Vortex-induced vibration suppression device and wind generating set

Abstract

The utility model belongs to the field of wind power devices, and discloses a vortex-induced vibration suppression device and a wind generating set. The vortex-induced vibration suppression device comprises a mounting body and a vortex generator, an accommodating space is formed in the mounting body, and the accommodating space is used for accommodating a wind power single pile; the multiple vortex generators are arranged on the outer side wall of the mounting body, and the multiple vortex generators are spirally arranged at intervals in the axial direction of the mounting space and in the circumferential direction of the mounting space. According to the vortex-induced vibration suppression device, the multiple vortex generators are arranged on the installation body, horseshoe vortex wake flow is generated through the vortex generators, the vortex shedding frequency and the wake flow vortex structure are changed, the vortex-induced resonance suppression effect is improved, meanwhile, pile bottom scouring can be reduced, and meanwhile the pile bottom is prevented from being damaged. Due to the fact that the vortex generators are spirally arranged at intervals, omni-directional vortex-induced vibration suppression can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power devices, and in particular to a vortex-induced vibration suppression device and a wind power generator set. Background Art

[0002] At present, monopile foundation is a commonly used foundation form in the field of offshore wind power. Compared with land-based wind turbines, the foundation design and vibration control in the offshore wind turbine field are unprecedented. At the same time, due to the increase in the design life of offshore wind turbines, the requirements for corresponding fatigue loads are more stringent.

[0003] In the marine environment, cylindrical single pile foundations will inevitably encounter fluid-solid coupling problems caused by blunt body flow, which affects the frequency control and load level during the overall structural design; at the same time, the horseshoe vortex in the wake zone generated by vortex-induced resonance also intensifies the scouring of the lower part of the single pile foundation, affecting the bearing capacity of the structure. In the existing technology, it is difficult to suppress the vortex-induced resonance caused by the underwater environment. Utility Model Content

[0004] The main purpose of the utility model is to provide a vortex-induced vibration suppression device and a wind turbine generator set, aiming to solve the problem that it is difficult to suppress vortex-induced resonance caused by an underwater environment.

[0005] In order to achieve the above-mentioned object, the utility model provides a vortex-induced vibration suppression device, comprising:

[0006] An installation body is formed with a receiving space, wherein the receiving space is used to receive a wind power monopile; and

[0007] A plurality of vortex generators are provided, and the plurality of vortex generators are all provided on the outer side wall of the mounting body, and the plurality of vortex generators are arranged at spiral intervals along the axial direction of the mounting body and along the circumferential direction of the mounting body.

[0008] Optionally, the vortex generator includes a vortex generating block.

[0009] Optionally, the cross section of the eddy current generating block is triangular; or,

[0010] The cross section of the eddy current generating block is rectangular; or,

[0011] The cross section of the eddy current generating block is circular.

[0012] Optionally, the eddy current generating block is spirally extended along the axial direction of the mounting body and along the circumferential direction of the mounting body.

[0013] Optionally, a plurality of the vortex generators form a suppression group, and a plurality of the suppression groups are provided, and the plurality of the suppression groups are spaced apart along the circumference of the mounting body.

[0014] Optionally, a plurality of the suppression groups are arranged symmetrically along the center of the mounting body.

[0015] Optionally, the mounting body includes mounting ribs, and the mounting ribs are spirally extended to form the accommodating space.

[0016] The utility model also provides a wind power generator set, comprising:

[0017] Wind power monopiles; and,

[0018] A vortex-induced vibration suppression device, wherein the vortex-induced vibration suppression device is any one of the vortex-induced vibration suppression devices described above;

[0019] Wherein, the wind power monopile is installed in the accommodating space.

[0020] Optionally, the mounting body is detachably mounted on the outer side wall of the wind power monopile.

[0021] Optionally, a connecting flange is provided at the end of the wind power monopile, and a connecting hole is penetrated through the connecting flange;

[0022] The mounting body is provided with a threaded hole corresponding to the connecting hole;

[0023] The wind turbine generator set further includes a fixing bolt, which is passed through the connecting hole and is threadedly connected to the threaded hole.

[0024] The utility model provides a vortex-induced vibration suppression device, wherein an accommodating space is formed on the installation body to protect the wind power single pile within the accommodating space, and a plurality of vortex generators are arranged on the installation body, and horseshoe vortex wakes are generated by the vortex generators to change the vortex shedding frequency and the wake vortex structure, thereby improving the vortex-induced resonance suppression effect and reducing pile bottom scouring. At the same time, since the plurality of vortex generators are arranged in a spiral interval, omni-directional vortex-induced vibration suppression can be achieved without targeting a specific direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the vortex-induced vibration suppression device provided by the embodiment of the utility model;

[0026] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the installation body;

[0027] Figure 3 yes Figure 1 A schematic cross-sectional view of an embodiment of a middle vortex generator;

[0028] Figure 4 yes Figure 1A schematic cross-sectional view of another embodiment of a vortex generator;

[0029] Figure 5 yes Figure 1 A schematic cross-sectional view of another embodiment of a vortex generator;

[0030] Figure 6 It is a structural schematic diagram of a wind power single pile provided by an embodiment of the utility model.

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 Vortex-induced vibration suppression device 3 Wind power monopile 1 Install the main unit 31 Connection flange 2 Vortex generator

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] At present, monopile foundation is a commonly used foundation form in the field of offshore wind power. Compared with land-based wind turbines, the foundation design and vibration control in the offshore wind turbine field are unprecedented. At the same time, due to the increase in the design life of offshore wind turbines, the requirements for corresponding fatigue loads are more stringent.

[0038] In the marine environment, cylindrical single pile foundations will inevitably encounter fluid-solid coupling problems caused by blunt body flow, which affects the frequency control and load level during the overall structural design; at the same time, the horseshoe vortex in the wake zone generated by vortex-induced resonance also intensifies the scouring of the lower part of the single pile foundation, affecting the bearing capacity of the structure. In the existing technology, it is difficult to suppress the vortex-induced resonance caused by the underwater environment.

[0039] See also Figure 1 to Figure 2 The utility model provides a vortex-induced vibration suppression device 100, comprising a mounting body 1 and a vortex generator 2; a containing space is formed on the mounting body 1, and the containing space is used to contain a wind power single pile; a plurality of vortex generators 2 are provided, and the plurality of vortex generators 2 are all arranged on the outer wall of the mounting body 1, and the plurality of vortex generators 2 are arranged at spiral intervals along the axial direction of the mounting body and along the circumferential direction of the mounting body.

[0040] The utility model provides a vortex-induced vibration suppression device 100, wherein an accommodation space is formed on the installation body 1 to protect the wind power single pile in the accommodation space, and a plurality of vortex generators 2 are arranged on the installation body 1, and horseshoe vortex wakes are generated by the vortex generators 2 to change the vortex shedding frequency and the wake vortex structure, thereby improving the vortex-induced resonance suppression effect and reducing pile bottom scouring. At the same time, since the plurality of vortex generators 2 are arranged in a spiral interval, omnidirectional vortex-induced vibration suppression can be achieved without targeting a specific direction.

[0041] It should be noted that there are multiple implementations of the vortex generator 2, as long as it can generate a vortex system in a liquid environment.

[0042] Specifically, in this embodiment, the vortex generator 2 includes a vortex generating block. When the liquid flows through the vortex generator 2, it is blocked by the vortex generator 2, and a vortex system is generated behind the vortex generator 2, so that the laminar flow is transformed into turbulent flow, the vortex shedding frequency and the wake vortex structure are changed, and the vortex induced resonance suppression effect is improved.

[0043] It should be noted that the eddy current generating block has a variety of configurations, please refer to Figures 3 to 5 In one embodiment of the utility model, the cross section of the vortex generating block is triangular. In this embodiment, the triangular cross section allows the liquid to flow along the two side walls of the vortex generating block and generate an effective vortex system downstream of the vortex generating block.

[0044] In another embodiment provided by the present invention, the cross-section of the eddy current generating block is rectangular.

[0045] Likewise, the cross-section of the eddy current generating block is circular.

[0046] In the vortex-induced vibration suppression device 100 provided by the present invention, there are multiple implementations of the cross-section of the vortex generating block, as long as an effective vortex system can be generated.

[0047] In addition, the vortex generating block is arranged to extend in a spiral along the axial direction of the mounting body and along the circumferential direction of the mounting body. In this embodiment, in order to further improve the omnidirectional suppression effect of the vortex-induced vibration suppression device 100, the vortex generating block is also arranged to extend in a spiral, so that the flow planes at various height positions are different, the spanwise correlation of the vortex-induced vibration is weakened, and thus the suppression effect is improved.

[0048] On the other hand, the plurality of vortex generators 2 form a suppression group, and the plurality of the suppression groups are provided, and the plurality of the suppression groups are arranged at intervals along the circumference of the mounting body. In this embodiment, the plurality of vortex generators 2 form a suppression group, and by providing the plurality of the suppression groups, the vortex-induced vibration suppression device 100 can achieve the effect of vortex-induced resonance suppression.

[0049] Furthermore, the plurality of suppression groups are arranged symmetrically along the center of the mounting body. In this embodiment, the symmetrical arrangement of the plurality of suppression groups can achieve the vortex induced resonance suppression effect in any direction, avoiding different suppression effects in different directions, which eventually leads to excitation.

[0050] On the other hand, the mounting body 1 can be implemented in a variety of ways, as long as it can generate the accommodating space and install the vortex generator 2. For example, the mounting body 1 can be a mounting net, which is arranged on the outer wall of the wind turbine pile, or a mounting sleeve can be used, which is sleeved on the outer wall of the wind turbine pile.

[0051] Specifically, in this embodiment, the mounting body 1 includes mounting ribs, and the mounting ribs are arranged to extend in a spiral to form the accommodation space. The structure is simple and reliable, and the weight is small, which is convenient for installation and setting. At the same time, in this embodiment, due to the use of the mounting ribs, the vortex generating block is also arranged to extend in a spiral, so that the flow planes at various height positions are different, and the spanwise correlation of the vortex-induced vibration is weakened, thereby improving the suppression effect.

[0052] In addition, it should be noted that, in this embodiment, different numbers of the vortex generators 2 are selected to adjust the angle between two adjacent vortex generators 2 .

[0053] Similarly, in this embodiment, the angle can be adjusted by selecting the spacing between different vortex generators 2 .

[0054] The angles between the vortex generators 2 may also be adjusted by selecting different numbers of suppression groups, which is not specifically limited herein.

[0055] Based on the above-mentioned vortex-induced vibration suppression device 100, the utility model also provides a wind turbine generator set, including all the technical features of the above-mentioned vortex-induced vibration suppression device 100, and therefore, also has the technical effects brought by all the above-mentioned technical features, which will not be described one by one here.

[0056] The wind turbine generator set further includes a wind power monopile 3 ; wherein the wind power monopile 3 is installed in the accommodating space.

[0057] In the wind turbine generator set provided by the utility model, the vortex-induced vibration suppression device 100 is arranged on the outer wall of the wind turbine single pile, wherein the mounting body 1 is arranged on the outer wall of the wind turbine single pile 3, and the vortex generator 2 on the mounting body 1 generates a horseshoe vortex wake, thereby changing the vortex shedding frequency and the wake vortex structure, thereby improving the vortex-induced resonance suppression effect, and also reducing the scouring of the pile bottom. At the same time, since the multiple vortex generators are arranged in a spiral interval, omni-directional vortex-induced vibration suppression can be achieved.

[0058] It should be noted that the wind power single pile 3 can be directly sleeved into the accommodating space, or can be fixedly installed into the accommodating space.

[0059] Specifically, in this embodiment, the installation body 1 is detachably installed on the outer side wall of the wind power monopile 3. In this embodiment, the detachable installation can facilitate the installation of the installation body 1 and facilitate subsequent replacement and setting.

[0060] It should be noted that there are many ways to detachably mount the mounting body 1 on the outer side wall of the wind power monopile 3 , such as by spot welding or by bolting through multiple bolt points.

[0061] See also Figure 6 In the specific embodiment provided by the utility model, the end of the wind power monopile 3 is provided with a connection flange 31, and the connection flange 31 is provided with a connection hole; the installation body 1 is provided with a threaded hole corresponding to the connection hole; the wind turbine generator set also includes a fixing bolt, which is passed through the connection hole and is threadedly connected to the threaded hole. In this embodiment, the installation body 1 is installed on the wind power monopile 3 by bolting at the end, which has a simple and reliable structure, and the end face of the installation body 1 is fixed by the connection of the flange plate, and the fixed position is convenient for operation.

[0062] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vortex-induced vibration suppression device, characterized in that: include: An installation body is formed with a receiving space, wherein the receiving space is used to receive a wind power monopile; as well as, A plurality of vortex generators are provided, and the plurality of vortex generators are all provided on the outer side wall of the mounting body, and the plurality of vortex generators are arranged at spiral intervals along the axial direction of the mounting body and along the circumferential direction of the mounting body.

2. The vortex-induced vibration suppression device according to claim 1, characterized in that: The vortex generator includes a vortex generating block.

3. The vortex-induced vibration suppression device according to claim 2, characterized in that: The cross section of the eddy current generating block is triangular; or, The cross section of the eddy current generating block is rectangular; or, The cross section of the eddy current generating block is circular.

4. The vortex-induced vibration suppression device according to claim 2, characterized in that: The eddy current generating block is spirally extended along the axial direction of the mounting body and along the circumferential direction of the mounting body.

5. The vortex-induced vibration suppression device according to claim 1, characterized in that: A plurality of the vortex generators form a suppression group, a plurality of the suppression groups are provided, and the plurality of the suppression groups are arranged at intervals along the circumferential direction of the mounting body.

6. The vortex-induced vibration suppression device according to claim 5, characterized in that: The plurality of suppression groups are centrally symmetrically arranged along the mounting body.

7. The vortex-induced vibration suppression device according to claim 1, characterized in that: The mounting body comprises mounting ribs, and the mounting ribs are arranged to extend in a spiral shape to form the accommodating space.

8. A wind turbine generator set, characterized in that: include: Wind power monopile; as well as, A vortex-induced vibration suppression device, wherein the vortex-induced vibration suppression device is the vortex-induced vibration suppression device according to any one of claims 1 to 7; Wherein, the wind power monopile is installed in the accommodating space.

9. The wind turbine generator set according to claim 8, characterized in that: The mounting body is detachably mounted on the outer side wall of the wind power monopile.

10. The wind turbine generator set according to claim 9, characterized in that: The end of the wind power monopile is provided with a connecting flange, and the connecting flange is penetrated with a connecting hole; The mounting body is provided with a threaded hole corresponding to the connecting hole; The wind turbine generator set further includes a fixing bolt, which is passed through the connecting hole and is threadedly connected to the threaded hole.

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