Pipeline cleaning device for haematococcus pluvialis culture

Abstract

The invention discloses a pipeline cleaning device for haematococcus pluvialis culture, and relates to the technical field of culture pipeline cleaning. By constructing a dirt thickness index and circulation resistance index model and combining image processing and sensor data, accurate quantitative evaluation of the pipeline pollution state and the blockage degree is achieved, experience driving in the cleaning process is converted into data driving, and scientificity and accuracy of cleaning decision making are improved; the correction coefficient is dynamically calculated according to the pollutant thickness and the blocking degree grade, the output power of the conveying pump and the output power of the reflux pump are intelligently adjusted based on the weight coefficient, optimal matching of the cleaning strength and energy consumption is achieved, and the problem of excessive cleaning or insufficient cleaning is avoided; according to the method, the weight coefficient is fitted through historical data, calculation of the pollutant thickness and the circulation resistance index is more targeted and adaptive, a power adjusting mechanism is combined, use saving of the cleaning solution and electric energy is achieved, the operation cost is reduced, and the requirements for green cleaning and sustainable development are met.

Description

Technical Field

[0001] This invention relates to the field of aquaculture pipeline cleaning technology, and in particular to a pipeline cleaning device for Haematococcus pluvialis aquaculture. Background Technology

[0002] Haematococcus pluvialis, as an important microalgae resource, requires extremely high water quality and cleanliness of aquaculture equipment during its cultivation. The aquaculture pipes, as the core carrier for nutrient solution delivery and algal circulation, are prone to accumulating algal residue, microbial films, and scale on their inner walls after long-term use. These contaminants not only reduce pipe flow efficiency and affect the uniformity of nutrient solution supply, but may also breed harmful microorganisms, disrupting the growth environment of Haematococcus pluvialis and leading to a decline in algal yield and quality. Therefore, effectively preventing the accumulation of fouling on the inner walls of the pipes has become a key issue in ensuring the stable operation of the aquaculture system. Existing cleaning devices mostly focus on the recycling treatment after contaminant removal, but there are still technological gaps in the identification, quantitative assessment, and proactive intervention of fouling in its early stages, making it difficult to achieve a shift from "passive cleaning" to "active scale prevention." Furthermore, the cleaning device for Haematococcus pluvialis cultivation pipes usually circulates the cleaning solution directly within the pipes. During the cleaning process, algal residue, scale, and other impurities that are detached will circulate along with the cleaning solution. This not only leads to a decrease in the purity of the cleaning solution and a gradual reduction in the cleaning effect, but also causes the pipes to be blocked or to adhere to the inside of the device due to impurities, making it difficult to continuously circulate and use. Ultimately, the contaminated cleaning solution can only be discharged directly after multiple cleaning cycles, further exacerbating resource waste and environmental pressure. Therefore, improvements are needed to address the aforementioned issues. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pipe cleaning device for Haematococcus pluvialis cultivation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pipe cleaning device for Haematococcus pluvialis cultivation, comprising a base frame, wherein multiple circulating cleaning tanks are equidistantly installed on the top surface of the base frame, and the bottom surface of each circulating cleaning tank is provided with an outlet pipe. One end of the outlet pipe is connected to a first solenoid valve pipe through a flange. One end of multiple first solenoid valve pipes is connected to a first connecting pipe through a flange. One end of the first connecting pipe is connected to the input end of a delivery pump through a flange. The output end of the delivery pump is provided with a first flange pipe for connecting to the cultivation pipe. An electrical control box is provided on one side of the top surface of the base frame, and a column is installed on the base frame on the side of the electrical control box. A return pump is fixedly connected to the top of the column. The control box of the cleaning device is equipped with an intelligent control component, which includes an analysis module. The analysis module constructs a real-time monitoring and early warning model for the accumulation of fouling on the inner wall of pipelines. It calculates a fouling thickness index based on the proportion of pollutant coverage area and changes in normalized turbidity on the inner wall of the pipeline, used to characterize the degree of fouling accumulation. It calculates a flow resistance index based on the deviation between actual flow rate and rated flow rate, and the deviation between actual pressure and rated pressure, used to characterize the impact of fouling accumulation on pipeline flow performance. It sets early warning thresholds based on fouling thickness and volume information from historical data, providing three levels of early warning for fouling accumulation: low, medium, and high. Based on the fouling accumulation level and flow resistance level, it calculates corresponding anti-fouling intervention coefficients, and then dynamically adjusts the operating parameters of the delivery pump and return pump in conjunction with weighting coefficients to achieve proactive intervention and suppression in the early stages of fouling accumulation.

[0005] Preferably, the data analysis steps performed by the analysis module are as follows: M1: After sorting the collected corresponding data, calculate the mean and standard deviation, set the fluctuation range, and identify and remove outliers; acquire real-time image data through the pipeline inner wall image acquisition system, and after grayscale conversion and image segmentation processing, identify the dirt-covered area and calculate the proportion of dirt covering the pipeline inner wall. , serving as a fundamental characterization parameter for dirt accumulation; M2: Based on the coverage area percentage A dirt thickness index was constructed by measuring the turbidity change of the cleaning fluid in the return flow path. This is used to quantify the cumulative thickness of fouling on the inner wall of pipes; based on the flow and pressure deviations between the pipe inlet and outlet, a flow resistance index is constructed. It is used to assess the real-time impact of fouling accumulation on pipe flow performance; based on the fouling thickness and volume information in historical data, the regression coefficients are fitted by the least squares method and normalized to obtain the weight coefficients of the fouling thickness index and the flow resistance index.

[0006] Preferably, the intelligent control component includes an adjustment module, and the execution steps of the adjustment module are as follows: Y1: Based on historical blockage thickness data, a judgment node is set to classify the contaminant thickness and blockage degree into three levels: low, medium, and high, and a corresponding level index is assigned. and According to the aforementioned grade index and Calculate the pollutant thickness correction factor And the degree of congestion correction factor ; Y2: Based on the correction coefficient and and preset weighting coefficients and The output power of the delivery pump and return pump can be dynamically adjusted.

[0007] Preferably, the input end of the reflux pump is provided with a second flange pipe for connecting to the aquaculture pipeline, the output end flange of the reflux pump is connected to an inlet pipe with a four-way valve, the four-way pipes of the four-way valve are all flanged and connected to reflux pipes, one end of the reflux pipe is connected to a second solenoid valve pipe through a flange, one end of the second solenoid valve pipe is connected to a filter assembly installed on the outer wall of the circulating cleaning tank through a flange, and one side of the outer wall of the filter assembly is provided with a second connecting pipe communicating with an adjacent circulating cleaning tank.

[0008] Preferably, the number of the plurality of circulating cleaning tanks is four, and the four circulating cleaning tanks are, in order, a clean water tank, an acid water tank, an alkaline water tank, and a hot water tank.

[0009] Preferably, the four-way valve is equipped with a third solenoid valve for controlling the flow of the internal pipeline.

[0010] Preferably, the filter assembly includes a filter box with an opening on the top surface. Two baffles with staggered openings are symmetrically arranged on the inner wall of the filter box. The top surfaces of the two baffles have first threaded holes. A top cover is installed on the upper end of the inner wall of the filter box. Two first fixing bolts that are symmetrically threaded through the top cover and connected to the first threaded holes on the top surfaces of the two baffles are provided on the top cover. Multiple dovetail grooves are equidistantly opened on the bottom surface of the top cover. Filter bags are slidably connected at the positions of the dovetail grooves on the top cover.

[0011] Preferably, a T-shaped fixing strip is fixed to the top of the filter bag, and a plurality of second threaded holes are equally spaced on one side of the T-shaped fixing strip.

[0012] Preferably, a dovetail block is slidably provided in the dovetail groove, and two L-shaped plates are mirrored on the bottom surface of the dovetail block. The T-shaped fixing strip is slidably provided in the two L-shaped plates. Multiple through holes corresponding to the second threaded holes are opened on the two L-shaped plates, and a second fixing bolt is screwed between the second threaded hole and the through hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are: Through the synergistic effect of the filter components and multi-media circulating cleaning tanks, impurities are continuously removed during the cleaning fluid circulation process, preventing secondary deposition of dirt and improving the long-term cleanliness stability of the pipeline inner wall. The filter bag, through the dovetail block, L-shaped plate and the dovetail groove of the baffle plate sliding cooperation, combined with the detachable fixing design of the second fixing bolt, facilitates quick disassembly, replacement or cleaning of the filter bag, reducing maintenance difficulty and cost, avoiding the impact of filter bag blockage on filtration efficiency, and ensuring the long-term stable operation of the filter components. Furthermore, through the cooperation of multiple circulating cleaning tanks with the first solenoid valve pipe, the one-in-four-way valve pipe and the third solenoid valve, it is easy to realize the alternating cleaning and directional reflux of multiple media such as clean water, acidic water, alkaline water, and hot water, improving the adaptability and cleaning efficiency of different types of pollutants, and thus enabling comprehensive and thorough cleaning of aquaculture pipelines. Finally, it solves the problems of existing devices where impurities are carried during cleaning fluid circulation, resulting in decreased cleaning effect, inconvenience for continuous circulation, and resource waste caused by the direct discharge of cleaning fluid, improving cleaning effect, recycling rate and ease of use. By constructing a fouling thickness index and a flow resistance index model, and combining image processing and sensor data, real-time quantitative monitoring and early warning of fouling accumulation on the inner wall of pipes were achieved. This provides data support for preventing further fouling from the source and promotes the transformation of cleaning methods from post-treatment to pre-prevention. Correction coefficients are dynamically calculated based on the thickness of contaminants and the degree of blockage, and the output power of the delivery pump and return pump is intelligently adjusted based on weighting coefficients. This enables precise intervention in the early stages of fouling formation, effectively inhibiting continuous fouling accumulation, extending the pipe cleaning cycle, and reducing cleaning frequency. By fitting weighting coefficients with historical data, the adaptability of the fouling identification model is optimized. Combined with a power adjustment mechanism, this achieves the economical use of cleaning fluid and electricity, reduces operating costs, and meets the requirements of green cleaning and sustainable development. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view schematic diagram of the overall structure proposed in this invention; Figure 2 This is a second-view schematic diagram of the overall structure proposed in this invention; Figure 3 This is a schematic cross-sectional view of the filter box proposed in this invention; Figure 4 This is a schematic diagram of the overall structure of the filter bag proposed in this invention; Figure 5 This is a flowchart of the system proposed in this invention.

[0015] The following are the components listed in the diagram: 1. Base frame; 2. Circulating cleaning tank; 3. Discharge pipe; 4. First solenoid valve pipe; 5. First connecting pipe; 6. Transfer pump; 7. Return pump; 8. One-in-four-way valve pipe; 9. Return pipe; 10. Second solenoid valve pipe; 11. Filter box; 12. Baffle plate; 13. Filter bag; 14. Dovetail block. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Example 1: See Figures 1 to 4This invention discloses a pipe cleaning device for Haematococcus pluvialis cultivation, comprising a base frame 1, with multiple circulating cleaning tanks 2 equidistantly installed on the top surface of the base frame 1. Each circulating cleaning tank 2 has an outlet pipe 3 on its bottom surface. One end of the outlet pipe 3 is connected to a first solenoid valve pipe 4 via a flange. One end of each of the multiple first solenoid valve pipes 4 is connected to a first connecting pipe 5 via a flange. One end of the first connecting pipe 5 is connected to the input end of a delivery pump 6 via a flange. The output end of the delivery pump 6 has a first flange pipe for connecting to the cultivation pipeline. An electrical control box is located on one side of the top surface of the base frame 1. A column is installed on the base frame 1 next to the electrical control box. A return pump 7 is fixed to the top of the column. The input end of the return pump 7 has a second flange pipe for connecting to the cultivation pipeline. The output end of the return pump 7 is flange-connected to a four-way valve pipe. The inlet pipe of unit 8 and the four-way valve pipe of unit 8 are both flanged and connected to a return pipe 9. One end of the return pipe 9 is connected to the second solenoid valve pipe 10 via a flange. One end of the second solenoid valve pipe 10 is connected to a filter assembly installed on the outer wall of the circulating cleaning tank 2 via a flange. The outer wall of one side of the filter assembly is provided with a second connecting pipe that communicates with the adjacent circulating cleaning tank 2. The transfer pump 6 is model ISG50-160, which is an ISG50-160 type pipeline transfer pump with stable flow and moderate head, ensuring efficient delivery of cleaning fluid. The return pump 7 is model IHF50-32-160, which is an IHF50-32-160 type fluoroplastic return pump, which is resistant to acid and alkali corrosion and adaptable to the return requirements of different types of cleaning fluids. The first solenoid valve pipe 4 and the second solenoid valve... Pipe 10 and the third solenoid valve are both model 4V210-08. Using the 4V210-08 solenoid valve ensures precise control, rapid response, and flexible flow channel switching. The bottom frame 1, circulating cleaning tank 2, outlet pipe 3, first connecting pipe 5, and return pipe 9 are made of 304 stainless steel. Components made of 304 stainless steel are corrosion-resistant, have high structural strength, are suitable for complex environments involving cleaning fluids, and extend the equipment's service life. The bottom frame 1 provides a stable mounting base for all components. The circulating cleaning tank 2 stores multiple types of cleaning fluids. The first solenoid valve pipe 4 and the second solenoid valve pipe 10 control the flow channel opening and closing. The delivery pump 6 provides power for cleaning fluid output, the return pump 7 enables cleaning fluid return, the one-inlet four-way valve pipe 8 achieves multi-path diversion, and the filter assembly intercepts impurities. The return pipe 9 and the second connecting pipe ensure the integrity of the cleaning solution circulation path; together, these components form the basic framework of the device, providing core structural support for the multi-media circulation cleaning of Haematococcus pluvialis cultivation pipelines; there are four circulating cleaning tanks 2, which are, in order, a clean water tank, an acid water tank, an alkaline water tank, and a hot water tank; the four circulating cleaning tanks 2 store different types of cleaning solutions, and the cleaning media can be flexibly switched according to the type of pipeline contaminants such as algal residue, scale, and microbial film, to achieve targeted cleaning and avoid the problem of poor cleaning effect of a single medium; through the above, the adaptability of the device to different contaminants is improved, ensuring the thoroughness of pipeline cleaning; a third solenoid valve is installed in the one-inlet four-way valve pipe 8 to control the internal pipeline flow;The third solenoid valve precisely controls the switching of the internal flow channels of the one-in-four-way valve pipe 8, ensuring that the returning cleaning fluid flows directionally into the corresponding circulating cleaning tank 2, preventing the mixing of different types of cleaning fluid and guaranteeing the purity and cleaning effect of the cleaning fluid. Through the above, the directionality and precision of the cleaning fluid circulation are improved, ensuring the orderly progress of multi-media alternating cleaning.

[0018] In this invention, the filter assembly includes a filter box 11 with an opening on its top surface. Two staggered baffles 12 are symmetrically arranged on the inner wall of the filter box 11, each with a first threaded hole on its top surface. A top cover is installed on the upper end of the inner wall of the filter box 11. Two first fixing bolts, symmetrically arranged and threaded into the top surface of the two baffles 12, are threaded through the top cover. Multiple dovetail grooves are equidistantly arranged on the bottom surface of the top cover, and filter bags 13 are slidably connected to the dovetail grooves on the top cover. The filter box 11, baffles 12, and dovetail blocks 14 are made of 304 stainless steel. Components made of 304 stainless steel are corrosion-resistant and structurally sound. The filter features high structural strength, adaptability to the working environment of cleaning fluid filtration, and extended service life of the filter components. The filter bag 13 is made of polytetrafluoroethylene (PTFE), which is acid and alkali resistant, offers high filtration accuracy, and can precisely intercept fine impurities. The filter box 11 provides a closed space for filtration, and the staggered baffle 12 slows down the flow rate of the cleaning fluid, extending the filtration time and improving impurity interception. The filter bag 13 precisely captures fine impurities, and the top cover and first fixing bolt seal the filter box 11, ensuring filtration stability. Through the above, efficient filtration of the returned cleaning fluid is achieved, improving the purity of the cleaning fluid and facilitating its circulation. The filter bag 13 is fixed to a T-shaped fixing strip at its top, and multiple second threaded holes are equidistantly opened on one side of the T-shaped fixing strip. The T-shaped fixing strip provides a mounting base for the filter bag 13, and the second threaded holes facilitate fixing to the L-shaped plate with bolts, ensuring that the filter bag 13 does not shift during filtration and ensuring stable filtration effect. The above features improve the installation firmness of the filter bag 13 and prevent the filter bag 13 from shifting due to the impact of cleaning liquid, thus affecting the filtration efficiency. A dovetail block 14 is slidably provided in the dovetail groove, and two L-shaped plates are mirrored on the bottom surface of the dovetail block 14. The T-shaped fixing strip is slidably set in the two L-shaped plates, and the two L-shaped plates are opened. There are multiple through holes corresponding to the second threaded holes, and second fixing bolts are screwed between the second threaded holes and the through holes; the T-shaped fixing strip and L-shaped plate are made of aluminum alloy, which is lightweight and strong, making it easy to disassemble and maintain the filter bag 13; the dovetail block 14 corresponds to the dovetail groove of the top cover, and together with the L-shaped plate, the second fixing bolt and the T-shaped fixing strip, the filter bag 13 can be disassembled and installed, which is convenient for cleaning and replacing the filter bag 13 in the future and reduces the difficulty of maintenance; through the above, the maintenance convenience of the filter assembly is improved and the long-term stable operation of the filter assembly is guaranteed.

[0019] Working Principle: In the use of this invention, before cleaning, the two ends of the aquaculture pipeline are connected to the first flange pipe of the delivery pump 6 and the second flange pipe of the return pump 7, respectively. The four circulating cleaning tanks 2 are pre-filled with clean water, acidic water, alkaline water, and hot water, respectively. The cleaning medium and sequence are determined according to the type of contaminants in the pipeline. During the cleaning stage, the electrical control box controls the first solenoid valve pipe 4 at the bottom of the corresponding circulating cleaning tank 2 to open, and the other first solenoid valve pipes 4 to close. The delivery pump 6 starts to draw out the cleaning liquid in the tank and sends it into the aquaculture pipeline through the first connecting pipe 5 and the first flange pipe. During the flow of the cleaning liquid in the pipeline, it peels off algal residue, microbial film, scale and other impurities attached to the inner wall, completing the pipeline cleaning. The cleaning liquid containing impurities after cleaning is drawn out by the return pump 7 through the second flange pipe and sent into the one-in-four-way valve pipe 8. The electrical control box controls the third solenoid valve to adjust the flow channel, so that the cleaning liquid containing impurities enters the filter assembly through the corresponding return pipe 9 and the second solenoid valve pipe 10. During filtration, after the cleaning liquid enters the filter box 11, it passes through the baffles set by two staggered openings. 12. Deceleration extends the flow path and filtration time. Then, the filter bag 13 precisely intercepts algae residue, scale, and other impurities. The filtered clean cleaning solution flows back to the corresponding circulating cleaning tank 2 through the second connecting pipe, realizing the recycling of the cleaning solution. When it is necessary to switch the cleaning medium, the electrical control box closes the current first solenoid valve pipe 4 and opens the first solenoid valve pipe 4 corresponding to the target circulating cleaning tank 2. At the same time, the third solenoid valve of the one-in-four-way valve pipe 8 is adjusted to switch the return channel, so that clean water, acidic water, alkaline water, and hot water can be used for alternating cleaning to meet the cleaning needs of different pollutants. When the filter bag 13 intercepts a lot of impurities, the top cover of the filter box 11 can be removed, the second fixing bolt can be unscrewed, and the dovetail block 14 can be slid out along the dovetail groove of the top cover. The filter bag 13 can be taken out for cleaning or replacement. After replacement, the T-shaped fixing strip of the filter bag 13 is placed into the L-shaped plate, the dovetail block 14 is slid back to its original position, and the second fixing bolt and the first fixing bolt of the top cover are tightened to restore the filtration function. The device is now in use.

[0020] Example 2: See Figure 5 The control box of the cleaning device is equipped with intelligent control components, which include an analysis module and an adjustment module. The analysis module constructs a real-time monitoring and early warning model for the accumulation of fouling on the inner wall of pipelines. It calculates a fouling thickness index based on the proportion of pollutant coverage area and changes in normalized turbidity on the inner wall of the pipeline, used to characterize the degree of fouling accumulation. It calculates a flow resistance index based on the deviation between actual flow rate and rated flow rate, and the deviation between actual pressure and rated pressure, used to characterize the impact of fouling accumulation on pipeline flow performance. It sets early warning thresholds based on fouling thickness and volume information from historical data, providing three levels of early warning for fouling accumulation: low, medium, and high. Based on the fouling accumulation level and flow resistance level, it calculates corresponding anti-fouling intervention coefficients, and then dynamically adjusts the operating parameters of the delivery pump and return pump in conjunction with weighting coefficients to achieve proactive intervention and suppression in the early stages of fouling accumulation. A turbidity sensor is installed at the location of the return pipe 9 to obtain turbidity data. The connecting pipe section between the aquaculture pipeline and the return pump 7 is defined as the return pipe section. Flow sensors are installed on the delivery pipe and the return pipe 9 to obtain the first flow data and the second flow data, respectively. The connecting pipe section between the delivery pump and the aquaculture pipeline is defined as the delivery pipe section. A pressure sensor is installed at the pipeline inlet to obtain pressure data. The inlet end of the aquaculture pipeline is defined as the pipeline inlet. All the acquired data are preprocessed. Preprocessing: The collected data is sorted according to the collection time, and corresponding items collected at the same time are processed. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The settings will correlate the collected data of the corresponding item with the fluctuation range of the corresponding item. Compare, for those outside the fluctuation range The corresponding data within the record is marked as an outlier, and the number of outliers is recorded. ,like If so, the collected data is determined to be abnormal; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time; This represents the total number of data points (such as pressure, first flow rate, second flow rate, turbidity, etc.) collected at a specific moment. Taking pressure data as an example, it refers to the total number of data points acquired by the pressure sensor at the same time. Pressure data (integrated on the sensor) One probe can acquire data simultaneously. (corresponding data), calculated and obtained The mean and standard deviation of the pressure data are used to determine the fluctuation range of the pressure data; Pressure data points outside the fluctuation range from the acquired pressure data are considered outliers; the number of outliers should be recorded. In the number of abnormal pressure data Less than or equal to Total number of stress data obtained When abnormal pressure data in the obtained pressure data meets the requirements, the abnormal pressure data is removed, and the average value of the non-abnormal pressure data is calculated. Dirt Thickness Index , This represents the percentage of the area covered by contaminants on the inner wall of the pipeline. To detect turbidity data, This represents the initial turbidity of the cleaning solution. To preset the turbidity threshold, and These are the weighting coefficients; Historical data is acquired, including the number of maintenance operations caused by blockages at various locations on the aquaculture pipeline. The blockage thickness and coverage area are obtained for each blockage. The blockage volume is obtained by multiplying the blockage thickness and coverage area. The blockage count and volume data are sorted from largest to smallest. The median value of each data point is taken. Positions where the blockage count or volume data is greater than the median value are marked. An image sensor is then placed at the marked position to acquire image data of the inner wall of the pipeline. Arrange the historical dirt thickness data in ascending order. and Set a dirt accumulation warning threshold at the location; if Less than The corresponding data at the location indicates a low level of dirt accumulation, which is within an acceptable range and requires no intervention; if Greater than If the data at a given location indicates a high level of fouling accumulation, an early warning will be triggered, and an active fouling prevention intervention mechanism will be activated. If the data falls between these two levels, it will be considered a moderate level of fouling accumulation, requiring an observation period and appropriate adjustments to operating parameters to inhibit further accumulation. The maximum blockage thickness for sorting. The total number of blockage thickness data obtained; The acquired image data is processed into grayscale, and the grayscale image is segmented according to the size of the image pixel blocks. The segmented image blocks are then numbered according to their row and column numbers in the grayscale image. The grayscale value data of the corresponding numbered image block is compared with the fluctuation range of the grayscale value data of the clean pipeline. If the grayscale value data of the corresponding numbered image block is not within the fluctuation range of the clean pipeline grayscale value data, it is determined that there is contaminant on the inner wall of the pipeline at that image block location. After determining the contaminant in all numbered image blocks in the acquired image, the ratio of the number of image blocks with contaminants to the total number of image blocks in the acquired image is calculated to obtain the percentage of contaminant coverage area on the inner wall of the pipeline. ; Flow resistance index , and These are the actual flow rate and the rated flow rate, respectively. and These are the actual pressure and the rated pressure, respectively. and The weighting coefficient is used to determine the degree of blockage by using the blockage volume data in historical data. Judgment nodes are set according to the same proportion of data to classify the degree of blockage. According to pollutant thickness level and congestion level The high, medium, and low classification indexes are 3, 2, and 1, respectively. Then determine the pollutant thickness correction factor. ;like Then determine the pollutant thickness correction factor. ;like Then determine the pollutant thickness correction factor. ;like Then determine the pollutant thickness correction factor. ;like Then determine the correction coefficient for the degree of congestion. ;like Then determine the correction coefficient for the degree of congestion. ;like Then determine the correction coefficient for the degree of congestion. ;like Then determine the correction coefficient for the degree of congestion. ; If the transfer pump 6 focuses on the thickness of the pollutant, then the output power of the transfer pump 6 will be... , The output power of the delivery pump 6 is the power output of the return pump 7 under rated operating conditions; the return pump 7 focuses on the degree of blockage, so the output power of the return pump 7 is... , and , The reference output power of the return pump 7 is used; the adjustment module adjusts the output power of the delivery pump 6 and the return pump 7 according to the thickness of the contaminants and the degree of blockage. Acquire data on flow rate, pressure, turbidity, and coverage area percentage across multiple aquaculture pipelines and cleaning cycles within a set time interval from the current time. Preprocess the data to determine the actual contaminant thickness. Fitting by least squares method , , obtained through fitting , Calculate the weighting coefficients and The weighting coefficients are obtained using the same method. and , The intercept term in the dirt thickness index regression model is obtained by fitting historical data.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pipe cleaning device for Haematococcus pluvialis cultivation, comprising a base frame (1), characterized in that: Multiple circulating cleaning tanks (2) are equidistantly installed on the top surface of the bottom frame (1). The bottom surface of the circulating cleaning tank (2) is provided with an outlet pipe (3). One end of the outlet pipe (3) is connected to a first solenoid valve pipe (4) through a flange. One end of multiple first solenoid valve pipes (4) is connected to a first connecting pipe (5) through a flange. One end of the first connecting pipe (5) is connected to the input end of a conveying pump (6) through a flange. The output end of the conveying pump (6) is provided with a first flange pipe for connecting to the aquaculture pipeline. An electrical control box is provided on one side of the top surface of the bottom frame (1). A column is installed on the bottom frame (1) at one side of the electrical control box. A return pump (7) is fixedly connected to the top of the column. The control box of the cleaning device is equipped with an intelligent control component, which includes an analysis module; The analysis module constructs a real-time monitoring and early warning model for the accumulation of fouling on the inner wall of the pipeline. Based on the proportion of pollutant coverage area on the inner wall of the pipeline and the change in normalized turbidity, the fouling thickness index is calculated to characterize the degree of fouling accumulation on the inner wall of the pipeline. The flow resistance index is calculated based on the deviation between the actual flow rate and the rated flow rate, as well as the deviation between the actual pressure and the rated pressure, to characterize the degree of impact of dirt accumulation on the flow performance of the pipeline. It sets early warning thresholds based on dirt thickness and volume information from historical data, and provides three levels of early warning for dirt accumulation: low, medium, and high. The corresponding anti-fouling intervention coefficient is calculated based on the fouling accumulation level and the flow resistance level. Then, the operating parameters of the delivery pump and the return pump are dynamically adjusted in combination with the weighting coefficient to achieve active intervention and inhibition in the early stage of fouling accumulation.

2. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 1, characterized in that: The steps for data analysis performed by the analysis module are as follows: M1: After sorting the collected corresponding data, calculate the mean and standard deviation, set the fluctuation range, and identify and remove outliers; acquire real-time image data through the pipeline inner wall image acquisition system, and after grayscale conversion and image segmentation processing, identify the dirt-covered area and calculate the proportion of dirt covering the pipeline inner wall. , serving as a fundamental characterization parameter for dirt accumulation; M2: Based on the coverage area percentage A dirt thickness index was constructed by measuring the turbidity change of the cleaning fluid in the return flow path. This is used to quantify the cumulative thickness of fouling on the inner wall of pipes; based on the flow and pressure deviations between the pipe inlet and outlet, a flow resistance index is constructed. It is used to assess the real-time impact of fouling accumulation on pipe flow performance; based on the fouling thickness and volume information in historical data, the regression coefficients are fitted by the least squares method and normalized to obtain the weight coefficients of the fouling thickness index and the flow resistance index.

3. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 1, characterized in that: The intelligent control component includes an adjustment module, and the execution steps of the adjustment module are as follows: Y1: Based on historical blockage thickness data, a judgment node is set to classify the contaminant thickness and blockage degree into three levels: low, medium, and high, and a corresponding level index is assigned. and According to the aforementioned grade index and Calculate the pollutant thickness correction factor and congestion correction factor ; Y2: Based on the correction coefficient and and preset weighting coefficients and The output power of the delivery pump and return pump can be dynamically adjusted.

4. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 1, characterized in that: The input end of the reflux pump (7) is provided with a second flange pipe for connecting to the aquaculture pipeline. The output end of the reflux pump (7) is connected to the inlet pipe of a four-way valve pipe (8) through a flange. The four-way pipes of the four-way valve pipe (8) are all connected to the reflux pipe (9) through flanges. One end of the reflux pipe (9) is connected to the second solenoid valve pipe (10) through a flange. One end of the second solenoid valve pipe (10) is connected to a filter assembly installed on the outer wall of the circulating cleaning tank (2) through a flange. The outer wall of one side of the filter assembly is provided with a second connecting pipe that communicates with the adjacent circulating cleaning tank (2).

5. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 1, characterized in that: The number of the multiple circulating cleaning tanks (2) is four, and the four circulating cleaning tanks (2) are, in order, a clean water tank, an acid water tank, an alkaline water tank, and a hot water tank.

6. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 4, characterized in that: The four-way valve pipe (8) is equipped with a third solenoid valve for controlling the flow of the internal pipeline.

7. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 4, characterized in that: The filter assembly includes a filter box (11) with an opening on the top surface. Two baffles (12) with staggered openings are symmetrically arranged on the inner wall of the filter box (11). The top surfaces of the two baffles (12) have first threaded holes. A top cover is installed on the upper end of the inner wall of the filter box (11). Two first fixing bolts that are screwed into the first threaded holes on the top surfaces of the two baffles (12) are symmetrically arranged on the top cover. Multiple dovetail grooves are equidistantly opened on the bottom surface of the top cover. A filter bag (13) is slidably connected at the position of the dovetail groove on the top cover.

8. The pipe cleaning device for Haematococcus pluvialis cultivation according to claim 7, characterized in that: The filter bag (13) is fixed to the top of a T-shaped fixing strip, and a plurality of second threaded holes are equally spaced on one side of the T-shaped fixing strip.

9. A pipe cleaning device for Haematococcus pluvialis cultivation according to claim 7, characterized in that: A dovetail block (14) is slidably provided in the dovetail groove. Two L-shaped plates are mirrored on the bottom surface of the dovetail block (14). The T-shaped fixing strip is slidably provided in the two L-shaped plates. Multiple through holes corresponding to the second threaded hole are opened on the two L-shaped plates. A second fixing bolt is screwed between the second threaded hole and the through hole.

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