Ultrasonic Doppler open channel flow metering equipment

Abstract

The utility model relates to the technical field of open channel flow meters, and discloses an ultrasonic Doppler open channel flow metering device which comprises a Parshall groove and a sensor probe, a support is fixedly installed on the top side of one end of a water inlet of the Parshall groove, and an ultrasonic probe is fixedly installed in the center of the top of the support. Rail frames are fixedly installed on the two sides of the support, a rack plate is fixedly installed in the rail frame on one side, an adjusting component is arranged between the rail frames on the two sides, and the sensor probe is arranged at the bottom of the adjusting component. According to the ultrasonic Doppler open channel flow metering equipment, the flow of water flowing through a Parshall groove area can be detected through the ultrasonic probe, then the water flowing speed can be measured and calculated through the sensor probe according to the Doppler time effect, and then the instantaneous flow can be converted according to a formula through the sectional area of the sensor. Therefore, two flow detection modes can be combined to detect the water flow.

Description

Technical Field

[0001] The utility model relates to the technical field of open channel flowmeters, in particular to ultrasonic Doppler open channel flowmetering equipment. Background Art

[0002] An open channel flow meter is a system detection device that can measure water flow in an open channel or canal. There are many types of open channel flow meter monitoring systems, which are suitable for flow measurement in rectangular, trapezoidal open channels and culverts such as reservoirs, rivers, water conservancy projects, urban water supply, sewage treatment, farmland irrigation, water administration and water resources.

[0003] Most of the existing open channel flow meters are used alone, and there are no open channel flow meters for combined use. Only one set of data can be measured by one flow meter. Moreover, when using a Doppler open channel flow meter, it is necessary to manually go down into the underwater channel, which is dangerous. Therefore, further improvements can be made. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides the following technical solutions: an ultrasonic Doppler open channel flow metering device, comprising a Parshall flume and a sensor probe, a bracket is fixedly installed on the top side of one end of the water inlet of the Parshall flume, an ultrasonic probe is fixedly installed at the top center of the bracket, rail frames are fixedly installed on both sides of the bracket, a rack plate is fixedly installed inside one side of the rail frame, an adjusting component is arranged between the two side rail frames, and the sensor probe is arranged at the bottom of the adjusting component.

[0005] As an optimization, the adjusting component includes a sliding sleeve arranged on the outside of the rail frames on both sides, a fixing plate is fixedly installed between the sliding sleeves on both sides, a mounting plate is fixedly installed in the middle of the fixing plate, a top plate is fixedly installed on the top of the mounting plate, a mounting shell is fixedly installed on the front side of the mounting plate, a servo motor is fixedly installed inside the mounting shell, and a gear is fixedly installed on one end of the output shaft of the servo motor.

[0006] As an optimization, the gear and the rack plate are meshed and connected. By starting the servo motor, the gear will be driven to rotate, which will then cause the gear to roll along the pulley, causing the sleeve to slide along the surface of the rail frame, thereby driving the adjustment component to move as a whole, making it convenient to adjust the detection distance.

[0007] As an optimization, the adjusting component also includes a slide rail fixedly mounted on the front side of the mounting plate, the interior of the slide rail is rotatably connected to a threaded rod, a second pulley is fixedly mounted on the top of the threaded rod, a transmission belt is sleeved on the outer side of the second pulley, the interior of the slide rail is slidably connected to a slider, a connecting plate is fixedly mounted on the front side of the slider, and the sensor probe is fixedly mounted on the bottom of the connecting plate.

[0008] As an optimization, the pulley 2 is rotatably connected to the bottom side of the top plate, the pulley 1 is fixedly installed at the top center of the gear, and the transmission belt is sleeved on the outside of the pulley 1 and the pulley 2. The rotation of the gear will drive the pulley 1 to rotate, and then the pulley 2 will be driven to rotate through the transmission belt, thereby driving the threaded rod to rotate.

[0009] As an optimization, a threaded hole corresponding to the outer thread of the threaded rod is opened inside the slider. The slider is threadedly sleeved on the outside of the threaded rod through the threaded hole. The threaded rod rotates in the threaded hole inside the slider, which causes the slider to rise and fall. Therefore, the sensor probe will be driven to rise and fall synchronously through the connecting plate, thereby adjusting the detection depth of the sensor probe.

[0010] The beneficial effects of the utility model are:

[0011] 1. The ultrasonic Doppler open channel flow metering equipment can detect the water flow through the Parshall flume area through the ultrasonic probe, and then calculate the water flow velocity according to the Doppler time effect through the sensor probe. Then, the instantaneous flow can be converted according to the formula through the cross-sectional area at the sensor, so that the two flow detection methods can be combined to detect the water flow.

[0012] 2. The ultrasonic Doppler open channel flow metering device rolls along the rack plate through the gear, which will move the adjusting component as a whole, and then adjust the detection interval, which is convenient for detecting water flow in different areas. At the same time, the gear will drive the pulley one to rotate, and the transmission belt will drive the pulley two to rotate, which will make the slider slide along the inner wall of the slide rail, so the sensor probe will be driven up and down through the connecting plate, thereby automatically adjusting the detection depth instead of manually, facilitating the detection of water flow at different depths and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the adjustment structure of the utility model;

[0016] Figure 4 This is an exploded schematic diagram of the adjustment structure of the utility model.

[0017] In the figure: 1. Parshall slot; 2. bracket; 3. ultrasonic probe; 4. rail frame; 5. rack plate; 6. adjustment component; 7. sensor probe; 8. sleeve; 9. fixing plate; 10. mounting plate; 11. top plate; 12. mounting shell; 13. servo motor; 14. gear; 15. pulley 1; 16. slide rail; 17. threaded rod; 18. pulley 2; 19. transmission belt; 20. slider; 21. connecting plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 An ultrasonic Doppler open channel flow metering device comprises a Parshall flume 1 and a sensor probe 7. A bracket 2 is fixedly installed on the top side of one end of the water inlet of the Parshall flume 1, an ultrasonic probe 3 is fixedly installed on the top center of the bracket 2, rail frames 4 are fixedly installed on both sides of the bracket 2, a rack plate 5 is fixedly installed inside one side of the rail frame 4, an adjusting component 6 is arranged between the rail frames 4 on both sides, and the sensor probe 7 is arranged at the bottom of the adjusting component 6.

[0020] See also Figure 3-4 The adjusting component 6 includes a sliding sleeve 8 which is slidably mounted on the outer sides of the rail frames 4 on both sides, a fixing plate 9 is fixedly installed between the sliding sleeves 8 on both sides, a mounting plate 10 is fixedly installed in the middle of the fixing plate 9, a top plate 11 is fixedly installed on the top of the mounting plate 10, a mounting shell 12 is fixedly installed on the front side of the mounting plate 10, a servo motor 13 is fixedly installed inside the mounting shell 12, a gear 14 is fixedly installed at one end of the output shaft of the servo motor 13, the gear 14 is meshed and connected with the rack plate 5, and the gear 14 is driven to rotate by starting the servo motor 13, and then the gear 14 is rolled along the pulley 15, so that the sliding sleeve 8 slides along the surface of the rail frame 4, thereby driving the adjusting component 6 to move as a whole, so as to facilitate the adjustment of the detection distance;

[0021] See also Figure 3-4The adjusting component 6 also includes a slide rail 16 fixedly mounted on the front side of the mounting plate 10, a threaded rod 17 is rotatably connected inside the slide rail 16, a pulley 18 is fixedly mounted on the top of the threaded rod 17, the pulley 18 is rotatably connected to the bottom side of the top plate 11, a pulley 15 is fixedly mounted on the top center of the gear 14, a transmission belt 19 is sleeved on the outer side of the pulley 15 and the pulley 2 18, the rotation of the gear 14 will drive the pulley 15 to rotate, and then the pulley 2 18 will be driven to rotate through the transmission belt 19, thereby driving the threaded rod 17 to rotate;

[0022] See also Figure 3-4 The slide rail 16 is internally slidably connected with a slider 20, and a threaded hole corresponding to the outer thread of the threaded rod 17 is opened inside the slider 20. The slider 20 is threadedly sleeved on the outer side of the threaded rod 17 through the threaded hole. A connecting plate 21 is fixedly installed on the front side of the slider 20. The sensor probe 7 is fixedly installed at the bottom of the connecting plate 21. The threaded rod 17 rotates in the threaded hole inside the slider 20, which will cause the slider 20 to rise and fall. Therefore, the sensor probe 7 will be driven to rise and fall synchronously through the connecting plate 21, thereby adjusting the detection depth of the sensor probe 7.

[0023] When in use, water first flows through the Parshall flume 1, and the water flow rate can be detected by the ultrasonic probe 3. At the same time, the sensor probe 7 can be used to detect the flow rate from the bottom of the channel through the velocity-area method. Between the two probes, the system can calculate the water flow rate based on the Doppler time effect, and then calculate the instantaneous flow rate based on the cross-sectional area of ​​the area where the sensor is located according to the formula;

[0024] Among them, by starting the servo motor 13, the gear 14 will be driven to roll along the rack plate 5, and then the sleeve 8 will slide along the outside of the rail frame 4, so the adjusting component 6 will be driven to move as a whole, and then the detection interval will be adjusted, which is convenient for detecting the water flow in different areas. At the same time, the gear 14 will drive the pulley 15 to rotate, and the transmission belt 19 will drive the pulley 2 18 to rotate, so the threaded rod 17 will rotate inside the slider 20, and then the slider 20 will slide along the inner wall of the slide rail 16, so the sensor probe 7 will be driven up and down through the connecting plate 21, so that the detection depth of the sensor probe 7 can be adjusted.

[0025] In summary, the ultrasonic Doppler open channel flow metering equipment can detect the water flow rate flowing through the Parshall trough 1 area through the ultrasonic probe 3, and then calculate the water flow velocity according to the Doppler time effect through the sensor probe 7, and then convert the instantaneous flow rate according to the formula through the cross-sectional area at the sensor, so that the two flow detection methods can be combined to detect the water flow.

[0026] The gear 14 rolls along the rack plate 5, which will cause the adjusting component 6 to move as a whole, thereby adjusting the detection interval, which is convenient for detecting water flow in different areas. At the same time, the gear 14 will drive the pulley 15 to rotate, and the transmission belt 19 will drive the pulley 2 18 to rotate, which will cause the slider 20 to slide along the inner wall of the slide rail 16, so the sensor probe 7 will be driven up and down through the connecting plate 21, thereby automatically adjusting the detection depth instead of manually, facilitating the detection of water flow at different depths and improving safety.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The standard parts used in the utility model can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An ultrasonic Doppler open channel flow metering device, comprising a Parshall cell (1) and a sensor probe (7), characterized in that: A bracket (2) is fixedly mounted on the top side of one end of the water inlet of the Parshall trough (1), an ultrasonic probe (3) is fixedly mounted at the top center of the bracket (2), rail frames (4) are fixedly mounted on both sides of the bracket (2), a rack plate (5) is fixedly mounted inside one side of the rail frame (4), an adjustment component (6) is arranged between the two side rail frames (4), and the sensor probe (7) is arranged at the bottom of the adjustment component (6).

2. The ultrasonic Doppler open channel flow metering device according to claim 1, characterized in that: The adjusting component (6) comprises a sliding sleeve (8) which is slidably mounted on the outside of the rail frames (4) on both sides; a fixing plate (9) is fixedly mounted between the sliding sleeves (8) on both sides; a mounting plate (10) is fixedly mounted in the middle of the fixing plate (9); a top plate (11) is fixedly mounted on the top of the mounting plate (10); a mounting shell (12) is fixedly mounted on the front side of the mounting plate (10); a servo motor (13) is fixedly mounted inside the mounting shell (12); and a gear (14) is fixedly mounted on one end of an output shaft of the servo motor (13).

3. The ultrasonic Doppler open channel flow metering device according to claim 2 is characterized in that: The gear (14) and the rack plate (5) are meshingly connected.

4. The ultrasonic Doppler open channel flow metering device according to claim 3 is characterized in that: The adjusting component (6) further comprises a slide rail (16) fixedly mounted on a front side of the mounting plate (10); a threaded rod (17) is rotatably connected to the interior of the slide rail (16); a second pulley (18) is fixedly mounted on the top of the threaded rod (17); a transmission belt (19) is sleeved on the outer side of the second pulley (18); a slider (20) is slidably connected to the interior of the slide rail (16); a connecting plate (21) is fixedly mounted on a front side of the slider (20); and the sensor probe (7) is fixedly mounted on the bottom of the connecting plate (21).

5. The ultrasonic Doppler open channel flow metering device according to claim 4, characterized in that: The second pulley (18) is rotatably connected to the bottom side of the top plate (11), the top center of the gear (14) is fixedly mounted with a first pulley (15), and the transmission belt (19) is sleeved on the outside of the first pulley (15) and the second pulley (18).

6. The ultrasonic Doppler open channel flow metering device according to claim 4, characterized in that: A threaded hole corresponding to the outer thread of the threaded rod (17) is provided inside the slider (20), and the slider (20) is threadedly sleeved on the outer side of the threaded rod (17) through the threaded hole.

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