Dynamic water level measurement device

Abstract

The present invention discloses a dynamic water level measuring device, which relates to the technical field of flow measurement equipment. The main purpose is to provide a dynamic water level measuring device that can improve the measurement accuracy. The main technical solution of the present invention is as follows: A dynamic water level measuring device includes: a cylinder body rotatably connected to a support beam; a measuring component, which includes a rod body, a floating ball and a connecting component. The rod body is longitudinally arranged inside the cylinder body, and there is a first cavity between the cylinder body and the rod body. The floating ball is slidably arranged on the rod body. The connecting component is arranged at the lower part of the cylinder body, and both ends of the connecting component have water inlets, and the water inlets are interconnected with the first cavity; a driving component rotatably connected to the cylinder body. The present invention is mainly used for measuring the dynamic water level.

Description

Technical Field

[0001] The invention relates to the technical field of flow metering equipment, and in particular to a dynamic water level measuring device. Background Art

[0002] The open channel weir flowmeter is a channel flow metering device, which is widely used in the measurement of open channel water flow in inter-basin water transfer, agricultural irrigation, reclaimed water discharge and other links. Its working principle is to set up a standard weir in the open channel and measure the water level at the specified position. Since the flow through the weir is in correspondence with the water level, the measured real-time water level can be converted into instantaneous flow according to the flow formula or the empirical relationship between the two. The Parshall flume flowmeter is currently the most widely used and mature open channel weir flowmeter, accounting for more than 95%. The Parshall flume flowmeter is mainly composed of two parts: the Parshall flume and the open channel flowmeter. The Parshall flume can have a variety of specifications, and the open channel flowmeter is installed at a specified position, with the function of real-time measurement of water level and conversion into instantaneous flow, while also having conventional flow meter functions such as cumulative flow, data storage, and real-time transmission.

[0003] In summary, the accuracy of flow measurement by Parshall flume flowmeter is mainly affected by two aspects: the accuracy of Parshall flume size processing and the accuracy of water level measurement by open channel flowmeter. Depending on the size, the processing materials of Parshall flume vary greatly, including PVC, iron plate, stainless steel plate, concrete, etc. Due to factors such as processing level, use conditions, and ambient temperature, the actual size of the Parshall flume in use is often quite different from the designed size, thus affecting the accuracy of flow measurement. At the same time, the installation position of the open channel flowmeter, the floating amplitude of the water surface, etc., have a profound impact on the accuracy of the water level measurement of the open channel flowmeter, and thus also affect the accuracy of flow measurement.

[0004] In the prior art, the water level is mainly measured by a water level sensor, which is then converted into an instantaneous flow value according to the type of Parshall flume. However, due to the drastic up and down fluctuations of the water surface, the data measured by the water level sensor is inaccurate. At the same time, the water level sensor is prone to tilt, resulting in measurement errors. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a dynamic water level measuring device, the main purpose of which is to provide a dynamic water level measuring device capable of improving measurement accuracy.

[0006] In order to achieve the above object, the present invention mainly provides the following technical solutions:

[0007] An embodiment of the present invention provides a dynamic water level measuring device, the device comprising:

[0008] A cylinder body, the cylinder body being rotatably connected to the support beam;

[0009] Measuring component, the measuring component includes a rod body, a floating ball and a connecting component. The rod body is longitudinally arranged inside the cylinder body. There is a first cavity between the cylinder body and the rod body. The floating ball is slidably arranged on the rod body. The connecting component is arranged at the lower part of the cylinder body. Both ends of the connecting component have water inlets, and the water inlets are communicated with the first cavity;

[0010] Driving component, the driving component is rotatably connected to the cylinder body.

[0011] Furthermore, the connecting component includes a connecting seat and a connecting rod. The connecting seat is rotatably connected to one end of the cylinder body, and the connecting rod is horizontally arranged on the connecting seat.

[0012] Furthermore, the connecting component further includes a first fixing seat. The first fixing seat is arranged inside the connecting seat, and one end of the rod body is fixedly connected to the first fixing seat.

[0013] Furthermore, the connecting rod has a second cavity, the connecting seat has a third cavity, and the first cavity, the third cavity and the second cavity are communicated in sequence.

[0014] Furthermore, a second fixing seat, the second fixing seat is rotatably connected to the other end of the cylinder body, and the other end of the rod body is fixedly connected to the second fixing seat.

[0015] Furthermore, a horizontal component, the horizontal component is arranged at the end of the second fixing seat away from the rod body.

[0016] Furthermore, a signal output component, the signal output component is arranged at the end of the second fixing seat away from the rod body.

[0017] Furthermore, the driving component includes a driving motor and a rotating component. The output end of the driving motor is rotatably connected to the rotating component. The outside of the cylinder body has a first external thread, and the rotating component meshes with the first external thread.

[0018] Furthermore, the rotating component includes a first toothed ring and a connecting belt. The first toothed ring is sleeved on the cylinder body, one end of the connecting belt is connected to the driving motor, and the other end is connected to the first toothed ring.

[0019] Furthermore, a guiding component, the guiding component is arranged on both sides of the connecting component.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] In the technical solution provided by the embodiment of the present invention, the function of the cylinder is to support the measuring component and protect the rod body and the floating ball from being impacted by the water flow. The cylinder is rotatably connected to the support beam. The function of the measuring component is to measure the water level. The measuring component includes a rod body, a floating ball, and a connecting component. The rod body is longitudinally arranged inside the cylinder. There is a first cavity between the cylinder and the rod body. The floating ball is slidably arranged on the rod body. The connecting component is arranged at the lower part of the cylinder. Both ends of the connecting component have water inlets, and the water inlets are interconnected with the first cavity. The function of the driving component is to drive the cylinder to rotate. The driving component is rotatably connected to the cylinder. Compared with the prior art, the water level is measured by a water level sensor and then converted into an instantaneous flow value according to the type of the Parshall flume. However, due to the violent fluctuation of the water surface up and down, the data measured by the water level sensor is inaccurate. At the same time, the water level sensor is also prone to tilt, resulting in measurement errors. In this technical solution, the cylinder is rotatably arranged on the support beam. The function of the driving component is to drive the cylinder to rotate, so that the cylinder can move towards the bottom direction of the Parshall flume. The connecting component is arranged at the lower part of the cylinder, and the connecting component is in direct contact with the bottom of the Parshall flume. Water flows into the first cavity through the water inlets, causing the floating ball to float. The position of the floating ball is the height of the water level, thus achieving the effect of accurately measuring the water level height and further achieving the technical effect of improving the detection accuracy. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a dynamic water level measuring device provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of a connecting component provided by an embodiment of the present invention. Detailed Embodiments

[0024] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0025] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a dynamic water level measuring device, which includes:

[0026] A cylinder 1, and the cylinder 1 is rotatably connected to a support beam 9;

[0027] A measuring component, the measuring component includes a rod body 21, a floating ball 22, and a connecting component 23. The rod body 21 is longitudinally arranged inside the cylinder 1. There is a first cavity 11 between the cylinder 1 and the rod body 21. The floating ball 22 is slidably arranged on the rod body 21. The connecting component 23 is arranged at the lower part of the cylinder 1. Both ends of the connecting component 23 have water inlets 234, and the water inlets 234 are interconnected with the first cavity 11;

[0028] A driving component, and the driving component is rotatably connected to the cylinder 1.

[0029] In the technical solution provided by the embodiment of the present invention, the function of the cylinder 1 is to support the measuring component and protect the rod body 21 and the floating ball 22 from being impacted by the water flow. The cylinder 1 is rotatably connected to the support beam 9. The function of the measuring component is to measure the water level. The measuring component includes a rod body 21, a floating ball 22 and a communicating component 23. The rod body 21 is longitudinally arranged inside the cylinder 1. There is a first cavity 11 between the cylinder 1 and the rod body 21. The floating ball 22 is slidably arranged on the rod body 21. The communicating component 23 is arranged at the lower part of the cylinder 1. Both ends of the communicating component 23 have water inlets 234, and the water inlets 234 communicate with the first cavity 11. The function of the driving component is to drive the cylinder 1 to rotate. The driving component is rotatably connected to the cylinder 1. Compared with the prior art, the water level is measured by a water level sensor and then converted into an instantaneous flow value according to the type of the Parshall flume. However, due to the violent fluctuation of the water surface up and down, the data measured by the water level sensor is inaccurate. At the same time, the water level sensor is also prone to tilt, resulting in measurement errors. In this technical solution, the cylinder 1 is rotatably arranged on the support beam 9. The function of the driving component is to drive the cylinder 1 to rotate, so that the cylinder 1 can move towards the bottom direction of the Parshall flume. The communicating component 23 is arranged at the lower part of the cylinder 1, and the communicating component 23 is directly in contact with the bottom of the Parshall flume. Water flows into the first cavity 11 through the water inlets 234, causing the floating ball 22 to float. The position of the floating ball 22 is the height of the water level, thus achieving the function of accurately measuring the water level height, and further achieving the technical effect of improving the detection accuracy.

[0030] The function of the above-mentioned cylinder body 1 is to support the measuring component and protect the rod body 21 and the floating ball 22 from being impacted by the water flow. The cylinder body 1 is rotatably connected to the support beam 9. The cylinder body 1 has an open structure at both ends. The cylinder body 1 is made of stainless steel material or aluminum alloy material. The outer side of the cylinder body 1 is provided with a first external thread, so that the cylinder body 1 can be rotatably connected to the support beam 9. At the same time, the function of the driving component is to drive the cylinder body 1 to rotate. The driving component is rotatably connected to the cylinder body 1. The cylinder body 1 can move towards or away from the bottom of the water under the drive of the driving component; the function of the measuring component is to measure the water level. The measuring component includes a rod body 21, a floating ball 22 and a communicating component 23. The rod body 21 is longitudinally arranged inside the cylinder body 1. There is a first cavity 11 between the cylinder body 1 and the rod body 21. The floating ball 22 is slidably arranged on the rod body 21. The communicating component 23 is arranged at the lower part of the cylinder body 1. Both ends of the communicating component 23 have water inlets 234. The water inlets 234 communicate with the first cavity 11. The rod body 21 is longitudinally arranged in the cylinder body 1. The floating ball 22 is sleeved on the rod body 21. And the floating ball 22 can slide along the extending direction of the rod body 21. The rod body 21 can be made of stainless steel, aluminum alloy material or glass material. The surface of the rod body 21 is smooth, which can facilitate the movement of the floating ball 22. The rod body 21 needs to always maintain an angle perpendicular to the water surface, so as to improve the accuracy and precision of the measurement. The communicating component 23 is arranged at the bottom of the cylinder body 1. The bottom of the communicating component 23 is in contact with the bottom of the Parshall flume. Water inlets 234 are arranged at both ends of the communicating component 23. Water can enter the first cavity 11 through the water inlets 234, causing the floating ball 22 to float. The height of the floating ball 22 floating is the height of the water level. In this technical solution, the rod body 21 and the floating ball 22 are protected by the cylinder body 1 to avoid the direct impact of the water flow on the rod body 21 and the floating ball 22. Then, by rotatably arranging the cylinder body 1 on the support beam 9, the cylinder body 1 can move towards the bottom direction of the Parshall flume. The communicating component 23 is arranged at the lower part of the cylinder body 1. The communicating component 23 is directly in contact with the bottom of the Parshall flume. Water flows into the first cavity 11 through the water inlets 234, causing the floating ball 22 to float. The position of the floating ball 22 is the height of the water level, so as to achieve the function of accurately measuring the water level height, and further achieve the technical effect of improving the detection accuracy.

[0031] The water level is measured through the following steps:

[0032] 1. The control system controls the servo motor to move the dynamic water level measuring device forward and backward, so that the dynamic water level measuring device is located at the 2 / 3 position of the Parshall flume. The control system controls the servo motor to move the dynamic water level measuring device left and right, so that the dynamic water level measuring device is located at the center line position of the channel, thereby realizing that the dynamic water level measuring device is located at the water level measuring position.

[0033] 2. The control system controls the servo motor to move the moving water level measuring device up and down, so that the connecting component 23 reaches the bottom of the channel. At the same time, the verticality of the moving water level measuring device is determined by observing the horizontal component 5.

[0034] 3. The water in the channel enters the cylinder 1 through the connecting component 23. The floating ball 22 moves up and down with the water level, and the measured water level value is transmitted to the control system through the signal output component 6.

[0035] 4. Wait for the water level to stabilize, record 10 groups of real-time water level values within 10 minutes, and at the same time read the instantaneous flow rate value of the inspected open channel flowmeter.

[0036] 5. The arithmetic mean of the water levels is used as the final water level value h, and the arithmetic mean of the instantaneous flow rate values of the inspected open channel flowmeter is used as the final instantaneous flow rate value Q. i 。

[0037] Further, the connecting component 23 includes a connecting seat 231 and a connecting rod 232. The connecting seat 231 is rotatably connected to one end of the cylinder 1, and the connecting rod 232 is horizontally arranged on the connecting seat 231. In this embodiment, the connecting component 23 is further defined. One end of the connecting seat 231 is rotatably connected to one end of the cylinder 1, and the other end of the connecting seat 231 can be in contact with the bottom of the Parshall flume. The connecting seat 231 and the cylinder 1 are connected by a threaded connection, so that the connecting seat 231 is fixed on the cylinder 1. The connecting seat 231 and the connecting rod 232 are integrally formed structures. The connecting rod 232 horizontally penetrates the connecting seat 231. The connecting rod 232 has a second cavity 235, and the connecting seat 231 has a third cavity 236. The first cavity 11, the third cavity 236, and the second cavity 235 are connected in sequence, so that water enters the first cavity 11 through the second cavity 235 and the third cavity 236, thereby achieving the technical effect of raising the floating ball 22; optionally, the connecting component 23 further includes a first fixing seat 233. The first fixing seat 233 is arranged inside the connecting seat 231. One end of the rod body 21 is fixedly connected to the first fixing seat 233, so that the rod body 21 can be fixed inside the cylinder 1, thereby achieving the technical effect of fixing the rod body 21. Of course, the first fixing seat 233 can also adopt a bearing structure, so that the rod body 21 is rotatably connected to the first fixing seat 233. When the connecting component 23 rotates driven by the cylinder 1, the rod body 21 will not rotate with the rotation of the cylinder 1, thereby achieving the technical effect of keeping the rod body 21 stable.

[0038] Further, a second fixing seat 4 is rotatably connected to the other end of the cylinder 1, and the other end of the rod 21 is fixedly connected to the second fixing seat 4. In this embodiment, the second fixing seat 4 is added. The second fixing seat 4 is arranged at the other end of the cylinder 1. The second fixing seat 4 and the cylinder 1 are connected by a threaded connection. The other end of the rod 21 is fixedly connected to the second fixing seat 4, so that the rod 21 can be longitudinally fixed in the cylinder 1. Of course, the second fixing seat 4 can also adopt a bearing structure, so that the rod 21 is rotatably connected to the second fixing seat 4. When the connecting member 23 rotates driven by the cylinder 1, the rod 21 will not rotate with the rotation of the cylinder 1, thereby achieving the technical effect of keeping the rod 21 stable.

[0039] Further, a horizontal member 5 is arranged at the end of the second fixing seat 4 away from the rod 21. In this embodiment, the horizontal member 5 is added. The function of the horizontal member 5 is to detect in real time whether the rod 21 and the cylinder 1 are in a vertical state. The horizontal member 5 adopts a level. The horizontal member 5 is arranged at the end of the second fixing seat 4 away from the rod 21. If the rod 21 or the cylinder 1 is tilted, the bubble in the horizontal member 5 will deviate, thereby achieving the technical effect of detecting the vertical state of the rod 21 and the cylinder 1 in real time.

[0040] Further, a signal output member 6 is arranged at the end of the second fixing seat 4 away from the rod 21. In this embodiment, the signal output member 6 is added. The function of the signal output member 6 is to transmit the position of the floating ball 22 to the control system or the display system in real time. Personnel can determine the water level height according to the height of the floating ball 22, thereby achieving the technical effect of facilitating the acquisition and transmission of data.

[0041] Further, the driving member includes a driving motor 31 and a rotating member 32. The output end of the driving motor 31 is rotatably connected to the rotating member 32. The outer part of the cylinder 1 has a first external thread, and the rotating member 32 meshes with the first external thread. In this embodiment, the driving member is further defined. The driving motor 31 adopts a servo motor. The rotating member 32 can drive the cylinder 1 to rotate around its axis, so that the cylinder 1 moves towards or away from the bottom of the water, thereby achieving the technical effect of adjusting the distance between the cylinder 1 and the bottom of the water, and the measuring member can be placed at the bottom of the water, thereby achieving the technical effect of accurately measuring the water level; Optionally, the rotating member 32 includes a first toothed ring and a connecting belt. The first toothed ring is sleeved on the cylinder 1. One end of the connecting belt is connected to the driving motor 31, and the other end is connected to the first toothed ring. The connecting belt drives the first toothed ring to rotate around its axis under the drive of the driving motor 31, and the first toothed ring drives the cylinder 1 to rotate around its axis, so that the cylinder 1 moves towards or away from the bottom of the water, thereby achieving the technical effect of adjusting the distance between the cylinder 1 and the bottom of the water.

[0042] Furthermore, a flow guiding component 237 is added, and the flow guiding component 237 is arranged on both sides of the connecting component 23. In this embodiment, since the connecting component 23 needs to be in contact with the bottom of the Parshall flume, the water flow velocity will affect the position of the connecting component 23, resulting in deviation of the connecting component 23 and thus tilting of the connecting component 23. Therefore, the flow guiding component 237 is arranged on both sides of the connecting component 23. The flow guiding component 237 can make the water flow on both sides of the flow guiding component 237, reducing the impact force of the water flow on the connecting component 23, thereby achieving the technical effect of preventing the connecting component 23 from tilting.

[0043] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A dynamic water level measuring device, characterized in that, it includes: a cylinder body, the cylinder body is rotatably connected to a support beam; a measuring component, the measuring component includes a rod body, a floating ball and a communicating component, the rod body is longitudinally arranged inside the cylinder body, a first cavity is formed between the cylinder body and the rod body, the floating ball is slidably arranged on the rod body, the communicating component is arranged at the lower part of the cylinder body, both ends of the communicating component have water inlets, the water inlets communicate with the first cavity, the communicating component includes a connecting seat and a communicating rod, the connecting seat is rotatably connected to one end of the cylinder body, the communicating rod is horizontally arranged on the connecting seat, the communicating component further includes a first fixing seat, the first fixing seat is arranged inside the connecting seat, and one end of the rod body is fixedly connected to the first fixing seat; a second fixing seat, the second fixing seat is rotatably connected to the other end of the cylinder body, and the other end of the rod body is fixedly connected to the second fixing seat; a horizontal component, the horizontal component is arranged at one end of the second fixing seat away from the rod body; a guiding component, the guiding component is arranged on both sides of the communicating component; a driving component, the driving component is rotatably connected to the cylinder body, and the driving component drives the cylinder body to rotate.

2. The dynamic water level measuring device according to claim 1, characterized in that, the communicating rod has a second cavity, the connecting seat has a third cavity, and the first cavity, the third cavity and the second cavity communicate in sequence.

3. The dynamic water level measuring device according to claim 1, characterized in that, it further includes: a signal output component, the signal output component is arranged at one end of the second fixing seat away from the rod body.

4. The dynamic water level measuring device according to any one of claims 1 to 3, characterized in that, the driving component includes a driving motor and a rotating component, the output end of the driving motor is rotatably connected to the rotating component, the outer part of the cylinder body has a first external thread, and the rotating component meshes with the first external thread.

5. The dynamic water level measuring device according to claim 4, characterized in that, the rotating component includes a first toothed ring and a connecting belt, the first toothed ring is sleeved on the cylinder body, one end of the connecting belt is connected to the driving motor, and the other end is connected to the first toothed ring.

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