Laminated filter backwash state simulation model optimization construction system and method

Abstract

This invention discloses a system and method for optimizing a simulation model of a disc filter's backwashing state. The system includes a disc filter, a hydraulic performance monitoring module, a disc motion monitoring module, and a data analysis module. The hydraulic performance monitoring module is installed on the water pipe of the disc filter, and both the hydraulic performance monitoring module and the disc motion monitoring module are connected to the data analysis module. The hydraulic performance monitoring module measures the actual hydraulic performance parameters of the disc filter's inlet and outlet, the disc motion monitoring module measures the actual motion parameters of the disc filter, and the data analysis module rapidly constructs a high-precision simulation model of the target disc filter's backwashing state based on the actual hydraulic performance parameters and actual motion parameters. This allows for analysis of the internal flow field distribution characteristics of the disc filter under backwashing conditions, thereby achieving structural optimization of the disc filter.

Description

Technical Field

[0001] This invention relates to the field of drip irrigation technology, and in particular to a system and method for optimizing and constructing a simulation model of the backwashing state of a disc filter. Background Technology

[0002] Filters are a crucial component of drip irrigation systems. Disc filters, with their advantages of corrosion resistance, durability, compact structure, and ease of backwashing, are the most widely used in drip irrigation systems. In filtration mode, the 400-600 discs in the disc filter are tightly fitted together by a pressure cap and springs, forming several flow channels. When the blockage in these channels gradually increases and the pressure difference between the inlet and outlet of the disc filter reaches a set value, the backwashing function is activated. The pressure cap moves in the opposite direction to the disc body under water pressure, loosening the disc body. Several discs rotate under the flushing action of the water flow, carrying away the blockage material from the flow channels through the drain outlet. After a period of backwashing, the backwashing function is deactivated, and the pressure cap moves back towards the disc body under the action of the springs, pressing the disc body shut. Currently, computational fluid dynamics numerical simulation is mainly used to simulate the hydraulic performance of the flow channels on the discs, enabling structural optimization of the disc filter in filtration mode to improve filtration efficiency and reduce cleaning pressure drop. However, for the backwashing effect of disc filters, constructing a hydraulic performance simulation model of 400-600 discs in the disc body using computational fluid dynamics requires high computing power, has low computational efficiency, and is difficult to implement. As a result, the structural optimization of disc filters under backwashing conditions is still a blank, with few literature reports. The backwashing pressure and backwashing efficiency of domestic disc filters are both lower than those of imported ones. Summary of the Invention

[0003] This invention provides a system and method for constructing a simulation model of a disc filter under backwashing conditions, which can quickly and accurately construct a simulation model of a disc filter under backwashing conditions, thereby analyzing the internal flow field distribution characteristics of the disc filter under backwashing conditions and providing a basis for the structural optimization of the disc filter.

[0004] In a first aspect, embodiments of the present invention provide a system for optimizing and constructing a simulation model of the backwashing state of a disc filter. The system includes a disc filter, a hydraulic performance monitoring module, a disc motion monitoring module, and a data analysis module. The hydraulic performance monitoring module is installed on the water pipe of the disc filter, and both the hydraulic performance monitoring module and the disc motion monitoring module are connected to the data analysis module. The hydraulic performance monitoring module is used to measure the actual hydraulic performance parameters of the inlet and outlet of the disc filter, the disc motion monitoring module is used to measure the actual motion parameters of the disc filter, and the data analysis module is used to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, so as to analyze the internal flow field distribution characteristics of the disc filter under backwashing state.

[0005] Optionally, the disc filter includes a disc body, a pressure cap, a disc body housing, an inlet pipe, an outlet pipe, and a drain pipe; The pressure cap is installed on the top of the stacked plate body. The stacked plate body and the pressure cap are sealed in the closed space formed by the outer shell of the stacked plate body and the inlet and outlet of the stacked plate body. The inlet pipe, the outlet pipe and the sewage pipe are all connected to the inlet and outlet of the stacked plate body.

[0006] Optionally, the hydraulic performance monitoring module includes an inlet flow sensor, an outlet flow sensor, a sewage outlet flow sensor, an inlet pressure sensor, and an outlet pressure sensor; The inlet flow sensor and the inlet pressure sensor are installed on the inlet pipe, the outlet pressure sensor and the outlet flow sensor are installed on the outlet pipe, and the drain outlet flow sensor is installed on the drain pipe.

[0007] Optionally, the stacked plate motion monitoring module includes a displacement sensor, a high-speed camera, and a rotation speed sensor; The displacement sensor is disposed on the pressure cap side of the disc filter, and the displacement sensor is used to measure the axial movement distance of the pressure cap before and after the backwashing state of the disc filter; The high-speed camera and the rotation speed sensor are disposed on the circumferential side of the stacked filter. The high-speed camera is used to acquire images of the stacked filter body in the backwashing state, and the rotation speed sensor is used to acquire the rotation speed of each stack of the stacked filter body in the backwashing state.

[0008] Optionally, the data analysis module includes a host computer; The host computer is used to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, so as to analyze the internal flow field distribution characteristics of the disc filter under the backwashing state.

[0009] Secondly, embodiments of the present invention also provide a method for optimizing and constructing a simulation model of the backwashing state of a disc filter. This method is executed using the system for optimizing and constructing a simulation model of the backwashing state of a disc filter provided in any embodiment of the present invention. The method for optimizing the simulation model of the backwashing state of the disc filter includes: The hydraulic performance monitoring module measures the actual hydraulic performance parameters of the inlet and outlet of the disc filter. The disc motion monitoring module measures the actual motion parameters of the disc filter; The data analysis module constructs a simulation model of the target disc filter backwashing state based on the actual hydraulic performance parameters and the actual motion parameters, in order to analyze the internal flow field distribution characteristics of the disc filter under backwashing state.

[0010] Optionally, the disc filter includes a disc body, a pressure cap, a disc body housing, an inlet pipe, an outlet pipe, and a drain pipe; the pressure cap is installed on the top of the disc body, and the disc body and the pressure cap are sealed within the enclosed space formed by the disc body housing and the inlet and outlet of the disc body; the inlet pipe, the outlet pipe, and the drain pipe are all connected to the inlet and outlet of the disc body. The actual hydraulic performance parameters include actual inlet flow rate, actual outlet flow rate, actual sewage outlet flow rate, actual inlet pressure, and actual outlet pressure; The actual motion parameters include the axial movement distance of the pressure cap before and after the backwashing state of the disc filter, the image of the disc body of the disc filter in the backwashing state, and the rotational speed of each disc of the disc body of the disc filter in the backwashing state.

[0011] Optionally, the data analysis module constructs a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, including: Based on the size data of the disc filter and the actual motion parameters, a simulation model of the initial backwashing state of the disc filter and the extraction fluid domain are constructed under the backwashing state. The fluid domain of the initial stacked filter backwashing state simulation model is spatially discretized; Set the meshing method, fluid domain material, turbulence model, boundary conditions, solution algorithm, and grouped porosity of the stacked body of the initial stacked filter backwashing state simulation model to obtain the simulation model of the stacked filter backwashing state to be adjusted. The actual inlet flow rate is input into the backwashing state simulation model of the disc filter to be adjusted to obtain theoretical hydraulic performance parameters. The backwashing state simulation model of the disc filter to be adjusted is obtained by adjusting the theoretical hydraulic performance parameters, the actual hydraulic performance parameters, and the actual motion parameters.

[0012] Optionally, a simulation model of the initial backwashing state of the disc filter under backwashing conditions is constructed based on the size data of the disc filter and the actual motion parameters, including: An external model of the stacked filter is constructed based on the size data of the stacked filter; Based on the actual motion parameters, the grouping parameters of the stacked body are determined, and the stacked body model is constructed. By combining the external model of the disc filter and the disc body model, a simulation model of the initial backwashing state of the disc filter is obtained.

[0013] Optionally, adjusting the backwashing state simulation model of the disc filter to be adjusted based on the theoretical hydraulic performance parameters, the actual hydraulic performance parameters, and the actual motion parameters to obtain the backwashing state simulation model of the target disc filter includes: If the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is greater than the first threshold, then the simulation model of the backwashing state of the disc filter to be adjusted and the grouped porosity are readjusted according to the actual motion parameters, and the process returns to the step of obtaining the theoretical hydraulic performance parameters. If the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is less than or equal to a first threshold, then the current simulation model of the backwashing state of the disc filter to be adjusted is the simulation model of the backwashing state of the target disc filter.

[0014] In this embodiment of the invention, the hydraulic performance monitoring module measures the actual hydraulic performance parameters of the inlet and outlet of the disc filter, and the disc motion monitoring module measures the actual motion parameters of the disc filter. This allows the data analysis module to construct a simulation model of the target disc filter's backwashing state based on the actual hydraulic performance parameters and the actual motion parameters. This simulation model accurately reflects the actual backwashing state of the disc filter, enabling precise analysis of the internal flow field distribution characteristics of the disc filter under backwashing conditions, and providing a basis for optimizing the disc filter structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a system for optimizing and constructing a simulation model of the backwashing state of a disc filter, provided in an embodiment of the present invention. Figure 2This is a partial structural diagram of a system for optimizing and constructing a simulation model of the backwashing state of a disc filter, provided in an embodiment of the present invention. Figure 3 A partial structural schematic diagram of another stacked filter backwashing state simulation model optimization construction system provided in this embodiment of the invention; Figure 4 A flowchart illustrating a method for optimizing and constructing a simulation model of the backwashing state of a disc filter, provided in an embodiment of the present invention; Figure 5 A flowchart illustrating the steps of a data analysis module to construct a simulation model of the backwashing state of a target disc filter based on actual hydraulic performance parameters and actual motion parameters, as provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the disc filter in the backwashing state provided by an embodiment of the present invention; Figure 7 This is a schematic diagram of the disc filter in a backwashing state according to an embodiment of the present invention; Figure 8 This invention provides a stacking grouping table for an embodiment of the present invention. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] my country boasts the world's largest application of drip irrigation technology. Filters are the core components of drip irrigation systems, and disc filters are the most widely used due to their advantages such as corrosion resistance, durability, compact structure, and ease of backwashing. Head loss and backwashing efficiency are important indicators characterizing the backwashing performance of disc filters, but they have been neglected by scholars and manufacturers both domestically and internationally because the disc assembly is loose during backwashing, making it difficult to effectively depict its motion. To address this, this invention provides a disc filter backwashing state simulation model optimization system to accurately and quickly construct a simulation model of the target disc filter's backwashing state. Furthermore, by analyzing the internal flow field distribution characteristics of the disc filter under backwashing conditions, it provides technical support for the filter's structural design and performance optimization.

[0020] Figure 1 This is a schematic diagram of a system for optimizing and constructing a simulation model of the backwashing state of a disc filter, as provided in an embodiment of the present invention. Figure 1 As shown, the simulation model optimization system for the backwashing state of the disc filter includes a disc filter 10, a hydraulic performance monitoring module 20, a disc motion monitoring module 30, and a data analysis module 40. The hydraulic performance monitoring module 20 is installed on the water pipe of the disc filter 10, and both the hydraulic performance monitoring module 20 and the disc motion monitoring module 30 are connected to the data analysis module 40. The hydraulic performance monitoring module 20 is used to measure the actual hydraulic performance parameters of the inlet and outlet of the disc filter 10, the disc motion monitoring module 30 is used to measure the actual motion parameters of the disc filter 10, and the data analysis module 40 is used to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, so as to analyze the internal flow field distribution characteristics of the disc filter 10 under the backwashing state.

[0021] The disc filter 10 is a high-efficiency, precise, and automatically backwashable physical filtration device that effectively traps solid impurities in water, protects downstream equipment, and stabilizes water quality. The hydraulic performance monitoring module 20 can measure the actual hydraulic performance parameters of the disc filter 10's water path in real time, such as the inlet flow rate, inlet pressure, outlet flow rate, outlet pressure, and drain flow rate. The disc motion monitoring module 30 can monitor the actual motion parameters of the disc filter 10 during backwashing, such as the axial movement distance of the pressure cap before and after backwashing, the image of the disc body during backwashing, and the rotational speed of each or several discs during backwashing. The data analysis module 40 can summarize the spatial distribution characteristics of the motion state of the disc filter 10 under backwashing conditions based on actual motion parameters. This allows it to divide the disc body, composed of hundreds of discs, into several groups with different spatial distribution characteristics (the discs within the same group have similar or identical spatial distribution characteristics). This reduces the difficulty of constructing the disc body, lowers the computing power required by the data analysis module 40, and improves simulation efficiency. Furthermore, the data analysis module 40 can use actual hydraulic performance parameters as evaluation data for constructing the disc filter backwashing state simulation model. This verifies the accuracy of the simulation model and, if the accuracy is unsatisfactory, readjusts the disc body construction until a highly accurate target disc filter backwashing state simulation model is obtained (the target model accurately depicts the actual disc filter under backwashing conditions). After constructing the target model, the data analysis module 40 can analyze it to obtain the internal flow field distribution characteristics of the disc filter 10 under backwashing conditions. Specifically, the internal flow field distribution characteristics of the disc filter under backwashing conditions include pressure field distribution characteristics, velocity field distribution characteristics, and turbulent kinetic energy field distribution characteristics. Among these, the pressure field distribution characteristics can be used to optimize the inlet and outlet channels and water distribution structure of the disc filter, reducing local high-pressure zones and pressure losses, and improving the backwashing driving capability. The velocity field distribution characteristics can be used to adjust the disc gaps and flow guiding structure, making the overall flow velocity more uniform, thereby eliminating low-velocity stagnation zones and enhancing the flushing and removal of impurities. The turbulent kinetic energy field distribution characteristics can be used to optimize the disc filter housing and flow guiding component configuration, strengthening the effective turbulent area of ​​the disc filter and improving the backwashing intensity and cleaning efficiency. Therefore, by analyzing the internal flow field distribution characteristics of the disc filter 10 under backwashing conditions, precise data can be provided for the structural optimization of the disc filter 10, thereby achieving structural optimization of the disc filter 10.

[0022] In this embodiment of the invention, the hydraulic performance monitoring module 20 measures the actual hydraulic performance parameters of the inlet and outlet of the disc filter 10, and the disc motion monitoring module 30 measures the actual motion parameters of the disc filter 10. This allows the data analysis module 40 to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters. This simulation model can accurately reflect the backwashing state of the actual disc filter 10, and accurately analyze the internal flow field distribution characteristics of the disc filter 10 under backwashing conditions, providing a basis for optimizing the disc filter structure.

[0023] Based on the above embodiments, optionally, Figure 2 This is a partial structural diagram of a system for optimizing a simulation model of the backwashing state of a disc filter, provided in an embodiment of the present invention. Figure 2 As shown, the disc filter 10 includes a disc body 11, a pressure cap 12, a disc body housing 13, an inlet pipe 14, an outlet pipe 15, and a drain pipe 16; The pressure cap 12 is installed on the top of the stacked plate body 11. The stacked plate body 11 and the pressure cap 12 are sealed in the closed space formed by the stacked plate body shell 13 and the inlet and outlet of the stacked plate body 11. The inlet pipe 14, the outlet pipe 15 and the drain pipe 16 are all connected to the inlet and outlet of the stacked plate body 11.

[0024] The top of the stacked plate body 11 is the end away from the inlet and outlet. The inlet and outlet of the stacked plate body 11 includes an inlet, an outlet and a drain outlet. The inlet of the stacked plate body 11 is connected to the inlet pipe 14, the outlet of the stacked plate body 11 is connected to the outlet pipe 15, and the drain outlet of the stacked plate body 11 is connected to the drain pipe 16.

[0025] Specifically, water flows into the disc filter 10 through the inlet pipe 14. In the filtration state, the disc body 11 formed by 400 to 600 discs in the disc filter 10 is tightly fitted under the action of the pressure cap 12 and the spring, forming several filtration channels. After the water enters the disc filter 10 for filtration, it flows out through the outlet pipe 15. When the degree of blockage in the flow channel gradually increases and the pressure difference between the inlet and outlet of the disc filter 10 reaches the set value, the backwashing function is activated. Under the action of water pressure, the pressure cap 12 moves in the opposite direction to the disc body 11, the disc body 11 is released, and several discs rotate under the flushing action of the water flow, carrying the blockage material on the flow channel out through the drain pipe 16.

[0026] Based on the above embodiments, alternatively, refer to the following: Figure 2 The hydraulic performance monitoring module 20 includes an inlet flow sensor 21, an outlet flow sensor 22, a sewage outlet flow sensor 23, an inlet pressure sensor 24, and an outlet pressure sensor 25. The inlet flow sensor 21 and the inlet pressure sensor 24 are installed on the inlet pipe 14, the outlet pressure sensor 25 and the outlet flow sensor 22 are installed on the outlet pipe 15, and the sewage outlet flow sensor 23 is installed on the sewage outlet pipe 16.

[0027] Among them, the inlet flow sensor 21 is used to measure the flow rate of the inlet pipe 14 of the disc filter 10, the outlet flow sensor 22 is used to measure the flow rate of the outlet pipe 15 of the disc filter 10, the sewage outlet flow sensor 23 is used to measure the flow rate of the sewage outlet pipe 16 of the disc filter 10, the inlet pressure sensor 24 is used to measure the pressure of the inlet pipe 14 of the disc filter 10, and the outlet pressure sensor 25 is used to measure the pressure of the outlet pipe 15 of the disc filter 10.

[0028] Optionally, based on the above embodiments, Figure 3 This is a partial structural diagram of a system for optimizing the simulation model of the backwashing state of a disc filter, as provided in an embodiment of the present invention. Figure 3 As shown, the disc motion monitoring module 30 includes a displacement sensor 31, a high-speed camera 32, and a rotation speed sensor 33; the displacement sensor 31 is disposed on the pressure cap 12 side of the disc filter 10, and the displacement sensor 31 is used to measure the axial movement distance of the pressure cap 12 before and after the backwashing state of the disc filter 10. A high-speed camera 32 and a rotation speed sensor 33 are disposed on the circumferential side of the laminated filter 10. The high-speed camera 32 is used to acquire images of the laminated filter 10 in the backwashing state, and the rotation speed sensor 33 is used to acquire the rotation speed of each laminate in the laminated filter 10 in the backwashing state. In addition, if the measurement range and accuracy of the rotation speed sensor 33 are limited, it can measure the rotation speed of several laminates in the laminated filter 10 in the backwashing state.

[0029] Based on the above embodiments, alternatively, refer to the following: Figure 1 and Figure 3 The data analysis module 40 includes a host computer; The host computer is used to construct a simulation model of the target disc filter backwashing state based on the actual hydraulic performance parameters and actual motion parameters, so as to analyze the internal flow field distribution characteristics of the disc filter 10 under backwashing state.

[0030] The actual hydraulic performance parameters include the actual inlet flow rate, actual outlet flow rate, actual sewage outlet flow rate, actual inlet pressure, and actual outlet pressure; the actual motion parameters include the axial movement distance of the pressure cap 12 before and after the backwashing state of the disc filter 10, the image of the disc body 11 of the disc filter 10 in the backwashing state, and the rotational speed of each disc of the disc body 11 of the disc filter 10 in the backwashing state.

[0031] The host computer can obtain the spatial distribution characteristics of each stack of plates from the image, that is, the distance between adjacent stacks. Specifically, the axial movement distance of the pressure cap 12 before and after backwashing the stacked filter 10 is equal to the sum of the distances between all adjacent stacks during backwashing. Therefore, based on the axial movement distance of the pressure cap 12 before and after backwashing the stacked filter 10, the image of the stacked filter 10 stacked body 11 during backwashing, and the rotational speed of each or several stacks of the stacked filter 10 stacked body 11 during backwashing, the host computer can analyze and obtain the spatial distribution characteristics of the real-time rotational speed of all stacks and the spatial distribution characteristics of the distance between adjacent stacks. This simplifies the construction of the stacked body 11, thereby simplifying the construction of the stacked filter 10, reducing the construction difficulty of the stacked body 11, reducing the computing power required by the data analysis module 40, and improving simulation efficiency. Furthermore, the host computer can use actual hydraulic performance parameters as evaluation data for the constructed disc filter backwashing state simulation model to verify its accuracy. If the accuracy is unsatisfactory, the construction of the disc body 11 can be readjusted until a highly accurate target disc filter backwashing state simulation model is obtained. After constructing the target disc filter backwashing state simulation model, the host computer can analyze it to obtain the internal flow field distribution characteristics of the disc filter 10 under backwashing conditions. This provides accurate data for the structural optimization of the disc filter 10, thereby achieving structural optimization of the disc filter 10.

[0032] The internal flow field distribution characteristics of a disc filter under backwashing conditions include pressure field distribution characteristics, velocity field distribution characteristics, and turbulent kinetic energy field distribution characteristics. Specifically, the pressure field distribution characteristics can optimize the inlet and outlet channels and water distribution structure of the disc filter, reducing local high-pressure zones and pressure losses, and improving the backwashing driving capability. The velocity field distribution characteristics can adjust the disc gaps and flow guiding structure, making the overall flow velocity more uniform, thereby eliminating low-velocity stagnation zones and enhancing the flushing and removal of impurities. The turbulent kinetic energy field distribution characteristics can optimize the disc filter housing and flow guiding component configuration, strengthening the effective turbulent area of ​​the disc filter and improving the backwashing intensity and cleaning efficiency.

[0033] Figure 4 This is a flowchart illustrating a method for optimizing and constructing a simulation model of the backwashing state of a disc filter according to an embodiment of the present invention. Figure 4 As shown, the method for optimizing and constructing the simulation model of the backwashing state of the disc filter is executed using the system for optimizing and constructing the simulation model of the backwashing state of the disc filter provided in any embodiment of the present invention. The specific methods for optimizing the simulation model of the backwashing state of disc filters include: S110, the hydraulic performance monitoring module measures the actual hydraulic performance parameters of the inlet and outlet of the disc filter.

[0034] S120, the disc motion monitoring module measures the actual motion parameters of the disc filter.

[0035] S130 The data analysis module constructs a simulation model of the target disc filter backwashing state based on the actual hydraulic performance parameters and actual motion parameters, in order to analyze the internal flow field distribution characteristics of the disc filter under backwashing state.

[0036] In this embodiment of the invention, the hydraulic performance monitoring module measures the actual hydraulic performance parameters of the inlet and outlet of the disc filter, and the disc motion monitoring module measures the actual motion parameters of the disc filter. This allows the data analysis module to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters. This simulation model can accurately reflect the backwashing state of the actual disc filter, and the internal flow field distribution characteristics of the disc filter under backwashing state can be accurately analyzed through the simulation model, providing a basis for the optimization of the disc filter structure.

[0037] Based on the above embodiments, optionally, the disc filter includes a disc body, a pressure cap, a disc body shell, an inlet pipe, an outlet pipe, and a drain pipe; the pressure cap is installed on the top of the disc body, and the disc body and the pressure cap are sealed in the closed space formed by the disc body shell and the inlet and outlet of the disc body; the inlet pipe, the outlet pipe, and the drain pipe are all connected to the inlet and outlet of the disc body. Actual hydraulic performance parameters include actual inlet flow rate, actual outlet flow rate, actual sewage outlet flow rate, actual inlet pressure, and actual outlet pressure; The actual motion parameters include the axial movement distance of the pressure cap before and after the backwashing state of the disc filter, the image of the disc body of the disc filter in the backwashing state, and the rotational speed of each disc of the disc body of the disc filter in the backwashing state.

[0038] Based on the above embodiments, optionally, Figure 5 This is a flowchart illustrating the steps of a data analysis module in an embodiment of the present invention to construct a simulation model of the backwashing state of a target disc filter based on actual hydraulic performance parameters and actual motion parameters. Figure 5 The steps for constructing a simulation model of the backwashing state of the target disc filter based on actual hydraulic performance parameters and actual motion parameters are illustrated below: S210. Based on the size data and actual motion parameters of the disc filter, construct an initial backwashing state simulation model of the disc filter and an extraction fluid domain under backwashing conditions.

[0039] Specifically, a simulation model of the initial backwashing state of the disc filter is constructed based on the size data and actual motion parameters of the disc filter. This includes: constructing an external model of the disc filter based on the size data of the disc filter; determining the grouping parameters of the disc body based on the actual motion parameters and constructing a disc body model; and combining the external model and the disc body model of the disc filter to obtain the simulation model of the initial backwashing state of the disc filter.

[0040] The grouping parameters include the number of stacks of the stack, the thickness of each stack, and the distance between adjacent stacks.

[0041] For example, Figure 6 This is a schematic diagram of the disc filter in the backwashing state according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the disc filter in a backwashing state, provided by an embodiment of the present invention. Figure 6 and Figure 7 It can be seen that the laminates are divided into N groups, and the thickness of each group is TH. j , , i≤N; the spacing between adjacent stacks is l j , , i≤N. The number of groups N and the TH values ​​of stacked groups at different positions. i Spacing l between adjacent stacks i The settings are based on the distance between adjacent laminations and the rotational speed distribution characteristics of each lamination. For example, the grouping criteria can be to group laminations whose distance between adjacent laminations is less than a preset distance threshold and whose rotational speed difference between adjacent laminations is less than a preset rotational speed threshold into one group.

[0042] For example, Figure 8 A stacked wafer grouping table is provided for embodiments of the present invention, such as Figure 8 As shown, the rotational speeds of the stacked bodies can be divided into five gradients: r1=274 r / min, r2=270 r / min, r3=268 r / min, r4=154 r / min, r5=50 r / min, corresponding to l1=9.08 mm, l2=8.92 mm, l3=5.89 mm, l4=3.13 mm, TH1=28.59 mm, TH2=50.96 mm, TH3=83.28 mm, TH4=103.17 mm, and TH5=135.49 mm.

[0043] S220. Spatial discretization of the fluid domain of the initial stacked filter backwashing state simulation model.

[0044] When spatially discretizing the fluid domain of the initial stacked filter backwashing state simulation model, it is necessary to set the grid type, size, boundary layer thickness, etc., to generate a three-dimensional model calculation grid.

[0045] S230. Set the meshing method, fluid domain material, turbulence model, boundary conditions, solution algorithm, and grouped porosity of the stacked filter backwashing state simulation model to obtain the simulation model of the stacked filter backwashing state to be adjusted. For example, the fluid domain material is set as liquid water, and the N sets of laminates are set as porous media, with each set of laminates having a porosity of ε. j .

[0046] S240. Input the actual inlet flow rate into the simulation model of the backwashing state of the disc filter to be adjusted to obtain the theoretical hydraulic performance parameters.

[0047] The theoretical hydraulic performance parameters include the theoretical outlet flow rate, the theoretical sewage outlet flow rate, the theoretical inlet pressure, and the theoretical outlet pressure.

[0048] S250. Adjust the simulation model of the backwashing state of the disc filter to be adjusted according to the theoretical hydraulic performance parameters, actual hydraulic performance parameters and actual motion parameters, and obtain the simulation model of the backwashing state of the target disc filter.

[0049] Specifically, if the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is greater than the first threshold, the simulation model of the backwashing state of the disc filter to be adjusted and the grouped porosity are readjusted according to the actual motion parameters, and the process returns to the step of obtaining the theoretical hydraulic performance parameters. If the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is less than or equal to the first threshold, then the current simulation model of the backwashing state of the disc filter to be adjusted is the simulation model of the backwashing state of the target disc filter.

[0050] For example, if the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is greater than a first threshold, the number N of the laminated groups and the thickness TH of each laminated group are adjusted by the actual motion parameters. j Spacing between adjacent stacks l j The porosity ε of each stack of laminations jThe disc body grouping corresponding to the minimum difference between theoretical and actual hydraulic performance parameters yields the highest simulation accuracy and is the optimal simulation model for the backwashing state of the target disc filter. Through trial calculations, when N=5; l1=9.08 mm, l2=8.92 mm, l3=5.89 mm, l4=3.13 mm; TH1=28.59 mm, TH2=50.96 mm, TH3=83.28 mm, TH4=103.17 mm, TH5=135.49 mm, the optimal grouping is determined. mm; when ε1=0.8, ε2=0.78, ε3=0.64, ε4=0.51, ε5=0.45, the differences between theoretical and actual outlet flow rates, theoretical and actual discharge outlet flow rates, theoretical and actual inlet pressures, and theoretical and actual outlet pressures are the smallest, at 8.8%, 5.2%, 9.3%, and 7.7%, respectively.

[0051] In summary, the simulation and optimization method for measuring backwashing state parameters of disc filters provided by this invention can quantitatively determine the spatial distribution characteristics of the spacing and rotational speed of the dispersed discs under backwashing conditions through a hydraulic performance monitoring module and a disc motion monitoring module. By monitoring several actual motion parameters of the discs through a data analysis module, the disc body can be scientifically grouped, simplified, and parameter-set, thereby accurately depicting the distribution characteristics of the disc body under backwashing conditions. This significantly reduces the computational load, accurately constructs a simulation model of the target disc filter under backwashing conditions, reveals the internal flow field distribution characteristics of the disc filter during backwashing, and provides technical support for the structural design and performance optimization of disc filters.

[0052] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0053] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A system for optimizing and constructing a simulation model of the backwashing state of a disc filter, characterized in that, It includes a disc filter, a hydraulic performance monitoring module, a disc motion monitoring module, and a data analysis module; The hydraulic performance monitoring module is installed on the water pipe of the disc filter, and both the hydraulic performance monitoring module and the disc motion monitoring module are connected to the data analysis module. The hydraulic performance monitoring module is used to measure the actual hydraulic performance parameters of the inlet and outlet of the disc filter, the disc motion monitoring module is used to measure the actual motion parameters of the disc filter, and the data analysis module is used to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, so as to analyze the internal flow field distribution characteristics of the disc filter under backwashing state.

2. The system for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 1, characterized in that, The disc filter includes a disc body, a pressure cap, a disc body shell, an inlet pipe, an outlet pipe, and a drain pipe; The pressure cap is installed on the top of the stacked plate body. The stacked plate body and the pressure cap are sealed in the closed space formed by the outer shell of the stacked plate body and the inlet and outlet of the stacked plate body. The inlet pipe, the outlet pipe and the sewage pipe are all connected to the inlet and outlet of the stacked plate body.

3. The system for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 2, characterized in that, The hydraulic performance monitoring module includes an inlet flow sensor, an outlet flow sensor, a sewage outlet flow sensor, an inlet pressure sensor, and an outlet pressure sensor. The inlet flow sensor and the inlet pressure sensor are installed on the inlet pipe, the outlet pressure sensor and the outlet flow sensor are installed on the outlet pipe, and the drain outlet flow sensor is installed on the drain pipe.

4. The system for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 2, characterized in that, The stacked plate motion monitoring module includes a displacement sensor, a high-speed camera, and a rotation speed sensor; The displacement sensor is disposed on the pressure cap side of the disc filter, and the displacement sensor is used to measure the axial movement distance of the pressure cap before and after the backwashing state of the disc filter; The high-speed camera and the rotation speed sensor are disposed on the circumferential side of the stacked filter. The high-speed camera is used to acquire images of the stacked filter body in the backwashing state, and the rotation speed sensor is used to acquire the rotation speed of each stack of the stacked filter body in the backwashing state.

5. The system for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 1, characterized in that, The data analysis module includes a host computer; The host computer is used to construct a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, so as to analyze the internal flow field distribution characteristics of the disc filter under the backwashing state.

6. A method for optimizing and constructing a simulation model of the backwashing state of a disc filter, characterized in that, The system execution is optimized using the simulation model of the backwashing state of the disc filter as described in any one of claims 1-5; The method for optimizing the simulation model of the backwashing state of the disc filter includes: The hydraulic performance monitoring module measures the actual hydraulic performance parameters of the inlet and outlet of the disc filter. The disc motion monitoring module measures the actual motion parameters of the disc filter; The data analysis module constructs a simulation model of the target disc filter backwashing state based on the actual hydraulic performance parameters and the actual motion parameters, in order to analyze the internal flow field distribution characteristics of the disc filter under backwashing state.

7. The method for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 6, characterized in that, The disc filter includes a disc body, a pressure cap, a disc body shell, an inlet pipe, an outlet pipe, and a drain pipe; the pressure cap is installed on the top of the disc body, and the disc body and the pressure cap are sealed in a closed space formed by the disc body shell and the inlet and outlet of the disc body; the inlet pipe, the outlet pipe, and the drain pipe are all connected to the inlet and outlet of the disc body. The actual hydraulic performance parameters include actual inlet flow rate, actual outlet flow rate, actual sewage outlet flow rate, actual inlet pressure, and actual outlet pressure; The actual motion parameters include the axial movement distance of the pressure cap before and after the backwashing state of the disc filter, the image of the disc body of the disc filter in the backwashing state, and the rotational speed of each disc of the disc body of the disc filter in the backwashing state.

8. The method for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 7, characterized in that, The data analysis module constructs a simulation model of the backwashing state of the target disc filter based on the actual hydraulic performance parameters and the actual motion parameters, including: Based on the size data of the disc filter and the actual motion parameters, a simulation model of the initial backwashing state of the disc filter and the extraction fluid domain are constructed under the backwashing state. The fluid domain of the initial stacked filter backwashing state simulation model is spatially discretized; Set the meshing method, fluid domain material, turbulence model, boundary conditions, solution algorithm, and grouped porosity of the stacked body of the initial stacked filter backwashing state simulation model to obtain the simulation model of the stacked filter backwashing state to be adjusted. The actual inlet flow rate is input into the backwashing state simulation model of the disc filter to be adjusted to obtain theoretical hydraulic performance parameters. The backwashing state simulation model of the disc filter to be adjusted is obtained by adjusting the theoretical hydraulic performance parameters, the actual hydraulic performance parameters, and the actual motion parameters.

9. The method for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 8, characterized in that, Based on the size data of the disc filter and the actual motion parameters, an initial backwashing state simulation model of the disc filter under backwashing conditions is constructed, including: An external model of the stacked filter is constructed based on the size data of the stacked filter; Based on the actual motion parameters, the grouping parameters of the stacked body are determined, and the stacked body model is constructed. By combining the external model of the disc filter and the disc body model, a simulation model of the initial backwashing state of the disc filter is obtained.

10. The method for optimizing and constructing a simulation model of the backwashing state of a disc filter according to claim 8, characterized in that, Adjusting the backwashing state simulation model of the disc filter to be adjusted based on the theoretical hydraulic performance parameters, the actual hydraulic performance parameters, and the actual motion parameters, to obtain the backwashing state simulation model of the target disc filter, including: If the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is greater than the first threshold, then the simulation model of the backwashing state of the disc filter to be adjusted and the grouped porosity are readjusted according to the actual motion parameters, and the process returns to the step of obtaining the theoretical hydraulic performance parameters. If the difference between the theoretical hydraulic performance parameters and the actual hydraulic performance parameters is less than or equal to a first threshold, then the current simulation model of the backwashing state of the disc filter to be adjusted is the simulation model of the backwashing state of the target disc filter.

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