CN212563531U

CN212563531U - Device for connecting and supporting structure of tower of multi-impeller wind power system

Info

Publication number: CN212563531U
Application number: CN202020810837.3U
Authority: CN
Inventors: 崔逸南; 崔新维
Original assignee: Beijing Sanli Xinneng Science & Technology Co ltd
Current assignee: Beijing Sanli Xinneng Science & Technology Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-02-19
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a many impeller wind power system's pylon hookup bearing structure's device, it includes: front struts, rear struts, coupling members and support structures. A plurality of small units of the multi-impeller wind power generation system are fixed on a supporting structure, and the supporting structure is a space frame structure and is fixedly connected with the tower through a connecting part. The supporting structure is positioned between the front pillar and the rear pillar, and the four pillars, the connecting part and the bottom slewing bearing form a quadrangular frustum pyramid shape.

Description

Device for connecting and supporting structure of tower of multi-impeller wind power system

Technical Field

The utility model belongs to the technical field of wind power generation, in particular to many impeller wind power system's pylon hookup bearing structure's device.

Background

The development of wind power is the most effective way to solve the problem of unit development cost. The continuous development of offshore wind power projects makes the unit become a necessary development trend in large-scale. With the increase of the capacity of the unit, the development of the traditional wind turbine with a single impeller has more and more serious challenges, the load of the unit is increased sharply, and the overlong and overweight blades and the overlarge torque bring a lot of problems to the design, production, manufacture, installation and the like of each part (such as a variable pitch actuating mechanism, a supporting structure and the like) in the unit.

A multi-impeller wind power system is a system for realizing conversion from wind energy to electric energy by mounting a plurality of impellers in the same supporting structure. Compared with a traditional wind power system with a single impeller, the multi-impeller wind power system does not need to use ultra-long and ultra-heavy blades, avoids the occurrence of ultra-large torque, and provides a feasible way for enlarging the wind power unit and reducing the development cost of the unit. Similar to the traditional single-impeller wind turbine generator, the size of the impeller and the height of the supporting structure of the multi-impeller wind turbine system are gradually increased along with the enlargement of the generator. The consequence of the high tower is that the tower bottom needs to carry a great load, the diameter of the tower needs to be large enough to increase the load carrying capacity, and the cost increase resulting from this adjustment of the tower is unacceptable. The multi-rotor (multi-impeller) wind power generation system mentioned in the utility model CN 205533018U, CN 108368821A, CN 102269113 a still uses a tower support type used by the traditional single-impeller wind power generation unit, and when the unit capacity increases, the tower still causes the unit cost to rise sharply.

Disclosure of Invention

The utility model aims at providing a many impeller wind power system's pylon hookup bearing structure's device does benefit to bearing structure's arrangement, reduces the moment of flexure load that the pylon received to reduce the cost of pylon.

To achieve the above object, the present invention provides a device for connecting a tower to a supporting structure of a wind power system with multiple impellers, comprising: front pillar (101), rear pillar (102), coupling part (200), bearing structure (300).

The front strut (101) and the rear strut (102) are each composed of two struts, and the cross section of the struts can be circular or other shapes. The upper ends of the front support (101) and the rear support (102) are fixedly connected with the connecting component (200), and one or more groups of the connecting components (200) can be provided. The small multi-row unit (400) of the multi-impeller wind power generation system is fixed on a supporting structure (300), and the supporting structure (300) is a space frame structure and is fixedly connected with a tower support through a connecting part (200). The coupling position of the coupling component (200) and the supporting structure (300) is not lower than the height of the small unit (400) arranged in the lowest row on the space frame structure of the supporting structure (300).

Two struts of the front strut (101) are located in front of the windward side of the support structure (300), and two struts of the rear strut (102) are located behind the leeward side of the support structure (300). The supporting structure (300) is positioned between the front support (101) and the rear support (102), and the four supports, the connecting part (200) and the bottom slewing bearing (600) form a quadrangular frustum pyramid shape. The lower end of the tower column is coupled to a slewing bearing (600) at the bottom of the overall system.

The included angles between the front supporting column (101) and the plane of the slewing bearing (600) and the included angles between the rear supporting column (102) and the plane of the slewing bearing (600) are all smaller than 90 degrees. The front support (101), the rear support (102), the coupling part (200), the supporting structure (300) and all the small units (400) are driven by a yaw system to yaw together to face the wind.

The beneficial effects of the utility model are embodied in: the angle between the support column of the tower and the plane of the slewing bearing (600) is smaller than 90 degrees in front of and behind (the wind direction) the connecting parts (200) through one or more groups of connecting parts (200). The arrangement of the supporting structure (300) of the multi-impeller wind power system is facilitated, the bending moment load of the tower can be reduced, and the cost of the tower is reduced.

Drawings

Fig. 1 is a front view of a device for connecting a tower to a support structure of a wind turbine system.

Fig. 2 is a side view of a tower connection support structure of a wind turbine system.

Fig. 3 is a top view of a tower connection support structure of a wind turbine system.

In the figure, 101-front strut, 102-rear strut, 200-coupling component, 300-supporting structure, 400-small unit, 501/502-angle of strut and bottom plane, 600-slewing bearing.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

The support structure (300) in fig. 1 is a space frame structure, and a plurality of small units (400) can be arranged in each row of the support structure (300). The support structure (300) is coupled to the tower post by means of a coupling member (200).

As shown in fig. 1, the front pillar (101) is composed of two pillars, the upper ends of the pillars are connected with the front part of the connecting component (200), two groups of the connecting components (200) are provided, and two positions of the upper ends of the front pillars (101) are connected with the connecting component (200).

Further, the rear pillar (102) is composed of two pillars, the upper ends of the pillars are connected with the rear part of the connecting component (200), as shown in fig. 2, there are two groups of the connecting components (200), and there are two positions where the upper ends of the rear pillars (102) are connected with the connecting components (200).

Further, in fig. 1 and 2, the height of the joint of the front pillar (101), the rear pillar (102) and the coupling part (200) is not lower than the height of the lowest row of small units (400) of the support structure (300).

The front support (101), the rear support (102), the slewing bearing (600) and the connecting component (200) form a quadrangular frustum pyramid shape. The shape structure is characterized in that the supporting structure (300) is clamped between the front support (101) and the rear support (102) through the front support (101), the rear support (102) and the connecting component (200).

As shown in fig. 2, the included angles α (501) and β (502) between the front support column (101) and the rear support column (102) and the plane of the slewing bearing (600) are both smaller than 90 °.

As shown in fig. 3, the slewing bearing (600) can realize yawing motions for the front support column (101), the rear support column (102), the coupling member (200), the support structure (300) and all the small units (400) through a driving device.

The tower connecting support structure device has the advantages that the tower support columns are mainly subjected to compression or tension load along the axial direction of the tower, so that the bending moment load of the front support columns (101) and the rear support columns (102) is small, and the cost of the tower is reduced.

The foregoing merely illustrates the preferred embodiments of the principles of the invention and is not intended to limit the same in any way. It is specifically stated that modifications and improvements by those skilled in the art may be made without departing from the principles, structures, and methods of the present invention, which are within the scope of the appended claims.

Claims

1. A device for connecting a tower frame of a multi-impeller wind power system with a supporting structure is characterized in that: the device comprises a front support (101), a rear support (102), a connecting component (200) and a supporting structure (300), wherein the front support (101) and the rear support (102) are respectively composed of two supports, the cross section of each support can be circular or rectangular, the upper ends of the front support (101) and the rear support (102) are fixedly connected with the connecting component (200), the connecting component (200) can be provided with one or more groups, a plurality of rows of small units (400) of the multi-impeller wind power generation system are fixed on the supporting structure (300), the supporting structure (300) is a space frame structure and is fixedly connected with a tower support through the connecting component (200), and the connecting position of the connecting component (200) and the supporting structure (300) is not lower than the height of the minimum row of small units (400) arranged on the space frame structure of the supporting structure (300).

2. The apparatus of claim 1, wherein the tower support structure of the wind turbine generator system comprises: two struts of the front strut (101) are positioned in front of the windward side of the supporting structure (300), two struts of the rear strut (102) are positioned behind the leeward side of the supporting structure (300), the supporting structure (300) is positioned between the front strut (101) and the rear strut (102), the four struts, the connecting component (200) and the bottom slewing bearing (600) form a quadrangular frustum shape, and the lower end of the tower strut is connected with the slewing bearing (600) positioned at the bottom of the whole system.

3. An apparatus for connecting a tower to a support structure of a wind turbine system according to claim 2, wherein: the included angles of the front strut (101), the rear strut (102) and the plane of the slewing bearing (600) are all smaller than 90 degrees, and the front strut (101), the rear strut (102), the connecting part (200), the supporting structure (300) and all the small units (400) are driven by a yaw system to yaw together to face the wind.