Barrel section of barrel-shaped tower with biomimetic structure

Abstract

The utility model discloses a cylindrical section structure of a cylindrical tower with a biomimetic structure. The cylindrical section is composed of a biomimetic cylindrical section shell 1, a biomimetic ring 2 and a biomimetic groove 3. The bionic shell section shell is a cylindrical body, annular end faces are formed at the two ends of the bionic shell section shell, and the bionic groove is formed in the bionic shell section shell and connected to the annular end faces of the upper portion and the bottom of the bionic shell section shell and the wall portion of the bionic shell section shell. And the bionic ring is arranged in an inner cavity of the bionic shell section shell and is connected with the bionic groove. Compared with the existing cylindrical section with the same boundary dimension, the cylindrical section of the biomimetic structure cylindrical tower has the advantages that materials can be saved, and the investment cost of the cylindrical tower is reduced; the section shape and the internal size of the cylindrical section of the cylindrical tower are different from the shape and the internal size of the cylindrical section of the existing cylindrical tower; due to different inertia moments, the stability of the cylindrical tower can be greatly improved, the rigidity of the tower is multiplied, and the waist folding phenomenon of the cylindrical tower can be well prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power towers, in particular to a cylinder section of a cylindrical tower with a biomimetic structure. Background Art

[0002] In the description of this utility model, the terms are standardized according to the national standard NB / T31001-2010. Cylinder segment refers to a single part rolled from steel plate into a cylindrical or conical shape. Cylinder body refers to a component welded together by cylinder segment, flange and other parts. Cylinder tower refers to the whole assembly of all cylinder bodies and accessories above the foundation ring and below the yaw slewing support. Foundation ring refers to the supporting component of the tower body buried in the foundation concrete. Cylindrical tower refers to the tower body and foundation ring.

[0003] At present, the processing of wind turbine cylinders generally involves CNC cutting and blanking, beveling of thick plates, plate rolling and forming by plate rolling machine, spot welding and positioning, and then welding of internal and external longitudinal gaps after confirmation; then roundness inspection is carried out, and those that do not meet the requirements need to be rounded twice; after the cylinder section is welded, the hydraulic group is used to assemble the roller frame for spot welding, and then the internal and external annular seams are welded; after the straightness and other tolerance inspections are qualified, the flanges are welded. Then the welds are non-destructive testing and flatness inspections are carried out; after passing the inspections, sandblasting and painting are carried out; and the installation of internal accessories is completed; the finished products are transported to the site for installation only after they have passed the inspections.

[0004] At present, there is a phenomenon that the wind power cylindrical tower is bent in actual use, which shows that the current wind power cylindrical tower structure has the problem of poor stability and insufficient rigidity. The market also needs to reduce the construction cost of wind power towers. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a cylindrical section of a biomimetic structure cylindrical tower, which is assembled into a biomimetic structure cylindrical tower to solve the problem of increasing waist-breaking hidden dangers of cylindrical towers in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cylinder section of a biomimetic cylindrical tower is composed of a biomimetic cylinder section shell, a biomimetic ring and a biomimetic groove; the biomimetic cylinder section shell is a cylindrical body, and annular end faces are formed at the upper and lower ends of the biomimetic cylinder section shell; more than two biomimetic grooves are arranged inside the biomimetic cylinder section shell, and the biomimetic grooves are connected to the inner walls of the annular end faces at the top and bottom of the biomimetic cylinder section shell and the wall of the biomimetic cylinder section shell, and the directions of the biomimetic grooves are perpendicular to the horizontal plane; the biomimetic ring is arranged in the internal cavity of the biomimetic cylinder section shell and connected to the biomimetic grooves.

[0008] An annular protrusion is formed on the bionic cylinder segment shell.

[0009] The protrusion is arranged horizontally.

[0010] There are several protrusions.

[0011] A plurality of bionic rings are provided.

[0012] The bionic ring is made of channel steel.

[0013] There are no less than two bionic grooves.

[0014] The bionic grooves are arranged at equal intervals.

[0015] The outer diameter of the upper end of the bionic barrel segment shell is equal to the outer diameter of the lower end and is cylindrical, or the outer diameter of the upper end is smaller than the outer diameter of the lower end and is conical.

[0016] The beneficial effects obtained by the utility model are:

[0017] The utility model discloses a cylinder section of a biomimetic structure cylinder tower, which can greatly improve the problem of poor stability, insufficient rigidity and easy waist bending of the wind power cylinder tower in the background technology. At the same time, compared with the cylinder section with the same external dimensions, the utility model can save the amount of steel used and greatly reduce the investment cost of the cylinder tower; the reason is that the cylinder section of the biomimetic structure of the utility model has the same external dimensions as the cylinder section of the current cylinder tower. Under the same design conditions, the thickness of the material used for the cylinder section of the biomimetic structure of the utility model is reduced by half compared with the thickness of the cylinder section material of the current cylinder tower, which can greatly reduce the amount of steel used and reduce the investment cost; in addition, the cross-sectional shape of the cylinder section of the biomimetic structure of the utility model is different from that of the cylinder section of the existing cylinder tower. After calculation, the inertia moment of the cylinder section of the biomimetic cylinder tower of the utility model is doubled compared with the inertia moment of the cylinder section of the current cylinder tower, thereby reducing the deformation deflection of the cylinder tower, that is, under the same force condition, the deformation of the biomimetic structure cylinder tower of the utility model is much smaller than that of the existing cylinder tower. Therefore, the biomimetic structure cylindrical tower of the utility model has good stability and rigidity and is not prone to waist bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a cylinder section of a biomimetic structure cylinder tower of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the bionic tube segment shell.

[0020] Figure 3 It is a schematic diagram of the structure of the bionic ring.

[0021] Figure 4 It is a structural schematic diagram of the bionic trough.

[0022] Figure 5 It is a schematic diagram with dimensions of a section of a cylinder section structure used in the prior art.

[0023] Figure 6 It is a schematic diagram with dimensions of a section of a biomimetic structure cylinder.

[0024] In the figure, there are a bionic cylinder segment shell 1, a bionic ring 2, and a bionic groove 3. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0026] The cylinder section of the biomimetic cylindrical tower of the utility model is composed of a biomimetic cylinder section shell, a biomimetic ring and a biomimetic groove. The biomimetic cylinder section shell is a cylindrical body, and an annular end surface is formed at both ends of the biomimetic cylinder section shell. The biomimetic groove is arranged inside the biomimetic cylinder section shell and connected to the annular end surfaces at the top and bottom of the biomimetic cylinder section shell and the biomimetic cylinder section shell wall; the biomimetic ring is arranged in the internal cavity of the biomimetic cylinder section shell and connected to the biomimetic groove.

[0027] The bionic barrel segment shell can be cylindrical with the same size at the upper and lower ends, or can be configured to be small at the upper part and large at the lower part to be conical. The outer side of the bionic barrel segment shell is provided with a protrusion, which is arranged horizontally.

[0028] The bionic ring is made of channel steel. The combination of the bionic ring and the bionic cylinder segment shell enhances the bionic cylinder segment shell's ability to resist deformation, thereby ensuring the stability of the bionic cylindrical tower and having sufficient rigidity to resist waist bending.

[0029] The bionic groove is arranged in the bionic barrel segment shell and is connected to the annular end surfaces of the upper and bottom parts of the bionic barrel segment shell and the wall part of the bionic barrel segment shell, so as to make the bionic barrel segment shell more stable.

[0030] The production of the bionic structure cylinder is not much different from the production of the existing cylindrical tower cylinder. Flanges are welded at both ends, and then the upper and lower bionic structure cylinders are fixed together with flanges through bolts and nuts, and the bionic structure cylindrical tower is built in sequence.

[0031] In order to illustrate that the moment of inertia of the cylinder section of the biomimetic cylindrical tower of the utility model can be increased exponentially compared with the moment of inertia of the cylinder section of the existing cylindrical tower, the moments of inertia of the two cylinder sections are calculated theoretically. Figure 5 , Figure 6 As shown, in order to simplify the calculation and facilitate comparison, both methods use cylinder sections with the same upper and lower dimensions and consistent outer dimensions for calculation.

[0032] 1. If Figure 5 It is shown that the moment of inertia of the cylindrical tower currently used is calculated as follows:

[0033]

[0034] Where I 圆is the moment of inertia of the cylindrical tower in the prior art, D is the outer diameter, and d is the inner diameter. Figure 5 As shown, take D as 4700mm, d as 4592mm, and material thickness as 54mm for calculation. Then I 圆 =21258*10 8 .

[0035] 2. If Figure 6 The inertia moment of the cylinder section of the biomimetic cylindrical tower of the utility model is shown in the figure. Since this is a brand-new structure, there is no ready-made calculation formula, and the empirical formula is used for calculation:

[0036]

[0037] In the formula, I 仿 is the inertia moment of the cylinder section of the biomimetic cylindrical tower of the utility model, and k is the empirical coefficient, which is between 0.1 and 1. 仿 is the outer diameter, d 仿 is the inner diameter. Figure 6 As shown, take D 仿 Same as D, both are 4700mm. Due to the addition of annular end faces and bionic rings on the upper and bottom of the bionic cylinder segment, d 仿 Much smaller than d, take d 仿 is 3900mm, and the material thickness is 27mm. When the bionic grooves are set to 8 equally spaced grooves and there are 2 bionic rings, k is taken as 0.4, then I 仿 =50362*10 8 It can be seen that I 仿 isI 圆 The more the number of bionic grooves and bionic rings is, the greater the value of k is. The calculation results show that the utility model can greatly improve the moment of inertia of the cylindrical tower section.

[0038] It should be noted that the above calculation process is only to illustrate that the moment of inertia of the utility model can achieve better results while reducing the amount of steel used, and it is not a limitation on the size of the utility model. It should be understood that the structure adopting the utility model is within the protection scope of the utility model.

Claims

1. A cylindrical section of a biomimetic cylindrical tower, characterized in that: It consists of a bionic barrel segment shell, a bionic ring and a bionic groove; the bionic barrel segment shell is a cylindrical body, and annular end faces are formed at the upper and lower ends of the bionic barrel segment shell; more than two bionic grooves are arranged inside the bionic barrel segment shell, and the bionic grooves are connected to the inner walls of the annular end faces at the top and bottom of the bionic barrel segment shell and the wall of the bionic barrel segment shell, and the direction of the bionic grooves is perpendicular to the horizontal plane; the bionic ring is arranged in the internal cavity of the bionic barrel segment shell and connected to the bionic grooves.

2. The cylinder section of the biomimetic structure cylindrical tower according to claim 1, characterized in that: An annular protrusion is formed on the bionic cylinder segment shell.

3. The cylinder section of the biomimetic structure cylindrical tower according to claim 2, characterized in that: The protrusion is arranged horizontally.

4. The cylinder section of the biomimetic structure cylindrical tower according to claim 2, characterized in that: There are several protrusions.

5. The cylinder section of the biomimetic structure cylindrical tower according to claim 1, characterized in that: A plurality of bionic rings are provided.

6. The cylinder section of the biomimetic structure cylindrical tower according to claim 1, characterized in that: The bionic ring is made of channel steel.

7. The cylinder section of the biomimetic structure cylindrical tower according to claim 1, characterized in that: There are no less than two bionic grooves.

8. The cylinder section of the biomimetic structure cylindrical tower according to claim 1, characterized in that: The bionic grooves are arranged at equal intervals.

9. The cylinder section of the biomimetic structure cylindrical tower according to claim 1, characterized in that: The outer diameter of the upper end of the bionic barrel segment shell is equal to the outer diameter of the lower end and is cylindrical, or the outer diameter of the upper end is smaller than the outer diameter of the lower end and is conical.

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