CAD-based digital twin system of environmental protection equipment and its construction method

Abstract

The present invention relates to the technical field of electronic digital data processing, and discloses a CAD-based digital twin system of environmental protection equipment and a construction method thereof. The system comprises: a model construction module, a model mapping module, a thermal analysis module, a structural mechanics analysis module, a fluid mechanics analysis module and a data analysis and display module. The digital twin system of the environmental protection equipment is constructed by acquiring the CAD model of the environmental protection equipment, and thermal analysis, structural mechanics analysis and fluid mechanics analysis are performed on the environmental protection equipment. Based on the analysis results, the status of the environmental protection equipment is displayed in the digital twin model, and an abnormal status is warned. The present invention can improve the diversity of data processed by the digital twin model system of the environmental protection equipment and improve the accuracy of the analysis results.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical digital data processing, and in particular to a CAD-based digital twin system of environmental protection equipment and a construction method thereof. Background Art

[0002] Digital twin technology is a technology that achieves real-time monitoring and predictive analysis of physical equipment by creating virtual copies of physical equipment. Building a digital twin system for environmental protection equipment can improve the accuracy of users' analysis of environmental protection equipment operating data.

[0003] However, most of the existing digital twin systems are designed for unilateral data monitoring and analysis, which makes it difficult to conduct multi-faceted data monitoring and analysis, resulting in single mapping data; on the other hand, data mapping is performed by directly mapping the data collected by the sensor, which causes the mapping data analysis results to be affected by the sensor density, making the mapping accuracy of the digital twin system low. Therefore, how to process multi-faceted data and improve the mapping accuracy of the digital twin system has become an urgent problem to be solved. Summary of the invention

[0004] The present invention provides a CAD-based digital twin system for environmental protection equipment and a construction method thereof, the main purpose of which is to solve the problems of single data processing and low accuracy of data processing results in the digital twin system.

[0005] To achieve the above-mentioned purpose, the present invention provides a CAD-based digital twin system for environmental protection equipment, comprising: a model building module, a model mapping module, a thermal analysis module, a structural mechanics analysis module, a fluid mechanics analysis module and a data analysis and display module, wherein:

[0006] The model building module is used to obtain the CAD model data of the environmental protection equipment, build the shell geometry model and internal structure model of the environmental protection equipment based on the CAD model data, and embed the internal structure model into the shell geometry model to obtain the digital twin model of the environmental protection equipment.

[0007] The model mapping module is used to map the digital twin model with the environmental protection equipment.

[0008] The thermal analysis module is used to perform thermal analysis on the environmental protection equipment based on pre-acquired operating status data and a three-dimensional thermal analysis algorithm to obtain temperature distribution information of the environmental protection equipment.

[0009] The structural mechanics analysis module is used to perform structural mechanics analysis on environmental protection equipment using a three-dimensional pressure generation algorithm to obtain three-dimensional pressure distribution information of the environmental protection equipment.

[0010] The fluid mechanics analysis module is used to perform fluid mechanics analysis on the environmental protection equipment based on the fluid flow rate, so as to obtain the fluid flow rate information and fluid pressure distribution information of the liquid in the environmental protection equipment.

[0011] The data analysis and display module is used to display the real-time status of the environmental protection equipment, compare the analysis results with the warning threshold, and provide warning prompts and fault prompts in the digital twin model based on the comparison results.

[0012] Optionally, the method for acquiring CAD model data of the environmental protection equipment and constructing a shell geometry model and an internal structure model of the environmental protection equipment based on the CAD model data includes:

[0013] Collecting the CAD model data of the shell of the environmental protection equipment, and generating the shell geometric model of the environmental protection equipment based on the CAD model data of the shell;

[0014] An internal component model of the environmental protection equipment is generated through parameter modeling, and the internal component models are combined to obtain an internal structure model of the environmental protection equipment.

[0015] Optionally, the internal structure model is built into the outer shell geometric model to obtain a digital twin model of the environmental protection equipment, including:

[0016] Merging the static parts in the internal structure model to obtain an internal simplified structure model;

[0017] The internal simplified structural model is combined with the outer shell geometric model to generate a digital twin model;

[0018] When the digital twin system is started, the shell geometry model in the digital twin model is displayed in solid color on the left and in wireframe on the right.

[0019] Optionally, the method for mapping the digital twin model with environmental protection equipment includes:

[0020] Performing geometric mapping between the digital twin model and the environmental protection equipment according to the physical size of the environmental protection equipment;

[0021] Mapping the material properties of the environmental protection equipment to the digital twin model;

[0022] Acquire the operating status data of the environmental protection equipment, and map the operating status data to the digital twin model.

[0023] Optionally, the three-dimensional thermal analysis algorithm is as follows:

[0024]

[0025] In the formula, express Axis data change rate, express Axis data change rate, express Axis data change rate, represents the thermal conductivity, represents the temperature value of the coordinate point (i, j, k) in the data twin model, Indicates the heat source intensity of the environmental protection equipment, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change.

[0026] Optionally, the three-dimensional pressure generation algorithm is as follows:

[0027]

[0028] In the formula, To protect the environmental protection equipment from stress caused by pressure, The pressure on environmental protection equipment, is the stress-bearing area of ​​the environmental protection equipment. for The normal strain component in the axial direction, for The normal strain component in the axial direction is, for The normal strain component in the axial direction is, and is the Lamé constant, is the elastic modulus, is Poisson's ratio, , and Indicates the coordinate point.

[0029] Optionally, the method of fluid mechanics analysis is as follows:

[0030] Substitute the fluid flow rate of the liquid in the environmental protection equipment into the following equation:

[0031]

[0032] In the formula, represents the fluid flow velocity value of the coordinate point (i, j, k) in the digital twin model, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change.

[0033] Optionally, the method for displaying the real-time status of the environmental protection equipment includes:

[0034] When the environmental protection equipment operates normally, the operating status data is displayed on the left side of the digital twin model, and the temperature distribution information, the three-dimensional pressure distribution information and the fluid flow rate information are respectively displayed on the right side of the digital twin model.

[0035] Optionally, comparing the analysis result with the warning threshold, and providing a warning prompt and a fault prompt in the digital twin model based on the comparison result, includes:

[0036] When the temperature distribution information exceeds a preset warning temperature threshold, the temperature distribution information is displayed in red at the corresponding position in the digital twin model;

[0037] When the temperature distribution information exceeds 50% of the preset warning temperature threshold, the temperature distribution information is displayed in orange at the corresponding position in the digital twin model;

[0038] When the temperature distribution information is lower than 30% of the preset warning temperature threshold, the corresponding position of the temperature distribution information in the digital twin model is displayed in gray;

[0039] When the three-dimensional pressure distribution information exceeds a preset warning pressure threshold, a pressure warning prompt message is sent to the data display and analysis module;

[0040] When the fluid flow rate information and the fluid pressure distribution information exceed a preset warning fluid threshold, a fluid warning prompt message is sent to the data display and analysis module.

[0041] In order to solve the above problems, the present invention also provides a CAD-based digital twin system of environmental protection equipment and a construction method thereof, the method comprising:

[0042] S1, obtaining CAD model data of environmental protection equipment, constructing a shell geometry model and an internal structure model of the environmental protection equipment based on the CAD model data, and embedding the internal structure model into the shell geometry model to obtain a digital twin model of the environmental protection equipment.

[0043] S2, mapping the digital twin model with environmental protection equipment.

[0044] S3, performing thermal analysis on the environmental protection equipment based on the pre-acquired operating status data and a three-dimensional thermal analysis algorithm to obtain temperature distribution information of the environmental protection equipment.

[0045] S4, performing structural mechanics analysis on the environmental protection equipment using a three-dimensional pressure generation algorithm to obtain three-dimensional pressure distribution information of the environmental protection equipment.

[0046] S5, performing fluid mechanics analysis on the environmental protection equipment based on the fluid flow rate to obtain fluid flow rate information and fluid pressure distribution information of the liquid in the environmental protection equipment.

[0047] S6, displaying the real-time status of the environmental protection equipment, comparing the analysis result with the warning threshold, and providing warning prompts and fault prompts in the digital twin model based on the comparison result.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] 1. The present invention adopts parameter modeling to obtain the internal parts model sub-model of the environmental protection equipment, and combines the sub-models to obtain the internal structure model, so as to obtain a high-precision internal structure model and improve the mapping accuracy;

[0050] 2. Combine the internal structure model with the outer shell geometry model to generate a digital twin model, so as to obtain a digital twin model with clear internal and external structures and improve the diversity of displayed data;

[0051] 3. Conduct thermal analysis, structural mechanics analysis, and fluid mechanics analysis on the operating status data of environmental protection equipment, and display and issue early warning prompts on the digital twin model based on the analysis results, solving the problem of single mapping data in traditional digital twin systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A functional module diagram of a CAD-based digital twin system for environmental protection equipment provided in one embodiment of the present invention;

[0053] Figure 2 A schematic diagram of a process for constructing a digital twin system of environmental protection equipment based on CAD provided in one embodiment of the present invention;

[0054] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments belong to a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0057] As used herein, the words “if” or “if” may be interpreted as “at the time of” or “when” or “in response to determining” or “in response to detecting”, depending on the context. Similarly, the phrases “if it is determined” or “if (stated condition or event) is detected” may be interpreted as “when it is determined” or “in response to determining” or “when detecting (stated condition or event)” or “in response to detecting (stated condition or event)”, depending on the context.

[0058] In addition, the step sequence in the following method embodiments is only an example and not a strict limitation.

[0059] In fact, the server-side device deployed by the CAD-based digital twin system of environmental protection equipment may be composed of one or more devices. The above-mentioned CAD-based digital twin system of environmental protection equipment can be implemented as: business instances, virtual machines, hardware devices. Simply put, the CAD-based digital twin system of environmental protection equipment can be understood as a software deployed on a cloud node, which is used to provide a CAD-based digital twin system of environmental protection equipment to each user terminal. Alternatively, the CAD-based digital twin system of environmental protection equipment can also be implemented as a virtual machine deployed on one or more devices in a cloud node. The virtual machine is installed with application software for managing each user terminal. Alternatively, the CAD-based digital twin system of environmental protection equipment can also be implemented as a server composed of many hardware devices of the same or different types, and one or more hardware devices are set to provide a CAD-based digital twin system of environmental protection equipment to each user terminal.

[0060] In terms of implementation, the CAD-based digital twin system of environmental protection equipment and the user end are adapted to each other. That is, the CAD-based digital twin system of environmental protection equipment is an application installed on the cloud service platform, and the user end is a client that establishes a communication connection with the application; or the CAD-based digital twin system of environmental protection equipment is implemented as a website, and the user end is implemented as a web page; or the CAD-based digital twin system of environmental protection equipment is implemented as a cloud service platform, and the user end is implemented as a small program in the instant messaging application.

[0061] like Figure 1 As shown, it is a system architecture diagram of a CAD-based digital twin system for environmental protection equipment provided in one embodiment of the present invention.

[0062] The CAD-based digital twin system of environmental protection equipment described in the present invention can be set in a cloud server. In terms of implementation, it can be used as one or more service devices, or it can be installed as an application on the cloud (such as a server of a mobile service operator, a server cluster, etc.), or it can be developed as a website. According to the functions implemented, the CAD-based digital twin system of environmental protection equipment can include a model construction module 101, a model mapping module 102, a thermal analysis module 103, a structural mechanics analysis module 104, a fluid mechanics analysis module 105, and a data analysis and display module 106. The module described in the present invention can also be referred to as a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0063] In an embodiment of the present invention, in the CAD-based digital twin system for environmental protection equipment, each of the above modules can be implemented independently and called with other modules. The call here can be understood as a module that can connect multiple modules of another type and provide corresponding services to the multiple modules connected to it. For example, the sharing evaluation module can call the same information acquisition module to obtain the information collected by the information acquisition module. Based on the above characteristics, in the CAD-based digital twin system for environmental protection equipment provided by the embodiment of the present invention, the scope of application of the CAD-based digital twin system architecture of environmental protection equipment can be adjusted by adding modules and directly calling them without modifying the program code, so as to achieve cluster-based horizontal expansion, so as to achieve the purpose of quickly and flexibly expanding the CAD-based digital twin system for environmental protection equipment. In practical applications, the above modules can be set in the same device or different devices, or they can be set in virtual devices, such as service instances in cloud servers.

[0064] The following is a description of the various components and specific workflows of the CAD-based digital twin system for environmental protection equipment in conjunction with specific embodiments:

[0065] A CAD-based digital twin system for environmental protection equipment, characterized in that the system comprises:

[0066] Model building module, model mapping module, thermal analysis module, structural mechanics analysis module, fluid mechanics analysis module and data analysis and display module, including:

[0067] The model building module is used to obtain the CAD model data of the environmental protection equipment, build the shell geometry model and internal structure model of the environmental protection equipment based on the CAD model data, and embed the internal structure model into the shell geometry model to obtain the digital twin model of the environmental protection equipment.

[0068] In a specific example, the method for acquiring CAD model data of environmental protection equipment and constructing a shell geometry model and an internal structure model of the environmental protection equipment based on the CAD model data includes:

[0069] Collecting the CAD model data of the shell of the environmental protection equipment, and generating the shell geometric model of the environmental protection equipment based on the CAD model data of the shell;

[0070] An internal component model of the environmental protection equipment is generated through parameter modeling, and the internal component models are combined to obtain an internal structure model of the environmental protection equipment.

[0071] It should be noted that the CAD model data of the environmental protection equipment includes: the modeling model of the shell parts of the environmental protection equipment and the modeling models of all parts constituting the internal structure of the environmental protection equipment.

[0072] It should be noted that the internal part model of the environmental protection equipment is generated by parameter modeling, which is to input geometric parameters of the internal parts of the environmental protection equipment or import geometric slice diagrams of the internal parts of the environmental protection equipment through parameter modeling software to generate the internal part model.

[0073] Furthermore, the internal part model is a whole composed of all parts of the internal structure. This method can improve the accuracy of the internal part model, so that subsequent digital twin model mapping can provide higher-precision internal structure data.

[0074] In a specific example, the internal structure model is built into the outer shell geometric model to obtain a digital twin model of the environmental protection equipment, including:

[0075] Merging the static parts in the internal structure model to obtain an internal simplified structure model;

[0076] The internal simplified structural model is combined with the outer shell geometric model to generate a digital twin model;

[0077] When the digital twin system is started, the shell geometry model in the digital twin model is displayed in solid color on the left and in wireframe on the right.

[0078] It should be noted that the static parts refer to parts that remain stationary relative to the environmental protection equipment and do not move or rotate during the operation of the environmental protection equipment.

[0079] It should be noted that the internal simplified structure model is grouped according to the parts that move during the actual operation of the environmental protection equipment, all static parts between two moving parts are merged and saved as one model. The model with simplified part quantity and structure generated in this way is the internal simplified structure model.

[0080] Furthermore, generating the internal simplified structure model can reduce the number of models while ensuring the accuracy of the mapping model, thereby reducing the delay during data mapping.

[0081] It should be noted that the outer shell geometry model in the digital twin model is displayed in solid color on the left and in wireframe on the right. This display method can more clearly display the internal and external structures of the environmental protection equipment in the digital twin system, so that the data mapping can be displayed more accurately.

[0082] The model mapping module is used to map the digital twin model with the environmental protection equipment.

[0083] In a specific example, the method for mapping the digital twin model with environmental protection equipment includes:

[0084] Performing geometric mapping between the digital twin model and the environmental protection equipment according to the physical size of the environmental protection equipment;

[0085] Mapping the material properties of the environmental protection equipment to the digital twin model;

[0086] Acquire the operating status data of the environmental protection equipment, and map the operating status data to the digital twin model.

[0087] It should be noted that the operating status data includes: the internal temperature of the environmental protection equipment, the pressure borne by the environmental protection equipment, and the fluid flow rate of the liquid inside the environmental protection equipment.

[0088] It should be noted that material properties include: the physical material of the environmental protection equipment shell and internal structural parts, thermal conductivity, and material toughness.

[0089] The thermal analysis module is used to perform thermal analysis on the environmental protection equipment based on pre-acquired operating status data and a three-dimensional thermal analysis algorithm to obtain temperature distribution information of the environmental protection equipment.

[0090] In a specific example, the three-dimensional thermal analysis algorithm is as follows:

[0091]

[0092] In the formula, express Axis data change rate, express Axis data change rate, express Axis data change rate, represents the thermal conductivity, represents the temperature value of the coordinate point (i, j, k) in the data twin model, Indicates the heat source intensity of the environmental protection equipment, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change.

[0093] It should be noted that the three-dimensional thermal analysis algorithm obtains accurate temperature information at various locations of the environmental protection equipment by analyzing the heat source temperature collected by the sensor in combination with the thermal conductivity of the environmental protection equipment material. The temperature change rate between the two collected coordinates is obtained through the temperature difference between two adjacent positions in the spatial coordinate system and the spatial distance of the collected coordinates. Combined with the thermal conductivity of the materials used in the environmental protection equipment, the temperature details of various locations of the environmental protection equipment in the spatial coordinate system are finally obtained. The temperature data obtained by this method is more accurate than the method of directly collecting data through sensors for mapping.

[0094] Furthermore, in the three-dimensional thermal analysis algorithm, the temperature at any position in the environmental protection equipment increases as the thermal conductivity increases.

[0095] The structural mechanics analysis module is used to perform structural mechanics analysis on environmental protection equipment using a three-dimensional pressure generation algorithm to obtain three-dimensional pressure distribution information of the environmental protection equipment.

[0096] In a specific example, the three-dimensional pressure generation algorithm is as follows:

[0097]

[0098] In the formula, To protect the environmental protection equipment from the stress caused by pressure, The pressure on environmental protection equipment, is the stress-bearing area of ​​the environmental protection equipment. for The normal strain component in the axial direction, for The normal strain component in the axial direction is, for The normal strain component in the axial direction is, and is the Lamé constant, is the elastic modulus, is Poisson's ratio, , and Indicates the coordinate point.

[0099] It should be noted that the three-dimensional pressure generation algorithm analyzes the stress and elastic modulus of the environmental protection equipment to obtain the stress at various locations of the environmental protection equipment, converts the stress into pressure and maps it to the digital twin system for display.

[0100] Furthermore, in the three-dimensional pressure generation algorithm, pressure increases with stress, wherein stress increases with elastic modulus and Poisson's ratio.

[0101] The fluid mechanics analysis module is used to perform fluid mechanics analysis on the environmental protection equipment based on the fluid flow rate, so as to obtain the fluid flow rate information and fluid pressure distribution information of the liquid in the environmental protection equipment.

[0102] In a specific example, the method of fluid mechanics analysis is as follows:

[0103] Substitute the fluid flow rate of the liquid in the environmental protection equipment into the following equation:

[0104]

[0105] In the formula, represents the fluid flow velocity value of the coordinate point (i, j, k) in the digital twin model, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change.

[0106] It should be noted that the fluid flow velocity equation of the liquid in the environmental protection equipment is an algorithm that analyzes the fluid flow velocity and the degree of change of the fluid flow velocity at various locations in the environmental protection equipment by collecting the fluid flow velocity at adjacent points in three-dimensional space. The fluid flow velocity of the liquid at various locations inside the environmental protection equipment can be accurately calculated by collecting the flow velocity conditions at the collection points, and the flow velocity at various locations in the environmental protection equipment can be mapped to the digital twin system for display.

[0107] Furthermore, in the fluid flow rate equation of the liquid in the environmental protection equipment, the degree of change of the fluid flow rate is determined by the fluid flow rate at the collection point and increases with the increase of the flow rate difference.

[0108] The data analysis and display module is used to display the real-time status of the environmental protection equipment, compare the analysis results with the warning threshold, and provide warning prompts and fault prompts in the digital twin model based on the comparison results.

[0109] In a specific example, the method for displaying the real-time status of the environmental protection equipment includes:

[0110] When the environmental protection equipment operates normally, the operating status data is displayed on the left side of the digital twin model, and the temperature distribution information, the three-dimensional pressure distribution information and the fluid flow rate information are respectively displayed on the right side of the digital twin model.

[0111] In a specific example, comparing the analysis result with the warning threshold, and providing a warning prompt and a fault prompt in the digital twin model based on the comparison result, includes:

[0112] When the temperature distribution information exceeds a preset warning temperature threshold, the temperature distribution information is displayed in red at the corresponding position in the digital twin model;

[0113] When the temperature distribution information exceeds 50% of the preset warning temperature threshold, the temperature distribution information is displayed in orange at the corresponding position in the digital twin model;

[0114] When the temperature distribution information is lower than 30% of the preset warning temperature threshold, the corresponding position of the temperature distribution information in the digital twin model is displayed in gray;

[0115] Furthermore, in the digital twin model, when the temperature at the right side of the outer shell of the environmental protection equipment exceeds the preset warning temperature threshold, the outer shell portion exceeding the preset warning temperature threshold will be displayed in solid color, and the surrounding portion that does not exceed the preset warning temperature threshold will be displayed in a wireframe.

[0116] When the three-dimensional pressure distribution information exceeds a preset warning pressure threshold, a pressure warning prompt message is sent to the data display and analysis module;

[0117] When the fluid flow rate information and the fluid pressure distribution information exceed a preset warning fluid threshold, a fluid warning prompt message is sent to the data display and analysis module.

[0118] It should be noted that sending pressure warning prompt information to the data display and analysis module means enlarging and displaying the corresponding warning position in the digital twin model, and flashing the warning position in blue.

[0119] It should be noted that the data display and analysis module sends fluid warning prompt information, which means that the corresponding warning position in the digital twin model is enlarged and displayed, and the warning position is displayed in red line drawing and yellow flashing prompt, and other positions of the digital twin model are displayed in line drawing mode.

[0120] Furthermore, using red, blue and yellow flashing for prompting respectively can allow the user to intuitively distinguish the warning status through the change of prompt color.

[0121] Reference Figure 2 FIG. 1 is a flow chart of a method for constructing a digital twin system of environmental protection equipment based on CAD according to an embodiment of the present invention. In this embodiment, the method for constructing a digital twin system of environmental protection equipment based on CAD includes:

[0122] S1, obtaining CAD model data of environmental protection equipment, constructing a shell geometry model and an internal structure model of the environmental protection equipment based on the CAD model data, and embedding the internal structure model into the shell geometry model to obtain a digital twin model of the environmental protection equipment.

[0123] S2, mapping the digital twin model with environmental protection equipment.

[0124] S3, performing thermal analysis on the environmental protection equipment based on the pre-acquired operating status data and a three-dimensional thermal analysis algorithm to obtain temperature distribution information of the environmental protection equipment.

[0125] S4, performing structural mechanics analysis on the environmental protection equipment using a three-dimensional pressure generation algorithm to obtain three-dimensional pressure distribution information of the environmental protection equipment.

[0126] S5, performing fluid mechanics analysis on the environmental protection equipment based on the fluid flow rate to obtain fluid flow rate information and fluid pressure distribution information of the liquid in the environmental protection equipment.

[0127] S6, displaying the real-time status of the environmental protection equipment, comparing the analysis result with the warning threshold, and providing warning prompts and fault prompts in the digital twin model based on the comparison result.

[0128] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0129] The embodiments of the present application can acquire and process relevant data based on artificial intelligence technology. Artificial intelligence is the theory, method, technology and application system that uses digital computers or machines controlled by digital computers to simulate, extend and expand human intelligence, perceive the environment, acquire knowledge and use knowledge to obtain the best results.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A CAD-based digital twin system for environmental protection equipment, characterized in that: The system comprises: Model building module, model mapping module, thermal analysis module, structural mechanics analysis module, fluid mechanics analysis module and data analysis and display module, including: The model building module is used to obtain CAD model data of the environmental protection equipment, build a shell geometry model and an internal structure model of the environmental protection equipment based on the CAD model data, and embed the internal structure model into the shell geometry model to obtain a digital twin model of the environmental protection equipment; The model mapping module is used to map the digital twin model with the environmental protection equipment; The thermal analysis module is used to perform thermal analysis on the environmental protection equipment based on pre-acquired operating status data and a three-dimensional thermal analysis algorithm to obtain temperature distribution information of the environmental protection equipment, wherein the three-dimensional thermal analysis algorithm is as follows: In the formula, express Axis data change rate, express Axis data change rate, express Axis data change rate, represents the thermal conductivity, represents the temperature value of the coordinate point (i, j, k) in the data twin model, Indicates the heat source intensity of the environmental protection equipment, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change; The structural mechanics analysis module is used to perform structural mechanics analysis on the environmental protection equipment using a three-dimensional pressure generation algorithm to obtain three-dimensional pressure distribution information of the environmental protection equipment, wherein the three-dimensional pressure generation algorithm is as follows: In the formula, To protect the environmental protection equipment from stress caused by pressure, The pressure on environmental protection equipment, is the stress-bearing area of ​​the environmental protection equipment. for The normal strain component in the axial direction, for The normal strain component in the axial direction, for The normal strain component in the axial direction, and is the Lamé constant, is the elastic modulus, is Poisson's ratio, , and Indicates coordinate points; The fluid mechanics analysis module is used to perform fluid mechanics analysis on the environmental protection equipment based on the fluid flow rate to obtain fluid flow rate information and fluid pressure distribution information of the liquid in the environmental protection equipment; The data analysis and display module is used to display the real-time status of the environmental protection equipment, compare the analysis results with the warning threshold, and provide warning prompts and fault prompts in the digital twin model based on the comparison results.

2. The CAD-based digital twin system for environmental protection equipment according to claim 1, characterized in that: The method for acquiring CAD model data of environmental protection equipment and constructing a shell geometric model and an internal structure model of the environmental protection equipment based on the CAD model data includes: Collecting the CAD model data of the shell of the environmental protection equipment, and generating the shell geometric model of the environmental protection equipment based on the CAD model data of the shell; An internal component model of the environmental protection equipment is generated through parameter modeling, and the internal component models are combined to obtain an internal structure model of the environmental protection equipment.

3. The CAD-based digital twin system for environmental protection equipment according to claim 1, characterized in that: The internal structure model is built into the outer shell geometric model to obtain a digital twin model of the environmental protection equipment, including: Merging the static parts in the internal structure model to obtain an internal simplified structure model; The simplified internal structure model is combined with the outer shell geometry model to generate a digital twin model; When the digital twin system is started, the shell geometry model in the digital twin model is displayed in solid color on the left and in wireframe on the right.

4. The CAD-based digital twin system for environmental protection equipment according to claim 1, characterized in that: The method for mapping the digital twin model with the environmental protection equipment includes: Performing geometric mapping between the digital twin model and the environmental protection equipment according to the physical size of the environmental protection equipment; Mapping the material properties of the environmental protection equipment to the digital twin model; Acquire the operating status data of the environmental protection equipment, and map the operating status data to the digital twin model.

5. The CAD-based digital twin system for environmental protection equipment according to claim 1, characterized in that: The method of the fluid mechanics analysis is as follows: Substitute the fluid flow rate of the liquid in the environmental protection equipment into the following equation: In the formula, represents the fluid flow velocity value of the coordinate point (i, j, k) in the digital twin model, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change.

6. The CAD-based digital twin system for environmental protection equipment according to claim 1, characterized in that: The method for displaying the real-time status of the environmental protection equipment includes: When the environmental protection equipment operates normally, the operating status data is displayed on the left side of the digital twin model, and the temperature distribution information, the three-dimensional pressure distribution information and the fluid flow rate information are respectively displayed on the right side of the digital twin model.

7. The CAD-based digital twin system for environmental protection equipment according to claim 1, characterized in that: The comparison analysis result and the warning threshold value are compared, and warning prompts and fault prompts are performed in the digital twin model based on the comparison result, including: When the temperature distribution information exceeds a preset warning temperature threshold, the temperature distribution information is displayed in red at the corresponding position in the digital twin model; When the temperature distribution information exceeds 50% of the preset warning temperature threshold, the temperature distribution information is displayed in orange at the corresponding position in the digital twin model; When the temperature distribution information is lower than 30% of the preset warning temperature threshold, the corresponding position of the temperature distribution information in the digital twin model is displayed in gray; When the three-dimensional pressure distribution information exceeds a preset warning pressure threshold, a pressure warning prompt message is sent to the data display and analysis module; When the fluid flow rate information and the fluid pressure distribution information exceed a preset warning fluid threshold, a fluid warning prompt message is sent to the data display and analysis module.

8. A method for constructing a digital twin system of environmental protection equipment based on CAD, characterized in that: The method comprises: S1, obtaining CAD model data of environmental protection equipment, constructing a shell geometry model and an internal structure model of the environmental protection equipment based on the CAD model data, and embedding the internal structure model into the shell geometry model to obtain a digital twin model of the environmental protection equipment; S2, mapping the digital twin model with environmental protection equipment; S3, performing thermal analysis on the environmental protection equipment based on the pre-acquired operating status data and a three-dimensional thermal analysis algorithm to obtain temperature distribution information of the environmental protection equipment, wherein the three-dimensional thermal analysis algorithm is as follows: In the formula, express Axis data change rate, express Axis data change rate, express Axis data change rate, represents the thermal conductivity, represents the temperature value of the coordinate point (i, j, k) in the data twin model, Indicates the heat source intensity of the environmental protection equipment, express Axis coordinate point, express Axis coordinate point, express Axis coordinate point, , and Two adjacent coordinate points correspond to Change The change and Amount of change; S4, using a three-dimensional pressure generation algorithm to perform structural mechanics analysis on the environmental protection equipment to obtain three-dimensional pressure distribution information of the environmental protection equipment, wherein the three-dimensional pressure generation algorithm is as follows: In the formula, To protect the environmental protection equipment from the stress caused by pressure, The pressure on environmental protection equipment, is the stress-bearing area of ​​the environmental protection equipment. for The normal strain component in the axial direction, for The normal strain component in the axial direction, for The normal strain component in the axial direction, and is the Lamé constant, is the elastic modulus, is Poisson's ratio, , and Indicates the coordinate point; S5, performing fluid mechanics analysis on the environmental protection equipment based on the fluid flow rate to obtain fluid flow rate information and fluid pressure distribution information of the liquid in the environmental protection equipment; S6, displaying the real-time status of the environmental protection equipment, comparing the analysis result with the warning threshold, and providing warning prompts and fault prompts in the digital twin model based on the comparison result.

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