Electromagnetic flowmeter
By introducing a rectifier stabilizer into the electromagnetic flowmeter, the uniform and stable flow of fluid in the detection pipeline is ensured, and the inaccurate detection results caused by fluid instability in the prior art is solved, and more accurate flow measurement is achieved.
Patent Information
- Application Number
- CN202421001862.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing electromagnetic flowmeters have inaccurate detection results due to the instability and unevenness of the fluid inside the pipeline.
An electromagnetic flowmeter including a detection pipeline and a rectifying flow stabilizer is designed. The rectifying flow stabilizer is composed of a pressurized channel, a rectifying channel and a steady flow channel. The steady flow fan rotates inside the rectifying channel, and the fluid increases through the pressurized channel. After pressure, it flows evenly in the rectifier channel. After rotation of the steady flow fan, it gradually decompresses the steady flow of the fluid to ensure stable flow. The detection component generates a magnetic field induced potential through the excitation coil to measure the flow.
Through the structure of the rectifier flow stabilizer, the fluid achieves uniform and stable flow in the detection pipeline, improving the accuracy of flow detection.
Smart Images
Figure CN222211818U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flowmeters, in particular to an electromagnetic flowmeter. Background Art
[0002] Electromagnetic flowmeters (EMF for short) are new flow measurement instruments that developed rapidly in the 1950s and 1960s with the development of electronic technology. Electromagnetic flowmeters are instruments that use the principle of electromagnetic induction to measure the flow of conductive fluids based on the electromotive force induced when the conductive fluid passes through an external magnetic field.
[0003] When the electromagnetic flowmeter in the prior art is used, the instability and unevenness of the flow of the fluid inside the pipeline may lead to inaccurate detection results. Utility Model Content
[0004] The purpose of the utility model is to provide an electromagnetic flowmeter to solve the problem in the above-mentioned background technology that the instability and unevenness of the flow of the fluid inside the pipeline may lead to inaccurate detection results.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electromagnetic flowmeter, comprising a detection pipeline, on which a detection assembly is installed;
[0006] A rectifier and flow stabilizer is installed on one side of the interior of the detection pipeline, and the rectifier and flow stabilizer includes a pressurizing channel, a rectifying channel and a flow stabilizing channel arranged in sequence, and a flow stabilizing fan is rotatably installed at one end of the interior of the flow stabilizing channel close to the rectifying channel through a bearing.
[0007] As a further solution of the utility model: the interior of the pressurizing channel is provided with dense gradually decreasing flow holes, the interior of the rectifying channel is provided with flat holes connected with the gradually decreasing flow holes, and the interior of the stabilizing flow channel is provided with gradually increasing flow holes connected with the rectifying channel.
[0008] As a further solution of the utility model: the detection component includes: a mounting shell is installed on the side of the detection pipeline outside close to the steady flow channel, excitation coils are installed on the upper and lower sides of the inside of the mounting shell, and electrodes are installed on the front and rear sides of the mounting shell.
[0009] As a further solution of the utility model: the top surface of the mounting shell is provided with a power supply for supplying power to the electrodes.
[0010] As a further solution of the utility model: a display screen is provided on the front surface of the power supply.
[0011] Compared with the prior art, the beneficial effect of the utility model is as follows: in the utility model, the fluid first increases its own pressure through the pressurizing channel, and then reaches the inside of the rectifying channel to be rectified, so that it flows evenly inside the rectifying channel, and then reaches the flow stabilizing fan. Since the flow stabilizing fan rotates when the fluid passes through the flow stabilizing fan, the fluid pressure can be reduced. Subsequently, the fluid reaches the inside of the flow stabilizing channel and is discharged. Since the flow stabilizing channel is a structure with a gradually increasing inner cavity, the fluid pressure is further reduced, which can maintain the stable flow of the fluid and ensure accurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of an electromagnetic flowmeter;
[0013] Figure 2 The figure is a schematic diagram of the internal structure of a rectifier and current stabilizer in an electromagnetic flowmeter.
[0014] In the figure: 1. connecting flange; 2. detection pipeline; 3. rectifier and flow stabilizer; 31. first bell mouth; 311. gradually decreasing flow hole; 32. rectifying channel; 321. flat hole; 33. flow stabilizing channel; 331. gradually increasing flow hole; 34. flow stabilizing fan; 4. display screen; 5. power supply; 6. mounting shell; 7. electrode; 8. excitation coil. DETAILED DESCRIPTION
[0015] See also Figure 1 As shown, in the embodiment of the utility model, an electromagnetic flowmeter includes a detection pipeline 2, connecting flanges 1 are arranged on both sides of the detection pipeline 2, and a detection component is installed on the detection pipeline 2, and the detection component can detect the flow inside the detection pipeline 2. Preferably, the detection component includes: a mounting shell 6 is installed on the side of the detection pipeline 2 close to the steady flow channel 33, an excitation coil 8 is installed on the upper and lower sides of the interior of the mounting shell 6, and electrodes 7 are installed on the front and rear sides of the mounting shell 6. A power supply 5 for supplying power to the excitation coil 8 is provided on the top surface of the mounting shell 6. The power supply 5 provides current to the excitation coil 8, and the excitation current flows through the coil to generate a magnetic field. The magnetic field acts on the conductive medium to form an induced potential, and finally a voltage signal proportional to the flow velocity is obtained from the electrode 7. The power supply is EX, the electromagnetic induction intensity is B, and the pipeline diameter is D. The flow velocity is calculated according to EX=BDv;
[0016] like Figure 1 , a display screen 4 is provided on the front surface of the power source 5 to display the flow rate;
[0017] Combination Figure 1 and Figure 2As shown, the device includes a rectifying and stabilizing device 3 for stabilizing and rectifying the flow of the fluid. The rectifying and stabilizing device 3 is installed on one side of the interior of the detection pipeline 2, and the rectifying and stabilizing device 3 includes a pressurizing channel 31, a rectifying channel 32 and a stabilizing channel 33 arranged in sequence. A stabilizing fan 34 is rotatably installed at one end of the interior of the stabilizing channel 33 close to the rectifying channel 32 through a bearing, that is, the fluid first increases its own pressure through the pressurizing channel 31 (the inner cavity gradually decreases, so the fluid pressure gradually increases), and then reaches the interior of the rectifying channel 32 to be rectified, so that it flows evenly in the interior of the rectifying channel 32, and then reaches the stabilizing fan 34. Since the stabilizing fan 34 rotates when the fluid passes through the stabilizing fan 34, the fluid pressure can be reduced, and then the fluid reaches the interior of the stabilizing channel 33 and is discharged. Since the stabilizing channel is a structure with a gradually increasing inner cavity, the fluid pressure is further reduced, and the stable flow of the fluid can be maintained;
[0018] Preferably, the interior of the pressurizing channel 31 is provided with dense and gradually decreasing flow holes 311, the interior of the rectifying channel 32 is provided with flat holes 321 connected to the gradually decreasing flow holes 311, and the interior of the stabilizing flow channel 33 is provided with gradually increasing flow holes 331 connected to the rectifying channel 32. The small flow channel can further make the fluid flow evenly.
[0019] The working principle of the utility model is: when using the device, water flows into the interior of the detection pipeline 2 through the connecting flange 1 on the left side, and the fluid first increases its own pressure through the pressurizing channel 31 (the inner cavity gradually decreases, so the fluid pressure gradually increases), and then reaches the interior of the rectifying channel 32 to be rectified, so that it flows evenly in the rectifying channel 32, and then reaches the stabilizing fan 34. Since the stabilizing fan 34 rotates when the fluid passes through the stabilizing fan 34, the fluid pressure can be reduced, and then the fluid reaches the interior of the stabilizing channel 33 for discharge. Since the stabilizing channel is a structure with a gradually increasing inner cavity, the fluid pressure is further reduced, and the stable flow of the fluid can be maintained, and then reaches the position of the detection component, the power supply 5 provides current to the excitation coil 8, the excitation current flows through the coil to generate a magnetic field, the magnetic field acts on the conductive medium to form an induced potential, and finally a voltage signal proportional to the flow velocity is obtained from the electrode 7. The power supply is EX, the electromagnetic induction intensity is B, the pipeline diameter is D, and the flow velocity is calculated according to EX=BDv.
[0020] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An electromagnetic flowmeter, comprising a detection pipe (2), characterized in that: The detection pipeline (2) is equipped with a detection component; A rectifier and flow stabilizer (3), the rectifier and flow stabilizer (3) being installed on one side of the interior of the detection pipeline (2), and the rectifier and flow stabilizer (3) comprising a pressurizing channel (31), a rectifier channel (32) and a flow stabilizing channel (33) which are arranged in sequence, and a flow stabilizing fan (34) is rotatably installed at one end of the interior of the flow stabilizing channel (33) close to the rectifier channel (32) via a bearing.
2. An electromagnetic flowmeter according to claim 1, characterized in that: The pressurizing channel (31) is provided with dense, gradually decreasing flow holes (311) inside, the rectifying channel (32) is provided with flat holes (321) connected to the gradually decreasing flow holes (311) inside, and the stabilizing channel (33) is provided with gradually increasing flow holes (331) connected to the rectifying channel (32) inside.
3. The electromagnetic flowmeter according to claim 1, characterized in that: The detection assembly comprises: a mounting shell (6) is installed on the outside of the detection pipeline (2) on a side close to the steady flow channel (33), an excitation coil (8) is installed on the upper and lower sides of the inside of the mounting shell (6), and electrodes (7) are installed on the front and rear sides of the mounting shell (6).
4. An electromagnetic flowmeter according to claim 3, characterized in that: A power source (5) for supplying power to the electrode (7) is provided on the top surface of the mounting housing (6).
5. An electromagnetic flowmeter according to claim 4, characterized in that: The front surface of the power supply (5) is provided with a display screen (4).