CN-122021321-A - Design method for in-situ separation treatment of urine and fecal flushing water

CN122021321ACN 122021321 ACN122021321 ACN 122021321ACN-122021321-A

Abstract

The invention discloses a design method for in-situ separation treatment of urine and fecal flushing water, which relates to the technical field of computer aided design and comprises the steps of collecting physical parameters of the urine and fecal flushing water, inputting the physical parameters into a digital twin model, and outputting a metabolite virtual component spectrum; the radiation dosage of the water outlet of the filtering area and the beta-ray activity concentration in the decay pool are monitored in real time, when the radiation dosage is continuously lower than a preset safety threshold and the beta-ray activity concentration decays to an emission standard, a water body standard verification signal is generated, the water body standard verification signal is input into a federal learning optimizer, a digital twin model is dynamically updated, and closed-loop optimization is completed. According to the invention, the digital twin model is used for fusing multisource physical parameters in real time and deeply mining dynamic association characteristics, so that high-precision space-time field reconstruction of nuclide concentration distribution and solid load rate in radioactive excrement is realized.

Inventors

Pan dongsheng
Liu Jingbu

Assignees

中辐核安医疗科技(苏州)有限公司

Dates

Publication Date: 20260512
Application Date: 20260203

Claims (10)

1. A design method for in-situ separation treatment of urine and fecal flushing water is characterized by comprising the following steps of, Collecting physical parameters of urine and fecal flushing water, inputting the physical parameters into a digital twin model, and outputting a metabolite virtual component spectrum; according to the virtual component spectrum of the metabolite, simulating a urine particle diffusion path through a cellular automaton model, outputting an optimal baffle bending angle instruction, and calculating a vacuum negative pressure gradient parameter through a fluid dynamics model; According to the optimal baffle bending angle instruction and the vacuum negative pressure gradient parameter, adjusting the physical partition curved surface shape, guiding urine into a filtering area through negative pressure suction, and sucking fecal flushing water to a rotary screen through vacuum negative pressure; Purifying urine by the composite adsorption material in the filtering area, and simultaneously separating beta-ray liquid in fecal flushing water by using a rotary screen to flow into a decay tank; monitoring the radiation dose of a water outlet of the filtering area and the beta-ray activity concentration in the decay pool in real time, and generating a water body standard-reaching verification signal when the radiation dose is continuously lower than a preset safety threshold and the beta-ray activity concentration decays to an emission standard; And inputting the water body standard-reaching verification signal into a federal learning optimizer, dynamically updating the digital twin model, and completing closed-loop optimization.
2. The method for designing an in situ separation process of urine and fecal flush water according to claim 1, wherein the metabolite virtual ingredient spectrum comprises a radionuclide virtual concentration parameter and a solid loading rate parameter.
3. The method for designing in-situ separation treatment of urine and fecal flushing water according to claim 1, wherein the output metabolite virtual ingredient spectrum comprises the following steps, Collecting physical parameters of urine and fecal flushing water, and performing time sequence alignment, noise filtering and normalization processing to form a standardized parameter vector; Inputting the standardized parameter vector into a digital twin model, and calculating the radionuclide virtual concentration parameter and the solid load factor parameter through a multi-layer perceptron neural network; and integrating the radionuclide virtual concentration parameter and the solid load factor parameter to generate a metabolite virtual component spectrum.
4. The method for designing in-situ separation treatment of urine and fecal flushing water according to claim 1, wherein the method outputs the instruction of the bending angle of the optimal baffle plate, specifically comprises the following steps, Constructing a three-dimensional cellular automaton model according to the radionuclide virtual concentration parameter and the preset physical size parameter of the separation cavity, and simulating a urine particle diffusion path to form a urine particle diffusion path set; According to the urine particle diffusion path set, the separation efficiency and the radioactive residual index under different baffle bending angles are evaluated through multi-objective optimization analysis, and the optimal baffle bending angle is determined through multi-agent collaborative decision; and converting the optimal baffle bending angle into an optimal baffle bending angle instruction.
5. The method for designing in-situ separation treatment of urine and fecal flushing water according to claim 1, wherein the method comprises calculating vacuum negative pressure gradient parameters by a fluid dynamic model, Constructing a viscoelastic multiphase flow dynamics model according to the solid load rate parameter and a preset physical size parameter of the separation cavity; Calculating pressure distribution field data in the separation cavity by self-adaptive grid finite element solution based on the viscoelastic multiphase flow dynamics model; and calculating vacuum negative pressure gradient parameters through main streamline integral averaging and dynamic load compensation according to pressure distribution field data in the separation cavity.
6. The method for designing in-situ separation treatment of urine and fecal-wash water according to claim 1, wherein the vacuum negative pressure sucks fecal-wash water to a rotating screen, comprising the steps of, Converting the optimal baffle bending angle instruction into a motor pulse control signal, and simultaneously converting the vacuum negative pressure gradient parameter into a vacuum pump set rotating speed control signal; driving a shape memory alloy actuator to adjust the physical partition curved surface to an optimal bending form according to the motor pulse control signal; According to the rotation speed control signal of the vacuum pump set, the operation speed of the three-stage vacuum pump set is synchronously regulated to form a negative pressure gradient; Under the optimal bending form and negative pressure gradient, urine is led into the filtering area by utilizing the fluid coanda effect, and meanwhile, fecal flushing water is pumped to the rotary screen by means of vacuum negative pressure.
7. The method for designing in-situ separation treatment of urine and fecal-wash water according to claim 1, wherein the beta-ray liquid in the fecal-wash water separated by the rotating screen simultaneously flows into the decay tank by the following steps, Purifying urine led into the filtering area by a three-stage gradient adsorption bed; and (3) performing intelligent separation treatment on the fecal flushing water pumped to the rotary screen, and enabling the separated beta-ray liquid to flow into a decay tank.
8. The method for designing in-situ separation treatment of urine and fecal flushing water according to claim 1, wherein the real-time monitoring of radiation dose at the water outlet of the filtering area and beta-ray activity concentration in the decay tank comprises the following steps, Monitoring the radiation dose of urine after filtration in real time through a NaI scintillator detector arranged at a water outlet of the filtering area; the beta-ray activity concentration in the decay cell is monitored in real time by a liquid-immersed plastic scintillator monitor deployed in the decay cell.
9. The method for designing the in-situ separation treatment of urine and fecal flushing water according to claim 1, wherein the method for generating the water body standard-reaching verification signal comprises the following specific steps, Comparing the radiation dose of the water outlet of the filtering area with a preset safety threshold value, and comparing the beta-ray activity concentration in the decay tank with a preset emission standard; Generating a water body standard verification signal when the radiation dosage of a water outlet of the filtering area is continuously lower than a preset safety threshold value and the beta-ray activity concentration in the decay pool decays to a preset emission standard; and triggering reflux reprocessing when any value of the radiation dose and the beta-ray activity concentration exceeds the standard.
10. The method for designing in-situ separation treatment of urine and fecal flushing water according to claim 1, wherein the dynamic updating of the digital twin model completes closed-loop optimization by the following steps, Encrypting the water body standard reaching verification signal and uploading the encrypted water body standard reaching verification signal to a federal learning optimizer; The federal learning optimizer updates global parameters of the digital twin model through a safe aggregation algorithm and feeds back the global parameters to complete closed-loop optimization.

Description

Design method for in-situ separation treatment of urine and fecal flushing water Technical Field The invention relates to the technical field of computer aided design, in particular to a design method for in-situ separation treatment of urine and fecal flushing water. Background In the field of computer aided design, a separation optimization method based on multi-physical field coupling simulation has become a core means for industrial equipment research and development. In the prior art, a fluid dynamic model is constructed through finite element analysis to predict a solid phase migration track, a discrete element method is adopted to simulate particle collision behavior, and a machine learning algorithm is utilized to train separation parameters under a steady-state working condition. In recent years, the integration of a real-time sensor network and a digital twin technology further improves modeling precision, and provides a high-fidelity virtual mapping foundation for a complex separation process. The transient response of multi-physical field intensity coupling in the radioactive medical waste treatment has the defect that the traditional simulation model is difficult to synchronously analyze the dynamic association of the decay of the nuclide with short half-life period, the mutation of the solid load rate and the shear stress of the fluid, so that the simulation error of a separation path is larger, and the radiation diffusion prediction misalignment is caused. Disclosure of Invention The present invention has been made in view of the above-described problems occurring in the prior art. Therefore, the invention provides a design method for in-situ separation treatment of urine and fecal flushing water, which solves the problem of insufficient simulation precision caused by transient coupling mismatch of multiple physical fields in the design of radioactive excrement separation equipment. In order to solve the technical problems, the invention provides the following technical scheme: The invention provides a design method for in-situ separation treatment of urine and fecal flushing water, which comprises the steps of collecting physical parameters of the urine and the fecal flushing water, inputting the physical parameters into a digital twin model, outputting a metabolite virtual component spectrum, simulating a urine particle diffusion path through a cellular automaton model according to the metabolite virtual component spectrum, outputting an optimal baffle bending angle instruction, calculating a vacuum negative pressure gradient parameter through a fluid dynamics model, adjusting a physical partition curved surface form according to the optimal baffle bending angle instruction and the vacuum negative pressure gradient parameter, guiding the urine into a filtering area through negative pressure suction, sucking the fecal flushing water to a rotary screen through the vacuum negative pressure, purifying the urine through a composite adsorption material in the filtering area, separating beta ray liquid in the fecal flushing water by the rotary screen, flowing into a decay tank, monitoring radiation dose of a water outlet of the filtering area and beta ray activity concentration in the decay tank in real time, generating a water body standard verification signal when the radiation dose is continuously lower than a preset safety threshold and the beta ray activity concentration is attenuated to a discharge standard, inputting the water body standard verification signal into a federal learning optimizer, dynamically updating the digital twin model, and completing closed loop optimization. As a preferable scheme of the design method for in-situ separation treatment of urine and fecal flushing water, the metabolite virtual ingredient spectrum comprises radionuclide virtual concentration parameters and solid load factor parameters. As a preferable scheme of the design method for in-situ separation treatment of urine and fecal flushing water, the invention comprises the following specific steps of outputting a virtual component spectrum of metabolites, Collecting physical parameters of urine and fecal flushing water, and performing time sequence alignment, noise filtering and normalization processing to form a standardized parameter vector; Inputting the standardized parameter vector into a digital twin model, and calculating the radionuclide virtual concentration parameter and the solid load factor parameter through a multi-layer perceptron neural network; and integrating the radionuclide virtual concentration parameter and the solid load factor parameter to generate a metabolite virtual component spectrum. As a preferable scheme of the design method for in-situ separation treatment of urine and fecal flushing water, the invention outputs the instruction of the bending angle of the optimal baffle, and comprises the following specific steps, Constructing a three-dimensional cellular automaton model accor