Electromagnetic flowmeter capable of preventing installation interference
By introducing phase change heat dissipation, cellular rectification, and damping vibration reduction modules into the electromagnetic flowmeter, the problem of insufficient anti-interference capability of the electromagnetic flowmeter in complex environments is solved, and higher measurement accuracy and reliability are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LEITAI AUTOMATION INSTR ENG CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-05-12
AI Technical Summary
Existing electromagnetic flowmeters have limited anti-interference capabilities in complex and ever-changing industrial environments, which affects measurement accuracy and reliability.
Phase change heat dissipation module, honeycomb rectification module and damping vibration reduction module are adopted to provide multi-dimensional anti-interference for high temperature, fluid turbulence disturbance and pipeline mechanical vibration respectively. The measurement stability is improved by phase change heat storage, honeycomb flow guidance and silicone oil damping energy dissipation.
It operates stably in complex industrial environments, significantly improving measurement accuracy and reliability, reducing the impact of interference on measurement results, and ensuring the accuracy of flow data.
Smart Images
Figure CN224231024U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electromagnetic flowmeter technology, and in particular to an electromagnetic flowmeter with anti-interference installation. Background Technology
[0002] Electromagnetic flow meters are flow measurement instruments that work based on Faraday's law of electromagnetic induction. Their core principle is that when a conductive fluid flows through a magnetic field, it generates an induced voltage that is proportional to the flow velocity. The flow rate is accurately calculated by measuring this voltage value.
[0003] However, existing electromagnetic flowmeters with anti-interference installation have the following drawbacks: in the actual working environment of the flowmeter, there are interferences caused by high temperature working scenarios due to temperature or operation, fluid turbulence disturbances due to the installation location, and mechanical vibrations of pipelines due to production. At present, most electromagnetic flowmeters on the market have relatively simple anti-interference capabilities and cannot effectively cope with complex and ever-changing industrial environments. These limitations in anti-interference affect their measurement accuracy and reliability. Utility Model Content
[0004] Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an electromagnetic flowmeter with anti-interference installation, which solves the technical problem that most electromagnetic flowmeters have relatively simple anti-interference capabilities, making it difficult to effectively cope with complex and ever-changing industrial environments, and that these limitations in anti-interference affect their measurement accuracy and reliability.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An electromagnetic flowmeter with anti-interference installation includes an electromagnetic flowmeter body, a flow pipe, and a first mounting flange. The electromagnetic flowmeter body is fixedly mounted on the flow pipe, and the first mounting flange is fixedly mounted on both ends of the flow pipe. The electromagnetic flowmeter body is provided with replaceable modules, which include a phase change heat dissipation module, a honeycomb rectification module, and a damping vibration reduction module. Each of the phase change heat dissipation module, honeycomb rectification module, and damping vibration reduction module is provided with a second mounting flange. The phase change heat dissipation module, honeycomb rectification module, and damping vibration reduction module are fixedly connected to the first mounting flange through the second mounting flange. The phase change heat dissipation module integrates a ceramic heat insulation layer, a phase change heat storage cavity, and a vacuum heat pipe. The ceramic heat insulation layer is fixedly mounted on the side end of the second mounting flange. The phase change heat storage cavity is located between the vacuum heat pipe and the ceramic heat insulation layer. A sealing ring plate is fixedly mounted on the side end of the ceramic heat insulation layer. The honeycomb rectification module integrates a first pipe and a honeycomb guide plate. The first pipe is fixedly mounted on the side end of the second mounting flange, and the honeycomb guide plate is fixedly mounted on the inner wall of the first pipe.
[0008] Preferably, the damping and vibration reduction module integrates a second pipe, and a silicone oil damping cavity is provided between the second pipe and the second mounting flange.
[0009] Preferably, a sealing bellows is fixedly installed between the second pipe and the second mounting flange.
[0010] Compared with the prior art, the present invention has the following beneficial effects:
[0011] I. This device incorporates three replaceable phase-change heat dissipation modules, a honeycomb rectifier module, and a damping vibration reduction module, respectively addressing high temperature, fluid turbulence disturbances, and pipeline mechanical vibration interference, achieving multi-dimensional anti-interference capabilities. Compared to traditional electromagnetic flowmeters with only single anti-interference features, this design can operate more stably in complex and variable industrial environments, effectively reducing the impact of various interferences on measurement results, significantly improving measurement accuracy and reliability, ensuring accurate flow data in industrial production processes, and providing strong support for precise control of the production process. Attached Figure Description
[0012] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0013] Figure 1 This is a structural diagram of the electromagnetic flowmeter body of this utility model;
[0014] Figure 2 This is a structural diagram of the flow pipeline of this utility model;
[0015] Figure 3 This is a structural diagram of the phase change heat dissipation module of this utility model;
[0016] Figure 4 This is a structural diagram of the cellular rectifier module of this utility model;
[0017] Figure 5 This is a structural diagram of the damping and vibration reduction module of this utility model;
[0018] Figure 6 This is a cross-sectional structural diagram of the damping vibration reduction module of this utility model.
[0019] Legend: 1. Electromagnetic flowmeter body; 11. Flow pipe; 12. First mounting flange; 13. Replaceable module; 14. Second mounting flange; 2. Phase change heat dissipation module; 21. Ceramic insulation layer; 22. Phase change heat storage cavity; 23. Vacuum heat pipe; 24. Sealing ring plate; 3. Honeycomb rectifier module; 31. First pipe; 32. Honeycomb guide plate; 4. Damping vibration reduction module; 41. Second pipe; 42. Silicone oil damping cavity; 43. Sealed bellows. Detailed Implementation
[0020] This application provides an electromagnetic flowmeter with anti-interference installation, effectively solving the technical problem that most electromagnetic flowmeters have limited anti-interference capabilities, making them difficult to cope with complex and changing industrial environments, and thus affecting their measurement accuracy and reliability. Specifically:
[0021] The electromagnetic flowmeter body 1 is fixedly installed on the flow pipe 11. First mounting flanges 12 are fixedly installed on both ends of the flow pipe 11. The electromagnetic flowmeter body 1 is equipped with a replaceable module 13, which includes a phase change heat dissipation module 2, a honeycomb rectifier module 3, and a damping vibration reduction module 4. Second mounting flanges 14 are provided on each of the phase change heat dissipation module 2, honeycomb rectifier module 3, and damping vibration reduction module 4. These modules are fixedly connected to the first mounting flanges 12 via the second mounting flanges 14. The phase change heat dissipation module 2 integrates a ceramic insulation layer 21, a phase change heat storage cavity 22, and a vacuum heat pipe 23. The ceramic insulation layer 21 is fixedly installed on the side end of the second mounting flange 14, and the phase change heat storage cavity 22 is located at... Between the vacuum heat pipe 23 and the ceramic insulation layer 21, a sealing ring plate 24 is fixedly installed at the side end of the ceramic insulation layer 21. When the electromagnetic flowmeter body 1 is working, in response to high-temperature thermal interference, when the ambient temperature is >80℃, the copper resistance value of the excitation coil increases rapidly, causing the magnetic field strength to drift. At the same time, high temperature will accelerate the aging of the seals, and the insulation will decrease, causing signal leakage. The vacuum heat pipe 23 array uses the internal working fluid phase change to achieve ultra-efficient heat conduction and quickly dissipate the heat from the sensor. The phase change heat storage cavity 22 is embedded with a high melting point alloy material, which absorbs heat through solid-liquid phase change. The outer ceramic insulation layer 21 can effectively block external heat radiation. The ceramic insulation layer 21, the phase change heat storage cavity 22 and the vacuum heat pipe 23 work together to ensure efficient heat dissipation of the sensor under high temperature operation and avoid the formation of thermal drift.
[0022] The honeycomb rectifier module 3 integrates a first pipe 31 and a honeycomb guide plate 32. The first pipe 31 is fixedly installed on the side end of the second mounting flange 14, and the honeycomb guide plate 32 is fixedly installed on the inner wall of the first pipe 31. When the electromagnetic flowmeter body 1 is working, in response to fluid turbulence disturbance, when the electromagnetic flowmeter body 1 is installed downstream of a bend or valve, the fluid velocity distribution is distorted, generating low-frequency pulsating noise on the electrode surface. This turbulence disturbance will cause the instantaneous flow reading to jump, which may trigger false alarms, especially under low flow conditions. The honeycomb guide plate 32 is set inside the first pipe 31. The honeycomb guide plate 32 adopts a titanium alloy honeycomb structure with a pore size of 0.2 times the pipe diameter (0.2D). Through dense hexagonal channels, it decomposes large-scale eddies into micro-scale turbulence, improves the uniformity of flow velocity distribution, and attenuates turbulence intensity, avoiding the instantaneous flow reading jump and false alarms that occur when the electromagnetic flowmeter body 1 is working.
[0023] The damping and vibration reduction module 4 integrates a second pipe 41. A silicone oil damping cavity 42 is provided between the second pipe 41 and the second mounting flange 14. A sealing bellows 43 is fixedly installed between the second pipe 41 and the second mounting flange 14. When the electromagnetic flowmeter body 1 is working, in response to the interference of mechanical vibration of the pipeline, when the pipeline vibration acceleration exceeds 0.1g, the internal electrodes of the electromagnetic flowmeter body 1 undergo high-frequency micro-friction with the fluid medium, generating millivolt-level electrical noise. At the same time, lateral vibration causes mechanical deformation at the connection between the flowmeter flange and the pipeline. Misalignment deformation will destroy the symmetry of the flow field inside the measuring tube. The silicone oil damping cavity 42 is set between the second pipe 41 and the second mounting flange 14. The high viscosity characteristics of silicone oil are used to convert high-frequency vibration energy into heat energy dissipation, thereby achieving vibration reduction. The sealing bellows 43 compensation structure compensates for the deformation caused by vibration reduction through axial free expansion and contraction, ensuring the sealing of the second pipe 41 and the second mounting flange 14. The silicone oil damping cavity 42 and the second mounting flange 14 work together to effectively deal with the interference of mechanical vibration of the pipeline, while avoiding the risk of flange stress deformation.
[0024] Example 1: As Figure 1 , Figure 2 and Figure 3 As shown, when the electromagnetic flowmeter body 1 is working, in response to high-temperature thermal interference, when the ambient temperature is >80℃, the copper resistance of the excitation coil increases rapidly, causing the magnetic field strength to drift. At the same time, high temperature will accelerate the aging of the seals, and the insulation will decrease, causing signal leakage. The vacuum heat pipe 23 array uses the internal working fluid phase change to achieve ultra-efficient heat conduction, quickly dissipating the heat from the sensor. The phase change heat storage cavity 22 is embedded with a high melting point alloy material, which absorbs heat through solid-liquid phase change. The outer ceramic insulation layer 21 can effectively block external heat radiation. The ceramic insulation layer 21, the phase change heat storage cavity 22 and the vacuum heat pipe 23 work together to ensure efficient heat dissipation of the sensor under high temperature operation and avoid the formation of thermal drift.
[0025] Example 2: Figure 1 , Figure 2 and Figure 4 As shown, when the electromagnetic flowmeter body 1 is working, in response to fluid turbulence disturbances, when the electromagnetic flowmeter body 1 is installed downstream of a bend or valve, the fluid velocity distribution is distorted, generating low-frequency pulsating noise on the electrode surface. This turbulence disturbance can cause instantaneous flow rate readings to jump, especially under low flow conditions, which may trigger false alarms. A honeycomb guide plate 32 is installed inside the first pipe 31. The honeycomb guide plate 32 adopts a titanium alloy honeycomb structure with a pore size of 0.2 times the pipe diameter (0.2D). Through dense hexagonal channels, it decomposes large-scale eddies into micro-scale turbulence, improves the uniformity of flow velocity distribution, and attenuates turbulence intensity, thus avoiding instantaneous flow rate reading jumps and false alarms that occur when the electromagnetic flowmeter body 1 is working.
[0026] Example 3: As Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, when the electromagnetic flowmeter body 1 is working, in response to the interference of pipeline mechanical vibration, when the pipeline vibration acceleration exceeds 0.1g, the internal electrodes of the electromagnetic flowmeter body 1 undergo high-frequency micro-friction with the fluid medium, generating millivolt-level electrical noise. At the same time, lateral vibration causes mechanical deformation at the connection between the flowmeter flange and the pipeline. Misalignment deformation will disrupt the symmetry of the flow field inside the measuring tube. A silicone oil damping cavity 42 is set between the second pipeline 41 and the second mounting flange 14. The high viscosity characteristics of silicone oil are used to convert high-frequency vibration energy into heat energy dissipation, thereby achieving vibration reduction. The sealing bellows 43 compensation structure compensates for the deformation caused by vibration reduction through axial free expansion and contraction, ensuring the sealing of the second pipeline 41 and the second mounting flange 14. The silicone oil damping cavity 42 and the second mounting flange 14 work together to effectively deal with pipeline mechanical vibration interference, while avoiding the risk of flange stress deformation.
[0027] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. An electromagnetic flowmeter with anti-interference installation, comprising an electromagnetic flowmeter body (1), a flow pipe (11), and a first mounting flange (12), wherein the electromagnetic flowmeter body (1) is fixedly installed on the flow pipe (11), and the first mounting flange (12) is fixedly installed on both ends of the flow pipe (11), characterized in that, The electromagnetic flowmeter body (1) is provided with a replaceable module (13). The replaceable module (13) includes a phase change heat dissipation module (2), a honeycomb rectifier module (3) and a damping vibration reduction module (4). The phase change heat dissipation module (2), the honeycomb rectifier module (3) and the damping vibration reduction module (4) are all provided with a second mounting flange (14). The phase change heat dissipation module (2), the honeycomb rectifier module (3) and the damping vibration reduction module (4) are all fixedly connected through the second mounting flange (14) and the first mounting flange (12).
2. The electromagnetic flowmeter with anti-interference installation as described in claim 1, characterized in that: The phase change heat dissipation module (2) integrates a ceramic heat insulation layer (21), a phase change heat storage cavity (22), and a vacuum heat pipe (23). The ceramic heat insulation layer (21) is fixedly installed on the side end of the second mounting flange (14).
3. The electromagnetic flowmeter with anti-interference installation as described in claim 2, characterized in that: The phase change heat storage cavity (22) is located between the vacuum heat pipe (23) and the ceramic heat insulation layer (21), and a sealing ring plate (24) is fixedly installed on the side end of the ceramic heat insulation layer (21).
4. The electromagnetic flowmeter with anti-interference installation as described in claim 1, characterized in that: The cellular rectifier module (3) integrates a first pipe (31) and a cellular guide plate (32). The first pipe (31) is fixedly installed on the side end of the second mounting flange (14), and the cellular guide plate (32) is fixedly installed on the inner side wall of the first pipe (31).
5. An electromagnetic flowmeter with anti-interference installation as described in claim 1, characterized in that: The damping and vibration reduction module (4) is integrated with a second pipe (41), and a silicone oil damping cavity (42) is provided between the second pipe (41) and the second mounting flange (14).
6. The electromagnetic flowmeter with anti-interference installation as described in claim 5, characterized in that: A sealing bellows (43) is fixedly installed between the second pipe (41) and the second mounting flange (14).