Water flow parameter measuring method

Abstract

The invention relates to the technical field of water flow parameter measurement, and discloses a water flow parameter measurement method, and provides a measurement frame, the upper part of the measurement frame is provided with an upper rod, the upper rod is provided with a flow velocity sensor, a depth sensor and a flow direction sensor, and the upper rod is internally provided with a data collector; the top of the upper rod is provided with a connector, the bottom of the upper rod extends downwards to form two lower pieces, swing pieces are hinged to the outer sides of the two lower pieces respectively to form hinge positions, and torsional springs are arranged at the hinge positions. The data collector is connected to the connector through a rope and is electrically connected with an external controller through a cable; the measuring frame is put down into water flow, after the measuring frame stands in the water flow and is adjusted for set time, the flow velocity sensor measures flow velocity data of the water flow, the depth sensor measures depth data of the water flow, the flow direction sensor measures flow direction data of the water flow, the data collector collects the flow velocity data, the depth data and the flow direction data, and water flow parameters are formed. Water flow parameters are transmitted to the controller through the cable.

Description

Technical Field

[0001] This invention patent relates to the technical field of water flow parameter measurement, and more specifically, to a method for measuring water flow parameters. Background Technology

[0002] Accurate measurement of flow parameters is crucial in fields such as water conservancy engineering, environmental protection, hydrological monitoring, and shipping management. Flow parameters, including velocity, depth, and direction, are fundamental data for assessing flow conditions, predicting hydrodynamic characteristics, analyzing water pollution diffusion, and designing flood control and drainage projects.

[0003] In existing technologies, methods for measuring water flow parameters include mechanical current meters, buoy methods, or acoustic Doppler current profilers. While mechanical current meters have a simple measurement principle, they are cumbersome to operate, easily affected by environmental factors, and difficult to achieve continuous, real-time monitoring. Buoy methods rely on manual operation, which is not only time-consuming and labor-intensive but also makes it difficult to guarantee the continuity and accuracy of data. High-precision instruments such as ADCP can provide relatively accurate measurement results, but their equipment costs are high, and their adaptability to complex flow field environments is limited. Summary of the Invention

[0004] The purpose of this invention is to provide a method for measuring water flow parameters, aiming to solve the problem of cumbersome operation in the prior art for measuring water flow parameters.

[0005] The present invention is implemented as follows: a method for measuring water flow parameters, providing a measuring frame, the upper part of which has an upper rod arranged in a longitudinal strip, the upper rod being equipped with a flow velocity sensor for measuring water flow velocity, a depth sensor for measuring water flow depth, and a flow direction sensor for measuring water flow direction, and a data acquisition device being provided in the upper rod; The top of the upper rod has a connector for connecting to a rope. The bottom of the upper rod extends downwards with two longitudinally shaped lower plates that swing towards or away from each other. The two lower plates are arranged at intervals in the same direction, with a lower gap between them. The lower plates extend in the same direction as the upper rod. The upper end of the lower plate is hinged to the bottom of the upper rod, and the lower end of the lower plate extends downwards. The lower gap is connected to an elastic structure that limits the swing range of the two lower plates. The outer sides of the two lower plates are respectively connected to oscillating plates that are inclined and swing relative to or away from the lower plates. The upper end of the oscillating plate is hinged to the outer side of the lower plate to form a hinge position. The hinge position is provided with a torsion spring to limit the swing range of the oscillating plate relative to the lower plate. There is an oscillation interval between the oscillating plate and the lower plate. The width direction of the oscillating plate is arranged in the same direction as the width direction of the lower plate. The data acquisition unit is electrically connected to an external controller via a cable, using a rope to connect to the connector head. The measuring frame is lowered into the water flow, and after the measuring frame has been stationary in the water flow for a set time, the flow velocity sensor measures the flow velocity data, the depth sensor measures the flow depth data, and the flow direction sensor measures the flow direction data. The data acquisition unit collects the flow velocity data, depth data, and flow direction data to form water flow parameters, which are then transmitted to the controller via a cable.

[0006] Optionally, the flow velocity sensor includes a rotating ring sleeved on the outer periphery of the upper rod and rotatably arranged. The outer periphery of the rotating ring is provided with multiple blades, which are arranged at intervals along the circumference of the rotating ring. After the measuring frame is placed in the water flow, the flow of the water impacts the blades, causing the rotating ring to rotate synchronously. The data acquisition device collects the rotation data of the rotating ring and synchronously converts it into the flow velocity data of the water flow.

[0007] Optionally, the connector is rotatably connected to the top of the upper rod. When the measuring frame is placed in the water channel, the measuring frame is suspended in the water flow. When the measuring frame is impacted by the water flow, the upper rod rotates relative to the connector.

[0008] Optionally, the connector has horizontally extending, plate-shaped top balance plates on both sides. The top balance plates are arranged perpendicularly to the upper rod, and multiple flexible buffer strips extend downward from the bottom of the top balance plates. When the measuring frame is placed in the water flow, the top balance plates are horizontally suspended, forming a top balance for the measuring frame, and the multiple buffer strips sway with the impact of the water flow.

[0009] Optionally, the interior of the top balance plate is hollow, forming a flat hollow area, which is arranged horizontally along the top balance plate; the top balance plate has multiple top water-permeable holes arranged vertically, which are isolated from the hollow area; when the measuring frame is placed in water flow, the water flows through the top water-permeable holes, buffering the longitudinal impact of the water flow on the top balance plate.

[0010] Optionally, the bottom of the upper rod is provided with a counterweight plate arranged horizontally and rotating. When the measuring frame is placed in the water flow, the counterweight plate applies downward pressure to the measuring frame, and when the impact force of the water flow on the counterweight plate exceeds a set value, the counterweight plate rotates horizontally.

[0011] Optionally, the bottom of the upper rod is formed with a transversely arranged portion, and the transverse portion has a transverse cavity that penetrates the outer periphery of the transverse portion to form an outer periphery opening; The transverse cavity has a longitudinally arranged longitudinal shaft in the middle, the counterweight plate is movably placed in the transverse cavity, and the longitudinal shaft passes through the middle of the counterweight plate and is rotatably connected to the counterweight plate. When the measuring frame is placed in the water flow, the water flows into the transverse cavity through the outer peripheral opening and exits from the transverse cavity through the outer peripheral opening; Optionally, the counterweight disk is disc-shaped, and there is a flow-through gap between the outer periphery of the counterweight disk and the inner wall of the transverse cavity. The outer periphery of the counterweight disk is serrated and has a serrated ring, which is arranged around the circumference of the counterweight disk. When the measuring frame is placed in the water flow, the water flows through the flow-through gap through the outer periphery opening.

[0012] Optionally, the two sides of the lateral portion extend outward to form two laterally arranged central balancing plates, and the two central balancing plates extend in the same direction as the two top balancing plates respectively; the central balancing plate is provided with a central water-permeable hole arranged vertically, the central water-permeable hole is strip-shaped and extends along the length direction of the central balancing plate. When the measuring frame is placed in the water flow, the central balance plate is suspended in the water flow to form a central balance for the measuring frame. The water flow passes through the central water permeable hole to buffer the longitudinal impact of the water flow on the central balance plate.

[0013] Optionally, the lower end of the oscillating plate is connected to a plurality of flexible follower strips, and the middle parts of the plurality of follower strips are connected as one piece by an elastic strip; when the measuring frame is placed in water flow, the plurality of follower strips are suspended below the measuring frame, forming a bottom balance for the measuring frame; The oscillating plate is provided with multiple adjustment holes, which penetrate the oscillating plate. Both ends of the adjustment holes are respectively covered with elastic membrane layers, which are bulging.

[0014] Compared with existing technologies, the water flow parameter measurement method provided by this invention lowers the measuring frame into the water flow using ropes and allows it to remain stationary for a set time. Water flow parameters are acquired using a flow velocity sensor, depth sensor, flow direction sensor, and data acquisition device. During the stationary period, the lower plate and the swing plate automatically adjust themselves to buffer the impact of the water flow on the measuring frame, which is beneficial for the dynamic stability of the measuring frame in the water flow and helps to ensure the accuracy of the water flow parameters. Secondly, the lower plate and the swing plate are plate-shaped and arranged in the same direction in their width direction. During the impact of the water flow on the swing plate, the measuring frame rotates and adjusts to align its width direction with the water flow direction, reducing the impact of the water flow on the measuring frame. The water flow passes through the lower interval and the swing interval. Thus, the operation is simple and the measurement structure is accurate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the measuring frame provided by the present invention; Figure 2 This is a partial schematic diagram of the oscillating plate provided by the present invention; Figure 3 This is a schematic diagram of the connector structure provided by the present invention; Figure 4 This is a schematic diagram of the transverse portion provided by the present invention; Figure 5 This is a partial schematic diagram of the bottom of the swing plate provided by the present invention; Figure 6 This is a partial schematic diagram of the oscillating plate provided by the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0017] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0018] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0019] Reference Figure 1-6 The image shown is a preferred embodiment of the present invention.

[0020] The water flow parameter measurement method provided by the present invention provides a measuring frame, the upper part of which has an upper rod 100 arranged in a longitudinal strip shape. The upper rod 100 is equipped with a flow velocity sensor for measuring water flow velocity, a depth sensor for measuring water flow depth, and a flow direction sensor for measuring water flow direction. A data acquisition device is provided in the upper rod 100. The top of the upper rod 100 has a connector 110 for connecting to a rope. The bottom of the upper rod 100 has two longitudinally plate-shaped lower plates 200 that swing towards or away from each other. The two lower plates 200 are arranged in the same direction with a lower gap between them. The lower plates 200 extend in the same direction as the upper rod 100. The upper end of the lower plate 200 is hinged to the bottom of the upper rod 100. The lower end of the lower plate 200 extends downward. The lower gap is connected to an elastic structure 210 that limits the swing range of the two lower plates 200. Two lower plates 200 are respectively connected to the outer sides of an inclined plate 300 that swings relative to or away from the lower plate 200. The upper end of the swing plate 300 is hinged to the outer side of the lower plate 200 to form a hinge position. The hinge position is provided with a torsion spring 310 to limit the swing range of the swing plate 300 relative to the lower plate 200. A swing interval is formed between the swing plate 300 and the lower plate 200. The width direction of the swing plate 300 is arranged in the same direction as the width direction of the lower plate 200. The data acquisition unit is electrically connected to an external controller via a cable, using a rope connected to connector 110. The measuring frame is lowered into the water flow. After the measuring frame has been stationary in the water flow for a set time, the flow velocity sensor measures the flow velocity data, the depth sensor measures the flow depth data, and the flow direction sensor measures the flow direction data. The data acquisition unit collects the flow velocity data, depth data, and flow direction data to form water flow parameters, which are then transmitted to the controller via a cable.

[0021] The aforementioned method for measuring water flow parameters involves lowering the measuring frame into the water flow using ropes and allowing it to remain stationary for a set time. Flow velocity sensors, depth sensors, flow direction sensors, and a data acquisition unit then acquire the water flow parameters. During this stationary period, the lower plate 200 and the swing plate 300 automatically adjust themselves to cushion the impact of the water flow on the measuring frame, thus improving its dynamic stability and ensuring accurate measurement of the water flow parameters. Furthermore, the lower plate 200 and the swing plate 300 are plate-shaped and arranged in the same direction in their width. As the water flow impacts the swing plate 300, the measuring frame rotates to align its width with the water flow direction, reducing the impact. The water flows through the lower and swing plates. This method is simple to operate and provides accurate measurement results.

[0022] In this invention, the flow direction sensor can be a GY-26 electronic compass, which simultaneously senses the magnetic components of the Earth's magnetic field through two mutually perpendicular axes in a magnetic sensor to determine the azimuth angle. The depth sensor can be an MS5837-30BA sensor that measures pressure data and converts it into water depth data.

[0023] The flow velocity sensor includes a rotating ring 120 sleeved on the outer circumference of the upper rod 100 and rotatably arranged. Multiple blades 121 are arranged circumferentially around the outer circumference of the rotating ring 120. When the measuring frame is placed in the water flow, the water flow impacts the blades 121, causing the rotating ring 120 to rotate synchronously. The data acquisition unit collects the rotation data of the rotating ring 120 and converts it into water flow velocity data. Thus, the data acquisition unit measures the water flow velocity by monitoring the rotation speed of the rotating ring 120. It detects the rotation angle or speed of the rotating ring 120 and converts it into an electrical signal. Then, the data acquisition unit processes and converts these electrical signals to finally obtain the water flow velocity data.

[0024] The connector 110 is rotatably connected to the top of the upper rod 100. When the measuring frame is placed in the water channel, it is suspended in the water flow. When the measuring frame is impacted by the water flow, the upper rod 100 rotates relative to the connector 110. This ensures that the measuring frame can automatically adjust while stationary in the water.

[0025] In this embodiment, horizontally extending plate-shaped top balance plates 111 extend outward from both sides of the connector 110. The top balance plates 111 are arranged perpendicularly to the upper rod 100, and multiple flexible buffer strips 112 extend downward from the bottom of the top balance plates 111. When the measuring frame is placed in the water flow, the top balance plates 111 are horizontally suspended, forming a top balance for the measuring frame, and the multiple buffer strips 112 float with the impact of the water flow. This keeps the measuring frame in a horizontal floating state, making it more stable and ensuring accurate depth data. Furthermore, the buffer strips 112 buffer the direct impact of the water flow on the measuring frame. When the water flow comes into contact with the buffer strips 112, its kinetic energy is partially absorbed and dispersed, thereby reducing the impact force on the main structure of the measuring frame.

[0026] The top balance plate 111 has a hollow interior, forming a flat hollow area that is laid out horizontally along the top balance plate 111. Multiple vertically extending top water-permeable holes 1110 are arranged within the top balance plate 111, isolated from the hollow area. When the measuring frame is placed in water flow, the water flows through the top water-permeable holes 1110, buffering the longitudinal impact of the water flow on the top balance plate 111. Thus, the hollow area enhances the buoyancy of the top balance plate 111, and the design of the top water-permeable holes 1110 ensures that floating water can pass vertically through the top balance plate 111, reducing the amount of water directly acting on the top balance plate 111.

[0027] The bottom of the upper rod 100 is equipped with a horizontally arranged and rotatably oriented counterweight plate 130. When the measuring frame is placed in the water flow, the counterweight plate 130 applies downward pressure to the measuring frame. When the impact force of the water flow on the counterweight plate 130 exceeds a set value, the counterweight plate 130 rotates horizontally. In this way, the design of the counterweight plate 130 increases the counterweight and avoids the rope tilting due to insufficient counterweight, which would lead to deviations in water depth measurement.

[0028] The bottom of the upper rod 100 has a transverse part 140 arranged in a transverse direction. The transverse part 140 has a transverse cavity that penetrates the outer periphery of the transverse part 140 to form an outer periphery opening 141. A longitudinal shaft is arranged in the middle of the transverse cavity. The counterweight plate 130 is movably placed in the transverse cavity. The longitudinal shaft penetrates the middle of the counterweight plate 130 and is rotatably connected to the counterweight plate 130. When the measuring frame is placed in the water flow, the water flows into the transverse cavity through the outer peripheral opening 141 and is discharged from the transverse cavity through the outer peripheral opening 141. The counterweight disk 130 is disc-shaped, with a flow-through gap between its outer periphery and the inner wall of the transverse cavity. The outer periphery of the counterweight disk 130 is serrated, with a serrated ring arranged around its circumference. When the measuring frame is placed in the water flow, the water flows through the flow-through gap via the outer peripheral opening 141. This serrated ring design increases the contact between the water flow and the counterweight disk 130, making it easier for the counterweight disk 130 to rotate and absorb kinetic energy.

[0029] In this embodiment, the two sides of the horizontal portion 140 extend outward to form two horizontally arranged middle balance plates 150. The two middle balance plates 150 extend in the same direction as the two top balance plates 111. The middle balance plate 150 is provided with a vertically through middle water permeable hole 1110. The middle water permeable hole 1110 is strip-shaped and extends along the length of the middle balance plate 150. When the measuring frame is placed in the water flow, the central balance plate 150 is suspended in the water flow, forming a central balance for the measuring frame. The water flows through the central water permeable hole 1110, buffering the longitudinal impact of the water flow on the central balance plate 150. This improves the horizontal stability of the device in the water and ensures accurate data measurement.

[0030] The lower end of the oscillating plate 300 is connected to multiple flexible follower bars 320, and the middle parts of the multiple follower bars 320 are connected as one unit by elastic bars 321. When the measuring frame is placed in water flow, the multiple follower bars 320 are suspended below the measuring frame, forming a bottom balance for the measuring frame. In this way, the horizontal stability of the device in the water is improved, ensuring accurate data measurement.

[0031] In this embodiment, the oscillating plate 300 is provided with multiple adjustment holes 400, which penetrate the oscillating plate 300. Both ends of the adjustment holes 400 are covered with elastic membrane layers 401, which are arranged in a bulging shape. Two elastic membrane layers 401 respectively seal both ends of the adjustment holes 400, so that the adjustment holes 400 are in a sealed state. Because the elastic membrane layers 401 are bulging, under the pressure of the water flow, the elastic membrane layers 401 elastically change, synchronously driving the oscillating plate 300 to adjust accordingly, allowing the oscillating plate 300 to flow with the water and achieve automatic adjustment and balance.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method of measuring a parameter of a water flow, characterised in that, The utility model provides a measuring frame, the upper portion of the measuring frame has the upper rod of longitudinal strip arrangement, be equipped with the flow velocity sensor of measuring water flow velocity, the depth sensor of measuring water flow depth and the flow direction sensor of measuring water flow direction on the upper rod, be equipped with data collector in the upper rod; The top of the upper rod has a connecting head connected to a rope, the bottom of the upper rod extends downwardly with two lower pieces in a longitudinal sheet shape and swing towards or away from each other, the two lower pieces are arranged in the same direction with a spacing therebetween, and the lower pieces extend in the same direction with the upper rod; the upper end of the lower piece is hingedly connected to the bottom of the upper rod, and the lower end of the lower piece extends downwardly; the lower spacing is arranged to be connected to an elastic structure for limiting the swing range of the two lower pieces; The outer side of the two lower pieces is respectively connected to a swing piece in an inclined sheet shape and swings towards or away from the lower piece, the upper end of the swing piece is hingedly connected to the outer side of the lower piece to form a hinged position, the hinged position is provided with a torsion spring for limiting the swing range of the swing piece relative to the lower piece, a swing spacing is formed between the swing piece and the lower piece, and the width direction of the swing piece is arranged in the same direction with the width direction of the lower piece; The data collector is electrically connected to an external controller through a cable; the measuring frame is lowered into the water flow, and after the measuring frame is stationary in the water flow for a set time, the flow velocity sensor measures the flow velocity data of the water flow, the depth sensor measures the depth data of the water flow, the flow direction sensor measures the flow direction data of the water flow, the data collector collects the flow velocity data, the depth data and the flow direction data to form the water flow parameters, and the water flow parameters are transmitted to the controller through the cable.

2. The method of claim 1, wherein the water flow parameter is determined by the steps of: determining a flow rate of the water flow; determining a temperature of the water flow; and determining a pressure of the water flow. The flow velocity sensor comprises a rotating ring arranged to rotate around the outer periphery of the upper rod, and a plurality of paddle blades are arranged on the outer periphery of the rotating ring; after the measuring frame is placed in the water flow, the flow of the water flow impacts the paddle blades to drive the rotating ring to rotate synchronously, and the data collector collects the rotation data of the rotating ring and synchronously converts the rotation data into the flow velocity data of the water flow.

3. The method of claim 1, wherein the water flow parameter is determined by measuring the pressure difference between the upstream and downstream pressure sensors. The connecting head is rotationally connected to the top of the upper rod, and when the measuring frame is placed in the water flow, the measuring frame is suspended in the water flow, and when the measuring frame is impacted by the water flow, the upper rod rotates relative to the connecting head.

4. The method of claim 1, wherein the water flow parameter is measured by, The two sides of the connecting head respectively extend outwardly with a top balancing piece in a transverse sheet shape, the top balancing piece is arranged perpendicularly to the upper rod, and the bottom of the top balancing piece extends downwardly with a plurality of flexible buffer strips; when the measuring frame is placed in the water flow, the top balancing piece is horizontally suspended to form a top balance for the measuring frame, and the buffer strips are floating with the impact of the water flow.

5. The method of claim 4, wherein the water flow parameter is determined by the steps of: determining a flow rate of the water flow; and determining a temperature of the water flow. The inside of the top balancing piece is hollow, forming a flat hollow area, which is arranged in a transverse flat manner along the top balancing piece; a plurality of top water-permeable holes are arranged in the top balancing piece in a vertical penetrating manner, which are arranged in isolation from the hollow area; when the measuring frame is placed in a water flow, the water flow flows through the top water-permeable holes, buffering the longitudinal impact of the water flow on the top balancing piece.

6. The method of claim 1, wherein The bottom of the upper rod is provided with a counterweight disc arranged in a transverse and rotating manner; when the measuring frame is placed in a water flow, the counterweight disc applies a downward pressure to the measuring frame, and when the impact force of the water flow on the counterweight disc exceeds a set value, the counterweight disc rotates horizontally.

7. The method of claim 6, wherein the water flow parameter is determined by the steps of: determining a flow rate of the water flow; and determining a temperature of the water flow. The bottom of the upper rod is formed with a transverse part arranged in a transverse manner, the transverse part is provided with a transverse cavity penetrating the outer periphery of the transverse part, forming an outer periphery opening; the middle part of the transverse cavity is provided with a longitudinal shaft arranged in a longitudinal manner, the counterweight disc is movably arranged in the transverse cavity, the longitudinal shaft penetrates the middle part of the counterweight disc and is rotationally connected with the counterweight disc; When the measuring frame is placed in a water flow, the water flow enters the transverse cavity through the outer periphery opening and is discharged from the transverse cavity through the outer periphery opening.

8. The method of claim 7, wherein the water flow parameter is determined by the steps of: determining a flow rate of the water flow; and determining a temperature of the water flow. The counterweight disc is in the shape of a disc, and has a through-flow interval between the outer periphery of the counterweight disc and the inner side wall of the transverse cavity; the outer periphery of the counterweight disc is in the shape of a sawtooth, has a sawtooth ring arranged in a circumferential manner around the counterweight disc; when the measuring frame is placed in a water flow, the water flow passes through the through-flow interval through the outer periphery opening.

9. The method of claim 7, wherein the water flow parameter is measured by measuring the pressure drop across the orifice. The two sides of the transverse part are respectively arranged to extend outward, forming two middle balancing pieces arranged in a transverse manner, and the two middle balancing pieces are respectively arranged to extend in the same direction as the two top balancing pieces; the middle balancing pieces are provided with middle water-permeable holes arranged in a vertical penetrating manner, which are in the shape of strips and arranged in a lengthwise direction of the middle balancing pieces; When the measuring frame is placed in a water flow, the middle balancing pieces are suspended in the water flow, forming a middle balance for the measuring frame, and the water flow flows through the middle water-permeable holes, buffering the longitudinal impact of the water flow on the middle balancing pieces.

10. The method of measuring a water flow parameter according to any one of claims 1 to 9, wherein The lower end of the swing piece is connected with a plurality of flexible follow-up strips, and the middle parts of the plurality of follow-up strips are connected as a whole by an elastic strip; when the measuring frame is placed in a water flow, the plurality of follow-up strips are suspended below the measuring frame, forming a bottom balance for the measuring frame. The swing piece is provided with a plurality of adjusting holes penetrating the swing piece, the two ends of the adjusting holes are respectively capped with elastic film layers, and the elastic film layers are in the shape of a bulge.

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