Method for three-dimensional rapid design and arrangement of heating, ventilation and air conditioning equipment based on CATIA

Abstract

The application discloses a three-dimensional quick design and arrangement method of HVAC equipment based on CATIA, which comprises the following steps: selecting a target system to be arranged and a corresponding design scheme template in a resource library on a structure tree skeleton; creating a positioning element under a target system skeleton node; calling the design scheme template to reposition and generate an HVAC equipment and a supporting pipeline model in a three-dimensional skeleton, all the models being spatially positioned based on the positioning element, and an arrangement result being displayed in a three-dimensional skeleton of a selected parent node; loading all equipment information into an equipment selection table and all parameter information into a parameter list; updating equipment and parameter information according to requirements, and completing three-dimensional design and arrangement of the HVAC equipment. The application can accurately and quickly complete equipment design and arrangement of a project by previously establishing standard three-dimensional templates of arrangement of different system equipment in a resource library and then calling the templates and modifying system parameters in different projects, so that the efficiency and accuracy of equipment design and arrangement are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water conservancy and hydropower engineering, and particularly relates to a three-dimensional rapid design and layout method for heating, ventilation, mechanical and electrical equipment based on CATIA. BACKGROUND

[0002] CATIA V6 is a three-dimensional product design and engineering application software integrating CAD / CAE / CAM (Computer-Aided Design, Computer-Aided Engineering, Computer-Aided Manufacturing) developed by Dassault Systemes of France. The software focuses on the whole life cycle management (PLM) of complex product development, and provides a full-process solution from conceptual design, modeling design, three-dimensional model design, analysis and calculation, multidisciplinary simulation and simulation to production and manufacturing. It is widely used in the fields of aerospace, automobile manufacturing, mechanical design, shipbuilding, industrial equipment, water conservancy and hydropower, etc.

[0003] As an important modern energy storage and regulation facility, the three-dimensional design and layout of pumped storage power station is a comprehensive work involving the knowledge and technology of multiple professional fields. Not only the system of each profession itself is relatively complex, but also the workload and difficulty of the cooperation and layout of the structures, equipment and pipelines of each profession in the same project space are huge. The design of heating, ventilation, mechanical and electrical, water supply and drainage systems in the past mainly relies on two-dimensional drawings. This traditional method has gradually exposed the problems faced by the design, and to some extent, it has also limited the depth and accuracy of the design:

[0004] 1. Spatial conflict is difficult to predict

[0005] Two-dimensional drawings cannot intuitively display complex three-dimensional spatial structures such as underground caverns, pressure pipelines and equipment rooms. Spatial intersection conflicts frequently occur between mechanical and electrical pipelines, ventilation pipelines and building structures (such as valve collision with support beams), and construction stage often needs to be adjusted.

[0006] 2. Low coordination efficiency

[0007] Each profession (heating, ventilation, mechanical and electrical, water supply and drainage, structure) draws independently, and the modification information of different professions is not synchronized, which easily leads to data errors and omissions, and manual coordination is time-consuming and laborious, prolonging the design cycle.

[0008] 3. Design depth is limited

[0009] Two-dimensional drawings cannot accurately express three-dimensional spatial parameters such as curved rock structure and inclined pressure steel pipe positioning, and the installation space of equipment is checked by relying on empirical value estimation, which easily leads to insufficient reservation or resource waste.

[0010] 4. Information fragmentation and difficulty in reuse

[0011] Non-parametric design leads to lack of correlation between drawing elements (such as pipe diameter, valve model), and local modification requires global checking; project data is difficult to structure and reuse, and the cost of repeated design is high.

[0012] 5. Inefficient review and construction guidance

[0013] Traditional design intent relies on two-dimensional labeling and textual instructions, and the construction party has a high deviation rate; complex nodes (such as branch pipe connection, corridor intersection) require a large number of additional section views, resulting in an explosive increase in drawing quantity and difficulty in maintenance.

[0014] CATIA V6 provides basic functions for air duct drawing, pipeline and equipment arrangement, and Dassault System also provides a component library for custom development, namely CAA (Component Application Architecture) component library, which provides various mathematical libraries, geometry libraries, and very complete application program interfaces. Based on the above problems, secondary development is carried out through the CAA interface, and a method for quickly completing three-dimensional design and equipment arrangement based on CATIA V6 custom feature templates is proposed. SUMMARY

[0015] The purpose of the present application is to provide a three-dimensional rapid design and arrangement method for HVAC equipment based on CATIA, which solves the problems of low efficiency and accuracy of traditional pumped storage power station design methods.

[0016] The technical scheme adopted by the present application is: a three-dimensional rapid design and arrangement method for HVAC equipment based on CATIA, comprising the following steps:

[0017] Step 1, select the target system to be arranged and the corresponding design scheme template in the resource library on the structure tree skeleton;

[0018] Step 2, create a positioning element under the target system skeleton node;

[0019] Step 3, call the design scheme template, reposition the HVAC equipment model and supporting pipeline model in the three-dimensional skeleton to generate the HVAC equipment model and supporting pipeline model, all models are spatially positioned based on the positioning element, and the arrangement result is displayed in the three-dimensional skeleton of the selected parent node;

[0020] Step 4, after the design scheme template arrangement is completed, all equipment information is loaded into the equipment selection table, and all parameter information is loaded into the parameter list;

[0021] Step 5, update the equipment and parameter information according to the requirements, and complete the three-dimensional design and arrangement of the HVAC equipment.

[0022] The application also has the characteristics that:

[0023] Step 1 is specifically: first, activate the three-dimensional rapid design function command in the CATIA interface, call the CompleteAndOpen method of the CAA interface to open the three-dimensional rapid design template resource library directory, read all templates under the resource library directory and subdirectory through the GetLibrary method of the PLMCLGPublicLibraryNavServices interface, store the template information as a structure array, use the SetLine method of the CATDlgCombo type to fill the template information in the structure array into the system three-dimensional design drop-down box and the system design scheme drop-down box respectively, and complete the initialization of the drop-down box options;

[0024] After selecting the target system and the design scheme template, the Duplicate interface of CATAdpDuplicator is called according to the selected template prd identifier to perform an advanced copy operation on the target template, and the copy result is temporarily stored for subsequent process calling.

[0025] Step 2 is specifically: first, determine the spatial reference basis of the target system three-dimensional layout according to the existing spatial reference features of the plant three-dimensional model, then create a geometry set under the target system skeleton node, which is used to store the positioning elements and link relationships of the system three-dimensional modeling, name the positioning elements in the geometry set according to the plant system association information rules, create a point geometry element and two line geometry elements in turn, then get the positioning elements of the parent node and the positioning elements in the template according to the positioning element names, use the RootAxis method of the CATMathAxis interface to build an axis system for each positioning element, then call the CATMathTransformation interface to convert the axis system coordinates of the template to the axis system coordinates of the skeleton positioning elements, complete the matching of the template spatial position, and finally move the template to the preset spatial position of the target system skeleton through the axis system after coordinate conversion.

[0026] Step 3 specifically includes the following steps:

[0027] Step 3.1, according to the target system and the design scheme selected in step 1, call the corresponding system three-dimensional scheme template from the three-dimensional rapid design template resource library to obtain the HVAC equipment model and the supporting pipeline model;

[0028] Step 3.2, get all named positioning elements in the geometry set in step 2, and match the original positioning elements in the template with the plant system association information;

[0029] Step 3.3, according to the positioning reference after the coordinate transformation of the shafting in step 2, use CATMathTransformation interface to reposition the space position of all HVAC equipment models and supporting pipe models;

[0030] Step 3.4, insert the repositioned HVAC equipment models and supporting pipe models into the parent node specified when selecting the template in step 1 to form the three-dimensional arrangement model of the target system.

[0031] Step 4 is: call the GetValueAsString function to read the name attribute value and specification description attribute value of all equipment in the design scheme template, and fill all equipment name attribute values and specification description attribute values in list form to the equipment selection table display area of the three-dimensional rapid design interface;

[0032] Get the model service object through the GetModelServices method of the CATCkeGlobalFunctions interface, then call the VisibleParms method to read the name, value and unit of all parameters in the scheme template parameter set, and fill them in list form to the parameter list display area of the three-dimensional rapid design interface.

[0033] In step 5, when batch modifying equipment information, export the equipment selection table to the specified file storage path through the SaveAs method of the CExcelRW interface, then batch edit and modify the target equipment information in the exported table file, finally import the table and use the SetValueWithString function to batch attribute assignment for equipment instances, and synchronize the updated equipment information to the equipment selection table display area.

[0034] In step 5, when modifying single equipment information, locate the single target equipment in the equipment selection table, then input the new specification description content of the target equipment in the interface editing box, and call the SetValueWithString function to update the specification description attribute of the target equipment, and synchronize the updated equipment information to the equipment selection table display area.

[0035] In step 5, when modifying parameter information, input the target value to be modified in the new parameter value editing box, assign the corresponding parameter using the Valuate method according to the parameter name, synchronize the updated parameter information to the parameter list display area, and finally use the GlobalPLMUpdate method of the CATIPLMUpdateEngine interface to update the advanced copy result to the child node.

[0036] The application has the advantages that the three-dimensional quick design and arrangement method of HVAC equipment based on CATIA is provided, standard three-dimensional templates of arrangement of different system equipment are established in advance and stored in a resource library, then the templates are called and system parameters are modified in different projects, so that the equipment design and arrangement of the project can be accurately and quickly completed, and the efficiency and accuracy of the equipment design and arrangement are improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 Fig. 1 is a schematic diagram of equipment units of a heating and ventilation system in the application;

[0038] Figure 2 Fig. 2 is a schematic diagram of positioning points of a wind pipe line and air outlet elements in the application;

[0039] Figure 3 Fig. 3 is a schematic diagram of three-dimensional arrangement of a heating and ventilation system in the application;

[0040] Figure 4 Fig. 4 is a schematic diagram of positioning elements of a three-dimensional model of a heating and ventilation system in the application;

[0041] Figure 5 Fig. 5 is a schematic diagram of positioning elements in a skeleton structure tree of an air conditioning and ventilation system in the application;

[0042] Figure 6 Fig. 6 is a schematic diagram of an interface of equipment and parameter information generated by arrangement in the application;

[0043] Figure 7 Fig. 7 is a schematic diagram of an interface of batch modification of equipment information by importing and exporting a table in the application;

[0044] Figure 8 Fig. 8 is a schematic diagram of a parameter information modification interface of an equipment system in the application. DETAILED DESCRIPTION

[0045] The application will be described in detail below in combination with the drawings and specific embodiments.

[0046] Embodiment 1

[0047] The application provides a three-dimensional quick design and arrangement method of HVAC equipment based on CATIA, which is implemented according to the following steps:

[0048] P1, activate a three-dimensional quick design function command in a three-dimensional view, and select a target system and a design scheme to be arranged on a pop-up interface.

[0049] P2, create a positioning element under a skeleton node of the target system to be arranged.

[0050] P3, calling the design scheme template selected by P1 and performing three-dimensional space positioning according to the positioning element created by P2, the arrangement result is displayed in the three-dimensional skeleton of the selected parent node, all devices in the design scheme are displayed in the device selection table of the interface, and the parameter information of the device system is displayed in the parameter list.

[0051] P4, after the scheme arrangement is completed, the GetValueAsString function is used to read the name and description of the instance, which is displayed in the device selection table, the GetModelServices()->VisibleParms method of the CATCkeGlobalFunctions interface is called to obtain all parameters in the parameter set under the template, and the parameter name, parameter value and unit are displayed in the parameter list, and the user can modify and update the device specification description or the arrangement system parameter according to the requirement.

[0052] P5, the calling of the system template and the three-dimensional arrangement are completed.

[0053] By the above-mentioned mode, the three-dimensional rapid design and arrangement process of the HVAC and other professional system devices is encapsulated into a functional command by using the CATIA three-dimensional software, and the design rules and system parameters are embedded. Compared with the traditional three-dimensional arrangement process, a series of complex operations need to be manually performed by the user, such as selecting and configuring the system, setting the color, drawing the air pipe and adding the pipe fitting, connecting the device and the like, the three-dimensional design and arrangement process can be automatically completed by the user only by clicking a button once, the cumbersome operation steps are simplified, and the design efficiency is improved. Compared with the traditional three-dimensional arrangement modeling mode, the application has the advantages of convenient operation, standardized model, low technical threshold, optimized resource utilization and the like, and these advantages make the encapsulated functional button become a kind of efficient and convenient design tool which is easy to use, and help to improve the overall quality and efficiency of the design.

[0054] Embodiment 2

[0055] The application provides a three-dimensional rapid design and arrangement method for HVAC and mechanical and electrical equipment based on CATIA, and the following scheme is preferred for P1 based on the embodiment 1:

[0056] After the "3D quick design" function is activated, the CAA interface CompleteAndOpen is called in the program to open the directory of the resource library, all templates in the "3D quick design template" directory and subdirectories are read by the GetLibrary method of the PLMCLGPublicLibraryNavServices interface, and are stored in a structure array, and the directory string is put into the "system 3D design" and "system design scheme" drop-down boxes by using the SetLine method of the CATDlgCombo type to initialize. The design scheme template to be arranged is selected, the template is found according to the prd identifier of the template in the background, the Duplicate interface of the CATAdpDuplicator is called to perform advanced copying, and the copying result is inserted into the selected parent node by using AddProduct.

[0057] Among them, the template to be arranged needs to be established in advance. Taking the heating, ventilation and air conditioning wind system as an example, when the device model of the heating, ventilation and air conditioning parameterized wind system is established, firstly, a process geometry set is constructed to store all design steps in the device three-dimensional modeling process. Secondly, a device body sketch and a detail sketch are created. Thirdly, the convex boss, recess and other commands in the entity are used to create entity models of the 1st, 2nd and 3rd bodies based on the sketches. Finally, the created body device and the positioning element are linked by assembly.

[0058] Then, the air conditioner wind system model air pipe and air pipe part template are created. Specifically, firstly, a process geometry set is constructed to store all design steps in the air pipe and part three-dimensional modeling process. Secondly, the air pipe creation element point is obtained by offsetting based on the device port point in turn, and the offset value is associated with the parameter in the parameter set. Finally, the HVAC module is used to establish the air pipe template. The starting point of the air pipe is from the device air outlet port point, and the created element points are connected in turn. In the connection of the air pipe, the element connection option in the 3DE preference needs to be activated.

[0059] Embodiment 3

[0060] The application provides a CATIA-based three-dimensional quick design and arrangement method for heating, ventilation and mechanical equipment. Based on the embodiment 1, the P2 preferably has the following scheme:

[0061] After the skeleton positioning element is created, the skeleton positioning element under the parent node and the positioning element in the template are obtained according to the positioning element name, the positioning elements are respectively constructed into an axis system by using the RootAxis interface of the CATMathAxis, the axis system of the template is converted into the axis system of the skeleton positioning element by using the CATMathTransformation interface, and the template is moved to a suitable position of the total skeleton. The specific operation includes the following steps:

[0062] P201, determine the positioning condition of the arrangement system.

[0063] P202, construct the positioning geometry set, and store the elements and link relations required for positioning reference in the three-dimensional modeling process of the system. The construction idea of the atlas is: the original points, lines, and planes of the template are named, and the information required to be associated with them in the plant system is named, such as elevation surface, plant left xxx, plant right xxx, and joint surface. All subsequent devices and parts will be arranged based on the named elements. Taking the arrangement of the heating, ventilation, and air conditioning wind system as an example, a geometry set named "air conditioning wind positioning" is created under the node, and a point and two line segments are generated in the geometry set for positioning, which are named "air conditioning wind system positioning point", "air conditioning wind system positioning line 1", and "air conditioning wind system positioning line 2".

[0064] Embodiment 4

[0065] The application provides a three-dimensional rapid design and arrangement method of heating, ventilation, and mechanical and electrical equipment based on CATIA. On the basis of embodiment 1, if it is necessary to modify the specifications or descriptions of the equipment in batches in P4, the modification can be completed by exporting and importing a table, that is, the table is exported to a specified position, the modification is completed in the table and saved, and then the table is imported to complete the batch modification of the equipment information. Specifically:

[0066] Clicking the "export table" button, the system exports the equipment selection table in the form of a table to the selected path by using the SaveAs method of the CExcelRW interface. After filling in the equipment specification description in the table in batches, click "import table", use SetValueWithString to modify the description of the equipment instances under the template in batches, and display the equipment selection table. At the same time, the specification of a single equipment can be modified. Modify the content of the editing box in the interface and click the "change equipment specification" button. The system will call the SetValueWithString function to modify the single equipment.

[0067] Embodiment 5

[0068] The application provides a three-dimensional rapid design and arrangement method of heating, ventilation, and mechanical and electrical equipment based on CATIA. On the basis of embodiment 1, if it is necessary to modify the parameters of the arrangement system in P4, input the parameter value after the modification in the "new parameter value" editing box in the interface, and click "parameter modification" to complete the modification of the corresponding parameters of the system template, and synchronize to the parameter list. At the same time, the modified parameters are displayed correspondingly on the model. Specifically:

[0069] Enter the parameter value to be modified in the interface "New parameter value" edit box, click the "Parameter modification" button, and assign the corresponding parameter using the Valuate method according to the parameter name, modify the parameter list at the same time, and update the advanced copy result to the child node using the GlobalPLMUpdate method of the CATIPLMUpdateEngine interface to display the parameter modification on the model.

[0070] Embodiment 6

[0071] The application provides a CATIA-based three-dimensional rapid design and layout method for HVAC equipment, and the implementation steps are as follows:

[0072] P1, select the system and design scheme to be laid out on the interface.

[0073] Taking the scheme of the HVAC system as an example, the engineering template creation process of the HVAC system model equipment is as follows: first, create a process geometry set to store the design process in the three-dimensional modeling process of the equipment; second, create the sketch and detail sketch of the body, and create the body entity models No. 1, No. 2 and No. 3 based on the sketch by using the boss, groove and other commands in the entity; finally, the created body equipment and the positioning elements are linked through assembly, and the result is as shown in Figure 1 .

[0074] The creation process of the air pipe and the air pipe parts and other components of the air conditioning system model is as follows: first, create a process geometry set to store the design steps in the three-dimensional modeling process of the air pipe and the parts; second, sequentially obtain the creation element points of the air pipe based on the device endpoint port offset, and associate the offset value with the parameters in the parameter set, and the obtained air pipe element points are as shown in Figure 2 . Finally, the HVAC module is used to establish the air pipe template, the starting point of the air pipe is from the air outlet port of the device, and the created element points are sequentially connected, and it should be noted that the option of maintaining connection with the element in the 3DE preferences should be activated when connecting the air pipe, and then the creation of the air pipe is completed, and the result is as shown in Figure 3 . Thus, the creation of the template is completed.

[0075] P2, create the positioning elements in the HVAC system model skeleton.

[0076] Specifically, a geometry set named "air conditioning air positioning" is created under the node, the information associated with the factory building system is stored in the geometry set, a point and two line segments are created under the air conditioning air positioning for positioning, and are named "air conditioning air system positioning point", "air conditioning air system positioning line 1" and "air conditioning air system positioning line 2" respectively. The creation of the positioning elements in the skeleton tree is completed, and the result is as shown in Figure 4 and Figure 5 .

[0077] P3, call P1 to establish the scheme template, according to the spatial arrangement of the positioning elements in P2, the results of the arrangement are shown in the skeleton of the selected parent node, as shown in Figure 6 All devices in the scheme are displayed in the device selection table of the interface, and the parameter information of the system is displayed in the parameter list.

[0078] P4, if you want to modify the system parameters of the arrangement, as shown in Figure 7 , enter the desired modified parameter value in the interface "new parameter value" edit box, click "parameter modification" to complete the modification of the corresponding parameters of the system model, and synchronize to the parameter list, as shown in Figure 8 . Click OK to complete the three-dimensional rapid design and arrangement of the heating and ventilation system. The arrangement result is shown in Figure 3 .

Claims

1. A method for three-dimensional rapid design and arrangement of HVAC equipment based on CATIA, characterized in that, Comprising the following steps: Step 1, selecting the target system and the corresponding design scheme template in the resource library on the structural tree skeleton; Step 2, creating a positioning element under the target system skeleton node; Specifically, first determine the spatial reference basis for the three-dimensional arrangement of the target system according to the existing spatial reference features of the plant three-dimensional model, then create a geometry set under the target system skeleton node, which is used to store the positioning elements and link relationships of the system three-dimensional modeling, name the positioning elements in the geometry set according to the plant system correlation information rules, create a point geometry element and two line geometry elements in turn, then get the positioning elements of the parent node skeleton and the positioning elements in the template according to the positioning element names, use the RootAxis method of the CATMathAxis interface to build an axis system for each positioning element, then call the CATMathTransformation interface to convert the axis system coordinates of the template to the axis system coordinates of the skeleton positioning element, complete the matching of the template spatial position, and finally move the template to the preset spatial position of the target system skeleton through the axis system after coordinate conversion; Step 3, calling the design scheme template to reposition the HVAC equipment model and supporting pipeline model in the three-dimensional skeleton, all models are spatially positioned based on the positioning elements, and the arrangement result is displayed in the three-dimensional skeleton of the selected parent node; Specifically including the following steps: Step 3.1, according to the target system and the design scheme selected in step 1, call the corresponding system three-dimensional scheme template from the three-dimensional rapid design template resource library to get the HVAC equipment model and supporting pipeline model; Step 3.2, get all named positioning elements in the geometry set in step 2, match the original positioning elements in the template with the plant system correlation information; Step 3.3, according to the positioning reference after axis system coordinate conversion in step 2, use the CATMathTransformation interface to reposition the spatial position of all HVAC equipment models and supporting pipeline models; Step 3.4, insert the repositioned HVAC equipment model and supporting pipeline model into the parent node specified when selecting the template in step 1, to form the three-dimensional arrangement model of the target system; Step 4, after the design scheme template arrangement is completed, all equipment information is loaded into the equipment selection table, and all parameter information is loaded into the parameter list; Step 5, update the equipment and parameter information according to the requirements, complete the three-dimensional design and arrangement of the HVAC equipment.

2. The CATIA-based HVAC 3D quick design layout method of claim 1, wherein, The step 1 is specifically: firstly, activating the three-dimensional rapid design function command in the CATIA interface, calling the CompleteAndOpen method of the CAA interface to open the three-dimensional rapid design template resource library directory, reading all templates under the resource library directory and subdirectory through the GetLibrary method of the PLMCLGPublicLibraryNavServices interface, storing the template information as a structure array, using the SetLine method of the CATDlgCombo type to fill the template information in the structure array into the system three-dimensional design drop-down box and the system design scheme drop-down box respectively, and completing the initialization of the drop-down box options; After selecting the target system and the design scheme template, the Duplicate interface of the CATAdpDuplicator is called according to the selected template prd identifier to perform an advanced copy operation on the target template, and the copy result is temporarily stored for subsequent process calling.

3. The CATIA-based HVAC 3D quick design layout method of claim 1, wherein, The step 4 is specifically: calling the GetValueAsString function to read the name attribute value and specification description attribute value of all devices in the design scheme template, and filling all device name attribute values and specification description attribute values in the form of a list into the device selection table display area of the three-dimensional rapid design interface; The model service object is obtained through the GetModelServices method of the CATCkeGlobalFunctions interface, and then the VisibleParms method is called to read the name, value and unit of measurement of all parameters in the scheme template parameter set, and fill them in the form of a list into the parameter list display area of the three-dimensional rapid design interface.

4. The CATIA-based HVAC 3D quick design layout method of claim 1, wherein, In the step 5, when the device information needs to be modified in batches, the device selection table is exported to the specified file storage path through the SaveAs method of the CExcelRW interface, then the target device information is edited and modified in batches in the exported table file, finally the table is imported and the SetValueWithString function is used for batch attribute assignment of the device instance, and the updated device information is synchronized and refreshed to the device selection table display area.

5. The CATIA based HVAC 3D quick design layout method of claim 1, wherein, In the step 5, when the device information needs to be modified in batches, the device selection table is exported to the specified file storage path through the SaveAs method of the CExcelRW interface, then the target device information is edited and modified in batches in the exported table file, finally the table is imported and the SetValueWithString function is used for batch attribute assignment of the device instance, and the updated device information is synchronized and refreshed to the device selection table display area.

6. The CATIA based HVAC 3D quick design layout method of claim 1, wherein, In the step 5, when the parameter information needs to be modified, the target value to be modified is input in the new parameter value edit box, the corresponding parameter is assigned using the Valuate method according to the parameter name, the updated parameter information is synchronized and refreshed to the parameter list display area, and finally the GlobalPLMUpdate method of the CATIPLMUpdateEngine interface is used to update the advanced copy result to the child node.

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