Evaluation method for structural strength of power generation equipment and storage medium

Abstract

The invention discloses a power generation equipment structural strength evaluation method and a storage medium, and the method comprises the steps: analyzing a mechanical structure of target power generation equipment, and building a finite element model of each structural module in the mechanical structure; determining a target working condition according to the use scene information of the target power generation equipment; based on the target working condition, a plurality of finite element models are selected, and a combined finite element model of the target power generation equipment under the target working condition is constructed according to the material attributes of the structural modules corresponding to the finite element models and the connection relation between the structural modules; and performing simulation analysis on the combined finite element model, and outputting a structural strength evaluation result of the target power generation equipment under the target working condition. The structural strength of the power generation equipment can be comprehensively evaluated, the time cost is saved, and the design and development efficiency of the power generation equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of fuel cells, and in particular to a method for evaluating the structural strength of power generation equipment and a storage medium. Background Art

[0002] The structure of the fuel cell system fixed power generation equipment is complex, with hydrogen supply modules, fuel cell modules, power and distribution modules and various auxiliary systems installed inside. The overall structural design of the fixed power generation equipment needs to ensure the mechanical safety of all module functions when they are integrated and operate normally within the effective time, so the structural strength assessment of the power generation equipment is particularly important.

[0003] At present, in the process of structural strength design of fuel cell system fixed power generation equipment, the design is often modified after problems are found. Repeated modeling and modification are required to meet the design requirements, which has low development efficiency and increases design and development costs. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a method for evaluating the structural strength of power generation equipment and a storage medium.

[0005] Specifically, the technical solution of this application is as follows:

[0006] In a first aspect, the present application provides a method for evaluating the structural strength of a power generation device, comprising:

[0007] Analyze the mechanical structure of the target power generation equipment and establish a finite element model of each structural module in the mechanical structure;

[0008] Determine a target operating condition according to the usage scenario information of the target power generation equipment; the target operating condition includes a hoisting condition, a forklift condition, a wind load condition, a snow load condition, a natural frequency analysis condition, and an earthquake time history analysis condition;

[0009] Based on the target operating condition, a plurality of the finite element models are selected and a combined finite element model of the target power generation equipment under the target operating condition is constructed according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules;

[0010] The combined finite element model is simulated and analyzed to output a structural strength assessment result of the target power generation equipment under the target working condition.

[0011] In some embodiments, the step of analyzing the mechanical structure of the target power generation equipment and establishing a finite element model of each structural module in the mechanical structure includes:

[0012] Disassembling the mechanical structure of the target power generation equipment and dividing the mechanical structure into a plurality of structural modules; the structural modules include a main frame structure, a functional module structure, a functional module support structure, and a skin structure;

[0013] Each of the structural modules is subjected to geometric processing and finite element network construction to establish a finite element model of the structural module.

[0014] In some embodiments, based on the target operating condition, selecting a plurality of the finite element models and constructing a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules, comprises:

[0015] When the target working condition is at least one of the hoisting working condition, the fork-mounted working condition, and the earthquake time history analysis working condition, selecting the finite element model of the main frame structure and the functional module structure;

[0016] According to the material properties of the main frame structure and the functional module structure and the connection relationship between the main frame structure and the functional module structure, the finite element model of the main frame structure and the finite element model of the functional module structure are combined to construct a combined finite element model of the target power generation equipment under at least one of the hoisting condition, the forklift condition, and the earthquake time history analysis condition.

[0017] In some embodiments, when the target working condition is the earthquake time history analysis working condition, the material properties of the main frame structure include Young's modulus, Poisson's ratio, density, plasticity data and material damping coefficient;

[0018] The material damping coefficient is set according to the natural frequency simulation result output by the target power generation equipment under the natural frequency analysis condition.

[0019] In some embodiments, based on the target operating condition, selecting a plurality of the finite element models and constructing a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules, comprises:

[0020] When the target working condition is the wind load working condition and / or the snow load working condition, selecting the finite element models of the main frame structure and the skin structure;

[0021] According to the material properties of the main frame structure and the skin structure and the connection relationship between the main frame structure and the skin structure, the finite element model of the main frame structure and the finite element model of the skin structure are combined to construct a combined finite element model of the target power generation equipment under the wind load condition and / or the snow load condition.

[0022] In some embodiments, based on the target operating condition, selecting a plurality of the finite element models and constructing a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules, comprises:

[0023] When the target working condition is the natural frequency analysis working condition, selecting the finite element models of the main frame structure, the functional module structure, and the functional module support structure;

[0024] According to the material properties of the main frame structure, the functional module structure, and the functional module supporting structure, as well as the connection relationship between the main frame structure, the functional module structure, and the functional module supporting structure, the finite element model of the main frame structure, the finite element model of the functional module structure, and the finite element model of the functional module supporting structure are combined to construct a combined finite element model of the target power generation equipment under the natural frequency analysis condition.

[0025] In some embodiments, the performing simulation analysis on the combined finite element model and outputting the structural strength evaluation result of the target power generation equipment under the target working condition includes:

[0026] Setting constraint conditions and boundary conditions corresponding to the target working condition;

[0027] Selecting a finite element analysis method corresponding to the target working condition, performing simulation calculation on the combined finite element model according to the constraint conditions and the boundary conditions, and outputting simulation results;

[0028] The simulation results are verified, and the structural strength assessment results of the target power generation equipment under the target working conditions are output.

[0029] In some embodiments, the finite element analysis method corresponding to the target working condition is selected, and according to the constraint condition and the boundary condition, the combined finite element model is simulated and calculated and the simulation result is output, including:

[0030] When the target working condition is the earthquake time history analysis working condition, an implicit dynamic analysis method is selected to solve the combined finite element model according to the constraint conditions and the boundary conditions to obtain at least one output variable of the displacement variable, the support reaction force variable, and the stress variable of the combined finite element model;

[0031] Calculating the seismic sinusoidal beat wave curve of the combined finite element model according to the natural frequency simulation result output by the target power generation equipment under the natural frequency analysis condition;

[0032] The output variable and the seismic sinusoidal beat wave curve constitute the simulation result of the combined finite element model.

[0033] In some embodiments, after verifying the simulation results and outputting the structural strength evaluation results of the target power generation equipment under the target working conditions, the method further includes:

[0034] If the structural strength evaluation result does not meet the structural strength requirement of the target power generation equipment, the finite element model is adjusted according to the structural strength evaluation result.

[0035] In a second aspect, the present application further provides a storage medium, wherein at least one instruction is stored in the storage medium, and the instruction is loaded and executed by a processor to implement the operations performed by any of the above-mentioned methods for evaluating the structural strength of power generation equipment.

[0036] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0037] (1) This application analyzes the mechanical structure of the power generation equipment and establishes finite element models corresponding to each structural module of the power generation equipment. When performing structural strength assessment, specific finite element models are selected and combined according to different assessment requirements. Compared with traditional assessment methods, this application can provide a more comprehensive structural strength assessment solution.

[0038] (2) The present application can adjust the structural design of the power generation equipment according to the structural strength assessment results. There is no need for repeated modeling when adjusting the design. On the one hand, it can shorten the development time. On the other hand, it can avoid repeated modeling and save development resources, which is conducive to improving the development and design efficiency of fuel cell fixed power generation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present application.

[0040] Figure 1 This is a flow chart of the method for evaluating the structural strength of power generation equipment in the embodiment of the present application.

[0041] Figure 2 is another flow chart of the method for evaluating the structural strength of power generation equipment in an embodiment of the present application;

[0042] Figure 3 It is a schematic diagram of the structure of a device for evaluating the structural strength of power generation equipment in an embodiment of the present application.

[0043] Description of Figure Numbers:

[0044] Establish module 100, determine module 200, select module 300, and simulate module 400. DETAILED DESCRIPTION

[0045] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0047] In order to simplify the drawings, only the parts related to the application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0048] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0049] At present, fuel cell stationary power generation equipment is widely used in industrial and commercial fields. It is equipped with structural modules such as hydrogen supply module, fuel cell module, power and distribution module and various auxiliary systems. In order to ensure the mechanical safety of fixed power generation equipment during normal operation, the structural strength of the power generation equipment needs to be evaluated before the equipment is put into use.

[0050] Since fixed power generation equipment is large in size and has a complex overall structure, in the existing structural design process, the power generation equipment is generally split into different parts, and the design engineers design these split parts independently, and the designs of each part are carried out simultaneously. After the design is completed, all parts are integrated together to complete the overall structural design of the power generation equipment.

[0051] Since different structural modules may have different problems, in the traditional evaluation process, only a single structural module can be evaluated. When modeling, the modeling will be focused on the evaluation requirements of the module. If other structural modules are to be evaluated, different models need to be established, which not only takes a lot of time, but repeated modeling will also lead to increased development costs and reduce design and development efficiency.

[0052] Based on this, an embodiment of the present application provides a method for evaluating the structural strength of power generation equipment, which can establish a combination model of power generation equipment according to different operating conditions, provide a more comprehensive structural strength evaluation solution, improve the development and design efficiency of fuel cell fixed power generation equipment, and further reduce design and development costs.

[0053] The following is a description of the drawings. Figure 1 As shown, an embodiment of the present application, a method for evaluating the structural strength of a power generation device, comprises the steps of:

[0054] S101 analyzes the mechanical structure of the target power generation equipment and establishes a finite element model of each structural module in the mechanical structure.

[0055] Specifically, in the structural design process of power generation equipment, the design is usually divided into different structural modules. For example, the main frame of the power generation equipment is designed by a group of designers, and the supporting module is designed by another group of designers. The design requirements of each structural module are different. When conducting structural strength assessment, different structural modules need to be evaluated for different contents. In order to improve the design and development efficiency, in this embodiment, a finite element model of each structural module is first established. In subsequent steps, the models can be combined according to the assessment requirements under different working conditions to achieve the purpose of comprehensive assessment.

[0056] S102 determines a target operating condition according to usage scenario information of the target power generation equipment.

[0057] Specifically, when receiving a design task, the design engineer will design it according to the environment in which the power generation equipment will be put into use. In different use environments, the power generation equipment faces different working conditions. Assuming that the target power generation equipment is to be put into use in an earthquake-prone area, first of all, the equipment may need to be transported by hoisting, so it will experience hoisting conditions. In the case of hoisting, there will be strength requirements for the hoisting point and its surrounding areas (such as hoisting bolts). In addition, the seismic performance of the power generation equipment under earthquake conditions needs to be considered. Therefore, in this embodiment, by analyzing the use scenario information of the target power generation equipment, the target working conditions can be determined, including hoisting conditions, fork-mounted conditions, wind load conditions, snow load conditions, natural frequency analysis conditions, and earthquake time history analysis conditions. These conditions can basically cover the basic use scenarios of fixed equipment. When other use environments appear, the specific use scenario information can be analyzed to determine the corresponding target conditions.

[0058] The usage scenario information includes the environmental conditions of the area where the power generation equipment is put into use, such as the natural climate, geographical environment, frequent weather conditions, etc. In some implementations, designers can determine the target operating conditions based on their own experience, or they can use a special database to query the usage scenario information in the database to obtain the corresponding target operating conditions.

[0059] S103 selects several finite element models based on the target operating condition and constructs a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules.

[0060] Specifically, different structural modules are connected in different ways. For example, the main frame may need to be connected to other functional modules by bolts, and different connection surfaces may need to be connected by welding, etc. In addition, the material properties of different structural modules (Young's modulus, Poisson's ratio, density, plasticity data and other parameters) are also different.

[0061] When combining models, it is necessary to consider the influence of material properties and connection relationships at the same time to build a reasonable combined finite element model. In this embodiment, the combined finite element model is established for the target working condition determined in step S102. Different finite element models can be selected for combination under different target working conditions, so that the generated combined model can meet the structural strength assessment requirements of different working conditions.

[0062] S104 performs simulation analysis on the combined finite element model and outputs a structural strength assessment result of the target power generation equipment under the target working condition.

[0063] In this embodiment, the finite element analysis method is combined with the use scenario of fixed power generation equipment. Taking into account the structural complexity of the power generation equipment, in order to facilitate a comprehensive analysis of the strength of the overall structure, a finite element model of each structural module of the power generation equipment is first established. Then, the target operating conditions are determined by using the scenario, and a combined finite element model is constructed in combination with the material properties and connection relationships of each structural module. Through simulation analysis, the structural strength assessment result is output.

[0064] An embodiment of the present application, such as Figure 2 As shown, a method for evaluating the structural strength of a power generation device comprises the following steps:

[0065] S201 determines a target operating condition according to usage scenario information of a target power generation equipment.

[0066] S202 disassembles the mechanical structure of the target power generation equipment and divides the mechanical structure into a number of structural modules; the structural modules include a main frame structure, a functional module structure, a functional module support structure, and a skin structure.

[0067] Specifically, the mechanical structure of the fixed power generation equipment is disassembled and divided into several structural modules, mainly including the main frame structure, functional module structure (power module, hydrogen supply module, etc.), functional module support structure, skin structure, etc. In addition, accessory systems such as wiring harnesses and pipelines can be appropriately distributed on the support structure as additional mass.

[0068] S203 performs geometric processing and finite element network construction on each structural module to establish a finite element model of the structural module.

[0069] Specifically, after classification, each structural module is geometrically processed to establish a three-dimensional model of each structural module. The main frame structure and the functional module support structure are mainly solid units, the functional module structure is replaced by mass blocks or mass points, and the skin structure is mainly shell units. Then, finite element meshes are constructed to form several finite element models. In this embodiment, the following four finite element models are taken as examples for description:

[0070] Model A: Equipment main frame structure model;

[0071] Model B: Functional module support structure model;

[0072] C model: the model after each functional module is processed by mass blocks or mass points;

[0073] D model: skin structure model.

[0074] S204 selects several finite element models based on the target operating condition and constructs a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules.

[0075] Specifically, under the conditions of hoisting, forklift and earthquake time history analysis, model A and model C are selected to construct a combined finite element model; the wind & snow load analysis mainly examines the structural strength of each surface of the equipment under pressure, so under wind load or snow load conditions, model A and model D are selected for combination; under the natural frequency analysis condition, model A, model B and model C are selected for combination.

[0076] Different models correspond to different structural modules, and the connection relationships between different structural modules are also different. Specifically, the combination of models is set according to the structural design of the target power generation equipment. For example, the connection between bolt holes is set to the unified degree of freedom of the connected bolt holes, the welding parts are set to the connection surfaces of the binding structure, and so on.

[0077] The material properties are set according to the design requirements of each structural module, including but not limited to Young's modulus, Poisson's ratio, density, and plasticity data. It should be noted that in the earthquake time history analysis, the material setting of model A needs to be added with the material damping coefficient. The material damping coefficient is set according to the natural frequency simulation results output by the target power generation equipment under the natural frequency analysis condition. The specific setting method is as follows:

[0078] Assuming that the damping matrix satisfies the orthogonality condition, let the damping matrix be a linear combination of the mass matrix and the stiffness matrix:

[0079] C = αM + βK;

[0080] Among them, the damping coefficient α of the mass matrix M is set to 0, the relationship between the damping coefficient β of the stiffness matrix K and the modal damping ratio is β = (2ξi) / ωi, the modal damping ratio ξi = 0.03, ωi = 2πfi, fi is the natural frequency simulation result.

[0081] S205 sets the constraint conditions and boundary conditions corresponding to the target working condition.

[0082] Specifically, the constraints and boundary conditions set for different target working conditions are as follows:

[0083] (1) Hoisting conditions: constrain the degrees of freedom of 1 to 6 at the position of the hoisting bolt holes; set a vertical force twice the overall gravity of the equipment at the bottom of the equipment as the boundary condition of the force.

[0084] (2) Wind / snow load condition: constrain the degrees of freedom 1 to 6 at the locations of the fixing bolt holes on the bottom surface of the equipment; set the wind pressure or snow pressure that needs to be considered in the design on the five external surfaces of the equipment (excluding the bottom surface) to be used as the boundary conditions of the force.

[0085] (3) Natural frequency analysis conditions: Constrain the degrees of freedom 1 to 6 at the locations of the fixing bolt holes on the bottom surface of the equipment; the weight and stiffness distribution of all structures are consistent with the original design requirements and are used as force boundary conditions.

[0086] (4) Earthquake time-history analysis conditions: Constrain the degrees of freedom 1 to 6 at the locations of the fixing bolt holes on the bottom surface of the equipment; the weight and stiffness distribution of all structures are consistent with the original design requirements and are used as force boundary conditions.

[0087] S206 selects a finite element analysis method corresponding to the target working condition, performs simulation calculation on the combined finite element model according to the constraint conditions and boundary conditions, and outputs the simulation results.

[0088] Specifically, the hoisting / forklift working condition can adopt the static analysis method to solve the combined finite element model constructed by the A model and the C model according to the set constraints and boundary conditions, and output the stress, support reaction force and deformation parameters of the combined finite element model under the hoisting / forklift working condition.

[0089] For wind / snow load conditions, the static analysis method is used to solve the combined finite element model constructed by model A and model D according to the set constraints and boundary conditions, and the stress, support reaction force and deformation parameters of the combined finite element model under wind / snow load conditions are output.

[0090] The natural frequency analysis condition adopts the analysis method of natural frequency extraction, solves the combined finite element model constructed by model A, model B, and model C according to the set constraints and boundary conditions, and outputs the natural frequency simulation results of the combined finite element model under the natural frequency analysis condition.

[0091] The earthquake time history analysis adopts the implicit dynamic analysis method. According to the set constraints and boundary conditions, the combined finite element model constructed by the A model and the C model is solved, and the displacement, support reaction force, stress, etc. of the model under the earthquake time history analysis condition are output. In addition, in the earthquake time history analysis condition, it is also necessary to output the earthquake sinusoidal beat wave curve to evaluate the seismic resistance of the target power generation equipment.

[0092] The sine beat wave curve for earthquake time history analysis requires the natural frequency simulation result output by the equipment natural frequency analysis condition as the key variable. The rest refers to the standard YD5083 or GB50260. The calculation process of the sine beat wave curve for earthquake time history analysis is as follows:

[0093] a H =0.75a0(GB50260) / a H =k1×k2×a0(YD5083);

[0094] Where: a Hrepresents the horizontal input waveform acceleration (g); a0 represents the ground acceleration value corresponding to the earthquake intensity to be adopted in the design (g); k1 represents the equipment importance coefficient; k2 represents the equipment acceleration magnification factor.

[0095] The specific value is determined by the value tables in the reference standard. The vertical acceleration is generally taken as 65% of the horizontal acceleration.

[0096]

[0097] Where: a represents the horizontal acceleration of each time period (g); f represents the natural frequency of the equipment (Hz);

[0098] This is a 1-beat waveform, with a total of 5 beats, and the interval between each beat is T p (s), requirements To ensure that the device response motion does not produce superposition, where ζ is the critical damping of the device's natural frequency.

[0099] The above analysis methods are commonly used analysis methods under corresponding working conditions. Other methods can also be used for analysis in the actual simulation analysis process. For example, both static analysis methods and dynamic analysis methods can be used under hoisting conditions.

[0100] S207 verifies the simulation results and outputs the structural strength assessment results of the target power generation equipment under the target working conditions.

[0101] Specifically, after the simulation is completed, the simulation results are checked according to relevant design specifications and standards. Different working conditions have different corresponding check contents (check indicators):

[0102] (1) Equipment main frame hoisting (fork-mounted) load-bearing performance verification: The output frame is considered qualified if the equivalent stress is less than the material yield strength or tensile strength.

[0103] (2) Load-bearing performance of module support structure during hoisting (fork loading): The output frame is deemed qualified if the equivalent stress is less than the yield strength or tensile strength of the material.

[0104] (3) Evaluation of the anti-slip ability of lifting bolts (if there is no lifting condition, this result output can be cancelled): The ratio of the minimum clamping force generated by the bolt specifications specified in the design to the actual required clamping force at the output bolt installation point is greater than 1.1, which is considered qualified.

[0105] (4) Equipment wind and snow resistance: The output frame equivalent stress is less than the material yield strength or tensile strength and is considered qualified.

[0106] (5) Equipment static load anti-slip capacity assessment: The ratio of the minimum clamping force generated by the bolt specifications specified in the design to the actual required clamping force at the output bolt installation point is greater than 1.1, which is considered qualified.

[0107] (6) Equipment natural frequency output: mainly includes the natural frequency of the equipment main frame and the functional module support structure, and the seismic time history analysis sinusoidal beat wave curve is output through the natural frequency value.

[0108] (7) Earthquake resistance performance evaluation: Select the maximum displacement amplitude of the top of the equipment within the set earthquake wave duration, as long as it meets certain requirements.

[0109] (8) Equipment dynamic load anti-slip capacity assessment: The ratio of the minimum clamping force generated by the bolt specifications specified in the design to the actual required clamping force at the output bolt installation point is greater than 1.1, which is considered qualified.

[0110] Through verification, it is determined whether the above results meet the requirements. For simulation results that do not meet the requirements, the finite element model corresponding to the simulation results needs to be adjusted according to the structural strength assessment results. When adjusting, optimization adjustments can be made directly based on the existing model according to the simulation results; the structural design of the power generation equipment can also be modified according to the simulation results, and the above four models can be re-established based on the modified power generation equipment.

[0111] In addition, the present application also provides a storage medium, characterized in that at least one instruction is stored in the storage medium, and the instruction is loaded and executed by the processor to implement the operation performed by any of the above-mentioned power generation equipment structural strength evaluation method embodiments. For example, the storage medium can be a read-only memory (ROM), a random access memory (RAM), a read-only compact disk (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device.

[0112] Based on the same technical concept, the present application also provides a device for evaluating the structural strength of a power generation device, such as Figure 3 As shown, it includes an establishment module 100, a determination module 200, a selection module 300, and a simulation module 400, wherein:

[0113] Establishing module 100, for analyzing the mechanical structure of the target power generation equipment and establishing a finite element model of each structural module in the mechanical structure;

[0114] A determination module 200, configured to determine a target operating condition according to usage scenario information of a target power generation equipment;

[0115] A selection module 300 is used to select a number of finite element models based on the target operating condition and construct a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules;

[0116] The simulation module 400 is used to perform simulation analysis on the combined finite element model according to the target operating condition, and output the structural strength evaluation result of the target power generation equipment under the target operating condition.

[0117] In one embodiment, the establishment module 100 includes:

[0118] A disassembly unit is used to disassemble the mechanical structure of the target power generation equipment and divide the mechanical structure into several structural modules; the structural modules include a main frame structure, a functional module structure, a functional module support structure, and a skin structure;

[0119] Establish units for geometric processing and finite element network construction of each structural module, and establish finite element models of the structural modules.

[0120] In one embodiment, the simulation module 400 includes:

[0121] A setting unit, used to set constraint conditions and boundary conditions corresponding to the target working condition;

[0122] A calculation unit is used to select a finite element analysis method corresponding to a target working condition, perform simulation calculations on a combined finite element model according to constraints and boundary conditions, and output simulation results;

[0123] The verification unit is used to verify the simulation results and output the structural strength assessment results of the target power generation equipment under the target working conditions.

[0124] In one embodiment, based on any of the above device embodiments, it further includes: an adjustment module, which is used to adjust the finite element model according to the simulation result if the structural strength assessment result does not meet the structural strength requirement of the target power generation equipment.

[0125] Furthermore, the present application also provides a processor, comprising any of the aforementioned devices for evaluating the structural strength of power generation equipment.

[0126] It should be noted that the embodiment of the evaluation device for the structural strength of power generation equipment provided in this application and the embodiment of the evaluation method for the structural strength of power generation equipment provided above are based on the same inventive concept and can achieve the same technical effect. Therefore, other specific contents of the embodiment of the evaluation device for the structural strength of power generation equipment can refer to the contents of the embodiment of the evaluation method for the structural strength of power generation equipment provided above.

[0127] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed with hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0128] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A method for evaluating the structural strength of power generation equipment, characterized in that: include: Analyze the mechanical structure of the target power generation equipment and establish a finite element model of each structural module in the mechanical mechanism; Determine a target operating condition according to the usage scenario information of the target power generation equipment; the target operating condition includes a hoisting condition, a forklift condition, a wind load condition, a snow load condition, a natural frequency analysis condition, and an earthquake time history analysis condition; Based on the target operating condition, a plurality of the finite element models are selected and a combined finite element model of the target power generation equipment under the target operating condition is constructed according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules; The combined finite element model is simulated and analyzed to output a structural strength assessment result of the target power generation equipment under the target working condition.

2. A method for evaluating the structural strength of power generation equipment according to claim 1, characterized in that: The analysis of the mechanical structure of the target power generation equipment and establishment of a finite element model of each structural module in the mechanical structure include: Disassembling the mechanical structure of the target power generation equipment and dividing the mechanical structure into a plurality of structural modules; the structural modules include a main frame structure, a functional module structure, a functional module support structure, and a skin structure; Each of the structural modules is subjected to geometric processing and finite element network construction to establish a finite element model of the structural module.

3. A method for evaluating the structural strength of power generation equipment according to claim 2, characterized in that: The method of selecting a plurality of the finite element models based on the target operating condition and constructing a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules comprises: When the target working condition is at least one of the hoisting working condition, the fork-mounted working condition, and the earthquake time history analysis working condition, selecting the finite element model of the main frame structure and the functional module structure; According to the material properties of the main frame structure and the functional module structure and the connection relationship between the main frame structure and the functional module structure, the finite element model of the main frame structure and the finite element model of the functional module structure are combined to construct a combined finite element model of the target power generation equipment under at least one of the hoisting condition, the forklift condition, and the earthquake time history analysis condition.

4. A method for evaluating the structural strength of power generation equipment according to claim 3, characterized in that: When the target working condition is the earthquake time history analysis working condition, the material properties of the main frame structure include Young's modulus, Poisson's ratio, density, plasticity data and material damping coefficient; The material damping coefficient is set according to the natural frequency simulation result output by the target power generation equipment under the natural frequency analysis condition.

5. A method for evaluating the structural strength of power generation equipment according to claim 2, characterized in that: The method of selecting a plurality of the finite element models based on the target operating condition and constructing a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules comprises: When the target working condition is the wind load working condition and / or the snow load working condition, selecting the finite element models of the main frame structure and the skin structure; According to the material properties of the main frame structure and the skin structure and the connection relationship between the main frame structure and the skin structure, the finite element model of the main frame structure and the finite element model of the skin structure are combined to construct a combined finite element model of the target power generation equipment under the wind load condition and / or the snow load condition.

6. A method for evaluating the structural strength of power generation equipment according to claim 2, characterized in that: The method of selecting a plurality of the finite element models based on the target operating condition and constructing a combined finite element model of the target power generation equipment under the target operating condition according to the material properties of the structural modules corresponding to the finite element models and the connection relationship between the structural modules comprises: When the target working condition is the natural frequency analysis working condition, selecting the finite element models of the main frame structure, the functional module structure, and the functional module support structure; According to the material properties of the main frame structure, the functional module structure, and the functional module supporting structure, as well as the connection relationship between the main frame structure, the functional module structure, and the functional module supporting structure, the finite element model of the main frame structure, the finite element model of the functional module structure, and the finite element model of the functional module supporting structure are combined to construct a combined finite element model of the target power generation equipment under the natural frequency analysis condition.

7. A method for evaluating the structural strength of power generation equipment according to claim 1, characterized in that: The performing simulation analysis on the combined finite element model and outputting the structural strength evaluation result of the target power generation equipment under the target working condition includes: Setting constraint conditions and boundary conditions corresponding to the target working condition; Selecting a finite element analysis method corresponding to the target working condition, performing simulation calculation on the combined finite element model according to the constraint conditions and the boundary conditions, and outputting simulation results; The simulation results are verified, and the structural strength assessment results of the target power generation equipment under the target working conditions are output.

8. A method for evaluating the structural strength of power generation equipment according to claim 7, characterized in that: The finite element analysis method corresponding to the target working condition is selected, and according to the constraint condition and the boundary condition, the combined finite element model is simulated and calculated and the simulation result is output, including: When the target working condition is the earthquake time history analysis working condition, an implicit dynamic analysis method is selected to solve the combined finite element model according to the constraint conditions and the boundary conditions to obtain at least one output variable of the displacement variable, the support reaction force variable, and the stress variable of the combined finite element model; According to the natural frequency simulation results output by the target power generation equipment under the natural frequency analysis condition, the seismic sinusoidal beat wave curve of the combined finite element model is calculated. The output variable and the seismic sinusoidal beat wave curve constitute the simulation result of the combined finite element model.

9. A method for evaluating the structural strength of power generation equipment according to claim 7, characterized in that: After verifying the simulation results and outputting the structural strength evaluation results of the target power generation equipment under the target working conditions, the method further includes: If the structural strength evaluation result does not meet the structural strength requirement of the target power generation equipment, the finite element model is adjusted according to the structural strength evaluation result.

10. A storage medium, characterized in that: The storage medium stores at least one instruction, which is loaded and executed by the processor to implement the operations performed by the method for evaluating the structural strength of power generation equipment according to any one of claims 1 to 9.

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