A fan foundation and a fan foundation monitoring device

Abstract

The application provides a fan foundation and a fan foundation monitoring device, and relates to the technical field of wind turbine installation foundation. The monitoring device is arranged on a base body and a fan tower drum. The base body is combined by a plurality of prefabricated components arranged in an annular array. The device further comprises an anchor rod, a foundation monitoring ring fixedly arranged on the outer sidewall of the tower drum, a pulling monitoring wire system, a pulling force monitoring sensor arranged on the pulling wire, and a pulling adjusting assembly. The bottom of the abutting adjusting turntable abuts on the pulling wire. The pulling force of the pulling wire is adjusted by rotating the abutting adjusting turntable. The prefabricated components are used for the efficient assembly of the fan foundation. The pulling monitoring wire system is used for the monitoring of the fan foundation and the tower drum. The early warning of the tower drum and the foundation is effectively realized. In addition, the pulling strength of the tower drum is adjusted. The normal operation of the wind turbine generator system is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine installation foundations, in particular to a wind turbine foundation and a wind turbine foundation monitoring device. Background Art

[0002] The prior art discloses an assembled steel tower wind turbine foundation and a construction method thereof with the publication number "CN202411228432.8". This assembled steel tower wind turbine foundation has a small number of parts, is simple and quick to install on site, has a fast construction speed, and has high construction efficiency. The above-mentioned assembled steel tower wind turbine foundation includes: a foundation assembly and a connection assembly; the foundation assembly includes a plurality of prefabricated components arranged along a circumferential direction, and the plurality of prefabricated components enclose and form an installation cavity, and two adjacent prefabricated components are connected by a plug-in structure, and the plug-in structure includes a plug-in block and / or a plug-in slot formed on one of the two adjacent prefabricated components, and a plug-in slot and / or a plug-in block formed on the other; the connection assembly is arranged in the installation cavity and is connected to the steel tower. This device solves the problems of the existing wind turbine foundation having a large number of parts, complicated steps during on-site installation, and slow construction speed.

[0003] However, the above-mentioned device still has obvious defects during use: although the above-mentioned device improves construction efficiency through prefabricated components, the combination of the above-mentioned devices is only used for the installation of wind turbine towers. After installation, it is impossible to monitor the tower status and wind turbine foundation, and thus it is impossible to provide an early warning of the overall status of the wind turbine. In addition, the above-mentioned device cannot adjust the tower traction force after installation, and thus it is impossible to make targeted adjustments according to the operating status of the wind turbine after the wind turbine is assembled and connected to the grid. Summary of the Invention

[0004] The object of the present invention is to provide a wind turbine foundation and a wind turbine foundation monitoring device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A wind turbine foundation monitoring device is provided, the monitoring device being arranged on a base and a wind turbine tower, the base being composed of a plurality of prefabricated components arranged in a circular array, the wind turbine tower being fixedly mounted on the base, and further comprising:

[0007] Anchor rod, the prefabricated component is provided with an anchor rod assembly seat, the anchor rod is connected to the prefabricated component through the anchor rod assembly seat, and the upper end of the anchor rod is provided with a pulling seat;

[0008] A foundation monitoring ring is provided above the base and fixedly mounted on the outer wall of the tower, and a ring-shaped array of pulling grooves is provided on the foundation monitoring ring in the same number as the prefabricated components and in a one-to-one correspondence;

[0009] A pulling monitoring wire strand system, which is composed of a number of pulling wire strands that are consistent with the number of prefabricated components and correspond one to one. One end of the pulling wire strand is connected to the pulling seat of the anchor rod, and the other end is connected to the pulling groove of the foundation monitoring ring. The pulling wire strand is also provided with a traction monitoring sensor, which monitors the pulling force of the pulling wire strand through the traction monitoring sensor; and

[0010] The pulling adjustment component consists of an adjustment seat fixedly installed on the prefabricated component and an abutment adjustment dial. A threaded adjustment sleeve is provided on the adjustment seat. The abutment adjustment dial is threadedly fixed and inserted into the threaded adjustment sleeve. The bottom of the abutment adjustment dial abuts on the pulling wire. The pulling force of the pulling wire is adjusted by rotating the abutment adjustment dial.

[0011] Preferably, the anchor rod assembly seat is a discontinuous stepped through hole that is larger at the top and smaller at the bottom. The anchor rod consists of a pulling rod body and an assembly block. The assembly block is threadedly fastened to the pulling rod body, and the assembly block is in abutment with the anchor rod assembly seat.

[0012] Preferably, the prefabricated component consists of an arc-shaped connector, a base and supporting ribs perpendicular to the base. The prefabricated component is formed by a steel frame and concrete casting. The supporting ribs are centrally arranged to evenly separate the two sides of the base.

[0013] Preferably, a pair of anchor rod assembly seats are provided on the prefabricated component and are arranged symmetrically along both sides of the supporting ribs. The pulling wire is provided with two connecting heads on one side of the anchor rod respectively, and the two connecting heads are respectively connected to the anchor rods of adjacent prefabricated components, thereby forming an "inverted Y-shaped" pulling wire structure.

[0014] Preferably, an I-shaped assembly groove is provided at the arc-shaped connecting head of the prefabricated component, and adjacent arc-shaped connecting heads abut to form a connection groove for inserting the pin block. Bolt assembly holes are correspondingly provided on the arc-shaped connecting head and the pin block, and adjacent prefabricated components are assembled and connected by inserting fastening bolts.

[0015] Preferably, assembly holes and bolt pins are equidistantly arranged on both sides of the base of the prefabricated component. The adjacent bases are assembled and connected by inserting the bolt pins of adjacent prefabricated components into the assembly holes and tightening them with bolts.

[0016] Preferably, the abutment adjustment turntable consists of a turntable portion and an abutment jaw portion, the abutment jaw portion is connected to the turntable portion through a rotating shaft, the threaded adjustment sleeve is arranged perpendicular to the connecting line of the pulling groove and the pulling seat, and the jaws of the abutment jaw portion abut against the bifurcation and junction of the "inverted Y-shaped" pulling wire, and the depth of the abutment adjustment turntable is adjusted by rotating the turntable portion, and then the pulling strength of the pulling wire on the basic monitoring ring is adjusted by the abutment jaw portion against the pulling wire.

[0017] Preferably, bolt assembly holes are correspondingly provided on the support ribs and the adjustment seat, and the adjustment seat is fixedly installed by tightening the bolts, and the adjustment seat is arranged parallel to the base.

[0018] A fan foundation adopts the above-mentioned fan foundation monitoring device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention adopts prefabricated components for efficient assembly of wind turbine foundations, and also monitors the wind turbine foundation and tower through a pulling monitoring wire system, thereby improving the stability of the connection between the tower and the foundation and effectively providing early warning for the tower and the foundation. In addition, the pulling strength of the tower is adjusted by setting a pulling adjustment component, which facilitates corresponding adjustments according to the operating status of the wind turbine after the wind turbine is connected to the grid, thereby further ensuring the normal operation of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of a local structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the pulling twisted wire connection structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the disassembly structure of the adjustment seat of the present invention.

[0026] In the figure: 1 base, 2 prefabricated component, 3 anchor rod, 4 anchor rod assembly seat, 5 pulling seat, 6 foundation monitoring ring, 7 pulling groove, 8 pulling wire, 9 traction monitoring sensor, 10 adjustment seat, 11 abutment adjustment turntable, 12 threaded adjustment sleeve, 13 pulling rod body, 14 assembly block, 15 arc-shaped connector, 16 base, 17 support rib, 18 pin block, 19 bolt assembly hole, 20 assembly sleeve hole, 21 bolt pin column, 22 turntable part, 23 abutment jaw part. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5 , the present invention provides a technical solution:

[0029] Example 1:

[0030] A wind turbine foundation monitoring device is provided, which is arranged on a base 1 and a wind turbine tower. The base 1 is composed of a plurality of prefabricated components 2 arranged in a circular array. The wind turbine tower is fixedly mounted on the base 1, and further includes:

[0031] Anchor rod 3, an anchor rod assembly seat 4 is provided on the prefabricated component 2, the anchor rod 3 is connected to the prefabricated component 2 through the anchor rod assembly seat 4, and a pulling seat 5 is provided on the upper end of the anchor rod 3;

[0032] The foundation monitoring ring 6 is arranged above the base 1 and fixedly mounted on the outer wall of the tower. The foundation monitoring ring 6 is provided with a ring array of pulling grooves 7, the number of which is the same as that of the prefabricated components 2 and which correspond one to one;

[0033] The pulling monitoring wire system consists of a number of pulling wires 8, the number of which is the same as that of the prefabricated components 2 and corresponds one to one. One end of the pulling wire 8 is connected to the pulling seat 5 of the anchor rod 3, and the other end is connected to the pulling groove 7 of the foundation monitoring ring 6. The pulling wire 8 is also provided with a traction monitoring sensor 9, which monitors the pulling force of the pulling wire 8 through the traction monitoring sensor; and

[0034] The pulling adjustment component consists of an adjustment seat 10 fixedly installed on the prefabricated component 2 and an abutment adjustment dial 11. A threaded adjustment sleeve 12 is provided on the adjustment seat 10. The abutment adjustment dial 11 is threadedly fixed and inserted into the threaded adjustment sleeve 12. The bottom of the abutment adjustment dial 11 abuts on the pulling wire 8. The pulling force of the pulling wire 8 is adjusted by rotating the abutment adjustment dial 11.

[0035] In this embodiment, the base 1 is the main structure of the wind turbine foundation, which is composed of a plurality of prefabricated components 2 arranged in a circular array. This assembly scheme has been disclosed in the prior art and is relatively common. The base 1 formed by the plurality of prefabricated components 2 is used to install the tower of the wind turbine. This installation structure is also a common installation structure in the prior art. Different from the prior art, in this embodiment, the prefabricated components 2 are pulled and limited by anchor rods 3, thereby further ensuring the stability of the prefabricated components 2. In order to install the anchor rods 3, anchor rod assembly seats 4 are provided on the prefabricated components 2. , wherein the prefabricated component 2 is composed of an arc-shaped connecting head 15, a base 16 and a supporting rib 17 perpendicular to the base 16. The prefabricated component 2 is formed by a steel frame and concrete casting. The supporting rib 17 is centrally arranged to evenly separate the two sides of the base 16, and each prefabricated component 2 is provided with an anchor assembly seat 4 symmetrically arranged along both sides of the supporting rib 17. In order to adapt to this structure, the pulling wire 8 is further provided with two connecting heads on one side of the pulling seat 5, thereby forming an "inverted Y-shaped" pulling wire 8 structure. The structure of the pulling wire 8 can be known in detail by referring to the drawings in the book specification. The significance of such a setting is that the basic monitoring ring 6 is pulled by the pulling wire 8 through the two groups of anchor rods 3. This combined structure is conducive to further ensuring the strength and stability of the pulling, and a traction monitoring sensor 9 is provided on the pulling wire 8. The sensor can monitor the pulling force changes at the ends of the anchor rods 3 and the tower, thereby playing a role in monitoring the safety of the base 1 and the tower. This monitoring method monitors the pulling force, so that the accident risk can be effectively predicted in the early prestress change stage before the accident occurs, thereby ensuring the normal operation of the wind turbine generator set. In addition, the pulling force of the pulling wire 8 is adjusted by setting a pulling adjustment component, so that after the wind turbine is connected to the grid, the pulling force of the pulling wire 8 is adjusted according to the operating status of the wind turbine, thereby fully ensuring the stability of the tower during operation. It should be noted that after the installation of the above-mentioned structure is completed, local concrete pouring and soil burial are required to increase the deadweight above the base 1. When pouring concrete and burying soil, it is necessary to ensure that the pulling wire 8 is still active, so as to ensure the normal operation of the subsequent pulling adjustment component.

[0036] Example 2:

[0037] The anchor rod assembly seat 4 is a discontinuous stepped through hole with a larger upper portion and a smaller lower portion. The anchor rod 3 is composed of a pulling rod body 13 and an assembly block 14 . The assembly block 14 is threadedly fastened to the pulling rod body 13 , and the assembly block 14 is in abutment with the anchor rod assembly seat 4 .

[0038] In this embodiment, the structure of the anchor rod 3 is further disclosed, and it can be seen from this that before the prefabricated components 2 are assembled, the pulling rod body 13 of the anchor rod 3 needs to be driven into the ground first, and after the prefabricated components 2 are assembled, the assembly block 14 and the pulling rod body 13 are assembled, so that the prefabricated components 2 are anchored by the traction force of the pulling rod body 13 and the assembly block 14, thereby ensuring the stability of the base 1.

[0039] Example 3:

[0040] An "I-shaped" assembly groove is provided at the arc-shaped connecting head 15 of the prefabricated component 2, and adjacent arc-shaped connecting heads 15 abut against each other to form a connection groove for the insertion of the latch block 18. Bolt assembly holes 19 are correspondingly provided on the arc-shaped connecting head 15 and the latch block 18, and the adjacent prefabricated components 2 are assembled and connected by inserting fastening bolts.

[0041] Assembly holes 20 and bolt pins 21 are equidistantly arranged on both sides of the base 16 of the prefabricated component 2. The adjacent bases 16 are assembled and connected by inserting the bolt pins 21 of the adjacent prefabricated components 2 into the assembly holes 20 and tightening them with bolts.

[0042] In this embodiment, the assembly structure between adjacent arc-shaped connectors 15 is further disclosed. By inserting pin blocks 18 between adjacent arc-shaped connectors 15, the connection tightness between the structures is improved, and the adjacent arc-shaped connectors 15 are connected by inserting fastening bolts. In addition, mutually connected bolt pin columns 21 and assembly matching holes 20 are also provided on both sides of the base 16 of the prefabricated component 2. This connection method is widely used in the prior art and will not be described in detail here.

[0043] Example 4:

[0044] Bolt assembly holes 19 are correspondingly opened on the support ribs 17 and the adjustment seat 10 , and the adjustment seat 10 is fixedly installed by tightening the bolts. The adjustment seat 10 is arranged parallel to the base 16 .

[0045] The abutment adjustment turntable 11 consists of a turntable portion 22 and an abutment jaw portion 23. The abutment jaw portion 23 is connected to the turntable portion 22 through a rotating shaft. The threaded adjustment sleeve 12 is arranged perpendicular to the connecting line of the pulling groove 7 and the pulling seat 5. The jaws of the abutment jaw portion 23 abut against the bifurcation and junction of the "inverted Y-shaped" pulling wire 8. The depth of the abutment adjustment turntable 11 is adjusted by rotating the turntable portion 22, and then the pulling strength of the pulling wire 8 on the basic monitoring ring 6 is adjusted by the abutment jaw portion 23 against the pulling wire 8.

[0046] In this embodiment, the installation method of the adjustment seat 10 on the prefabricated component 2 is further disclosed. At the same time, the abutment adjustment dial 11 is composed of a turntable portion 22 and an abutment jaw portion 23, wherein the abutment jaw portion 23 is movably connected to the bottom of the abutment adjustment dial 11 through a rotating shaft. Therefore, during the rotation of the abutment adjustment dial 11, the abutment jaw portion 23 can maintain a clamped state with the pulling wire 8. Referring to the accompanying drawings of the specification, an internal threaded sleeve that closely cooperates with the abutment adjustment dial 11 is installed in the threaded adjustment sleeve 12, so that the abutment adjustment dial 11 can push the abutment jaw during rotation. The part 23 performs telescopic movement, and the threaded adjustment sleeve 12 is arranged perpendicular to the connecting line of the pulling groove 7 and the pulling seat 5, so as to ensure that the jaw part 23 can stably abut the pulling wire 8. This force application method can significantly amplify the traction force at both ends of the pulling wire 8, and the traction force can be accurately controlled by fine-tuning, which is especially suitable for large-tonnage and high-precision traction scenarios such as wind turbine towers. It should be noted that the abutment adjustment turntable 11 in the above embodiment can also be replaced by an electric hydraulic telescopic mechanism or a servo electric telescopic cylinder, so that it can be more accurately controlled by unmanned remote control.

[0047] A fan foundation adopts the above-mentioned fan foundation monitoring device.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine foundation monitoring device, which is arranged on a base and a wind turbine tower, wherein the base is composed of a plurality of prefabricated components arranged in a circular array, and the wind turbine tower is fixedly mounted on the base, characterized in that: Also includes: Anchor rod, the prefabricated component is provided with an anchor rod assembly seat, the anchor rod is connected to the prefabricated component through the anchor rod assembly seat, and the upper end of the anchor rod is provided with a pulling seat; A foundation monitoring ring is provided above the base and fixedly mounted on the outer wall of the tower, and a ring-shaped array of pulling grooves is provided on the foundation monitoring ring in the same number as the prefabricated components and in a one-to-one correspondence; A pulling monitoring wire strand system, which is composed of a number of pulling wire strands that are consistent with the number of prefabricated components and correspond one to one. One end of the pulling wire strand is connected to the pulling seat of the anchor rod, and the other end is connected to the pulling groove of the foundation monitoring ring. The pulling wire strand is also provided with a traction monitoring sensor, which monitors the pulling force of the pulling wire strand through the traction monitoring sensor; and The pulling adjustment component consists of an adjustment seat fixedly installed on the prefabricated component and an abutment adjustment dial. A threaded adjustment sleeve is provided on the adjustment seat. The abutment adjustment dial is threadedly fixed and inserted into the threaded adjustment sleeve. The bottom of the abutment adjustment dial abuts on the pulling wire. The pulling force of the pulling wire is adjusted by rotating the abutment adjustment dial.

2. A wind turbine foundation monitoring device according to claim 1, characterized in that: The anchor rod assembly seat is a discontinuous stepped through hole that is larger at the top and smaller at the bottom. The anchor rod consists of a pulling rod body and an assembly block. The assembly block is threadedly fastened to the pulling rod body, and the assembly block is in abutment with the anchor rod assembly seat.

3. A wind turbine foundation monitoring device according to claim 1 or 2, characterized in that: The prefabricated component consists of an arc-shaped connector, a base and supporting ribs perpendicular to the base. The prefabricated component is formed by using a steel frame and concrete casting. The supporting ribs are centrally arranged to evenly separate the two sides of the base.

4. A wind turbine foundation monitoring device according to claim 3, characterized in that: A pair of anchor rod assembly seats are provided on the prefabricated component and are arranged symmetrically along both sides of the supporting ribs. The pulling wire is provided with two connecting heads on one side of the anchor rod, and the two connecting heads are respectively connected to the anchor rods of adjacent prefabricated components, thereby forming an "inverted Y-shaped" pulling wire structure.

5. A wind turbine foundation monitoring device according to claim 4, characterized in that: An "I-shaped" assembly groove is provided at the arc-shaped connecting head of the prefabricated component, and adjacent arc-shaped connecting heads abut to form a connection groove for the insertion of the latch block. Bolt assembly holes are correspondingly provided on the arc-shaped connecting head and the latch block, and adjacent prefabricated components are assembled and connected by inserting and tightening bolts.

6. A wind turbine foundation monitoring device according to claim 5, characterized in that: Assembly holes and bolt pins are equidistantly arranged on both sides of the base of the prefabricated component. The adjacent bases are assembled and connected by inserting the bolt pins of adjacent prefabricated components into the assembly holes and tightening them with bolts.

7. A wind turbine foundation monitoring device according to claim 6, characterized in that: The abutment adjustment turntable consists of a turntable part and an abutment jaw part, the abutment jaw part is connected to the turntable part through a rotating shaft, the threaded adjustment sleeve is arranged perpendicular to the connecting line of the pulling groove and the pulling seat, and the jaws of the abutment jaw part abut against the bifurcation and junction of the "inverted Y-shaped" pulling wire. The depth of the abutment adjustment turntable is adjusted by rotating the turntable part, and then the pulling strength of the pulling wire on the basic monitoring ring is adjusted by the abutment jaw part against the pulling wire.

8. The wind turbine foundation monitoring device according to claim 7, characterized in that: The support ribs and the adjustment seat are both provided with bolt assembly holes correspondingly, and the adjustment seat is fixedly installed by tightening the bolts. The adjustment seat is arranged parallel to the base.

9. A fan foundation, characterized by: The wind turbine foundation adopts the wind turbine foundation monitoring device described in any one of claims 1-8.

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