Prestressed frame type steel pipe wind power tower positioning tool and inclined foundation structure system

Abstract

The application discloses the technical field of wind power tower and relates to a prestressed frame type steel pipe wind power tower positioning tool and an inclined foundation structure system. The prestressed frame type steel pipe wind power tower positioning tool comprises a top fixing device, a bottom fixing device, a supporting device and a centripetal positioning device. The top fixing device is arranged at the top of the supporting device. The bottom fixing device is arranged at the bottom of the supporting device. The included angle between the top fixing device and the horizontal plane is 9-11 degrees. The lowest point of the top fixing device is provided with the centripetal positioning device. In the inclined foundation structure system, the inclined foundation anchor bolt is vertically fixed to the top fixing device of the prestressed frame type steel pipe wind power tower positioning tool through the bottom flange of the foundation framework. The prestressed frame type steel pipe wind power tower positioning tool is used for processing and manufacturing the inclined angle in the factory, which facilitates the foundation construction and saves a large amount of labor and mechanical equipment cost.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine tower technology, and specifically relates to a positioning fixture and inclined foundation structure system for a prestressed frame steel pipe wind turbine tower. Background Technology

[0002] Currently, traditional wind turbine towers are single-tube structures with ordinary foundations perpendicular to the ground. They are simple in structure, use a large amount of concrete, occupy a large area, are not environmentally friendly, cannot be prestressed, and cannot be heightened further.

[0003] With the development of tall steel structures and wind turbine towers, many wind turbine towers, especially those in wind turbines, have adopted frame-type steel structure towers to improve the utilization rate of lower materials and overall rigidity, addressing the significant fatigue effects under wind loads and mechanical operation. However, steel structure fatigue remains a limiting factor for the full utilization of structural materials. To improve material utilization, prestressed frame-type tower structures ensure that the steel pipe columns are always under compression under normal operating conditions. Except in extreme weather conditions, no tensile stress occurs within the steel pipe columns, which can suppress the development of micro and macro cracks, prevent fatigue failure, and extend the fatigue life of the steel pipe columns. Currently, internal prestressing is generally used to keep the steel pipe columns under compression under normal operating conditions. However, internal prestressing requires cables or anchors to be threaded inside the steel pipe columns, making construction and installation cumbersome.

[0004] In particular, the embedded parts of the tower foundation of prestressed steel pipe wind turbine towers have a required tilt angle. If the angle is adjusted on the installation site, it will not only require a lot of equipment, but also be time-consuming and labor-intensive. If the angle has an uncontrollable error, there will be a great risk. Summary of the Invention

[0005] To address the above issues, this invention proposes to develop a prestressed frame steel pipe wind turbine tower positioning fixture and inclined foundation structure system.

[0006] A positioning fixture for a prestressed frame steel pipe wind turbine tower includes a top fixing device, a bottom fixing device, a support device, and a centripetal positioning device. The top fixing device is installed on the top of the support device, and the bottom fixing device is installed on the bottom of the support device. The angle between the top fixing device and the horizontal plane is 9°-11°. The bottom fixing device is parallel to the horizontal plane. The centripetal positioning device is provided at the lowest point of the top fixing device.

[0007] Furthermore, the top fixing device is a top fixing circular steel plate.

[0008] Furthermore, the bottom fixing device is a bottom-fixing cross-shaped angle steel.

[0009] Furthermore, the angle between the top fixing device and the horizontal plane is 10.813°, and the angle between the top fixing device and the vertical plane is 79.187°.

[0010] Furthermore, the centripetal positioning device is a centripetal positioning angle steel.

[0011] Furthermore, the supporting device is a supporting steel pipe.

[0012] Furthermore, the supporting steel pipe includes an upper supporting steel pipe, a middle supporting steel pipe, and a lower supporting steel pipe, and the top fixing device and the bottom fixing device are connected sequentially through the upper supporting steel pipe, the middle supporting steel pipe, and the lower supporting steel pipe according to the inclination angle.

[0013] An inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture includes the prestressed frame steel pipe wind turbine tower positioning fixture, a bottom flange of the foundation frame, and inclined foundation anchor bolts. The inclined foundation anchor bolts are vertically fixed to the top fixing device of the prestressed frame steel pipe wind turbine tower positioning fixture through the bottom flange of the foundation frame.

[0014] The beneficial effects achieved by this invention are as follows:

[0015] The positioning fixture for prestressed steel pipe wind turbine towers is manufactured in the factory with its tilt angle precisely adjusted. This ensures that the four corners of the tower foundation's embedded components have a uniform tilt angle, facilitating foundation construction and tower installation. It also eliminates the need for on-site tilt adjustments, saving significant labor and machinery costs. By effectively aligning the foundation tilt with the tower's main column, prestressed structures can be applied inside the steel pipes of the main column. This allows the tower to accommodate unlimited increases in height with current hoisting equipment, thereby increasing power generation. Attached Figure Description

[0016] Figure 1 Front view of the positioning fixture for a prestressed frame steel pipe wind turbine tower;

[0017] Figure 2 A top view of the positioning fixture for a prestressed frame steel pipe wind turbine tower;

[0018] Figure 3 A top view of the bottom flange of the basic frame;

[0019] Figure 4 A structural schematic diagram of the application of a prestressed frame steel pipe wind turbine tower positioning fixture in an inclined foundation structure system.

[0020] The attached figures are labeled as follows:

[0021] 1. Top fixed circular steel plate, 2. Upper support steel pipe, 3. Middle support steel pipe, 4. Lower support steel pipe, 5. Bottom flange of foundation frame, 6. Bottom fixed cross-shaped angle steel, 7. Centripetal positioning angle steel, 8. Inclined foundation anchor bolt, 9. Reinforced concrete, 10. Prestressed frame steel pipe wind turbine tower positioning fixture. Detailed Implementation

[0022] Example 1

[0023] like Figure 1-4 A positioning fixture for a prestressed frame steel pipe wind turbine tower includes a top fixed circular steel plate 1, a bottom fixed cross-shaped angle steel 6, an upper support steel pipe 2, two middle support steel pipes 3, a lower support steel pipe 4, and a centripetal positioning angle steel 7. The angle between the top fixed circular steel plate 1 and the horizontal plane is 10.813°, and the angle between it and the vertical plane is 79.187°. The bottom fixed cross-shaped angle steel 6 is parallel to the horizontal plane. The lowest point of the top fixed circular steel plate 1 is provided with the centripetal positioning angle steel 7. The top fixed circular steel plate 1 and the bottom fixed cross-shaped angle steel 6 are connected sequentially through an upper support steel pipe 2, two middle support steel pipes 3, and a lower support steel pipe 4 according to their inclination angles.

[0024] The diameter of the top fixed circular steel plate 1 is 1250mm, the height of the upper supporting steel pipe 2 is 434.5mm, the height of the middle supporting steel pipe 3 is 322.4mm, and the height of the lower supporting steel pipe 4 is 211.4mm.

[0025] The inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture 10 includes the prestressed frame steel pipe wind turbine tower positioning fixture 10, the bottom flange 5 of the foundation frame, and the inclined foundation anchor bolts 8. The inclined foundation anchor bolts 8 are vertically fixed to the top fixing circle steel plate 1 of the prestressed frame steel pipe wind turbine tower positioning fixture 10 through the bottom flange 5 of the foundation frame.

[0026] After the inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture 10 is installed in the predetermined position, it is then fixed with reinforced concrete 9.

[0027] Example 2

[0028] like Figure 1-4A positioning fixture for a prestressed frame steel pipe wind turbine tower includes a top fixed circular steel plate 1, a bottom fixed cross-shaped angle steel 6, an upper support steel pipe 2, a middle support steel pipe 3, a lower support steel pipe 4, and a centripetal positioning angle steel 7. The angle between the top fixed circular steel plate 1 and the horizontal plane is 9°. The bottom fixed cross-shaped angle steel 6 is parallel to the horizontal plane. The lowest point of the top fixed circular steel plate 1 is provided with the centripetal positioning angle steel 7. The top fixed circular steel plate 1 and the bottom fixed cross-shaped angle steel 6 are connected sequentially through the upper support steel pipe 2, the middle support steel pipe 3, and the lower support steel pipe 4 according to their inclination angles.

[0029] The inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture 10 includes the prestressed frame steel pipe wind turbine tower positioning fixture 10, the bottom flange 5 of the foundation frame, and the inclined foundation anchor bolts 8. The inclined foundation anchor bolts 8 are vertically fixed to the top fixing circle steel plate 1 of the prestressed frame steel pipe wind turbine tower positioning fixture 10 through the bottom flange 5 of the foundation frame.

[0030] After the inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture 10 is installed in the predetermined position, it is then fixed with reinforced concrete 9.

[0031] Example 3

[0032] like Figure 1-4 A positioning fixture for a prestressed frame steel pipe wind turbine tower includes a top fixed circular steel plate 1, a bottom fixed cross-shaped angle steel 6, an upper support steel pipe 2, a middle support steel pipe 3, a lower support steel pipe 4, and a centripetal positioning angle steel 7. The angle between the top fixed circular steel plate 1 and the horizontal plane is 11°. The bottom fixed cross-shaped angle steel 6 is parallel to the horizontal plane. The lowest point of the top fixed circular steel plate 1 is provided with the centripetal positioning angle steel 7. The top fixed circular steel plate 1 and the bottom fixed cross-shaped angle steel 6 are connected sequentially through the upper support steel pipe 2, the middle support steel pipe 3, and the lower support steel pipe 4 according to their inclination angles.

[0033] The inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture 10 includes the prestressed frame steel pipe wind turbine tower positioning fixture 10, the bottom flange 5 of the foundation frame, and the inclined foundation anchor bolts 8. The inclined foundation anchor bolts 8 are vertically fixed to the top fixing circle steel plate 1 of the prestressed frame steel pipe wind turbine tower positioning fixture 10 through the bottom flange 5 of the foundation frame.

[0034] After the inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture 10 is installed in the predetermined position, it is then fixed with reinforced concrete 9.

Claims

1. An inclined foundation structure system containing a prestressed frame-type steel pipe wind turbine tower positioning fixture, characterized in that: The equipment includes a prestressed frame steel pipe wind turbine tower positioning fixture, a bottom flange of the foundation frame, and inclined foundation anchor bolts. The inclined foundation anchor bolts are vertically fixed to the top fixing device of the prestressed frame steel pipe wind turbine tower positioning fixture through the bottom flange of the foundation frame. The positioning fixture for the prestressed frame steel pipe wind turbine tower includes a top fixing device, a bottom fixing device, a support device, and a centripetal positioning device. The top fixing device is installed on the top of the support device, and the bottom fixing device is installed on the bottom of the support device. The angle between the top fixing device and the horizontal plane is 9°-11°. The bottom fixing device is parallel to the horizontal plane. The lowest point of the top fixing device is provided with a centripetal positioning device. The bottom fixing device is a bottom-fixing cross-shaped angle steel; The supporting device is a supporting steel pipe, which includes an upper supporting steel pipe, a middle supporting steel pipe, and a lower supporting steel pipe. The top fixing device and the bottom fixing device are connected sequentially through the upper supporting steel pipe, the middle supporting steel pipe, and the lower supporting steel pipe according to the inclination angle. After the inclined foundation structure system containing the prestressed frame steel pipe wind turbine tower positioning fixture is installed in the predetermined position, it is then fixed with reinforced concrete.

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