CN218916452U

CN218916452U - Vortex street flowmeter

Info

Publication number: CN218916452U
Application number: CN202320066834.7U
Authority: CN
Inventors: 顾海芹; 孙剑
Original assignee: Jiangsu Meikong Instrument Co ltd
Current assignee: Jiangsu Meikong Instrument Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-04-25
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a vortex shedding flowmeter, which comprises a pipeline connected with a fluid conveying pipe body, wherein connecting flanges are arranged at two ends of the pipeline, a meter rod is fixedly arranged at the outer side of the pipeline, and a display meter is fixedly arranged at the upper end of the meter rod; further comprises: the movable plate is sleeved on the outer side of the sensor, a sealing air bag is connected between the movable plate and the inner wall of the pipeline and used for improving the tightness between the sensor and the pipeline, and a pull rope is fixedly connected to the outer side of the movable plate; the filter screen, fixed mounting is in the inboard of pipeline, the filter screen is located the left side of compensator, just the intermediate position of filter screen runs through and is provided with the pivot, and the fixed pulley is installed in the outside rotation of filter screen. The vortex shedding flowmeter can clean the sensor in real time under the drive of fluid, ensure the detection precision of the sensor, and filter and cut larger impurities at the same time, so that the vortex shedding flowmeter is prevented from being attached to the outer side of a vortex generator to influence the generation of vortex.

Description

Vortex street flowmeter

Technical Field

The utility model relates to the technical field of flowmeters, in particular to a vortex street flowmeter.

Background

The vortex shedding flowmeter is a common fluid conveying flow measuring instrument, and the sensor is used for detecting fluid vortex generated by an generating body to measure the flow, but the conventional vortex shedding flowmeter still has some defects.

In the prior art, as the isolated vortex shedding flowmeter of publication number CN217900915U, it sets up through the cooperation between rotating block, the bull stick, elliptic piece and the fixed block, make only need rotate the rotating block, the rotating block drives the connecting cylinder and rotates can make elliptic piece rotate and separate with the fixed block, and then make the fixed block roll-off from the fixed slot under reset spring's effect, and then conveniently dismantle turbine flowmeter from the water pipe, make things convenient for the workman to clear up impurity on the filter screen plate, increase workman's work efficiency, it is provided with the filter screen plate and realizes the filtration to impurity in the fluid, but can't clear up impurity in real time, make follow-up needs dismantle whole flowmeter and accomplish the clearance of filtrate, the clearance degree of difficulty has been increased, there is certain use defect.

Disclosure of Invention

The utility model aims to provide a vortex shedding flowmeter to solve the problems that the vortex shedding flowmeter in the current market proposed by the background technology cannot clean filtered impurities in real time, so that the whole flowmeter needs to be disassembled to clean filtered matters later, and the cleaning difficulty is increased.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the vortex shedding flowmeter comprises a pipeline connected with a fluid conveying pipe body, wherein connecting flanges are arranged at two ends of the pipeline, a meter rod is fixedly arranged at the outer side of the pipeline, a display meter is fixedly arranged at the upper end of the meter rod, a compensator is connected between the display meter and the pipeline, a sensor is fixedly arranged at the lower end of the meter rod, the sensor penetrates through the inner side of the pipeline, and a vortex generator is fixedly arranged at the inner side of the pipeline;

further comprises:

the movable plate is sleeved on the outer side of the sensor, a sealing air bag is connected between the movable plate and the inner wall of the pipeline and used for improving the tightness between the sensor and the pipeline, and a pull rope is fixedly connected to the outer side of the movable plate;

the guide column is fixedly arranged on the inner wall of the pipeline and used for guiding the movable plate;

the filter screen, fixed mounting is in the inboard of pipeline, the filter screen is located the left side of compensator, just the intermediate position of filter screen runs through and is provided with the pivot, and the fixed pulley is installed in the outside rotation of filter screen.

Preferably, the movable plate is arranged in a disc-shaped structure, the movable plate is integrally inclined, the movable plate and the sensor form a lifting structure, and simultaneously the inner wall of a through hole formed in the middle of the movable plate is attached to the outer wall of the sensor.

Through adopting above-mentioned technical scheme for when the pipeline inboard passes through fluid, fluid can strike the inclined plane of fly leaf, makes the fly leaf laminate and moves up in the outer wall of sensor, thereby automatically regulated fly leaf's position.

Preferably, the two guide posts are symmetrically arranged about the sensor, the guide posts are arranged in parallel with the sensor, the guide posts penetrate through the movable plate, the springs are sleeved on the outer sides of the guide posts, and the movable plate and the guide posts form an elastic lifting structure through the springs.

Through adopting above-mentioned technical scheme for when the fly leaf goes up and down to adjust, the guide post can play effectual guide effect, and the guide post resets under the spring force effect, can strike off the attached impurity in the sensor outside voluntarily, ensures the measurement accuracy of sensor.

Preferably, the sealing air bag is arranged in a tubular structure, the sealing air bag is sleeved on the outer side of the sensor, and the upper end of the sealing air bag is attached to the joint of the pipeline and the sensor.

By adopting the technical scheme, the movable plate can be lifted under the impact of fluid, so that the sealing air bag is extruded, the sealing air bag is tightened, and the tightness between the pipeline and the sensor is further improved.

Preferably, the stay cord laminating is in the outside of fixed pulley, just the other end of stay cord twines in the outside of pivot to be connected with the torsional spring between pivot and the filter screen.

Through adopting above-mentioned technical scheme for when the fly leaf moves up, can carry out elastic rotation through stay cord pulling pivot.

Preferably, the left end outside of pivot evenly is fixed and is provided with cutting blade, just cutting blade laminating is in the outside of filter screen.

Through adopting above-mentioned technical scheme for when the pivot rotation resets, can drive cutting blade and cut the bulky impurity that filters out the filter screen outside, thereby avoid impurity around locating the outside of vortex generator and influence its disrotatory vortex production.

Compared with the prior art, the utility model has the beneficial effects that: this vortex shedding flowmeter can clear up the sensor in real time under fluid drive, ensures its detection precision, can filter bigger impurity simultaneously and cut up, avoids adhering to the vortex and takes place the body outside and influence the production of vortex, and the specific content is as follows:

1. the movable plate and the guide post are arranged, when fluid passes through the pipeline, the movable plate moves upwards along the guide post under the impact of the fluid, and after the measurement is finished, the movable plate moves downwards under the action of the elastic force of the spring, so that the impurities attached to the outer side of the sensor are automatically scraped and cleaned, and the influence on the detection precision caused by excessive impurities attached to the outer side of the sensor is avoided;

2. be provided with stay cord, filter screen and cutting blade, the filter screen can filter out bulky impurity in the fluid, when the fly leaf moves under the effect of liquid flow impact, it can pull the stay cord for the stay cord can pull the pivot and rotate, make the spring compression of pivot, when the fly leaf resets, the pivot can drive cutting blade rotatory under torsional spring elasticity effect, thereby cut bulky impurity, and then avoid the filter screen to take place to block up, also avoided bulky impurity winding in the outside of vortex generator and influence vortex production simultaneously.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a three-dimensional cross-sectional structure of a pipeline according to the present utility model;

FIG. 3 is a schematic perspective view of a movable plate according to the present utility model;

FIG. 4 is a schematic perspective view of a movable plate according to the present utility model;

fig. 5 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.

In the figure: 1. a pipe; 2. a watch bar; 3. a display table; 4. a compensator; 5. a sensor; 6. a vortex generator; 7. a movable plate; 8. a guide post; 9. a spring; 10. sealing the air bag; 11. a pull rope; 12. a filter screen; 13. a rotating shaft; 14. a fixed pulley; 15. a cutting blade.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the vortex shedding flowmeter comprises a pipeline 1 connected with a fluid conveying pipe body, wherein connecting flanges are arranged at two ends of the pipeline 1, a meter rod 2 is fixedly arranged on the outer side of the pipeline 1, a display meter 3 is fixedly arranged at the upper end of the meter rod 2, a compensator 4 is connected between the display meter 3 and the pipeline 1, a sensor 5 is fixedly arranged at the lower end of the meter rod 2, the sensor 5 penetrates through the inner side of the pipeline 1, and a vortex generator 6 is fixedly arranged on the inner side of the pipeline 1;

further comprises: the movable plate 7 is sleeved on the outer side of the sensor 5, a sealing air bag 10 is connected between the movable plate 7 and the inner wall of the pipeline 1 and used for improving the tightness between the sensor 5 and the pipeline 1, and a pull rope 11 is fixedly connected on the outer side of the movable plate 7; the guide column 8 is fixedly arranged on the inner wall of the pipeline 1 and is used for guiding the movable plate 7;

the movable plate 7 is arranged in a disc-shaped structure, the movable plate 7 is integrally inclined, the movable plate 7 and the sensor 5 form a lifting structure, and meanwhile, the inner wall of a through hole formed in the middle of the movable plate 7 is attached to the outer wall of the sensor 5. The guide posts 8 are symmetrically arranged about the sensor 5, the guide posts 8 are arranged in parallel with the sensor 5, the guide posts 8 penetrate through the movable plate 7, the springs 9 are sleeved on the outer sides of the guide posts 8, and the movable plate 7 and the guide posts 8 form an elastic lifting structure through the springs 9. The sealing air bag 10 is arranged in a tubular structure, the sealing air bag 10 is sleeved on the outer side of the sensor 5, and the upper end of the sealing air bag 10 is attached to the joint of the pipeline 1 and the sensor 5;

as shown in fig. 1-3 and fig. 5, the pipeline 1 is fixedly connected with the fluid conveying pipe body through the flange, when the fluid is conveyed, the fluid can impact the movable plate 7 on the inner side of the pipeline 1, so that the movable plate 7 moves upwards along the guide post 8, meanwhile, the movable plate 7 can squeeze the sealing air bag 10, so that the sealing air bag 10 is tightened, the tightness between the pipeline 1 and the sensor 5 is further improved, at the moment, the vortex generator 6 can generate vortex on the fluid, the sensor 5 can detect the flow through the vortex, and when the fluid stops conveying, the movable plate 7 moves downwards under the action of the elasticity of the spring 9 to reset, so that impurities attached to the outer side of the sensor 5 are scraped, and the detection precision of the sensor 5 is improved.

The filter screen 12 is fixedly arranged on the inner side of the pipeline 1, the filter screen 12 is positioned on the left side of the compensator 4, a rotating shaft 13 is arranged in the middle of the filter screen 12 in a penetrating manner, and a fixed pulley 14 is rotatably arranged on the outer side of the filter screen 12. The stay cord 11 is laminated in the outside of fixed pulley 14, and the other end of stay cord 11 twines in the outside of pivot 13 to be connected with the torsional spring between pivot 13 and the filter screen 12. The outer side of the left end of the rotating shaft 13 is uniformly and fixedly provided with a cutting blade 15, and the cutting blade 15 is attached to the outer side of the filter screen 12;

as shown in fig. 1-2 and fig. 4, when the fluid is conveyed, the filter screen 12 can filter the bulky impurity in the fluid, so that the bulky impurity is prevented from being wound on the outer side of the vortex generator 6 to influence the vortex, and when the movable plate 7 moves upwards, the movable plate 7 can pull the rotating shaft 13 to elastically rotate, after the measurement is finished, the movable plate 7 can descend and reset, at the moment, the rotating shaft 13 can rotate under the action of the elasticity of the torsion spring, the rotating shaft 13 can drive the cutting blade 15 to synchronously rotate, and the cutting blade 15 can cut the bulky impurity filtered out from the outer side of the filter screen 12, so that the filter screen 12 is prevented from being blocked.

Working principle: when the vortex street flowmeter is used, firstly, the pipeline 1 is arranged in a fluid conveying pipeline according to the illustrations of figures 1-5, when fluid is conveyed, the filter screen 12 can filter large-volume impurities, meanwhile, the movable plate 7 can move upwards under the action of the fluid, the sensor 5 can detect vortex generated by the vortex generator 6, so that flow measurement is realized, after the flow measurement is finished, the movable plate 7 can move downwards to reset, the impurities attached to the outer side of the sensor 5 are automatically cleaned, the rotating shaft 13 can drive the cutting blade 15 to rotate under the action of the elasticity of the torsion spring, so that the filtered large-volume impurities are cut, and the filter screen 12 is prevented from being blocked.

What is not described in detail in this specification is prior art known to those skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The vortex shedding flowmeter comprises a pipeline (1) connected with a fluid conveying pipe body, wherein connecting flanges are arranged at two ends of the pipeline (1), a meter rod (2) is fixedly arranged on the outer side of the pipeline (1), a display meter (3) is fixedly arranged at the upper end of the meter rod (2), a compensator (4) is connected between the display meter (3) and the pipeline (1), a sensor (5) is fixedly arranged at the lower end of the meter rod (2), the sensor (5) penetrates through the inner side of the pipeline (1), and a vortex generator (6) is fixedly arranged on the inner side of the pipeline (1);

characterized by further comprising:

the movable plate (7) is sleeved on the outer side of the sensor (5), a sealing air bag (10) is connected between the movable plate (7) and the inner wall of the pipeline (1) and used for improving the tightness between the sensor (5) and the pipeline (1), and a pull rope (11) is fixedly connected to the outer side of the movable plate (7);

the guide column (8) is fixedly arranged on the inner wall of the pipeline (1) and is used for guiding the movable plate (7);

the filter screen (12) is fixedly arranged on the inner side of the pipeline (1), the filter screen (12) is positioned on the left side of the compensator (4), a rotating shaft (13) is arranged in the middle of the filter screen (12) in a penetrating mode, and a fixed pulley (14) is rotatably arranged on the outer side of the filter screen (12).

2. The vortex shedding flowmeter of claim 1, wherein: the movable plate (7) is arranged in a disc-shaped structure, the movable plate (7) is integrally inclined, the movable plate (7) and the sensor (5) form a lifting structure, and meanwhile, the inner wall of a through hole formed in the middle of the movable plate (7) is attached to the outer wall of the sensor (5).

3. The vortex shedding flowmeter of claim 1, wherein: the guide posts (8) are symmetrically arranged about the sensor (5) and are arranged in parallel with the sensor (5), the guide posts (8) penetrate through the movable plate (7), springs (9) are sleeved on the outer sides of the guide posts (8), and the movable plate (7) and the guide posts (8) form an elastic lifting structure through the springs (9).

4. The vortex shedding flowmeter of claim 1, wherein: the sealing air bag (10) is arranged in a tubular structure, the sealing air bag (10) is sleeved on the outer side of the sensor (5), and the upper end of the sealing air bag (10) is attached to the joint of the pipeline (1) and the sensor (5).

5. The vortex shedding flowmeter of claim 1, wherein: the stay cord (11) laminating is in the outside of fixed pulley (14), just the other end of stay cord (11) twines in the outside of pivot (13), and be connected with the torsional spring between pivot (13) and filter screen (12).

6. The vortex shedding flowmeter of claim 1, wherein: the left end outside of pivot (13) evenly is fixed and is provided with cutting blade (15), just cutting blade (15) laminating is in the outside of filter screen (12).