A metering and monitoring device for water usage in open channels of silted irrigation areas

Abstract

This utility model discloses a water measurement and monitoring device for open channels in siltation irrigation areas, belonging to the field of water conservancy equipment technology. It includes a measuring flume body, a siltation detection component, a water volume monitoring unit, and multiple vibration units. The measuring flume body, with a double-layer structure and open ends, is located on the inner wall of the channel, and the width direction of the flume body is consistent with the width direction of the channel. The siltation detection component is located at the top of the measuring flume body, facing towards the bottom of the flume body, and its siltation detection element can reciprocate along the width direction of the flume body. The water volume monitoring unit is arrayed on the inner wall of the measuring flume body for monitoring the channel water level. Multiple vibration units are fixed within the interlayer space of the measuring flume body, with some working end faces of each vibration unit abutting against the inner wall of the measuring flume body on the side closest to the channel. This not only reduces the error in water delivery volume due to the degree of siltation but also improves the accuracy of the measurement data.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy equipment technology, and more specifically, to a water consumption monitoring device for open channels in silted irrigation areas. Background Technology

[0002] In the field of open channel irrigation, especially in the Yellow River irrigation area, siltation (such as mud, sand, and floating debris) in the channels will lead to large-scale siltation. This siltation will make the channels shallower, reduce the flow of water, and in severe cases, cause rivers and channels to overflow, resulting in disasters. In addition, in irrigation applications, siltation will also cause the measured water delivery volume to gradually deviate from the actual water delivery volume as the degree of siltation increases, resulting in a situation where the measured water delivery volume deviates from the actual value.

[0003] Currently, traditional methods mainly rely on manual estimation or simple equipment estimation. Manual estimation inherently has a certain degree of bias, and the error gradually increases with the thickness of the sediment deposit. A representative example of equipment estimation is ultrasonic box-type flow measurement, which mainly involves measuring the spacing of multi-channel transducers and using software estimation. Due to the large spacing between the transducers, the measurement accuracy is greater than 10%, resulting in distorted measurement data.

[0004] Therefore, there is an urgent need for a water metering and monitoring device for open channels in silt-prone irrigation areas to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a water metering and monitoring device for open channels in silted irrigation areas, which aims to reduce the error between the water delivery volume and the actual water delivery volume as the degree of siltation increases, while improving the accuracy of the measurement data.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A water measurement and monitoring device for open channels in silted irrigation areas includes a water measuring tank body, a siltation detection component, a water volume monitoring unit, and multiple vibration units;

[0008] The double-layered measuring trough body with open ends is located on the inner wall of the channel, and the width direction of the measuring trough body is consistent with the width direction of the channel.

[0009] The sedimentation detection component is located at the top of the measuring tank body and faces the bottom of the measuring tank body. The sedimentation detection component can reciprocate along the width of the measuring tank body.

[0010] The water level monitoring unit array is located on the inner wall of the water level measuring tank body and is used to monitor the water level in the channel;

[0011] Multiple vibration units are fixed in the interlayer space of the measuring tank body, and part of the working end face of the multiple vibration units abuts against the inner wall of the measuring tank body on the side closest to the channel.

[0012] Furthermore, the siltation detection assembly includes a mounting bracket, a mounting cylinder, a siltation detection element, an adjusting screw, and an adjusting nut;

[0013] The mounting bracket is fixed to the top of the measuring tank body. The mounting bracket and the measuring tank body are in sliding fit. The top of the mounting bracket is provided with a sliding hole. The length direction of the sliding hole is consistent with the width direction of the measuring tank body.

[0014] The mounting cylinder is vertically embedded inside the sliding hole and forms a sliding fit with the sliding hole; the sedimentation detection element is located at one end of the mounting cylinder near the bottom of the measuring tank body, and the working direction of the sedimentation detection element is towards the bottom of the measuring tank body.

[0015] The adjusting screw is screwed to the top of the mounting bracket, and the end of the adjusting screw passes through the mounting cylinder and is fixedly connected.

[0016] The adjusting nut is located around the periphery of the mounting bracket and can drive the adjusting screw to move the mounting cylinder back and forth along the length of the sliding hole.

[0017] Furthermore, the water volume monitoring unit includes multiple flow velocity monitoring devices and at least two water level monitoring devices;

[0018] Multiple flow rate monitoring devices are arrayed on the wall of the measuring tank body to monitor the water flow rate inside the measuring tank body;

[0019] At least two water level monitoring devices are symmetrically arranged on the wall of the measuring tank body and located between the corresponding flow velocity monitoring devices.

[0020] Furthermore, the measuring tank also includes an expansion mask and multiple flow equalization plates;

[0021] The truncated cone structure of the expanding mask is located at one end of the measuring tank body, and the end of the expanding mask away from the measuring tank body faces the upstream section of the channel;

[0022] Multiple flow equalizing plates are fixed at equal intervals at the end of the expansion mask away from the main body of the measuring tank, and the length direction of the multiple flow equalizing plates is horizontally set with the length direction of the measuring tank body.

[0023] Furthermore, multiple vibration units are progressively arranged from the bottom of the measuring tank body to the top of the measuring tank body, with the vibration unit at the higher position located on the side of the measuring tank body closer to the expanding mask.

[0024] Furthermore, a groove is provided on the top of the measuring tank body. The length direction of the groove is perpendicular to the width direction of the measuring tank body, and the longitudinal section of the groove is generally trapezoidal. The inner wall of the groove slides in contact with the bottom circumference of the mounting frame.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] This application features a double-layered, open-end measuring tank body installed on the inner wall of a channel, with the tank width aligned with the channel width. This regulates the flow pattern as water enters the measuring tank from the channel, creating a stable flow cross-section. The double-layered space provides installation space for the vibration unit and actively reduces interference from external environmental factors (such as temperature and impact) on the internal monitoring devices. A sedimentation detection component is installed at the top of the measuring tank. Its sedimentation detector can reciprocate along the tank width. During operation, the detector periodically scans the bottom along the tank width, measuring the distance from the top to the bottom. By comparing the scanned data with the initial reference distance when there is no sedimentation, the sedimentation thickness distribution along the tank width can be obtained. Because the detector is movable, the representativeness error of single-point measurements is avoided, enabling the identification of non-uniform sedimentation (such as severe sedimentation on one side). The water volume monitoring units are arranged in an array on the inner wall of the measuring tank body. Using the known cross-sectional geometry of the tank, a more accurate real-time flow area is calculated through integration or the cross-sectional velocity-area method. Combined with the sediment thickness data provided by the sediment detection component, the cross-sectional area changes caused by sedimentation can be dynamically corrected, thereby significantly improving the accuracy of flow measurement. The vibration unit is fixed in the sandwich space of the double-layer structure. The operator can control the vibration unit to generate high-frequency micro-amplitude vibrations periodically or as needed through an external calculator. The vibration energy is transmitted to the inner wall surface, causing the mud and sand particles, floating objects or silt attached to the wall surface to be shaken off or unable to settle stably, thus playing a role in preventing sedimentation and self-cleaning. On the other hand, the vibration of the vibration unit can also prevent measurement failure caused by air bubbles or suspended matter adhering to the surface of the water volume monitoring unit sensor. Attached Figure Description

[0027] The accompanying drawings, as part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure in the assembled state provided in this embodiment of the application;

[0029] Figure 2 This is a schematic diagram of the structure in the isometric view provided in this embodiment of the application;

[0030] Figure 3 This is a side view schematic diagram of the structure provided in this embodiment of the application.

[0031] Reference numerals: 10-Water measuring tank body; 101-Slide groove; 11-Expanding mask; 12-Flow equalization plate; 20-Siltation detection component; 21-Siltation detection element; 22-Mounting bracket; 221-Slide hole; 23-Mounting cylinder; 24-Adjusting screw; 25-Adjusting nut; 30-Water volume monitoring unit; 31-Flow velocity monitoring element; 32-Water level monitoring element; 40-Vibration unit. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0033] See Figures 1 to 3 As shown, a water measurement and monitoring device for open channels in siltation irrigation areas includes a water measuring trough body 10, a siltation detection component 20, a water volume monitoring unit 30, and multiple vibration units 40. The water measuring trough body 10, with a double-layer structure and open at both ends, is located on the inner wall of the channel, and the width direction of the water measuring trough body 10 is consistent with the width direction of the channel. The siltation detection component 20 is located at the top of the water measuring trough body 10, facing towards the bottom of the water measuring trough body 10, and the siltation detection element 21 of the siltation detection component 20 can reciprocate along the width direction of the water measuring trough body 10. The water volume monitoring unit 30 is arrayed on the inner wall of the water measuring trough body 10 for monitoring the channel water level. Multiple vibration units 40 are fixed in the interlayer space of the water measuring trough body 10, and part of the working end face of the multiple vibration units 40 abuts against the inner wall of the water measuring trough body 10 on the side closest to the channel.

[0034] In the above scheme, the double-layered, open-end measuring tank body 10 is installed on the inner wall of the channel with its width direction consistent with the channel width. This ensures that the flow pattern is regulated when water enters the measuring tank from the channel, forming a stable flow cross-section. The double-layered space provides an installation position for the vibration unit 40 and actively reduces interference from the external environment (such as temperature and impact) on the internal monitoring devices. The sedimentation detection component 20 is installed on the top of the measuring tank, and its sedimentation detection element 21 can move back and forth along the width direction of the tank. During operation, the sedimentation detection element 21 periodically scans the bottom along the width of the tank, measuring the distance from the top to the bottom. By comparing the scan data with the reference distance when there is no sedimentation, the sedimentation thickness distribution along the width direction of the tank can be obtained. Because the sedimentation detection element 21 is movable, the representativeness error of single-point measurement is avoided, and non-uniform sedimentation (such as severe sedimentation on one side) can be identified. The water volume monitoring units 30 are arranged in an array on the inner wall of the measuring tank body 10. Based on the known cross-sectional geometry of the tank, the real-time flow area is calculated more accurately using integration or the cross-sectional velocity-area method. Combined with the sedimentation thickness data provided by the sedimentation detection component 20, the cross-sectional area changes caused by sedimentation can be dynamically corrected, thereby significantly improving the accuracy of flow measurement. The vibration unit 40 is fixed in the sandwich space of the double-layer structure. Operators can control the vibration unit 40 to periodically or as needed generate high-frequency micro-amplitude vibrations via an external calculator, transmitting vibration energy to the inner wall surface. This causes the mud and sand particles, floating objects, or silt adhering to the wall surface to be shaken off or prevents stable deposition, thus playing a role in preventing sedimentation and self-cleaning. Furthermore, the vibration of the vibration unit 40 can also prevent measurement failure caused by air bubbles or suspended matter adhering to the sensor surface of the water volume monitoring unit 30.

[0035] The sedimentation detection assembly 20 includes a mounting frame 22, a mounting cylinder 23, a sedimentation detection element 21, an adjusting screw 24, and an adjusting nut 25. The mounting frame 22 is fixed to the top of the measuring tank body 10, and the mounting frame 22 and the measuring tank body 10 are in sliding fit. A sliding hole 221 is provided on the top of the mounting frame 22, and the length direction of the sliding hole 221 is consistent with the width direction of the measuring tank body 10. The mounting cylinder 23 is vertically embedded in the sliding hole 221 and is in sliding fit with the sliding hole 221. The sedimentation detection element 21 is located at one end of the mounting cylinder 23 near the bottom of the measuring tank body 10, and the working direction of the sedimentation detection element 21 is towards the bottom of the measuring tank body 10. The adjusting screw 24 is screwed to the top of the mounting frame 22, and the end of the adjusting screw 24 passes through the mounting cylinder 23 and is fixedly connected. The adjusting nut 25 is located around the periphery of the mounting frame 22 and can drive the adjusting screw 24 to move the mounting cylinder 23 back and forth along the length direction of the sliding hole 221.

[0036] In the above scheme, when the adjusting nut 25 is rotated manually or by motor, the adjusting screw 24 moves axially relative to the mounting bracket 22. Since the end of the screw is fixed to the mounting cylinder 23, it drives the mounting cylinder 23 and the siltation detection element 21 fixed at the lower end of the mounting cylinder 23 to move back and forth along the sliding hole 221 (i.e., the groove width direction). During the movement, the siltation detection element 21 continuously measures the distance from its probe to the bottom (or the surface of the silt). By subtracting the current distance from the initial reference distance when there is no siltation (the calibration value after emptying or dredging), the siltation thickness at that location can be obtained. By controlling the number of rotations and direction of the adjusting nut 25, the sedimentation detector 21 can traverse the entire width of the channel (e.g., from the left wall to the right wall) at a certain step size to obtain a sedimentation thickness distribution curve. A complete scan can be performed periodically (e.g., once a day) or as needed (e.g., when the water level is abnormal) to update the cross-sectional data and accurately identify non-uniform sedimentation (e.g., deep scouring in the middle, high sedimentation on both sides, or severe sedimentation on the outer side of the bend), avoiding systematic deviations in flow calculation caused by misjudgment of cross-sectional shape.

[0037] The water volume monitoring unit 30 includes multiple flow velocity monitoring elements 31 and at least two water level monitoring elements 32; the multiple flow velocity monitoring elements 31 are arrayed on the tank wall of the water tank body 10 for monitoring the water flow velocity in the water tank body 10; the at least two water level monitoring elements 32 are symmetrically arranged on the tank wall of the water tank body 10 and located between the corresponding flow velocity monitoring elements 31.

[0038] In the above scheme, multiple velocity monitoring devices 31 can be deployed at multiple measuring points at different heights along the water depth direction to obtain the vertical velocity distribution. Alternatively, multiple velocity monitoring devices 31 can be deployed along multiple vertical lines along the channel width direction. Each velocity monitoring device 31 measures the water velocity at its location in real time. Based on the vertical velocity distribution pattern, the average velocity of the entire cross-section can be deduced from the velocity at a limited number of measuring points. In the water depth direction, the water level monitoring device 32 is installed at a height between the upper and lower layers of velocity monitoring devices 31, or near the horizontal line connecting the water level monitoring devices 32, with the velocity monitoring devices 31 distributed above and below them. The symmetrical arrangement of the water level monitoring devices 32 can eliminate unilateral water level deviations caused by lateral channel inclination or waves.

[0039] The measuring tank body 10 also includes a flared mask 11 and multiple flow equalization plates 12; the flared mask 11 with a horn-shaped structure is located at one end of the measuring tank body 10, and the end of the flared mask 11 away from the measuring tank body 10 faces the upstream section of the channel; multiple flow equalization plates 12 are fixed at equal intervals at the end of the flared mask 11 away from the measuring tank body 10, and the length direction of the multiple flow equalization plates 12 is horizontally arranged with the length direction of the measuring tank body 10.

[0040] In the above scheme, the upstream channel has a wide inlet cross-section. After entering the expansion mask 11, the flow cross-section gradually narrows, the flow velocity increases uniformly, the lateral flow is suppressed, and the water flow is smoothly guided into the measuring tank body 10, avoiding the generation of vortices or backflow at the inlet. Before entering the expansion mask 11, the water flow first passes through the flow equalization plate array 12. Multiple narrow flow channels are formed between the plates, which not only cut the large-scale lateral circulation and secondary flow into small-scale vortices and rapidly attenuate them through plate wall friction, but also make the flow velocity tend to be uniform in the horizontal direction (perpendicular to the plate surface), so that the multiple velocity measurement points acquired by the subsequent water volume monitoring unit 30 can truly reflect the velocity distribution of the entire cross-section.

[0041] Multiple vibration units 40 are progressively arranged from the bottom of the measuring tank body 10 to the top of the measuring tank body 10, and the vibration unit 40 at the higher position is located on the side of the measuring tank body 10 close to the expanding mask 11.

[0042] In the above scheme, multiple vibration units 40 are arranged sequentially upwards (towards the water surface) from near the bottom of the tank, forming a vertically distributed, equally spaced arrangement. The vibration units 40 at the bottom are mainly for the bottom area where sedimentation is rapid and siltation is most severe. High-frequency vibration can prevent silt from hardening and resuspend the loose sediment that has settled. The vibration units 40 in the middle are for the silt layer and algae that may adhere to the middle of the side wall of the measuring tank body 10, preventing lateral contraction of the flow cross section. The vibration units 40 at the higher position are close to the water surface and are mainly for the adhesion of floating objects (such as foam, withered grass, and plastic fragments) near the wall, as well as biofilms commonly found in areas with fluctuating water levels.

[0043] When the sediment detection component 20 scans the sediment thickness at the bottom, if loose "virtual sediment" exists at the bottom, it may be misjudged as fixed sediment. The vibration unit 40 (especially the bottom unit) is activated periodically to compact the virtual sediment or suspend it and allow it to be carried away by the water flow, ensuring that the sediment detection component 20 always measures a relatively dense sediment layer thickness, avoiding fluctuations in measurement data caused by unstable sediment conditions. Simultaneously, after the high-level vibration removes wall deposits, the water level measuring hole and flow velocity probe surfaces of the water volume monitoring unit 30 remain clean, ensuring that the measurement data accurately reflects the water flow state, rather than being spurious values ​​due to contamination.

[0044] It should be noted that the siltation detection element 21 in this application is any one of the prior art non-contact radar water level gauges or infrared sludge concentration detectors; the water level monitoring element 32 is any one of the prior art ultrasonic or sonar sensors; the flow velocity monitoring element 31 is any one of ultrasonic Doppler flowmeters, radar flowmeters, or electromagnetic flowmeters; and the vibration unit 40 is a micro-vibration motor. Those skilled in the art can directly use existing electronic components in this application. Therefore, this application does not limit its application in this regard.

[0045] The top of the measuring tank body 10 is provided with a sliding groove 101. The length direction of the sliding groove 101 is perpendicular to the width direction of the measuring tank body 10, and the longitudinal section profile of the sliding groove 101 is generally trapezoidal. The inner wall of the sliding groove 101 is in sliding contact with the bottom circumference of the mounting bracket 22.

[0046] In the above scheme, after the mounting frame 22 is embedded in the chute 101, it can only slide back and forth along the water flow direction (chute length direction). It is locked in the vertical and horizontal directions by the trapezoidal structure, preventing it from detaching upwards or swaying laterally. This allows the sedimentation detection component 20 to move as a whole along the water flow direction without affecting the scanning movement of its internal mounting cylinder 23 along the chute width direction. Workers can manually adjust or use a telescopic cylinder to push the mounting frame 22 along the chute 101 to move the sedimentation detection component 20 to the section requiring key monitoring (such as the most severely sedimented section, the outlet of the expansion mask 11, or the middle and rear of the chute). The sedimentation thickness curves of each section are combined to generate a contour map or three-dimensional surface model of the bottom of the chute. This identifies the spatial morphology of the sediment (such as sedimentation dams, scour pits, and segregation zones), providing a scientific basis for dredging decisions and improving the accuracy of measurement data.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water metering and monitoring device for open channels in silted irrigation areas, characterized in that, It includes a water tank body (10), a sedimentation detection component (20), a water volume monitoring unit (30), and multiple vibration units (40). The measuring tank body (10) with a double-layer structure and open at both ends is provided on the inner wall of the channel, and the width direction of the measuring tank body (10) is consistent with the width direction of the channel. The siltation detection component (20) is located at the top of the measuring tank body (10), and the siltation detection component (20) faces the bottom of the measuring tank body (10). The siltation detection element (21) of the siltation detection component (20) can reciprocate along the width direction of the measuring tank body (10). The water volume monitoring unit (30) is arrayed on the inner wall of the water trough body (10) and is used to monitor the channel water level; Multiple vibration units (40) are fixed in the interlayer space of the measuring tank body (10), and part of the working end face of the multiple vibration units (40) abuts against the inner wall of the measuring tank body (10) on the side near the channel.

2. The water usage monitoring device for open channels in silted irrigation areas according to claim 1, characterized in that, The siltation detection assembly (20) includes a mounting bracket (22), a mounting cylinder (23), an adjusting screw (24), and an adjusting nut (25); The mounting bracket (22) is fixed to the top of the measuring tank body (10). The mounting bracket (22) and the measuring tank body (10) are in sliding fit. The top of the mounting bracket (22) is provided with a sliding hole (221). The length direction of the sliding hole (221) is consistent with the width direction of the measuring tank body (10). The mounting cylinder (23) is vertically embedded inside the sliding hole (221) and forms a sliding fit with the sliding hole (221); the siltation detection element (21) is located at one end of the mounting cylinder (23) near the bottom of the measuring tank body (10), and the working direction of the siltation detection element (21) is towards the bottom of the measuring tank body (10). The adjusting screw (24) is screwed to the top of the mounting bracket (22), and the end of the adjusting screw (24) passes through the mounting cylinder (23) and is fixedly connected; The adjusting nut (25) is located on the periphery of the mounting bracket (22) and can drive the adjusting screw (24) to move the mounting cylinder (23) back and forth along the length of the sliding hole (221).

3. The water usage monitoring device for open channels in silted irrigation areas according to claim 1, characterized in that, The water volume monitoring unit (30) includes multiple flow velocity monitoring devices (31) and at least two water level monitoring devices (32). Multiple flow rate monitoring devices (31) are arrayed on the wall of the measuring tank body (10) to monitor the flow rate of water in the measuring tank body (10); At least two of the water level monitoring elements (32) are symmetrically arranged on the wall of the measuring tank body (10) and located between the corresponding flow velocity monitoring elements (31).

4. The water usage monitoring device for open channels in silted irrigation areas according to claim 1, characterized in that, The measuring tank body (10) also includes a diffuser (11) and multiple flow equalization plates (12). The expanding mask (11) of the truncated cone structure is located at one end of the measuring tank body (10), and the end of the expanding mask (11) away from the measuring tank body (10) faces the upstream section of the channel; Multiple flow equalizing plates (12) are fixed at equal intervals at one end of the expanding mask (11) away from the measuring tank body (10), and the length direction of the multiple flow equalizing plates (12) is horizontally arranged with the length direction of the measuring tank body (10).

5. The water usage monitoring device for open channels in silted irrigation areas according to claim 4, characterized in that, Multiple vibration units (40) are arranged progressively from the bottom of the measuring tank body (10) to the top of the measuring tank body (10), and the vibration unit (40) at the high position is located on the side of the measuring tank body (10) close to the expanding mask (11).

6. The water usage monitoring device for open channels in silted irrigation areas according to claim 2, characterized in that, The top of the measuring tank body (10) is provided with a sliding groove (101). The length direction of the sliding groove (101) is perpendicular to the width direction of the measuring tank body (10), and the longitudinal section profile of the sliding groove (101) is generally trapezoidal. The inner wall of the sliding groove (101) slides in contact with the bottom circumference of the mounting bracket (22).

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