Magnetic induction flow measurement method and measuring instrument
By introducing an automatic electrolyte descaling system into the magnetic induction flow meter, the measurement error caused by scaling on the inner wall is solved, achieving automated descaling without disassembly and cleaning, thus reducing maintenance costs and time consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN COLIY TECH DEV CO LTD
- Filing Date
- 2022-10-31
- Publication Date
- 2026-05-12
AI Technical Summary
Existing magnetic induction flow meters are prone to scaling on their inner walls after prolonged use, causing impurities to adhere to the electrodes, affecting measurement accuracy, and requiring disassembly and cleaning, which is time-consuming and costly.
A magnetic induction flow meter was designed, comprising a measuring chamber, a measuring instrument module, a descaling circuit module, and a main controller. It removes scale layers through an electrolyte and achieves automatic descaling by utilizing selectable pathways at the electrode terminals and an electrolyte pump, thus avoiding disassembly and cleaning.
It enables the removal of scale buildup on the inner wall of the magnetic induction flow meter without disassembling it, reducing cleaning and maintenance costs, ensuring normal operation, and avoiding measurement errors caused by scale buildup.
Smart Images
Figure CN115683247B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of magnetic induction flow measurement instruments for measuring the flow rate of conductive media, and particularly to a magnetic induction flow measurement method and measuring instrument. Background Technology
[0002] Magnetic induction flowmeters are a new type of flow measurement instrument that developed rapidly in the 1950s and 1960s with the advancement of electronic technology. Magnetic induction flowmeters utilize the principle of electromagnetic induction, measuring the flow rate of a conductive fluid based on the electromotive force induced when the fluid passes through an external magnetic field. The main components of a magnetic induction flowmeter include a magnetic circuit system, a measuring conduit, electrodes, a housing, a lining, and a converter.
[0003] In existing magnetic induction flow meters, after prolonged flow measurement, impurities in the pipeline can adhere to the electrodes, thus affecting the flow measurement results. Summary of the Invention
[0004] The applicant's research revealed that existing magnetic induction flow meters are prone to scaling on their inner walls after prolonged flow measurement. This scaling can cause impurities to adhere to the electrodes, preventing the flow meter from functioning properly. The scaling layer on the inner wall of the flow meter requires disassembly, cleaning, and reinstallation, which consumes more time.
[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a magnetic induction flow measurement method and measuring instrument, which aims to remove the scale layer attached to the inner wall of the magnetic induction flow measuring instrument without disassembling it, thereby avoiding affecting the normal operation of the magnetic induction flow measuring instrument.
[0006] To achieve the above objectives, the first aspect of the present invention discloses a magnetic induction flow meter, the magnetic induction flow meter comprising: a measuring chamber, a measuring instrument module, a descaling circuit module, an input-end electrically controlled valve and an output-end electrically controlled valve connected to both ends of the measuring chamber; the measuring instrument module comprises: an excitation coil and electrode terminals; the excitation coil is used to provide a magnetic field to the measuring chamber;
[0007] The electrode terminal outside the measuring chamber includes two selectable pathways; the two selectable pathways include: a first selectable pathway connected to the measuring instrument module and a second selectable pathway connected to the descaling circuit module; the first selectable pathway is used to form a conductive path with the fluid inside the measuring chamber to measure a voltage signal; the second selectable pathway is used to electrolytically remove the scale layer on the electrode terminal using the electrolyte inside the measuring chamber.
[0008] The measuring chamber is connected to the input-end solenoid valve via a first branch pipe, on which an electrolyte valve, an electrolyte pump, and an electrolyte tank are connected in sequence; the measuring instrument is connected to the output-end solenoid valve via a second branch pipe, on which a waste valve and a waste tank are connected in sequence.
[0009] The magnetic induction flow meter also includes a main controller, which includes: a time point response module, an electrolyte introduction module, a first flow value measurement module, a first flow value judgment module, an electrostatic descaling module, a descaling operation shutdown module, and a fluid recovery measurement module.
[0010] The time-point response module is used to close the input and output solenoid valves of the magnetic induction flow meter in response to the descaling time point being reached.
[0011] An electrolyte module is introduced to open the electrolyte valve and waste valve of the magnetic induction flow meter, start the electrolyte pump of the magnetic induction flow meter and continuously discharge electrolyte into the measuring chamber of the magnetic induction flow meter at a first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank;
[0012] The first flow rate measurement module is used to control the magnetic induction flow meter to measure the first flow rate after the electrolyte is constantly discharged from the measuring chamber or the electrolyte pump has been working for a preset first time.
[0013] The first flow rate value judgment module is used to determine whether the first flow rate value is within the first preset flow rate value range. If it is within the first preset flow rate value range, the electrode terminal is qualified and no descaling operation is required. Otherwise, the descaling operation is performed by the energized descaling module.
[0014] The energized descaling module is used to shut down the electrolyte pump, the electrolyte valve, and the waste valve, and to turn on the descaling circuit module and continuously energize the electrode terminals to perform the descaling operation.
[0015] The descaling operation shutdown module is used to shut down the descaling circuit module and open the waste valve and the input terminal electric control valve after the descaling operation is completed, and to discharge the electrolyte in the measuring chamber into the waste tank by introducing the fluid.
[0016] The fluid recovery measurement module is used to open the output-end electrically controlled valve, close the waste valve, and restore the flow measurement of the fluid.
[0017] Optionally, the magnetic induction flow meter further includes: a descaling cycle setting module and a descaling time point acquisition module, wherein the descaling cycle setting module and the descaling time point acquisition module operate before the time point response module operates;
[0018] The descaling cycle setting module is used to set the descaling cycle according to the duration of scale formation on the electrode.
[0019] The descaling time point acquisition module is used to acquire the descaling time point according to the set descaling cycle.
[0020] Optionally, the electrostatic descaling module includes: a second flow rate acquisition module and a second flow rate judgment module;
[0021] The second flow rate acquisition module is used to obtain a second flow rate value based on the first voltage signal detected by the electrode terminal;
[0022] The second flow rate determination module is used to determine whether the second flow rate of the electrode terminal after being energized is within the range of the first preset flow rate. If the second flow rate is within the range of the first preset flow rate, the descaling circuit module is turned off; otherwise, the descaling circuit module remains on.
[0023] Optionally, the descaling operation shutdown module includes: the third flow rate acquisition module and the third flow rate judgment module;
[0024] The third flow rate acquisition module is used to obtain a third flow rate value based on the second signal voltage detected by the electrode;
[0025] The third flow rate value determination module is used to determine whether the third flow rate value is within the range of the second preset flow rate value. If the third flow rate value is within the range of the second preset flow rate value, the fluid discharge into the waste tank is stopped; otherwise, the fluid continues to be discharged into the waste tank.
[0026] Optionally, the magnetic field provided by the excitation coil is a uniformly distributed constant magnetic field; the input-end electrically controlled valve, the output-end electrically controlled valve, the electrolyte valve, and the waste valve are controlled by an electronic control device.
[0027] The second aspect of this invention discloses a magnetic induction flow measurement method, the method comprising: a detection operation step and a descaling operation step;
[0028] The detection process includes:
[0029] Step S1: In response to the descaling time point being reached, close the input and output solenoid valves of the magnetic induction flow meter.
[0030] Step S2: Open the electrolyte valve and waste valve of the magnetic induction flow meter, start the electrolyte pump of the magnetic induction flow meter and continuously discharge electrolyte into the measuring chamber of the magnetic induction flow meter at the first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank;
[0031] Step S3: After the electrolyte is discharged from the measuring chamber at a constant rate or the electrolyte pump continues to work for a preset first time, control the magnetic induction flow meter to measure the first flow value.
[0032] Step S4: Determine whether the first flow rate value is within the range of the first preset flow rate value. If it is within the range of the first preset flow rate value, the electrode terminal is qualified and no descaling operation is required. Otherwise, the descaling operation step is performed.
[0033] The descaling process includes the following steps:
[0034] Step S5: Turn off the electrolyte pump, the electrolyte valve, and the waste valve; turn on the descaling circuit module of the magnetic induction flow meter and continuously energize the electrode terminals to perform the descaling operation.
[0035] Step S6: After the descaling operation is completed, turn off the descaling circuit module, open the waste valve and the input terminal electric control valve, and discharge the electrolyte in the measuring chamber into the waste tank by introducing the fluid.
[0036] Step S7: Open the output-end solenoid valve, close the waste valve, and resume flow measurement of the fluid.
[0037] Optionally, prior to step S1, the method further includes:
[0038] Step A: Set the descaling cycle according to the duration of electrode scaling;
[0039] Step B: Obtain the descaling time point according to the set descaling cycle.
[0040] Optionally, step S5 includes:
[0041] Step S501: Obtain the second flow rate value based on the first voltage signal detected by the electrode terminal;
[0042] Step S502: Determine whether the second flow rate value of the electrode terminal after being energized is within the range of the first preset flow rate value. If the second flow rate value is within the range of the first preset flow rate value, then turn off the descaling circuit module; otherwise, keep the descaling circuit module on.
[0043] Optionally, step S6 includes:
[0044] Step S601: Obtain the third flow rate value based on the second signal voltage detected by the electrode;
[0045] Step S602: Determine whether the third flow rate value is within the range of the second preset flow rate value. If the third flow rate value is within the range of the second preset flow rate value, stop the fluid from being discharged into the waste tank; otherwise, the fluid continues to be discharged into the waste tank.
[0046] Optionally, the magnetic field provided by the excitation coil is a uniformly distributed constant magnetic field; the input-end electrically controlled valve, the output-end electrically controlled valve, the electrolyte valve, and the waste valve are controlled by an electronic control device.
[0047] The beneficial effects of this invention are as follows: 1. In response to the descaling time point being reached, this invention closes the input and output solenoid valves of the magnetic induction flow meter; opens the electrolyte valve and waste valve of the magnetic induction flow meter; starts the electrolyte pump of the magnetic induction flow meter and continuously discharges electrolyte into the measuring chamber of the magnetic induction flow meter at a first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank; after the measuring chamber discharges electrolyte at a constant rate or the electrolyte pump continues to work for a preset first time, the magnetic induction flow meter is controlled to measure a first flow value; it is determined whether the first flow value is within the first preset flow value range. If it is within the first preset flow value range, the electrode terminals are qualified and no descaling operation is required; otherwise, the descaling operation step is performed. This embodiment of the invention periodically descales the measuring chamber, reducing the cleaning and maintenance costs of the magnetic induction flow meter and preventing the magnetic induction flow meter from failing to work properly due to scale buildup in the measuring chamber. 2. The magnetic induction flow meter of this invention avoids disassembly, cleaning, and reinstallation during the descaling process, thereby avoiding the consumption of more time. In summary, this invention achieves the removal of scale buildup on the inner wall of the magnetic induction flow meter without disassembling it, thus avoiding interference with the normal operation of the magnetic induction flow meter. Attached Figure Description
[0048] Figure 1 This is a schematic flowchart of a magnetic induction flow measurement method provided in a specific embodiment of the present invention;
[0049] Figure 2 This is a schematic diagram of the structure of a magnetic induction flow meter provided in a specific embodiment of the present invention. Detailed Implementation
[0050] This invention discloses a magnetic induction flow measurement method and instrument. Those skilled in the art can refer to the content of this document and appropriately modify the technical details to implement it. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The method and application of this invention have been described through preferred embodiments. Those skilled in the art can obviously make modifications or appropriate changes and combinations to the methods and applications described herein without departing from the content, spirit, and scope of this invention to implement and apply the technology of this invention.
[0051] The applicant's research revealed that existing magnetic induction flow meters are prone to scaling on their inner walls after prolonged flow measurement. This scaling can cause impurities to adhere to the electrodes, preventing the flow meter from functioning properly. The scaling layer on the inner wall of the flow meter requires disassembly, cleaning, and reinstallation, which consumes more time.
[0052] Therefore, embodiments of the present invention provide a magnetic induction flow meter, such as Figure 2 As shown, the magnetic induction flow meter includes: a measuring chamber, a measuring instrument module, a descaling circuit module, an input solenoid valve and an output solenoid valve connected to both ends of the measuring chamber; the measuring instrument module includes: an excitation coil and electrode terminals; the excitation coil is used to provide a magnetic field to the measuring chamber.
[0053] The electrode terminals outside the measuring chamber include two selectable pathways; the two selectable pathways include: a first selectable pathway connected to the measuring instrument module and a second selectable pathway connected to the descaling circuit module; the first selectable pathway is used to form a conductive path with the fluid in the measuring chamber to measure the voltage signal; the second selectable pathway is used to electrolyze and remove the scale layer on the electrode terminals using the electrolyte in the measuring chamber.
[0054] The measuring chamber is connected to the first branch pipe via a connection to the input solenoid valve. The first branch pipe is connected in sequence to the electrolyte valve, the electrolyte pump, and the electrolyte tank. The measuring instrument is connected to the second branch pipe via a connection to the output solenoid valve. The second branch pipe is connected in sequence to the waste valve and the waste tank.
[0055] The magnetic induction flow meter also includes a main controller, which includes: a time point response module 101, an electrolyte introduction module 102, a first flow value measurement module 103, a first flow value judgment module 104, an electric descaling module 105, a descaling operation shutdown module 106, and a fluid recovery measurement module 107.
[0056] The time point response module 101 is used to close the input and output solenoid valves of the magnetic induction flow meter in response to the descaling time point being reached.
[0057] Electrolyte module 102 is used to open the electrolyte valve and waste valve of the magnetic induction flow meter, start the electrolyte pump of the magnetic induction flow meter and continuously discharge electrolyte into the measuring chamber of the magnetic induction flow meter at the first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank.
[0058] The first flow rate measurement module 103 is used to control the magnetic induction flow meter to measure the first flow rate after the electrolyte is constantly discharged from the chamber to be measured or the electrolyte pump continues to work for a preset first time.
[0059] The first flow rate value judgment module 104 is used to determine whether the first flow rate value is within the range of the first preset flow rate value. If it is within the range of the first preset flow rate value, the electrode terminal is qualified and no descaling operation is required. Otherwise, the descaling operation is performed by the energized descaling module 105.
[0060] The energized descaling module 105 is used to shut down the electrolyte pump, electrolyte valve, and waste valve, and to turn on the descaling circuit module and continuously energize the electrode terminals to perform the descaling operation.
[0061] The descaling operation shutdown module 106 is used to shut down the descaling circuit module and open the waste valve and input terminal electric control valve after the descaling operation is completed, so as to discharge the electrolyte in the measuring chamber to the waste tank by introducing fluid.
[0062] The fluid measurement module 107 is used to open the output solenoid valve, close the waste valve, and restore the flow measurement of the fluid.
[0063] Optionally, the magnetic induction flow meter also includes: a descaling cycle setting module and a descaling time point acquisition module, which operate before the time point response module 101 operates.
[0064] The descaling cycle setting module is used to set the descaling cycle based on the duration of electrode scaling.
[0065] The descaling time point acquisition module is used to acquire descaling time points according to the set descaling cycle.
[0066] Optionally, the electrostatic descaling module 105 includes: a second flow rate acquisition module and a second flow rate judgment module;
[0067] The second flow rate acquisition module is used to obtain the second flow rate value based on the first voltage signal detected by the electrode terminals;
[0068] The second flow rate determination module is used to determine whether the second flow rate of the electrode terminal after being energized is within the range of the first preset flow rate. If the second flow rate is within the range of the first preset flow rate, the descaling circuit module is turned off; otherwise, the descaling circuit module remains on.
[0069] Optionally, the descaling operation shutdown module 106 includes: a third flow value acquisition module and a third flow value judgment module;
[0070] The third flow rate acquisition module is used to obtain the third flow rate value based on the second signal voltage detected by the electrode;
[0071] The third flow rate value judgment module is used to determine whether the third flow rate value is within the range of the second preset flow rate value. If the third flow rate value is within the range of the second preset flow rate value, the fluid discharge into the waste tank is stopped; otherwise, the fluid continues to be discharged into the waste tank.
[0072] Optionally, the magnetic field provided by the excitation coil is a uniformly distributed constant magnetic field; the input-end solenoid valve, output-end solenoid valve, electrolyte valve, and waste valve are controlled by an electronic control device.
[0073] In summary, the method embodiments of the present invention can remove the scale layer attached to the inner wall of the magnetic induction flow meter without disassembling the magnetic induction flow meter, thus avoiding affecting the normal operation of the magnetic induction flow meter.
[0074] Based on the magnetic induction flow meter provided above, this embodiment of the invention also provides a magnetic induction flow measurement method, the method including: a detection operation step and a descaling operation step;
[0075] The testing process includes:
[0076] Step S1: In response to the descaling time point being reached, close the input and output solenoid valves of the magnetic induction flow meter.
[0077] Step S2: Open the electrolyte valve and waste valve of the magnetic induction flow meter, start the electrolyte pump of the magnetic induction flow meter and continuously discharge electrolyte into the measuring chamber of the magnetic induction flow meter at the first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank.
[0078] Step S3: After the electrolyte is discharged from the measuring chamber at a constant rate or the electrolyte pump continues to work for a preset first time, the magnetic induction flow meter is controlled to measure the first flow value.
[0079] Step S4: Determine whether the first flow rate value is within the range of the first preset flow rate value. If it is within the range of the first preset flow rate value, the electrode terminal is qualified and no descaling operation is required. Otherwise, the descaling operation step is performed.
[0080] Descaling procedures include:
[0081] Step S5: Turn off the electrolyte pump, electrolyte valve, and waste valve, turn on the descaling circuit module of the magnetic induction flow meter and continuously power the electrode terminals to perform the descaling operation;
[0082] Step S6: After the descaling operation is completed, turn off the descaling circuit module, open the waste valve and the input terminal electric control valve, and use the fluid to discharge the electrolyte in the measuring chamber into the waste tank.
[0083] Step S7: Open the output solenoid valve, close the waste valve, and resume flow measurement of the fluid.
[0084] Optionally, before step S1, the method further includes:
[0085] Step A: Set the descaling cycle according to the duration of electrode scaling;
[0086] Step B: Obtain the descaling time point according to the set descaling cycle.
[0087] Optionally, step S5 includes:
[0088] Step S501: Obtain the second flow rate value based on the first voltage signal detected by the electrode terminals;
[0089] Step S502: Determine whether the second flow value of the electrode terminal after being energized is within the range of the first preset flow value. If the second flow value is within the range of the first preset flow value, then turn off the descaling circuit module; otherwise, keep the descaling circuit module on.
[0090] Optionally, step S6 includes:
[0091] Step S601: Obtain the third flow rate value based on the second signal voltage detected by the electrode;
[0092] Step S602: Determine whether the third flow rate value is within the range of the second preset flow rate value. If the third flow rate value is within the range of the second preset flow rate value, stop the fluid from being discharged into the waste tank; otherwise, continue to discharge the fluid into the waste tank.
[0093] Optionally, the magnetic field provided by the excitation coil is a uniformly distributed constant magnetic field; the input-end solenoid valve, output-end solenoid valve, electrolyte valve, and waste valve are controlled by an electronic control device.
[0094] In conjunction with the above embodiments, this invention, in response to the descaling time point being reached, closes the input and output electrically controlled valves of the magnetic induction flow meter; opens the electrolyte valve and waste valve of the magnetic induction flow meter; starts the electrolyte pump of the magnetic induction flow meter and continuously discharges electrolyte into the measuring chamber of the magnetic induction flow meter at a first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank; after the measuring chamber discharges electrolyte at a constant rate or the electrolyte pump continues to work for a preset first time, the magnetic induction flow meter is controlled to measure a first flow value; it is determined whether the first flow value is within the first preset flow value range. If it is within the first preset flow value range, the electrode terminals are qualified and no descaling operation is required; otherwise, the descaling operation step is performed. This invention regularly descales the measuring chamber, reducing the cleaning and maintenance costs of the magnetic induction flow meter and preventing the magnetic induction flow meter from malfunctioning due to scale buildup in the measuring chamber. The magnetic induction flow meter of this invention avoids disassembly, cleaning, and reinstallation during the descaling process, thereby avoiding more time consumption. In summary, the embodiments of the present invention achieve the removal of the scale layer adhering to the inner wall of the magnetic induction flow meter without disassembling the magnetic induction flow meter, thus avoiding affecting the normal operation of the magnetic induction flow meter.
[0095] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0096] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.
[0097] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.
Claims
1. A magnetic induction flow meter, characterized in that, The magnetic induction flow meter includes: a measuring chamber, a measuring instrument module, a descaling circuit module, an input-end electrically controlled valve and an output-end electrically controlled valve connected to both ends of the measuring chamber; the measuring instrument module includes: an excitation coil and electrode terminals; the excitation coil is used to provide a magnetic field to the measuring chamber. The electrode terminal outside the measuring chamber includes two selectable pathways; the two selectable pathways include: a first selectable pathway connected to the measuring instrument module and a second selectable pathway connected to the descaling circuit module; the first selectable pathway is used to form a conductive path with the fluid inside the measuring chamber to measure a voltage signal; the second selectable pathway is used to electrolytically remove the scale layer on the electrode terminal using the electrolyte inside the measuring chamber. The measuring chamber is connected to the input-end solenoid valve via a first branch pipe, on which an electrolyte valve, an electrolyte pump, and an electrolyte tank are connected in sequence; the measuring instrument is connected to the output-end solenoid valve via a second branch pipe, on which a waste valve and a waste tank are connected in sequence. The magnetic induction flow meter also includes a main controller, which includes: a time point response module, an electrolyte introduction module, a first flow value measurement module, a first flow value judgment module, an electrostatic descaling module, a descaling operation shutdown module, and a fluid recovery measurement module. The time-point response module is used to close the input and output solenoid valves of the magnetic induction flow meter in response to the descaling time point being reached. The electrolyte inlet module is used to open the electrolyte valve and waste valve of the magnetic induction flow meter, start the electrolyte pump of the magnetic induction flow meter and continuously discharge electrolyte into the measuring chamber of the magnetic induction flow meter at a first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank; The first flow rate measurement module is used to control the magnetic induction flow meter to measure the first flow rate after the electrolyte is discharged from the measuring chamber at a constant rate or the electrolyte pump has been working continuously for a preset first time. The first flow rate value judgment module is used to determine whether the first flow rate value is within the first preset flow rate value range. If it is within the first preset flow rate value range, the electrode terminal is qualified and no descaling operation is required. Otherwise, the descaling operation is performed by the energized descaling module. The energized descaling module is used to shut down the electrolyte pump, the electrolyte valve, and the waste valve, and to turn on the descaling circuit module and continuously energize the electrode terminals to perform the descaling operation. The descaling operation shutdown module is used to shut down the descaling circuit module and open the waste valve and the input terminal electric control valve after the descaling operation is completed, and to discharge the electrolyte in the measuring chamber into the waste tank by introducing the fluid. The fluid recovery measurement module is used to open the output-end electrically controlled valve, close the waste valve, and restore the flow measurement of the fluid.
2. The magnetic induction flow meter according to claim 1, characterized in that, The magnetic induction flow meter further includes: a descaling cycle setting module and a descaling time point acquisition module, wherein the descaling cycle setting module and the descaling time point acquisition module work before the time point response module works. The descaling cycle setting module is used to set the descaling cycle according to the duration of scale formation on the electrode. The descaling time point acquisition module is used to acquire the descaling time point according to the set descaling cycle.
3. The magnetic induction flow meter according to claim 1, characterized in that, The electrically powered descaling module includes: a second flow rate acquisition module and a second flow rate judgment module; The second flow rate acquisition module is used to obtain a second flow rate value based on the first voltage signal detected by the electrode terminal; The second flow rate determination module is used to determine whether the second flow rate of the electrode terminal after being energized is within the range of the first preset flow rate. If the second flow rate is within the range of the first preset flow rate, the descaling circuit module is turned off; otherwise, the descaling circuit module remains on.
4. The magnetic induction flow meter according to claim 1, characterized in that, The descaling operation shutdown module includes: a third flow value acquisition module and a third flow value judgment module; The third flow rate acquisition module is used to obtain a third flow rate value based on the second signal voltage detected by the electrode; The third flow rate value determination module is used to determine whether the third flow rate value is within the range of the second preset flow rate value. If the third flow rate value is within the range of the second preset flow rate value, the fluid discharge into the waste tank is stopped; otherwise, the fluid continues to be discharged into the waste tank.
5. The magnetic induction flow meter according to claim 1, characterized in that, The magnetic field provided by the excitation coil is a constant magnetic field with uniform distribution; the input-end solenoid valve, the output-end solenoid valve, the electrolyte valve, and the waste valve are controlled by an electronic control device.
6. A magnetic induction flow measurement method, characterized in that, The method is based on a magnetic induction flow meter provided by any one of claims 1-5, and the method includes: a detection operation step and a descaling operation step; The detection process includes: Step S1: In response to the descaling time point being reached, close the input and output solenoid valves of the magnetic induction flow meter. Step S2: Open the electrolyte valve and waste valve of the magnetic induction flow meter, start the electrolyte pump of the magnetic induction flow meter and continuously discharge electrolyte into the measuring chamber of the magnetic induction flow meter at the first power; wherein, the electrolyte and the fluid remaining in the measuring chamber are discharged from the waste tank; Step S3: After the electrolyte is discharged from the measuring chamber at a constant rate or the electrolyte pump continues to work for a preset first time, control the magnetic induction flow meter to measure the first flow value. Step S4: Determine whether the first flow rate value is within the range of the first preset flow rate value. If it is within the range of the first preset flow rate value, the electrode terminal is qualified and no descaling operation is required. Otherwise, the descaling operation step is performed. The descaling process includes the following steps: Step S5: Turn off the electrolyte pump, the electrolyte valve, and the waste valve; turn on the descaling circuit module of the magnetic induction flow meter and continuously energize the electrode terminals to perform the descaling operation. Step S6: After the descaling operation is completed, turn off the descaling circuit module, open the waste valve and the input terminal electric control valve, and discharge the electrolyte in the measuring chamber into the waste tank by introducing the fluid. Step S7: Open the output-end solenoid valve, close the waste valve, and resume flow measurement of the fluid.
7. The magnetic induction flow measurement method according to claim 6, characterized in that, Prior to step S1, the method further includes: Step A: Set the descaling cycle according to the duration of electrode scaling; Step B: Obtain the descaling time point according to the set descaling cycle.
8. The magnetic induction flow measurement method according to claim 6, characterized in that, Step S5 includes: Step S501: Obtain the second flow rate value based on the first voltage signal detected by the electrode terminal; Step S502: Determine whether the second flow rate value of the electrode terminal after being energized is within the range of the first preset flow rate value. If the second flow rate value is within the range of the first preset flow rate value, then turn off the descaling circuit module; otherwise, keep the descaling circuit module on.
9. The magnetic induction flow measurement method according to claim 6, characterized in that, Step S6 includes: Step S601: Obtain the third flow rate value based on the second signal voltage detected by the electrode; Step S602: Determine whether the third flow rate value is within the range of the second preset flow rate value. If the third flow rate value is within the range of the second preset flow rate value, stop the fluid from being discharged into the waste tank; otherwise, the fluid continues to be discharged into the waste tank.
10. The magnetic induction flow measurement method according to claim 6, characterized in that, The magnetic field provided by the excitation coil is a constant magnetic field with uniform distribution; the input-end solenoid valve, the output-end solenoid valve, the electrolyte valve, and the waste valve are controlled by an electronic control device.