CN110222474B - Tower design method and system - Google Patents
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Abstract
The application provides a tower design method and a system, relates to the technical field of towers, and is used for designing the tower, wherein the tower comprises a plurality of sections of first-stage towers, and each section of first-stage tower comprises a plurality of sections of secondary towers; the method comprises the following steps: determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load; determining the wall thickness of the secondary tower according to the load; determining the weight of the secondary tower according to the section width, the wall thickness and the diameter of the secondary tower; and determining the weight of the primary tower according to the sum of the weights of all the secondary towers, wherein the weight of all the primary towers is less than or equal to the preset weight. The tower obtained by the tower design method can obtain a wall thickness with smaller thickness, ensures the whole weight of the tower to be lighter, and reduces the cost of the tower.
Description
Technical Field
The application relates to the technical field of towers, in particular to a tower design method and a system.
Background
The tower is a main bearing part of the wind generating set, and not only needs to bear the load of the whole wind generating set, but also needs to bear the external wind pressure and other loads, and once the tower collapses, the destructive loss of the whole wind generating set is often caused. Therefore, in the design of the wind turbine, the design of the tower is particularly important, and the manufacturing cost of the tower is high in the wind turbine.
Disclosure of Invention
The application aims to provide a tower design method and a tower design system, which can reduce the manufacturing cost of a tower.
In order to achieve the above purpose, the embodiments of the present application employ the following technical solutions:
in a first aspect, embodiments of the present application provide a tower design method for designing a tower, the tower including a plurality of sections of a primary tower, each section of the primary tower including a plurality of sections of a secondary tower, the method including: determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load; determining a wall thickness of the secondary tower from the load; determining a weight of the secondary tower from the pitch width, the wall thickness, and a diameter of the secondary tower; and determining the weight of the primary tower according to the sum of the weights of all the secondary towers, wherein the weight of all the primary towers is less than or equal to the preset weight.
Optionally, the diameter of each section of the primary tower comprises a primary bottom diameter and a primary top diameter; before the step of determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load, the method further comprises the following steps: determining the taper according to the diameter of the primary bottom, the diameter of the primary top and the length of the primary tower; and determining the pitch width of the secondary tower according to the taper, the diameter of the primary bottom and the blanking width of the steel plate.
Optionally, the step of determining a wall thickness of the secondary tower from the load comprises: determining a wall thickness of the secondary tower from the load and a limiting condition, wherein the limiting condition comprises an ultimate strength safety factor, and/or a fatigue damage value, and/or a buckling strength safety factor.
Optionally, before the step of determining the weight of the secondary tower according to the pitch width, the wall thickness and the diameter of the secondary tower, the method further includes: determining a secondary top diameter of a first section of secondary tower according to a preset primary bottom diameter, the taper and a section width of the first section of secondary tower of each section of the primary tower, wherein the secondary top diameter of the first section of secondary tower is used as the secondary bottom diameter of a second section of secondary tower; and determining the secondary top diameter of a third section of the secondary tower until determining the secondary bottom diameter of the penultimate section of the secondary tower according to the secondary bottom diameter of the second section of the secondary tower, the taper and the section width of the second section of the secondary tower.
Optionally, the step of determining the weight of the secondary tower from the pitch width, the wall thickness and the diameter of the secondary tower comprises: determining a weight of the secondary tower from the pitch width, the wall thickness, the secondary bottom diameter, and the secondary top diameter.
In a second aspect, embodiments of the present application provide a tower design system, including: the device comprises a load design module, a wall thickness design module and a weight design module; the load design module is used for determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load; the wall thickness design module is used for determining the wall thickness of the secondary tower according to the load; the weight design module is used for determining the weight of the secondary tower according to the pitch width, the wall thickness and the diameter of the secondary tower; the weight design module is further used for determining the weight of the primary tower according to the sum of the weights of all the secondary towers, wherein the weight of all the primary towers is smaller than or equal to the preset weight.
Optionally, the diameter of each section of the primary tower comprises a primary bottom diameter and a primary top diameter; the tower design system further comprises: a taper design module and a pitch width design module; the taper design module is used for determining the taper according to the diameter of the primary bottom, the diameter of the primary top and the length of the primary tower; and the pitch width design module is used for determining the pitch width of the secondary tower according to the taper, the diameter of the primary bottom and the blanking width of the steel plate.
Optionally, the wall thickness design module is specifically configured to determine the wall thickness of the secondary tower according to the load and a limiting condition, where the limiting condition includes an ultimate strength safety factor, and/or a fatigue damage value, and/or a buckling strength safety factor.
Optionally, the tower design system further comprises: a diameter design module; the diameter design module is used for determining the secondary top diameter of a first section of secondary tower according to the preset primary bottom diameter, the taper and the section width of the first section of secondary tower of each section of the primary tower, wherein the secondary top diameter of the first section of secondary tower is used as the secondary bottom diameter of a second section of secondary tower; and determining the secondary top diameter of a third section of the secondary tower until determining the secondary bottom diameter of the penultimate section of the secondary tower according to the secondary bottom diameter of the second section of the secondary tower, the taper and the section width of the second section of the secondary tower.
Optionally, the weight design module is specifically configured to determine the weight of the secondary tower according to the pitch width, the wall thickness, the secondary bottom diameter and the secondary top diameter.
According to the tower design method, the load of the secondary tower is determined according to the pitch width of the secondary tower and the reference load, the wall thickness of the secondary tower is determined according to the load, the weight of the secondary tower is determined according to the pitch width, the wall thickness and the diameter of the secondary tower, the weight of the primary tower is determined according to the sum of the weights of all the secondary towers in the primary tower, and the weight of all the primary towers is smaller than or equal to the preset weight. The wall thickness is determined according to the load, so that the obtained wall thickness of the tower can bear enough load, the waste of materials can be prevented, the quality of the tower is ensured, and the manufacturing cost of the tower is controlled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural view of a tower provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic structural view of a primary tower provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic flow chart diagram of a tower design method provided by an embodiment of the present application;
FIG. 4 is a schematic flow chart diagram of a tower design method provided in another embodiment of the present application;
FIG. 5 is a schematic structural diagram of a tower design system provided in an embodiment of the present application.
Icon: 1-a tower; 10-a first tower; 20-a flange; 110-a secondary tower; 301-load design module; 302-wall thickness design module; 303-weight design module; 304-taper design module; 305-pitch width design module; 306-diameter design module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Fig. 1 is a schematic structural view of a tower provided in an embodiment of the present application, and fig. 2 is a schematic structural view of a primary tower provided in an embodiment of the present application, where, as shown in fig. 1 and fig. 2, the tower 1 includes at least one segment of the primary tower 10, and each segment of the primary tower 10 includes at least one secondary tower 110.
With reference to fig. 1, due to the requirements of road transportation, manufacturing process, tower strength, and the like, the tower 1 needs to be manufactured into a plurality of sections of first-stage towers 10, and the plurality of sections of first-stage towers 10 are connected by flanges 20.
An alternative method of designing the number of tower sections is given by the height of the tower 1 being H meters and the restricted length in road transport being X h Meter, determining the number of tower sections as n, specifically, if H/X h Is an integer, then n is H/X h A value of (d); if H/X h If not, n is rounded up. For example, according to the height of the tower 1 of 80 meters, the limited length in road transportation is 19 meters, H/X h And if the number of tower sections is 80/19, the number of the tower sections is 5.
And presetting the length of each section of the first-stage tower, wherein the length of each section of the first-stage tower is not more than the longest length specified by road transportation limiting conditions, and the sum of the lengths of each section of the first-stage tower is ensured to be the height of the preset tower. Alternatively, the segment length of each primary tower may be preset according to the number of segments in such a manner that the segment length is divided into 19 meters, 19 meters and 4 meters, or 16 meters, or 19 meters, 14 meters.
It should be noted that the preset segment lengths in this embodiment are only used for illustration, and the distribution manner of the segment lengths is not limited, as long as the segment lengths are not longer than the longest length specified by the road transportation limitation condition, and the sum of the segment lengths of each segment is ensured to be the length distribution manner of the preset height of the tower.
In the tower, the diameter of the first-stage tower is constant or gradually reduced from the first-stage tower at the bottom to the first-stage tower at the top. The diameter of each section of the primary tower comprises a primary bottom diameter and a primary top diameter. When the diameters of the towers are preset, the diameters of the two adjacent sections of the first-stage towers are the same, namely the diameter of the top of one section of the first-stage tower is the same as the diameter of the bottom of the other section of the first-stage tower adjacent to the top of the first-stage tower. Continuing with the example in the above embodiment, optionally, the diameters of the 5-segment tower from the first bottom diameter of the first tower at the bottom to the first top diameter of the first tower at the top may be: 4.3 meters, 4.3 meters 3.8 meters, 3.5 meters, and 3 meters.
It should be noted that the preset first-stage bottom diameter and first-stage top diameter are only used for illustration, and the distribution manner of the first-stage bottom diameter and the first-stage top diameter is not limited, as long as the diameters of two adjacent first-stage towers that are connected are the same.
Optionally, two adjacent first-stage towers are connected by a flange, so that the diameter of the flange is the same as that of the two adjacent first-stage towers. For example, two adjacent primary towers, one having a primary top diameter of 4.3 meters and the other having a primary bottom diameter of 4.3 meters, may have a flange diameter of 4.3 meters.
Fig. 3 is a schematic flow diagram of a tower design method according to an embodiment of the present application, where this embodiment provides a possible implementation manner of tower design, and is applied to design a tower, specifically, as shown in fig. 3, the tower design method includes:
and S101, determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load.
It should be noted that the pitch width of the secondary tower refers to the vertical distance between the upper and lower diameters of the secondary tower.
Alternatively, the reference load may be obtained from the load spectrum, or from the reference tower.
Alternatively, the load of the secondary tower may be determined from the load where the pitch width of the secondary tower occupies the same proportion in the primary tower as in the reference tower. For example, the primary tower is 10 meters and the first secondary tower is 2 meters, i.e., one fifth of the primary tower. And if the reference tower is 5 meters, acquiring the reference load at 5 times of the reference tower, namely the reference load at 1 meter of the reference tower, wherein the reference load is the load of the secondary tower.
And S102, determining the wall thickness of the secondary tower according to the load.
Optionally, an initial wall thickness of the secondary tower may be preset, and the initial wall thickness is adaptively adjusted according to the load size to obtain the wall thickness of the secondary tower, specifically, if the load borne by the initial wall thickness is smaller than the load of the secondary tower, the wall thickness is increased on the basis of the initial wall thickness to obtain the wall thickness of the secondary tower; and if the load borne by the initial wall thickness is larger than that of the secondary tower, reducing the wall thickness on the basis of the initial wall thickness to obtain the wall thickness of the secondary tower.
The wall thickness is determined in dependence on the load, so that the wall thickness is designed to be able to withstand the corresponding load. The method avoids the problems that the wall thickness is too small and the load cannot be met, so that the designed tower is unqualified in quality, avoids the waste of materials due to too large wall thickness, and improves the manufacturing cost of the tower.
It should be noted that, the wall thickness design method of each secondary tower is the same, and when the primary tower includes multiple secondary towers, the wall thickness of each secondary tower needs to be designed.
And S103, determining the weight of the secondary tower according to the pitch width, the wall thickness and the diameter of the secondary tower.
Before step S103, the method further includes: and determining the secondary top diameter of the first section of the secondary tower according to the preset primary bottom diameter, the taper and the section width of the first section of the secondary tower of each section of the primary tower, wherein the secondary top diameter of the first section of the secondary tower is used as the secondary bottom diameter of the second section of the secondary tower. And determining the secondary top diameter of the third section of the secondary tower until determining the secondary bottom diameter of the penultimate section of the secondary tower according to the secondary bottom diameter, the taper and the section width of the second section of the secondary tower.
It should be noted that the top diameter of one section of the secondary tower is calculated, and the bottom diameter of another section of the tower connected to the section of the tower can be determined, and specifically, the calculated secondary top diameter of the first section of the secondary tower is the same as the secondary bottom diameter of the second section of the secondary tower connected to the first section of the secondary tower.
And S104, determining the weight of the primary tower according to the sum of the weights of all the secondary towers, wherein the weight of all the primary towers is less than or equal to the preset weight.
The calculation method of the weight of each section of the first-stage tower is the same and is the sum of the weights of all the secondary towers below the section of the first-stage tower.
Alternatively, the preset weight may be the maximum weight allowed in the road transport specification. And if the weight of all the first-stage towers is less than or equal to the preset weight, the towers are designed to be qualified, and the road transportation requirement is met.
According to the tower design method, the load of the secondary tower is determined according to the pitch width of the secondary tower and the reference load, the wall thickness of the secondary tower is determined according to the load, the weight of the secondary tower is determined according to the pitch width, the wall thickness and the diameter of the secondary tower, the weight of the primary tower is determined according to the sum of the weights of all the secondary towers in the primary tower, and the weight of all the primary towers is smaller than or equal to the preset weight. The wall thickness is determined according to the load, so that the obtained wall thickness of the tower can bear enough load, the waste of materials can be prevented, the quality of the tower is ensured, and the manufacturing cost of the tower is controlled.
Optionally, the diameter of each section of the primary tower includes a primary bottom diameter and a primary top diameter, and before step S101, the method further includes:
s201, determining the taper according to the diameter of the first-stage bottom, the diameter of the first-stage top and the length of the first-stage tower.
Alternatively, the taper may be calculated by the following formula:
wherein, theta is the taper, D1 is the diameter of the first-level bottom, D2 is the diameter of the first-level top, and H is the length of the section.
S202, determining the pitch width of the secondary tower according to the taper, the diameter of the primary bottom and the blanking width of the steel plate.
Wherein, the pitch width can be obtained by the following formula:
wherein h is the pitch width of the secondary tower, d1 is the diameter of the secondary bottom of the secondary tower, and Kn is the blanking width of the steel plate.
It should be noted that, in the towers, the diameter of the first-stage tower is unchanged or gradually decreases from the first-stage tower at the bottom to the first-stage tower at the top, the first-stage secondary tower at the bottom is the first-stage secondary tower, the pitch width from the first-stage secondary tower to the penultimate secondary tower can be obtained through the above formula calculation, and the last-stage secondary tower can be obtained by subtracting the pitch width from the first-stage secondary tower to the penultimate secondary tower from the segment length of the first-stage tower.
In addition, the top diameter of the secondary tower is calculated by the following formula:
d2＝d1-h*tanθ；
wherein d2 is the secondary bottom diameter of the secondary tower, d1 is the secondary bottom diameter of the secondary tower, h is the pitch width of the secondary tower, and θ is the taper.
It should be noted that the secondary bottom diameter of the first section of the secondary tower is the primary bottom diameter, and the secondary bottom diameter of each section of the secondary tower is the secondary top diameter of the adjacent section of the secondary tower. The secondary top diameter of the last secondary tower is the secondary top diameter of the primary tower. The secondary top diameter of the secondary tower is calculated by the above formula, and the calculated secondary top diameter can be used to calculate the pitch width of the next secondary tower. Until the pitch width of each secondary tower in a section of the primary tower is calculated.
With continuing reference to fig. 4, step S102 includes:
s102-1, determining the wall thickness of the secondary tower according to the load and limiting conditions, wherein the limiting conditions comprise an ultimate strength safety factor, and/or a fatigue damage value, and/or a buckling strength safety factor.
The ultimate strength safety factor satisfies the following formula:
wherein SRF is the ultimate strength safety factor, sigma d Designing allowable stress, σ, for tower material eqv Is the equivalent stress.
The tower material design allowable stress satisfies the following formula:
σ d designing allowable stress, σ, for tower materials f Allowing stress, gamma, for the material m The material safety coefficient. Alternatively, γ m The value is 1.1.
The equivalent stress satisfies the following formula:
wherein σ eqv For equivalent stress, M xy Is the resultant bending moment on the tower section, F z Axial loads on tower sections, F xy For resultant shear loads on the tower section, M Z For the torque load on the tower section, W b,h Is the tower flexural section modulus, A h Is the tower cross-sectional area, W t The tower torsional section modulus.
The fatigue damage value satisfies the following formula:
wherein D fatigue damage value, delta sigma i Is the actual stress range of the tower, n i Is Δ σ i Number of cycles of (a) (. Gamma.) M Is a material polynomial coefficient, m is the inverse of the slope of the fatigue life curve of the tower material, N D Number of cycles, delta sigma, corresponding to the knee point of the fatigue life curve of the tower material D And ks is a thickness reduction coefficient.
Wherein the thickness reduction factor satisfies the following formula:
where ks is the thickness reduction factor, t1 is the wall thickness of the secondary tower connected to the secondary bottom diameter of the secondary tower, and t2 is the wall thickness of the secondary tower connected to the secondary top diameter of the secondary tower.
The buckling strength safety coefficient meets the following formula:
wherein B-SRF is the buckling strength safety coefficient sigma x,Ed Critical stress value, σ, for tower axial instability x,Rd As a tower frameCritical stress value, tau, of axial actual instability xθ,Ed Is the critical stress value of tower shear instability, tau xθ,Rd And k chi and k tau are dimensionless parameters and are the critical stress values of the actual instability of the tower during shearing.
When designing the tower, the tower can be designed according to different design standards, for example, in EN1993 specification, requirements on the ultimate strength safety factor, the fatigue damage value, the buckling strength safety factor and the like are required, and when designing the tower, the ultimate strength safety factor, the fatigue damage value, the buckling strength safety factor and the like can be added as limiting conditions for designing. The method is not limited to limiting conditions such as ultimate strength safety factor, fatigue damage value and buckling strength safety factor, and the tower can be designed according to specific limiting conditions in the design standard so as to ensure that the designed tower meets the standard requirement. When the requirements of EN1993 specifications are met, the ultimate strength safety coefficient and the buckling strength safety coefficient are both more than 1, and the fatigue damage value is less than 1.
Optionally, with continued reference to fig. 4, step S103 further includes:
s103-1, determining the weight of the secondary tower according to the section width, the wall thickness, the diameter of the secondary bottom and the diameter of the secondary top.
When a plurality of secondary towers are included in a section of the primary tower, the weight of each secondary tower is calculated.
In fig. 4, after step S103-1, determining the weight of the first-stage tower according to the sum of the weights of all the secondary towers, if the weight of the first-stage tower is greater than the preset weight, it indicates that the designed tower is overweight, the section length of the designed tower needs to be redistributed, the section length of the first-stage tower with the weight greater than the preset weight is reduced, the reduced section length is distributed to another first-stage tower adjacent to the first-stage tower, and after distribution, if the section length of another first-stage tower is greater than the preset section length or the weight is greater than the preset weight, the section length needs to be distributed to the tower connected to another first-stage tower until the weight and section length requirements are met.
And if the weight requirement cannot be met after the distribution according to the mode, reallocating the segment length, specifically, allocating one more segment number on the basis of the original segment number, and then executing the steps in the figure 4 again until the weight requirement is met.
Optionally, the present application further provides a tower design system, configured to perform the above method, and fig. 5 is a schematic structural diagram of the tower design system according to an embodiment of the present application, as shown in fig. 5, where the tower design system includes: a load design module 301, a wall thickness design module 302, and a weight design module 303.
And the load design module 301 is used for determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load.
A wall thickness design module 302 for determining a wall thickness of the secondary tower based on the load.
And the weight design module 303 is used for determining the weight of the secondary tower according to the pitch width, the wall thickness and the diameter of the secondary tower.
The weight design module 303 is further configured to determine the weight of the primary tower according to the sum of the weights of all the secondary towers, where the weight of all the primary towers is less than or equal to a preset weight.
With continued reference to FIG. 5, optionally, the tower design system further comprises: a taper design module 304 and a pitch width design module.
And the taper design module 304 is used for determining the taper according to the diameter of the bottom of the first stage, the diameter of the top of the first stage and the length of the section of the first stage tower.
And the pitch width design module 305 is used for determining the pitch width of the secondary tower according to the taper, the diameter of the primary bottom and the blanking width of the steel plate.
Optionally, the wall thickness design module 302 is specifically configured to determine the wall thickness of the secondary tower according to the load and the limiting conditions, wherein the limiting conditions include an ultimate strength safety factor, and/or a fatigue damage value, and/or a buckling strength safety factor.
With continued reference to FIG. 5, optionally, the tower design system further comprises: a diameter design module 306.
And a diameter design module 306 for determining a secondary top diameter of the first section of the secondary tower according to the predetermined primary bottom diameter, taper and section width of the first section of the primary tower, wherein the secondary top diameter of the first section of the secondary tower is used as the secondary bottom diameter of the second section of the secondary tower. And determining the secondary top diameter of the third section of the secondary tower until determining the secondary bottom diameter of the penultimate section of the secondary tower according to the secondary bottom diameter, the taper and the section width of the second section of the secondary tower.
Optionally, the weight design module is specifically configured to determine the weight of the secondary tower from the pitch width, the wall thickness, the secondary bottom diameter and the secondary top diameter.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
This function, if implemented in the form of a software function module and sold or used as a separate product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A tower design method is used for designing a tower, wherein the tower comprises at least one section of primary tower, and each section of the primary tower comprises at least one section of secondary tower; wherein the diameter of each section of the primary tower comprises a primary bottom diameter and a primary top diameter, the method comprising:
determining the taper according to the diameter of the primary bottom, the diameter of the primary top and the length of the primary tower;
determining the pitch width of the secondary tower according to the taper, the diameter of the primary bottom and the blanking width of the steel plate;
determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load;
determining a wall thickness of the secondary tower from the load;
determining the secondary top diameter of the first section of the secondary tower according to the preset primary bottom diameter, the taper and the section width of the first section of the secondary tower;
determining the secondary top diameter of a third section of secondary tower until determining the secondary bottom diameter of the penultimate section of secondary tower according to the secondary bottom diameter of the second section of secondary tower, the taper and the section width of the second section of secondary tower;
determining the weight of the secondary tower according to the pitch width, the wall thickness and the diameter of the secondary tower;
and determining the weight of the primary tower according to the sum of the weights of all the secondary towers, wherein the weight of all the primary towers is less than or equal to the preset weight.
2. The tower design method of claim 1, wherein said step of determining a wall thickness of said secondary tower from said load comprises:
determining the wall thickness of the secondary tower according to the load and limiting conditions, wherein the limiting conditions comprise an ultimate strength safety factor, and/or a fatigue damage value, and/or a buckling strength safety factor.
3. The tower design method of claim 1, wherein a secondary top diameter of the first section of secondary tower is taken as a secondary bottom diameter of a second section of secondary tower.
4. The tower design method of claim 3, wherein said step of determining a weight of said secondary tower based on said pitch width, said wall thickness and a diameter of said secondary tower comprises:
determining a weight of the secondary tower from the pitch width, the wall thickness, the secondary bottom diameter, and the secondary top diameter.
5. A tower design system, comprising: the device comprises a load design module, a wall thickness design module, a weight design module, a taper design module, a pitch width design module and a diameter design module;
the load design module is used for determining the load of the secondary tower according to the pitch width of the secondary tower and the reference load;
the wall thickness design module is used for determining the wall thickness of the secondary tower according to the load;
the weight design module is used for determining the weight of the secondary tower according to the pitch width, the wall thickness and the diameter of the secondary tower;
the weight design module is also used for determining the weight of the primary tower according to the sum of the weights of all the secondary towers, wherein the weight of all the primary towers is less than or equal to the preset weight, and the diameter of each section of the primary tower comprises a primary bottom diameter and a primary top diameter;
the taper design module is used for determining the taper according to the diameter of the primary bottom, the diameter of the primary top and the length of the primary tower;
the pitch width design module is used for determining the pitch width of the secondary tower according to the taper, the diameter of the primary bottom and the blanking width of a steel plate;
the diameter design module is used for determining the secondary top diameter of the first section of secondary tower according to the preset primary bottom diameter of each section of the primary tower, the taper and the section width of the first section of secondary tower;
and determining the secondary top diameter of the third section of the secondary tower until determining the secondary bottom diameter of the penultimate section of the secondary tower according to the secondary bottom diameter of the second section of the secondary tower, the taper and the section width of the second section of the secondary tower.
6. The tower design system of claim 5, wherein the wall thickness design module is specifically configured to determine the wall thickness of the secondary tower according to the loads and limiting conditions, wherein the limiting conditions comprise an ultimate strength safety factor, and/or a fatigue damage value, and/or a buckling strength safety factor.
7. The tower design system of claim 5, wherein a secondary top diameter of the first section of secondary tower is taken as a secondary bottom diameter of the second section of secondary tower.
8. The tower design system of claim 7, wherein the weight design module is specifically configured to determine the weight of the secondary tower based on the pitch width, the wall thickness, the secondary bottom diameter, and the secondary top diameter.
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