A vortex flow meter with improved sensor resonant frequency

Abstract

This invention belongs to the field of vortex flowmeter technology, specifically a vortex flowmeter with improved sensor resonant frequency. It includes a pipe with a first mounting groove at the top. A limiting block is mounted on the top of a sealing ring, and a shielding rod is fixedly connected inside the limiting block. A connecting pipe is fixedly connected inside the shielding rod. A guide groove is provided at the end of the sensor facing the water flow input, and a through hole is provided at the end of the sensor facing away from the water flow input. A display screen is fixedly connected to the top of the connecting pipe. By setting the guide groove and through hole, when the water flow contacts the sensor, the guide groove guides the water flow outside the sensor from the middle to both sides, thereby reducing the resistance of the water flow to the sensor and improving the sensor's resonant frequency. The limiting block, sealing ring, rotating ring, and limiting bolt enhance the stability of the shielding rod connection.

Description

Technical Field

[0001] This utility model belongs to the field of vortex flow meter technology, specifically a vortex flow meter with improved sensor resonant frequency. Background Technology

[0002] A vortex flow meter is a high-precision, highly reliable, and widely applicable flow meter. Based on the von Kármán vortex street theory, it utilizes the natural vibration principle of fluids and employs piezoelectric crystals or differential capacitors as the measuring components. To improve the resonant frequency of the internal sensor of the vortex flow meter, a sensor made of single-crystal silicon can be used to reduce the influence of temperature on the frequency.

[0003] Existing vortex flow meters use sensors to measure the flow velocity of water inside the pipe. However, the sensors are easily affected by the resistance of the water flow inside the pipe, which reduces the resonant frequency of the sensor and thus affects the normal operation of the vortex flow meter. Summary of the Invention

[0004] The purpose of this invention is to provide a vortex flowmeter with an improved sensor resonant frequency to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A vortex flow meter with improved sensor resonant frequency is provided, comprising a pipe. A first mounting groove is formed at the top of the pipe, and a sealing ring is installed inside the first mounting groove. A limiting block is installed at the top of the sealing ring, and a shielding rod is fixedly connected inside the limiting block. A connecting pipe is fixedly connected inside the shielding rod, and a sensor is fixedly connected to the bottom of the connecting pipe. A flow guide groove is formed at the end of the sensor facing the water flow input, and a through hole is formed at the end of the sensor facing away from the water flow input. A display screen is fixedly connected to the top of the connecting pipe. In use, when the water flow contacts the sensor, the flow guide groove guides the water flow outside the sensor from the middle to both sides, thereby reducing the resistance of the water flow to the sensor. Furthermore, the through hole further reduces the weight of the sensor, which is beneficial for improving the sensor's resonant frequency.

[0006] Optionally, the number of flow guide channels and through holes are multiple, and they are distributed vertically. By using multiple sets of flow guide channels and multiple through holes, the flow resistance experienced by the sensor can be greatly reduced.

[0007] Optionally, the limiting block is semi-annular and slidably connected to the inner wall of the first mounting groove. Second mounting grooves are provided at both the front and rear ends of the limiting block, and a fixing post is fixedly connected to the inner wall of each second mounting groove. The semi-annular limiting block can better fit into the interior of the second mounting groove, thereby tightly pressing the sealing ring and enhancing its sealing performance.

[0008] Optionally, a rotating ring is rotatably connected to the outside of the fixed column. A circular hole is formed at the end of the rotating ring furthest from the fixed column, and a limiting bolt is movably connected inside the circular hole. Two rotating rings are provided, located on either side of the limiting block. The limiting bolts secure the two rotating rings, which enhances the stability of the shielding rod connection and allows the shielding rod to effectively isolate external interference, preventing it from affecting the sensor.

[0009] Optionally, the pipe is externally fixedly connected with flanges, and there are two flanges, with the two flanges located at opposite ends of the pipe. The flanges connect to the pipe, facilitating the connection between the pipe and the inlet water pipe.

[0010] Optionally, a vortex generator is installed inside the pipe, and a connecting block is provided at the top of the pipe. The connecting block is fixedly connected to the vortex generator by a limiting screw. The vortex generator can better generate vortices, facilitating sensor measurement. The limiting screw fixes the vortex generator inside the pipe. During installation, a shielding rod is used to abut the top of the limiting block against the sealing ring, achieving engagement between the limiting block and the pipe. Limiting bolts are then used to fix the two rotating rings, enhancing the stability of the shielding rod connection.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model is provided with a flow guide groove and a through hole. When in use, when the water flow comes into contact with the sensor, the flow guide groove guides the water flow outside the sensor from the middle to both sides, thereby reducing the resistance of the water flow to the sensor. In addition, the through hole further reduces the weight of the sensor. When the sensor structure is the same, the smaller the weight of the vibrating part, the higher the resonance frequency, which is beneficial to improving the resonance frequency of the sensor.

[0013] 2. This utility model is equipped with a limiting block, a sealing ring, a rotating ring, and a limiting bolt. During installation, the limiting block is attached to the top of the sealing ring using the shielding rod to achieve the engagement of the limiting block with the pipeline. Then, the two rotating rings are fixed using the limiting bolt, which helps to enhance the stability of the shielding rod connection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This utility model Figure 3 A magnified structural diagram at point B in the middle.

[0019] In the diagram: 1. Pipe; 2. Flange; 3. Connecting block; 4. Vortex generator; 5. First mounting groove; 6. Sealing ring; 7. Limiting block; 8. Shielding rod; 9. Connecting pipe; 10. Display screen; 11. Sensor; 12. Flow guide groove; 13. Through hole; 14. Second mounting groove; 15. Fixing column; 16. Rotating ring; 17. Limiting bolt. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Reference Figure 1-4 A vortex flow meter with improved sensor resonant frequency includes a pipe 1. A first mounting groove 5 is formed at the top of the pipe 1. A sealing ring 6 is installed inside the first mounting groove 5. A limiting block 7 is installed at the top of the sealing ring 6. A shielding rod 8 is fixedly connected inside the limiting block 7. A connecting pipe 9 is fixedly connected inside the shielding rod 8. A sensor 11 is fixedly connected to the bottom of the connecting pipe 9. A guide groove 12 is formed at the end of the sensor 11 facing the water flow input, and a through hole 13 is formed at the end of the sensor 11 facing away from the water flow input. A display screen 10 is fixedly connected to the top of the connecting pipe 9. In use, when the water flow comes into contact with the sensor 11, the guide groove 12 guides the water flow outside the sensor 11 from the middle to both sides, thereby reducing the resistance of the water flow to the sensor 11. Furthermore, the through hole 13 further reduces the weight of the sensor 11. When the structure of the sensor 11 is the same, the smaller the weight of the vibrating part, the higher the resonant frequency, which is beneficial for improving the resonant frequency of the sensor 11.

[0022] There are multiple flow guide channels 12 and through holes 13, which are distributed vertically. By using multiple sets of flow guide channels 12 and multiple through holes 13, the flow resistance experienced by the sensor 11 can be greatly reduced.

[0023] The limiting block 7 is semi-annular and slidably connected to the inner wall of the first mounting groove 5. Second mounting grooves 14 are provided at both the front and rear ends of the limiting block 7, and a fixing post 15 is fixedly connected to the inner wall of the second mounting groove 14. The semi-annular limiting block 7 can better fit into the interior of the second mounting groove 14, thereby tightly pressing the sealing ring 6 and enhancing its sealing performance.

[0024] A rotating ring 16 is rotatably connected to the outside of the fixed column 15. A circular hole is opened at the end of the rotating ring 16 away from the fixed column 15, and a limit bolt 17 is movably connected inside the circular hole. There are two rotating rings 16, located on both sides of the limit block 7. The two rotating rings 16 are fixed by the limit bolt 17, which helps to enhance the stability of the connection of the shielding rod 8, and the shielding rod 8 can effectively isolate external interference and avoid affecting the sensor 11.

[0025] The pipe 1 is externally fixedly connected with flanges 2. There are two flanges 2, and the two flanges 2 are located at opposite ends of the pipe 1. The flanges 2 are connected to the pipe 1 to facilitate the connection between the pipe 1 and the water inlet pipe.

[0026] A vortex generator 4 is installed inside the pipe 1, and a connecting block 3 is provided at the top of the pipe 1. The connecting block 3 is fixedly connected to the vortex generator 4 by a limiting screw. The vortex generator 4 can better generate vortices, which is convenient for the sensor 11 to measure, and the limiting screw is used to fix the vortex generator 4 inside the pipe 1.

[0027] Working principle: When in use, water flows through the vortex generator 4 to generate a vortex. When the vortex water flows into contact with the sensor 11, the guide channel 12 guides the water flow outside the sensor 11 from the middle to both sides, thereby reducing the resistance of the water flow to the sensor 11. In addition, the through hole 13 further reduces the weight of the sensor 11. When the structure of the sensor 11 is the same, the smaller the weight of the vibrating part, the higher the resonance frequency, which is beneficial to improving the resonance frequency of the sensor 11. The measurement result is connected from the sensor 11 to the display screen 10 through the internal connecting wire of the connecting pipe 9.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vortex flow meter with improved sensor resonant frequency, comprising a pipe (1), characterized in that: The top of the pipe (1) is provided with a first mounting groove (5), a sealing ring (6) is installed inside the first mounting groove (5), a limit block (7) is installed on the top of the sealing ring (6), a shielding rod (8) is fixedly connected inside the limit block (7), a connecting pipe (9) is fixedly connected inside the shielding rod (8), a sensor (11) is fixedly connected to the bottom of the connecting pipe (9), a guide groove (12) is provided at the end of the sensor (11) facing the water flow input, a through hole (13) is provided at the end of the sensor (11) facing away from the water flow input, and a display screen (10) is fixedly connected to the top of the connecting pipe (9).

2. The vortex flowmeter with improved sensor resonant frequency as described in claim 1, characterized in that: The number of the guide grooves (12) and the through holes (13) are both multiple and are distributed vertically.

3. The vortex flowmeter with improved sensor resonant frequency as described in claim 1, characterized in that: The limiting block (7) is semi-circular and is slidably connected to the inner wall of the first mounting groove (5). The front and rear ends of the limiting block (7) are provided with second mounting grooves (14), and the inner wall of the second mounting groove (14) is fixedly connected with a fixing column (15).

4. The vortex flowmeter with improved sensor resonant frequency as described in claim 3, characterized in that: The fixed column (15) is rotatably connected to a rotating ring (16). The rotating ring (16) has a circular hole at one end away from the fixed column (15), and a limit bolt (17) is movably connected inside the circular hole.

5. The vortex flowmeter with improved sensor resonant frequency as described in claim 1, characterized in that: The pipe (1) is externally fixedly connected to a flange (2), and there are two flanges (2), which are located at both ends of the pipe (1).

6. The vortex flowmeter with improved sensor resonant frequency as described in claim 5, characterized in that: The pipe (1) is equipped with a vortex generator (4) inside, and a connecting block (3) is provided on the top of the pipe (1), and the connecting block (3) is fixedly connected to the vortex generator (4) by a limiting screw.

Images