Ground power generation equipment foundation for high-altitude wind energy

Abstract

A ground power generation equipment foundation for high-altitude wind energy comprises a reinforced concrete foundation body, the whole reinforced concrete foundation body is in a rectangular block shape, and the bottom of the reinforced concrete foundation body is arranged on a foundation bearing layer; the ground power generation equipment mounting steel plate is arranged at the top of the reinforced concrete foundation body and is used for arranging and fixing the whole ground power generation equipment; wherein secondary grouting layers are arranged among the ground power generation equipment mounting steel plate, the reinforced concrete foundation body and the ground power generation equipment, and meanwhile, the ground power generation equipment mounting steel plate is connected with the reinforced concrete foundation body through a plurality of reserved anchoring assemblies. The device can make up for the blank of foundation design of generator equipment in a high-altitude wind power generation technology scientific research project, can ensure safety, reliability, stability and smoothness of equipment installation, and can take convenience and economy of construction into account.

Description

Technical Field

[0001] The invention relates to the technical field of high-altitude wind power generation, and in particular to a ground power generation equipment foundation for high-altitude wind energy. Background Art

[0002] The umbrella-ladder combined land-based high-altitude wind power generation technology, as a new technology for the large-scale development and utilization of high-altitude wind resources, places the generator on the ground and generates electricity through the up and down reciprocating motion of the "umbrella group".

[0003] In the parachute-ladder combined land-based high-altitude wind power generation technology, the design of the power generation equipment foundation not only involves the stability of the ground equipment, but also the safety and efficiency of the entire system. Therefore, the ground power generation equipment foundation of high-altitude wind energy is the most important part of the high-altitude wind power generation project and the key to the realization of the high-altitude wind power generation project. However, in the current related technologies, there is a lack of specific design of the ground power generation equipment foundation of high-altitude wind energy.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention proposes a ground power generation equipment foundation for high-altitude wind energy, which can fill the gap in the design of the generator equipment foundation in the high-altitude wind energy power generation technology scientific research project, ensure the safety, reliability, stability and flatness of the equipment installation, and take into account the convenience and economy of construction.

[0006] A ground power generation equipment foundation for high-altitude wind energy according to the present invention comprises:

[0007] The reinforced concrete foundation body is in the shape of a rectangular block as a whole, and its bottom is set on the foundation bearing layer;

[0008] The ground power generation equipment installation steel plate is arranged on the top of the reinforced concrete foundation body and is used to arrange and fix the entire ground power generation equipment;

[0009] Among them, a secondary grouting layer is arranged between the ground power generation equipment installation steel plate, the reinforced concrete foundation body and the ground power generation equipment. At the same time, the ground power generation equipment installation steel plate and the reinforced concrete foundation body are connected by a number of reserved anchor components.

[0010] According to some embodiments of the present invention, the reserved anchoring assembly includes reserved anchor holes opened on the ground power generation equipment installation steel plate and reserved anchors, reserved steel meshes and reserved anchor plates arranged in the reinforced concrete foundation body, the lower ends of each group of reserved anchors are connected to a corresponding reserved anchor plate through corresponding nuts, the upper ends of each group of reserved anchors pass through a corresponding group of reserved anchor holes and are fixedly connected through corresponding double nuts and leveling nuts arranged on the upper and lower parts of the ground power generation equipment installation steel plate; multiple reserved steel meshes are vertically layered in the reinforced concrete foundation body and are longitudinally penetrated by all the reserved anchors; reserved grouting holes for secondary grouting after leveling are also opened on the ground power generation equipment installation steel plate.

[0011] According to some embodiments of the present invention, the reserved steel mesh includes a first group of reserved steel mesh and a second group of reserved steel mesh arranged alternately up and down, and the steel bar spacing of the first group of reserved steel mesh is smaller than the steel bar spacing of the second group of reserved steel mesh.

[0012] According to some embodiments of the present invention, the ground power generation equipment mounting steel plates include a cable storage winch base mounting steel plate, a tensioning device base mounting steel plate, a winch drum base mounting steel plate, and a motor base and reduction box base mounting steel plate. The cable storage winch base mounting steel plate and the tensioning device base mounting steel plate are symmetrically arranged on the upper surface of the reinforced concrete foundation body, the winch drum base mounting steel plate is arranged in the middle surface of the reinforced concrete foundation body, and the motor base and reduction box base mounting steel plate is arranged in the lower surface of the reinforced concrete foundation body; the ground power generation equipment mounting steel plates are configured as special-shaped steel plates compatible with the corresponding ground power generation equipment.

[0013] According to some embodiments of the present invention, two embedded parts are symmetrically arranged at two corners on one side of the rope outlet direction of the winch drum base mounting steel plate, each of the embedded parts is composed of anchor bars and shear keys, and a first hidden column is arranged correspondingly at the lower end of each embedded part; a second hidden column is arranged respectively at the lower end of each group of reserved anchor bolts located at the tail of the winch drum base mounting steel plate.

[0014] According to some embodiments of the present invention, two cable channel openings for connecting to the cable trench in the factory area are symmetrically provided on the reinforced concrete foundation body corresponding to both sides of the motor base and the reduction box base mounting steel plate;

[0015] A control box base opening is arranged on the reinforced concrete foundation body corresponding to the outer side of the cable storage winch base installation steel plate, and two control box base installation channel steels are symmetrically arranged on the reinforced concrete foundation body on both sides of the control box base opening.

[0016] According to some embodiments of the present invention, the reinforced concrete foundation body is configured as a reinforced concrete flat slab raft foundation, and the reinforced concrete flat slab raft foundation includes an underground raft foundation part and an above-ground raft foundation part where concrete is poured at one time.

[0017] According to some embodiments of the present invention, the plane size of the reinforced concrete flat raft foundation is 15mx7.6m, the thickness of the underground part of the raft foundation is 1.2m, and the thickness of the above-ground part of the raft foundation is 0.22m.

[0018] According to the present invention, a ground power generation equipment foundation for high-altitude wind energy can utilize a combined design of a reinforced concrete foundation body, a ground power generation equipment installation steel plate, a secondary grouting layer, and a reserved anchor assembly, so that the foundation has a large horizontal force, which can ensure the safe, reliable, stable, and flat installation of the equipment, and become the first ground power generation equipment foundation for high-altitude wind energy.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 The plan views of some embodiments of the foundation of the ground power generation equipment for high-altitude wind energy according to the present invention are shown.

[0022] Figure 2 for Figure 1 Cross-section view at AA in the middle.

[0023] Figure 3 for Figure 2 A partial enlarged view of point C in the middle.

[0024] Figure 4 for Figure 1 Cross-section view at BB.

[0025] Figure 5 for Figure 4 A partial enlarged view of point D in the middle.

[0026] Figure 6 It is a schematic structural diagram of some embodiments of the reserved anchoring components in the foundation of the ground power generation equipment for high-altitude wind energy according to the present invention.

[0027] Meaning of reference numerals in the figure:

[0028] 1- Reinforced concrete foundation body;

[0029] 11- Underground part of raft foundation;

[0030] 12- Above ground part of raft foundation;

[0031] 13-Cable channel opening;

[0032] 14-Opening hole at the base of the control box;

[0033] 15-Control box base installation channel steel;

[0034] 2-Steel plates for installing ground power generation equipment;

[0035] 21- Cable storage winch base installation steel plate;

[0036] 22-Tensioning device base installation steel plate;

[0037] 23- winch drum base installation steel plate; 231- embedded parts; 232- first hidden column; 233- second hidden column;

[0038] 24-Motor base and reduction box base installation steel plate;

[0039] 3-Pre-reserved anchoring assembly;

[0040] 31-reserved anchor hole; 311-nut; 312-double nut; 313-leveling nut;

[0041] 32-reserved anchor bolts;

[0042] 33-reserved steel mesh; 331-first group of reserved steel mesh; 332-second group of reserved steel mesh;

[0043] 34-reserved anchor plate;

[0044] 35- reserved grouting holes;

[0045] 4-Secondary grouting layer;

[0046] 5- Ground power generation equipment;

[0047] 51-equipment bottom plate;

[0048] 6- Foundation bearing layer;

[0049] 61-Foundation cushion. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0051] According to the following Figure 1-Figure 6 The foundation of the ground power generation equipment for high-altitude wind energy of the present invention is described in detail.

[0052] Please refer to Figure 1-6 A ground power generation equipment foundation for high-altitude wind energy provided by an embodiment of the present invention includes a reinforced concrete foundation body 1 and a ground power generation equipment installation steel plate 2, wherein the reinforced concrete foundation body 1 is in a rectangular block shape as a whole, and its bottom is arranged on the foundation bearing layer 6, and the ground power generation equipment installation steel plate 2 is arranged on the top of the reinforced concrete foundation body 1, and is used to arrange and fix the entire ground power generation equipment 5; wherein a secondary grouting layer 4 is arranged between the ground power generation equipment installation steel plate 2, the reinforced concrete foundation body 1 and the ground power generation equipment 5, and at the same time, the ground power generation equipment installation steel plate 2 and the reinforced concrete foundation body 1 are connected by a plurality of reserved anchor components 3.

[0053] Specifically, the ground power generation equipment 5 can be mainly composed of a cable storage winch, a tensioning device, a base of a winch, a motor, a reduction box and a control box. During installation, the ground power generation equipment 5 can be connected to the corresponding installation steel plate through the equipment bottom plate 51 of each component equipment.

[0054] The secondary grouting layer 4 is used to level the ground power generation equipment installation steel plate 2 and fill the bottom of the ground power generation equipment installation steel plate 2 to bear the equipment foundation weight and equipment load. Furthermore, through the leveling nut 313, the flatness of the ground power generation equipment installation steel plate 2 can meet the equipment installation flatness and force requirements of the equipment manufacturer.

[0055] In the embodiment of the present invention, refer to Figure 6 , Figure 3 , Figure 5 The reserved anchor assembly 3 includes a reserved anchor hole 31 opened on the ground power generation equipment installation steel plate 2 and a reserved anchor 32, a reserved steel mesh 33 and a reserved anchor plate 34 arranged in the reinforced concrete foundation body 1. The lower end of each group of reserved anchors 32 is connected to a corresponding reserved anchor plate 34 through a corresponding nut 311, and the upper end of each group of reserved anchors 32 passes through a corresponding group of reserved anchor holes 31 and is fixedly connected through corresponding double nuts 312 and leveling nuts 313 arranged on the upper and lower parts of the ground power generation equipment installation steel plate 2; multiple reserved steel meshes 33 are arranged vertically in layers in the reinforced concrete foundation body 1 and are longitudinally penetrated by all the reserved anchors 32; the ground power generation equipment installation steel plate 2 is also provided with a reserved grouting hole 35 for secondary grouting after leveling.

[0056] Regarding the reserved anchor bolts 32, high-strength anchor bolts are required. Specifically, a group of reserved anchor bolt holes 31 can be composed of two or four high-strength anchor bolts. However, the "Steel Structure Design Manual" (Fourth Edition) only stipulates the selection regulations for Q235 and Q345 steel anchor bolts (that is, the style, anchoring length and force of the anchor bolts, etc.), and the domestic specifications or standards for the requirements of high-strength anchor bolts have not made clear provisions. The applicant used ANSYS WORKBENCH 2020 to numerically simulate the coupling of the M24 anchor bolts of the cable storage winch equipment base, the M36 anchor bolts of the winch drum base, and the M48 anchor bolts of the transformer base with the winch foundation concrete. The bolts should meet the bearing capacity limit and normal use limit under the given tensile force. The calculation and analysis are carried out under the specified design load to obtain the anchoring length requirements of the economic anchor bolts and verify their strength.

[0057] There is a large tensile stress in the main stress range of the reserved anchor bolt 32. The combination of the reserved steel mesh 33 and the reserved anchor plate 34 can increase the ability of the concrete in this stress range to resist the tensile stress and increase the reliability of the structure.

[0058] The applicant has found that the failure mode of anchor plate type anchor bolts tends to be concrete cone-shaped cracking failure, and the angle between the cone failure surface generatrix and the horizontal plane increases with the anchoring depth of the anchor bolt. And with the increase of anchoring depth, the stress gradually decreases; and when concrete cracking occurs, the stress concentration of the concrete near the screw is more obvious, and the stress distribution is an inverted cone. Therefore, it is concluded that the preferred design of the reserved steel mesh 33 at the reserved anchor bolt 32 is a style of unequal diameter and unequal spacing. Refer to Figure 6 Exemplarily, the reserved steel mesh 33 of the embodiment of the present invention includes a first group of reserved steel meshes 33133 and a second group of reserved steel meshes 33233 which are staggered up and down, and the steel bar spacing of the first group of reserved steel meshes 33133 is smaller than the steel bar spacing of the second group of reserved steel meshes 33233.

[0059] The reserved anchor assembly 3 is set according to the equipment installation requirements, and the ground power generation equipment installation steel plate 2 is set to assist the reserved anchor bolt 32 in positioning while ensuring flatness. Since the positioning and installation height of the reserved anchor assembly 3 require high precision, by setting the ground power generation equipment installation steel plate 2, the bolt group opening of the equipment bottom plate 51 and the reserved anchor assembly 3 can be accurately positioned, and the elevation of the ground power generation equipment installation steel plate 2 can meet the elevation requirements of the equipment bottom plate 51.

[0060] In the embodiment of the present invention, refer to Figure 1The ground power generation equipment mounting steel plate 2 includes a cable storage winch base mounting steel plate 21, a tensioning device base mounting steel plate 22, a winch drum base mounting steel plate 23 and a motor base and reduction box base mounting steel plate 24. The cable storage winch base mounting steel plate 21 and the tensioning device base mounting steel plate 22 are symmetrically arranged on the upper surface of the reinforced concrete foundation body 1, the winch drum base mounting steel plate 23 is arranged in the middle surface of the reinforced concrete foundation body 1, and the motor base and reduction box base mounting steel plate 24 is arranged in the lower surface of the reinforced concrete foundation body 1.

[0061] See also Figure 1 The ground power generation equipment installation steel plate 2 of the embodiment of the present invention is configured as a special-shaped steel plate adapted to the corresponding ground power generation equipment 5. The design of the special-shaped steel plate, when used in conjunction with the corresponding ground power generation equipment 5, can meet the extremely high positioning strength requirements of the anchor bolts for the ground power generation equipment foundation used for high-altitude wind energy.

[0062] In the embodiment of the present invention, refer to Figure 1 In order to resist the pulling force in the rope-out direction, two embedded parts 231 can be symmetrically arranged at the two corners on one side of the rope-out direction of the steel plate 23 installed at the winch drum base. Each embedded part 231 is composed of an anchor bar and a shear key. A first hidden column 232 is correspondingly arranged at the lower end of each embedded part 231; the setting of the shear key can resist the large horizontal force along the rope-out direction and prevent the embedded part from being pulled out. The setting of the first hidden column 232 can increase the safety and reliability of the structure here and more effectively prevent the anchor bar or the shear key from being pulled out.

[0063] In order to resist the pulling force of the anchor bolts 32 reserved on both sides of the tail of the winch drum base, a second hidden column 233 can be set at the lower end of each group of reserved anchor bolts 32 located at the tail corresponding to the winch drum base mounting steel plate 23.

[0064] In the embodiment of the present invention, refer to Figure 1 Two cable channel openings 13 for connecting to the cable trench in the plant area are symmetrically arranged on the reinforced concrete foundation body 1 on both sides of the motor base and the reduction box base mounting steel plate 24. A control box base opening 14 is arranged on the reinforced concrete foundation body 1 on the outside of the cable storage winch base mounting steel plate 21, and two control box base mounting channel steels 15 are symmetrically arranged on the reinforced concrete foundation body 1 on both sides of the control box base opening 14.

[0065] More specifically, the control box base mounting channel steel 15 can be made of hot-dip galvanized channel steel. After the control box of the ground power generation equipment 5 is placed in the control box base opening 14, the control box can be fixed with the help of the control box base mounting channel steel 15.

[0066] Reference Figure 2 and Figure 4The reinforced concrete foundation body 1 of the embodiment of the present invention is configured as a reinforced concrete flat slab raft foundation, and the reinforced concrete flat slab raft foundation includes an underground raft foundation part 11 and an above-ground raft foundation part 12 which are cast with concrete at one time.

[0067] Reference Figure 2 and Figure 4 The plane size of the reinforced concrete flat raft foundation of the embodiment of the present invention is 15mx7.6m, the thickness of the underground part 11 of the raft foundation is 1.2m, and the thickness of the above-ground part 12 of the raft foundation is 0.22m.

[0068] Reference Figure 1-6 When preparing the foundation of the ground power generation equipment for high-altitude wind energy according to the embodiment of the present invention, first construct the foundation cushion layer 61 on the foundation bearing layer 6, and then pour concrete on the foundation cushion layer 61 to form a reinforced concrete flat raft foundation. The backfill soil on the foundation side is compacted by layering, and the layer thickness is not more than 250mm, and the compaction coefficient is not less than 0.94. After the foundation strength meets the requirements, the ground power generation equipment installation steel plate 2 is arranged on the foundation plane of the reinforced concrete flat raft foundation, and the top elevation of various installation steel plates is 0.3m. Afterwards, the reserved anchor assembly 3 is used to fix the ground power generation equipment installation steel plate 2 to the reinforced concrete flat raft foundation, and finally the leveling nut 313 is used for leveling and secondary grouting.

[0069] The ground power generation equipment foundation for high-altitude wind energy in the embodiment of the present invention integrates the setting of hidden columns, the setting of shear keys, the setting of various equipment mounting steel plates, the setting of high-strength anchor bolts (i.e., multiple groups of reserved anchor bolts 32), the setting of reserved anchor bolts 32 and the mounting steel plates as a set, the leveling effect of the leveling nuts 313, the setting of secondary grouting, and the design of the steel mesh and the anchoring length, so that the foundation has a large horizontal force, ensuring a high foundation installation accuracy requirement.

[0070] Furthermore, the ground power generation equipment foundation for high-altitude wind energy of the embodiment of the present invention can ensure the safety and reliability of the original structure by virtue of its structural form, while taking into account the convenience and economy of construction. After use, it fills the gap in the design of the foundation of generator equipment for high-altitude wind energy power generation technology scientific research projects, and provides a reference for the design of the foundation of generator equipment for subsequent similar projects.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A ground power generation equipment foundation for high-altitude wind energy, characterized in that: include: A reinforced concrete foundation body, wherein the reinforced concrete foundation body is in a rectangular block shape as a whole, and the bottom of the reinforced concrete foundation body is arranged on the foundation bearing layer; A ground power generation equipment installation steel plate, which is arranged on the top of the reinforced concrete foundation body and is used to arrange and fix the entire ground power generation equipment; Among them, a secondary grouting layer is arranged between the ground power generation equipment installation steel plate, the reinforced concrete foundation body and the ground power generation equipment. At the same time, the ground power generation equipment installation steel plate and the reinforced concrete foundation body are connected through a number of reserved anchoring components.

2. A ground power generation equipment foundation for high-altitude wind energy according to claim 1, characterized in that: The reserved anchor assembly includes reserved anchor holes opened on the ground power generation equipment installation steel plate and reserved anchors, reserved steel mesh and reserved anchor plates arranged in the reinforced concrete foundation body. The lower ends of each group of the reserved anchors are connected to a corresponding reserved anchor plate through corresponding nuts, and the upper ends of each group of the reserved anchors pass through a corresponding group of reserved anchor holes and are fixedly connected through corresponding double nuts and leveling nuts arranged on the upper and lower parts of the ground power generation equipment installation steel plate; multiple reserved steel meshes are vertically layered in the reinforced concrete foundation body and are longitudinally penetrated by all the reserved anchors; reserved grouting holes for secondary grouting after leveling are also opened on the ground power generation equipment installation steel plate.

3. A ground power generation equipment foundation for high-altitude wind energy according to claim 2, characterized in that: The reserved steel mesh comprises a first group of reserved steel mesh and a second group of reserved steel mesh which are arranged alternately up and down, and the steel bar spacing of the first group of reserved steel mesh is smaller than the steel bar spacing of the second group of reserved steel mesh.

4. A ground power generation equipment foundation for high-altitude wind energy according to claim 2 or 3, characterized in that: The ground power generation equipment installation steel plate includes a cable storage winch base installation steel plate, a tensioning device base installation steel plate, a winch drum base installation steel plate, and a motor base and reduction box base installation steel plate. The cable storage winch base installation steel plate and the tensioning device base installation steel plate are symmetrically arranged on the upper surface of the reinforced concrete foundation body, the winch drum base installation steel plate is arranged in the middle surface of the reinforced concrete foundation body, and the motor base and reduction box base installation steel plate is arranged in the lower surface of the reinforced concrete foundation body; the ground power generation equipment installation steel plate is configured as a special-shaped steel plate compatible with the corresponding ground power generation equipment.

5. A ground power generation equipment foundation for high-altitude wind energy according to claim 4, characterized in that: Two embedded parts are symmetrically arranged at the two corners on one side of the rope outlet direction of the winch drum base mounting steel plate, each of the embedded parts is composed of anchor bars and shear keys, and a first hidden column is arranged corresponding to the lower end of each embedded part; a second hidden column is arranged respectively at the lower end of each group of reserved anchor bolts located at the tail of the winch drum base mounting steel plate.

6. A ground power generation equipment foundation for high-altitude wind energy according to claim 5, characterized in that: Two cable channel openings for connecting to the cable trench in the factory area are symmetrically arranged on the reinforced concrete foundation body corresponding to the two sides of the motor base and the reduction box base mounting steel plate; A control box base opening is provided on the reinforced concrete foundation body corresponding to the outer side of the cable storage winch base mounting steel plate, and two control box base mounting channel steels are symmetrically arranged on the reinforced concrete foundation body on both sides of the control box base opening.

7. A ground power generation equipment foundation for high altitude wind energy according to claim 1, 2 or 3, characterized in that: The reinforced concrete foundation body is configured as a reinforced concrete flat plate raft foundation, and the reinforced concrete flat plate raft foundation includes an underground raft foundation part and an above-ground raft foundation part which are cast with concrete at one time.

8. A ground power generation equipment foundation for high altitude wind energy according to claim 7, characterized in that: The plane size of the reinforced concrete flat raft foundation is 15mx7.6m, the thickness of the underground part of the raft foundation is 1.2m, and the thickness of the above-ground part of the raft foundation is 0.22m.

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