An intelligent channel flow meter and its measurement method

Abstract

This invention discloses an intelligent channel flow meter and its measurement method, including a radar measurement unit, a data acquisition and processing unit, and a support. A reciprocating lead screw is rotatably connected to the support, and a first slider is fitted on the reciprocating lead 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 the support, and the water turbine is rotatably connected to the mounting plate. The shaft 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 support. The battery is electrically connected to the generator, and also electrically connected to the radar measurement unit and the data acquisition and processing unit. A transmission component is provided between the rotating shaft and the reciprocating lead screw. The purpose of this invention is to solve the technical problems of high cost, poor measurement range, and low energy utilization.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of flow measurement, and particularly relates to an intelligent channel flow meter and a measuring method thereof. BACKGROUND

[0002] Radar flow meters have become the ideal choice for monitoring devices in the field of channel flow measurement due to their non-contact measurement, high precision, and adaptability to complex environments.

[0003] Currently, there is an intelligent channel radar flow meter, which includes a radar measurement unit, a data acquisition and processing unit, and a support for installing the radar measurement unit and the data acquisition and processing unit. The radar measurement unit includes a radar flow rate sensor and a radar water level sensor. The working principle of the radar flow rate sensor is to emit radar waves to the water surface and receive the reflected signals, and to calculate the water flow rate through 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 and thus obtain the water level data. The data acquisition and processing unit is composed of a data acquisition module, a processing module, and a communication module. The data acquisition module is responsible for collecting the flow rate and water level data obtained by the radar sensor. The processing module calculates the instantaneous flow rate and cumulative flow rate by using the flow rate calculation formula based on the collected flow rate and water level data, combined with the pre-set channel cross-sectional shape and size. The communication module is responsible for transmitting the collected data to the remote monitoring center or the upper computer system.

[0004] However, the intelligent channel radar flow meter still has the following defects:

[0005] Firstly, to improve the accuracy of detection, multiple radar measurement units are usually added along the channel width direction on the support. However, this approach significantly increases the use cost of the equipment. Moreover, even if multiple radar measurement units are added, only several fixed positions in the channel width direction can be measured, and dynamic measurement of the flow in the channel width direction cannot be achieved, which still has certain limitations in the measurement range.

[0006] Secondly, the kinetic energy generated by the flow of water is not fully utilized, resulting in low energy utilization rate, which needs to be further optimized in terms of energy utilization. SUMMARY

[0007] In view of the deficiencies of the prior art, the purpose of the present application is to provide an intelligent channel flow meter and a measuring method thereof to solve the technical problems of high equipment use cost caused by adding multiple radar measurement units along the channel width direction on the support, inability to achieve dynamic measurement of the flow in the channel width direction, resulting in a small measurement range, and inability to fully utilize the kinetic energy generated by the flow of water, resulting in a low energy utilization rate.

[0008] One of the present application:

[0009] To achieve the foregoing technical purposes, the technical scheme adopted by the present application comprises: an intelligent channel flowmeter, comprising a radar measurement unit, a data acquisition and processing unit, and a support for installing the radar measurement unit and the data acquisition and processing unit, a reciprocating screw rod being rotatably connected to the support, the reciprocating screw rod being horizontally arranged along the channel width direction, the reciprocating screw rod being located above the channel, a first sliding block being cooperatively arranged on the reciprocating screw rod, the first sliding block being capable of moving back and forth along the reciprocating screw rod by rotating the reciprocating screw rod, the first sliding block being fixedly connected with the radar measurement unit;

[0010] The flowmeter further comprises a power supply unit, the power supply unit comprising a mounting plate, a water turbine, a generator, and a storage battery, the mounting plate being connected with the support, the water turbine being rotatably connected to the mounting plate, the water turbine being vertically arranged on one side of the channel length direction and the lower side of the water turbine being located in the channel liquid surface, the shaft center position of the water turbine being coaxially connected with the input shaft of the generator through a transmission shaft, the generator being mounted on the mounting plate, the storage battery being mounted on the support, the storage battery being electrically connected with the generator, the storage battery being electrically connected with the radar measurement unit and the storage battery being electrically connected with the data acquisition and processing unit;

[0011] A transmission assembly is arranged between the transmission shaft and the reciprocating screw rod, and the reciprocating screw rod can be rotated by the transmission assembly during the rotation of the water turbine driven by the water flow.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] (1) The intelligent channel flowmeter provided by the present application drives the first sliding block and the radar measurement unit to move in the channel width direction by rotating the reciprocating screw rod, thereby realizing measurement at different positions in the channel width direction. Compared with the prior art, multiple radar measurement units do not need to be additionally arranged on the support along the channel width direction, thereby effectively reducing the equipment use cost. At the same time, the radar measurement unit can be moved and measured at the same time during reciprocating movement, thereby realizing dynamic measurement in the channel width direction and improving the comprehensiveness of measurement.

[0014] (2) The intelligent channel flowmeter provided by the present application effectively avoids the problem that the overall flow calculation is inaccurate due to local measurement error. For example, in the case of uneven flow velocity distribution in the channel width direction, mobile measurement can obtain more comprehensive flow velocity data, thereby improving the accuracy of flow measurement.

[0015] (3) The intelligent channel flowmeter provided by the application utilizes the kinetic energy of water flow in the channel to drive the rotation of the water turbine, and then drives the power generator to generate electricity, thereby providing power support for the entire flowmeter, realizing self-sufficiency in energy, and eliminating the need for external power supply, thereby effectively reducing operating costs. In addition, water power generation is a clean and renewable energy utilization method, which meets environmental protection requirements and reduces dependence on traditional energy sources.

[0016] (4) The intelligent channel flowmeter provided by the application realizes the function of water flow driving the rotation of the water turbine to drive the movement of the radar measurement unit, realizes linkage control of the system, and improves the automation level of the system.

[0017] Further, the transmission assembly comprises a first transmission wheel and a second transmission wheel, the first transmission wheel is coaxially fixedly connected to the rotating shaft, and the first transmission wheel and the second transmission wheel are drivingly connected through a transmission member;

[0018] The transmission assembly comprises a gear, a disc, and a fan-shaped external gear rack, the gear is coaxially fixedly connected to the reciprocating screw rod, the disc is rotationally connected to the support, the second transmission wheel is coaxially fixedly connected to the disc, the external gear rack is coaxially arranged on the disc, and the external gear rack can be engaged with the gear during rotation of the disc.

[0019] Further, the external gear rack is detachably connected to the disc, the external gear rack can slide along the circumferential direction of the disc, and a plurality of the external gear racks can be spliced together after sliding along the disc, and the external gear rack is provided with a first fixing member for fixing the external gear rack to the disc after sliding.

[0020] Further, the disc has a hollow structure.

[0021] Further, the mounting plate is slidingly connected to the support in the vertical direction, and an air bag is arranged below the mounting plate, so that the mounting plate can float above the liquid surface of the channel through the air bag.

[0022] The support is provided with two adjusting wheel sets, the two adjusting wheel sets are symmetrically distributed about the line connecting the first transmission wheel axis and the second transmission wheel axis, the adjusting wheel set comprises an adjusting wheel and an elastic member, the adjusting wheel is slidingly connected to the support along the length direction of the channel, the elastic member is arranged between the adjusting wheel and the support, and the two adjusting wheels are located on the inner side of the transmission member, under the action of the two elastic members, the two adjusting wheels abut against the transmission member and are drivingly matched with the transmission member.

[0023] Further, the support is provided with a cross bar along the length direction of the channel, the cross bar is provided with a strip-shaped sliding rail along the length direction of the cross bar, two second sliding blocks are slidingly arranged on the strip-shaped sliding rail, and the two second sliding blocks can slide along the length direction of the cross bar, and two adjusting wheels are rotationally connected to the two second sliding blocks respectively;

[0024] The two second sliding blocks are connected to one end of two elastic members respectively, two third sliding blocks are arranged in the middle of the two elastic members, and the two third sliding blocks are connected to the opposite end of the two elastic members respectively.

[0025] A transmission rod is vertically arranged in the middle of the two third sliding blocks, the lower end of the transmission rod is fixedly connected to the mounting plate after vertically extending downward, two inclined rods are arranged on the two sides of the transmission rod respectively, the lower ends of the two inclined rods are inclinedly arranged away from the transmission rod, and the opposite sides of the two inclined rods are abutted with the opposite end of the two third sliding blocks respectively.

[0026] Further, the upper ends of the two inclined rods are hingedly connected to the top of the transmission rod, a fourth sliding block is slidingly connected to the transmission rod along the length direction of the transmission rod, two support rods are arranged between the two sides of the fourth sliding block and the two inclined rods respectively, one end of the support rod is hingedly connected to the middle of the inclined rod, the other end is hingedly connected to the fourth sliding block, and the fourth sliding block is provided with a second fixing member for fixing the fourth sliding block on the transmission rod.

[0027] The second aspect of the application:

[0028] A measurement method, comprising the following steps:

[0029] Step one, complete the installation and fixation of the support, the mounting plate floats on the water surface of the channel, and the water flow can impact the water turbine to rotate;

[0030] Step two, start the radar measurement unit and the data acquisition and processing unit, the water flow impacts the water turbine to rotate, and drives the reciprocating wire rod to rotate through the transmission assembly, so as to drive the radar measurement unit to move back and forth, realize dynamic measurement, at the same time, the water turbine rotates to transmit mechanical energy to the generator to generate electricity and store electrical energy in the storage battery;

[0031] Step three, the data acquisition and processing unit collects the flow rate and water level data obtained by the radar sensor, and according to the collected flow rate and water level data, combines the pre-set channel section shape and size, uses the flow calculation formula to calculate the instantaneous flow and the cumulative flow, and finally transmits the processed data to the remote monitoring center or the upper computer system to realize dynamic monitoring. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0033] Figure 1 Structure diagram of an embodiment of the present application Figure 1 ;

[0034] Figure 2 Structure diagram of an embodiment of the present application Figure 2 ;

[0035] Figure 3 Structure diagram of an embodiment of the present application Figure 3 ;

[0036] Figure 4 Structure diagram of an embodiment of the present application Figure 3 ;

[0037] Figure 5 Disassembly diagram of a disc part

[0038] Figure 6 Structure diagram of a transmission rod part

[0039] Reference signs:

[0040] Radar measurement unit 1, data acquisition and processing unit 2, support 3, reciprocating screw rod 4, first sliding block 5, mounting plate 6, water turbine 7, generator 8, rotating shaft 9, first transmission wheel 10, second transmission wheel 11, transmission member 12, gear 13, disc 14, external rack 15, first fixing member 16, air bag 17, adjusting wheel 18, elastic member 19, cross rod 20, second sliding block 21, third sliding block 22, transmission rod 23, inclined rod 24, support rod 25, fourth sliding block 26, second fixing member 27. DETAILED DESCRIPTION

[0041] In view of the deficiencies in the prior art, the present inventors have obtained the technical solutions of the present application through long-term research and a large number of practices. The technical solutions, the implementation process and principles thereof will be further explained in the following description in combination with the accompanying drawings of the embodiments of the present application and specific implementation cases.

[0042] It should be noted that the embodiments described below by way of example are merely illustrative and are not understood to limit the present application, and the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, any alternative, modification, equivalent method and scheme defined by the claims of the present application are covered by the spirit, principles and scope of the present application, and all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0043] In the description of the present application, the terms "first", "second", "third" and the like do not indicate any order, number or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" and the like do not indicate a number limitation, but indicate the existence of at least one. The terms "include" or "contain" and the like mean that the components or objects appearing before "include" or "contain" cover the components or objects listed after "include" or "contain" and their equivalents, and do not exclude other components or objects. The terms "connected" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0044] In the description of the present application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, when using two sides, outer sides, upper and lower position terms, it should be understood that they are only used for the convenience of understanding and description, considering that the structure can be oriented to other positions.

[0045] In the description of the present application, unless otherwise explicitly specified and limited, the technical terms or scientific terms used should be understood as the usual meaning understood by those skilled in the art in the field to which the present application belongs, and the terms "mounting", "connecting", "connecting" and the like should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection, or it can be in contact connection or integral connection; For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] One of the present application:

[0047] Please refer to Figures 1-6The application provides a technical scheme: an intelligent channel flow meter, comprising a radar measurement unit 1, a data acquisition and processing unit 2, and a support 3 for mounting the radar measurement unit 1 and the data acquisition and processing unit 2.

[0048] The support 3 provides mounting support for the radar measurement unit 1 and the data acquisition and processing unit 2, and ensures that they can be stably fixed above the channel. The support 3 is usually made of a solid metal material and has certain strength and rigidity, and can bear the weight of each component and the vibration and impact that may occur during operation.

[0049] The radar measurement unit 1 comprises a radar flow rate sensor and a radar water level sensor. The working principle of the radar flow rate sensor is to emit radar waves to the water surface and receive the reflected signals, and to calculate the water flow rate through 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 and obtain the water level data. The data acquisition and processing unit 2 is composed of a data acquisition module, a processing module, and a communication module. The data acquisition module is responsible for collecting the flow rate and water level data obtained by the radar sensor. The processing module calculates the instantaneous flow rate and cumulative flow rate by using the flow rate calculation formula according to the collected flow rate and water level data, in combination with the pre-set channel cross-sectional shape and size. The communication module is responsible for transmitting the processed data to a remote monitoring center or an upper computer system.

[0050] The reciprocating screw rod 4 is rotatably connected to the support 3 and is arranged horizontally along the channel width direction. The reciprocating screw rod 4 is located above the channel. A first sliding block 5 is arranged on the reciprocating screw rod 4 in a matching manner. The first sliding block 5 can move back and forth along the reciprocating screw rod 4 by rotating the reciprocating screw rod 4. The first sliding block 5 is fixedly connected to the radar measurement unit 1. The reciprocating screw rod 4 provides a track for the horizontal movement of the first sliding block 5. The rotation of the reciprocating screw rod 4 drives the first sliding block 5 to move back and forth along the channel width direction, so that the radar measurement unit 1 can move and measure within the channel width range. The first sliding block 5 is a component connecting the radar measurement unit 1 and the reciprocating screw rod 4, and converts the rotational motion of the reciprocating screw rod 4 into the linear reciprocating motion of the first sliding block 5, thereby driving the radar measurement unit 1 to move in the channel width direction and realize the moving measurement function. The first sliding block 5 has a structure matching the screw thread of the reciprocating screw rod 4 inside. When the reciprocating screw rod 4 rotates, the interaction force between the internal structure of the first sliding block 5 and the screw thread will make the first sliding block 5 move along the screw rod. Since the first sliding block 5 is fixedly connected to the radar measurement unit 1, the radar measurement unit 1 will move with the first sliding block 5

[0051] The flow meter further comprises a power supply unit, which comprises a mounting plate 6, a water turbine 7, a generator 8 and a storage battery, the mounting plate 6 is connected with the support 3, the water turbine 7 is rotationally connected to the mounting plate 6, the water turbine 7 is vertically arranged on one side of the channel in the length direction and the lower side of the water turbine 7 is located in the liquid surface of the channel. The mounting plate 6 provides a mounting platform for the water turbine 7, so that the position of the water turbine 7 in the channel is correct, so that the water turbine 7 can be effectively driven by the water flow to rotate. In other words, the blades of the water turbine 7 should face the flow direction of the channel, so that the blades can rotate under the impact of the water flow. The water turbine 7 serves as an energy conversion device, which 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 the water turbine 7 to rotate around its axis, providing power for the subsequent power generation process.

[0052] The axis of the water turbine 7 is coaxially connected to the input shaft of the generator 8 through a rotating shaft 9, and the generator 8 is installed on the mounting plate 6. The mechanical energy transmitted by the water turbine 7 is converted into electrical energy, and the rotating motion of the water turbine 7 is converted into electrical energy output through the electromagnetic induction principle inside the generator 8, providing power support for the entire flow meter.

[0053] The storage battery is installed on the support 3 and is electrically connected between the generator 8, the radar measurement unit 1 and the data acquisition and processing unit 2. The storage battery stores the electrical energy generated by the generator 8 and provides stable power supply for the radar measurement unit 1, the data acquisition and processing unit 2 and other devices when needed. The storage battery is connected to the generator 8 through electrical connection, and when the generator 8 generates electricity, the electrical energy is stored in the storage battery through the charging circuit, and when the radar measurement unit 1, the data acquisition and processing unit 2 and other devices need electricity, the storage battery releases the stored electrical energy through the discharging circuit to supply power to the devices.

[0054] A transmission assembly is arranged between the rotating shaft 9 and the reciprocating screw rod 4, and through the transmission assembly, the reciprocating screw rod 4 can be rotated during the rotation of the water turbine 7 driven by the water flow. During the rotation of the water turbine 7, the rotating power of the water turbine 7 is transmitted to the reciprocating screw rod 4, so that the reciprocating screw rod 4 rotates, thereby realizing the function of driving the radar measurement unit 1 to move by the rotation of the water turbine 7 driven by the water flow, realizing the effective utilization of energy and the linkage control of the system.

[0055] In the specific implementation process of the above scheme:

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] The outer rack 15 is coaxially arranged on the disc 14, and the outer rack 15 can be engaged with the gear 13 during rotation of the disc 14. The outer rack 15 has a tooth shape matched with the gear 13. When the disc 14 rotates, the outer rack 15 rotates together with the disc 14, and when the teeth of the outer rack 15 contact the teeth of the gear 13, the engagement force is generated between the two, so that the gear 13 starts to rotate, and when the teeth of the outer rack 15 are separated from the teeth of the gear 13, the gear 13 loses the effect of the engagement force, and the gear 13 changes from rotation to stillness, and then rotates again when the outer rack 15 is re-engaged with the gear 13. The intermittent rotation of the gear 13 is realized by such an arrangement, which will make the reciprocating screw rod 4 rotate intermittently, so that the first sliding block 5 will be stationary after sliding a distance and then continue to slide. When it is stationary, the radar measurement unit 1 also remains stationary.

[0063] The above scheme has the following beneficial effects:

[0064] The engagement and disengagement characteristics of the outer rack 15 and the gear 13 determine that the radar measurement unit 1 has both a dynamic measurement stage of moving with the reciprocating screw rod 4 and a fixed-point observation stage of being stationary at a fixed point. The combination of dynamic measurement and fixed-point observation fully utilizes the advantages of the two measurement methods. Dynamic measurement can quickly obtain overall data trends in the channel width direction and understand the general changes of flow rate and liquid level, and fixed-point observation can make in-depth and accurate measurement at the fixed point and obtain more detailed and accurate data. This combination can more comprehensively and accurately grasp the flow conditions of the channel and provide more reliable basis for subsequent water resource management and scheduling.

[0065] In the embodiment, the outer rack 15 is detachably connected to the disc 14, and the outer rack 15 can slide along the circumferential direction of the disc 14, and a plurality of outer racks 15 can be spliced together after sliding along the disc 14. The outer rack 15 is provided with a first fixing member 16 for fixing the outer rack 15 to the disc 14 after sliding.

[0066] Specifically, a clamping groove is formed on the inner side of the outer rack 15, and the clamping groove is clamped with the edge part of the disc 14, so that the outer rack 15 can slide along the outer edge of the disc 14. The first fixing member 16 is a first fixing bolt, which is rotationally arranged on the side wall of the outer rack 15. By rotating the first fixing bolt, one end of the first fixing bolt is penetrated through the outer rack 15 and abuts against the disc surface of the disc 14 to form a fixing.

[0067] The above scheme has the following beneficial effects:

[0068] Firstly, the outer rack 15 is detachably connected to the disc 14, so that when the outer rack 15 is worn, damaged or the like, it can be conveniently and quickly detached from the disc 14 and replaced.

[0069] Secondly, the measurement scheme can be adjusted according to different water flow states.

[0070] ① In the steady water flow state, the water flow speed is relatively slow, the water surface is relatively calm, and the data obtained by measurement has small fluctuations. At this time, the measurement efficiency should be prioritized, and because the water flow speed is slow, the rotating speed of the disc is relatively slow. In this case, the number of fixed-point measurements and the fixed-point measurement time should be relatively reduced.

[0071] By splicing the outer gear rack 15, the number of teeth is increased, the number of rotations of the gear 13 is increased, the number of rotations of the reciprocating screw rod 4 is increased, and finally the moving distance of the first sliding block 5 is increased, the distance interval between adjacent fixed-point measurement positions is increased, and the number of fixed points is correspondingly reduced. This adjustment avoids excessive measurement in the stable data area.

[0072] In addition, after splicing the outer gear rack 15, the non-engagement time of the outer gear rack 15 and the gear 13 is reduced, which shortens the residence time of the radar measurement unit 1 at each fixed point, accelerates the measurement progress, and completes the measurement task of the channel in a shorter time, improving the measurement efficiency.

[0073] ② In the faster water flow, the flow speed and water surface fluctuation are large, and the flow speed and water level difference at different positions are obvious. At this time, the measurement accuracy should be prioritized, and because the water flow speed is fast, the rotating speed of the disc is relatively fast. In this case, the number of fixed-point measurements and the fixed-point measurement time should be relatively increased.

[0074] By reducing the number of spliced outer gear racks 15, the number of rotations of the gear 13 is reduced, the number of rotations of the reciprocating screw rod 4 is also correspondingly reduced, and then the moving distance of the first sliding block 5 is shortened, the distance between every two adjacent fixed points is reduced, and the number of fixed-point measurements is correspondingly increased. Increasing the number of fixed-point measurements can more carefully capture the flow speed and water level changes at different positions in the channel, improving the density and accuracy of the measurement data.

[0075] In addition, in the faster water flow environment, the water flow changes rapidly, and longer fixed-point measurement time is needed to stabilize the data collection to reduce the measurement error caused by water flow fluctuation. By reducing the number of spliced outer gear racks 15, the number of teeth of the outer gear rack 15 is reduced, the non-engagement time of the outer gear ring and the gear 13 is increased, so that the gear 13 has more pause time during rotation, that is, the residence time of the radar measurement unit 1 at each fixed point is prolonged. Prolonging the fixed-point measurement time can give the radar measurement unit 1 enough time to measure the water flow at the current position, improving the accuracy and reliability of the measurement results.

[0076] In this embodiment, the disc 14 is hollow to reduce its weight and improve the transmission effect. A too heavy disc 14 will increase the load of the transmission system, resulting in more energy being consumed to overcome the inertia of the disc 14 during starting and running. After the disc 14 is made hollow, its weight is reduced, and the transmission effect is improved.

[0077] In this embodiment, the mounting plate 6 is slidingly connected to the support 3 along the vertical direction, and the air bag 17 is arranged below the mounting plate 6. The mounting plate 6 can float on the water surface of the channel by the air bag 17. The mounting plate 6 can float on the water surface of the channel and float up and down following the change of the water level by the sliding connection of the mounting plate 6 to the support 3 and the cooperation between the mounting plate 6 and the air bag 17. Thus, the water turbine 7 can move up and down with the water level, so that the blades of the water turbine 7 can always be in a good position to better receive the impact of the water flow.

[0078] The support 3 is provided with two adjusting wheel sets symmetrically distributed about the line connecting the shaft centers of the first transmission wheel 10 and the second transmission wheel 11. Each adjusting wheel set includes an adjusting wheel 18 and an elastic member 19. The adjusting wheel 18 is slidingly connected to the support 3 along the length direction of the channel. The elastic member 19 is arranged between the adjusting wheel 18 and the support 3. Both the adjusting wheels 18 are located inside the transmission member 12 and abut against the transmission member 12 and are in transmission cooperation with the transmission member 12 under the action of the two elastic members 19.

[0079] The main function of the adjusting wheel 18 is to tension the transmission member 12 to keep the transmission member 12 in proper tension during transmission, effectively avoiding the loosening and slipping of the transmission member 12, so that the transmission has certain stability and reliability. At the same time, the adjusting wheel 18 can slide on the support 3 along the length direction of the channel to adapt to the length change of the transmission member 12 under different conditions. For example, when the transmission member 12 is elongated due to the upward movement of the first transmission wheel 10 (the water level of the channel is increased, the mounting plate 6 moves upward with the water level under the action of the air bag 17, and then the first transmission wheel 10 moves upward), the two adjusting wheels 18 will slide away from each other under the action of the two elastic members 19 to maintain the tension of the transmission member 12. Conversely, when the transmission member 12 is contracted due to the downward movement of the first transmission wheel 10 (the water level of the channel is decreased, the mounting plate 6 moves downward with the water level under the action of the air bag 17, and then the first transmission wheel 10 moves downward), the two adjusting wheels 18 will slide relative to each other, and the elastic force of the two elastic members 19 will be compressed.

[0080] The above scheme has the following beneficial effects:

[0081] ①, The buoyancy generated by the air bag 17 can make the mounting plate 6 float on the surface of the channel, and can float up and down with the change of the liquid level, and further drive the water turbine 7 to move. In this way, the water turbine 7 blades can always be in a relatively ideal position, so as to better withstand the impact of the water flow, help to improve the energy conversion efficiency of the water turbine 7, convert more kinetic energy of the water flow into mechanical energy, increase the power generation or meet other power requirements, and thus improve the energy utilization efficiency of the whole system.

[0082] ②, Regardless of the change of the liquid level of the channel, the water turbine 7 can automatically adjust the position without frequent manual intervention. This feature improves the adaptability and automation of the system, effectively reducing the labor cost.

[0083] ③, Since the water turbine 7 blades can always be in a relatively suitable position, it can effectively avoid the situation that the water turbine 7 is completely submerged in the channel liquid surface or completely exposed to the liquid surface, so that the water flow cannot impact the water turbine 7 to rotate, and the power generation and transmission failure are reduced.

[0084] ④, The adjusting wheel 18 is abutted on the transmission member 12 under the action of the elastic member 19, and is in transmission cooperation with the transmission member 12, which plays a tensioning role on the transmission member 12, effectively avoiding the loosening and slipping of the transmission member 12, so that the transmission has certain stability and reliability.

[0085] ⑤, The symmetrical distribution of the adjusting wheel group can make the transmission member 12 more uniform in force during transmission.

[0086] In the embodiment, the cross bar 20 is arranged on the support 3 along the length direction of the channel, and a strip-shaped slide rail is arranged on the cross bar 20, the strip-shaped slide rail is arranged along the length direction of the cross bar 20, two second sliding blocks 21 are slidingly arranged on the strip-shaped slide rail, the two second sliding blocks 21 can slide along the length direction of the cross bar 20, and the two adjusting wheels 18 are respectively rotationally connected to the two second sliding blocks 21. The second sliding block 21 is rotationally connected with the adjusting wheel 18 on one side, provides support and rotation axis for the adjusting wheel 18, and enables the adjusting wheel 18 to normally rotate during transmission; on the other side, the second sliding block 21 can slide on the strip-shaped slide rail, drive the adjusting wheel 18 to move along the length direction of the cross bar 20, so as to adapt to the change of the length of the transmission member 12, and realize the tensioning adjustment of the transmission member 12.

[0087] The opposite ends of the two second sliding blocks 21 are respectively connected with one end of the two elastic members 19, and the two third sliding blocks 22 are arranged in the middle of the two elastic members 19. The opposite ends of the two third sliding blocks 22 are respectively connected with the opposite ends of the two elastic members 19. Specifically, the elastic member 19 is a spring, the opposite ends of the two second sliding blocks 21 are respectively fixedly connected with one end of the two springs, and the opposite ends of the two third sliding blocks 22 are respectively fixedly connected with the opposite ends of the two springs.

[0088] Two third sliders 22 are vertically arranged between the transmission rod 23, the lower end of the transmission rod 23 is vertically downwardly extended and fixedly connected with the mounting plate 6, since the transmission rod 23 is fixedly connected with the mounting plate 6, when the mounting plate 6 is floated up and down with the liquid level changes under the action of the air bag 17, the transmission rod 23 will be synchronously moved up and down.

[0089] Two inclined rods 24 are arranged on both sides of the transmission rod 23, the lower ends of the two inclined rods 24 are inclinedly arranged away from the transmission rod 23, and the opposite sides of the two inclined rods 24 are respectively abutted against the opposite ends of the two third sliders 22.

[0090] When the transmission rod 23 moves upward, the inclined rod 24 moves upward, since the inclined rod 24 is inclinedly arranged, it can push the third slider 22 abutted against to move away from the transmission rod 23 along the strip-shaped slide rail, so that the elastic member 19 connected between the second slider 21 and the third slider 22 is compressed. After the elastic member 19 is compressed, its elastic force increases, which is transmitted to the adjusting wheel 18 through the second slider 21, so that the adjusting wheel 18 moves away from the transmission rod 23, thereby increasing the tension of the transmission member 12. If the adjustment is only relied on the elastic force of the elastic member 19, after the elastic member 19 drives the adjusting wheel 18 to move, the elastic force will be smaller, and the elastic force fluctuation range is larger, and the tension of the transmission member 12 changes more. The pushing action of the inclined rod 24 can actively and quickly push the third slider 22 to move, and respond to the elongation of the transmission member 12 in advance, so as to play a certain compensation effect, so that the elastic member 19 has a smaller elastic force fluctuation range applied to the adjusting wheel 18 in the adjustment process, the adjustment is more stable, the tension fluctuation range of the transmission member 12 is smaller, and the tension of the transmission member 12 is more stable.

[0091] Similarly, when the transmission rod 23 moves downward, the inclined rod 24 moves downward. 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 leaves a space for the third slider 22 to move towards the transmission rod 23. Since the transmission member 12 will press the adjusting wheel 18 when the mounting plate 6 moves downward, so that the adjusting wheel 18 moves towards the transmission rod 23, if the third slider 22 is not left with a space to move towards the transmission rod 23, the elastic member 19 will be further compressed, the elastic force of the elastic member 19 increases, and the elastic force fluctuation range is large. The inclined rod 24 can play a certain compensation effect on the elastic member 19, so that the elastic member 19 has a smaller elastic force fluctuation range applied to the adjusting wheel 18, the tension fluctuation range of the transmission member 12 is smaller, and the tension of the transmission member 12 is more stable.

[0092] In the embodiment, the upper ends of the two inclined rods 24 are hingedly connected to the top of the transmission rod 23, a fourth sliding block 26 is slidably connected to the transmission rod 23 along the length direction of the transmission rod 23, two support rods 25 are respectively arranged between the fourth sliding block 26 and the two inclined rods 24 on the two sides of the fourth sliding block 26, one end of each support rod 25 is hingedly connected to the middle of the inclined rod 24, and the other end of each support rod 25 is hingedly connected to the fourth sliding block 26, and the fourth sliding block 26 is provided with a second fixing member 27 for fixing the fourth sliding block 26 on the transmission rod 23. Through the above structure, the angle between the inclined rod 24 and the transmission rod 23 can be adjusted. In this way, the movement of the third sliding block 22 can better adapt to the elongation or shortening of the transmission member 12, and the fluctuation range of the elastic force of the elastic member 19 during the adjustment process is smaller, so that the tension of the transmission member 12 is more stable.

[0093] Specifically, the second fixing member 27 is a second fixing bolt, the fourth sliding block 26 is rotatably provided with the second fixing bolt, and the second fixing bolt is abutted against the transmission rod 23 through the fourth sliding block 26 to form a fixing by rotating the second fixing bolt.

[0094] The second fixing member 27 is a second fixing bolt, the fourth sliding block 26 is rotatably provided with the second fixing bolt, and the second fixing bolt is abutted against the transmission rod 23 through the fourth sliding block 26 to form a fixing by rotating the second fixing bolt.

[0095] A measurement method, comprising the following steps:

[0096] Step one, complete the installation and fixation of the support 3, the installation plate 6 floats on the channel liquid surface, and the water flow can impact the water turbine 7 to rotate;

[0097] Step two, start the radar measurement unit 1 and the data acquisition and processing unit 2, the water flow impacts the water turbine 7 to rotate, and drives the reciprocating wire rod 4 to rotate through the transmission assembly, thereby driving the radar measurement unit 1 to move back and forth, realizing dynamic measurement, at the same time, the water turbine 7 rotates to transmit mechanical energy to the generator 8 to generate electricity and store electrical energy in the storage battery;

[0098] Step three, the data acquisition and processing unit 2 collects the flow rate and water level data obtained by the radar sensor, and according to the collected flow rate and water level data, combines the pre-set channel cross-sectional shape and size, uses the flow calculation formula to calculate the instantaneous flow and the cumulative flow, and finally transmits the processed data to the remote monitoring center or the upper computer system to realize dynamic monitoring.

[0099] It should be understood that the above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, and any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. An intelligent channel flowmeter, comprising a radar measuring unit, a data acquisition and processing unit and a support for mounting the radar measuring unit and the data acquisition and processing unit, characterized in that: The support is rotationally connected with a reciprocating wire rod, the reciprocating wire rod is horizontally arranged along the width direction of the channel, the reciprocating wire rod is located above the channel, a first sliding block is arranged on the reciprocating wire rod in a matching mode, the first sliding block can move back and forth along the reciprocating wire rod by rotating the reciprocating wire rod, and the first sliding block is fixedly connected with the radar measuring unit; 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 water turbine is vertically arranged on one side of the channel in the length direction and the lower side of the water turbine is located in the liquid surface of the channel, the shaft center of the water turbine is coaxially connected with the input shaft of the generator through a rotating shaft, the generator is mounted on the mounting plate, the storage battery is mounted on the support, the storage battery is electrically connected with the generator, and the storage battery is electrically connected with the radar measuring unit and the data acquisition and processing unit; The rotating shaft and the reciprocating wire rod are provided with a transmission assembly, and the reciprocating wire rod can be rotated during the rotation of the water turbine driven by the water flow through the transmission assembly; The transmission assembly comprises a first transmission wheel and a second transmission wheel, the first transmission wheel is coaxially fixedly connected to the rotating shaft, and the first transmission wheel and the second transmission wheel are transmissionally connected through a transmission member; The transmission assembly comprises a gear, a disc and a fan-shaped external gear rack, the gear is coaxially fixedly connected to the reciprocating wire rod, the disc is rotationally connected to the support, the second transmission wheel is coaxially fixedly connected to the disc, and the external gear rack is coaxially arranged on the disc; the external gear rack can be engaged with the gear during the rotation of the disc; The external gear rack is detachably connected to the disc, the external gear rack can slide along the circumferential direction of the disc, and a plurality of external gear racks can be combined together after sliding along the disc, and a first fixing member for fixing the external gear rack to the disc after sliding is arranged on the external gear rack; The mounting plate is slidingly connected to the support in the vertical direction, an air bag is arranged below the mounting plate, and the mounting plate can float on the liquid surface of the channel through the air bag; Two adjusting wheel sets are arranged on the support and symmetrically distributed about the line connecting the shaft centers of the first transmission wheel and the second transmission wheel, each adjusting wheel set comprises an adjusting wheel and an elastic member, the adjusting wheel is slidingly connected to the support along the length direction of the channel, and the elastic member is arranged between the adjusting wheel and the support; both the adjusting wheels are located inside the transmission member, and both the adjusting wheels abut against the transmission member and are transmissionally matched with the transmission member under the action of the two elastic members; A cross bar is arranged on the support along the length direction of the channel, a strip-shaped slide rail is arranged on the cross bar and arranged along the length direction of the cross bar, two second sliding blocks are slidingly arranged on the strip-shaped slide rail, both the second sliding blocks can slide along the length direction of the cross bar, and both the adjusting wheels are rotationally connected to the two second sliding blocks, respectively. Two second sliders are connected with one end of two elastic members respectively, two third sliders are arranged in the middle of two elastic members, and two third sliders are connected with the opposite end of two elastic members respectively. Two third sliders are vertically arranged in the middle of the transmission rod, and the lower end of the transmission rod is fixedly connected with the mounting plate after vertically extending downward, two inclined rods are arranged on the both sides of the transmission rod, and the lower end of two inclined rods is arranged in the direction away from the transmission rod, and the opposite side of two inclined rods is abutted with the opposite end of two third sliders respectively. The upper end of two inclined rods is hinged with the top of the transmission rod, the fourth slider is slidably connected with the transmission rod along the length direction of the transmission rod, two support rods are arranged between the both sides of the fourth slider and two inclined rods respectively, one end of the support rod is hinged with the middle of the inclined rod, and the other end is hinged with the fourth slider, and the fourth slider is provided with a second fixing member for fixing the fourth slider on the transmission rod.

2. The intelligent channel flow meter of claim 1, wherein: The disc is a hollow structure.

3. A method of measurement, characterized by: The intelligent channel flowmeter based on the above claim 1 comprises the following steps. Step one, complete the installation and fixation of the support, the mounting plate floats on the liquid surface of the channel, and the water flow can impact the water turbine to rotate; Step two, start the radar measurement unit and the data acquisition and processing unit, the water flow impacts the water turbine to rotate, and drives the reciprocating wire rod to rotate through the transmission assembly, thereby driving the radar measurement unit to move back and forth, realizing dynamic measurement, at the same time, the water turbine transmits mechanical energy to the generator to generate electricity and stores electrical energy in the storage battery; Step three, the data acquisition and processing unit collects the flow rate and water level data obtained by the radar sensor, and according to the collected flow rate and water level data, combines the pre-set channel section shape and size, uses the flow calculation formula to calculate the instantaneous flow and the cumulative flow, and finally transmits the processed data to the remote monitoring center or the upper computer system to realize dynamic monitoring.

Images