Ultrasonic open channel flowmeter

Abstract

The utility model relates to the technical field of ultrasonic open channel flowmeters, in particular to an ultrasonic open channel flowmeter. The flow calculation device comprises a flow calculation transmitter arranged on an arc surface of a mounting rod and a water measuring weir groove mounted in an open channel, the upper end of the water measuring weir groove is fixedly connected with a mounting frame, and an ultrasonic probe is mounted at the upper end of the mounting frame. The semicircular grooves of the two lifting rods are clamped on the mounting rod, then the threaded rod is inserted into the two lifting rods and the mounting rod, and then the threaded rod is fixed by screwing the nuts on the two sides, so that the flow calculation transmitter is placed on the lifting rods to be lifted, then the flow calculation transmitter is fixed through the pinch plates and the screws, and when other flow calculation transmitters need to be mounted, the flow calculation transmitter can be fixed through the pinch plates and the screws. And the lifting rod can be detached and mounted on other mounting rods for lifting, so that the effects of avoiding manual lifting and reducing the labor intensity of workers are achieved as far as possible.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic open channel flow meter technology, and in particular to an ultrasonic open channel flow meter. Background Technology

[0002] Ultrasonic open channel flow meters are used to measure the flow rate of open channels in rivers. An ultrasonic open channel flow meter consists of a mounting rod, a measuring weir, a mounting frame, a flow calculation transmitter, connecting lines, and an ultrasonic probe. When measuring the flow rate of an open channel, the measuring weir is installed inside the channel. As water flows out of the weir, the ultrasonic probe on the mounting frame is activated, emitting ultrasonic pulses that propagate through the medium to the water surface. After reflection, the pulses return through the medium to the receiving transducer, allowing the measurement of the distance from the probe to the reflecting surface. The data is then transmitted via the connecting lines to the flow calculation transmitter for calculation, thus obtaining the flow rate of the open channel.

[0003] The inventors discovered in their daily work that when using ultrasonic open channel flow meters, the installation of the flow meter transmitter and the mounting rod requires workers to hold the flow meter transmitter while simultaneously aligning it with the mounting holes on the mounting plate and screwing in the screws for installation and fixation. This causes workers to experience arm fatigue from holding the flow meter transmitter for extended periods, potentially increasing their labor intensity. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in actual use, when installing the flow meter transmitter and the mounting rod, the worker needs to hold the flow meter transmitter while it is being installed. Then, the worker needs to align the flow meter transmitter with the mounting holes on the mounting plate and screw it in to fix it. This causes the worker's arm to get tired after holding the flow meter transmitter for a long time, which may increase the worker's labor intensity. Therefore, an ultrasonic open channel flow meter is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ultrasonic open channel flow meter, comprising a flow calculation transmitter disposed on the arc surface of an mounting rod and a measuring weir installed in the open channel, wherein a mounting frame is fixedly connected to the upper end of the measuring weir, an ultrasonic probe is mounted on the upper end of the mounting frame, and the ultrasonic probe and the flow calculation transmitter are fixed together by a connecting wire; a lifting assembly is disposed on the arc surface of the mounting rod, and a detection assembly is disposed on one side of the mounting frame; the lifting assembly comprises two identical lifting rods disposed on the arc surface of the mounting rod, a threaded rod penetrating one side of the lifting rod, the threads at both ends of the threaded rod being opposite, a nut being threadedly connected to the arc surface of the threaded rod, and the threaded rod penetrating the mounting rod.

[0006] The effect achieved by the above components is as follows: By setting up the lifting assembly, before installing the flow meter transmitter onto the mounting rod, the semi-circular grooves of the two lifting rods are engaged with the mounting rod. Then, the threaded rod is inserted into the two lifting rods and the mounting rod, and then the nuts on both sides are tightened to fix it. Thus, the flow meter transmitter is placed on the lifting rods for support. Then, the flow meter transmitter is fixed by the buckle plate and screws. When it is necessary to install other flow meter transmitters, the lifting rods can be disassembled and installed on other mounting rods for support, thereby minimizing the need for manual lifting and reducing the labor intensity of workers.

[0007] Preferably, a side block is fixedly connected to one side of the lifting rod, an L-shaped block is slidably inserted into the left end of the side block, and a first spring is fixedly connected between the L-shaped block and the side block.

[0008] The effect achieved by the above components is as follows: by setting the first spring, the L-shaped block, and the side block, the flow calculation transmitter is placed between the L-shaped blocks on the lifting rod, so that the first spring is stretched, and its reverse force pulls the L-shaped block, thereby limiting the flow calculation transmitter.

[0009] Preferably, an L-shaped rod is slidably inserted into the front of the lifting rod, and a second spring is fixedly connected between the L-shaped rod and the side block.

[0010] The effect achieved by the above components is as follows: the flow calculation transmitter is placed between the L-shaped rod and the mounting rod on the lifting rod, so that the second spring is stretched, and its reverse force pulls the L-shaped rod to limit the flow calculation transmitter.

[0011] Preferably, one side of both the L-shaped block and the L-shaped rod is provided with anti-slip strips, and the anti-slip strips are rubber strips.

[0012] The effect achieved by the above components is to increase the friction between the L-shaped block and L-shaped rod and the flow calculation transmitter by setting anti-slip stripes.

[0013] Preferably, the detection component includes a mounting box disposed on the inner wall of the mounting frame, a laser lamp being installed on the inner wall of the mounting box, and a detection groove being provided on one side of the mounting frame.

[0014] The effect achieved by the above components is as follows: when it is necessary to detect whether the two sides of the measuring weir are level, the controller causes the laser lamp in the mounting box to emit a laser beam, which illuminates the detection tank, thereby measuring the two sides of the measuring weir.

[0015] Preferably, a level is installed at the left end of the mounting box, and the mounting box is rotatably connected to the mounting frame by means of a rotating shaft.

[0016] The effect achieved by the above components is as follows: when the two sides of the measuring weir are not level, the worker adjusts the angle of the installation box so that the bubble in the leveling rod is centered, and then turns on the laser light to see if the illuminated spot is in the detection tank.

[0017] Preferably, the mounting box has heat dissipation holes on its back, and a third spring is provided between the mounting box and the mounting bracket.

[0018] The effect achieved by the above components is to dissipate heat from the laser lamp through the heat dissipation holes.

[0019] Preferably, one end of the third spring is fixed to the mounting box, and the other end of the third spring is fixed to the mounting bracket.

[0020] The effect achieved by the above components is that by setting a third spring, one side of the heat dissipation hole of the mounting box is normally inclined downward, thereby preventing rainwater from entering the mounting box through the heat dissipation hole.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] In this invention, by setting up a lifting assembly, before installing the flow meter transmitter onto the mounting rod, the semi-circular grooves of the two lifting rods are engaged with the mounting rod. Then, threaded rods are inserted into the two lifting rods and the mounting rod, and nuts are tightened on both sides to secure the device. The flow meter transmitter is then placed on the lifting rods for support, and fixed with a buckle plate and screws. When installing other flow meter transmitters, the lifting rods can be disassembled and installed on other mounting rods for support. This minimizes the need for manual lifting, reducing worker fatigue. It solves the problem that when installing the flow meter transmitter onto the mounting rod, workers need to lift the transmitter while simultaneously aligning it with the mounting holes on the buckle plate and tightening screws for installation, which can lead to prolonged arm fatigue and potentially increased labor intensity. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the lifting component of this utility model in the event of an explosion;

[0025] Figure 3 This is a three-dimensional structural diagram of the detection component of this utility model.

[0026] Legend: 1. Flow transmitter; 2. Lifting assembly; 3. Detection assembly; 4. Mounting rod; 5. Connecting wire; 6. Measuring weir; 7. Mounting bracket; 8. Ultrasonic probe; 21. Lifting rod; 22. Side block; 23. L-shaped block; 24. First spring; 25. L-shaped rod; 26. Second spring; 27. Threaded rod; 28. Nut; 31. Mounting box; 32. Detection groove; 33. Rotating shaft; 34. Third spring; 35. Leveling gauge; 36. Heat dissipation hole. Detailed Implementation

[0027] Reference Figure 1 and Figure 3 As shown, this utility model provides a technical solution: an ultrasonic open channel flow meter includes a flow calculation transmitter 1 set on the arc surface of an installation rod 4 and a measuring weir 6 installed in the open channel. The upper end of the measuring weir 6 is fixedly connected to an installation frame 7, and an ultrasonic probe 8 is installed on the upper end of the installation frame 7. The ultrasonic probe 8 and the flow calculation transmitter 1 are fixed together by a connecting line 5. A lifting component 2 is provided on the arc surface of the installation rod 4, and a detection component 3 is provided on one side of the installation frame 7.

[0028] The following section will explain the specific settings and functions of the lifting component 2 and the detection component 3.

[0029] Reference Figure 2As shown in this embodiment: the lifting assembly 2 includes two identical lifting rods 21 disposed on the arc surface of the mounting rod 4. A threaded rod 27 passes through one side of the lifting rod 21. The threads at both ends of the threaded rod 27 are opposite. A nut 28 is threadedly connected to the arc surface of the threaded rod 27. The threaded rod 27 passes through the mounting rod 4. By setting up the lifting assembly 2, before installing the flow meter transmitter 1 onto the mounting rod 4, the semi-circular grooves of the two lifting rods 21 are engaged with the mounting rod 4. Then, the threaded rod 27 is inserted into the two lifting rods 21 and the mounting rod 4, and then fixed by tightening the nuts 28 on both sides. Thus, the flow meter transmitter 1 is placed on the lifting rods 21 for support. Then, the flow meter transmitter 1 is fixed by the buckle plate and screws. When it is necessary to install other flow meter transmitters 1, the lifting rods 21 can be disassembled and installed on other mounting rods 4 for support, thereby minimizing the need for manual lifting and reducing the labor intensity of workers. A side block 22 is fixedly connected to one side of the lifting rod 21. An L-shaped block 23 is slidably inserted at the left end of the support rod 21. A first spring 24 is fixedly connected between the L-shaped block 23 and the side block 22. By setting the first spring 24, the L-shaped block 23, and the side block 22, the flow calculation transmitter 1 is placed between the L-shaped blocks 23 on the support rod 21, so that the first spring 24 is stretched, and its reverse force pulls the L-shaped block 23, thereby limiting the flow calculation transmitter 1. An L-shaped rod 25 is slidably inserted on the front of the support rod 21. The L-shaped rod 25 and the side block A second spring 26 is fixedly connected between 22. The flow calculation transmitter 1 is placed between the L-shaped rod 25 and the mounting rod 4 on the lifting rod 21, so that the second spring 26 is stretched, and its reverse force pulls the L-shaped rod 25 to limit the flow calculation transmitter 1. Anti-slip strips are provided on one side of the L-shaped block 23 and the L-shaped rod 25. The anti-slip strips are rubber strips. By setting the anti-slip strips, the friction between the L-shaped block 23 and the L-shaped rod 25 and the flow calculation transmitter 1 is increased.

[0030] Reference Figure 3As shown, in this embodiment: the detection component 3 includes a mounting box 31 disposed on the inner wall of the mounting frame 7. A laser lamp is installed on the inner wall of the mounting box 31. A detection groove 32 is provided on one side of the mounting frame 7. When it is necessary to detect whether the two sides of the measuring weir 6 are level, the laser lamp in the mounting box 31 emits a laser beam through the controller, which illuminates the detection groove 32, thereby leveling the two sides of the measuring weir 6. A leveling rod 35 is installed on the left end of the mounting box 31. The mounting box 31 is rotatably connected to the mounting frame 7 via a rotating shaft 33. When the two sides of the measuring weir 6 are not level, the worker adjusts the angle of the mounting box 31 to make it level. With the bubble level centered in the leveling rod 35, the laser light is turned on to check if the illuminated spot is in the detection slot 32. A heat dissipation hole 36 is provided on the back of the mounting box 31. A third spring 34 is provided between the mounting box 31 and the mounting bracket 7. The laser light is cooled through the heat dissipation hole 36. One end of the third spring 34 is fixed to the mounting box 31, and the other end of the third spring 34 is fixed to the mounting bracket 7. By setting the third spring 34, one side of the heat dissipation hole 36 of the mounting box 31 is normally inclined downward, thereby preventing rainwater from entering the mounting box 31 through the heat dissipation hole 36.

[0031] Working principle:

[0032] When measuring the flow rate of an open channel, a measuring weir 6 is installed inside the channel. As water flows out of the weir 6, the ultrasonic probe 8 on the mounting frame 7 is activated, causing the emitted ultrasonic pulses to propagate through the medium to the water surface. After reflection, the pulses return through the medium to the receiving transducer, allowing the measurement of the distance from the probe to the reflecting surface. The data is then transmitted via connecting line 5 to the flow calculation transmitter 1 for calculation, thus obtaining the flow rate of the open channel. Before installing the flow calculation transmitter 1 onto the mounting rod 4, the semi-circular slots of the two lifting rods 21 are secured to the mounting rod 4. Then, the threaded rods 27 are inserted into the two... The flow transmitter 1 is placed on the lifting rod 21 and the mounting rod 4, and then fixed by screwing nuts 28 on both sides. The flow transmitter 1 is then secured by fasteners and screws. When installing other flow transmitters 1, the lifting rod 21 can be disassembled and installed on other mounting rods 4, thus minimizing the need for manual lifting and reducing worker workload. By setting a first spring 24, L-shaped blocks 23, and side blocks 22, the flow transmitter 1 is placed between the L-shaped blocks 23 on the lifting rod 21, causing the first spring 24 to be stretched. The reverse force pulls the L-shaped block 23, thus limiting the flow rate transmitter 1. The flow rate transmitter 1 is placed between the L-shaped rod 25 and the mounting rod 4 on the lifting rod 21, causing the second spring 26 to be stretched. This reverse force pulls the L-shaped rod 25, thus limiting the flow rate transmitter 1. Anti-slip stripes increase the friction between the L-shaped block 23, the L-shaped rod 25, and the flow rate transmitter 1. When it is necessary to check whether the two sides of the measuring weir 6 are level, the controller activates the laser lamp (flow rate transmitter 1, ultrasonic probe 8, and laser) inside the mounting box 31. (The lamps are all existing market products, and their specific usage is not described in detail here as existing technology.) They emit laser light to illuminate the detection groove 32, thereby measuring the two sides of the water weir 6. When the two sides of the water weir 6 are not level, the worker adjusts the angle of the mounting box 31 so that the bubble in the leveling rod 35 is centered, and then turns on the laser light to see if the illuminated spot is in the detection groove 32. The laser light is cooled through the heat dissipation hole 36. By setting a third spring 34, one side of the heat dissipation hole 36 of the mounting box 31 is normally tilted downward, thereby preventing rainwater from entering the mounting box 31 through the heat dissipation hole 36.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. An ultrasonic open channel flow meter, comprising a flow calculation transmitter (1) disposed on the arc surface of an mounting rod (4) and a measuring weir (6) installed in the open channel, characterized in that: The upper end of the measuring weir (6) is fixedly connected to the mounting frame (7), and the upper end of the mounting frame (7) is equipped with an ultrasonic probe (8). The ultrasonic probe (8) and the flow calculation transmitter (1) are fixed together by a connecting line (5). The arc surface of the mounting rod (4) is provided with a lifting assembly (2). One side of the mounting frame (7) is provided with a detection assembly (3). The lifting assembly (2) includes two identical lifting rods (21) set on the arc surface of the mounting rod (4). One side of the lifting rod (21) is penetrated by a threaded rod (27). The threads at both ends of the threaded rod (27) are opposite. The arc surface of the threaded rod (27) is threaded with a nut (28). The threaded rod (27) penetrates the mounting rod (4).

2. The ultrasonic open channel flow meter according to claim 1, characterized in that: A side block (22) is fixedly connected to one side of the lifting rod (21), and an L-shaped block (23) is slidably inserted into the left end of the side block (22). A first spring (24) is fixedly connected between the L-shaped block (23) and the side block (22).

3. An ultrasonic open channel flow meter according to claim 2, characterized in that: An L-shaped rod (25) is slidably inserted into the front of the lifting rod (21), and a second spring (26) is fixedly connected between the L-shaped rod (25) and the side block (22).

4. An ultrasonic open channel flow meter according to claim 3, characterized in that: Both the L-shaped block (23) and the L-shaped rod (25) have anti-slip stripes on one side, and the anti-slip stripes are rubber strips.

5. An ultrasonic open channel flow meter according to claim 4, characterized in that: The detection component (3) includes a mounting box (31) disposed on the inner wall of the mounting frame (7), a laser lamp is installed on the inner wall of the mounting box (31), and a detection groove (32) is provided on one side of the mounting frame (7).

6. An ultrasonic open channel flow meter according to claim 5, characterized in that: A leveling rod (35) is installed on the left end of the mounting box (31), and the mounting box (31) is rotatably connected to the mounting frame (7) by means of a pivot (33).

7. An ultrasonic open channel flow meter according to claim 6, characterized in that: The mounting box (31) has a heat dissipation hole (36) on its back, and a third spring (34) is provided between the mounting box (31) and the mounting bracket (7).

8. An ultrasonic open channel flow meter according to claim 7, characterized in that: One end of the third spring (34) is fixed to the mounting box (31), and the other end of the third spring (34) is fixed to the mounting bracket (7).

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