CN112329307B - Intelligent calculation module and method of denitration reactor structure intelligent design system - Google Patents
Intelligent calculation module and method of denitration reactor structure intelligent design system Download PDFInfo
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Abstract
The invention provides an intelligent computing module and a method of an intelligent design system of a denitration reactor structure, wherein a core module of the intelligent optimization design system of the denitration reactor structure is an intelligent computing module which comprises a pretreatment packaging series template and an iterative optimization computing linkage adjusting module; the intelligent modeling, intelligent post-processing and intelligent drawing module information interconnection and intercommunication of the intelligent computing module and the denitration reactor structure intelligent design system can be used for intelligently and iteratively optimizing a final better structure model at a computer background. Through the intelligent calculation module, a large amount of engineering quantities such as various data preprocessing, each structural model adjustment calculation and the like in the structural calculation process are saved, the N models can be calculated and contrastively analyzed and optimized at one time, errors which easily occur in the conventional calculation process are avoided, the design efficiency is greatly improved, and the safety and the economical efficiency of the structure are improved.
Description
Technical Field
The invention relates to an intelligent calculation module and an intelligent calculation method in an intelligent design system of a denitration reactor structure, wherein the module and the method are widely applied to intelligent calculation methods of denitration reactor structures in industries such as electric power, steel, chemical engineering and the like, and are particularly applied to intelligent calculation of the denitration reactor structures in the electric power environmental protection industry.
Background
The SCR (selective catalytic reduction) method is a flue gas denitration technology which is most applied and mature internationally. In the technology, the reactor is the core component of the SCR device and is used for providing NOx and NH in flue gas3Formation of N on the surface of the catalyst2And H2The main function of the O place is to support the catalyst, so that a space is provided for the denitration reaction, the smooth flowing of the flue gas and the uniform distribution of the air flow are ensured, and conditions are created for the smooth proceeding of the denitration reaction.
The development time of the denitration project of the coal-fired power plant is short, domestic and foreign environmental protection companies have characteristics on the technical modes of the denitration reactor, and through a great deal of research, the invention integrates the reactor modes into three design modes of a self-supporting type (including four-leg and multi-leg modes), a suspension type (including a reactor inlet suspension mode, a reactor middle suspension mode, a corresponding single-leg and multi-leg mode and the like) and a suspension type according to the support form.
The denitration reactor is generally divided into three parts of a body part, an inlet flue part and an outlet flue part according to the arrangement form. In the denitration reactor structure, the structural members mainly comprise reactor wall plates, stiffening ribs, catalyst supporting beams, inner supporting rods, supports and other members, and the structural stress mainly comprises internal pressure, accumulated dust, wind load, snow load, earthquake load, temperature load, catalyst load and other structural loads. The structural design of the denitration reactor does not have special standard regulations, and designers usually refer to the technical specification of flue gas and coal dust pipeline design of a thermal power plant, the design and calculation method matched with the technical specification of flue gas and coal dust pipeline design of the thermal power plant, the design standards of pressure vessels, the design standards of steel structures and other relevant standard regulations in the structural design.
In the structural design of the denitration reactor, a lot of designers adopt large-scale finite element calculation software such as MIDAS, STAAD.PRO, ANSYS, SAP2000, ABAQUS and the like to carry out structural design and calculation work of the denitration reactor. The denitration reactor structure is modeled and structurally analyzed by adopting large finite element calculation software, so that the denitration reactor structure can be integrally analyzed, the modeling model is three-dimensional in image during the structural design of the denitration reactor, and the economy and the safety of the denitration reactor structure are greatly improved. However, when the denitration reactor structure is calculated by using large finite element calculation software, the design is only mastered by part of designers in view of the complex structural components of the denitration reactor and the complex operation of the large finite element software, the structural modeling calculation of the structural design method is complex, and the design efficiency needs to be improved.
The denitration reactor is designed integrally, and the prior art mainly has the following problems:
1. no special finite element structure design software of the denitration reactor exists;
2. the structural design of the denitration reactor has no clear standard rule design basis;
3. the mechanical property index of the material of the denitration reactor structure under the action of high temperature cannot be automatically calculated according to the temperature and steel information, and the material needs manual calculation and then is manually input;
4. the correlation between the allowable stress method calculation and the extreme state method calculation of the denitration reactor is lack of research;
5. the large-scale finite element structure calculation can only aim at one structural model, and the denitration reactor structure often needs the designer to adjust the model continuously and manually to carry out the next structural calculation when the denitration reactor structure is calculated conventionally, and the process is more complicated. The automatic background automatic linkage of the computer can not be carried out by the structural calculation and the structural model adjustment;
6. during each structure calculation, a user needs to set relevant calculated design parameters, such as component connection information, grid division, load combination and other managed calculation pre-processing information, by the designer, and the setting is complicated and is easy to set unreasonably, so that a final calculation result is affected.
The problems are the problems commonly existing when the conventional denitration reactor structure adopts finite element calculation at present, and the problems are calculated by adopting large finite element software, so that a large amount of calculation pretreatment work is required by a user during the structure calculation, the pretreatment work has openness, can be set according to the experience and understanding of a designer, is convenient for manual intervention, increases the workload of the designer, and brings safety and economic risks for the structure calculation.
Disclosure of Invention
According to the defects existing in the prior art, the invention develops an intelligent calculation module in an intelligent optimization design system of the denitration reactor structure and develops a related intelligent calculation method according to the characteristic that the denitration reactor structure has a certain structural shape.
An intelligent computing module of denitration reactor structure intelligence optimal design system, it includes:
the intelligent computing module is a core module of the denitration reactor structure intelligent optimization design system and comprises a pretreatment packaging series template and an iterative optimization computing linkage adjusting module;
the intelligent modeling, intelligent post-processing and intelligent drawing module information interconnection and intercommunication of the intelligent computing module and the denitration reactor structure intelligent optimization design system can be used for intelligently and iteratively optimizing a final better structure model at a computer background.
Preferably, the pretreatment packaging series template comprises intelligent calculation of material mechanical properties, a member optimization section library, load combination algorithm conversion and design parameter template solidification;
the iterative optimization calculation linkage adjustment comprises system selection, structural model calculation, stress ratio member section adjustment, displacement member section adjustment and frequency member section adjustment.
Preferably, the intelligent calculation of the mechanical properties of the materials in the intelligent calculation module comprises automatic safety coefficient calculation and allowable stress automatic calculation of steel according to the design temperature;
the load combination algorithm conversion comprises allowable stress method design, limit state method design and mutual conversion;
the component optimization section library comprises a transverse reinforcing rib section library, a vertical reinforcing rib section library and a structural component library of internal support rods.
Preferably, the denitration reactor structural system comprises a structural system with transverse stiffening ribs as main parts, a structural system with vertical stiffening ribs as main parts and a structural system with transverse and vertical stiffening ribs as cooperation parts.
An intelligent optimization design method for a denitration reactor structure comprises the step that an intelligent calculation module completes iterative optimization calculation linkage adjustment of a structural model through structural system selection, structural model calculation, stress ratio calculation adjustment, displacement calculation component adjustment and frequency calculation component adjustment.
Preferably, during iterative optimization calculation, stress ratio calculation adjustment, displacement calculation component adjustment and frequency calculation component adjustment are compared with safety indexes and economic indexes in the intelligent modeling module according to calculation results, a component section library and the intelligent modeling module are continuously called to adjust the section model of the structural component to perform iterative optimization calculation, and an iterative optimization calculation loop is formed.
Preferably, the human-computer model modification menu is a functional platform of original large finite element software of the whole system, and the intelligent computing module is an open module.
Preferably, the intelligent computing module has the functions of memory and automatic learning, can form a new structural computing pretreatment series template through different engineering examples, enriches the content of a section library, and can improve the efficiency during intelligent computing.
For further explanation of the above-mentioned denitration reactor structure intelligent optimization design system and method, the following specific description is also provided:
according to a great deal of design experience, the structural type of the denitration reactor is relatively fixed, the pre-processing parameter setting for the structural calculation of the denitration reactor is basically similar, according to the characteristics of the structure of the denitration reactor, in the intelligent computing module, the invention carries out serial encapsulation on the pretreatment work before the structure of the conventional denitration reactor is computed, and the structure calculation, the structure modeling and the structure post-processing are linked, so that the structure calculation function without manual intervention is realized, and the intelligent computing module can also be linked with the intelligent modeling module and the subsequent intelligent post-processing module according to the computing result, compare the computing result of the structural model with the safety index and the economic index in the intelligent module, and comparing the unsatisfied automatic adjustment structure models, calculating again, and comparing again to form an iterative loop until the structure calculation result meets the safety index and the economic index.
The intelligent computing module integrally comprises two parts of computing pretreatment packaging and iterative optimization computing linkage adjustment, wherein the pretreatment packaging mainly comprises four parts of material mechanical property computing, member optimization section library construction, load combination and design parameters. The iterative optimization calculation comprises five parts of system selection, structural model calculation, stress ratio member section adjustment, displacement member section adjustment and frequency member section adjustment, wherein the stress ratio member section adjustment, the displacement member section adjustment and the frequency member section adjustment form an iterative calculation cycle, an optimal structural model which meets both safety requirements and economic requirements through the three parts is fixed as an intermediate structural model result, the cycle is carried out again after the first intermediate structural model is fixed, the intelligent calculation module automatically selects another structural system to carry out initial structural model calculation, secondary iterative optimization calculation is carried out according to the stress ratio member section adjustment, the displacement member section adjustment and the frequency member section adjustment to form an intermediate structural model result of the next structural system, and finally, the comparison is carried out according to the economic indexes of the intermediate structural model results of the two systems, and selecting the intermediate structure model with the optimal economic index as a final structure model.
The steel used by the denitration reactor structure is basically Q235B and Q345B, the working temperature of the denitration reactor structure is basically 300-450 degrees, in the pretreatment packaging process, the mechanical properties of the materials of the two steel types of Q235B and Q345B at different temperatures are summarized according to corresponding specifications, and a steel mechanical property calculation formula in the range of 0-450 degrees is embedded in the denitration reactor structure, so that the intelligent calculation module can automatically calculate various stress values of the denitration reactor structure. When the working design temperature of the structure is input and the type of the steel is selected, the indexes of the steel, such as elastic modulus, damping ratio, shear modulus, allowable stress, yield strength, shear strength, tensile strength, end surface bearing strength and the like, can be automatically calculated, and the mechanical property parameters of the materials are automatically given to the structural member for structural calculation.
The denitration reactor is mainly formed by components such as a reactor pipeline wall plate, a bottom layer peripheral beam section, a middle layer peripheral beam section, a top layer peripheral beam section, a catalyst support beam section, a rectifying device beam section, a pipeline body vertical column section, a body wall plate stiffening rib section, an inlet flue transverse stiffening rib section, an inlet flue vertical stiffening rib section, an inlet flue inner support rod section, an inlet flue wall plate stiffening rib section, an outlet flue transverse stiffening rib section, an outlet flue vertical stiffening rib section, an outlet flue inner support rod section, an outlet flue wall plate stiffening rib section and the like, the pipeline wall plate is basically made of 4-6 mm structural plates, the transverse stiffening ribs and the vertical stiffening ribs are basically made of H-shaped steel, I-shaped steel or channel steel, the stiffening ribs are in the form of angle steel, and the inner support rods are basically made of round tubes. In the construction of the component section library, the section library is provided with a structural component library of transverse and vertical reinforcing ribs and inner support rods, the transverse and vertical reinforcing ribs are provided with all finished product types of H-shaped steel, I-shaped steel and channel steel in the component section library, and the inner support rods are provided with all finished product steel pipe component section types in the component section library. The component section library in the intelligent computing module supports the input of user sections, and corresponding section information is automatically recorded into the section library every time the user sections are input.
When the structure of the denitration reactor is calculated, a calculation method adopted by technical specifications such as a flue gas, wind and coal dust pipeline design technical specification of a thermal power plant is an allowable stress method, in large finite element calculation software, a system default method is a limit state design method, mechanical property indexes of materials adopted between the two methods are different, adopted load subentry coefficients and combination coefficients are different, adopted safety coefficients are also different, and when a plurality of users calculate the structure of the denitration reactor, conversion of the mechanical property indexes between calculation of the allowable stress method and calculation of the limit state method and conversion between calculation formulas are different in understanding, so that the understanding greatly influences the result of structure calculation. According to a large number of research and engineering examples, in an intelligent computing module, the method converts an allowable stress method and a limit state method, not only determines the relative mechanical property values of the steel material such as allowable stress, yield strength, tensile strength, shear strength, elastic modulus and the like at different temperatures, but also converts the allowable stress method and the limit state method by adjusting methods such as a safety coefficient, a subentry coefficient, a combination coefficient, a load combination formula and the like.
In steel structure design, before structure calculation, designers are often required to manually select and adjust some preprocessing data such as some design parameters. In the denitration reactor structure calculation, in view of the relative fixity of the denitration reactor structure, the design parameters are solidified in the intelligent calculation module according to the seismic information to form a relatively fixed design parameter template, and after the engineering seismic information is selected by a user in the intelligent modeling module, the intelligent calculation module is automatically matched with the relevant design parameters to carry out the corresponding structure calculation.
The intelligent calculation module iterative optimization calculation linkage adjustment part mainly comprises five parts, namely system selection, preliminary structure model calculation, stress ratio member section adjustment, displacement member section adjustment and frequency member section adjustment, wherein the system selection comprises a structural system mainly comprising transverse and vertical reinforcing ribs and a structural system mainly comprising vertical reinforcing ribs. After the intelligent modeling module forms a preliminary structural model of the denitration reactor, a structural system mainly comprising transverse and vertical reinforcing ribs is also selected as a first choice for the preliminary structural model, structural calculation is carried out by the intelligent calculation module according to the preliminary structural model of the structural system to form post-processing contents (model safety and economic calculation results) of a first calculation result, after the first calculation is completed, the intelligent calculation module calls the intelligent post-processing calculation result, firstly, the stress ratio of each component of the structure is contrastively analyzed with the safety index in the intelligent modeling module, the section specification of the component with larger stress and exceeding the safety index is adjusted upwards, the section specification of the component with smaller stress and larger stress tolerance is adjusted downwards, and the contents in an intelligent modification information menu in the intelligent modeling module are automatically modified during adjustment. After the section of the structural member is adjusted for the first time, the intelligent calculation module carries out secondary calculation according to the modified intelligent modeling module structural model to form a new member safety and economic post-processing result, and carries out secondary adjustment on structural model members which do not meet the requirement of stress ratio safety indexes, and the steps are repeated to form a structural model of which the stress ratio indexes of the structural model of the denitration reactor accord with the safety indexes. And after the safety index of the structural stress ratio index meets the requirement, carrying out structural displacement safety index comparison, model adjustment and structural calculation, and adjusting the structural stress ratio index. The displacement indexes comprise the contents of integral displacement of the denitration reactor, displacement of the wall plate of the channel body, displacement of the catalyst supporting beam, displacement of the stiffening rib and the like. And after the displacement safety index meets the requirement after the structural model is continuously adjusted and calculated, comparing the frequency safety index of the structural model of the denitration reactor, adjusting the model and calculating the structure, and adjusting the stress ratio index. After each model calculation, the safety information and economic information post-processing result of the structural model is formed.
Wherein the stress ratio member section adjustment, the displacement member section adjustment and the frequency member section adjustment form an iterative computation cycle, an optimal structure model which meets both the safety requirement and the economic requirement through the three part member section adjustment is fixed as an intermediate structure model result, the cycle is performed again after the first intermediate structure model is fixed, the intelligent computation module automatically selects another structure system to perform initial structure model computation, secondary iterative optimization computation is performed according to the stress ratio member section adjustment, the displacement member section adjustment and the frequency member section adjustment to form an intermediate structure model result of the next structure system, finally the economic indexes are compared according to the intermediate structure model results of the two systems, the system structure model with the optimal economic indexes is selected as a final structure model, and in the iterative optimization computation process, the optimization and alignment of the section of the component not only adjusts the component with overlarge stress ratio, overlarge displacement and other safety indexes which do not meet the requirements, but also adjusts the section of the component with overlarge stress ratio, overlarge displacement and other safety indexes, namely, the optimization and adjustment of the section of the component simultaneously carries out safety adjustment and economic adjustment. And the final structural model information calculated by the intelligent calculation module is transmitted to the intelligent drawing module to form a final drawing finished product.
Because the denitration reactor structure is a fixed structure, when the denitration reactor structure is calculated according to a conventional finite element, each structural model needs a designer to perform manual model pretreatment before calculation, the designer needs to manually check the post-processing result of the model after calculation, and the designer performs manual model adjustment and recalculates according to the post-processing result calculated by the model. Due to the complexity of the process, usually, the model calculation generally performed by designers for each project is basically less than 5 times, and the final engineering calculation result often has larger structural safety margin and may have the situation that individual structural components have safety hazards. Conventional structural model calculates, and the designer's manual work is participated in more, and design efficiency is lower to very easily appear with the extravagant condition of the great engineering of steel volume, it is great still to appear individual component structure atress easily, the potential safety hazard condition appears. Through the intelligent denitration reactor structure calculation module, all pretreatment work before the denitration reactor structure model is calculated is subjected to template solidification, the intelligent calculation module can automatically perform safety and economic check comparison through the calculation result, the structural model member section and the model system can be automatically adjusted, more than ten or even dozens of hundreds of structural models can be calculated at one time, the final safe and economic structural model calculation result can be calculated through iterative optimization, manual intervention of designers is not needed in the middle process, and the calculation efficiency is greatly improved. In addition, the template solidification is carried out according to a large amount of experience summary in the model calculation preprocessing work, so that the condition of parameter selection error in the calculation process is avoided, and the calculation accuracy and precision of the engineering are greatly improved. Moreover, the iterative optimization calculation loop function embedded in the intelligent calculation module optimizes and adjusts a final structure model through structural calculation comparison of a large number of models after continuous automatic adjustment, and the safety and the economical efficiency of the structure are greatly improved. The intelligent computing module is a core module of the denitration reactor structure intelligent optimization design system.
When a conventional finite element structure is calculated, a designer continuously adjusts and calculates a model of the denitration reactor structure, and the designer often needs manual participation of several days when a satisfactory calculation result is manually designed. Through the intelligent calculation module, the workload of the part of a designer is saved, and after the designer manually inputs engineering information through the intelligent modeling module, the intelligent calculation module can automatically calculate and adjust hundreds of models, and the process is generally completed within one hour.
The intelligent optimization design system is suitable for an intelligent modeling module, a development platform of the intelligent optimization design system of the denitration reactor in the intelligent calculation module can be developed on the basis of large finite element calculation software such as PKPM, MIDAS, SAP2000, STAAD.PRO and the like, all functions of the original large finite element calculation software are reserved, a designer of a pretreatment series template in the intelligent calculation module can directly select the template, the designer can modify the series template to form a new template, and a component section library also supports manual addition and deletion functions to form a new component section library.
Has the advantages that:
through the intelligent calculation module, a large amount of engineering quantities such as various data preprocessing, each structural model adjustment calculation and the like in the structural calculation process are saved, the N models can be calculated and contrastively analyzed and optimized at one time, errors which easily occur in the conventional calculation process are avoided, the design efficiency is greatly improved, and the safety and the economical efficiency of the structure are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of an intelligent computing module for a denitration reactor structure according to an embodiment of the present invention;
fig. 2 is a flowchart of an intelligent optimization calculation iterative loop of an intelligent calculation module of a denitration reactor structure according to an embodiment of the present invention.
1-an intelligent modeling module; 2-an intelligent computing module; 3-an intelligent post-processing module; 4-intelligent drawing module; 5-adjusting the section of the component;
2 a-pretreatment series templates; 2 b-iterative optimization calculation linkage adjustment;
2 aa-calculating the mechanical property of the material; 2 ab-load combination algorithm conversion; 2 ac-library of component optimized cross sections; 2 ad-design parameter template curing;
2 ba-structural system selection; 2 bb-structural model calculation; 2 bc-stress ratio calculation adjustment; 2 bd-displacement calculation means adjustment; 2 be-frequency calculation means adjustment;
2 aaa-automatic calculation of safety factor; 2 aab-allowable stress automatic calculation;
2 aba-allowable stress method; 2 abb-algorithm conversion; 2 abc-extreme state design;
2 baa-transverse and vertical stiffeners as main body system; 2 bab-vertical stiffening rib is a main body system;
2 bca-stress ratio index comparative analysis;
2 bda-comparative analysis of displacement index;
2 bea-frequency index comparison analysis;
2 abba-elastic modulus is automatically calculated; 2 abbb-shear modulus is automatically calculated; 2 abbc-yield strength automatic calculation; 2 abbd-tensile strength is automatically calculated;
2 abbe-shear strength automatic calculation; automatically calculating the pressure-bearing strength of the 2 abbf-end face; automatically calculating the 2 abbg-subentry coefficient; 2 abbh-combination coefficient is automatically calculated;
1-an intelligent modeling module; 3-an intelligent post-processing module; 4-intelligent drawing module; 6-transverse and vertical stiffening ribs are used as a primary structural model of the main body system; 7-the vertical stiffening rib is a primary structural model of the main system; 8-comparing and analyzing economic indexes; 9-final structural model;
2 ac-library of component optimized cross sections; 6 a-calculating the stress ratio of the system to the adjusted structural model; 6 b-system-displacement calculation adjusted structure model; 6 c-calculating an adjusted structure model by using a system I frequency;
7 a-calculating an adjusted structure model according to the stress ratio of the system II; 7 b-calculating the adjusted structure model by using the second displacement of the system; 7 c-calculating the adjusted structural model by using the system II frequency;
2bb 6-architecture one structure model calculation; 2bc 6-system stress ratio calculation adjustment;
2bd 6-system one displacement calculation adjustment; 2be 6-system one frequency calculation adjustment;
2bb 7-architecture two model calculation; 2bc 7-system two-stress ratio calculation adjustment;
2bd 7-system two displacement calculation adjustment; 2be 7-system two-frequency calculation adjustment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, in the intelligent optimization design system of the denitration reactor structure developed by the present invention, the intelligent calculation module 2 is a core module, which is connected with the intelligent modeling module 1 in front and then connected with the intelligent post-processing module 3 and the intelligent drawing module 4, and the whole intelligent optimization design system of the denitration reactor has a core iterative optimization calculation function, and the module can automatically and intelligently operate, and can perform system optimization and rod optimization of the denitration reactor structure model in one operation process, and automatically and intelligently complete the design optimization work of the denitration reactor structure, thereby not only greatly improving the work efficiency, but also improving the safety and economy of calculation, and improving the design precision and quality.
The intelligent computing module 2 integrates design experience formed in the daily design process of the denitration reactor structure and the denitration reactor structure optimization computing theory and carries out computerized processing, so that the intelligent computing module can replace a designer to automatically carry out structure iteration optimization computing, the effects of structure intelligent system optimization and component optimization are achieved, automatic background operation of the denitration reactor structure is realized, time is saved, design errors are avoided, and the safety and the economy of design are greatly improved.
The intelligent calculating module 2 for the denitration reactor structure comprises a pretreatment series template 2a and an iterative optimization calculation linkage adjusting 2 b.
The pretreatment series template 2a comprises material mechanical property calculation 2aa, load combination algorithm conversion 2ab, a component optimization section library 2ac and design parameter template curing 2 ad.
The iterative optimization calculation linkage adjustment 2b comprises a structural system selection 2ba, a structural model calculation 2bb, a stress ratio calculation adjustment 2bc, a displacement calculation component adjustment 2bd and a frequency calculation component adjustment 2 be.
The material mechanical property calculation 2aa comprises two parts of automatic safety coefficient calculation 2aaa and automatic allowable stress calculation 2 aab. The load combination algorithm conversion 2ab includes an allowable stress method 2aba, an algorithm conversion 2abb, and a limit state design method 2 abc. The algorithm conversion 2abb includes automatic calculation of elastic modulus 2abba, automatic calculation of shear modulus 2abbb, automatic calculation of yield strength 2abbc, automatic calculation of tensile strength 2abbd, automatic calculation of shear strength 2abbe, automatic calculation of end surface pressure strength 2abbf, automatic calculation of division coefficient 2abbg, and automatic calculation of combination coefficient 2 abbh. The component optimization section library 2ac includes a transverse stiffener section library 2aca, a vertical stiffener section library 2acb, and an inner brace section library 2 acc. The structural system selection 2ba includes transverse and vertical stiffeners as main body system 2baa, and vertical stiffeners as main body system 2 bab.
In the conventional denitration reactor structure calculation, the stress performance of steel under the high-temperature condition is analyzed and summarized, a calculation formula of the mechanical property of the steel material under the high-temperature condition under different conditions is formed, the function of automatically calculating the 2aaa and the allowable stress 2aab according to the safety coefficient in the intelligent modeling module 2 is realized, and the function of the allowable stress method 2aba in the intelligent calculation module 2 is realized according to the automatically calculated 2aaa and the allowable stress 2 aab. In addition, the invention also carries out deep research on the allowable stress method 2aba and the extreme state method 2abc, forms the result of load combination algorithm conversion 2abb between the allowable stress method 2aba and the extreme state method 2abc, and carries out embedding in an intelligent calculation module, and in the conversion process between the allowable stress method 2aba and the extreme state method 2abc, the invention also forms the result of the extreme state method 2abc according to algorithm conversion 2abb, and necessary results of automatic calculation of elastic modulus 2aba, automatic calculation of shear modulus 2abbb, automatic calculation of yield strength 2abbc, automatic calculation of tensile strength 2abbd, automatic calculation of shear strength 2abbe, automatic calculation of end surface pressure strength 2abbf, automatic calculation of element coefficient 2abbg, and automatic calculation of combination coefficient 2 abbg.
In the intelligent computing module 2, the invention develops an iterative optimization computing theory and carries out software processing in the denitration reactor structure to form the achievement content of the iterative optimization computing linkage adjustment 2 b. In the iterative optimization calculation process, the invention summarizes and software-forms five contents of a structural system selection 2ba, a structural model calculation 2bb, a stress ratio calculation adjustment 2bc, a displacement calculation member adjustment 2bd and a frequency calculation member adjustment 2be in an intelligent modeling module, and forms iterative optimization loop calculation. During primary structure calculation, the intelligent modeling module 1 firstly selects the transverse and vertical stiffening ribs as a main system primary structure model 6 to perform structural model optimization calculation under the system, and then performs structural model optimization calculation under the main system primary structure model 7 system by using the vertical stiffening ribs after the structural model is optimized out of the system. After the structural models are calculated through iterative optimization under two structural systems of the denitration reactor structure, indexes such as steel consumption for the areas of the two models are compared through economic index comparison analysis 8, the structural model with the minimum steel consumption is selected as a final structural model 9, then an intelligent post-processing module 3 is called to form a calculation book for the post-processing result of the final model 9, and then an intelligent drawing module 4 is called to draw an engineering construction drawing.
In the iterative optimization calculation linkage adjustment 2b process, the iterative optimization calculation under each structural system comprises three parts of optimization adjustment contents, namely stress ratio calculation adjustment 2bc, displacement calculation component adjustment 2bd and frequency calculation component adjustment 2be, and the three parts of optimization adjustment contents call a component section library 2ac each time to carry out model component section adjustment on internal parameters in an intelligent modification information menu in the intelligent modeling module 1 according to the comparison analysis adjustment result and form three cyclic adjustment contents. If the structure optimization calculation adjustment is performed on the primary structural model 6 with the transverse and vertical stiffeners as the main body system (the model structure is the first structural system), firstly, a primary structure model formed in an intelligent modeling module 1 under a structure system I is used for calculating a system structure model 2bb6, and according to the calculation result, the system stress ratio is calculated and adjusted 2bc6, when the stress ratio of the system is calculated and adjusted to be 2bc6, the section of the preliminary structural model component is adjusted to be a structural model meeting the stress ratio requirement according to the component section library 2ac and the intelligent modeling module 1, i.e., the system stress ratio calculation adjusted structural model 6a, during the formation of the system stress ratio calculation adjusted structural model 6a, the system stress ratio calculation adjustment 2bc6, the component section library 2ac and the intelligent modeling module 1 form a small loop of stress ratio calculation adjustment, and the small loop aims to optimize and adjust a structural model with a stress ratio meeting requirements. After the model stress calculation result meets the requirement, performing system displacement calculation adjustment 2bd6, when performing displacement calculation adjustment, as with stress ratio component section adjustment, calling the library 2ac and the intelligent modeling module 1 to form a small cycle again according to the component section library 2ac, then forming a structural model 6b after performing displacement calculation adjustment, wherein the model displacement meets the requirement, but the stress ratio may cause partial component stress to be not qualified due to the factor of displacement adjustment, then performing stress ratio adjustment and displacement adjustment on the model to form a large cycle, forming a structural model which meets both the stress requirement and the displacement requirement, then performing system-frequency calculation adjustment 2be6, as before, when performing frequency adjustment, calling the component section library 2ac and the intelligent modeling module 1 to form a small cycle, and forming a system-frequency calculation adjusted structural model 6c after performing system-frequency calculation adjustment after small cycle, the model basically meets the safety requirement, and for further optimization, the structural model 6c is subjected to stress ratio adjustment, displacement adjustment and frequency adjustment to form another large cycle until the structural model with the stress ratio, the displacement and the frequency meeting the requirements is formed. In the adjusting process of the large-circulation structural member and the small-circulation structural member, the section of the structural member can be adjusted to be large and small simultaneously according to the comparison and analysis result, namely, the section of the structural member is adjusted in the large-circulation and small-circulation structural member adjusting process, and the structural model is adjusted safely and economically according to the calculation result. After the iterative optimization calculation adjustment of the transverse stiffening rib as a main body system primary structure model 6 (the model structure is a structure system I), an intermediate structure model is formed, and the intelligent calculation module performs the iterative optimization calculation adjustment of the vertical stiffening rib as a main body system primary structure model 7 (the model structure is a structure system II) to form the intermediate structure model. And the iterative optimization calculation process of the system two is the same as that of the system one. After three intermediate structure models formed by two structure systems are analyzed 8 contents according to economic indexes, a structure system model with the minimum steel consumption is judged, a final structure model 9 of the project is formed, then the intelligent post-processing module 3 is called, model calculation post-processing results such as a calculation book are formed, and then the intelligent drawing module 4 is called to form a project construction drawing.
According to the intelligent calculation module 2, the structural calculation workload of the denitration reactor can be reduced by more than 95%, through the intelligent calculation module 2, the structural model formed by the intelligent modeling module 1 can be subjected to iterative optimization calculation for hundreds of times without participation of designers, the workload of manual model adjustment and calculation of designers is saved, the stress ratio of most structural members of the final calculation result can be controlled between 0.6 and 0.9, the stress performance of the structural members of the denitration reactor is fully exerted, the steel consumption of most structural area of the denitration reactor can be controlled below 100kg/m2, the working efficiency is improved, and the safety and the economy of the structure are improved.
Example 1: a600 MW unit denitration reactor is 15 meters long and 12 meters wide, the design pressure is 4.8KPa, the design temperature is 380 degrees, the accumulated dust load is 40kg/m2, the basic wind pressure is 0.40KN/m2, the basic earthquake intensity is 7 degrees, the earthquake acceleration is 0.05g, and the structural calculation is carried out.
And opening an intelligent optimization design system of the denitration reactor structure according to the engineering example, and completing the construction of the primary structural model of the engineering example through a man-machine interaction information menu of an intelligent modeling module.
In the construction process of the structural model, when the design temperature is input and Q345B steel is selected, the intelligent calculation module can automatically select a pre-treatment series template cured by the intelligent calculation module according to the temperature value, automatically calculate the safety factor and the steel allowable stress suitable for the project according to the series template, and automatically form various values of the steel elastic modulus, the shear modulus, the yield strength, the tensile strength, the shear strength, the end surface bearing strength, the subentry coefficient, the combination coefficient and the like of the project according to the safety factor and the steel allowable stress and form a load combination formula in the limit state. These numerical information are simultaneously given to the structural member.
In the engineering example, the specification and the model of the section of the member of which the section is adjusted by manually solidifying the specification and the model of the section of the member in various member section libraries are usually required, and when the intelligent computing module iteratively optimizes and calculates and adjusts the structural model, the section of the member of the model is only selected from the section libraries, so that the selection efficiency is improved. According to the engineering example, the I-shaped steel section library is automatically selected for calculating, optimizing and adjusting the section of the stiffening rib, and the inner support rod automatically performs calculating, optimizing and adjusting on the selected steel pipe section library.
In the engineering project, relevant design parameters such as the earthquake resistance level of the engineering structural member and the grid division of the wall plate of the road body can be automatically and intelligently judged and given according to embedded rules.
When the structure is calculated, the body system-structure model is firstly calculated according to a primary structure model formed by the intelligent modeling module, then the stress ratio index comparison analysis is carried out according to the calculation result, then the section information of the structural member is adjusted, then the displacement calculation analysis adjustment and the frequency calculation analysis adjustment are carried out, and the calculation result model of the system I is formed after the iterative optimization calculation of two times of large circulation and three times of small circulation. And after the iterative optimization calculation of the system I is finished, performing the iterative optimization calculation of the structural model of the system II. And finally, carrying out steel consumption economy comparison analysis on the models of the two systems to select a final structure model, and taking the structure model calculation result as a final structure calculation result.
In the engineering example, all the component stress ratios are below 0.9 (80 percent of the component stress ratio is controlled between 0.6 and 0.85) and the amount of the steel for area use is 90kg/m through iterative optimization calculation by an intelligent calculation module2. The denitration reactor structure takes two minutes for intelligent modeling and 10 minutes for intelligent calculation, and the working efficiency is greatly improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides an intelligent computing module of denitration reactor structure intelligence optimal design system which characterized in that includes:
the core module of the denitration reactor structure intelligent optimization design system is an intelligent calculation module, and the intelligent calculation module comprises a pretreatment packaging series template and an iterative optimization calculation linkage adjustment module;
the intelligent computing module and the denitration reactor structural system are in intelligent modeling, intelligent post-processing and intelligent drawing module information interconnection and intercommunication, and a final better structural model can be obtained through intelligent iterative optimization at a computer background;
the pretreatment packaging series template comprises four parts of intelligent calculation of material mechanical property, component optimization section library, load combination algorithm conversion and design parameter template solidification;
the iterative optimization calculation linkage adjustment module comprises five parts of structural system selection, structural model calculation, stress ratio member section adjustment, displacement member section adjustment and frequency member section adjustment, wherein the stress ratio member section adjustment, the displacement member section adjustment and the frequency member section adjustment form iterative calculation circulation, the member sections are adjusted into an optimal structural model through the three parts and fixed as an intermediate structural model result, after the first intermediate structural model fixation is completed, the circulation is performed again, the intelligent calculation module automatically selects another structural system to perform initial structural model calculation, secondary iterative optimization calculation is performed according to the stress ratio member section adjustment, the displacement member section adjustment and the frequency member section adjustment to form an intermediate structural model result of the next structural system, and finally, the economic indexes of the intermediate structural model results of the two systems are compared, and selecting the intermediate structure model with the optimal economic index as a final structure model.
2. The intelligent computing module according to claim 1, wherein the intelligent computation of the mechanical properties of the materials in the intelligent computing module comprises automatic safety coefficient computation and allowable stress automatic computation of steel materials according to design temperature;
the load combination algorithm conversion comprises allowable stress method design, limit state method design and mutual conversion;
the component optimization section library comprises a transverse reinforcing rib section library, a vertical reinforcing rib section library and a structural component library of internal support rods.
3. The intelligent computing module of claim 1, wherein the denitration reactor architecture comprises a transverse stiffener-based architecture, a vertical stiffener-based architecture, and a combination of transverse and vertical stiffeners.
4. The intelligent computing module of claim 1, wherein the human-machine model modification menu is a functional platform of an original large finite element software of the whole system, and the intelligent computing module is an open module.
5. The intelligent computing module of claim 1, wherein the intelligent computing module has memory and automatic learning functions, and the module can form a new structural computing pre-processing series template through different engineering instances, enrich section library contents, and improve efficiency during intelligent computing.
6. An implementation method of the intelligent computing module as claimed in claim 1, wherein during iterative optimization computation, stress ratio computation adjustment, displacement computation component adjustment, and frequency computation component adjustment continuously call a component section library and the intelligent modeling module to adjust the section model of the structural component to perform iterative optimization computation and form an iterative optimization computation loop according to comparison between the computation result and the safety index and the economic index in the intelligent modeling module.
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