An electrode slurry flow cleaning device

Abstract

This invention provides an electrode slurry flow cleaning device, relating to the field of flowmeter cleaning, comprising: a standard flowmeter and a flowmeter to be cleaned; the fluid outlet of the standard flowmeter and the fluid inlet of the flowmeter to be cleaned are connected by a second pipe, and a second valve is installed on the second pipe; the fluid outlet of an electric pump is connected to the fluid inlet of the standard flowmeter by a first pipe, and a first valve is installed on the first pipe; the fluid inlet of the electric pump is connected to a water tank by a fourth pipe; the water tank is connected to the fluid outlet of the flowmeter to be cleaned by a tee pipe, and a fourth valve is installed on the tee pipe; one end of the first pipe, located between the first valve and the electric pump, is connected to a third pipe; the other end of the second pipe, located between the second valve and the flowmeter to be cleaned, is connected to the third pipe, and a third valve is installed on the third pipe. This invention can accurately determine whether the cleaning is thorough by comparing the water parameters output by the standard flowmeter and the flowmeter to be cleaned, and the flowmeter can verify the cleaning qualification on the cleaning equipment.

Description

Technical Field

[0001] This invention relates to the field of flow meter cleaning technology, specifically to an electrode slurry flow cleaning device. Background Technology

[0002] Electrode slurry flow meter is a core measurement and control device in the lithium battery electrode coating process. It is used to accurately measure and monitor the flow rate of positive and negative electrode slurry to ensure the uniformity and consistency of coating thickness.

[0003] Electrode slurry flow meters in use require regular cleaning to ensure measurement accuracy and prevent pipeline blockage. Existing flow meter cleaning devices, such as CN113245316B, a scale cleaning device for electromagnetic flow meters, only have a cleaning function and lack the function of verifying the cleaning effect of the flow meter after cleaning. The cleaning effect cannot be verified before the flow meter is removed from the cleaning device, which may result in incomplete cleaning. It is necessary to reinstall the flow meter to the cleaning device for cleaning, which increases the labor and time costs of disassembling and reassembling the flow meter. Moreover, repeated disassembly and reassembly may cause wear and tear on the components, affecting the sealing performance of the flow meter. Summary of the Invention

[0004] This invention provides an electrode slurry flow cleaning device to solve the technical problems mentioned in the background.

[0005] To solve the above-mentioned technical problems, the present invention discloses an electrode slurry flow cleaning device, comprising:

[0006] A standard flow meter and a flow meter to be cleaned are connected by a second pipe, and a second valve is installed on the second pipe.

[0007] An electric pump, the fluid outlet of which is connected to the fluid inlet of a standard flow meter via a pipe, a valve is installed on the pipe, and the fluid inlet of the electric pump is connected to a water tank via a pipe; the water tank is connected to the fluid outlet of the flow meter to be cleaned via a tee pipe, a valve is installed on the tee pipe;

[0008] Pipeline 3 is connected to one end of Pipeline 1, which is located between Valve 1 and Electric Pump. Pipeline 2 is connected to the other end of Pipeline 3, which is located between Valve 2 and Flow Meter to be Cleaned. Valve 3 is installed on Pipeline 3.

[0009] Preferably, valve one, valve two, valve three, and valve four are all ball valves.

[0010] A liquid density sensor is installed on the second pipe between the fluid outlet of the standard flow meter and the second valve. A liquid density sensor is also installed on the tee pipe near the water tank inlet.

[0011] Preferably, during the cleaning process: valve one is closed and valve three is opened; the water in the water tank enters the electric pump inlet through pipe four, and then enters the flow meter to be cleaned through pipe one, pipe three and pipe two from the electric pump outlet; the water discharged from the flow meter to be cleaned is discharged through the drain port of the three-way pipe.

[0012] The cycle performed after cleaning is completed includes: valve one is opened and valve three is closed; water from the water tank enters the electric pump inlet through pipe four, and then enters the standard flow meter through pipe one from the electric pump outlet. The water discharged from the standard flow meter enters the flow meter to be cleaned through pipe two. The water discharged from the flow meter to be cleaned enters the water tank through the tee pipe, but does not enter the drain outlet of the tee pipe.

[0013] The cycle is repeated after cleaning. The flow rate and density of the water output from the standard flow meter are compared with the flow rate and density output from the flow meter to be cleaned to determine whether the cleaning of the flow meter is qualified.

[0014] Preferably, the water tank is equipped with a level gauge.

[0015] Preferably, the electrode slurry flow cleaning equipment also includes:

[0016] Liquid density sensor: used to detect the density of the water discharged during the cleaning process of the flow meter to be cleaned;

[0017] Memory: Stores the correspondence between flow meter type, theoretical cleaning flow range, and theoretical cleaning pressure range, as well as the electric pump control and output relationship; the electric pump control and output relationship is "correspondence between electric pump control parameters, electric pump outlet flow range, and electric pump outlet pressure range";

[0018] Timer: Used to time the cleaning process;

[0019] Cleaning control device: It is electrically connected to the liquid density sensor, electric pump and timer respectively, and the cleaning control device establishes a data interaction link with the memory;

[0020] The cleaning control device includes:

[0021] Module 1: Used to obtain the theoretical cleaning flow range and theoretical cleaning pressure range of the flow meter to be cleaned.

[0022] Preferably, the cleaning control device further includes:

[0023] The filtering module is used to filter the cleaning flow range and cleaning pressure range that meet the current allowable flow coefficient range and current allowable pressure coefficient range of the flow meter to be cleaned from the theoretical cleaning flow range and theoretical cleaning pressure range.

[0024] Analysis Module 1: Used to determine the target control parameter range of the electric pump based on the cleaning flow range 1, the cleaning pressure range 1, and the preset electric pump control and output relationship; and to determine the initial cleaning control parameters;

[0025] Control Module 1: Used to control the electric pump to operate with the initial cleaning control parameters for the initial cleaning time, and to control the electric pump to operate with the corrected control parameters until the flow meter to be cleaned is cleaned.

[0026] The module includes: constructing a detection time-density coefficient fitting line based on multiple detection results from the liquid density sensor during the initial cleaning time; and determining the average pressure slope and average flow slope corresponding to the target control parameter range of the electric pump based on the relationship between the electric pump control and output.

[0027] Analysis Module 2: This module is used to divide the detection time-density coefficient fitting line into multiple segments; determine the average density coefficient of each segment; and determine the characteristic ratio of the standard deviation of all average density coefficients to the mean of all average density coefficients.

[0028] Warning module: When only one of the following occurs: the average of all average density coefficients is less than a preset multiple of the baseline density coefficient, or the eigenvalue is greater than a preset eigenvalue, an early warning will be issued.

[0029] Correction module: When the warning module issues an alert, the corrected control parameters are determined based on the average value of all average density coefficients, the characteristic ratio, the initial cleaning control parameters, the average pressure slope, and the average flow slope.

[0030] Preferably, the time of each segment is continuous, and the difference between the maximum density coefficient and the minimum density coefficient of each segment is less than the preset density coefficient difference;

[0031] When the average of all average density coefficients is less than a preset multiple of the baseline density coefficient, and the eigenvalue is greater than a preset eigenvalue, the warning module will issue an alarm.

[0032] The median value of the first sub-interval of the N equally divided sub-intervals of the target control parameter interval of the electric pump is determined as the initial cleaning control parameter.

[0033] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] This invention eliminates the need to disassemble the flow meter to be cleaned from the cleaning equipment. The cleaning process or circulation verification process can be completed by switching pipelines and valves. This avoids the labor and time costs caused by repeatedly disassembling and assembling the flow meter to be cleaned, and also prevents the problems of component wear and reduced sealing performance caused by disassembly and assembly.

[0036] By comparing the flow rate and density of water output from a standard flow meter with the flow rate and density of water output from the flow meter to be cleaned, the thoroughness of cleaning can be accurately determined. This solves the problem that existing devices cannot verify the cleanliness of the water after cleaning, and may not be completely cleaned, requiring a second cleaning.

[0037] The closed-loop return of cleaning water is achieved in the cyclic verification process, thereby reducing water consumption. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0039] Figure 1 This is a schematic diagram of the device of the present invention;

[0040] Figure 2 This is a schematic diagram of the overall structure of the device of the present invention;

[0041] Figure 3 This is a schematic diagram of the overall structure of the present invention after the addition of the flow direction.

[0042] In the diagram: 1. Standard flow meter; 2. Flow meter to be cleaned; 3. Pipe 2; 4. Valve 2; 5. Electric pump; 6. Pipe 1; 7. Valve 1; 8. T-pipe; 9. Water tank; 10. Valve 4; 11. Pipe 3; 12. Valve 3; 13. Pipe 4. Detailed Implementation

[0043] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0044] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0045] The present invention provides the following embodiments:

[0046] Example 1: This embodiment of the invention provides an electrode slurry flow cleaning device, such as... Figures 1-3 As shown, it includes:

[0047] Standard flow meter 1 and flow meter 2 to be cleaned are connected by a pipe 2 3 and a valve 2 4 is installed on the pipe 2 3.

[0048] Electric pump 5, the fluid outlet of electric pump 5 is connected to the fluid inlet of standard flow meter 1 through pipe 6, valve 7 is installed on pipe 6, the fluid inlet of electric pump 5 is connected to water tank 9 through pipe 13; water tank 9 is connected to the fluid outlet of flow meter 2 to be cleaned through tee pipe 8, valve 10 is installed on tee pipe 8.

[0049] Pipeline 3 11, the position of pipeline 1 6 between valve 1 7 and electric pump 5 connects to one end of pipeline 3 11, the position of pipeline 2 3 between valve 2 4 and flow meter 2 to be cleaned connects to the other end of pipeline 3 11, and valve 3 12 is installed on pipeline 3 11.

[0050] Among them, valve 7, valve 4, valve 12, and valve 10 are all ball valves. The valves of the present invention can be configured as electric valves as needed.

[0051] A liquid density sensor is installed on pipe 23 between the fluid outlet of standard flow meter 1 and valve 24, and a liquid density sensor is also installed on the three-way pipe 8 near the inlet of water tank 9.

[0052] During the cleaning process: valve 17 is closed and valve 312 is opened; water from water tank 9 enters the inlet of electric pump 5 through pipe 413, and then enters the flow meter 2 to be cleaned through pipe 16, pipe 311 and pipe 23 from the outlet of electric pump 5; water discharged from the flow meter 2 to be cleaned is discharged through the drain port of tee pipe 8.

[0053] The cycle performed after cleaning is completed includes: valve 17 is opened and valve 312 is closed; water from water tank 9 enters the inlet of electric pump 5 through pipe 413, and then enters the standard flow meter 1 through pipe 16 from the outlet of electric pump 5; the water discharged from standard flow meter 1 enters the flow meter 2 to be cleaned through pipe 23; the water discharged from flow meter 2 to be cleaned enters water tank 9 through three-way pipe 8, but does not enter the drain outlet of three-way pipe 8.

[0054] After cleaning, a cycle is performed to determine whether the cleaning of the flow meter 2 is qualified by comparing the flow rate and density of the water output by the standard flow meter 1 with the flow rate (determined by the flow meter itself) and density (detected by the corresponding density sensor) output by the flow meter 2 to be cleaned.

[0055] In both of the above processes, the flow path of water from water tank 9 to electric pump 5 is the same and fixed. Figure 2 Not marked in the text Figure 2 The solid black lines indicate the water flow path during the cleaning process. Figure 2 The dashed line indicates the water flow path during the cyclic process that is performed after cleaning is completed.

[0056] Water tank 9 is equipped with a level gauge.

[0057] The beneficial effects of the above technical solution are as follows:

[0058] This invention eliminates the need to disassemble the flow meter 2 to be cleaned from the cleaning equipment. The cleaning process or the circulation verification process can be completed by switching the pipeline and valve. This avoids the labor and time costs caused by repeatedly disassembling and assembling the flow meter to be cleaned, and at the same time prevents the problems of component wear and sealing performance degradation caused by disassembly and assembly.

[0059] By comparing the flow rate and density of water output from standard flow meter 1 with the flow rate and density of water output from flow meter 2 to be cleaned, the thoroughness of cleaning can be accurately determined. This solves the problem that existing devices cannot verify the cleanliness of the water after cleaning, and may not be able to clean it thoroughly, requiring a second cleaning.

[0060] The closed-loop return of cleaning water is achieved in the cyclic verification process, thereby reducing water consumption.

[0061] Example 2, based on Example 1, further includes the electrode slurry flow cleaning equipment:

[0062] Liquid density sensor: used to detect the density of the water discharged during the cleaning process of the flow meter to be cleaned;

[0063] Memory: Stores the correspondence between flow meter type, theoretical cleaning flow range, and theoretical cleaning pressure range, as well as the electric pump control and output relationship; the electric pump control and output relationship is "correspondence between electric pump control parameters, electric pump outlet flow range, and electric pump outlet pressure range";

[0064] Timer: Used to time the cleaning process;

[0065] Cleaning control device: It is electrically connected to the liquid density sensor, electric pump and timer respectively, and establishes a data interaction link with the memory.

[0066] The cleaning control device includes:

[0067] Module 1: Used to obtain the theoretical cleaning flow range and theoretical cleaning pressure range of the flow meter to be cleaned;

[0068] The filtering module is used to filter the cleaning flow range and cleaning pressure range that meet the current allowable flow coefficient range and current allowable pressure coefficient range of the flow meter to be cleaned from the theoretical cleaning flow range and theoretical cleaning pressure range.

[0069] Analysis Module 1: Based on the cleaning flow range 1, cleaning pressure range 1, and the preset electric pump control and output relationship, it determines the target control parameter range of the electric pump; and determines the median value of the first sub-interval of the N equally divided sub-intervals of the target control parameter range of the electric pump as the initial cleaning control parameter.

[0070] Control Module 1: Used to control the electric pump to operate with the initial cleaning control parameters for the initial cleaning time, and to control the electric pump to operate with the corrected control parameters until the flow meter to be cleaned is cleaned.

[0071] The module constructs a detection time-density coefficient fitting line based on multiple detection results of the liquid density sensor within the initial cleaning time (which can be 2 to 5 minutes); and determines the average pressure slope and average flow slope corresponding to the target control parameter range of the electric pump based on the relationship between the electric pump control and output.

[0072] Analysis Module 2: This module is used to divide the detection time-density coefficient fitting line into multiple segments; determine the average density coefficient of each segment; and determine the characteristic ratio of the standard deviation of all average density coefficients to the mean of all average density coefficients.

[0073] Warning module: When only one of the following occurs: the average of all average density coefficients is less than the preset multiple of the reference density coefficient, or the characteristic ratio is greater than the preset characteristic ratio, a warning will be issued; when both the average of all average density coefficients is less than the preset multiple of the reference density coefficient and the characteristic ratio is greater than the preset characteristic ratio, the warning module will issue an alarm (reminding adjustments; at this time, cleaning agents can be added during cleaning, and the cleaning agent parameters can be adjusted, such as adjusting the temperature).

[0074] Correction module: When the warning module issues an alert, the corrected control parameters are determined based on the average value of all average density coefficients, the characteristic ratio, and the initial cleaning control parameters.

[0075] Among them, the time of each sub-segment is continuous, and the difference between the maximum density coefficient and the minimum density coefficient of each sub-segment is less than the preset density coefficient difference;

[0076] When the average of all average density coefficients is greater than or equal to the preset multiple of the baseline density coefficient, and the characteristic ratio is greater than the preset characteristic ratio, the corrected control parameters are determined based on the characteristic ratio; this indicates that the cleaning effect meets the requirements, but the fluctuation is too large, so the control parameters are slightly reduced; the corrected control parameters = initial cleaning control parameters × (1 - [min(slope one, slope two)] × characteristic ratio multiple × correction factor one).

[0077] Feature ratio multiple = Feature ratio determined by analysis module 2 ÷ Preset feature ratio;

[0078] And based on the relationship between the control and output of the electric pump, the average pressure slope and average flow slope corresponding to the target control parameter range of the electric pump are determined; specifically: based on the "correspondence between the control parameters of the electric pump - the outlet flow range of the electric pump - the outlet pressure range of the electric pump", a fitting line of the electric pump control parameters - outlet flow rate corresponding to the target control parameter range of the electric pump is constructed and the average slope of the fitting line is determined (i.e., the flow rate slope is denoted as slope one) and a fitting line of the electric pump control parameters - outlet pressure corresponding to the target control parameter range of the electric pump is determined and the average slope of the fitting line is determined (i.e., the pressure slope is denoted as slope two).

[0079] The correction factor 1 (the product of the correction factor 1 unit and the slope unit is 1; the correction factor 1 value is 0.05 to 0.5) is based on experimental calibration (for example, under different characteristic ratio multiples and different slope combinations, the optimal value of the control parameter after correction is measured, and the reasonable range of the correction factor 1 is calculated in reverse).

[0080] When the average of all average density coefficients is less than the preset multiple of the reference density coefficient (insufficient flushing capacity) and the characteristic ratio is less than the preset characteristic ratio (stable performance is acceptable), the corrected control parameters are determined based on the average density coefficient (increase the control parameters).

[0081] Corrected control parameters = Initial control parameters × (1 + [max(slope one, slope two)] × correction factor two × first difference);

[0082] First difference = Preset multiple of baseline density coefficient - Average density coefficient;

[0083] The correction factor 2 (the product of the correction factor 2 unit and the slope unit is 1; the correction factor 2 value is 0.05 to 0.6) is based on experimental calibration (for example, under different average density coefficients and different slope combinations, the optimal value of the corrected control parameter is measured, and the reasonable range of the correction factor 2 is calculated in reverse).

[0084] In this embodiment, the theoretical cleaning flow range and the theoretical cleaning pressure range are the cleaning flow range and cleaning pressure range corresponding to the historical cleaning qualification of the same type of flow meter.

[0085] Flow coefficient = Cleaning flow rate ÷ Maximum allowable cleaning flow rate of the flow meter to be cleaned;

[0086] Pressure coefficient = Cleaning pressure ÷ Maximum allowable cleaning pressure of the flow meter to be cleaned;

[0087] The current allowable flow coefficient range (which can be 0.5 to 0.85) and the current allowable pressure coefficient range (which can be 0.5 to 0.8) refer to the reasonable range of values ​​for the flow coefficient and pressure coefficient of the flow meter to be cleaned under the current operating conditions, when it is running safely and stably.

[0088] The original maximum permissible cleaning flow rate and original maximum permissible cleaning pressure of the flow meter to be cleaned refer to the safe cleaning upper limit values ​​(i.e., the maximum cleaning flow rate and pressure that the equipment itself can withstand) clearly specified in the design / usage specifications of the flow meter at the factory. However, due to the long-term use of the flow meter to be cleaned, the corresponding current maximum permissible cleaning pressure and cleaning flow rate of the flow meter to be cleaned may change. The specific determination method is as follows: Refer to the actual historical operating data of the flow meter of the same type to be cleaned, divide the usage time ratio (used time ÷ rated usable time) range, and determine the maximum permissible cleaning flow rate attenuation ratio and the maximum permissible cleaning pressure attenuation ratio corresponding to each usage time ratio range (for example, historical data shows that when the usage time ratio is 0.3 to 0.5, the maximum permissible cleaning flow rate attenuates by 10% and the maximum permissible cleaning pressure attenuates by 8%). Correspond one-to-one with the usage time ratio range and the current maximum permissible cleaning flow rate and the current maximum permissible cleaning pressure after attenuation to form a mapping table. The current safe cleaning upper limit of the target flow meter can be directly queried through this table.

[0089] The "correspondence between the control parameters of the electric pump, the flow rate range of the electric pump, and the pressure range of the electric pump" is a pre-established correlation formula or correlation mapping table based on the performance characteristics of the electric pump, through calibration, experimentation, or theoretical modeling; each setting of the control parameters corresponds to a set of defined flow and pressure output ranges.

[0090] For each flow rate value within the theoretical cleaning flow rate range, calculate the corresponding flow rate coefficient; for each pressure value within the theoretical cleaning pressure range, calculate the corresponding pressure coefficient; and select cleaning flow rate range one that satisfies the current allowable flow rate coefficient range, and also select cleaning pressure range one that satisfies the current allowable pressure coefficient range.

[0091] The midpoint of the first sub-interval (with values ​​ranging from 3 to 5) of the target control parameter range for the electric pump is determined as the initial cleaning control parameter. During the initial cleaning stage, the midpoint of the more conservative sub-interval in the target range is used as the parameter, which can ensure the basic cleaning effect of the initial cleaning and avoid impacting the flow meter or pipeline with high parameters at the beginning.

[0092] Density coefficient = Liquid density sensor reading ÷ Density of water in the tank;

[0093] The x-axis of the detection time-density coefficient fitting line represents the detection time, and the y-axis represents the density coefficient corresponding to the detection time.

[0094] Determine the reference density coefficient = density of the slurry used in the flow meter ÷ density of water;

[0095] To ensure cleaning efficiency and effectiveness, the actual density coefficient during the cleaning process must be greater than or equal to the preset multiple (the preset multiple is 0.85 to 0.95; a value of 0.8 is sufficient to meet the minimum requirements for cleaning efficiency and cleaning pass rate. The above-mentioned multiple of 0.85 to 0.95 (for higher cleaning efficiency and cleaning pass rate) is to allow for fine-tuning of small control parameters) reference density coefficient.

[0096] Each sub-segment is time-continuous, and the difference between the maximum and minimum density coefficients of each sub-segment is less than the preset density coefficient difference.

[0097] Eigenratio = Standard deviation of all mean density coefficients ÷ Average of all mean density coefficients;

[0098] The preset density coefficient difference is: 2 to 5 times the standard deviation of the density fluctuation of the slurry under stable operating conditions ÷ the density of water (based on the equipment's resistance to fluctuations, take 2 to 5 times this ratio (take 5 times when the equipment pipeline / flowmeter has strong impact resistance, and take 2 times when it has weak impact resistance)).

[0099] When the average of all average density coefficients is greater than or equal to the preset multiple of the reference density coefficient, and the characteristic ratio is less than the preset characteristic ratio, it indicates that the initial cleaning control parameters can reliably clean the area.

[0100] The preset characteristic ratio (with a value of 0.08 to 0.12) is a relative standard for measuring whether the density fluctuation in the pre-cleaning process is controllable. If it exceeds this value, the fluctuation is judged to be abnormal.

[0101] The above embodiments can be applied to water rinsing alone, or to water combined with flow meter cleaning agent cleaning;

[0102] The beneficial effects of the above technical solution are as follows:

[0103] The cleaning flow rate range and cleaning pressure range 1 that meet the current allowable flow / pressure coefficients are selected. This ensures that the cleaning parameters are within the safe operating range of the equipment (avoiding exceeding the equipment's rated values) and also meets the current cleaning requirements. Based on the selected ranges and the characteristics of the electric pump, the target control parameter range is determined, achieving precise determination of control parameters based on the synchronous matching of both flow rate and pressure. The median value of a conservative sub-range is selected as the initial cleaning parameter. This conservative parameter avoids the impact of high parameters on the pipeline / flow meter while ensuring the basic cleaning intensity, thus guaranteeing a reliable assessment of the cleaning effect from the aforementioned initial cleaning test.

[0104] The fitted line is segmented and the average density coefficient and feature ratio are calculated. The average density coefficient quantifies the cleaning effect, and the feature ratio quantifies the degree of density fluctuation (whether it is stable), providing a two-dimensional quantitative basis for subsequent parameter adjustment.

[0105] The early warning / alarm is triggered by a combination of average density coefficient and characteristic ratio, enabling early intervention in cleaning risks. When only one warning is triggered, appropriate corrected control parameters can be determined based on the slope corresponding to the actual flow rate and the slope corresponding to the pressure, based on the average density coefficient and characteristic ratio. This makes the correction more accurate and ensures reliable subsequent cleaning of the flow meter to be cleaned.

[0106] Example 3, based on Example 1 or 2, further includes:

[0107] Cleaning agent storage tank: The outlet of the cleaning agent storage tank is connected to the fluid inlet of the flow meter 2 to be cleaned through pipe five (the cleaning agent can be introduced into the fluid inlet of the flow meter 2 to be cleaned by gravity or by setting a micro electric pump 5 to input the cleaning agent into the fluid inlet of the flow meter 2 to be cleaned). A valve five (an electric valve) is installed on pipe five; the cleaning agent storage tank is equipped with a temperature control device to adjust the temperature of the cleaning agent (such as cleaning liquid);

[0108] The intelligent control device for hybrid cleaning includes:

[0109] Liquid density sensor: used to detect the density of the water discharged during the cleaning process of the flow meter 2 (the liquid density sensor can be installed in the pipe section of the tee pipe connected to the outlet of the flow meter 2, or it can be installed in other locations).

[0110] Water temperature sensor 1: Used to detect the water temperature of the wastewater discharged from the flow meter 2 to be cleaned (water temperature sensor 1 can be installed in the section of the tee pipe connected to the outlet of the flow meter 2 to be cleaned).

[0111] Water temperature sensor 2: Used to detect the water temperature in water tank 9;

[0112] Memory: Stores a process baseline parameter library; the process baseline parameter library stores a correlation table of flow meter type, slurry type, baseline mixed liquor temperature range, and baseline wastewater density increment.

[0113] The mixed cleaning regulating device includes:

[0114] Module 2: Obtain the reference mixed flushing flow rate range and reference mixed flushing pressure range of the electric pump 5 corresponding to the flow meter 2 to be cleaned;

[0115] Control Module 2: Before cleaning the flow meter 2 to be cleaned, first control the temperature of the cleaning agent in the cleaning agent storage tank to be the temperature closest to the current room temperature in the reference mixture temperature range;

[0116] The cleaning process of the flow meter 2 to be cleaned first involves the control module 2 controlling the control parameters of the electric pump 5 so that the actual output flow and output pressure of the electric pump 5 meet the target values ​​of the corresponding reference flow range (which can be the median or the maximum value or other fixed values) and the target values ​​of the reference pressure range (which can be the median or the maximum value or other fixed values). The control module 2 also controls the valve 5 to operate at the corresponding rated opening for a pre-test period. Within the pre-test period (a short test period before the formal start of the cleaning process to verify parameter matching and equipment status, such as 1 to 3 minutes), the control module 2 controls the liquid density sensor and water temperature sensor to perform several tests.

[0117] Analysis Module 2: Based on the analysis of the liquid density sensor detection value, the actual density increment is determined, and the water temperature sensor detection value is used to determine the average wastewater temperature (the temperature of the mixture of detergent and clean water after passing through the flow meter 2 to be cleaned).

[0118] When the actual density increment is greater than or equal to the corresponding reference density increment, the cleaning control parameters at the preset working time will continue to control the flow meter 2 to be cleaned to continue cleaning.

[0119] Temperature correction module: When the actual density increment is less than the corresponding reference density increment, the target cleaning agent temperature is determined by combining the clean water temperature detected by temperature sensor 2, the average sewage temperature, the actual water flow rate of electric pump 5, and the cleaning agent flow rate at the rated opening. The temperature in the cleaning agent storage tank is controlled to meet the target cleaning agent temperature, and the above cleaning is continued.

[0120] Actual density increment = average value detected by liquid density sensor - corresponding theoretical mixing density;

[0121] The corresponding theoretical mixing density is: the target value of the reference flow range, the target value of the reference pressure range, the rated opening of valve five, and the theoretical average value of the liquid density sensor detection value under the condition of detergent temperature in the detergent storage tank during the pre-test period; it can be determined based on the test before actual batch cleaning or in combination with the mixing density formula;

[0122] Target cleaning agent temperature = Cleaning agent temperature in the storage tank during the pre-test duration × ;

[0123] The temperature compensation coefficient (ranging from 0.01 to 0.7) is based on experiments or historical calibration of the same type of flow meter and slurry to be cleaned. Multiple labeled temperature compensation coefficients can be obtained. The median or maximum value of the maximum temperature compensation coefficient range can be selected (which will result in a slight surplus in the cleaning agent temperature) and substituted into the temperature compensation coefficient in the above formula. However, the final average wastewater temperature after mixing should meet the corresponding reference mixed liquid temperature range, with the cleaning agent temperature in the cleaning agent storage tank as the target cleaning agent temperature.

[0124] In this embodiment:

[0125] Flow meter type: refers to the specifications / model of the flow meter to be cleaned;

[0126] Slurry type: refers to the type of medium transported before the flow meter to be cleaned. The residual adhesion characteristics of different slurries determine the required cleaning intensity.

[0127] For specific types of flow meters and slurry types, there are corresponding benchmark parameter sets (constructed based on historical qualified cleaning data): benchmark mixed liquid temperature range, benchmark wastewater density increment, benchmark mixed flushing flow rate range, and benchmark mixed flushing pressure range.

[0128] The cleaning effect and efficiency meet the requirements under the benchmark parameter set without causing damage to the relevant equipment.

[0129] Reference mixing temperature range: Matches the optimal cleaning temperature range of the special cleaning agent for the target slurry; meets the corresponding residual dissolution rate or residual peeling rate of the dissolved slurry, and is also compatible with the upper temperature resistance limit of the flow meter components;

[0130] Baseline wastewater density increment (can be a range): When the cleaning is qualified, the value corresponding to the above "average value of liquid density sensor detection - corresponding theoretical mixing density".

[0131] The reference mixing flushing flow rate range and reference mixing flushing pressure range (both not exceeding the upper limit of the flow meter's allowable flushing flow rate and flushing pressure): Under the conditions of the reference mixed liquid temperature range, the minimum mixing flushing flow rate range and minimum mixing flushing pressure range are used to ensure that the mixed liquid flows fully through the flow meter channel and effectively acts on the slurry residue, ultimately achieving the preset cleaning rate / stripping rate requirements.

[0132] The minimum mixed flushing flow rate range and minimum mixed flushing pressure range are determined by combining experimental and historical data: In the initial experimental stage, for a specific flow meter and a specific slurry combination, tests are gradually conducted starting from lower flow rates and pressures to find the minimum flow rate and pressure values ​​that allow the mixed liquid to flow fully through the flow channel, effectively act on the residue, and achieve the preset cleaning rate / stripping rate; In subsequent actual cleaning, this initial value is used as a benchmark, and continuous verification and fine-tuning are performed based on qualified data after each cleaning (such as residue removal rate and equipment no-damage records), ultimately forming a stable minimum mixed flushing flow rate range (determined by combining the initial minimum flow rate and the actual flow rate verified when subsequent cleanings are successful) and minimum mixed flushing pressure range.

[0133] The beneficial effects of the above technical solution are as follows:

[0134] Since the temperature of clean water is not constant at room temperature, and cleaning agents require a suitable temperature to ensure cleaning effectiveness, this invention can reliably adjust the temperature of the cleaning agent even when the water temperature fluctuates greatly, ensuring overall cleaning results. The temperature control device can adjust the cleaning agent temperature in real time: During the initial short period of cleaning, it can quickly determine the cleaning effect of the current cleaning agent and water mixture. During cleaning, it can work with a temperature correction module to dynamically adjust to the target cleaning agent temperature, ensuring that the mixed solution temperature always matches the cleaning requirements and preventing temperature deviations from affecting the dissolution / removal of residues.

[0135] The setting of minimum mixing flushing flow rate range and minimum mixing flushing pressure range ensures the effective action efficiency of the mixed liquid, while reducing impact damage to the flow meter;

[0136] Furthermore, during temperature adjustment, the minimum mixing and rinsing flow rate range and the minimum mixing and rinsing pressure range are always matched with the target cleaning agent temperature, thus ensuring both cleaning effectiveness and minimizing impact.

[0137] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An electrode tab slurry flow washing apparatus, characterized by: The utility model relates to a kind of cleaning device for flowmeter, including: Standard flowmeter (1), flowmeter (2) to be washed, the fluid outlet of standard flowmeter (1), the fluid inlet of flowmeter (2) to be washed is communicated by pipeline two (3), valve two (4) is set on pipeline two (3); Electric pump (5), the fluid outlet of the electric pump (5) is communicated with the fluid inlet of standard flowmeter (1) by pipeline one (6), valve one (7) is set on the pipeline one (6), the fluid inlet of electric pump (5) is communicated water tank (9) by pipeline four (13);Water tank (9) and the fluid outlet of flowmeter (2) to be washed are communicated by three-way pipe (8), valve four (10) is set on three-way pipe (8); Pipeline three (11), one end of pipeline three (11) is communicated with the position between valve one (7) and electric pump (5) of pipeline one (6), the other end of pipeline three (11) is communicated with the position between valve two (4) and flowmeter (2) to be washed of pipeline two (3), valve three (12) is set on pipeline three (11); Liquid density sensor: for detecting the density of water discharged in the cleaning process of flowmeter (2) to be washed; Cleaning control device includes: Acquisition module one: for obtaining the theoretical cleaning flow interval and the theoretical cleaning pressure interval of flowmeter (2) to be washed; Screening module: for screening cleaning flow interval one and cleaning pressure interval one from the theoretical cleaning flow interval and the theoretical cleaning pressure interval, which meet the current allowable flow coefficient interval and the current allowable pressure coefficient interval of flowmeter (2) to be washed; Analysis module one: for determining the target control parameter interval of electric pump (5) based on cleaning flow interval one and cleaning pressure interval one and the preset control and output relationship of electric pump (5);And determine the initial cleaning control parameter; Control module one: for controlling electric pump (5) to work for initial cleaning time length with initial cleaning control parameter, and controlling electric pump (5) to work with modified control parameter until the cleaning of flowmeter (2) to be washed is completed; Construction module: based on the multiple detection results of liquid density sensor within initial cleaning time length, construct detection time-density coefficient fitting line;And based on the average pressure slope and the average flow slope corresponding to the target control parameter interval of electric pump (5) determined by the control and output relationship of electric pump (5);The control and output relationship of electric pump (5) is "the control parameter of electric pump (5)-water flow interval of electric pump (5)-water pressure interval of electric pump (5) corresponding relationship"; Analysis module two: for dividing detection time-density coefficient fitting line into multiple subsegments;Determine the average density coefficient of each subsegment, determine the characteristic ratio of the standard deviation of all average density coefficients and the average value of all average density coefficients; Warning module: when the average value of all average density coefficients is less than preset multiple reference density coefficient, and the characteristic ratio is greater than preset characteristic ratio, only one of them occurs, warning is carried out; Correction module: when warning module warns, the modified control parameter is determined based on the average value of all average density coefficients, the characteristic ratio, the initial cleaning control parameter, the average pressure slope and the average flow slope.

2. The pole piece slurry flow washing apparatus of claim 1, wherein: The valve one (7), the valve two (4), the valve three (12), and the valve four (10) are ball valves.

3. The pole piece slurry flow cleaning device according to claim 1, wherein: During the cleaning process, the valve one (7) is closed, and the valve three (12) is opened; the water in the water tank (9) enters the inlet of the electric pump (5) through the pipeline four (13), and then enters the to-be-cleaned flow meter (2) through the pipeline one (6), the pipeline three (11), and the pipeline two (3) from the outlet of the electric pump (5); the water discharged from the to-be-cleaned flow meter (2) is discharged through the sewage outlet of the three-way pipe (8).

4. The pole piece slurry flow cleaning device according to claim 1, wherein: The water tank (9) is provided with a liquid level meter.

5. The pole piece slurry flow washing apparatus of claim 1, wherein: The time of each sub-section is continuous, and the difference between the maximum density coefficient and the minimum density coefficient of each sub-section is less than a preset density coefficient difference; When the average value of all average density coefficients is less than a preset multiple reference density coefficient, and a characteristic ratio is greater than a preset characteristic ratio, the warning module alarms; The median value of the first sub-section of N sub-sections equally divided in the target control parameter interval of the electric pump (5) is determined as the initial cleaning control parameter.

6. The pole piece slurry flow cleaning device according to claim 1, wherein: A liquid density sensor is arranged on the pipeline two (3) between the fluid outlet of the standard flow meter (1) and the valve two (4), and a liquid density sensor is also arranged near the inlet of the three-way pipe (8) of the water tank (9); The cycle process performed after the cleaning is completed includes: the valve one (7) is opened, and the valve three (12) is closed; the water in the water tank (9) enters the inlet of the electric pump (5) through the pipeline four (13), and then enters the standard flow meter (1) through the pipeline one (6) from the outlet of the electric pump (5); the water discharged from the standard flow meter (1) enters the to-be-cleaned flow meter (2) through the pipeline two (3); the water discharged from the to-be-cleaned flow meter (2) enters the water tank (9) through the three-way pipe (8), and does not enter the sewage outlet of the three-way pipe (8); The cycle process performed after the cleaning is completed judges whether the cleaning of the to-be-cleaned flow meter (2) is qualified by comparing the flow and density of the water output by the standard flow meter (1) and the flow and density of the water output by the to-be-cleaned flow meter (2).

7. The pole piece slurry flow washing apparatus of claim 1, wherein: Further comprising: A memory storing a flow meter type-theoretical cleaning flow interval-theoretical cleaning pressure interval correspondence relationship and a control and output relationship of the electric pump (5); A timer for timing the cleaning time; The cleaning control device is electrically connected with the liquid density sensor, the electric pump (5), and the timer, and a data interaction link is established between the cleaning control device and the memory.

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