A magnetic flowmeter for measuring fluid flow

Abstract

The utility model relates to the technical field of magnetic flowmeters, and discloses a magnetic flowmeter for measuring fluid flow, comprising a rotating shaft, a turbine seat being fixedly connected to the middle of the left end of the rotating shaft, a turbine blade being fixedly connected to the middle of the outer side of the turbine seat at equal intervals, fixed bearing seats being rotatably connected to the left and right ends of the outer side of the rotating shaft, fixed frames being fixedly connected to the four corners of the outer side of the fixed bearing seat, a tube body being fixedly connected to the top of the fixed frame, strong magnetic fixing rods being fixedly connected to the four corners of the middle of the outer side of the rotating shaft, and a protective tube being fixedly connected to the top of the outer side of the strong magnetic fixing rod. In the utility model, when the medium drives the turbine to rotate, the strong magnetic fixing rod drives the sensing magnetic block to rotate continuously in the measuring tube body, and the sensing magnetic block is not affected by the conductivity of the transmission medium. The protective tube wraps the sensing magnetic block inside the tube body, so that bubbles generated by the transmission medium cannot affect the signal transmission between the sensing magnetic block and the magnetic sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic flowmeters, in particular to a magnetic flowmeter for measuring fluid flow. Background Art

[0002] An electromagnetic flowmeter is an instrument used to measure the flow of conductive liquids. Its working principle is based on Faraday's law of electromagnetic induction. When a conductive liquid flows in a magnetic field, it cuts the magnetic lines of force, thereby generating an induced electromotive force in a direction perpendicular to both the liquid flow direction and the magnetic field direction. By measuring the magnitude of this induced electromotive force, the flow rate of the liquid can be determined.

[0003] Electromagnetic flowmeters have the following notable features: High precision: can provide accurate and reliable flow measurement results. Wide measurement range: can measure a variety of ranges from small flow to large flow. Not affected by the physical properties of the fluid: changes in temperature, pressure, density and viscosity have little effect on the measurement results. No pressure loss: the liquid will not produce additional pressure loss when flowing through the electromagnetic flowmeter. Suitable for a variety of conductive liquids: including water, acid, alkali, salt solution, etc. Electromagnetic flowmeters are widely used in the following fields: Industrial production: in the chemical, petroleum, pharmaceutical, electric power and other industries, used to monitor and control the flow of liquids in the production process. Water supply and drainage engineering: used to measure the water flow in urban water supply and drainage systems. Environmental monitoring: used to monitor sewage discharge to ensure compliance with environmental standards. In chemical production, electromagnetic flowmeters can accurately measure the flow of various chemical solutions, thereby ensuring the stability of the production process and product quality; in urban sewage treatment plants, it can monitor the flow of sewage in real time and provide data support for optimizing the treatment process.

[0004] Existing magnetic flowmeters have requirements for the conductivity of the measured medium. For liquids with too low conductivity, the measurement effect is poor or cannot be measured. In addition, bubbles generated during the transportation of the transported liquid may interfere with the magnetic field and affect the measurement accuracy. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a magnetic flowmeter for measuring fluid flow, aiming to improve the problem that the magnetic flowmeter in the prior art has poor measurement effect on low conductivity media and bubbles in the liquid affect the measurement accuracy.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a magnetic flowmeter for measuring fluid flow, comprising a rotating shaft, a turbine seat is fixedly connected to the middle of the left end of the rotating shaft, a turbine blade is fixedly connected to the middle of the outer side of the turbine seat at equal intervals, the left and right ends of the outer side of the rotating shaft are rotatably connected to fixed bearing seats, the four corners of the outer side of the fixed bearing seat are fixedly connected to a fixing frame, the top of the fixing frame is fixedly connected to a tube body, the four corners of the middle of the outer side of the rotating shaft are fixedly connected to a strong magnetic fixing rod, the top of the outer side of the strong magnetic fixing rod is fixedly connected to a protective tube, the middle of the top of the strong magnetic fixing rod is fixedly connected to a sensing magnetic block, the middle of the top of the tube body is fixedly connected to an equipment pipe, the inner side of the equipment pipe is threadedly connected to an instrument seat, the bottom of the inner side of the instrument seat is fixedly connected to a magnetic sensor, and the middle and upper part of the inner side of the instrument seat is fixedly connected to a signal analysis module.

[0007] As a further description of the above technical solution:

[0008] A deflector is fixedly connected to the middle portion of the left end of the turbine seat.

[0009] As a further description of the above technical solution:

[0010] The left and right ends of the tube body are both fixedly connected with fixed flanges.

[0011] As a further description of the above technical solution:

[0012] An information nameplate is fixedly connected to the middle part of the front end of the tube body.

[0013] As a further description of the above technical solution:

[0014] A display is fixedly connected to the middle of the top of the signal analysis module.

[0015] As a further description of the above technical solution:

[0016] A signal line is fixedly connected between the magnetic sensor and the signal analysis module, and a wire tube is arranged outside the signal line.

[0017] As a further description of the above technical solution:

[0018] The four corners of the left end of the fixing flange are all provided with bolt fixing holes.

[0019] As a further description of the above technical solution:

[0020] A glass cover is threadedly connected to the top of the instrument seat, and resin glass is arranged inside the glass cover.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, when the medium drives the turbine to rotate, the sensing magnet block is driven to rotate continuously in the measuring tube body through the strong magnetic fixing rod. Every time the sensing magnet block passes through the magnetic sensor, an electrical signal is transmitted to the analysis module, which is not affected by the conductivity of the transmission medium.

[0023] 2. In the utility model, the protective tube on the strong magnetic fixing rod wraps the sensing magnet block inside the tube body, so that bubbles generated by the conveying medium cannot affect the signal transmission between the sensing magnet block and the magnetic sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a stereogram of a magnetic flowmeter for measuring fluid flow proposed by the utility model;

[0025] Figure 2 This is a schematic structural diagram of a turbine of a magnetic flowmeter for measuring fluid flow proposed by the utility model;

[0026] Figure 3 The utility model discloses an exploded structural schematic diagram of a magnetic flowmeter for measuring fluid flow.

[0027] Legend:

[0028] 1. Pipe body; 2. Fixed flange; 3. Rotating shaft; 4. Turbine seat; 5. Turbine blades; 6. Fairing; 7. Fixed bearing seat; 8. Fixed frame; 9. Strong magnetic fixing rod; 10. Sensor block; 11. Magnetic sensor; 12. Equipment pipe; 13. Instrument seat; 14. Signal line; 15. Wire tube; 16. Signal analysis module; 17. Display; 18. Resin glass; 19. Glass cover; 20. Protective tube; 21. Bolt fixing hole; 22. Information nameplate. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-Figure 3The utility model provides an embodiment: a magnetic flowmeter for measuring fluid flow, comprising a rotating shaft 3, a turbine seat 4 is fixedly connected to the middle of the left end of the rotating shaft 3, a turbine blade 5 is fixedly connected to the middle of the outer side of the turbine seat 4 at equal intervals, the left and right ends of the outer side of the rotating shaft 3 are rotatably connected to fixed bearing seats 7, the four corners of the outer side of the fixed bearing seat 7 are fixedly connected to fixed frames 8, the top of the fixed frame 8 is fixedly connected to a tube body 1, the four corners of the middle of the outer side of the rotating shaft 3 are fixedly connected to strong magnetic fixing rods 9, and the top of the outer side of the strong magnetic fixing rod 9 is fixedly connected to a protective tube 20. In the process of conveying liquid medium, bubbles generated are easy to produce cavitation in the tube body 1. The protective tube 20 is used to block the introduction of the liquid medium and the sensing magnetic block 10 to reduce the measurement impact rate.

[0031] Reference Figure 1-Figure 3 A sensing magnetic block 10 is fixedly connected to the middle part of the top of the strong magnetic fixing rod 9, and an equipment pipe 12 is fixedly connected to the middle part of the top of the tube body 1. An instrument seat 13 is threadedly connected to the inner side of the equipment pipe 12, and a magnetic sensor 11 is fixedly connected to the bottom of the inner side of the instrument seat 13. A signal analysis module 16 is fixedly connected to the middle and upper part of the inner side of the instrument seat 13. After the magnetic flowmeter is installed, the workers start to transport the liquid. When the water flows through the turbine seat 4 in the pipe, the water pressure drives the turbine blades 5 to rotate under the guidance of the deflector 6, causing the rotating shaft 3 to rotate on the fixed bearing seat 7. At this time, the sensing magnetic block 10 on the strong magnetic fixing rod 9 in the middle of the rotating shaft 3 also rotates in the tube body 1. Every time the sensing magnetic block 10 passes through the magnetic sensor 11 at the bottom of the instrument seat 13, an electrical signal is transmitted to the signal analysis module 16 through the signal line 14.

[0032] Reference Figure 1-Figure 3 A deflector 6 is fixedly connected to the middle of the left end of the turbine seat 4, a fixing flange 2 is fixedly connected to the left and right ends of the tube body 1, an information nameplate 22 is fixedly connected to the middle of the front end of the tube body 1, a display 17 is fixedly connected to the middle of the top of the signal analysis module 16, a signal line 14 is fixedly connected between the magnetic sensor 11 and the signal analysis module 16, a wire tube 15 is arranged on the outside of the signal line 14, bolt fixing holes 21 are opened at the four corners of the left end of the fixing flange 2, a glass cover 19 is threadedly connected to the top of the instrument seat 13, and resin glass 18 is arranged on the inside of the glass cover 19. The appropriate magnetic flowmeter is selected through the information nameplate 22, and the worker uses fixing bolts to fix the fixing flange 2 on the magnetic flowmeter to the flange of the water pipe, and at the same time adds rubber pads and grounding rings between the flanges, and analyzes the data of the electrical signal through the signal analysis module 16, and then displays it on the display 17.

[0033] Working principle: Workers use fixing bolts to fix the fixed flange 2 on the magnetic flowmeter to the flange of the water pipe, and add rubber pads and grounding rings between the flanges. After the magnetic flowmeter is installed, workers start to transport the liquid. When the water flows through the turbine seat 4 in the pipe, the water pressure drives the turbine blades 5 to rotate under the guidance of the deflector 6, prompting the rotating shaft 3 to rotate on the fixed bearing seat 7. At this time, the sensor magnet 10 on the strong magnetic fixing rod 9 in the middle of the rotating shaft 3 is also rotating in the pipe body 1. Every time the sensor magnet 10 passes through the magnetic sensor 11 at the bottom of the instrument seat 13, an electrical signal is transmitted to the signal analysis module 16 through the signal line 14. The signal analysis module 16 analyzes the electrical signal to obtain data, and then displays it on the display 17. During the transportation of the liquid medium, the bubbles generated are prone to produce cavitation in the pipe body 1. The protective tube 20 blocks the introduction of the liquid medium and the sensor magnet 10 to reduce the measurement impact rate.

[0034] 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 magnetic flowmeter for measuring fluid flow, comprising a rotating shaft (3), characterized in that: The middle of the left end of the rotating shaft (3) is fixedly connected to a turbine seat (4), and the middle of the outer side of the turbine seat (4) is equidistantly fixedly connected to turbine blades (5). The left and right ends of the outer side of the rotating shaft (3) are rotatably connected to fixed bearing seats (7), and the four corners of the outer side of the fixed bearing seat (7) are fixedly connected to a fixing frame (8). The top of the fixing frame (8) is fixedly connected to a tube body (1). The four corners of the middle of the outer side of the rotating shaft (3) are fixedly connected to a strong magnetic fixing rod (9), and the top of the outer side of the strong magnetic fixing rod (9) is fixedly connected to a protective tube (20). The middle of the top of the strong magnetic fixing rod (9) is fixedly connected to a sensing magnetic block (10). The middle of the top of the tube body (1) is fixedly connected to an equipment pipe (12), and the inner side of the equipment pipe (12) is threadedly connected to an instrument seat (13), and the inner bottom of the instrument seat (13) is fixedly connected to a magnetic sensor (11), and the inner middle upper part of the instrument seat (13) is fixedly connected to a signal analysis module (16).

2. A magnetic flowmeter for measuring fluid flow according to claim 1, characterized in that: A deflector cover (6) is fixedly connected to the middle portion of the left end of the turbine seat (4).

3. A magnetic flowmeter for measuring fluid flow according to claim 1, characterized in that: The left and right ends of the tube body (1) are both fixedly connected with fixed flanges (2).

4. A magnetic flowmeter for measuring fluid flow according to claim 1, characterized in that: An information nameplate (22) is fixedly connected to the middle portion of the front end of the tube body (1).

5. A magnetic flowmeter for measuring fluid flow according to claim 1, characterized in that: A display (17) is fixedly connected to the middle portion of the top end of the signal analysis module (16).

6. A magnetic flowmeter for measuring fluid flow according to claim 1, characterized in that: A signal line (14) is fixedly connected between the magnetic sensor (11) and the signal analysis module (16), and a wire tube (15) is arranged outside the signal line (14).

7. A magnetic flowmeter for measuring fluid flow according to claim 3, characterized in that: The four corners of the left end of the fixing flange (2) are all provided with bolt fixing holes (21).

8. A magnetic flowmeter for measuring fluid flow according to claim 1, characterized in that: The top end of the instrument seat (13) is threadedly connected with a glass cover (19), and resin glass (18) is arranged inside the glass cover (19).

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