CN117436283A - Computer aided design method, system and storage medium for chimney - Google Patents
Computer aided design method, system and storage medium for chimney Download PDFInfo
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Abstract
The invention relates to a computer aided design method, a design system and a storage medium of a chimney, which relate to the technical field of computer aided design, wherein the computer aided design method of the chimney comprises the steps of establishing a database, acquiring design index parameters, analyzing wall thickness data, determining wall thickness, analyzing height data, designing a basic section, designing a bottom section, designing a transition section, integrating a chimney body and the like; the computer aided design system of the chimney comprises a database module, a data input module, a data analysis module, a graphic design module and the like. The invention can greatly reduce the design burden of engineers, improve the design efficiency of the chimney and reduce the probability of design errors.
Description
Technical Field
The present invention relates to the field of computer aided design, and in particular, to a method, a system and a storage medium for computer aided design of a chimney.
Background
Computer Aided Design (CAD), i.e., the use of a computer and its graphics equipment to assist designers in performing design work, aims to reduce design difficulty and improve design efficiency. Especially in the drawing design stage, a user may modify design indexes in the design process, and the change of the design indexes often drives the change of each structural dimension, if the engineer re-makes the design drawing only because of the change of the design indexes, the labor intensity of the engineer is obviously greatly increased, and the design efficiency is reduced; frequent modification of design indicators also increases the probability of engineer design errors, which in turn leads to design disablement.
In the steel chimney processing industry, a customer only provides design indexes, a design unit needs to design a specific structure of a steel chimney according to the design indexes, and then the customer judges whether the specific structure of the steel chimney meets actual requirements. The design indexes provided by different clients are different, so that the designed steel chimney is always unique, namely, the design result cannot be transferred to other clients, and the burden of engineers is increased.
Disclosure of Invention
In order to reduce the burden of engineers in designing a chimney, the invention provides a computer-aided design method, a design system and a storage medium of the chimney.
In a first aspect, the invention provides a computer aided design method of a chimney, which adopts the following technical scheme:
a computer-aided design method of a chimney, comprising the steps of:
establishing a database: setting a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying powerA first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->；
Obtaining design index parameters: acquiring the height h of a chimney, the diameter d of the chimney and the highest flue gas temperature T;
wall thickness data analysis: if the height h of the chimney is greater than or equal to a first threshold valueTaking the first basic thickness +.>Otherwise, taking the second basic thickness +.>The method comprises the steps of carrying out a first treatment on the surface of the If the highest flue gas temperature T is greater than or equal to the second threshold value +.>Selecting a first etch thickness margin +.>Otherwise, select the second etching thickness margin +.>；
Determining the wall thickness: the minimum wall thickness S of the chimney is the sum of the selected base thickness and the corrosion thickness margin;
height data analysis: if it isJudging that the chimney does not need reinforcement; if->Judging that the chimney needs to be reinforced;
and (3) basic section design: if the chimney is judged not to need reinforcement, determining the length of the basic section as h; otherwise, determining the length of the basic section asWherein->And determining the diameter of the basic segment as +.>；
Bottom section design: if the chimney is judged not to need reinforcement, determining the length of the basic section to be 0; otherwise, determining the length of the basic section asWherein->And determining the diameter of the bottom section as +.>，/>；
And (3) designing a transition section: if the chimney is judged not to need reinforcement, determining that the length of the transition section is 0; otherwise, determining the length of the transition section asWherein->And determining the upper diameter of the transition piece +.>Lower diameter->Upper diameter of transition piece->Lower diameter of transition piece->；
Chimney integration: sequentially connecting the basic section design, the transition section design and the bottom section design, and，/>，/>and taking the minimum wall thickness S as the wall thickness of the base section, the transition section and the bottom section to prepare the pattern of the chimney body.
Optionally, a step of designing a rotary step ladder platform is further arranged after the step of integrating the chimney body;
rotating step ladder platform design: designing a rotary step and a layer 1 platform according to the height and the actual diameter of a chimney, wherein the rotary step and the layer 1 platform comprise a layer 1 platform design step, a rotary step design step and a rotary step platform integration step;
layer 1 platform design: obtaining the maximum diameter D of the chimney body, taking the maximum diameter D of the chimney body as the inner diameter of the 1 st layer of platform, taking D+K as the outer diameter of the 1 st layer of platform, and taking K as the standard value of the width of the platform; setting the multiplying power of a platformThe layer height of the layer 1 platform is +.>，/>Wherein->；
The design step of the rotary step ladder: obtaining the maximum diameter D of the chimney body, taking the maximum diameter D of the chimney body as the inner diameter of the rotary step, taking D+K as the outer diameter of the rotary step, and takingAs the pitch of the rotating step, the layer height of the layer 1 platform is +.>As the axial length of the rotating step;
rotating step platform integration: and integrating the layer 1 platform, the rotary step and the chimney body according to the calculation results of the layer 1 platform design step and the rotary step design step, so as to prepare the chimney body, the layer 1 platform and the rotary step.
Optionally, a step of designing a cat ladder platform is further arranged after the step of designing the rotating step ladder platform;
designing a cat ladder platform: designing an nth layer of platform and an nth layer of ladder according to the height and the actual diameter of the chimney, wherein the nth layer of platform design step, the nth layer of ladder design step and the ladder platform integration step are included;
design of an nth layer platform: acquiring the height of an nth layer platform，/>，/>Is the standard interval between two adjacent layers of platforms; taking one end of a basic section of the bottom section principle as a starting point, acquiring a height of +.>Chimney diameter->As the inner diameter of the n-th layer plateau +.>An outer diameter as an nth layer land;
design of an nth layer ladder stand: the acquisition height isDiameter of chimney>，/>And will->E is the standard distance between the ladder stand and the central axis of the chimney body as the distance between the ladder stand and the central axis of the chimney body;
and (3) integrating a cat ladder platform: according to the calculation results of the design step of the nth layer platform and the setting step of the nth layer ladder, integrating the nth layer platform, the nth layer ladder and the chimney body, and further preparing the chimney body, the nth layer platform and the patterns of the nth layer ladder.
Optionally, in the design step of the nth layer platform, the length of the nth layer platform isThe method comprises the steps of carrying out a first treatment on the surface of the And the n-th layer platform and the n+1-th layer platform are arranged in a staggered way.
Optionally, in the design step of the nth layer of the ladder, the nth layer of the ladder and the n+1th layer of the ladder are arranged in a staggered manner, and the nth layer of the ladder and the n+1th layer of the ladder are respectively arranged at two ends of the nth layer of the platform.
In a second aspect, the invention provides a computer aided design system of a chimney, which adopts the following technical scheme:
a computer-aided design system for a chimney, comprising the following modules:
a database module: for storing a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Standard value K of the platform width;
and a data input module: the device is used for inputting the height h, the diameter d and the highest flue gas temperature T of a chimney;
and a data analysis module: the input end is connected with the output ends of the data input module and the database module and is used for controlling the data input module according to a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Analyzing the height h, the diameter d and the highest flue gas temperature T of the chimney input by the input module into specific parameters used for designing the chimney according to the standard value K of the width of the platform;
and a graphic design module: the input end is connected with the output end of the data analysis module and is used for drawing a chimney graph according to the specific parameters obtained by analysis of the data analysis module.
Optionally, the input end of the data input module is also connected with the output end of the data analysis module, and the data input module is also used for inputting the multiplying power of the platform；
The device also comprises a judging module:
and a judging module: the input end is connected with the output end of the data input module, and the output end is connected with the input end of the data analysis module for judging the multiplying power of the platformIs reasonable.
In a third aspect, a storage medium has a computer program stored thereon; the computer program, when executed by a processor, implements the method as described in the first aspect.
In summary, the present invention includes at least one of the following beneficial technical effects:
1. through the thickness data analysis and the height data analysis, the design index of the chimney can be analyzed into specific chimney parameters, the structure type of the chimney is analyzed according to the chimney parameters, and the pattern of the chimney body is prepared; therefore, the design burden of engineers can be greatly reduced, the design efficiency of the chimney is improved, and meanwhile, the probability of design errors can be reduced.
2. Through the setting of rotatory step platform design step, can be according to the parameter of the specific structure analysis 1 st layer platform of chimney body and the parameter of rotatory step, so the required 1 st layer platform of chimney and rotatory step also can directly make the figure, has further reduced engineer's design burden.
3. Through the setting of cat ladder platform design step, can be according to the parameter of the diameter analysis nth layer platform of chimney body different positions the structural parameter of nth layer cat ladder, so the required nth layer platform of chimney and nth layer cat ladder also can directly make the figure, further reduced engineer's design burden.
Drawings
FIG. 1 is a schematic flow chart of example 1 of the present application;
fig. 2 is a system diagram of embodiment 2 of the present application.
Detailed Description
The invention is described in further detail below in connection with fig. 1-2.
Example 1: the embodiment discloses a computer aided design method of a chimney, referring to fig. 1, the computer aided design method of the chimney comprises the following steps:
s1: establishing a database: setting a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->First base thicknessIs->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Standard spacing between two adjacent layers of platforms>The standard value K of the width of the platform and the standard distance E of the ladder stand from the chimney body; the data are all set according to GB50051-2013, the reinforcement multiplying power +.>Top and bottom magnification->Transition multiplying power->The value may be fixed or the range may be interval.
S2: obtaining design index parameters: and obtaining the height h of the chimney, the diameter d of the chimney and the highest flue gas temperature T.
S3: and (3) chimney design: according to the standard data in the established database S1 and the index data in the acquired design index parameter S2, a chimney is designed, and the chimney comprises a chimney body design step S3-1 and a terrace design step S3-2.
S3-1: the chimney body design: the structure of the chimney body is designed, and a graph is formed, wherein the structure comprises a wall thickness data analysis step S3-1-1, a wall thickness determination step S3-1-2, a height data analysis step S3-1-3, a basic section design step S3-1-4, a bottom section design step S3-1-5, a transition section design step S3-1-6 and a chimney body integration step S3-1-7.
S3-1-1: wall thickness data analysis:if the height h of the chimney is greater than or equal to a first threshold valueTaking the first base thicknessOtherwise, taking the second basic thickness +.>The method comprises the steps of carrying out a first treatment on the surface of the If the highest flue gas temperature T is greater than or equal to the second threshold value +.>Selecting a first etch thickness margin +.>Otherwise, select the second etching thickness margin +.>。
S3-1-2: determining the wall thickness: the minimum wall thickness S of the stack is the sum of the selected base thickness and the corrosion thickness margin. With the height h of the chimney being greater than or equal to a first threshold valueAnd the highest flue gas temperature T is more than or equal to a second threshold value +.>For example, the base thickness at this time is chosen to be the first base thickness +.>The etching thickness margin selects a first etching thickness margin +.>Minimum wall thickness of chimney。
S3-1-3: height data analysis: if it isJudging that the chimney does not need reinforcement; if->And judging that the chimney needs to be reinforced.
S3-1-4: and (3) basic section design: if the chimney is judged not to need reinforcement, determining the length of the basic section as h; otherwise, determining the length of the basic section asWherein->And determining the diameter of the basic segment as +.>。
S3-1-5: bottom section design: if the chimney is judged not to need reinforcement, determining the length of the basic section to be 0; otherwise, determining the length of the basic section asWherein->And determining the diameter of the bottom section as +.>，/>。
S3-1-6: and (3) designing a transition section: if the chimney is judged not to need reinforcement, determining that the length of the transition section is 0; otherwise, determining the length of the transition section asWherein->And determining the upper diameter of the transition piece +.>Lower diameter->Upper diameter of transition sectionLower diameter of transition piece->。
If it isIt turns out that the chimney comprises only a basic section, and that the diameter of the basic section is +.>The lengths of the bottom section and the transition section are 0; if->It is proved that the chimney comprises a basic section, a bottom section and a transition section, the diameter of the basic section is still +.>The diameters of the bottom section and the transition section are +.>And (5) calculating to obtain the product.
S3-1-7: chimney integration: sequentially connecting the basic section design, the transition section design and the bottom section design, and，/>，/>and taking the minimum wall thickness S as the wall thickness of the base section, the transition section and the bottom section to prepare the pattern of the chimney body.
S3-2: step design: the method comprises the steps of designing a step, a step and forming a graph, wherein the step, the step and the step comprise the step of designing the step S3-2-1 of the step and the step S3-2-2 of the step.
S3-2-1: rotating step ladder platform design: the method comprises the steps of designing a rotary step and a layer 1 platform according to the height and the actual diameter of a chimney, wherein the step comprises a layer 1 platform designing step S3-2-1-1, a rotary step designing step S3-2-1-2 and a rotary step platform integrating step S3-2-1-3.
S3-2-1-1: layer 1 platform design: obtaining the maximum diameter D of the chimney body, taking the maximum diameter D of the chimney body as the inner diameter of the 1 st layer of platform, taking D+K as the outer diameter of the 1 st layer of platform, and taking K as the standard value of the width of the platform; setting the multiplying power of a platformThe layer height of the layer 1 platform is +.>，/>Wherein->。
S3-2-1-2: the design step of the rotary step ladder: obtaining the maximum diameter D of the chimney body, taking the maximum diameter D of the chimney body as the inner diameter of the rotary step, taking D+K as the outer diameter of the rotary step, and takingAs the pitch of the rotating step, the layer height of the layer 1 platform is +.>As the axial length of the rotating step.
S3-2-1-3: rotating step platform integration: and integrating the layer 1 platform, the rotary step and the chimney according to the calculation results of the layer 1 platform design step S3-2-1-1 and the rotary step design step S3-2-1-2, so as to obtain the chimney and the patterns of the layer 1 platform and the rotary step.
By multiplying the platform bySet to->When the chimney needs to be reinforced (namely, when the bottom section and the transition section are arranged), the 1 st layer of platform is ensured to be completely positioned on the bottom section, so that the rotary step ladder is ensured not to shrink in diameter.
S3-2-2: designing a cat ladder platform: designing an nth layer of platform and an nth layer of ladder according to the height and the actual diameter of the chimney, and forming a pattern, wherein n is more than or equal to 2; the method comprises an nth layer platform design step S3-2-2-1, an nth layer ladder design step S3-2-2-2 and a ladder platform integration step S3-2-2-3.
S3-2-2-1: design of an nth layer platform: acquiring the height of an nth layer platform，/>，Is the standard interval between two adjacent layers of platforms; taking one end of a basic section of the bottom section principle as a starting point, acquiring a height of +.>Chimney diameter->As the inner diameter of the n-th layer plateau +.>An outer diameter as an nth layer land; the length of the n-th layer platform is +.>The method comprises the steps of carrying out a first treatment on the surface of the And the n-th layer platform and the n+1-th layer platform are arranged in a staggered way.
S3-2-2-2: design of an nth layer ladder stand: the acquisition height isDiameter of chimney>，/>And will->E is the standard distance between the ladder stand and the central axis of the chimney body as the distance between the ladder stand and the central axis of the chimney body; the nth layer of cat ladder is crisscross setting with the nth+1th layer of cat ladder, and nth layer of cat ladder and the nth+1th layer of cat ladder set up respectively at the both ends of nth layer platform.
S3-2-2-3: and (3) integrating a cat ladder platform: according to the calculation results of the design step of the nth layer platform and the setting step of the nth layer ladder, integrating the nth layer platform, the nth layer ladder and the chimney body, and further preparing the chimney body, the nth layer platform and the patterns of the nth layer ladder.
The implementation principle of the computer aided design method of the chimney of the embodiment is as follows:
firstly, a database is established according to GB50051-2013, distinguishing points of different types of chimneys are determined, basic design indexes of the chimneys are input, then, the heights and the wall thicknesses used when the chimneys are designed are analyzed according to the height h, the diameter d and the highest flue gas temperature T of the input chimneys, the lengths and the diameters of a base section, a bottom section and a transition section in a chimney body are judged, and then the bottom section, the transition section and the base section are sequentially connected, so that the pattern of the chimney body can be obtained.
And then determining the position and the size of the landing according to the lengths and the diameters of the bottom section, the transition section and the basic section. When designing the ladder stand, firstly designing a layer 1 platform, and if a bottom section exists, constructing the layer 1 platform on the bottom section; thus, according to the multiplying power of the platformLimiting the height of the layer 1 platform, analyzing the diameter of the bottom of the chimney body, and determining the inner diameter of the layer 1 platform according to the diameter of the bottom of the chimney bodyAnd an outer diameter. And then determining the inner diameter, the outer diameter and the screw pitch of the rotary step according to the diameter of the bottom of the chimney and the height from the ground to the layer 1 platform, so that the design of the layer 1 platform on the rotary step can be completed.
Then, designing an nth layer platform and an nth layer ladder stand by taking the 1 st layer platform as a reference; designing an nth layer of platform, namely acquiring the actual diameter of a chimney at the height according to the height corresponding to the nth layer of platform, and further determining the inner diameter and the outer diameter of the nth layer of platform; then designing an nth layer of climbing ladder, wherein the nth layer of climbing ladder is connected with the nth-1 layer of platform and the nth layer of platform, and the design height is obtained as followsDiameter of chimney>And is +.>Diameter of chimney>And determining the distance between the crawling ladder and the central axis of the chimney body, and further completing the design. Through the design method, the design burden of engineers can be greatly reduced, the design efficiency of the chimney is improved, and meanwhile, the probability of design errors can be reduced.
Example 2: the embodiment discloses a computer aided design system of a chimney, referring to fig. 2, the computer aided design system of the chimney comprises the following modules:
a database module: for storing a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Standard spacing between two adjacent layers of platforms>Standard value K of platform width and standard distance E of cat ladder from chimney body.
And a data input module: height h, chimney diameter d, highest flue gas temperature T and platform multiplying power for inputting chimneyAnd the layer height of the layer 1 platform +.>. The data input module is used for inputting the height h of the chimney, the diameter d of the chimney and the highest flue gas temperature T, and the public data analysis module is used for analyzing the flue gas temperature T.
And a data analysis module: the input end is connected with the output ends of the data input module and the database module and is used for controlling the data input module according to a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->And analyzing the height h, the diameter d and the maximum flue gas temperature T of the chimney input by the input module into specific parameters used for designing the chimney.
And a judging module: the input end is connected with the output end of the data input module, and the output end is connected with the input end of the data analysis module for judging the multiplying power of the platformIs reasonable.
If in the analysis process, there isIn the case of (2), the data input module is triggered again and used for inputting the platform multiplying power +.>Or the layer height of the layer 1 platform +.>. If the platform multiplying power is input by the data input module>Will->Directly and->Comparing, if the data input module inputs the layer height of the 1 st layer platform +.>Then according to the layer height of the layer 1 platform +.>Computing platform multiplying power->，/>And then will->And->Comparing if->Re-input if->Then the parsing continues.
And a graphic design module: the input end is connected with the output end of the data analysis module and is used for drawing a chimney graph according to the specific parameters obtained by analysis of the data analysis module.
The implementation principle of the computer aided design system of the chimney of the embodiment is as follows:
the data input module is used for inputting the height h, the diameter d and the highest flue gas temperature T of a basic design index chimney of the chimney, and then the data analysis module uses a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Standard spacing between two adjacent layers of platforms>And analyzing the height h of the chimney, the diameter d of the chimney and the highest flue gas temperature T according to the standard value K of the width of the platform and the standard distance E of the ladder stand from the chimney body, so as to obtain specific parameters used in the design of the chimney.
In the course of analysis, if presentIn the case of (2), the data input module is triggered again and used for inputting the platform multiplying power +.>Or the layer height of the layer 1 platform +.>. If the platform multiplying power is input by the data input module>Will->Directly and->Comparing, if the data input module inputs the layer height of the 1 st layer platform +.>Then according to the layer height of the layer 1 platform +.>Computing platform multiplying power->，/>And then will->And->And comparing and further analyzing the data. And after the analysis is finished, drawing a graph according to the data obtained by the analysis, and further obtaining a chimney image.
Example 3: the present embodiment discloses a computer-aided design storage medium of a chimney, in which a program is stored, which program, when executed, can implement part or all of the steps of the method described in embodiment 1.
The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (8)
1. A computer aided design method of a chimney, characterized in that: the method comprises the following steps:
establishing a database: setting a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->；
Obtaining design index parameters: acquiring the height h of a chimney, the diameter d of the chimney and the highest flue gas temperature T;
wall thickness data analysis: if the height h of the chimney is greater than or equal to a first threshold valueTaking the first basic thickness +.>Otherwise takeSecond basis thickness->The method comprises the steps of carrying out a first treatment on the surface of the If the highest flue gas temperature T is greater than or equal to the second threshold value +.>Selecting a first etch thickness margin +.>Otherwise, select the second etching thickness margin +.>；
Determining the wall thickness: the minimum wall thickness S of the chimney is the sum of the selected base thickness and the corrosion thickness margin;
height data analysis: if it isJudging that the chimney does not need reinforcement; if->Judging that the chimney needs to be reinforced;
and (3) basic section design: if the chimney is judged not to need reinforcement, determining the length of the basic section as h; otherwise, determining the length of the basic section asWherein->And determining the diameter of the basic segment as +.>；
Bottom section design: if the chimney is judged not to need reinforcement, determining the length of the basic section to be 0; otherwise, determining the length of the basic section asWherein->And determining the diameter of the bottom section as +.>，/>；
And (3) designing a transition section: if the chimney is judged not to need reinforcement, determining that the length of the transition section is 0; otherwise, determining the length of the transition section asWherein->And determining the upper diameter of the transition piece +.>Lower diameter->Upper diameter of transition piece->Lower diameter of transition piece->；
Chimney integration: sequentially connecting the basic section design, the transition section design and the bottom section design, and，/>，/>and taking the minimum wall thickness S as the wall thickness of the base section, the transition section and the bottom section to prepare the pattern of the chimney body.
2. A method of computer aided design of a chimney according to claim 1, characterized in that: a step of designing a rotating step ladder platform is further arranged after the step of integrating the chimney body;
rotating step ladder platform design: designing a rotary step and a layer 1 platform according to the height and the actual diameter of a chimney, wherein the rotary step and the layer 1 platform comprise a layer 1 platform design step, a rotary step design step and a rotary step platform integration step;
layer 1 platform design: obtaining the maximum diameter D of the chimney body, taking the maximum diameter D of the chimney body as the inner diameter of the 1 st layer of platform, taking D+K as the outer diameter of the 1 st layer of platform, and taking K as the standard value of the width of the platform; setting the multiplying power of a platformThe layer height of the layer 1 platform is +.>，/>Wherein->；
The design step of the rotary step ladder: obtaining the maximum diameter D of the chimney body, taking the maximum diameter D of the chimney body as the inner diameter of the rotary step, taking D+K as the outer diameter of the rotary step, and takingAs the pitch of the rotating step, the layer height of the layer 1 platform is setAs the axial length of the rotating step;
rotating step platform integration: and integrating the layer 1 platform, the rotary step and the chimney body according to the calculation results of the layer 1 platform design step and the rotary step design step, so as to prepare the chimney body, the layer 1 platform and the rotary step.
3. A method of computer aided design of a chimney according to claim 2, characterized in that: a step of designing a crawling ladder platform is further arranged after the step of designing the rotating walking ladder platform;
designing a cat ladder platform: designing an nth layer of platform and an nth layer of ladder according to the height and the actual diameter of the chimney, wherein the nth layer of platform design step, the nth layer of ladder design step and the ladder platform integration step are included;
design of an nth layer platform: acquiring the height of an nth layer platform，/>，/>Is the standard interval between two adjacent layers of platforms; taking one end of a basic section of the bottom section principle as a starting point, acquiring a height of +.>Diameter of chimneyAs the inner diameter of the n-th layer plateau +.>An outer diameter as an nth layer land;
design of an nth layer ladder stand: the acquisition height isDiameter of chimney>，/>And will->E is the standard distance between the ladder stand and the central axis of the chimney body as the distance between the ladder stand and the central axis of the chimney body;
and (3) integrating a cat ladder platform: according to the calculation results of the design step of the nth layer platform and the setting step of the nth layer ladder, integrating the nth layer platform, the nth layer ladder and the chimney body, and further preparing the chimney body, the nth layer platform and the patterns of the nth layer ladder.
4. A method of computer aided design of a chimney according to claim 3, characterized in that: in the design step of the nth layer platform, the length of the nth layer platform is as followsThe method comprises the steps of carrying out a first treatment on the surface of the And the n-th layer platform and the n+1-th layer platform are arranged in a staggered way.
5. The method of computer aided design of a chimney of claim 4, wherein: in the design step of the nth layer of the crawling ladder, the nth layer of the crawling ladder and the n+1th layer of the crawling ladder are arranged in a staggered mode, and the nth layer of the crawling ladder and the n+1th layer of the crawling ladder are respectively arranged at two ends of the nth layer of the platform.
6. A computer aided design system of a chimney, using the computer aided design method of a chimney according to any one of claims 1-5, characterized in that: the method comprises the following modules:
a database module: for storing a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying powerA first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Standard value K of the platform width;
and a data input module: the device is used for inputting the height h, the diameter d and the highest flue gas temperature T of a chimney;
and a data analysis module: the input end is connected with the output ends of the data input module and the database module and is used for controlling the data input module according to a first threshold valueSecond threshold->Reinforcing rate->Top and bottom magnification->Transition multiplying power->A first base thickness of->The second base thickness is->The first etching thickness margin is +>The second etching thickness margin is->Analyzing the height h, the diameter d and the highest flue gas temperature T of the chimney input by the input module into specific parameters used for designing the chimney according to the standard value K of the width of the platform;
and a graphic design module: the input end is connected with the output end of the data analysis module and is used for drawing a chimney graph according to the specific parameters obtained by analysis of the data analysis module.
7. A chimney computer-aided design system according to claim 6, characterized in that: the input end of the data input module is also connected with the output end of the data analysis module, and the data input module is also used for inputting the multiplying power of the platform；
The device also comprises a judging module:
and a judging module: the input end is connected with the output end of the data input module, and the output end is connected with the input end of the data analysis module for judging the multiplying power of the platformIs reasonable.
8. A computer-aided design storage medium of a chimney, having a computer program stored thereon; the method is characterized in that: the computer program implementing the method according to any of claims 1-5 when executed by a processor.
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