Rapid comparison and selection method for weight and economical efficiency of tower drum

Abstract

The invention belongs to the technical field of wind turbine generator tower drums, and particularly relates to a tower drum weight and economical efficiency rapid comparison and selection method. According to the technical scheme, the tower drum weight and economical efficiency rapid comparison and selection method comprises the following steps that S1, the power and the impeller diameter of a unit are determined according to preconditions, and the air density and the wind speed of a project are determined according to project wind resource parameters; s2, calculating the power of the unit; s3, the diameter of the tower drum is determined according to the on-site road exploration condition, the height of the tower drum is determined according to the project site and the economical efficiency requirement, and the wall thickness of the tower drum is selected according to the IEC standard; s4, determining the weight of the tower drum according to the conditions in the step S3; s5, determining an economic constant according to the comparison and selection scheme condition; s6, calculating a tower drum weight coefficient; and S7, determining the weight of the tower drum design scheme. The invention provides a method for rapidly comparing and selecting tower drum weight and economical efficiency based on wind turbine generator power, impeller diameter, wind parameters, tower drum diameter, tower drum height, tower drum weight and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine towers, and in particular relates to a method for quickly comparing tower weight and economy. Background Art

[0002] As competition in the wind power industry becomes increasingly fierce, the cost-effectiveness of the entire unit determines the competitiveness of the unit in the market. The tower is the most widely used supporting structure type for wind turbines. The rapid and economical design of the tower weight determines the optimal solution for the entire machine. And with the continuous development of wind power industry technology, a rapid design method is also needed to improve the efficiency of tower design to meet market competition needs. Therefore, the tower weight design must ensure safety and reliability, as well as certain economy and design efficiency. The method mentioned in the present invention can achieve rapid, efficient, accurate and economical tower weight design according to specific input conditions. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a method for quickly comparing tower weight and economy based on wind turbine power, impeller diameter, wind parameter, tower diameter, tower height, tower weight, etc.

[0004] The technical solution adopted by the present invention is:

[0005] A tower weight and economic efficiency rapid comparison method comprises the following steps:

[0006] S1: Determine the power and impeller diameter of the unit according to the preconditions, and determine the air density and wind speed of the project according to the project wind resource parameters;

[0007] S2: computer group power;

[0008] S3: Determine the tower diameter based on the on-site road survey, determine the tower height based on the project site and economic requirements, and select the tower wall thickness based on the IEC standard;

[0009] S4: Determine the tower weight according to the conditions of step S3;

[0010] S5: Determine the economic constant based on the selected options;

[0011] S6: Calculate the tower weight coefficient;

[0012] S7: Determine the weight of the tower design.

[0013] By adopting the method of the present invention, the tower weight can be quickly designed according to simple parameter input. The tower weight design can be further guided by comparing the weight coefficients, thereby improving the economy while meeting the safety requirements. At the same time, the method can greatly shorten the tower weight design cycle, avoid a large amount of repeated calculation work in the early stage, reduce design redundancy, and improve work efficiency.

[0014] As a preferred solution of the present invention, in step S2, the unit power is obtained from known parameters through a numerical relationship, or the unit power is obtained according to previous calculations.

[0015] As a preferred solution of the present invention, in step S2, the unit power is obtained by numerical relationship from known parameters, and the unit power is obtained by numerical calculation as follows:

[0016]

[0017] Where, ρ: air density, A: impeller swept area; v: wind speed; C P : Power coefficient.

[0018] As a preferred solution of the present invention, in step S4, the tower weight is determined according to the conditions in step S3, and the approximate parameter relationship is as follows:

[0019] G=πD0tLρ t (2);

[0020] Where D O : tower outer diameter; t: tower wall thickness; L: tower height; ρ t : Tower density.

[0021] As a preferred solution of the present invention, in step S4, the tower weight is obtained according to the design method required by the IEC standard.

[0022] As a preferred solution of the present invention, in step S6, the tower weight coefficient is calculated, and the relationship between the parameters is as follows:

[0023]

[0024] Where, kk: economic constant; D: impeller diameter; σ: tower bending stress.

[0025] The beneficial effects of the present invention are:

[0026] The present invention can quickly design the tower weight according to simple parameter input, and can further guide the tower weight design by comparing weight coefficients, thereby improving economy while meeting safety requirements. At the same time, the method can greatly shorten the tower weight design cycle, avoid a large amount of repeated calculation work in the early stage, reduce design redundancy, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flow chart of the method of the present invention;

[0028] Figure 2 It is a logical relationship diagram of the design parameters of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] like Figure 1 and Figure 2 As shown, the tower weight and economic efficiency rapid comparison method of this embodiment includes the following steps:

[0032] S1: Determine the power and impeller diameter of the unit according to the preconditions, and determine the air density and wind speed of the project according to the project wind resource parameters.

[0033] S2: Computer group power:

[0034] The unit power is obtained by numerical relationship from known parameters, or by previous calculation. The unit power is obtained by numerical relationship from known parameters, and the unit power is obtained by numerical calculation as follows:

[0035]

[0036] Where, ρ: air density, A: impeller swept area; v: wind speed; C P : Power coefficient.

[0037] S3: Determine the tower diameter based on the on-site road survey, determine the tower height based on the project site and economic requirements, and select the tower wall thickness based on IEC standards.

[0038] S4: Determine the tower weight according to the conditions of step S3:

[0039] Determine the tower weight according to the conditions in step S3, and the approximate parameter relationship is as follows:

[0040] G=πD0tLρ t (2);

[0041] Where D O : tower outer diameter; t: tower wall thickness; L: tower height; ρ t : Tower density.

[0042] The tower weight can also be obtained according to the design method required by the IEC standard.

[0043] S5: Determine the economic constant kk based on the selected options, which is related to the selected model.

[0044] S6: Calculate tower weight factor:

[0045] The tower weight coefficient is obtained based on the parameters such as machine power, tower weight, impeller diameter, tower height, tower diameter, etc. The relationship between the parameters is as follows:

[0046]

[0047] Where, kk: economic constant; D: impeller diameter; σ: tower bending stress.

[0048] S7: Determine the weight of the tower design.

[0049] By adopting the method of the present invention, the tower weight can be quickly designed according to simple parameter input. The tower weight design can be further guided by comparing the weight coefficients, thereby improving the economy while meeting the safety requirements. At the same time, the method can greatly shorten the tower weight design cycle, avoid a large amount of repeated calculation work in the early stage, reduce design redundancy, and improve work efficiency.

[0050] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A tower weight and economic efficiency rapid comparison method, characterized by: The following steps are involved: S1: Determine the power and impeller diameter of the unit according to the preconditions, and determine the air density and wind speed of the project according to the project wind resource parameters; S2: computer group power; S3: Determine the tower diameter based on the on-site road survey, determine the tower height based on the project site and economic requirements, and select the tower wall thickness based on the IEC standard; S4: Determine the tower weight according to the conditions of step S3; S5: Determine the economic constant based on the selected options; S6: Calculate the tower weight coefficient; S7: Determine the weight of the tower design.

2. A tower weight and economic efficiency rapid comparison method according to claim 1, characterized in that: In step S2, the unit power is obtained from known parameters through a numerical relationship, or the unit power is obtained according to previous calculations.

3. A tower weight and economic efficiency rapid comparison method according to claim 2, characterized in that: In step S2, the unit power is obtained by numerical relationship from known parameters, and the unit power is obtained by numerical calculation as follows: Where, ρ: air density, A: impeller swept area; v: wind speed; C P : Power coefficient.

4. A tower weight and economic efficiency rapid comparison method according to claim 3, characterized in that: In step S4, the tower weight is determined according to the conditions in step S3, and the approximate parameter relationship is as follows: <h2 style=";text-align:left;direction:ltr">G=πD0tLρ<h2 style=";text-align:left;direction:ltr"> t <h2 style=";text-align:left;direction:ltr"> (2); Where D O : tower outer diameter; t: tower wall thickness; L: tower height; ρ t : Tower density.

5. A tower weight and economic efficiency rapid comparison method according to claim 1, characterized in that: In step S4, the tower weight is obtained according to the design method required by the IEC standard.

6. A tower weight and economic efficiency rapid comparison method according to claim 4, characterized in that: In step S6, the tower weight coefficient is calculated, and the relationship between the parameters is as follows: Where, kk: economic constant; D: impeller diameter; σ: tower bending stress.

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