CN217602843U

CN217602843U - Tower barrel structure of wind driven generator

Info

Publication number: CN217602843U
Application number: CN202221403485.5U
Authority: CN
Inventors: 卢丽霞; 阮春
Original assignee: NANJING WIND POWER TECHNOLOGY CO LTD
Current assignee: NANJING WIND POWER TECHNOLOGY CO LTD
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-10-18
Anticipated expiration: 2032-06-07

Abstract

The utility model relates to a tower drum structure of a wind driven generator, which comprises a tower drum main body and a bottom flange welded at the opening at the bottom of the tower drum main body, wherein one side of the bottom of the tower drum main body is provided with a door opening; a plurality of reinforcing components which are uniformly distributed at equal angles along the circumferential direction are arranged between the inner wall or the outer wall of the tower drum main body and the bottom flange, and each reinforcing component comprises at least two rib plates which are fixed on the inner wall or the outer wall of the tower drum main body and are sequentially arranged, an end plate fixed between the tops of the rib plates and a bottom plate fixed between the bottoms of the rib plates; the inner side edge of the end plate is fixed on the inner wall or the outer wall of the tower drum main body, and the bottom plate is detachably fixed on the top of the bottom flange; the utility model discloses weaken a tower section of thick bamboo main part and welding seam fatigue damage between end flange by a wide margin to both reduced manufacturing cost, reduced installation cost again.

Description

Tower drum structure of wind driven generator

Technical Field

The utility model relates to a tower cylinder structure of aerogenerator.

Background

At present, the wind generating set is developing towards the direction of large-scale, and the increase of the length of the blade and the height of the tower barrel is accompanied, so that the load born by the tower barrel in the wind generating set is correspondingly increased, and higher requirements are provided for the strength of a connecting welding seam between the tower barrel and a bottom flange.

Due to the irregular shapes of the bottom flange structure and the door opening on the tower drum, the stress state between the tower drum and the bottom flange is relatively complex, and the two inevitably generate large hot spot stress at the position of a welding seam; in order to ensure the service life of the wind generating set, the conventional method is to increase the height of the bottom flange, increase the thicknesses of the bottom flange and the tower barrel or move the position of the door opening upwards so as to reduce hot spot stress and weaken the fatigue damage of a welding seam, but the manufacturing cost is increased, the height of a ladder required by the door opening is increased, the installation cost is increased, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that an effective joint strength who has strengthened between tower section of thick bamboo main part and the end flange is in order to weaken the welding seam fatigue damage between tower section of thick bamboo main part and end flange by a wide margin is provided to both reduced manufacturing cost, reduced installation cost's aerogenerator's a tower section of thick bamboo structure again.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a tower cylinder structure of a wind driven generator comprises a tower cylinder main body and a bottom flange welded at an opening at the bottom of the tower cylinder main body, wherein a door opening is formed in one side of the bottom of the tower cylinder main body; the inner side edge of the end plate is fixed on the inner wall or the outer wall of the tower drum main body, and the bottom plate is detachably fixed on the top of the bottom flange.

Preferably, at least two studs are inserted between the bottom plate and the bottom flange, a nut is screwed on the upper end of each stud, and each nut is tightly pressed on the top of the bottom plate to fix the bottom plate on the top of the bottom flange.

Compared with the prior art, the utility model has the advantages of: the utility model discloses with the help of a plurality of reinforcement assembly effectually strengthened the joint strength between tower section of thick bamboo main part and the end flange in order to weaken the welding seam fatigue damage between tower section of thick bamboo main part and end flange by a wide margin, need not to increase the height of end flange, increase the thickness of end flange and tower section of thick bamboo main part or move on the position of door opening to both reduced manufacturing cost, reduced installation cost again.

Drawings

FIG. 1 is a view showing a structure of a top side of the present invention;

fig. 2 is a partial enlarged structural view of the present invention at a.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1-2, a tower cylinder structure of a wind driven generator comprises a tower cylinder main body 3 and a bottom flange 1 welded at an opening at the bottom of the tower cylinder main body 3, wherein a door opening 4 is formed at one side of the bottom of the tower cylinder main body 3; a plurality of reinforcing components 2 which are uniformly distributed at equal angles along the circumferential direction are further arranged between the bottom flange 1 and the inner wall or the outer wall of the tower drum main body 3, and each reinforcing component 2 comprises at least two rib plates 22 which are fixed on the inner wall or the outer wall of the tower drum main body 3 and are sequentially arranged, an end plate 23 fixed between the tops of each rib plate 22, and a bottom plate 21 fixed between the bottoms of each rib plate 22; the inner side edge of the end plate 23 is fixed on the inner wall or the outer wall of the tower main body 3, and the bottom plate 21 is detachably fixed on the top of the bottom flange 1.

Two studs 24 are further arranged between the bottom plate 21 and the bottom flange 1 in an at least inserting mode, a nut 25 is further sleeved and screwed at the upper end of each stud 24, and each nut 25 is tightly pressed on the top of the bottom plate 21 to fix the bottom plate 21 on the top of the bottom flange 1.

The working principle is as follows:

a plurality of reinforcement assembly 2 can be effectual share the load that 3 bottoms of tower section of thick bamboo main part bore, and then reduce the fatigue damage of the welding seam between tower section of thick bamboo main part 3 and the end flange 1, and then strengthened the joint strength between tower section of thick bamboo main part 3 and the end flange 1.

The utility model discloses with the help of a plurality of 2 effectual strengthens the joint strength between tower section of thick bamboo main part 3 and the end flange 1 in order to weaken the welding seam fatigue damage between tower section of thick bamboo main part 3 and end flange 1 by a wide margin, need not to increase end flange 1's height, increase end flange 1 and tower section of thick bamboo main part 3's thickness or move up the position of door opening 4 to both reduced manufacturing cost, reduced installation cost again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tower cylinder structure of a wind driven generator comprises a tower cylinder main body and a bottom flange welded at an opening at the bottom of the tower cylinder main body, wherein a door opening is formed in one side of the bottom of the tower cylinder main body; the inner side edge of the end plate is fixed on the inner wall or the outer wall of the tower drum main body, and the bottom plate is detachably fixed on the top of the bottom flange.

2. The tower cylinder structure of the wind driven generator as claimed in claim 1, wherein at least two studs are inserted between the bottom plate and the bottom flange, a nut is screwed on an upper end of each stud, and each nut is tightly pressed on the top of the bottom plate to fix the bottom plate on the top of the bottom flange.