Doppler current meter sensor

Abstract

The utility model relates to the technical field of flow velocity meter sensors, and discloses a Doppler flow velocity meter sensor, which comprises a mounting plate, a sensor body is arranged above the mounting plate, a sliding sleeve is fixedly connected in the mounting plate, a handle is rotatably connected in the sliding sleeve, a worm is fixedly connected to the outer wall of the handle, and the worm is fixedly connected to the outer wall of the mounting plate. A worm gear is rotatably connected to the interior of the sliding sleeve, the worm gear is meshed with the worm, a connecting rod is fixedly connected to the interior of the worm gear, a push plate is fixedly connected to the bottom of the connecting rod, and the outer wall of the push plate is rotatably connected to the bottom of the sliding sleeve. According to the utility model, the problem that the installation complexity and the time cost are increased because the traditional flow velocity meter is difficult to realize convenient, rapid and stable installation is solved, and the purposes of reducing the complexity and the time cost required for installing the sensor, saving time and manpower resources and being beneficial to improving the overall operation efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of velocity meter sensors, in particular to a Doppler velocity meter sensor. Background Art

[0002] Doppler flowmeters are key fluid measurement devices that are able to monitor and accurately measure the flow rate of fluids in real time in a non-contact manner. The use of this sensor is crucial because dynamic monitoring of fluids is essential in many scientific and industrial applications. For example, in hydrology, Doppler flowmeters can help monitor the flow rate of rivers and streams to assess flood risks and water quality conditions; in meteorology, they are used to measure wind speed to predict weather changes; in the medical field, Doppler ultrasonic sensors are used to detect and image blood flow to diagnose cardiovascular diseases. In addition, Doppler flowmeters are also widely used in fields such as industrial process control, aerospace, and automotive engineering. In short, Doppler flowmeters play an important role in multiple fields because of their ability to provide accurate and reliable flow rate data.

[0003] Traditional Doppler flowmeter sensors emit sound waves into the fluid through a transmitter and use a receiver to capture the sound waves reflected from the fluid. When these sound waves propagate in the fluid, their frequency changes due to the flow of the fluid. This phenomenon is called the Doppler effect. After the sensor receives the reflected sound waves, it calculates the flow rate of the fluid by analyzing the change in frequency. This working principle enables the Doppler flowmeter to measure the velocity of the fluid non-invasively, and is suitable for various fluid dynamics research and industrial applications. When installing the sensor, you first need to use an appropriate clamp, bracket or other fixture to firmly fix the sensor in the installation position to prevent displacement in a fluid flow or vibration environment.

[0004] The internal sensor design of traditional flow meters requires precise position and positioning to ensure the accuracy and stability of the measurement. Traditional flow meters are difficult to install conveniently, quickly and stably, which increases the complexity and time cost of installation. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a Doppler flowmeter sensor, which aims to improve the problem that traditional flowmeters are difficult to install conveniently, quickly and stably, thereby increasing the installation complexity and time cost.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a Doppler flowmeter sensor, comprising a mounting plate (1), a sensor body (2) being arranged above the mounting plate (1), a sliding sleeve (4) being fixedly connected inside the mounting plate (1), a handle (5) being rotatably connected inside the sliding sleeve (4), a worm (6) being fixedly connected to the outer wall of the handle (5), a worm wheel (7) being rotatably connected inside the sliding sleeve (4), the worm wheel (7) being meshed with the worm (6), a connecting rod (8) being fixedly connected inside the worm wheel (7), and the A push plate (9) is fixedly connected to the bottom of the connecting rod (8), and the outer wall of the push plate (9) is rotatably connected to the bottom of the sliding sleeve (4). The outer wall of the push plate (9) is slidably connected to a clamping block (10), and the outer wall of the clamping block (10) is slidably connected to the inside of the sliding sleeve (4). The clamping block (10) and the inside of the sliding sleeve (4) are both rotatably connected to a rotating shaft (11). The outer wall of the rotating shaft (11) is provided with a pullback component, which is used to pull the clamping block (10) back to the inside of the sliding sleeve (4). The lower surface of the mounting plate (1) is fixedly connected to a positioning block (3).

[0007] Furthermore, the pullback assembly comprises a telescopic rod (12), both ends of which are fixedly connected to the outer wall of the rotating shaft (11), the outer wall of the telescopic rod (12) is sleeved with a spring (13), and both ends of the spring (13) are fixedly connected to the outer wall of the rotating shaft (11).

[0008] Furthermore, a transmitter (14) is fixedly connected to the outer wall of the mounting plate (1), a receiver (22) is fixedly connected to the outer wall of the mounting plate (1), and ultrasonic probes (15) are arranged inside the transmitter (14) and the receiver (22).

[0009] Furthermore, a fixing bolt (16) is provided inside the sensor body (2), and the bottom of the fixing bolt (16) is threadedly connected to the inside of the mounting plate (1).

[0010] Furthermore, a gasket (17) is sleeved on the outer wall of the fixing bolt (16), and the gasket (17) is fitted on the outer wall of the sensor body (2).

[0011] Furthermore, a sealing strip (18) is slidably connected to the interior of the mounting plate (1), and an outer wall of the sealing strip (18) is slidably connected to the interior of the sensor body (2).

[0012] Furthermore, the outer wall of the sealing strip (18) is fixedly connected to a limit plate (19), the outer wall of the limit plate (19) is slidably connected to the inside of the mounting plate (1), and the inside of the sealing strip (18) is fixedly connected to a telescopic rod 2 (20).

[0013] Furthermore, a second spring (21) is sleeved on the outer wall of the second telescopic rod (20), one end of the second spring (21) is fixedly connected to the inside of the sealing strip (18), and the other end of the second spring (21) is fixedly connected to the inside of the mounting plate (1).

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the mounting plate is first positioned by the positioning block and the sliding sleeve, and then the driving handle drives the worm to rotate, and then cooperates with the worm wheel, the connecting rod, the push plate, the rotating shaft and the spring to drive the clamping block to slide inside the sliding sleeve and the flow meter, so as to realize the disassembly and assembly of the mounting plate and the sensor body, and solves the problem that the traditional flow meter is difficult to achieve convenient, fast and stable installation, thereby increasing the installation complexity and time cost, and reduces the complexity and time cost required for installing the sensor, saves time and human resources, and is conducive to improving the overall operating efficiency.

[0016] 2. In the utility model, firstly, the speed is measured by the information processing unit inside the sensor body in cooperation with the transmitter, receiver and ultrasonic probe, then the fixing bolts and gaskets are used to facilitate the maintenance of the inside of the sensor body, and finally the sealing strip, limit plate and spring are used to achieve efficient sealing, thereby achieving convenient maintenance and efficient sealing, simplifying maintenance, improving reliability, reducing the risk of failure, extending the service life, and improving measurement accuracy and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of a Doppler flowmeter sensor proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a sliding sleeve of a Doppler flowmeter sensor proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the worm gear structure of a Doppler flowmeter sensor proposed by the utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the internal structure of a mounting plate of a Doppler flowmeter sensor proposed by the utility model;

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0023] Legend:

[0024] 1. Mounting plate; 2. Sensor body; 3. Positioning block; 4. Sleeve; 5. Handle; 6. Worm; 7. Worm wheel; 8. Connecting rod; 9. Push plate; 10. Block; 11. Rotating shaft; 12. Telescopic rod 1; 13. Spring 1; 14. Transmitter; 15. Ultrasonic probe; 16. Fixing bolt; 17. Gasket; 18. Sealing strip; 19. Limit plate; 20. Telescopic rod 2; 21. Spring 2; 22. Receiver. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1 - Figure 4 The utility model provides an embodiment: a Doppler flowmeter sensor, comprising a mounting plate 1, a sensor body 2 is arranged above the mounting plate 1, a sliding sleeve 4 is fixedly connected inside the mounting plate 1, a handle 5 is rotatably connected inside the sliding sleeve 4, a worm 6 is fixedly connected to the outer wall of the handle 5, a worm wheel 7 is rotatably connected inside the sliding sleeve 4, the worm wheel 7 is meshed with the worm 6, a connecting rod 8 is fixedly connected inside the worm wheel 7, a push plate 9 is fixedly connected to the bottom of the connecting rod 8, the outer wall of the push plate 9 is rotatably connected to the bottom of the sliding sleeve 4, and the outer wall of the push plate 9 A block 10 is slidably connected, and the outer wall of the block 10 is slidably connected to the inside of the sliding sleeve 4. The block 10 and the inside of the sliding sleeve 4 are both rotatably connected to a rotating shaft 11. A pullback component is provided on the outer wall of the rotating shaft 11. The pullback component is used to pull the block 10 back to the inside of the sliding sleeve 4. A positioning block 3 is fixedly connected to the lower surface of the mounting plate 1. The pullback component includes a telescopic rod 12. Both ends of the telescopic rod 12 are fixedly connected to the outer wall of the rotating shaft 11. A spring 13 is provided on the outer wall of the telescopic rod 12. Both ends of the spring 13 are fixedly connected to the outer wall of the rotating shaft 11.

[0027] Specifically, firstly, the mounting plate 1 is placed inside the velocity meter through the positioning block 3, and the sleeve 4 is slid into the inside of the mounting plate 1 to achieve positioning, and then the handle 5 is driven to drive the worm 6 to rotate inside the sleeve 4. Due to the meshing of the worm 6 and the worm wheel 7, the worm wheel 7 rotates with the rotation of the worm 6, and then the push plate 9 is driven to rotate at the bottom of the sleeve 4 through the connecting rod 8, and then the four protrusions on the outer wall of the push plate 9 push the block 10 to slide inside the sleeve 4 and the velocity meter, and at the same time, the spring 13 is driven to stretch through the rotating shaft 11 to achieve the fixation of the sensor body 2 above the mounting plate 1. When disassembling, it is only necessary to rotate the handle 5 in the opposite direction to drive the push plate 9 back to its original position. At this time, the spring 13 is no longer subjected to force and rebounds, thereby driving the block 10 to return to the inside of the sleeve 4, and then the sensor body 2 can be removed, achieving the effect of convenient disassembly and assembly.

[0028] Reference Figure 1 , Figure 5 and Figure 6 The outer wall of the mounting plate 1 is fixedly connected with a transmitter 14, the outer wall of the mounting plate 1 is fixedly connected with a receiver 22, the transmitter 14 and the receiver 22 are both provided with an ultrasonic probe 15, the sensor body 2 is provided with a fixing bolt 16, the bottom of the fixing bolt 16 is threadedly connected to the inside of the mounting plate 1, the outer wall of the fixing bolt 16 is sleeved with a gasket 17, the gasket 17 is attached to the outer wall of the sensor body 2, the inside of the mounting plate 1 is slidably connected with a sealing strip 18, the outer wall of the sealing strip 18 is slidably connected to the inside of the sensor body 2, the outer wall of the sealing strip 18 is fixedly connected to a limit plate 19, the outer wall of the limit plate 19 is slidably connected to the inside of the mounting plate 1, the inside of the sealing strip 18 is fixedly connected with a telescopic rod 20, the outer wall of the telescopic rod 20 is sleeved with a spring 21, one end of the spring 21 is fixedly connected to the inside of the sealing strip 18, and the other end of the spring 21 is fixedly connected to the inside of the mounting plate 1;

[0029] Specifically, when the sensor body 2 is used, the ultrasonic signal is first transmitted to the water flow through the transmitter 14 in cooperation with the ultrasonic probe 15. Then, when encountering scatterers such as particles or cells in the fluid, the ultrasonic signal will be reflected back. At this time, the signal reflected back from the scatterers in the fluid is captured by the receiver 22 and finally transmitted to the signal processing unit inside the sensor body 2. The signal processing unit will analyze the frequency change of the reflected signal and calculate the speed of the scatterers to achieve the speed measurement effect. Then, the outer shell of the sensor body 2 can be removed by fixing the bolts 16 and the gasket 17 to facilitate the internal inspection. During installation, first align the outer wall of the sensor body 2 with the preset groove inside the mounting plate 1, so that the sealing strip 18 is moved to the inside of the sensor body 2, and at the same time, the sealing strip 18 is tightly fitted with the sensor body 2 with the push of the spring 21 to achieve efficient sealing.

[0030] Working principle: When the Doppler flowmeter sensor is needed, first use the positioning block 3 to place the mounting plate 1 in the flowmeter, then move the sliding sleeve 4 to the mounting plate 1 for positioning, operate the driving handle 5 to make the worm 6 rotate in the sliding sleeve 4, due to the meshing action of the worm 6 and the worm wheel 7, the worm wheel 7 rotates accordingly, and the push plate 9 is pushed to rotate at the bottom of the sliding sleeve 4 through the connecting rod 8, and then the four protrusions on the outer wall of the push plate 9 push the block 10 to slide in the sliding sleeve 4 and the flowmeter, and at the same time, the rotating shaft 11 stretches the spring 13 to fix the sensor body 2. When disassembling, turn the handle 5 in the opposite direction, the push plate 9 is reset, the spring 13 rebounds, and the block 10 returns to the sliding sleeve 4, which is convenient for removing the sensor body 2 and realizing convenient disassembly and assembly;

[0031] In addition, when the sensor body 2 is in use, the transmitter 14 cooperates with the ultrasonic probe 15 to transmit an ultrasonic signal to the water flow. The signal is reflected after encountering particles or cells in the fluid. The receiver 22 captures the reflected signal and transmits it to the signal processing unit of the sensor body 2. The unit analyzes the frequency change, calculates the speed of the scatterer, and realizes speed measurement. During maintenance, the outer shell of the sensor body 2 can be removed by fixing the bolts 16 and the gasket 17. During installation, the outer wall of the sensor body 2 is aligned with the preset groove of the mounting plate 1. The sealing strip 18 is pushed by the spring 21 to fit tightly with the sensor body 2 to ensure efficient sealing.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Doppler flowmeter sensor, comprising a mounting plate (1), characterized in that: A sensor body (2) is arranged above the mounting plate (1); a sliding sleeve (4) is fixedly connected inside the mounting plate (1); a handle (5) is rotatably connected inside the sliding sleeve (4); a worm (6) is fixedly connected to the outer wall of the handle (5); a worm wheel (7) is rotatably connected inside the sliding sleeve (4); the worm wheel (7) meshes with the worm (6); a connecting rod (8) is fixedly connected inside the worm wheel (7); a push plate (9) is fixedly connected to the bottom of the connecting rod (8); The outer wall of the push plate (9) is rotatably connected to the bottom of the sliding sleeve (4), the outer wall of the push plate (9) is slidably connected to a clamping block (10), the outer wall of the clamping block (10) is slidably connected to the inside of the sliding sleeve (4), the clamping block (10) and the inside of the sliding sleeve (4) are both rotatably connected to a rotating shaft (11), the outer wall of the rotating shaft (11) is provided with a pullback component, the pullback component is used to pull the clamping block (10) back to the inside of the sliding sleeve (4), and the lower surface of the mounting plate (1) is fixedly connected to a positioning block (3).

2. A Doppler flowmeter sensor according to claim 1, characterized in that: The pull-back assembly comprises a telescopic rod (12), both ends of which are fixedly connected to the outer wall of the rotating shaft (11), the outer wall of the telescopic rod (12) is sleeved with a spring (13), and both ends of the spring (13) are fixedly connected to the outer wall of the rotating shaft (11).

3. A Doppler flowmeter sensor according to claim 1, characterized in that: A transmitter (14) is fixedly connected to the outer wall of the mounting plate (1), a receiver (22) is fixedly connected to the outer wall of the mounting plate (1), and ultrasonic probes (15) are arranged inside the transmitter (14) and the receiver (22).

4. A Doppler flowmeter sensor according to claim 3, characterized in that: A fixing bolt (16) is arranged inside the sensor body (2), and the bottom of the fixing bolt (16) is threadedly connected to the inside of the mounting plate (1).

5. A Doppler flowmeter sensor according to claim 4, characterized in that: The outer wall of the fixing bolt (16) is sleeved with a gasket (17), and the gasket (17) is fitted on the outer wall of the sensor body (2).

6. A Doppler flowmeter sensor according to claim 5, characterized in that: A sealing strip (18) is slidably connected to the interior of the mounting plate (1), and an outer wall of the sealing strip (18) is slidably connected to the interior of the sensor body (2).

7. A Doppler flowmeter sensor according to claim 6, characterized in that: The outer wall of the sealing strip (18) is fixedly connected to a limiting plate (19), the outer wall of the limiting plate (19) is slidably connected to the inside of the mounting plate (1), and the inside of the sealing strip (18) is fixedly connected to a second telescopic rod (20).

8. A Doppler flowmeter sensor according to claim 7, characterized in that: The outer wall of the second telescopic rod (20) is sleeved with a second spring (21), one end of the second spring (21) is fixedly connected to the inside of the sealing strip (18), and the other end of the second spring (21) is fixedly connected to the inside of the mounting plate (1).

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