Pipe culvert type gate flowmeter assembly

Abstract

A pipe culvert type gate flowmeter assembly, comprising: a flow measuring box arranged on one side of the gate, a plurality of ultrasonic transducer groups arranged on opposite sides of the flow measuring box along the water flow direction, and the two sides of the ultrasonic transducer groups are symmetrically arranged; each side of the ultrasonic transducer group comprises a plurality of multi-window transducers and a plurality of single-window transducers, the multi-window transducers are provided with at least two acoustic windows facing different directions, and the single-window transducers are provided with one acoustic window; each side of the multi-window transducers is opposite to the acoustic windows of the asymmetric multi-window transducers on the opposite side, and each side of the single-window transducers is opposite to the acoustic windows of the asymmetric single-window transducers on the opposite side, forming a plurality of ultrasonic channels arranged in a spatially inclined manner. The utility model arranges multiple groups of multi-window and single-window transducers, and makes the acoustic windows thereof opposite in an asymmetric and spatially inclined manner on the opposite sides, thereby constructing a complex ultrasonic channel network staggered in space.

Description

Technical Field

[0001] This utility model relates to the field of gate flow meter technology, specifically a culvert-type gate flow meter assembly. Background Technology

[0002] The culvert gate flow meter is a hydraulic automation device that integrates gate control and flow measurement functions. It is mainly used in open channel water conveyance systems, such as agricultural irrigation, river water distribution, and urban water supply and drainage. Utilizing ultrasonic principles for flow measurement is one of the mainstream technologies in the current culvert gate field. By setting gate units in the culvert structure, it can both cut off the water flow and regulate the flow, and complete the measurement of the flow rate through integrated measurement, providing key data support for water resource management, allocation, and billing.

[0003] However, the existing single ultrasonic channel or small number of channels are difficult to effectively capture the true velocity distribution of the entire flow cross section during the opening and closing of the gate and under complex flow conditions, resulting in insufficient representativeness and limited accuracy of the measurement results. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a culvert-type gate flow meter assembly.

[0005] The technical solution of this utility model is as follows: A culvert-type gate flow meter assembly includes: A flow meter box is installed on one side of the gate. Multiple ultrasonic transducer groups are installed on opposite sides of the flow direction inside the flow measurement box, with the ultrasonic transducer groups on both sides arranged symmetrically. Each ultrasonic transducer group includes multiple multi-window transducers and multiple single-window transducers. The multi-window transducers are provided with at least two acoustic windows facing different directions, and the single-window transducers are provided with one acoustic window. The acoustic windows of the multi-window transducers on each side are aligned with the acoustic windows of the asymmetrical multi-window transducers on the opposite side, and the acoustic windows of the single-window transducers on each side are aligned with the acoustic windows of the asymmetrical single-window transducers on the opposite side, forming multiple ultrasonic channels arranged at an angle in space.

[0006] Preferably, the multi-window transducer includes two acoustic windows, which are respectively directed to the acoustic windows of two different multi-window transducers on the opposite side, and the two directed acoustic windows are located on different horizontal planes.

[0007] Preferably, the single-window transducer and the opposite single-window transducer form an ultrasonic channel that is arranged at an angle in space.

[0008] Furthermore, the acoustic window is a transceiver integrated acoustic window, capable of alternately transmitting and receiving ultrasonic signals.

[0009] The multiple single-window transducers are arranged symmetrically along the circumferential direction on the same side, with spacing between them and the multi-window transducers on the same side.

[0010] The flow meter has a rectangular or circular structure.

[0011] Preferably, the end of the flow measuring box furthest from the gate is the inlet, and a conical guide shroud is installed at the inlet. The maximum outer diameter of the guide shroud is larger than the inner diameter of the flow measuring box. The tapered structure of the conical guide shroud effectively smooths the water flow and disrupts large-scale vortices, making the flow velocity distribution across the pipe cross-section more uniform when the water enters the main body of the flow measuring box. This ensures that the ultrasonic channel measures a representative flow velocity.

[0012] To facilitate the stable placement of the flow guide and flow measuring box on the bottom of the canal, the lower end of the flow guide has a supporting plane.

[0013] The upper part of the flow meter box is equipped with an electronic water gauge to monitor the water level. The electronic water gauge provides a key, dynamically changing geometric parameter—the flow area—for the three-dimensional ultrasonic flow velocity measurement network, thereby converting high-precision flow velocity data into higher-precision total flow data.

[0014] The beneficial effects of this utility model are as follows: By arranging multiple sets of multi-window and single-window transducers, and having their acoustic windows oriented asymmetrically and spatially tilted on opposite sides, a complex ultrasonic channel network with spatially interwoven distribution is constructed. This network can simultaneously capture velocity information from a large number of points within the flow cross-section from multiple angles and levels, achieving high-precision reconstruction of the velocity distribution across the entire cross-section. This reduces the shortcomings of existing technologies that cannot accurately reflect the velocity distribution under complex flow conditions due to the arrangement of a single or small number of channels, thus improving the representativeness and accuracy of flow measurement.

[0015] The conical guide shroud installed at the inlet of the flow measuring box can smoothly guide and collect the water flow. Its tapered structure effectively straightens the incoming flow, breaks up large-scale vortices, and smooths out turbulence, making the water flow entering the measurement area more uniform and stable in cross-section, thus ensuring the full performance of the three-dimensional measurement network. Attached Figure Description

[0016] In the attached diagram: Figure 1 This is a structural diagram; Figure 2 This is a partial structural diagram; Figure 3 This is a top view; Figure 4 for Figure 3 A schematic diagram of the AA-direction cross-section structure; Figure 5 A schematic diagram illustrating the ultrasonic channel formed by the ultrasonic transducer assembly. The components represented by the various reference numerals in the diagram are: 1. Gate; 2. Flow measuring box; 21. Inlet; 3. Flow guide; 4. Multi-window transducer; 5. Single-window transducer; 6. Support plane; 7. Electronic water gauge. Detailed Implementation

[0017] Example 1 See Figure 1 , Figure 2 and Figure 3 As shown, a culvert-type gate flow meter assembly includes a flow measuring box 2 and multiple ultrasonic transducer groups. The flow measuring box 2 has a rectangular or circular structure and is located on one side of the gate 1. Multiple ultrasonic transducer groups are located on opposite sides of the flow measuring box 2 along the direction of water flow, and the ultrasonic transducer groups on both sides are symmetrically arranged.

[0018] See Figure 4 As shown, each side of the ultrasonic transducer group in this embodiment includes four multi-window transducers 4 and two single-window transducers 5. The multi-window transducers 4 have two acoustic windows facing different directions, and the single-window transducers 5 have one acoustic window. Therefore, this embodiment has a total of eight multi-window transducers 4 and four single-window transducers 5. The multi-window transducers 4 are existing technology, and the acoustic windows are integrated transceiver windows, capable of alternately transmitting and receiving ultrasonic signals. The transducer model in this embodiment can be FT-17SL, a piezoelectric ceramic ultrasonic sensor, mainly used in flow meters and other equipment; the model is selected according to the actual situation.

[0019] See Figure 5 As shown, the acoustic windows of the multi-window transducers 4 on each side are opposed to those of the asymmetrical multi-window transducers 4 on the opposite side, and the acoustic windows of the single-window transducers 5 on each side are opposed to those of the asymmetrical single-window transducers 5 on the opposite side, forming multiple ultrasonic channels arranged at an angle in space. By arranging multiple sets of multi-window and single-window transducers 5, and making their acoustic windows opposed to each other on opposite sides in an asymmetrical and spatially inclined manner, a complex ultrasonic channel network with interleaved distribution in space is constructed. This network can simultaneously capture the velocity information of a large number of points within the flow cross-section from multiple angles and levels, achieving high-precision reconstruction of the velocity distribution of the entire cross-section. This reduces the shortcomings of existing technologies that cannot truly reflect the velocity distribution under complex flow conditions due to the arrangement of a single or small number of channels, and improves the representativeness and accuracy of flow measurement.

[0020] The multi-window transducer 4 includes two acoustic windows with an angle between them, which is an acute angle. The two acoustic windows are respectively directed to the acoustic windows of two different multi-window transducers 4 on the opposite side, and the two directed acoustic windows are located on different horizontal planes.

[0021] Multiple single-window transducers 5 on the same side are arranged circumferentially and symmetrically, spaced apart from the multi-window transducers 4 on the same side. The opposing beams of the single-window transducers 5 and the single-window transducers 5 on the opposite side form an ultrasonic channel arranged at an angle in space.

[0022] The end of the flow measuring box 2 furthest from the gate 1 is the inlet 21. A conical guide shroud 3 is installed at the inlet 21, with the maximum outer diameter of the guide shroud 3 being larger than the inner diameter of the flow measuring box 2. The tapered structure of the conical guide shroud 3 effectively smooths the water flow and disrupts large-scale vortices, making the flow velocity distribution across the pipe cross-section more uniform when the water enters the main body of the flow measuring box 2. This ensures that the ultrasonic channel measures a representative flow velocity. To facilitate the stable placement of the guide shroud 3 and the flow measuring box 2 on the bottom of the channel, the lower end of the guide shroud 3 has a supporting plane 6.

[0023] In this embodiment, an electronic water level gauge 7 for monitoring water level is installed on the upper part of the flow measurement box 2. The electronic water level gauge 7 is an existing structure. The electronic water level gauge 7 provides a key, dynamically changing geometric parameter—the flow area—for the three-dimensional ultrasonic flow velocity measurement network, thereby converting high-precision flow velocity data into higher-precision total flow data.

[0024] It should be noted that, for ease of understanding, the appendix... Figure 5 This is a schematic diagram of the ultrasonic channel formed by four multi-window transducers 4 and two single-window transducers 5 after they are directed to each other.

Claims

1. A culvert-type gate flow meter assembly, characterized in that, include: A flow measuring box (2) is installed on one side of the gate (1). Multiple ultrasonic transducer groups are set in the flow measuring box (2) on opposite sides along the water flow direction, with the ultrasonic transducer groups on both sides arranged symmetrically. Each side of the ultrasonic transducer group includes multiple multi-window transducers (4) and multiple single-window transducers (5). The multi-window transducers (4) are provided with at least two acoustic windows facing different directions, and the single-window transducers (5) are provided with one acoustic window. The multi-window transducer (4) on each side is oriented to the acoustic window of the asymmetrical multi-window transducer (4) on the opposite side, and the single-window transducer (5) on each side is oriented to the acoustic window of the asymmetrical single-window transducer (5) on the opposite side, forming multiple ultrasonic channels arranged at an angle in space.

2. The culvert-type gate flowmeter assembly according to claim 1, characterized in that, The multi-window transducer (4) includes two acoustic windows, which are respectively opposed to the acoustic windows of two different multi-window transducers (4) on the opposite side, and the two opposing acoustic windows are located on different horizontal planes.

3. The culvert-type gate flowmeter assembly according to claim 1, characterized in that, The single-window transducer (5) and the opposite single-window transducer (5) form an ultrasonic channel that is tilted in space.

4. The culvert-type gate flowmeter assembly according to claim 1, characterized in that, The acoustic window is a transceiver integrated acoustic window, capable of alternately transmitting and receiving ultrasonic signals.

5. The culvert-type gate flowmeter assembly according to claim 1, characterized in that, Multiple single-window transducers (5) on the same side are arranged circumferentially and symmetrically, and are spaced apart from the multi-window transducers (4) on the same side.

6. The culvert-type gate flowmeter assembly according to claim 1, characterized in that, The flow meter (2) has a rectangular or circular structure.

7. The culvert-type gate flowmeter assembly according to claim 6, characterized in that, The end of the flow measuring box (2) away from the gate (1) is the inlet (21), and a conical guide shroud (3) is provided at the inlet (21). The maximum outer diameter of the guide shroud (3) is greater than the inner diameter of the flow measuring box (2).

8. The culvert-type gate flowmeter assembly according to claim 7, characterized in that, The lower end of the flow guide (3) has a support plane (6).

9. The culvert-type gate flowmeter assembly according to claim 1, characterized in that, The upper part of the flow measuring box (2) is equipped with an electronic water level gauge (7) for monitoring water level.

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