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CN-224228783-U - Transition structure and wind power generation device

CN224228783UCN 224228783 UCN224228783 UCN 224228783UCN-224228783-U

Abstract

The application discloses a transition structure and a wind power generation device. Wherein, transition structure includes linkage segment, support column and truss string on, and the linkage segment is equipped with first connecting portion, and first connecting portion is suitable for and is connected with the steel section, and a plurality of support columns set up along the bottom annular interval of linkage segment, and the top of support column is connected with the bottom of linkage segment, and the bottom of support column is equipped with the second connecting portion, and the second connecting portion is suitable for and is connected with the lattice section, and truss string on encircles the surface setting of linkage segment and is connected with the linkage segment, and is connected with the support column. According to the technical scheme provided by the application, the load born by the transition structure can be uniformly dispersed, the stress concentration and local buckling risk are effectively avoided, and the use requirement of the large-load working condition of the large-scale fan is met.

Inventors

  • CHENG RUI
  • HAN JUNHAO
  • LIU BING

Assignees

  • 远景能源有限公司

Dates

Publication Date
20260512
Application Date
20250609

Claims (16)

  1. 1. A transition structure, comprising: -a connection section (100) provided with a first connection portion (110), said first connection portion (110) being adapted to be connected with a steel section; the support columns (200) are annularly arranged at intervals along the bottom of the connecting section (100), the tops of the support columns (200) are connected with the bottom of the connecting section (100), the bottoms of the support columns (200) are provided with second connecting parts (210), and the second connecting parts (210) are suitable for being connected with the lattice sections; And a truss upper chord (300) which is arranged around the outer surface of the connecting section (100), is connected with the connecting section (100), and is connected with the support column (200).
  2. 2. The transition structure according to claim 1, wherein the truss upper chord (300) comprises a plurality of upper chord sections (310) arranged at intervals, the upper chord sections (310) are arranged between two adjacent support columns (200), the outer wall surfaces of the upper chord sections (310) are connected with the connecting sections (100), and two ends of the upper chord sections (310) are respectively connected with two adjacent support columns (200).
  3. 3. The transition structure of claim 2, wherein the connection section (100) is annular and the connection section (100) has an inner side wall surface (120) and an outer side wall surface (130); The upper chord section (310) comprises a first reinforcing pipe (311) and a second reinforcing pipe (312) which are oppositely arranged, wherein the outer wall surface of the first reinforcing pipe (311) is connected with the inner wall surface (120), and the outer wall surface of the second reinforcing pipe (312) is connected with the outer side wall surface (130).
  4. 4. A transition structure according to claim 3, characterized in that the transition structure further comprises a truss lower chord (400), the truss lower chord (400) being connected with the support column (200); along the height direction of the support column (200), the truss lower chord (400) and the truss upper chord (300) are arranged at intervals, and the truss lower chord (400) is arranged below the truss upper chord (300).
  5. 5. The transition structure according to claim 4, wherein the truss lower chord (400) comprises a plurality of lower chord sections (410) arranged at intervals, the lower chord sections (410) are arranged in one-to-one correspondence with the upper chord sections (310), and two ends of the lower chord sections (410) are respectively connected with two adjacent support columns (200).
  6. 6. The transition structure of claim 4, further comprising a plurality of spaced apart vertical web members (500), wherein the vertical web members (500) are disposed between the truss upper chord (300) and the truss lower chord (400), and wherein two ends of the vertical web members (500) are connected to the truss upper chord (300) and the truss lower chord (400), respectively.
  7. 7. The transition structure according to claim 6, characterized in that a groove (510) corresponding to the connection section (100) is provided at the top of the vertical web member (500), and the vertical web member (500) is connected to the connection section (100) by being embedded into the bottom of the connection section (100) through the groove (510).
  8. 8. The transition structure according to any one of claims 4 to 7, characterized in that a slot (220) corresponding to the connection section (100) is provided at the top of the support column (200), and the support column (200) is connected to the connection section (100) by being embedded into the bottom of the connection section (100) through the slot (220).
  9. 9. The transition structure according to any one of claims 4 to 7, characterized in that the support column (200) comprises a coaxially arranged first support section (230) and a second support section (240), the first support section (230) being provided in plurality, adjacent two first support sections (230) being connected by the second support section (240); the wall thickness of the first support section (230) is greater than that of the second support section (240), and the truss upper chord (300) and the truss lower chord (400) are both connected with the first support section (230) of the support column (200).
  10. 10. The transition structure according to claim 9, wherein at least one first reinforcing plate (231) is provided on an inner wall surface of the first support section (230), and the first reinforcing plate (231) is provided corresponding to the truss upper chord (300) and the truss lower chord (400).
  11. 11. The transition structure according to any one of claims 4 to 7, characterized in that a mounting cavity (250) is provided in the support column (200) for penetration of a tendon, the mounting cavity (250) extending in the height direction of the support column (200); The top of support column (200) is equipped with connecting plate (260), install mounting groove (261) on connecting plate (260), mounting groove (261) are suitable for the one end of fixed prestressing tendons.
  12. 12. The transition structure according to claim 6, wherein second reinforcing plates (320) are provided on inner wall surfaces of the truss upper chord (300) and the truss lower chord (400), and the second reinforcing plates (320) are provided corresponding to the vertical web members (500).
  13. 13. The transition structure according to any one of claims 1 to 7, characterized in that the connection section (100) comprises a first connection body (140) and a second connection body (150) arranged symmetrically, the first connection body (140) being detachably connected with the second connection body (150).
  14. 14. The transition structure according to any one of claims 1 to 7, characterized in that the first connection portion (110) and the second connection portion (210) are both connection flanges.
  15. 15. The transition structure according to any one of claims 4 to 7, further comprising a plurality of spaced apart gusset plates (600), one end of the gusset plates (600) being connected to the support columns (200) and the truss downchord (400) and the other end being adapted for connection to a lattice section.
  16. 16. A wind power generation apparatus, comprising: a steel section; A lattice section; The transition structure of any one of claims 1 to 15, being connected to the steel section by the first connection (110), the transition structure being connected to the lattice section by the second connection (210).

Description

Transition structure and wind power generation device Technical Field The application relates to the technical field of wind power generation, in particular to a transition structure and a wind power generation device. Background In the field of wind power generation, the transition section of the lattice tower is used for connecting an upper steel section and a lower lattice section, and is a key structure for ensuring stable load transmission. In the prior art, as the bottom of the steel section is a closed ring, the top of the lattice section is a punctiform supporting structure, the transition structure not only needs to meet the requirement of safely transferring the load at the bottom of the steel section to the lower lattice section, but also needs to meet the transition from the closed ring to the punctiform supporting structure in shape. However, the existing transition structure is easy to generate local buckling under the working condition of large load due to uneven stress distribution, and is difficult to meet the increasing bearing requirement of a large fan. Disclosure of utility model The application aims to provide a transition structure and a wind power generation device, which can uniformly disperse load born by the transition structure, effectively avoid stress concentration and local buckling risk and meet the use requirement of large-load working conditions of a large-scale fan. In a first aspect, the present utility model provides a transition structure comprising: the connecting section is provided with a first connecting part which is suitable for being connected with the steel section; The support columns are annularly arranged at intervals along the bottom of the connecting section, the tops of the support columns are connected with the bottom of the connecting section, the bottoms of the support columns are provided with second connecting parts, and the second connecting parts are suitable for being connected with the lattice section; And the truss is wound up, arranged around the outer surface of the connecting section, connected with the connecting section and connected with the supporting column. The transition structure has the beneficial effects that in the installation process, the transition structure is connected with the steel section through the first connecting part of the connecting section and is fixed with the lattice section through the second connecting part at the bottom of the supporting column, so that the form transition from the steel section closed circular ring structure to the lattice section punctiform supporting structure is realized, and the connection smoothness and firm connection of the upper part and the lower part are ensured. When the steel section transfers load to the connecting section of the transition structure, a plurality of support columns are arranged at the bottom of the connecting section at intervals, part of the load can be directly dispersed to each support column at the connecting position and transferred to the lattice section, and meanwhile, the connecting section can transfer the other part of the load to the truss upper chord arranged around the outer surface of the connecting section at the non-connecting position of the connecting section and the support columns, and then the load is dispersed to each support column through the truss upper chord. The load borne by the connecting section can be uniformly dispersed in the force transmission mode, so that stress concentration and local buckling risks are effectively avoided, the use requirement of large-load working conditions of the large-scale fan is met, the integral rigidity and stability of the transition structure are enhanced, and the structural integrity and the tower operation safety of the transition structure under a complex stress environment are ensured. In addition, the transition structure adopts the modular design that connecting section, support column and truss string are combined, compares in traditional integrated into one piece structure, need not complicated integral processing technology, and each part can be prefabricated independently, is showing and is reducing processing degree of difficulty and cost. During transportation, each component can be disassembled for transportation, the whole transportation width is effectively reduced, the limit of the road transportation size (such as the limit of the conventional ultra-limit width) is broken through, and the components are quickly assembled through standardized nodes after being transported to the site, so that the problem of inconvenient transportation of the traditional structure is solved, and the construction efficiency is improved. In an optional embodiment, the truss upper chord includes a plurality of upper chord sections arranged at intervals, the upper chord sections are arranged between two adjacent support columns, the outer wall surface of the upper chord section is connected with the connecti