Molded line design method of compressor lift limiter and related device

Abstract

The invention belongs to the technical field of compressor structure design, and discloses a molded line design method of a compressor lift limiter and a related device, and the method comprises the following steps: constructing a three-dimensional model of a compressor exhaust assembly; the three-dimensional model of the compressor exhaust assembly comprises an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model; according to the three-dimensional model of the compressor exhaust assembly, a finite element mesh model of the compressor exhaust assembly is generated, fluid-solid coupling simulation calculation is carried out, and a fluid-solid coupling simulation calculation result is obtained; according to the fluid-solid coupling simulation calculation result, a curve of the displacement deformation value of an exhaust valve plate in the exhaust assembly of the compressor changing along with time is drawn; obtaining a design result of the lift limiter in the compressor exhaust assembly according to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly along with the time change; according to the method, the design parameters and the molded line shape of the lift limiter are accurately determined, and the reliability and adaptability of the lift limiter are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor structure design, and in particular relates to a profile design method of a compressor lift limiter and a related device. Background Art

[0002] The compressor exhaust assembly is a key structure in the compressor used to discharge the compressed gas out of the system. It has an important impact on the performance, noise and reliability of the compressor. Figure 1-2 As shown, the compressor exhaust assembly includes an exhaust valve seat, a lift limiter 2, an exhaust valve plate 3 and a fastener 4; wherein the exhaust valve seat is usually arranged on an upper cover 1, on which an exhaust port is arranged; the lift limiter 2 includes a straight section and a lift section connected in sequence, the straight section is fixedly connected to the exhaust valve seat, and the lift section extends in a direction away from the straight section and in a direction away from the exhaust valve seat; the exhaust valve plate 3 is arranged between the exhaust valve seat and the lift limiter 2; the fastener 4 is used to fix the exhaust valve seat, the lift limiter, the exhaust valve plate and other components together to ensure the stability and reliability of the exhaust assembly.

[0003] Among them, the lift limiter 2, as an important component of the exhaust assembly, plays a role in limiting the displacement during the movement of the exhaust valve plate 3, thereby preventing the exhaust valve plate 3 from being deformed too much, causing plastic deformation or even breaking; specifically, during the exhaust process of the compressor, the exhaust valve plate 3 is deformed by the impact of the high-pressure and high-speed exhaust airflow, and contacts and collides with the lift limiter 2 at the upper dead point of the movement, thereby limiting the maximum displacement of the exhaust valve plate 3; therefore, the profile design of the lift limiter 2 is very critical, and different profile designs will have an important impact on the movement deformation of the exhaust valve plate, thereby affecting the performance, noise, reliability and other aspects of the compressor.

[0004] At present, the profile of the traditional lift limiter 2 is designed with a segmented arc function curve. This method is an approximate design method, which is relatively simple and rough and has poor adaptability, and cannot effectively guarantee the reliability of the exhaust valve plate 3; among them, when the material, structure, etc. of the exhaust valve plate 3 change, the profile of the lift limiter 2 will no longer adapt to the deformation of the exhaust valve plate 3, thereby causing a more violent collision between the exhaust valve plate 3 and the lift limiter 2, thereby generating greater vibration noise, seriously affecting the reliability of the exhaust valve plate 3. Summary of the invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a method and related device for designing the profile of a compressor lift limiter, so as to solve the technical problem that the profile of a traditional lift limiter has poor adaptability when designed with a segmented arc function curve and cannot effectively ensure the reliability of the exhaust valve plate.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a method for designing a profile of a compressor lift limiter, comprising: Constructing a three-dimensional model of a compressor exhaust assembly; wherein the three-dimensional model of the compressor exhaust assembly includes an upper cover model, a lift limiter model, an exhaust valve plate model, and a fastener model; generating a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component; Based on the finite element mesh model of the compressor exhaust component, a fluid-solid coupling simulation calculation is performed to obtain a fluid-solid coupling simulation calculation result; According to the fluid-solid coupling simulation calculation results, a curve showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time is drawn; According to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time, the design result of the lift limiter in the compressor exhaust assembly is obtained.

[0007] Furthermore, the three-dimensional model of the compressor exhaust component is saved in x_t format.

[0008] Further, the process of generating a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component is as follows: The three-dimensional model of the compressor exhaust component is imported into the finite element simulation pre-processing software to perform model simplification, fluid domain extraction, boundary naming and mesh division processing to obtain a finite element mesh model of the compressor exhaust component; Among them, the specific operation of extracting the fluid domain processing is: extracting the fluid domain and retaining the solid domain, so that the model before meshing includes two parts, the fluid domain and the solid domain; the finite element mesh model of the compressor exhaust component is saved in an msh format file, and the mesh division of the fluid domain and the solid domain in the finite element mesh model of the compressor exhaust component has common nodes.

[0009] Furthermore, based on the finite element mesh model of the compressor exhaust assembly, a fluid-solid coupling simulation calculation is performed to obtain a fluid-solid coupling simulation calculation result, as follows: The finite element mesh model of the compressor exhaust component is imported into a predetermined finite element simulation software, and a fluid-solid coupling simulation calculation is performed based on predetermined simulation calculation parameters to obtain a fluid-solid coupling simulation calculation result.

[0010] Furthermore, the predetermined simulation calculation parameter setting objects include fluid domains and solid domains; the predetermined simulation calculation parameters include material parameter settings, boundary condition settings, dynamic mesh method settings, solution method settings and simulation time step settings for the fluid domain and solid domain.

[0011] Furthermore, the boundary condition setting includes inlet boundary condition setting, outlet boundary condition setting, fixed wall boundary condition setting and fluid-solid coupling surface boundary condition setting; among which, the fixed wall boundary condition setting is specifically: setting the node displacement in the three coordinate axis directions to zero; the fluid-solid coupling surface boundary condition setting is specifically: setting the displacement in the three coordinate axis directions to Intrinsic FSI.

[0012] Furthermore, the predetermined finite element simulation software adopts Fluent software.

[0013] The present invention also provides a compressor lift limiter profile design system, comprising: A three-dimensional model building module, used to build a three-dimensional model of the compressor exhaust assembly; wherein the three-dimensional model of the compressor exhaust assembly includes an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model; A finite element model building module, used for generating a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component; A simulation calculation model is used to perform fluid-solid coupling simulation calculation based on a finite element mesh model of the compressor exhaust component to obtain a fluid-solid coupling simulation calculation result; A curve drawing module, used for drawing a curve showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time according to the fluid-solid coupling simulation calculation result; The design result output module is used to obtain the design result of the lift limiter in the compressor exhaust assembly according to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time.

[0014] The present invention also provides a profile design device for a compressor lift limiter, comprising: a processor suitable for executing a computer program; A computer-readable storage medium having a computer program stored therein, wherein when the computer program is executed by the processor, the method for designing a profile of a compressor lift limiter is executed.

[0015] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for designing a profile of a compressor lift limiter is implemented.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The method for designing the profile of a compressor limiter provided by the present invention can comprehensively consider the interaction between fluid and solid, and more accurately simulate the dynamic response of the exhaust component in the actual working process by constructing a finite element mesh model of the compressor exhaust component and performing fluid-solid coupling simulation calculations; according to the fluid-solid coupling simulation calculation results, a curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust component changing with time is drawn, which can intuitively reflect the dynamic response characteristics of the valve plate in the force-bearing process, and then accurately determine the design parameters and profile shape of the lift limiter, and effectively ensure the reliability and adaptability of the lift limiter; the present invention can design the best lift limiter profile for different exhaust valve plate structures, so that the exhaust valve plate and the lift limiter are optimally matched, and the lift limiter designed by this method plays an important role in improving compressor performance, reducing vibration noise and improving reliability.

[0017] The compressor lift limiter profile design system, compressor lift limiter profile design device and computer-readable storage medium provided by the present invention have all the advantages of the compressor lift limiter profile design method mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the assembly of the compressor exhaust assembly; Figure 2 is a cross-sectional view of a compressor exhaust assembly; Figure 3 A flow chart of a method for designing a profile of a compressor lift limiter provided in Example 1; Figure 4 is a schematic diagram of a finite element mesh model of a compressor exhaust assembly in Example 1; Figure 5 Schematic diagram of the fluid domain and solid domain of the model in Example 1; Figure 6 is a displacement deformation diagram of the exhaust valve section in Example 1; Figure 7 is a curve diagram showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly in Example 1 versus time; Figure 8 A structural block diagram of a profile design system for a compressor lift limiter provided in Example 2; Fig. 9This is a structural block diagram of the profile design device for the compressor lift limiter provided in Example 3.

[0020] Among them, 1 is an upper cover, 2 is a lift limiter, 3 is an exhaust valve disc, 4 is a fastener, 5 is a fluid domain, and 6 is a solid domain. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in combination with the drawings in the embodiments of this application; obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Example 1 As attached Figure 3 As shown, this embodiment 1 provides a method for designing a profile of a compressor lift limiter, comprising the following steps: Step 1: construct a three-dimensional model of the compressor exhaust assembly; wherein the three-dimensional model of the compressor exhaust assembly includes an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model.

[0023] Specifically, the process of constructing the three-dimensional model of the compressor exhaust assembly comprises the following steps: The upper cover model, lift limiter model, exhaust valve plate model and fastener model are established by using 3D modeling software, wherein the 3D modeling software is SolidWorks software, Pro-E software or UG software.

[0024] According to the assembly requirements of the compressor exhaust assembly, the upper cover model, the lift limiter model, the exhaust valve plate model and the fastener model are assembled to establish a three-dimensional assembly model to obtain the three-dimensional model of the compressor exhaust assembly; wherein the three-dimensional model of the compressor exhaust assembly is saved in the x_t format.

[0025] Step 2: Generate a finite element mesh model of the compressor exhaust component based on the three-dimensional model of the compressor exhaust component. Specifically, the process of generating the finite element mesh model of the compressor exhaust component is as follows: The three-dimensional model of the compressor exhaust component is imported into the finite element simulation pre-processing software to perform simulation model pre-processing to obtain the finite element mesh model of the compressor exhaust component; wherein the simulation model pre-processing operations specifically include: model simplification, fluid domain extraction, boundary naming and mesh division processing.

[0026] It should be noted that the specific operation of extracting the fluid domain is: extracting the fluid domain and retaining the solid domain, so that the model before meshing includes two parts, the fluid domain and the solid domain; the finite element mesh model of the compressor exhaust component is saved in an msh format file, and the mesh division of the fluid domain and the solid domain in the finite element mesh model of the compressor exhaust component shares common nodes.

[0027] Step 3: Based on the finite element mesh model of the compressor exhaust component, perform fluid-solid coupling simulation calculation to obtain fluid-solid coupling simulation calculation results. Specifically, the finite element mesh model of the compressor exhaust component is imported into a predetermined finite element simulation software, and based on predetermined simulation calculation parameters, a fluid-solid coupling simulation calculation is performed to obtain a fluid-solid coupling simulation calculation result; wherein the predetermined finite element simulation software uses Fluent software.

[0028] The setting objects of the predetermined simulation calculation parameters include the fluid domain and the solid domain in the finite element mesh model of the compressor exhaust component; the predetermined simulation calculation parameters include the material parameter setting, boundary condition setting, dynamic mesh method setting, solution method setting and simulation time step setting of the fluid domain and the solid domain; wherein the boundary condition setting includes the inlet boundary condition setting, the outlet boundary condition setting, the fixed wall boundary condition setting and the fluid-solid coupling surface boundary condition setting; wherein the fixed wall boundary condition setting is specifically: the node displacement in the three coordinate axis directions is set to zero; the fluid-solid coupling surface boundary condition setting is specifically: the displacement in the three coordinate axis directions is set to Intrinsic FSI.

[0029] It should be noted that the operation process of using Fluent software for fluid-solid coupling simulation calculation is as follows: Step 31: Import the finite element mesh model of the compressor exhaust component into Fluent software Start ANSYS Fluent software; in the interface of Fluent software, select "File" > "Read" > "Mesh..." until you browse to the msh format file of the finite element mesh model of the compressor exhaust component and import it; check the mesh information to ensure that all faces, units and nodes are read correctly.

[0030] Step 32: Set simulation calculation parameters In "Define" > "Materials...", set the material properties; in "Define" > "BoundaryConditions...", set the boundary conditions; in "Define" > "Models...", select the solver and set the physical model (such as laminar or turbulent model); secondly, set the viscosity model, and activate the structure option and select the LinearElasticity model.

[0031] Step 33, set the time item and run the simulation; after the simulation is completed, use Fluent's post-processing tool to view and analyze the results to obtain the fluid-solid coupling simulation calculation results.

[0032] Step 4: Based on the fluid-solid coupling simulation calculation results, a curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time is drawn. Specifically, the implementation steps are as follows: The displacement deformation data of the exhaust valve plate is extracted from the fluid-solid coupling simulation calculation results; wherein the displacement deformation data of the exhaust valve plate includes a time step and a displacement deformation value corresponding to each time step.

[0033] The displacement deformation data of the exhaust valve plate is imported into a predetermined drawing software to draw a curve, and a curve showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time is obtained; wherein the predetermined drawing software includes MATLAB, matplotlib library, Excel or Origin; wherein the horizontal axis of the curve showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time is time, and the vertical axis is the displacement deformation value.

[0034] Step 5: According to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time, the design result of the lift limiter in the compressor exhaust assembly is obtained. Specifically, the implementation process is as follows: From the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time, the maximum displacement deformation of the exhaust valve plate and the time required to reach the maximum displacement deformation are extracted; the maximum displacement deformation of the exhaust valve plate and the time required to reach the maximum displacement deformation are used as the design basis to determine the limit position of the lift limiter in the compressor exhaust assembly and the structural characteristics of the limiter.

[0035] It should be noted that the position of the lift limiter is set based on the maximum value of the displacement deformation curve to ensure that the exhaust valve plate can be stably in contact with it when the maximum lift is reached; and the specific shape and size of the lift limiter are designed in combination with the overall structure and spatial layout of the compressor to ensure that the lift limiter has sufficient strength and rigidity to withstand the impact and wear of the exhaust valve plate during the exhaust process; secondly, considering the contact surface between the limiter and the valve plate, appropriate materials and surface treatments are selected to improve wear resistance and lubricity.

[0036] Example description: Taking the profile design process of the lift limiter in a compressor exhaust assembly as an example, the profile design method of the compressor lift limiter described in the above embodiment 1 is supplemented as follows; SolidWorks software is used to establish the three-dimensional model of each part of the compressor exhaust assembly, and the upper cover model, lift limiter model, exhaust valve plate model and fastener model are obtained; among them, the upper cover model, lift limiter model, exhaust valve plate model and fastener model are assembled to obtain the three-dimensional model of the compressor exhaust assembly, and saved in x_t format.

[0037] Import the x_t file of the 3D model of the compressor exhaust component into the SpaceClaim software for simulation pre-processing, obtain the finite element network model of the compressor exhaust component, and save it in msh format, as shown in the attached figure. Figure 4 As shown in the figure, the simulation pre-processing includes simplifying the model, extracting the fluid domain and naming the boundary, and also using the Ansys mesh module to divide the grid. The specific operation of extracting the fluid domain is to extract the fluid domain and retain the solid domain, so that the model before dividing the grid includes two parts: the fluid domain and the solid domain, as shown in the figure. Figure 5 shown.

[0038] The msh file of the finite element network model of the compressor exhaust component is imported into the Fluent software to perform fluid-solid coupling calculation to obtain the fluid-solid coupling simulation calculation result; preferably, the fluid-solid coupling simulation calculation result is a displacement deformation diagram of the exhaust valve section, as shown in the attached figure. Figure 6 Shown Among them, the simulation solution type is set to Pressure-Based, the time item is set to Transient, the viscosity model uses the ke model, the structure option is activated and the Linear Elasticity model is selected; the fluid domain and the solid domain are assigned predetermined materials respectively; the boundary conditions are set, including the inlet boundary conditions, the outlet boundary conditions, the fixed wall surface and the fluid-solid coupling surface; among them, the fixed wall surface boundary sets the node displacements in the three directions of the X-axis, Y-axis and Z-axis to zero, and the displacements in the three directions of the X-axis, Y-axis and Z-axis on the fluid-solid coupling surface boundary are all set to Intrinsic FSI; open the dynamic mesh item for dynamic mesh setting; among them, check the Smoothing and Meshing options in the dynamic mesh setting, and set the fluid-solid coupling surface to Intrinsic FSI in the dynamic mesh area; select the predetermined solution parameters in the solution method option; set the simulation time step and number of steps to ensure that the simulation process can converge well, and perform simulation solution calculation after initialization.

[0039] It should be noted that if non-convergence occurs during the simulation solution calculation process, adjustments can be made by checking the mesh quality, boundary condition settings, dynamic mesh settings, solution parameter settings, and reducing the simulation step size until the simulation process converges.

[0040] After the simulation solution is completed, the fluid-solid coupling simulation calculation results are post-processed. According to the design requirements, the displacement deformation values ​​of the exhaust valve plate in the Z direction at different times are obtained, and then the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly is plotted as a curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly over time, as shown in the attached figure. Figure 7 As shown; finally, the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time is used as the design basis of the lift limiter profile, and the design result of the lift limiter in the compressor exhaust assembly is obtained.

[0041] The compressor generating limiter profile design method described in the present embodiment 1 can accurately reflect the geometric relationship and motion relationship between the various components by constructing a three-dimensional model of the compressor exhaust assembly, and provide a reliable basis for subsequent analysis and calculation; based on the three-dimensional model of the compressor exhaust assembly, a finite element mesh model of the compressor exhaust assembly is generated, which can realize the refined analysis of the various components of the exhaust assembly and capture the subtle changes such as stress and strain of the components during the force-bearing process; wherein, through reasonable mesh division and unit selection, the accuracy and convergence of the finite element calculation can be ensured, and accurate data support can be provided for subsequent analysis; secondly, in the fluid-solid coupling simulation calculation, the interaction between the fluid domain and the solid domain is comprehensively considered to accurately simulate the dynamic response of the exhaust assembly in the actual working process; by drawing a curve of the displacement deformation value of the exhaust valve plate changing with time, according to the changing trend and characteristic points of the curve, the working state of the valve plate can be analyzed, which provides an important basis for the design optimization of the lift limiter, so as to achieve the purpose of optimizing the design result of the lift limiter and improve the overall performance and service life of the compressor.

[0042] Example 2 As attached Figure 8 As shown, this embodiment 2 provides a compressor lift limiter profile design system, including a three-dimensional model building module, a finite element model building module, a simulation calculation model, a curve drawing module and a design result output module.

[0043] A three-dimensional model building module is used to build a three-dimensional model of a compressor exhaust component; wherein the three-dimensional model of the compressor exhaust component includes an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model; a finite element model building module is used to generate a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component; a simulation calculation model is used to perform fluid-solid coupling simulation calculation based on the finite element mesh model of the compressor exhaust component to obtain fluid-solid coupling simulation calculation results; a curve drawing module is used to draw a curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust component changing with time according to the fluid-solid coupling simulation calculation results; a design result output module is used to obtain the design result of the lift limiter in the compressor exhaust component according to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust component changing with time.

[0044] Example 3 As attached Fig. 9 As shown, this embodiment 3 provides a profile design device for a compressor lift limiter, including: a memory for storing a computer program; and a processor for implementing the steps of a profile design method for a compressor lift limiter when executing the computer program.

[0045] When the processor executes the computer program, the steps of implementing the above-mentioned compressor lift limiter profile design method are, for example: Construct a three-dimensional model of a compressor exhaust component; wherein the three-dimensional model of the compressor exhaust component includes an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model; generate a finite element mesh model of the compressor exhaust component based on the three-dimensional model of the compressor exhaust component; perform fluid-solid coupling simulation calculation based on the finite element mesh model of the compressor exhaust component to obtain fluid-solid coupling simulation calculation results; plot a curve of displacement deformation values ​​of the exhaust valve plate in the compressor exhaust component varying with time based on the fluid-solid coupling simulation calculation results; obtain a design result of the lift limiter in the compressor exhaust component based on the curve of displacement deformation values ​​of the exhaust valve plate in the compressor exhaust component varying with time.

[0046] Alternatively, when the processor executes the computer program, the functions of each module in the above-mentioned compressor lift limiter profile design system are realized, for example: A three-dimensional model building module is used to build a three-dimensional model of a compressor exhaust component; wherein the three-dimensional model of the compressor exhaust component includes an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model; a finite element model building module is used to generate a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component; a simulation calculation model is used to perform fluid-solid coupling simulation calculation based on the finite element mesh model of the compressor exhaust component to obtain fluid-solid coupling simulation calculation results; a curve drawing module is used to draw a curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust component changing with time according to the fluid-solid coupling simulation calculation results; a design result output module is used to obtain the design result of the lift limiter in the compressor exhaust component according to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust component changing with time.

[0047] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing preset functions, and the instruction segments are used to describe the execution process of the computer program in the profile design device of the compressor lift limiter.

[0048] The line design device of the compressor lift limiter can be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The line design device of the compressor lift limiter can include, but is not limited to, a processor and a memory. Those skilled in the art can understand that the above is an example of the line design device of the compressor lift limiter, and does not constitute a limitation on the line design device of the compressor lift limiter, and can include more components than the above, or combine certain components, or different components. For example, the line design device of the compressor lift limiter can also include input and output devices, network access devices, buses, etc.

[0049] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processor is the control center of the compressor lift limiter molding device, and uses various interfaces and lines to connect various parts of the compressor lift limiter molding device.

[0050] The memory can be used to store the computer program and / or module, and the processor implements various functions of the compressor lift limiter profile design device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0051] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0052] Example 4 This embodiment 4 also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the method for designing a profile of a compressor lift limiter are implemented.

[0053] The module / unit integrated in the compressor lift limiter profile design system can be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as an independent product.

[0054] Based on such understanding, the present invention implements all or part of the processes in the above-mentioned compressor lift limiter profile design method, and can also be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned compressor lift limiter profile design method can be implemented. The computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or preset intermediate form, etc.

[0055] The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0056] It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electrical carrier signals and telecommunication signals.

[0057] The lift limiter profile design method for a compressor provided by the present invention can design the optimal lift limiter profile for different exhaust valve plate structures, thereby achieving the optimal match between the exhaust valve plate and the lift limiter; the lift limiter designed by this method plays an important role in improving compressor performance, reducing vibration and noise, and improving reliability.

[0058] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. A method for designing a profile of a compressor lift limiter, characterized in that: include: Constructing a three-dimensional model of a compressor exhaust assembly; wherein the three-dimensional model of the compressor exhaust assembly includes an upper cover model, a lift limiter model, an exhaust valve plate model, and a fastener model; generating a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component; Based on the finite element mesh model of the compressor exhaust component, a fluid-solid coupling simulation calculation is performed to obtain a fluid-solid coupling simulation calculation result; According to the fluid-solid coupling simulation calculation results, a curve showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time is drawn; According to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time, the design result of the lift limiter in the compressor exhaust assembly is obtained.

2. A method for designing a profile of a compressor lift limiter according to claim 1, characterized in that: The three-dimensional model of the compressor exhaust component is saved in the x_t format.

3. The method for designing a profile of a compressor lift limiter according to claim 1, characterized in that: The process of generating a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component is as follows: The three-dimensional model of the compressor exhaust component is imported into the finite element simulation pre-processing software to perform model simplification, fluid domain extraction, boundary naming and mesh division processing to obtain a finite element mesh model of the compressor exhaust component; Among them, the specific operation of extracting the fluid domain processing is: extracting the fluid domain and retaining the solid domain, so that the model before meshing includes two parts, the fluid domain and the solid domain; the finite element mesh model of the compressor exhaust component is saved in an msh format file, and the mesh division of the fluid domain and the solid domain in the finite element mesh model of the compressor exhaust component has common nodes.

4. The method for designing a profile of a compressor lift limiter according to claim 1, characterized in that: The process of performing fluid-solid coupling simulation calculation based on the finite element mesh model of the compressor exhaust component and obtaining the fluid-solid coupling simulation calculation result is as follows: The finite element mesh model of the compressor exhaust component is imported into a predetermined finite element simulation software, and a fluid-solid coupling simulation calculation is performed based on predetermined simulation calculation parameters to obtain a fluid-solid coupling simulation calculation result.

5. A method for designing a profile of a compressor lift limiter according to claim 4, characterized in that: The predetermined simulation calculation parameter setting objects include fluid domain and solid domain; the predetermined simulation calculation parameters include material parameter setting, boundary condition setting, dynamic mesh method setting, solution method setting and simulation time step setting of the fluid domain and the solid domain.

6. A method for designing a profile of a compressor lift limiter according to claim 5, characterized in that: The boundary condition settings include inlet boundary condition settings, outlet boundary condition settings, fixed wall boundary condition settings and fluid-solid coupling surface boundary condition settings; among them, the fixed wall boundary condition settings are specifically: setting the node displacements in the three coordinate axis directions to zero; the fluid-solid coupling surface boundary condition settings are specifically: setting the displacements in the three coordinate axis directions to IntrinsicFSI.

7. A method for designing a profile of a compressor lift limiter according to claim 4, characterized in that: The predetermined finite element simulation software adopts Fluent software.

8. A profile design system for a compressor lift limiter, characterized in that: include A three-dimensional model building module, used to build a three-dimensional model of the compressor exhaust assembly; wherein the three-dimensional model of the compressor exhaust assembly includes an upper cover model, a lift limiter model, an exhaust valve plate model and a fastener model; A finite element model building module, used for generating a finite element mesh model of the compressor exhaust component according to the three-dimensional model of the compressor exhaust component; A simulation calculation model is used to perform fluid-solid coupling simulation calculation based on a finite element mesh model of the compressor exhaust component to obtain a fluid-solid coupling simulation calculation result; A curve drawing module, used for drawing a curve showing the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time according to the fluid-solid coupling simulation calculation result; The design result output module is used to obtain the design result of the lift limiter in the compressor exhaust assembly according to the curve of the displacement deformation value of the exhaust valve plate in the compressor exhaust assembly changing with time.

9. A profile design device for a compressor lift limiter, characterized in that: include: a processor suitable for executing a computer program; A computer-readable storage medium having a computer program stored therein, wherein when the computer program is executed by the processor, the method for designing a profile of a compressor lift limiter according to any one of claims 1 to 6 is executed.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for designing a profile of a compressor lift limiter according to any one of claims 1 to 6 is implemented.

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