Portable ultrasonic cross-correlation flowmeter transducer for monitoring three-dimensional flow field

Abstract

The utility model relates to a portable ultrasonic cross-correlation flowmeter transducer for monitoring a three-dimensional flow field. The transducer comprises a bracket assembly, the support assembly comprises a front supporting leg and a rear supporting leg which are connected front and back. A connecting support A is arranged at the root of the front supporting leg; a connecting support B is arranged at the root of the rear supporting leg; a plurality of side sensors A are arranged on the side wall surface A of the front supporting leg and / or a plurality of side sensors B are arranged on the side wall surface B of the front supporting leg. The device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to a portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring, which is particularly suitable for narrow-width open channels. Background Technology

[0002] The commonly used cross-correlation flowmeter is a flow measurement technology based on signal correlation analysis, widely used in industry, environmental protection, energy and other fields. Its core principle is to detect natural or artificially introduced disturbances in the fluid (such as bubbles, particles, turbulence, etc.), and use cross-correlation algorithms to calculate the time delay (passage time) of the signal, thereby determining the flow velocity and flow rate. Ultrasonic cross-correlation technology utilizes the flow velocity information carried by ultrasonic waves propagating in the fluid, and calculates the time difference by comparing the similarity of upstream and downstream echo signals, thus calculating the flow velocity and flow rate. Cross-correlation flowmeters, with their high accuracy, anti-interference capabilities, and wide applicability, have become an important technology in the field of flow measurement. With algorithm optimization, sensor innovation, and intelligent development, its market applications will further expand.

[0003] Existing ultrasonic cross-correlation flowmeters are mainly used for liquid flow monitoring in channels, pipelines, or culverts. Their core technology uses ultrasonic sensors to scan the reflection information from particles or bubbles in the water, directly acquiring the actual flow velocity value without calibration. A multi-redundant liquid level measurement scheme ensures data accuracy, enabling high-precision monitoring under complex hydraulic conditions. The technology relies on the design of the cross-correlation instrument and sensor. Advances in microelectronics technology have driven the industrialization of this instrument, with applications covering industrial and environmental measurement fields, including complex scenarios such as highly polluted liquids and gas flow. Currently used cross-correlation flowmeters in the industry employ a single-probe sensor (transducer) design, effectively scanning fluid data within a 2m diameter. This small sampling area results in poor representativeness of the measured flow velocity, leading to inaccurate measurements.

[0004] The market primarily uses bottom-mounted, side-mounted, float-mounted, and portable installation methods. Bottom-mounted installations in channels are affected by silt and impurities in the water, causing the transducer's transmitting surface to be blocked by sediment, resulting in no signal transmission, no flow measurement data, and unstable operation. Side-mounted installations in channels are affected by varying slopes (trapezoidal, rectangular, etc.) and require professional technicians to adjust the transducer's transmitting surface angle for proper operation, making installation costly and inconvenient. Float-mounted installations have high investment costs and require a buoy device. Portable installations, while convenient, are limited to short-term measurements and cannot operate automatically for extended periods. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring.

[0006] To address the challenges of on-site installation of ultrasonic cross-correlation flowmeters, including limitations imposed by various terrain conditions, complex installation processes requiring specialized technicians for surveying and commissioning, and the impact of long-term operation on signal transmission and flow instability due to siltation, debris, and turbulent bubbles at the canal bottom, as well as small sampling ranges, poor flow representativeness, and inaccurate measurements, a utility model of a portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring has been developed. This transducer allows for convenient installation of the ultrasonic cross-correlation flowmeter without the need for specialized technicians, is unaffected by terrain factors, and accurately and stably measures flow velocity and flow in various application scenarios such as small open channels, irrigation canals, farm canals and irrigation ditches, reservoir inlets and spillways, water resource intakes, and urban drainage networks. It provides a precise and stable data foundation for smart water conservancy information construction, offering technical support for managerial decision-making and ensuring personnel and project safety.

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0008] To facilitate installation and measurement, a portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring includes a support assembly;

[0009] The support assembly includes front and rear outriggers connected at the front and rear; it can be a fixed connection or a hinged connection, and it can be a head connection, a root connection, or a middle connection.

[0010] A connecting support A is provided at the root of the front outrigger;

[0011] A connecting support B is provided at the root of the rear outrigger;

[0012] Sensor A and / or sensor B employ ultrasonic cross-correlation flowmeter transducers;

[0013] Several side sensors A are provided on the side wall surface A of the front outrigger and / or several side sensors B are provided on the side wall surface B.

[0014] As a further improvement to the above technical solution:

[0015] To achieve automated monitoring and to monitor water level and siltation, a downward-facing sensor C is installed in the middle of the transverse connecting rod.

[0016] A sensor D facing upwards is installed on the transverse connecting rod;

[0017] To achieve accurate measurements, the support assembly is positioned along the direction of water flow, with the front support legs facing the direction of water flow; thus avoiding interference.

[0018] To ensure structural stability, the support assembly is installed at the bottom of the channel, forming a triangular structure with the bottom surface;

[0019] For ease of installation, the bracket assembly is an A-frame with a central gap at the bottom; connecting through holes are provided at the four feet of connecting support A and connecting support B for installing expansion bolts;

[0020] Connecting support A and connecting support B are installed at the bottom of the channel using pre-embedded expansion bolts.

[0021] A transverse link is connected between the front and rear outriggers to form an A-shape.

[0022] Connecting supports are provided on the inner walls of the front and rear outriggers for connecting the lateral connecting rods.

[0023] A frontal guide portion is provided on the outer top surface of the front outrigger;

[0024] To enable output transmission, a main unit is provided on the side of the channel for connecting the sensor.

[0025] The front side guide section is streamlined, V-shaped, or C-shaped, etc.

[0026] To facilitate slight angle adjustments, adjustment screw holes A and B are respectively provided on the connecting support A and connecting support B, located on both sides of the bracket assembly.

[0027] Adjusting screws are installed in adjusting screw holes A and B.

[0028] As a bracket assembly installation solution, one or a combination of the following solutions may be adopted;

[0029] Option a) The support assembly is installed at the bottom of the channel; its advantages are stable installation, convenient operation, minimal interference, and good stability.

[0030] Option b) The support assembly is inverted in the channel; the base of the support assembly is directly or indirectly installed on the channel through the support; its advantage is that it is easy to maintain.

[0031] Option c) The bracket assembly is installed directly on the side or indirectly on the channel slope via brackets, which facilitates construction.

[0032] To reduce the impact of crustal movement or river deformation, a process base plate is installed below connecting support A and connecting support B;

[0033] The process base plate is connected to the connecting support A;

[0034] The process base plate is connected to the connecting support B;

[0035] The process base plate is connected to the bottom of the channel;

[0036] Adjust the lower end of the set screw to abut against the upper surface of the process base plate.

[0037] The support assembly and the process base plate form a triangular frame.

[0038] To reduce the impact of the downstream flow change on the upstream flow, the width of the front support leg is greater than the set value, so that the water flow change does not affect the front support leg when it changes from the side to the inner sidewall.

[0039] To facilitate adjustment of the tilt angle, a rear ramp is provided on the bottom surface of the rear outriggers;

[0040] A rear-mounted cover is provided on the rear inclined plate;

[0041] A cross-bracing shaft and an eccentric fixed shaft are provided at the top of the front outrigger;

[0042] Several horizontal perforations and several eccentric perforations are provided on the rear cover;

[0043] The transverse coupling shaft and the eccentric fixed shaft are used to pass through the corresponding transverse through holes and eccentric through holes, respectively.

[0044] This utility model has the advantages of convenient installation and high measurement accuracy.

[0045] 1. By utilizing an arc-shaped three-dimensional structure for installation within open channels, the method simultaneously solves the problems of unstable flow measurement due to siltation in traditional bottom-mounted installations and the need to adjust the transducer's emitting surface angle according to terrain in side-mounted installations. This effectively addresses the impact of sediment deposition, lowers the installation threshold, improves product standardization, and reduces investment costs.

[0046] 2. The main structure of the ultrasonic cross-correlation flowmeter for three-dimensional flow field monitoring can be equipped with multiple transducers simultaneously according to different elevations. The transducer emission surface is fixed and optimized for the measurement angle, which expands the measurement range from 0~2m to 0~20m and can be expanded. Multiple probes can simultaneously measure and sample a large range, and the three-dimensional scanning of the flow field greatly improves the measurement accuracy and measurement range.

[0047] 3. The arc-shaped three-dimensional structure features a smooth, sloping, non-turbulent design on the water-facing surface, minimizing the impact of water flow scouring and ensuring smoothness to prevent debris adhesion. Its high hardness also enhances its resistance to silt abrasion. The central crossbeam employs a triangular stabilizing structure, improving the equipment's stability and lifespan. It can be simultaneously adapted to monitoring modules for water level and siltation depth, allowing for the coupling of various hydraulic element monitoring devices and enhancing the versatility and scalability of the equipment's monitoring capabilities.

[0048] This utility model is reasonably designed, low in cost, sturdy and durable, safe and reliable, simple to operate, time-saving and labor-saving, cost-saving, compact in structure and easy to use. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the channel usage structure of this utility model.

[0050] Figure 2A schematic diagram of the front support leg structure of this utility model.

[0051] Figure 3 A schematic diagram of the process base plate structure of this utility model.

[0052] Figure 4 A schematic diagram of the transverse connecting rod structure of this utility model.

[0053] Figure 5 A schematic diagram of a modified embodiment of the bracket assembly of this utility model.

[0054] The components are: 1. Channel; 2. Support assembly; 3. Intermediate gap; 4. Semi-convex lug; 5. Main unit; 6. Connecting support A; 7. Front support leg; 8. Rear support leg; 9. Transverse connecting rod; 10. Connecting support; 11. Connecting support B; 12. Side sensor A; 13. Side sensor B; 14. Side front guide; 15. Connecting through hole; 16. Adjusting screw hole A; 17. Adjusting screw hole B; 18. Process base plate; 19. Adjusting top screw; 20. Sensor C; 21. Sensor D; 22. Rear inclined plate; 23. Rear buckle cover; 24. Transverse connecting shaft; 25. Eccentric fixed shaft; 26. Transverse through hole; 27. Eccentric through hole. Detailed Implementation

[0055] like Figure 1-5 The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring in this embodiment includes a bracket assembly 2, which enables pre-installation and fixation.

[0056] The support assembly 2 includes a front support leg 7 and a rear support leg 8 connected front and rear to provide support and reduce the impact of water flow.

[0057] A connecting support A6 is provided at the base of the front outrigger 7;

[0058] A connecting support B11 is provided at the base of the 8 rear outriggers to facilitate installation and positioning.

[0059] The side wall surface A of the front outrigger 7 is provided with a number of side sensors A12 and / or the side wall surface B is provided with a number of side sensors B13, thereby enabling flow measurement.

[0060] A downward-facing sensor C20 is installed in the middle of the transverse link 9;

[0061] A sensor D21 facing upwards is installed on the transverse connecting rod 9 to measure water flow and siltation.

[0062] The support assembly 2 is set along the direction of water flow.

[0063] The support assembly 2 is used to be installed at the bottom of the channel 1, forming a triangular structure with the bottom surface, thereby achieving stability and sturdiness;

[0064] The support assembly 2 is an A-frame, which can also be understood as a figure-eight shape, with a middle gap 3 at the bottom to reduce weight and vibration; connecting through holes 15 are provided on the four legs of the connecting support A6 and connecting support B11 for installing expansion bolts;

[0065] Connecting support A6 and connecting support B11 are installed at the bottom of channel 1 using pre-embedded expansion bolts.

[0066] A transverse connecting rod 9 is connected between the front support leg 7 and the rear support leg 8 to form an A-shape, making the structure more stable.

[0067] Connecting supports 10 are provided on the inner walls of the front outrigger 7 and the rear outrigger 8 to connect the transverse connecting rod 9, making the connection convenient.

[0068] A side front guide portion 14 is provided on the outer top surface of the front outrigger 7;

[0069] A main unit 5 is provided on the side of channel 1 for connecting sensors to realize data transmission.

[0070] The front side guide section 14 is streamlined, V-shaped, or C-shaped to guide airflow; of course, a streamlined shape is preferred.

[0071] Adjusting screw holes A16 and B17 are respectively located on both sides of the bracket assembly 2 on the connecting support A6 and connecting support B11; thus, there are a total of four.

[0072] Adjusting screws 19 are installed in adjusting screw holes A16 and B17 to achieve lateral or other oblique adjustments.

[0073] A process base plate 18 is provided below the connecting support A6 and the connecting support B11;

[0074] The process base plate 18 is connected to the connecting support A6;

[0075] The process base plate 18 is connected to the connecting support B11;

[0076] Process base plate 18 is connected to the bottom of channel 1;

[0077] The lower end of the adjusting screw 19 abuts against the upper surface of the process base plate 18.

[0078] The bracket assembly 2 and the process base plate 18 form a tripod, thereby enabling pre-installation adjustment without the need for on-site adjustment.

[0079] To reduce the impact of the downstream flow on the upstream flow, the width of the front support leg 7 is greater than the set value, so that the change in water flow does not affect the front support leg 7 when it changes from the side to the inner wall.

[0080] A rear ramp 22 is provided on the bottom surface of the rear support leg 8;

[0081] A rear buckle cover 23 is provided on the rear inclined plate 22;

[0082] A cross-bracing shaft 24 and an eccentric fixing shaft 25 are provided at the top of the front outrigger 7, which facilitates installation and tilt angle adjustment.

[0083] Several transverse perforations 26 and several eccentric perforations 27 are provided on the rear cover 23;

[0084] The transverse coupling shaft 24 and the eccentric fixed shaft 25 are respectively used to pass through the corresponding transverse through hole 26 and eccentric through hole 27.

[0085] This invention measures flow using side sensor A12 and side sensor B13.

[0086] Water depth was tested using sensor D21.

[0087] The height of the silt was tested using sensor C20.

[0088] This utility model consists of a triangular metal frame main body and various flow transducers. The flow transducers are installed on the main support, and the transducer sensors D21 and C20 are installed on the middle crossbeam of the support.

[0089] This utility model adopts an integrated design, combining the transducer, water level gauge, and sediment level gauge into one unit. On-site installation:

[0090] Eight M10 expansion bolts (drilled on-site) are pre-embedded at the center of the bottom of the irrigation canal. The preferred hole spacing is 260*172 mm. Installation requirements are: the length of the mounting bracket should be aligned with the water flow direction, and the base plate should be level.

[0091] As a preferred option, the front end of the flow guide can be a triangular (e.g., V-shaped, semi-circular or other similar structure) three-dimensional structure. Alternative solutions can achieve the same purpose of the utility model, but their structure is not the best streamlined design, will produce corresponding turbulence effects and is not aesthetically pleasing.

[0092] This utility model is described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed one by one.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of this utility model can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. All technical contents not described in detail in this utility model are publicly known technologies.

Claims

1. A portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring, characterized in that: Includes support assembly (2); The support assembly (2) includes a front support leg (7) and a rear support leg (8) connected front and rear. The side wall surface A of the front outrigger (7) is provided with a number of side sensors A (12) and / or the side wall surface B is provided with a number of side sensors B (13).

2. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 1, characterized in that: A connecting support A (6) is provided at the root of the front outrigger (7); Sensor A (12) and / or sensor B (13) employ ultrasonic cross-correlation flowmeter transducers; A connecting support B (11) is provided at the root of the rear support leg (8); The front outrigger (7) faces the direction of the water flow; A downward-facing sensor C (20) is provided in the middle of the transverse link (9); A sensor D (21) facing upwards is provided on the transverse link (9); The support assembly (2) is an A-frame, and the lower part of the support assembly (2) has a middle gap (3).

3. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 2, characterized in that: As a mounting scheme for the bracket assembly (2), one or a combination of the following schemes may be used; Option a) The support assembly (2) is set at the bottom of the channel (1); Option b) The support assembly (2) is inverted in the channel (1); the root of the support assembly (2) is directly or indirectly mounted on the channel (1) through the support; Option c) The bracket assembly (2) is installed laterally directly or indirectly on the slope of the channel (1) via the bracket.

4. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to any one of claims 1-3, characterized in that: A transverse link (9) is connected between the front support leg (7) and the rear support leg (8) to form an A-shape; Connecting through holes (15) are provided at the four feet of connecting support A (6) and connecting support B (11) respectively for installing expansion bolts; Connecting support A (6) and connecting support B (11) are installed at the bottom of channel (1) by pre-embedded expansion bolts; Connecting supports (10) are provided on the inner wall of the front outrigger (7) and the inner wall of the rear outrigger (8) for connecting the transverse connecting rod (9).

5. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 4, characterized in that: A side front guide (14) is provided on the outer top surface of the front outrigger (7); A main unit (5) is provided on the side of the channel (1) for connecting the sensor.

6. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 1, characterized in that: The front side guide (14) is streamlined, V-shaped, or C-shaped.

7. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 3, characterized in that: Adjustment screw holes A (16) and B (17) are respectively located on both sides of the bracket assembly (2) on the connecting support A (6) and connecting support B (11). Adjusting screws (19) are installed in adjusting screw holes A (16) and B (17).

8. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 7, characterized in that: A process base plate (18) is provided below the connecting support A (6) and the connecting support B (11). The process base plate (18) is connected to the connecting support A (6); The process base plate (18) is connected to the connecting support B (11); The process base plate (18) is connected to the bottom of the channel (1); Adjust the lower end of the top screw (19) to abut against the upper surface of the process base plate (18).

9. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 4, characterized in that: The bracket assembly (2) and the process base plate (18) form a tripod.

10. The portable ultrasonic cross-correlation flowmeter transducer for three-dimensional flow field monitoring according to claim 4, characterized in that: The width of the front support leg (7) is greater than the set value, so that the water flow changes do not affect the front support leg (7) when it changes from the side to the inner wall; A rear ramp (22) is provided on the bottom surface of the rear support leg (8); A rear buckle cover (23) is provided on the rear inclined plate (22); A cross-bracing shaft (24) and an eccentric fixed shaft (25) are provided at the top of the front outrigger (7); Several transverse perforations (26) and several eccentric perforations (27) are provided on the rear cover (23). The transverse coupling shaft (24) and the eccentric fixed shaft (25) are respectively used to pass through the corresponding transverse through hole (26) and eccentric through hole (27).

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