Voltage-sharing electrode diameter and scale layer thickness measuring and cleaning device and method

Abstract

The invention discloses a measuring and cleaning device and method for the diameter of a voltage-sharing electrode and the thickness of a scale layer. The measuring and cleaning device comprises a rotating disc type automatic sample injector, an electrode cleaning module and a control module, wherein the rotating disc type automatic sample injector is used for executing sample injection operation; the electrode cleaning module is used for descaling and cleaning the voltage-sharing electrode; the electrode measuring module comprises a laser measuring module and an eddy current measuring module, the eddy current measuring module is used for measuring the thickness of a scale layer of the voltage-sharing electrode, and the laser measuring module is used for measuring the diameter of the voltage-sharing electrode before and after descaling and cleaning; the power module is used for supplying power to the device; the control panel is used for controlling the rotating disc type automatic sample injector, the electrode measuring module and the electrode cleaning module; and the data statistical analysis module is used for receiving data transmitted by the laser measurement module and the eddy current measurement module, calculating the scale layer thickness, the thickness average value and the standard deviation of the voltage-sharing electrode, calculating the diameter, the diameter average value and the standard deviation of the voltage-sharing electrode, and drawing a voltage-sharing electrode scaling change trend curve and an electrode body diameter change trend curve.

Description

Technical Field

[0001] The present invention relates to the field of maintenance and detection of power equipment, and particularly to a device and method for measuring and cleaning the diameter of a grading electrode and the thickness of a scale layer. Background Art

[0002] High-voltage direct current (HVDC) transmission is known as the "highway" of future energy and plays a key role in the power system. HVDC transmission has been used for long-distance and large-capacity power transmission, interconnection of asynchronous AC systems, and integration of large-scale renewable energy into the system at a distance. As the core equipment of the HVDC transmission system, the converter valve generates a large amount of heat during operation and needs to dissipate heat through a cooling system. To avoid corrosion of the aluminum radiator caused by the leakage current of the cooling water, pin-type platinum electrodes are often used for voltage equalization. However, the scale layer deposited on the platinum electrode weakens the voltage equalization ability, increases the risk of leakage current, and even causes blockage of the waterway, affecting the cooling effect and electrode performance. The "Regulations on Maintenance and Testing of Converter Valves and Valve Cooling Systems (Trial)" requires that no less than 1 / 6 of the electrodes (including S-water pipe electrodes) be randomly selected from each valve hall every year for inspection and descaling.

[0003] Currently, the measurement of the diameter of the grading electrode and the thickness of the scale layer mainly uses contact measurement methods, and the tool used is a digital display vernier caliper. Its defects are that it cannot measure the grading electrode of the array-type electrode pins, it is easy to cause the scale layer to fall off, and there are few measurement points for the diameter and thickness of the grading electrode. Scale cleaning mainly relies on manual descaling, but this descaling method is easy to damage the electrode. In addition, the scale layer is generally composed of bayerite, which is not easily soluble in acids and alkalis, and the electrode nuts are often made of stainless steel, so it is not suitable to use strong acids and alkalis for cleaning. Therefore, a device and method that can effectively clean the scale layer and achieve non-destructive detection of the grading electrode are needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for measuring and cleaning the diameter of a grading electrode and the thickness of a scale layer, so as to solve the technical problems of few measurement points for the diameter of the grading electrode and the thickness of the scale layer, inability to measure the grading electrode of the array-type electrode pins, and the existing descaling method being easy to damage the electrode.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A device for measuring and cleaning the diameter of a grading electrode and the thickness of a scale layer includes a turntable type automatic sampler, an electrode measurement module, an electrode cleaning module, a power supply module, a data statistical analysis module, and a control panel; The turntable type automatic sampler is used to perform the sampling operation and send the grading electrode to the electrode measurement module or the electrode cleaning module; The electrode cleaning module is used to descale and clean the grading electrode; The electrode measurement module includes a laser measurement module and an eddy current measurement module. The eddy current measurement module is used to measure the scale thickness of the equalizing electrode, and the laser measurement module is used to measure the diameter of the equalizing electrode before and after descaling cleaning. The power supply module is used to supply power to the device. The control panel is used to control the turntable type automatic sampler, the electrode measurement module and the electrode cleaning module. The data statistics and analysis module is used to receive the data transmitted by the laser measurement module and the eddy current measurement module, calculate the scale thickness, thickness average value and standard deviation of the equalizing electrode, calculate the diameter, average value of the diameter and standard deviation of the equalizing electrode, and draw the scaling change trend curve of the equalizing electrode and the diameter change trend curve of the electrode body.

[0006] Further, the turntable type automatic sampler includes a turntable assembly, a sampling execution mechanism, a drive system and a positioning system. The turntable assembly is used to carry the equalizing electrode. The sampling execution mechanism is used to send the equalizing electrode on the turntable assembly to the electrode measurement module or the electrode cleaning module. The drive system is used to drive the sampling execution mechanism, and the positioning system is used to send the equalizing electrode to the preset position of the electrode measurement module or the electrode cleaning module.

[0007] Further, the eddy current measurement module includes a first housing. A specimen support is arranged in the middle of the first housing. Eddy current sensors are symmetrically and movably arranged on both sides of the first housing. By adjusting the probes of the eddy current sensors, different parts of the single-needle equalizing electrode or different electrode needles of the array-type electrode needle equalizing electrode can be contacted, and at least the scale thickness at three positions of the upper, middle and lower parts of the equalizing electrode can be measured.

[0008] Further, the laser measurement module includes a second housing. Laser displacement sensors are symmetrically arranged on both sides of the second housing. The laser displacement sensors are arranged on both sides of the second housing through electric slide rails. The electrode cleaning module is located in the second housing.

[0009] Further, the electrode cleaning module includes a cleaning cavity. One side of the cleaning cavity is connected with a main cleaning medium inlet through a first transition section, and the other side is connected with a waste liquid discharge outlet through a second transition section. An ultrasonic generator is arranged at the bottom of the cleaning cavity. Two laser windows are symmetrically arranged on both sides of the cleaning cavity, and the two laser windows are respectively arranged corresponding to the two laser displacement sensors.

[0010] Further, a high-definition camera is also arranged in the second housing, and a high-definition camera window corresponding to the high-definition camera is arranged on the side of the cleaning cavity.

[0011] Further, the first transition section is connected to one side of the cleaning cavity, and the part of the first transition section located outside the cleaning cavity is a closed structure. The main inlet of the cleaning medium is arranged at a position above the side of the first transition section.

[0012] Further, the second transition section is connected to the other side of the cleaning cavity, and a baffle is movably arranged between the second transition section and the cleaning cavity. The part of the second transition section located outside the cleaning cavity is a structure with an open top. The waste liquid discharge port is arranged at the bottom of the second transition section.

[0013] Further, the minimum displacement accuracy of the electric slide rail is 0.1 mm, which is used to drive the laser displacement sensor to move in the vertical direction and cooperate with the laser displacement sensor to complete multi-point measurement.

[0014] A method for measuring and cleaning the diameter and scale layer thickness of a pressure equalizing electrode includes: Controlling the turntable type automatic sampler through the control panel to send the pressure equalizing electrode to the eddy current measurement module to measure the scale layer thickness of the pressure equalizing electrode. Controlling the turntable type automatic sampler through the control panel to send the pressure equalizing electrode to the electrode cleaning module, and using the laser measurement module to measure the diameter of the pressure equalizing electrode before and after descaling cleaning. The data statistical analysis module receives the data transmitted by the laser measurement module and the eddy current measurement module, and calculates the scale layer thickness, thickness average value and standard deviation of the pressure equalizing electrode, calculates the diameter, average value of the diameter and standard deviation of the pressure equalizing electrode, and draws the scale formation change trend curve and the electrode body diameter change trend curve of the pressure equalizing electrode.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The device for measuring and cleaning the diameter and scale layer thickness of the pressure equalizing electrode provided by the present application includes a turntable type automatic sampler, an electrode measurement module, an electrode cleaning module, etc., integrating measurement, cleaning and data analysis, with simple operation and comprehensive functions, and can realize the rapid measurement of the diameter and thickness of the pressure equalizing electrode and efficient descaling. The electrode measurement module adopts two methods of laser measurement and eddy current measurement, which can perform multi-point measurement on the diameter and scale thickness of the pressure equalizing electrode, and the measurement results of the two methods can be mutually verified. The data statistical analysis module can statistically analyze historical data and output the change trends of the diameter and scale formation degree of the pressure equalizing electrode, providing a reliable guarantee for the stable operation of the electrode equipment.

[0016] The present invention adopts a non-contact measurement method, which will not cause damage to the surface of the pressure equalizing electrode, and has high sensitivity and measurement accuracy, and can efficiently and accurately measure the diameter and scale layer thickness of the pressure equalizing electrode and clean the scale layer. Description of the Drawings

[0017] The accompanying drawings in the specification are used to provide a further understanding of the present invention and form a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0018] Figure 1 It is a schematic structural diagram of the device of the present invention; Figure 2 It is a schematic diagram of the electrode cleaning module of the present invention.

[0019] Among them, 1 is a turntable type automatic sampler; 2 is a laser displacement sensor; 3 is an electric slide rail; 4 is an electrode cleaning module; 41 is an ultrasonic generator; 42 is a laser window; 43 is a high-definition camera window; 44 is a main inlet for cleaning medium; 45 is a waste liquid discharge port; 5 is a high-definition camera; 61 is an eddy current sensor; 62 is a specimen holder; 7 is a control panel. Specific embodiments

[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned accompanying drawings are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0022] Embodiment 1 See Figure 1 , a device for measuring and cleaning the diameter and scale thickness of a pressure equalizing electrode, comprising a turntable type automatic sampler 1, an electrode measurement module, an electrode cleaning module, a data statistical analysis module and a control panel 7.

[0023] The turntable type automatic sampler 1 is used to perform the sampling operation, and send the equalizing electrode (single-needle equalizing electrode or array electrode needle equalizing electrode) to the electrode measurement module or the electrode cleaning module. It includes a turntable assembly, a sampling execution mechanism, a drive system, and a positioning system. The turntable assembly is used to carry the equalizing electrode, the sampling execution mechanism is used to send the equalizing electrode on the turntable assembly to the electrode measurement module or the electrode cleaning module (the sampling execution mechanism can adopt a manipulator, etc.), the drive system is used to drive the sampling execution mechanism, and the positioning system is used to send the equalizing electrode to a preset position of the electrode measurement module or the electrode cleaning module; The electrode measurement module includes a laser measurement module and an eddy current measurement module. The eddy current measurement module is used to measure the scale thickness of the equalizing electrode, and the laser measurement module is used to measure the diameter of the equalizing electrode before and after descaling and cleaning; the eddy current measurement module includes a first housing, a specimen support 62 is arranged in the middle of the first housing, and eddy current sensors 61 are symmetrically and movably arranged on both sides of the first housing. By adjusting the probe of the eddy current sensor 61, different parts of the single-needle equalizing electrode or different electrode needles of the array electrode needle equalizing electrode can be contacted, and at least the scale thickness at three positions of the upper, middle and lower parts of the equalizing electrode can be measured; the laser measurement module includes a second housing, and laser displacement sensors 2 are symmetrically arranged on both sides of the second housing. The laser displacement sensors 2 are arranged on both sides of the second housing through electric slide rails 3. The minimum displacement accuracy of the electric slide rails 3 is 0.1 mm, which is used to drive the laser displacement sensors 2 to move in the vertical direction. In cooperation with the laser displacement sensors 2, the diameter (or the scale thickness) of the equalizing electrode can be measured at multiple points before and after the equalizing electrode is cleaned. The electrode cleaning module is located in the second housing.

[0024] See Figure 2, the electrode cleaning module includes an ultrasonic generator 41, a cleaning medium, and a cleaning cavity. One side of the cleaning cavity is connected to a main cleaning medium inlet 44 through a first transition section. The main cleaning medium inlet 44 can be connected to a device for storing the cleaning medium. The other side is connected to a waste liquid discharge port 45 through a second transition section. The first transition section communicates with one side of the cleaning cavity, and the part of the first transition section located outside the cleaning cavity is a closed structure. The main cleaning medium inlet 44 is arranged at a position above the side of the first transition section. The second transition section communicates with the other side of the cleaning cavity, and a baffle is movably arranged between the second transition section and the cleaning cavity. The part of the second transition section located outside the cleaning cavity is a top-opening structure. The waste liquid discharge port 45 is arranged at the bottom of the second transition section. After cleaning, the baffle can be opened manually or automatically so that the cleaning medium can be discharged through the second transition section and the waste liquid discharge port 45. The ultrasonic generator 41 is arranged at the bottom of the cleaning cavity. Two laser windows 42 are symmetrically arranged on both sides of the cleaning cavity, and the two laser windows 42 respectively correspond to two laser displacement sensors 2. A high-definition camera 5 is also arranged in the second housing. A high-definition camera window 43 corresponding to the high-definition camera ⑤ is arranged on the side of the cleaning cavity.

[0025] The power supply module is used to supply power to the entire device.

[0026] The control panel 7 is used to control the rotary automatic sampler 1, the electrode measurement module, and the electrode cleaning module. For example, it controls the rotary automatic sampler 1 to perform a sampling operation and place the equalizing electrode on the sample holder 62. For another example, it controls the eddy current sensor 61 to move and measure, adjusts the probe of the eddy current sensor 61 to be able to contact different parts of the single-pin equalizing electrode or different electrode pins of the array-type electrode needle equalizing electrode, so that it can at least measure the scale thickness at the upper, middle, and lower positions of the equalizing electrode. For yet another example, it controls the laser displacement sensor 2 to move up and down along the electric slide rail 3 to measure the diameter of the equalizing electrode before cleaning, and controls the cleaning medium to enter the cleaning cavity through the main cleaning medium inlet 44 and the first transition section, turns on the ultrasonic generator 41 to clean the equalizing electrode, and at the same time observes the cleaning situation through the high-definition camera 43. After cleaning, it controls the laser displacement sensor 2 to move up and down along the electric slide rail 3 to measure the diameter of the cleaned equalizing electrode, etc. The above control processes can all be realized by existing technologies, and the specific implementation processes and connection relationships are not described in detail here.

[0027] More preferably, the rotary automatic sampler 1 has a function of memorizing actions and quantities, and the maximum sample carrying capacity of the turntable assembly is 20 equalizing electrodes.

[0028] More preferably, the laser measurement module has an automatic optical path calibration function.

[0029] More preferably, the power of the ultrasonic generator 41 is adjustable and can be adjusted to the required power according to the actual situation.

[0030] More preferably, the sample holder 62 is made of polytetrafluoroethylene.

[0031] Embodiment 2 Figure 1 It is a schematic structural diagram of an equipotential electrode diameter and scale layer thickness measurement and cleaning device constructed according to a preferred embodiment of the present invention. Now, the equipotential electrode diameter and scale layer thickness measurement and cleaning device provided by the embodiments of the present application will be described. As Figure 1 shown, the equipotential electrode diameter and scale layer thickness measurement and cleaning device includes a turntable type automatic sampler 1 for performing sample injection operations, an electrode cleaning module 4 for removing scale from the equipotential electrode, a laser measurement module and an eddy current measurement module for measuring the scale layer thickness, a control panel 7 for operating the device, a power supply module for powering the device, a data statistical analysis module for processing measurement data, and a Bluetooth module for transmitting data.

[0032] During measurement, the equipotential electrode is first placed in the eddy current measurement module through the turntable type automatic sampler 1. Specifically, an equipotential electrode carried on the turntable assembly is placed in the eddy current measurement module through the sample injection actuator. After the measurement is completed, the equipotential electrode is sent to the laser measurement module through the sample injection actuator. The laser measurement module first measures the scaled equipotential electrode and then measures the equipotential electrode after scale removal.

[0033] In the embodiments of the present application, the spatial position of the eddy current sensor 61 is adjustable. By adjusting the probe of the eddy current sensor 61, different parts of the single-pin equipotential electrode or different electrode pins of the array-type electrode pin equipotential electrode can be contacted, and the scale layer thickness at at least three positions, namely the upper, middle, and lower positions, can be measured.

[0034] Place the equipotential electrode on the turntable assembly of the turntable type automatic sampler 1. Control the turntable type automatic sampler 1 through the control panel 7. Send the equipotential electrode to the polytetrafluoroethylene sample holder 62 of the eddy current measurement module through the sample injection actuator. By adjusting the position of the eddy current sensor 61, the probe of the eddy current sensor 61 contacts different parts of the equipotential electrode, and the scale layer thickness at the upper, middle, and lower positions is measured.

[0035] In the embodiments of the present application, two laser displacement sensors 2 are respectively located behind the two laser windows 41 made of transparent glass in the cleaning cavity. The minimum displacement accuracy of the electric slide rail 3 is 0.1 mm, which cooperates with the laser displacement sensors 2 to complete multi-point measurement.

[0036] After the equalizing electrode completes the measurement in the eddy current measurement module, it is sent to the cleaning cavity of the laser measurement module through the sampling actuator. By controlling the electric slide rail 3 to adjust the position of the laser displacement sensor 2, more than 10 points can be selected to measure the fouled equalizing electrode; since the laser displacement sensor 2 is located behind the laser window 41 made of transparent glass in the cleaning cavity, the diameter of the scale-free equalizing electrode after cleaning can also be measured at multiple points.

[0037] In the embodiment of the present application, the cleaning cavity is provided with two laser windows 42, one high-definition camera window 43, one high-definition camera 5, one main cleaning medium inlet 44 and one waste liquid discharge port 45. The ultrasonic generator 41 is located at the bottom of the cleaning cavity.

[0038] After the equalizing electrode is sent to the laser measurement module, the cleaning medium can be injected into the cleaning cavity through the main cleaning medium inlet 44, and the ultrasonic generator 41 can be turned on to remove scale from the equalizing electrode. The scale removal efficiency is 1 min to 5 min per piece. After cleaning, the waste liquid is discharged through the waste liquid discharge port 45. After the waste liquid is discharged, the diameter of the scale-free equalizing electrode can be measured at multiple points through the laser measurement module. The whole process avoids the damage that may be caused to the equalizing electrode by manual scale removal.

[0039] In the embodiment of the present application, the data statistical analysis module contains a Bluetooth module.

[0040] After the data statistical analysis module receives the measurement data transmitted from the eddy current measurement module and the laser measurement module, it can calculate the average value of the scale thickness of the equalizing electrode and the diameter of the equalizing electrode, can draw the scaling change trend curve of the equalizing electrode and the diameter change trend curve of the electrode body, and can transmit the collected data to the mobile device through the Bluetooth module.

[0041] The eddy current measurement module mainly calculates the scale thickness by increasing the effective distance between the coil and the conductive substrate through the insulating layer, thereby changing the principle of the coil impedance. The coil impedance Z is related to the distance d from the coil to the conductive substrate (i.e., the thickness of the insulating layer). The impedance change can be approximated as:

[0042] Where: : The initial spacing without the insulating layer; k: A coefficient related to the coil parameters, the conductivity (σ) of the substrate material, and the excitation frequency (f).

[0043] When the device is initialized, a linear model of the thickness d and the impedance change is established by measuring the sample with a known thickness:

[0044] where the coefficients a and b are coefficients obtained by fitting samples of known thickness, and during actual measurement, the is substituted into the formula to calculate the fouling layer thickness d.

[0045] The laser measurement module measures the diameter of the pressure equalizing electrode through two laser displacement sensors that emit light towards each other. When the laser beam irradiates the fouled surface, the distance that the reflected light spot returns to the laser receiver probe head has a functional relationship with the thickness: h = L - (A + B) where: h: the diameter of the pressure equalizing electrode; L: the fixed distance between the left and right laser displacement sensors; A, B: the measured distances from the left and right laser displacement sensors to the fouled surface or the substrate surface.

[0046] The movable laser displacement sensor obtains the diameters at multiple points of the pressure equalizing electrode by moving on the electric slide rail, thereby obtaining the diameter, average value of the diameter, and standard deviation of the pressure equalizing electrode. At the same time, during the descaling process, full - process measurement is realized. Based on the diameter of the pressure equalizing electrode after the descaling is finally completed and the difference between the diameter h of the fouled electrode, the fouling layer thickness can be obtained :

[0047] Through the full - process measurement of the above - mentioned movable laser displacement sensor, the fouling layer thickness, average value of the thickness, and standard deviation of the pressure equalizing electrode during the descaling process, the diameter, average value of the diameter, and standard deviation of the pressure equalizing electrode can be obtained. And according to the full - process data, the fouling change trend of the pressure equalizing electrode and the change trend curve of the diameter of the electrode body are plotted. The fouling layer thickness of the pressure equalizing electrode obtained by the eddy current measurement module is used to compare and calibrate the data of the laser measurement module to ensure the accuracy and reliability of the measurement data.

[0048] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the scope of its protection. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: after reading the present invention, those skilled in the art can still make various changes, modifications, or equivalent replacements to the specific implementation manners of the invention, but these changes, modifications, or equivalent replacements are all within the scope of the claims of the invention pending approval.

Claims

1. A device for measuring and cleaning the diameter of an equalizing electrode and the thickness of a fouling layer, characterized in that, It includes a turntable type automatic sampler (1), an electrode measurement module, an electrode cleaning module, a power supply module, a data statistical analysis module and a control panel (7); The turntable type automatic sampler (1) is used to perform the sampling operation and send the equipotential electrode to the electrode measurement module or the electrode cleaning module; The electrode cleaning module is used to remove scale and clean the equipotential electrode; The electrode measurement module includes a laser measurement module and an eddy current measurement module. The eddy current measurement module is used to measure the scale thickness of the equipotential electrode, and the laser measurement module is used to measure the diameter of the equipotential electrode before and after scale removal and cleaning; The power supply module is used to supply power to the device; The control panel (7) is used to control the turntable type automatic sampler (1), the electrode measurement module and the electrode cleaning module; The data statistical analysis module is used to receive the data transmitted by the laser measurement module and the eddy current measurement module, calculate the scale thickness, thickness average value and standard deviation of the equipotential electrode, calculate the diameter, average value of the diameter and standard deviation of the equipotential electrode, and draw the scale change trend curve of the equipotential electrode and the diameter change trend curve of the electrode body; 2. The measuring and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 1, wherein, The turntable type automatic sampler (1) includes a turntable assembly, a sampling execution mechanism, a drive system and a positioning system; The turntable assembly is used to carry the equipotential electrode. The sampling execution mechanism is used to send the equipotential electrode on the turntable assembly to the electrode measurement module or the electrode cleaning module. The drive system is used to drive the sampling execution mechanism, and the positioning system is used to send the equipotential electrode to the preset position of the electrode measurement module or the electrode cleaning module; 3. The measurement and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 1, characterized in that, The eddy current measurement module includes a first housing. A specimen support (62) is arranged in the middle of the first housing. Eddy current sensors (61) are symmetrically and movably arranged on both sides of the first housing. By adjusting the probe of the eddy current sensor (61), different parts of the single-needle equipotential electrode or different electrode needles of the array-type electrode needle equipotential electrode can be contacted, and at least the scale thickness at the upper, middle and lower positions of the equipotential electrode can be measured; 4. The measuring and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 1, wherein, The laser measurement module includes a second housing. Laser displacement sensors (2) are symmetrically arranged on both sides of the second housing. The laser displacement sensors (2) are arranged on both sides of the second housing through electric slide rails (3). The electrode cleaning module is located in the second housing; 5. The measuring and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 4, characterized in that, The electrode cleaning module includes a cleaning cavity. One side of the cleaning cavity is connected with a main cleaning medium inlet (44) through a first transition section, and the other side is connected with a waste liquid discharge port (45) through a second transition section. An ultrasonic generator (41) is arranged at the bottom of the cleaning cavity. Two laser windows (42) are symmetrically arranged on both sides of the cleaning cavity, and the two laser windows (42) are respectively arranged corresponding to the two laser displacement sensors (2); 6. The measuring and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 5, wherein A high-definition camera (5) is also arranged in the second housing, and a high-definition camera window (43) corresponding to the high-definition camera (5) is arranged on the side of the cleaning cavity; 7. The measuring and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 5, characterized in that The first transition section is communicated with one side of the cleaning cavity, and the part of the first transition section located outside the cleaning cavity is of a closed structure. The main cleaning medium inlet (44) is arranged at the upper position on the side of the first transition section; 8. A measuring and cleaning device for the diameter of a voltage equalizing electrode and the thickness of a scale layer according to claim 5, characterized in that, The second transition section communicates with the other side of the cleaning cavity, and a baffle is movably arranged between the second transition section and the cleaning cavity. The part of the second transition section located outside the cleaning cavity has an open-top structure, and the waste liquid discharge port (45) is arranged at the bottom of the second transition section.

9. The measuring and cleaning device for the diameter of the voltage equalizing electrode and the scale layer thickness according to claim 5, characterized in that, The minimum displacement accuracy of the electric slide rail (3) is 0.1 mm, which is used to drive the laser displacement sensor (2) to move in the vertical direction and cooperate with the laser displacement sensor (2) to complete multi-point measurement.

10. A method for measuring and cleaning the diameter of the voltage equalizing electrode and the scale layer thickness, which uses the device for measuring and cleaning the diameter of the voltage equalizing electrode and the scale layer thickness according to any one of claims 1-9, characterized in that, Including: The turntable type automatic sampler (1) is controlled by the control panel (7) to send the equipotential electrode to the eddy current measurement module to measure the scale thickness of the equipotential electrode. The turntable type automatic sampler (1) is controlled by the control panel (7) to send the equipotential electrode to the electrode cleaning module. The laser measurement module is used to measure the diameters of the equipotential electrode before and after descaling cleaning. The data statistical analysis module receives the data transmitted by the laser measurement module and the eddy current measurement module, calculates the scale thickness, thickness average value and standard deviation of the equipotential electrode, calculates the diameter, average value of the diameter and standard deviation of the equipotential electrode, and draws the scaling change trend curve of the equipotential electrode and the diameter change trend curve of the electrode body.

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