High-precision double-sensor precession flowmeter

Abstract

The utility model provides a high-precision double-sensor precession flow meter, which relates to the technical field of flow meters and comprises a shell, a first piezoelectric sensor and a second piezoelectric sensor are respectively arranged in the shell, a first flange is arranged at one end of the shell, a mounting groove is formed in the surface of the first flange, and a fixing block is arranged in the mounting groove. A filter screen is arranged in the mounting groove, a first piezoelectric sensor and a second piezoelectric sensor are adopted, the first piezoelectric sensor and the second piezoelectric sensor can comprehensively monitor precession motion of fluid vortex from different positions, and the double-sensor layout can capture richer vortex information. According to the method, parameters including frequencies, amplitudes, phases and the like of vortexes at different cross section positions of a pipeline are included, data collected by the two sensors are comprehensively analyzed and compared, measurement errors caused by factors such as non-uniform local flow fields and vortex distribution differences can be effectively reduced, and therefore the precision and reliability of flow measurement are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, and in particular to a high-precision dual-sensor vortex flow meter. Background Technology

[0002] According to Chinese Patent No. CN211373721U, a vortex flowmeter with precession flow is disclosed, relating to the field of electronic equipment. This vortex flowmeter includes a flowmeter body with a signal input terminal, a signal output terminal, and a power supply terminal. The flowmeter body is connected to a connecting pipe, which is equipped with a threaded tube. An air release valve is installed on the threaded tube, and a measuring tube is connected to the end of the threaded tube. Flanges are provided at both ends of the measuring tube, and a vortex generator is installed inside the measuring tube. The vortex flowmeter features an air release valve at the connection point between the sensor mounting location and the connecting pipe of the converter, allowing for periodic air release to eliminate air resistance within the connecting pipe and the threaded tube.

[0003] The above-mentioned documents and existing technologies have the following problems: Most existing vortex flow meters currently use an internal piezoelectric sensor for detection. Relying on only one sensor, it can only obtain vortex information at a local location in the pipe, and cannot fully understand the vortex situation in the entire pipe cross section. The accuracy is low, and it is not convenient to filter the fluid. It is easy to clog the flow meter and reduce the service life of the flow meter. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision dual-sensor vortex flowmeter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision dual-sensor vortex flow meter, comprising a housing, wherein a first piezoelectric sensor and a second piezoelectric sensor are respectively provided inside the housing, a first flange is provided at one end of the housing, a mounting groove is provided on the surface of the first flange, a fixing block is provided inside the mounting groove, a filter screen is provided inside the mounting groove, and a fixing groove is provided on the outer wall of the filter screen.

[0006] Preferably, the surface of the housing is provided with a flow meter totalizer, and one end of the housing is provided with a second flange.

[0007] Preferably, the housing is equipped with a vortex generator and an anti-vortex device.

[0008] Preferably, the first piezoelectric sensor and the second piezoelectric sensor are electrically connected to the flow meter totalizer, and the first piezoelectric sensor and the second piezoelectric sensor are respectively disposed at both ends of the inner wall of the housing.

[0009] Preferably, the fixing groove is L-shaped, and multiple fixing grooves are arranged in a circumferential array.

[0010] Preferably, multiple fixing blocks are arranged in a circumferential array, and the shape and position of the fixing blocks are adapted to the fixing groove.

[0011] Preferably, the filter screen is disposed on one side of the vortex generator, and the shape and position of the filter screen correspond to the mounting groove.

[0012] Beneficial effects

[0013] In this invention, a first piezoelectric sensor and a second piezoelectric sensor are used, which are respectively disposed at both ends of the inner wall of the housing. This allows for comprehensive monitoring of the swirling motion of fluid vortices from different positions. Compared with traditional swirling flow meters that use only one sensor, this dual-sensor layout can capture richer vortex information, including parameters such as the frequency, amplitude, and phase of the vortex at different cross-sectional positions in the pipe. By comprehensively analyzing and comparing the data collected by the two sensors, measurement errors caused by factors such as uneven local flow fields and differences in vortex distribution can be effectively reduced, thereby significantly improving the accuracy and reliability of flow measurement.

[0014] In this invention, a filter screen is used. The filter screen is inserted into the mounting groove along the fixing block through the fixing groove. Then, the filter screen is rotated, causing the fixing groove to rotate along the fixing block, so that the fixing block is locked in the fixing groove. When disassembly, only the filter screen needs to be rotated, thus realizing the quick installation and disassembly of the filter screen. When it is necessary to clean or replace the filter screen, the operator does not need to use complicated tools or spend a lot of time disassembling the entire flow meter or related pipeline components. The whole process is quick and simple, effectively filtering fluid impurities and preventing the impact on measurement accuracy and damage to components. Attached Figure Description

[0015] Figure 1 This is an axonometric view of the present invention;

[0016] Figure 2 This is a perspective view of the present utility model;

[0017] Figure 3 This is a front cross-sectional view of the present invention;

[0018] Figure 4 This utility model Figure 3 Enlarged view of A in the middle;

[0019] Figure 5 This is an exploded view of the filter screen of this utility model.

[0020] Legend:

[0021] 1. Housing; 2. Flow meter totalizer; 3. First flange; 4. Second flange; 5. Filter screen; 6. First piezoelectric sensor; 7. Second piezoelectric sensor; 8. Vortex generator; 9. Devortex generator; 10. Fixing block; 11. Mounting groove; 12. Fixing groove. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0025] Reference Figure 1-5 A high-precision dual-sensor vortex flow meter includes a housing 1, which serves as the main structure of the flow meter, providing protection and support, housing all internal components, ensuring their normal operation, and preventing external interference. Inside the housing 1 are a first piezoelectric sensor 6 and a second piezoelectric sensor 7, respectively. The first and second piezoelectric sensors 6 and 7 are electrically connected to a flow meter totalizer 2. The first and second piezoelectric sensors 6 and 7 are respectively located at both ends of the inner wall of the housing 1. The first piezoelectric sensor 6 monitors the vortex advance motion of the fluid, and the flow vortex... Mechanical vibration is converted into electrical signals, which are analyzed and processed by the flow meter totalizer 2. The second piezoelectric sensor 7 works in conjunction with the first piezoelectric sensor 6 to monitor fluid vortices from another location, providing additional vortex information and increasing the accuracy and reliability of the measurement. A vortex generator 8 is installed inside the housing 1 to generate fluid vortices, so that the fluid forms stable vortices as it passes through the flow meter, which are then monitored by the sensor. A devortex deflector 9 is installed inside the housing 1 to eliminate fluid vortices before the fluid leaves the flow meter, thereby reducing the impact on subsequent pipelines or equipment.

[0026] One end of the housing 1 is provided with a first flange 3, which connects the flow meter to other pipes or equipment, ensuring that the fluid can smoothly enter and leave the flow meter. The surface of the first flange 3 has a mounting groove 11, providing space for installing the filter screen 5, ensuring that the filter screen 5 can be correctly installed and fixed within the first flange 3. The mounting groove 11 contains multiple fixing blocks 10 arranged in a circumferential array, and the shape and position of the fixing blocks 10 are adapted to the fixing groove 12. The filter screen 5 is fixed by the fixing blocks 10, cooperating with the fixing groove 12 on the filter screen 5 to ensure that the filter screen 5 is firmly installed within the mounting groove 11. The filter screen 5 is located inside the mounting groove 11, positioned on one side of the vortex generator 8. The shape and position of the filter screen 5 correspond to the mounting groove 11, filtering impurities in the fluid and preventing impurities from entering. If the fluid enters the flow meter, it may affect the measurement accuracy or damage the sensor. The outer wall of the filter screen 5 is provided with a fixing groove 12. The fixing groove 12 is L-shaped and multiple fixing grooves 12 are arranged in a circumferential array. The fixing groove 12 cooperates with the fixing block 10 to fix the filter screen 5. Its L-shaped shape makes it easy to insert the filter screen 5 into the installation groove 11 and rotate and fix the filter screen 5. At the same time, the first flange 3 cooperates with other flanges of the pipeline to fix the filter screen 5 against each other. The surface of the housing 1 is provided with a flow meter totalizer 2. The flow meter totalizer 2 receives and processes the signals from the first piezoelectric sensor 6 and the second piezoelectric sensor 7, calculates and displays the fluid flow rate. One end of the housing 1 is provided with a second flange 4. The second flange 4 is similar to the first flange 3 and is used to connect the flow meter with other pipelines or equipment to ensure the integrity of the fluid system and provide necessary sealing.

[0027] This high-precision dual-sensor vortex flowmeter has a housing 1 as its main body. Inside, a first piezoelectric sensor 6 and a second piezoelectric sensor 7 are located at opposite ends of the inner wall and are electrically connected to the flowmeter totalizer 2. A vortex generator 8 generates fluid vortices, and a devortex depletor 9 eliminates them. In use, fluid enters through the first flange 3. The fixing block 10 in the mounting groove 11 on the first flange 3 engages with the fixing groove 12 of the filter screen 5. The filter screen 5 is inserted into the mounting groove 11 along the fixing block 10 and then rotated, causing the fixing block 10 to lock into the fixing groove 12, thus achieving rapid installation and fixation of the filter screen 5. It can filter fluid impurities to prevent affecting measurement accuracy and damaging components. Fluid vortices are monitored from different positions by the first piezoelectric sensor 6 and the second piezoelectric sensor 7, which convert mechanical vibrations into electrical signals and transmit them to the flow meter totalizer 2 for analysis and processing. The two work together to improve measurement accuracy and reliability. After the fluid passes through the devortex 9 to eliminate vortices, it flows out from the second flange 4, completing the entire flow measurement process. When it is necessary to clean or replace the filter screen 5, it can be quickly disassembled by simply rotating the filter screen 5. There is no need for complicated tools and long-term disassembly of the entire flow meter or related pipeline components, making the operation simple and efficient. Specific Implementation Example 2:

[0029] A high-precision dual-sensor vortex flow meter, based on the basic structure in Specific Embodiment 1, further discloses the following: a temperature sensor and a pressure sensor are integrated inside the housing 1. The pressure sensor can monitor the pressure inside the flow meter and the connected pipeline, while the temperature sensor monitors the fluid temperature to help prevent the flow meter from being damaged by high temperature, ensuring product quality and production safety.

[0030] In summary:

[0031] 1. A first piezoelectric sensor 6 and a second piezoelectric sensor 7 are adopted. The first piezoelectric sensor 6 and the second piezoelectric sensor 7 are respectively set at both ends of the inner wall of the housing 1. They can comprehensively monitor the swirling motion of fluid vortices from different positions. Compared with the traditional swirling flow meter that only uses one sensor, this dual-sensor layout can capture richer vortex information, including parameters such as the frequency, amplitude and phase of the vortex at different cross-sectional positions of the pipe. By comprehensively analyzing and comparing the data collected by the two sensors, the measurement error caused by factors such as uneven local flow field and differences in vortex distribution can be effectively reduced, thereby significantly improving the accuracy and reliability of flow measurement.

[0032] 2. Using filter screen 5, insert filter screen 5 into the mounting groove 11 along the fixing block 10 through the fixing groove 12. Then rotate filter screen 5 to make the fixing groove 12 rotate along the fixing block 10, so that the fixing block 10 is locked in the fixing groove 12. When disassembling, simply rotate filter screen 5 to achieve quick installation and disassembly of filter screen 5. When it is necessary to clean or replace filter screen 5, the operator does not need to use complicated tools and spend a lot of time disassembling the entire flow meter or related pipeline components. The whole process is quick and simple, effectively filtering fluid impurities and preventing the impact on measurement accuracy and damage to components.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision dual-sensor vortex flowmeter, comprising a housing (1), characterized in that: The housing (1) is provided with a first piezoelectric sensor (6) and a second piezoelectric sensor (7) respectively. One end of the housing (1) is provided with a first flange (3). The surface of the first flange (3) is provided with an installation groove (11). The installation groove (11) is provided with a fixing block (10). The installation groove (11) is provided with a filter screen (5). The outer wall of the filter screen (5) is provided with a fixing groove (12).

2. The high-precision dual-sensor vortex flowmeter according to claim 1, characterized in that: The surface of the housing (1) is provided with a flow meter totalizer (2), and one end of the housing (1) is provided with a second flange (4).

3. The high-precision dual-sensor vortex flowmeter according to claim 1, characterized in that: The shell (1) is equipped with a vortex generator (8) and a deswirl de-rotator (9).

4. The high-precision dual-sensor vortex flowmeter according to claim 1, characterized in that: The first piezoelectric sensor (6) and the second piezoelectric sensor (7) are electrically connected to the flow meter totalizer (2), and the first piezoelectric sensor (6) and the second piezoelectric sensor (7) are respectively disposed at both ends of the inner wall of the housing (1).

5. A high-precision dual-sensor vortex flowmeter according to claim 1, characterized in that: The fixing groove (12) is L-shaped, and multiple fixing grooves (12) are arranged in a circular array.

6. The high-precision dual-sensor vortex flowmeter according to claim 1, characterized in that: The fixing blocks (10) are arranged in a circular array, and the shape and position of the fixing blocks (10) are adapted to the fixing groove (12).

7. A high-precision dual-sensor vortex flowmeter according to claim 3, characterized in that: The filter screen (5) is disposed on one side of the vortex generator (8), and the shape and position of the filter screen (5) correspond to the mounting groove (11).

Images