Electromagnetic flow detection principle demonstration device

Abstract

The utility model discloses an electromagnetic flow detection principle demonstration device which comprises a bottom plate, a demonstration rack and a supporting plate, the demonstration rack is fixedly connected to the upper end of the bottom plate, the supporting plate is fixedly connected to the middle of the upper end face of the demonstration rack, a distance adjusting mechanism is arranged on the demonstration rack, an electromagnetic flow meter is arranged on the distance adjusting mechanism, and the electromagnetic flow meter is arranged on the bottom plate. A circulating mechanism is arranged on the bottom plate, a supporting rod is vertically arranged at the upper end of the demonstration rack, an LED lamp tube is fixedly connected to the supporting rod, a connector is arranged on the supporting rod, the connector is connected with the LED lamp tube through a wire, an induced voltage electrode is arranged on the side wall of the electromagnetic flowmeter, the induced voltage electrode is connected with the connector through a wire, and the electromagnetic flowmeter is connected with the electromagnetic flowmeter through a wire. The distance adjusting mechanism comprises a sliding groove, a sliding block, a supporting pipe, a vertical plate and an electric push rod. The circulating mechanism comprises a hose, a liquid storage tank, a circulating pump and a circulating pipe. The utility model belongs to the technical field of principle demonstration, and particularly relates to an electromagnetic flow detection principle demonstration device.

Description

Technical Field

[0001] The utility model belongs to the technical field of principle demonstration, and specifically refers to an electromagnetic flow detection principle demonstration device. Background Art

[0002] Electromagnetic flow detection uses the principle of electromagnetic induction. When the moving water flow cuts the magnetic lines of force, an induced electromotive force is generated. The magnitude of the induced electromotive force is proportional to the magnetic field strength, the speed of relative movement and the length of the wire, and then the flow rate is obtained. In the principle demonstration, the existing electromagnetic flow detection principle demonstration device, such as the electromagnetic flow detection principle demonstration device disclosed in application number CN202321175824.3, can detect the amount of fluid flowing through the pipeline in real time through the cooperation of the measuring instrument coil and the measuring instrument electrode in the upper shell of the meter body, so that the electromagnetic flowmeter model can display the corresponding information through the display component.

[0003] However, in actual use, the principle of electromagnetic flow detection cannot be intuitively demonstrated by relying solely on measured values, and the influence of flow rate on induced electromotive force cannot be truly felt through senses. In addition, the structure is fixed, and the electromagnetic flowmeter model is fixed on the platform through a model bracket, which is not convenient for demonstrating electromagnetic flowmeters of different sizes. Therefore, we propose an electromagnetic flow detection principle demonstration device to solve the above problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an electromagnetic flow detection principle demonstration device, which effectively solves the problem that the existing magnetic flow detection principle demonstration device cannot intuitively display the influence of flow size on the induced electromotive force, and solves the problem of inconvenience in installing electromagnetic flow meters of different sizes and models.

[0005] The technical solution adopted by the utility model is as follows: the utility model proposes an electromagnetic flow detection principle demonstration device, including a base plate, a demonstration stand and a support plate, the demonstration stand is fixedly connected to the upper end of the base plate, the support plate is fixedly connected to the middle of the upper end surface of the demonstration stand, the demonstration stand is provided with a distance adjustment mechanism, the distance adjustment mechanism is provided with an electromagnetic flowmeter, the base plate is provided with a circulation mechanism, and the circulation mechanism is connected to the electromagnetic flowmeter, the upper end of the demonstration stand is vertically provided with a support rod, and the support rod is fixedly connected with an LED lamp tube.

[0006] As an improvement of this solution, a joint is provided on the support rod, and the joint is connected to the LED lamp tube by wires, an induction voltage electrode is provided on the side wall of the electromagnetic flowmeter, and the induction voltage electrode is connected to the joint by wires, and an operation panel is provided at the upper end of the demonstration stand.

[0007] As an improvement of the present scheme, the distance adjustment mechanism includes a slide groove, a slider, a support tube, a vertical plate and an electric push rod, the slide groove is arranged at the upper end of the demonstration stand, the slider is slidably connected to the slide groove, the support tube is fixedly connected to the slider and passes through the slider, the vertical plate is arranged on the inner wall of the support plate, one end of the electric push rod is fixedly connected to the vertical plate, and the other end of the electric push rod is connected to the slider.

[0008] As an improvement of the present solution, one end of the support tube located above the demonstration stand is threadedly connected to a movable ring, a swivel is rotatably connected to the movable ring, a connecting flange is fixedly connected to the swivel, and the connecting flange is connected to both ends of the electromagnetic flowmeter by bolts, a pad is placed on the support plate, and the upper end of the pad is in contact with the bottom of the electromagnetic flowmeter.

[0009] As an improvement of the present scheme, the circulation mechanism includes a hose, a liquid storage tank, a circulation pump and a circulation pipe. The hose is provided in two groups and is pluggably connected to the lower end of the support pipe. The liquid storage tank is provided on the bottom plate and below the demonstration stand. The circulation pump is provided on the bottom plate and is symmetrically arranged with the liquid storage tank. The circulation pump and the liquid storage tank are respectively connected to the two groups of hoses. One end of the circulation pipe is provided on the liquid storage tank, and the other end of the circulation pipe is connected to the circulation pump.

[0010] As an improvement of the present solution, a circular tube is provided in the middle of the rotating ring and a sealing ring is provided between the rotating ring and the inner wall of the supporting tube.

[0011] As an improvement of the present solution, the connecting flange is arranged between the rotating ring and the electromagnetic flowmeter, the moving ring and the electric push rod are coaxially arranged, and the circulating pipe and the bottom plate are parallelly arranged.

[0012] As an improvement of the present solution, the demonstration stand is arranged in a U-shaped plate shape, the slide groove is arranged in a rectangular shape, and the cross-section of the slider is arranged in an I-shaped shape.

[0013] The beneficial effects achieved by the utility model using the above structure are as follows:

[0014] 1. An LED lamp is provided, which is connected to the induction voltage electrode of the electromagnetic flowmeter. The brightness of the LED lamp can be controlled according to the flow rate by using an amplifier circuit. The influence of the flow rate on the induced electromotive force can be intuitively seen, so as to better demonstrate the relationship between the two.

[0015] 2. Through the distance adjustment mechanism, the movable slider can be used to adjust the distance between the support tubes on both sides of the electromagnetic flowmeter, so that electromagnetic flowmeters of different sizes can be installed on the square plate. The movable ring and swivel ring are used to facilitate the clamping installation between the electromagnetic flowmeter, which improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the overall structure of an electromagnetic flow detection principle demonstration device proposed by the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0018] Figure 3 This is a cross-sectional view of a device for demonstrating the principle of electromagnetic flow detection proposed by the utility model;

[0019] Figure 4 for Figure 3 A partial enlarged schematic diagram of part B.

[0020] Among them, 1. Base plate; 2. Demonstration stand; 3. Support plate; 4. Distance adjustment mechanism; 5. Electromagnetic flowmeter; 6. Circulation mechanism; 7. Support rod; 8. LED lamp tube; 9. Connector; 10. Induction voltage electrode; 11. Operation panel; 12. Slide; 13. Slider; 14. Support tube; 15. Vertical plate; 16. Electric push rod; 17. Moving ring; 18. Swivel; 19. Connecting flange; 20. Pad; 21. Hose; 22. Liquid storage tank; 23. Circulation pump; 24. Circulation pipe.

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the utility model proposes an electromagnetic flow detection principle demonstration device, including a base plate 1, a demonstration stand 2 and a support plate 3, the demonstration stand 2 is fixedly connected to the upper end of the base plate 1, the support plate 3 is fixedly connected to the middle of the upper end surface of the demonstration stand 2, the demonstration stand 2 is provided with a distance adjustment mechanism 4, the distance adjustment mechanism 4 is provided with an electromagnetic flowmeter 5, the base plate 1 is provided with a circulation mechanism 6, and the circulation mechanism 6 is connected to the electromagnetic flowmeter 5, the upper end of the demonstration stand 2 is vertically provided with a support rod 7, the support rod 7 is fixedly connected with an LED lamp 8; the support rod 7 is provided with a joint 9, and the joint 9 is connected to the LED lamp 8 by wire, the side wall of the electromagnetic flowmeter 5 is provided with an induction voltage electrode 10, the induction voltage electrode 10 and the joint 9 are connected by wire, and the upper end of the demonstration stand 2 is provided with an operation panel 11.

[0024] In order to adapt to the installation of liquid flow meters 5 of different sizes and models, the distance adjustment mechanism 4 includes a slide 12, a slider 13, a support tube 14, a vertical plate 15 and an electric push rod 16. The slide 12 is arranged at the upper end of the demonstration stand 2, the slider 13 is slidably connected to the slide 12, the support tube 14 is fixedly connected to the slider 13 and penetrates the slider 13, the vertical plate 15 is arranged on the inner wall of the support plate 3, one end of the electric push rod 16 is fixedly connected to the vertical plate 15, and the other end of the electric push rod 16 is connected to the slider 13; the end of the support tube 14 above the demonstration stand 2 is threadedly connected to a moving ring 17, the moving ring 17 is rotatably connected to a swivel 18, the swivel 18 is fixedly connected to a connecting flange 19, and the connecting flange 19 is connected to both ends of the electromagnetic flowmeter 5 by bolts, a pad 20 is placed on the support plate 3, and the upper end of the pad 20 is in contact with the bottom of the electromagnetic flowmeter 5.

[0025] In order to realize the circulation of liquid, the circulation mechanism 6 includes a hose 21, a liquid storage tank 22, a circulation pump 23 and a circulation pipe 24. The hose 21 is provided with two groups and is plugged and connected to the lower end of the support tube 14. The liquid storage tank 22 is provided on the base plate 1 and is provided below the demonstration stand 2. The circulation pump 23 is provided on the base plate 1 and is symmetrically arranged with the liquid storage tank 22. The circulation pump 23 and the liquid storage tank 22 are respectively connected to the two groups of hoses 21. One end of the circulation pipe 24 is provided on the liquid storage tank 22, and the other end of the circulation pipe 24 is connected to the circulation pump 23.

[0026] A circular tube is provided in the middle of the swivel 18 and a sealing ring is provided between the swivel and the inner wall of the support tube 14; a connecting flange 19 is provided between the swivel 18 and the electromagnetic flowmeter 5, the moving ring 17 is coaxially arranged with the electric push rod 16, and the circulation pipe 24 is parallel to the bottom plate 1.

[0027] The demonstration stand 2 is in the shape of a U-shaped plate, the slide groove 12 is in the shape of a rectangle, and the cross section of the slider 13 is in the shape of an I-beam.

[0028] When in use, according to the size of the electromagnetic flowmeter 5, the electric push rod 16 is controlled to push the slider 13 to slide along the slide groove 12, and then the cushion block 20 is placed on the support plate 3, the electromagnetic flowmeter 5 is placed on the cushion block 20, and the moving rings 17 on both sides are rotated to make it approach the electromagnetic flowmeter 5 along the direction of the axis of the support tube 14. At the same time, the sealing gasket is placed between the electromagnetic flowmeter 5 and the connecting flange 19 until the connecting flange 19 on the rotating ring 18 is tightly pressed against the two ends of the electromagnetic flowmeter 5, and then fixed with bolts, and the connector 9 and the induction voltage electrode 10 are connected by external wires. , turn on the circulation pump 23 to allow the liquid in the liquid storage tank 22 to be transported to the hose 21 through the circulation pipe 24, and enter the electromagnetic flowmeter 5 through the support pipe 14, and finally enter the hose 21 from the support pipe 14 on the other side of the electromagnetic flowmeter 5 and return to the circulation mechanism 6. When the liquid passes through the electromagnetic flowmeter 5, an induced electromotive force is generated on the induced voltage electrode 10, which is amplified by the wire to make the LED lamp 8 produce light. By observing the brightness of the LED lamp 8, the change in flow rate can be intuitively seen. The above is the use process of the entire electromagnetic flow detection principle demonstration device.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A device for demonstrating the principle of electromagnetic flow detection, comprising a base plate (1), a demonstration stand (2) and a support plate (3), wherein the demonstration stand (2) is fixedly connected to the upper end of the base plate (1), and the support plate (3) is fixedly connected to the middle of the upper end surface of the demonstration stand (2), characterized in that: The demonstration stand (2) is provided with a distance adjustment mechanism (4), the distance adjustment mechanism (4) is provided with an electromagnetic flowmeter (5), the bottom plate (1) is provided with a circulation mechanism (6), and the circulation mechanism (6) is connected to the electromagnetic flowmeter (5), and a support rod (7) is vertically provided at the upper end of the demonstration stand (2), and an LED lamp tube (8) is fixedly connected to the support rod (7).

2. According to claim 1, a device for demonstrating the principle of electromagnetic flow detection is characterized in that: The support rod (7) is provided with a joint (9), and the joint (9) is connected to the LED lamp tube (8) by wires. The side wall of the electromagnetic flowmeter (5) is provided with an induction voltage electrode (10), and the induction voltage electrode (10) is connected to the joint (9) by wires. The upper end of the demonstration stand (2) is provided with an operation panel (11).

3. The electromagnetic flow detection principle demonstration device according to claim 2 is characterized in that: The distance adjustment mechanism (4) comprises a slide groove (12), a slider (13), a support tube (14), a vertical plate (15) and an electric push rod (16); the slide groove (12) is arranged at the upper end of the demonstration stand (2); the slider (13) is slidably connected to the slide groove (12); the support tube (14) is fixedly connected to the slider (13) and penetrates the slider (13); the vertical plate (15) is arranged on the inner wall of the support plate (3); one end of the electric push rod (16) is fixedly connected to the vertical plate (15); and the other end of the electric push rod (16) is connected to the slider (13).

4. The electromagnetic flow detection principle demonstration device according to claim 3 is characterized in that: The support tube (14) is threadedly connected to a movable ring (17) at one end above the demonstration stand (2); a swivel (18) is rotatably connected to the movable ring (17); a connecting flange (19) is fixedly connected to the swivel (18); and the connecting flange (19) is connected to both ends of the electromagnetic flowmeter (5) by bolts; a cushion block (20) is placed on the support plate (3), and the upper end of the cushion block (20) is in contact with the bottom of the electromagnetic flowmeter (5).

5. The electromagnetic flow detection principle demonstration device according to claim 4 is characterized in that: The circulation mechanism (6) comprises a hose (21), a liquid storage tank (22), a circulation pump (23) and a circulation pipe (24); the hose (21) is provided with two groups and is pluggably connected to the lower end of the support pipe (14); the liquid storage tank (22) is provided on the bottom plate (1) and below the demonstration stand (2); the circulation pump (23) is provided on the bottom plate (1) and is symmetrically arranged with the liquid storage tank (22); the circulation pump (23) and the liquid storage tank (22) are respectively connected to the two groups of hoses (21); one end of the circulation pipe (24) is provided on the liquid storage tank (22), and the other end of the circulation pipe (24) is connected to the circulation pump (23).

6. The electromagnetic flow detection principle demonstration device according to claim 5 is characterized in that: A circular tube is provided in the middle of the rotating ring (18) and a sealing ring is provided between the rotating ring and the inner wall of the supporting tube (14).

7. The electromagnetic flow detection principle demonstration device according to claim 6 is characterized in that: The connecting flange (19) is arranged between the rotating ring (18) and the electromagnetic flowmeter (5), the moving ring (17) and the electric push rod (16) are coaxially arranged, and the circulation pipe (24) and the bottom plate (1) are arranged in parallel.

8. The electromagnetic flow detection principle demonstration device according to claim 7 is characterized in that: The demonstration stand (2) is arranged in a U-shaped plate shape, the slide groove (12) is arranged in a rectangular shape, and the cross section of the slider (13) is arranged in an I-shaped shape.

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