requiring a longer fixed-point measurement time to stabilize data acquisition and reduce measurement errors caused by water flow fluctuations. By reducing the number of engagements of the external rack 15, the number of teeth in the external rack 15 is reduced, increasing the non-meshing time between the external gear ring and the gear 13. This allows the gear 13 to have more pause time during rotation, thus extending the dwell time of the radar measurement unit 1 at each fixed point. Extending the fixed-point measurement time allows the radar measurement unit 1 sufficient time to measure the water flow at the current location, improving the accuracy and reliability of the measurement results.

[0051] In this embodiment: To reduce the weight of the disk 14 and improve the transmission effect, the disk 14 is a hollow structure. Since an excessively heavy disk 14 increases the load on the transmission system, requiring more energy to overcome its own inertia during startup and operation, the hollow structure reduces the weight of the disk 14 and improves the transmission effect.

[0052] In this embodiment: the mounting plate 6 is slidably connected to the bracket 3 along the vertical direction. An airbag 17 is provided below the mounting plate 6, which allows the mounting plate 6 to float on the surface of the channel liquid. Through the sliding connection between the mounting plate 6 and the bracket 3 and the cooperation between the mounting plate 6 and the airbag 17, the mounting plate 6 can float on the surface of the channel liquid, moving up and down with the change of liquid level. Consequently, the water turbine 7 can move up and down with the liquid level, ensuring that the blades of the water turbine 7 are always in a good position and can better withstand the impact of the water flow.

[0053] The support 3 is equipped with two adjusting wheel sets, which are symmetrically distributed about the line connecting the axes of the first transmission wheel 10 and the second transmission wheel 11. Each adjusting wheel set includes an adjusting wheel 18 and an elastic element 19. The adjusting wheel 18 is slidably connected to the support 3 along the length of the channel. The elastic element 19 is located between the adjusting wheel 18 and the support 3. Both adjusting wheels 18 are located inside the transmission element 12. Under the action of the two elastic elements 19, both adjusting wheels 18 abut against the transmission element 12 and are in transmission cooperation with the transmission element 12.

[0054] The main function of the adjusting wheel 18 is to tension the transmission component 12, ensuring that the transmission component 12 maintains appropriate tension during transmission and effectively preventing slackness or slippage. This ensures the transmission has a certain degree of stability and reliability. Simultaneously, the adjusting wheel 18 can slide along the length of the channel on the support 3 to adapt to changes in the length of the transmission component 12 under different conditions. For example, when the transmission component 12 extends due to the upward movement of the first transmission wheel 10 (increased channel liquid level, and the mounting plate 6 moving upward with the liquid level under the action of the airbag 17, thus causing the first transmission wheel 10 to move upward), the two adjusting wheels 18 will slide in opposite directions under the action of the two elastic elements 19 to maintain the tension of the transmission component 12. Conversely, when the transmission component 12 contracts due to the downward movement of the first transmission wheel 10 (decreased channel liquid level, and the mounting plate 6 moving downward with the liquid level under the action of the airbag 17, thus causing the first transmission wheel 10 to move downward), the two adjusting wheels 18 will slide relative to each other, compressing the elastic force of the two elastic elements 19.

[0055] The above scheme has the following beneficial effects: ① The buoyancy generated by the airbag 17 allows the mounting plate 6 to float above the channel liquid surface and move up and down with changes in the liquid level, thereby driving the turbine 7 to move together. In this way, the turbine blades 7 can always be in a relatively ideal position, thus better absorbing the impact of the water flow, helping to improve the energy conversion efficiency of the turbine 7, converting more kinetic energy of the water flow into mechanical energy, increasing power generation or meeting other power needs, thereby improving the energy utilization efficiency of the entire system.

[0056] ② Regardless of changes in the liquid level in the channel, turbine 7 can automatically adjust its position without frequent manual intervention. This feature improves the system's adaptability and automation, effectively reducing manual operation costs.

[0057] ③ Since the turbine blades 7 can always be in a suitable position, it can effectively avoid the situation where the water flow cannot impact the turbine 7 to rotate due to the turbine 7 being completely submerged below the channel liquid surface or completely exposed above the liquid surface, thus reducing the occurrence of power generation and transmission failures.

[0058] ④ The adjusting wheel 18 abuts against the transmission component 12 under the action of the elastic element 19, and cooperates with the transmission component 12 to tension the transmission component 12, effectively preventing the transmission component 12 from becoming loose or slipping, so that the transmission has a certain degree of stability and reliability.

[0059] ⑤ The symmetrically distributed adjustment wheel set can make the transmission component 12 more evenly stressed during transmission.

[0060] In this embodiment: a crossbar 20 is provided on the support 3 along the length of the channel. A strip slide rail is provided on the crossbar 20, and two second sliders 21 are slidably arranged on the strip slide rail. Both second sliders 21 can slide along the length of the crossbar 20. Two adjusting wheels 18 are rotatably connected to the two second sliders 21 respectively. On the one hand, the second sliders 21 are rotatably connected to the adjusting wheels 18, providing support and a rotation axis for the adjusting wheels 18, so that the adjusting wheels 18 can rotate normally during transmission. On the other hand, the second sliders 21 can slide on the strip slide rail, driving the adjusting wheels 18 to move along the length of the crossbar 20 to adapt to changes in the length of the transmission component 12, thereby realizing the tension adjustment of the transmission component 12.

[0061] Two second sliders 21 are connected at opposite ends to one end of two elastic elements 19, and two third sliders 22 are disposed between the two elastic elements 19, with their opposite ends connected to the opposite ends of the two elastic elements 19. Specifically, the elastic elements 19 are springs, and the opposite ends of the two second sliders 21 are fixedly connected to one end of each of the two springs, and the opposite ends of the two third sliders 22 are fixedly connected to the opposite ends of each of the two springs.

[0062] A transmission rod 23 is vertically arranged between the two third sliders 22. The lower end of the transmission rod 23 extends vertically downward and is fixedly connected to the mounting plate 6. Since the transmission rod 23 is fixedly connected to the mounting plate 6, when the mounting plate 6 floats up and down with the change of liquid level under the action of the airbag 17, the transmission rod 23 will move up and down synchronously.

[0063] Two inclined rods 24 are respectively provided on both sides of the transmission rod 23. The lower ends of the two inclined rods 24 are inclined away from the transmission rod 23. The opposite sides of the two inclined rods 24 abut against the opposite ends of the two third sliders 22.

[0064] When the transmission rod 23 moves upward, the inclined rod 24 moves upward accordingly. Because the inclined rod 24 is tilted, it pushes the third slider 22, which it contacts, to move away from the transmission rod 23 along the strip rail. This compresses the elastic element 19 connecting the second slider 21 and the third slider 22. After compression, the elastic element 19's elastic force increases, which is transmitted to the adjusting wheel 18 through the second slider 21, causing the adjusting wheel 18 to move away from the transmission rod 23. This increases the tension of the transmission element 12. If adjustment relies solely on the elastic force of the elastic element 19, its elastic force will decrease after the elastic element 19 drives the adjusting wheel 18 to move, resulting in a larger fluctuation range of elastic force and greater changes in the tension of the transmission element 12. The pushing action of the inclined rod 24 can actively and quickly push the third slider 22 to move, responding in advance to the extension of the transmission component 12, and playing a certain compensating role. This makes the elastic force applied by the elastic component 19 to the adjusting wheel 18 during the adjustment process fluctuate less, the adjustment is more stable, the tension force of the transmission component 12 fluctuates less, and the tension force of the transmission component 12 is more stable.

[0065] Similarly, when the transmission rod 23 moves downward, the inclined rod 24 moves downward accordingly. At this time, the inclined rod 24 no longer applies a pushing force to the third slider 22 away from the transmission rod 23, but instead leaves space for the third slider 22 to move closer to the transmission rod 23. Since the transmission component 12 will squeeze the adjusting wheel 18 when the mounting plate 6 moves downward, causing the adjusting wheel 18 to move towards the transmission rod 23, if no space is left for the third slider 22 to move closer to the transmission rod 23, the elastic component 19 will be further compressed, increasing the elastic force of the elastic component 19 and causing a large fluctuation range of the elastic force. The inclined rod 24 will play a certain compensating role for the elastic component 19, making the fluctuation range of the elastic force applied by the elastic component 19 to the adjusting wheel 18 smaller, the fluctuation range of the tension force of the transmission component 12 smaller, and the tension force of the transmission component 12 more stable.

[0066] In this embodiment: the upper ends of both inclined rods 24 are hinged to the top of the transmission rod 23. A fourth slider 26 is slidably connected to the transmission rod 23 along its length. Two support rods 25 are respectively provided between the fourth slider 26 and the two inclined rods 24. One end of the support rod 25 is hinged to the middle of the inclined rod 24, and the other end is hinged to the fourth slider 26. A second fixing member 27 is provided on the fourth slider 26 for fixing the fourth slider 26 to the transmission rod 23. With the above structural arrangement, the angle between the inclined rods 24 and the transmission rod 23 can be adjusted. In this way, the movement of the third slider 22 can better adapt to the elongation or shortening of the transmission member 12, thereby making the fluctuation range of the elastic force of the elastic member 19 smaller during the adjustment process, and making the tension of the transmission member 12 more stable.

[0067] Specifically, the second fixing member 27 is the second fixing bolt, and the second fixing bolt is rotatably mounted on the fourth slider 26. By rotating the second fixing bolt, the end of the second fixing bolt near the transmission rod 23 passes through the fourth slider 26 and abuts against the transmission rod 23 to form a fixation.

[0068] The second invention: A measurement method includes the following steps: Step 1: Complete the installation and fixation of bracket 3. Mounting plate 6 floats on the surface of the channel liquid, and the water flow can impact the water turbine 7 to rotate. Step 2: Start the radar measurement unit 1 and data acquisition and processing unit 2. The water flow impacts the water turbine 7 to rotate, and through the transmission component, the reciprocating screw 4 rotates, thereby driving the radar measurement unit 1 to move back and forth to achieve dynamic measurement. At the same time, the rotation of the water turbine 7 transmits mechanical energy to the generator 8 to generate electricity, which is then stored in the battery. Step 3: The data acquisition and processing unit 2 collects the flow velocity and water level data obtained by the radar sensor. Based on the collected flow velocity and water level data, combined with the pre-set channel cross-sectional shape and size, it uses the flow calculation formula to calculate the instantaneous flow rate and cumulative flow rate. Finally, the processed data is transmitted to the remote monitoring center or host computer system to achieve dynamic monitoring.

[0069] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An intelligent channel flow meter, comprising a radar measurement unit, a data acquisition and processing unit, and a bracket for mounting the radar measurement unit and the data acquisition and processing unit, characterized in that: A reciprocating screw is rotatably connected to the bracket. The reciprocating screw is horizontally arranged along the width of the channel and located above the channel. A first slider is fitted on the reciprocating screw. By rotating the reciprocating screw, the first slider can move back and forth along the reciprocating screw. The first slider is fixedly connected to the radar measurement unit. The flow meter also includes a power supply unit, which includes a mounting plate, a water turbine, a generator, and a battery. The mounting plate is connected to a bracket, and the water turbine is rotatably connected to the mounting plate. The water turbine is vertically arranged on one side of the channel length direction, with its lower side located in the channel liquid surface. The shaft center of the water turbine is coaxially connected to the input shaft of the generator via a rotating shaft. The generator is mounted on the mounting plate, and the battery is mounted on the bracket. The battery is electrically connected to the generator, and the battery is electrically connected to both the radar measurement unit and the data acquisition and processing unit. A transmission assembly is provided between the rotating shaft and the reciprocating lead screw. Through the transmission assembly, the reciprocating lead screw can be rotated during the process of water flow driving the water turbine to rotate.

2. The intelligent channel flow meter according to claim 1, characterized in that: The transmission assembly includes a first transmission wheel and a second transmission wheel. The first transmission wheel is coaxially and fixedly connected to the rotating shaft, and the first transmission wheel and the second transmission wheel are connected by a transmission component. The transmission assembly includes a gear, a disc, and a fan-shaped external rack. The gear is coaxially fixedly connected to a reciprocating lead screw, the disc is rotatably connected to a bracket, the second transmission wheel is coaxially fixedly connected to the disc, and the external rack is coaxially mounted on the disc. The external rack can mesh with the gear as the disc rotates.

3. The intelligent channel flow meter according to claim 2, characterized in that: The external rack is detachably connected to the disk. The external rack can slide along the circumference of the disk, and multiple external racks can be joined together after sliding along the disk. The external rack is provided with a first fixing member that fixes it to the disk after sliding.

4. The intelligent channel flow meter according to claim 3, characterized in that: The disk has a hollow structure.

5. The intelligent channel flow meter according to claim 4, characterized in that: The mounting plate is slidably connected to the bracket along the vertical direction, and an airbag is provided below the mounting plate, which allows the mounting plate to float on the surface of the channel liquid. The support is provided with two adjusting wheel sets, which are symmetrically distributed about the line connecting the first and second transmission wheel axes. Each adjusting wheel set includes an adjusting wheel and an elastic element. The adjusting wheel is slidably connected to the support along the length of the channel, and the elastic element is disposed between the adjusting wheel and the support. Both adjusting wheels are located inside the transmission element. Under the action of the two elastic elements, both adjusting wheels abut against the transmission element and engage in transmission with the transmission element.

6. The intelligent channel flow meter according to claim 5, characterized in that: A crossbar is provided on the support along the length of the channel, and a strip slide rail is provided on the crossbar. The strip slide rail is arranged along the length of the crossbar, and two second sliders are slidably arranged on the strip slide rail. Both second sliders can slide along the length of the crossbar, and two adjusting wheels are respectively rotatably connected to the two second sliders. The two second sliders are respectively connected to one end of the two elastic elements at opposite ends, and two third sliders are disposed between the two elastic elements, with the opposite ends of the two third sliders respectively connected to the opposite ends of the two elastic elements. A transmission rod is vertically arranged between the two third sliders. The lower end of the transmission rod extends vertically downward and is fixedly connected to the mounting plate. Two inclined rods are arranged on both sides of the transmission rod. The lower ends of the two inclined rods are inclined away from the transmission rod. The opposite sides of the two inclined rods abut against the opposite ends of the two third sliders.

7. The intelligent channel flow meter according to claim 6, characterized in that: The upper ends of both inclined rods are hinged to the top of the transmission rod. A fourth slider is slidably connected to the transmission rod along its length. Two support rods are respectively provided between the fourth slider and the two inclined rods on both sides. One end of the support rod is hinged to the middle of the inclined rod, and the other end is hinged to the fourth slider. A second fixing member is provided on the fourth slider for fixing the fourth slider to the transmission rod.

8. A measurement method, characterized in that: The intelligent channel flow meter based on claim 7 includes the following steps: Step 1: Complete the installation and fixation of the bracket. The mounting plate floats on the surface of the liquid in the channel, and the water flow can impact the water turbine to rotate. Step 2: Start the radar measurement unit and data acquisition and processing unit. The water flow impacts the turbine to rotate, and through the transmission component, the reciprocating screw rotates, which in turn drives the radar measurement unit to move back and forth to achieve dynamic measurement. At the same time, the rotation of the turbine transfers mechanical energy to the generator to generate electricity, which is then stored in the battery. Step 3: The data acquisition and processing unit collects the flow velocity and water level data obtained by the radar sensor. Based on the collected flow velocity and water level data, combined with the pre-set channel cross-sectional shape and size, the instantaneous flow rate and cumulative flow rate are calculated using the flow calculation formula. Finally, the processed data is transmitted to the remote monitoring center or host computer system to achieve dynamic monitoring.

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