CN215213771U

CN215213771U - Conversion node of wind generating set and quadrilateral lattice type tower

Info

Publication number: CN215213771U
Application number: CN202023142066.4U
Authority: CN
Inventors: 彭文兵; 王鹏昊; 刘慧群
Original assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Current assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-12-17
Anticipated expiration: 2030-12-21

Abstract

The utility model relates to a conversion node of wind generating set and quadrangle lattice formula pylon, including top flange and the changeover portion of being connected bottom the flange, quadrangle lattice formula pylon is installed to the lower extreme of changeover portion, and the changeover portion passes through butt weld and is connected bottom the flange, and the lower extreme of changeover portion passes through the connecting plate and the high strength bolt is connected with quadrangle lattice formula pylon. Compared with the prior art, the utility model adopts the transition section to connect the wind turbine generator with the quadrilateral lattice tower, and the transition section and the lattice tower are connected by the connecting plate through the high-strength bolt; the transition section is connected with the wind turbine generator through a top flange, and the top flange is connected with the transition section through a butt welding seam; the specific section size of the transition section can be freely adjusted according to the size of the upper fan and the size of the lower quadrilateral lattice tower, and the whole conversion node can provide enough bearing capacity and fatigue life.

Description

Conversion node of wind generating set and quadrilateral lattice type tower

Technical Field

The utility model belongs to the technical field of wind power generation tower lattice formula pylon structure technique and specifically relates to a conversion node of wind generating set and quadrangle lattice formula pylon is related to.

Background

When the wind driven generator is installed, a relatively better and more stable wind condition can be obtained by increasing the height of the hub of the wind driven generator, so that the power production capacity of the wind driven generator can be effectively improved, but if the supporting structure still adopts a single-tube tower drum structure which is widely applied at present, the steel consumption of the supporting structure can be sharply increased particularly after the height of the hub exceeds 100m, and meanwhile, the transportation problem is difficult to solve due to the fact that the diameter of the bottom of the supporting structure is too large.

The quadrilateral lattice tower can save steel consumption and is convenient to transport, and the lattice tower has higher rigidity, can avoid the excitation frequency of a wind wheel and prevent the tower body from being damaged by resonance.

However, the size of the body of the wind turbine generator is set by a fan manufacturer, and the size of the lattice tower needs to meet the requirement of the structural bearing capacity, so that the size requirement, the bearing capacity and the fatigue life of the wind turbine generator cannot be met at the same time when the wind turbine generator and the lattice tower are connected at present, and the normal operation of the wind turbine generator cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a conversion node of wind generating set and quadrangle lattice formula pylon in order to overcome the defect that above-mentioned prior art exists to on the basis that satisfies the size demand, can provide sufficient bearing capacity and fatigue life.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides a conversion node of wind generating set and quadrangle lattice formula pylon, includes top flange and the changeover portion who is connected with top flange bottom, and quadrangle lattice formula pylon is installed to the lower extreme of changeover portion, the changeover portion is connected with top flange bottom through butt weld, the lower extreme of changeover portion passes through the connecting plate and high strength bolt is connected with quadrangle lattice formula pylon.

Further, quadrangle lattice formula pylon is including four horizontal poles that interconnect constitutes first quadrangle in proper order and the king-post that is located four summit positions of first quadrangle, the top of king-post is passed through the connecting plate and the bolt that excels in is connected with the lower extreme of changeover portion, through a horizontal pole and down tube unit interconnect between the adjacent king-post, the both ends of horizontal pole are connected with the top of adjacent king-post respectively, the down tube unit includes two down tubes, and the one end of two down tubes is connected to the bottom of adjacent king-post respectively, and the other end of two down tubes all is connected to the mid point position of same root horizontal pole.

Furthermore, a transverse partition is movably connected between the middle points of the two cross bars which are connected with each other in the four cross bars.

Further, the transverse partitions are movably connected with the cross rods through high-strength bolts.

Furthermore, the tower column is connected with the cross rod through a gusset plate and a high-strength bolt, the tower column is connected with the inclined rod through a gusset plate and a high-strength bolt, and the inclined rod is connected with the cross rod through a gusset plate and a high-strength bolt.

Furthermore, the connecting plate is V-shaped, the lower half corner of the connecting plate is inserted into the top of the tower column, and the upper half flat plate part of the connecting plate is tightly attached to the transition section.

Furthermore, the upper half flat plate part of the connecting plate is connected with a bending part, and the bending part is tightly attached and connected with the transition section.

Further, the top flange is specifically a lateral thick cast flange.

Further, the transition section is specifically a circular tube with a diameter gradually reduced along with the height and a constant thickness.

Furthermore, four grooves are formed in the lower end of the transition section, and the positions of the four grooves correspond to the central axes of the four tower columns.

Compared with the prior art, the utility model discloses a changeover portion links to each other wind turbine generator system with quadrangle lattice formula pylon, the changeover portion passes through top flange and links to each other with wind turbine generator system, adopt the connecting plate to pass through high strength bolt connection between changeover portion and the quadrangle lattice formula pylon, adopt butt weld to connect between top flange and the changeover portion, utilize the changeover portion to transmit fan load to the pylon structure of lower part, combine the structural design of quadrangle lattice formula pylon, can ensure sufficient bearing capacity, the concrete cross sectional dimension of changeover portion can carry out free adjustment according to upper portion fan size and lower part quadrangle lattice formula pylon size;

the utility model provides a conversion node adopts high strength bolt to accomplish the friction joint between each part, and the welding volume is less, and adopts butt weld mode, and the fatigue resistance after the mill is flat can be higher to this can improve fatigue life.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic view of the quadrilateral lattice tower structure of the present invention;

FIG. 5 is a schematic view of a connection structure of a transition section and a top flange;

wherein: 1. top flange, 2, transition section, 3, connecting plate, 4, high-strength bolt, 5, tower column, 6, cross rod, 7, transverse partition, 8, diagonal rod, 9 and gusset plate.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example (b):

as shown in fig. 1 to 3, a conversion node of a wind turbine generator set and a quadrilateral lattice tower comprises a top flange 1 at the upper part, a transition section 2 at the middle part, and a quadrilateral lattice tower at the lower part, wherein: the top flange 1 is used for connecting the wind generating set at the upper part with the transition section 2 through a high-strength bolt 4;

the transition section 2 is a circular tube structure with a diameter gradually reduced along with the height and a constant thickness.

As shown in fig. 4, the quadrilateral lattice tower comprises four tower columns 5, four cross bars 6, four transverse partitions 7, eight diagonal bars 8 and gusset plates 9, the four tower columns 5 are four, the cross bars 6 are four, the transverse partitions 7 are four, the diagonal bars 8 are eight, the four cross bars 6 are sequentially connected to form a quadrilateral, the four tower columns 5 are correspondingly positioned at the vertex of the quadrilateral, the tops of the adjacent tower columns 5 are connected with each other through one cross bar 6, the two diagonal bars 8 form a diagonal bar unit, one end of the diagonal bar unit is connected with the tower column 5 through the gusset plate 9, the other end of the diagonal bar unit is connected with the cross bar 6 through the gusset plate 9, namely, adjacent tower columns 5 are connected through a diagonal rod unit, one end of one diagonal rod 8 in the diagonal rod unit is connected to the middle point position of the cross rod 6, the other end of the diagonal member 8 is connected to the bottom of the tower 5, wherein the gusset plate 9 has different sizes according to the type of the connecting member.

The middle points of two connected cross rods 6 are respectively movably connected with two ends of a transverse diaphragm 7, the four transverse diaphragms 7 are connected to form a quadrilateral structure, the transverse diaphragms 7 are directly connected with the cross rods 6 by high-strength bolts 4, the tower column 5 is connected with the cross rods 6 and the inclined rods 8, and the cross rods 6 and the inclined rods 8 are connected with the high-strength bolts 4 through joint plates 9.

The quadrilateral lattice type tower frame is connected with the transition section 2 through four connecting plates 3, the connecting plate 3 is in a V-like shape, the lower half corner of the V-like shape is connected with a tower column 5 through a high-strength bolt 4, the upper half part of the V-like shape is bent to enable the radian of the V-like shape to be the same as that of the transition section 2, and the V-like shape can be tightly attached to the transition section 2 and connected through the high-strength bolt 4.

As shown in FIG. 5, the junction of the transition section 2 and the top flange 1 is connected by butt weld, and four grooves are formed at the positions of the bottom of the transition section 2 opposite to the central axes of the four towers 5, so that a space can be provided for construction and installation. The size of the section of the transition section 2 can be changed according to the size of the upper wind turbine generator and the quadrilateral lattice tower.

In practical application, the top flange 1 is a transverse thick cast flange, in the manufacturing process, the top flange 1 and the transition section 2 are connected in a factory by butt welding, and other parts are also processed in the factory in advance;

in the installation process, the transition section 2 (comprising the top flange 1) and the top section of the quadrilateral lattice tower (comprising the tower column 5, the cross rod 6, the transverse partition 7, the inclined rod 8 and the node plate 9) are connected with the high-strength bolt 4 through the connecting plate 3 to form a whole, and the whole is directly hoisted to a specified position to be connected with the lower section of the quadrilateral lattice tower, so that the installation is completed.

The utility model adopts the transition section to connect the wind turbine generator with the quadrilateral lattice tower, and the transition section and the lattice tower are connected by a connecting plate through a high-strength bolt; the transition section is connected with the wind turbine generator through a top flange, and the top flange is connected with the transition section through a butt welding seam; the specific section size of the transition section can be freely adjusted according to the size of the upper fan and the size of the lower quadrilateral lattice tower, and the method has strong applicability.

Most of the conversion nodes are in friction connection through high-strength bolts, the welding amount is small, all welding seams are butt welding seams, and the anti-fatigue performance is high after the conversion nodes are ground flat.

Claims

1. The utility model provides a conversion node of wind generating set and quadrangle lattice formula pylon which characterized in that, includes top flange (1) and changeover portion (2) of being connected bottom top flange (1), and quadrangle lattice formula pylon is installed to the lower extreme of changeover portion (2), changeover portion (2) are connected bottom top flange (1) through butt weld, the lower extreme of changeover portion (2) is passed through connecting plate (3) and high strength bolt (4) and is connected with quadrangle lattice formula pylon.

2. A wind park and quadrilateral lattice tower transition node according to claim 1, it is characterized in that the quadrilateral lattice tower comprises four cross bars (6) which are sequentially connected with each other to form a first quadrilateral and tower columns (5) which are positioned at the four vertexes of the first quadrilateral, the top of the tower columns (5) is connected with the lower end of the transition section (2) through a connecting plate (3) and a high-strength bolt (4), the adjacent tower columns (5) are connected with each other through a cross rod (6) and an inclined rod (8), the two ends of the cross rod (6) are respectively connected with the tops of the adjacent tower columns (5), the inclined rod (8) unit comprises two inclined rods (8), one ends of the two inclined rods (8) are connected to the bottoms of the adjacent tower columns (5) respectively, and the other ends of the two inclined rods (8) are connected to the middle point of the same transverse rod (6).

3. The conversion node of a wind power plant and a quadrilateral lattice tower according to claim 2, characterized in that a transverse partition (7) is movably connected between the midpoint positions of two cross bars (6) connected to each other among the four cross bars (6).

4. A wind power plant and quadrilateral lattice tower transition node according to claim 3 characterized in that the said crosspieces (7) are articulated with the cross bars (6) by means of high-strength bolts (4).

5. The conversion node of a wind generating set and a quadrilateral lattice tower according to claim 2, wherein the tower columns (5) and the cross bars (6) are connected with each other through node plates (9) and high-strength bolts (4), the tower columns (5) and the diagonal rods (8) are connected with each other through the node plates (9) and the high-strength bolts (4), and the diagonal rods (8) and the cross bars (6) are connected with each other through the node plates (9) and the high-strength bolts (4).

6. The conversion node of a wind generating set and a quadrilateral lattice tower according to claim 2, wherein the connecting plate (3) is shaped like a V, the lower half corner of the connecting plate (3) is inserted into the top of the tower column (5), and the upper half flat plate part of the connecting plate (3) is tightly attached to the transition section (2).

7. The transition joint of a wind generating set and a quadrilateral lattice tower according to claim 6, wherein the upper half flat plate part of the connecting plate (3) is connected with a bent part, and the bent part is closely attached and connected with the transition section (2).

8. A wind park and quadrilateral lattice tower transition node according to claim 1, characterized in that the top flange (1) is embodied as a laterally thick cast flange.

9. The conversion node of a wind park and a quadrilateral lattice tower according to claim 2, characterized in that the transition section (2) is embodied as a circular tube with a diameter that gradually decreases with height and a constant thickness.

10. The wind power plant and the quadrilateral lattice tower transition node according to claim 9, wherein the lower end of the transition section (2) is provided with four grooves, the four grooves corresponding to the central axes of the four towers (5).