Vortex vibration suppression device

Abstract

The utility model discloses a vortex vibration suppression device, which comprises a fixed ring, the sliding assembly is connected to the fixing ring in a sliding mode, and the sliding assembly can slide back and forth around the center of the fixing ring; the sliding assembly is connected to the fixing ring, the partition plates are connected to the sliding assembly, the number of the partition plates is at least two, the partition plates are arranged around the fixing ring at intervals, and an air guide included angle is formed between the two partition plates located on the two sides of the sliding assembly. And an aerodynamic coating formed on the outer side of the tower drum is changed through the partition plate, so that vortex vibration is effectively restrained and weakened, and the stability of the tower drum structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a damping device, especially a vortex suppression device. BACKGROUND

[0002] In the field of structural wind engineering, the tower structure such as wind turbine is prone to vortex vibration under the action of wind load, which will seriously affect the structural safety, therefore, it is necessary to apply the vibration suppression measures to the tower to reduce the influence of vortex vibration on the tower or suppress the occurrence of vortex vibration.

[0003] People usually divide the vibration suppression measures into active control method and passive control method according to the energy input form of the vibration suppression measures. The principle of passive control method is to change the vortex shedding mode by changing the structure outside the tower to change the aerodynamic force clothing, thereby suppressing the vortex vibration, but in this method, the structure located outside the tower cannot be guaranteed to be always in the wake of the incoming flow wind, when the structure located outside the tower is not in the wake of the incoming flow wind, it is not only difficult to suppress the vortex vibration, but also the tower will be subjected to large wind pressure, thereby damaging the tower structure. Therefore, there is an urgent need for a structure that can better suppress the vortex vibration outside the tower. SUMMARY

[0004] The utility model aims at providing a vortex suppression device to solve one or more technical problems existing in the prior art, at least to provide a beneficial choice or create conditions.

[0005] The solution of the technical problem of the utility model is:

[0006] A vortex suppression device, comprising: a fixed ring; a sliding assembly, which is slidingly connected to the fixed ring and can slide back and forth around the center of the fixed ring; and a partition plate, which is connected to the sliding assembly and is arranged at intervals around the fixed ring, and the two partition plates located on both sides of the sliding assembly form a wind guide included angle.

[0007] The technical scheme has at least the following beneficial effects: the fixing ring is used for connecting the tower drum outside the external device, the wind guide included angle is formed between the two side separation plates on the sliding assembly, a structure for guiding the flow and blocking the flow is formed outside the tower drum, when the tower drum is subjected to the flow, the separation plates are subjected to the wind pressure and slide on the fixing ring by following the sliding assembly, and finally the included angle between the two side separation plates and the wind direction of the flow is equal, at this time, the separation plates outside the tower drum rotate to the wake position of the flow according to the direction of the flow, effectively avoiding the problem of excessive resistance caused by directly blocking the flow passing through the outside of the tower drum, so that the separation plates can rotate and adjust the position according to the flow in different directions, and the aerodynamic force coat formed outside the tower drum is changed by the separation plates, thereby effectively inhibiting and weakening the vortex vibration and improving the stability of the tower drum structure.

[0008] As a further improvement of the above technical scheme, the fixing ring is spaced apart and connected in the up-down direction, the sliding assembly includes a sliding unit and a connecting piece, the sliding unit includes an upper sliding seat and a lower sliding seat, the upper sliding seat and the lower sliding seat are respectively connected to the two fixing rings, the upper sliding seat and the lower sliding seat are connected to the separation plate, the sliding unit is spaced apart and arranged around the fixing ring, and the connecting piece is connected between the two adjacent upper sliding seats and the two adjacent lower sliding seats. Each separation plate slides on the at least two fixing rings through one sliding unit, specifically, the upper sliding seat and the lower sliding seat are connected to each separation plate, and the separation plate slides on the two fixing rings through the upper sliding seat and the lower sliding seat, thereby improving the stability of the relative rotation of the separation plate around the outer periphery of the tower drum, and the connecting piece is connected between the two upper sliding seats and the two lower sliding seats, thereby reinforcing the structural stability between the top and bottom of the two separation plates and fixing the distance between the two separation plates by the connecting piece to form a fixed wind guide included angle.

[0009] As a further improvement of the above technical scheme, the outer baffle is formed downward outside the upper fixing ring, the upper sliding seat is provided with a first roller for sliding on the top side of the fixing ring, and the upper sliding seat is provided with a second roller for sliding on the inner side of the outer baffle. The upper sliding seat is abutted to the top side of the upper fixing ring by the first roller and can slide on the fixing ring, and the second roller is abutted to the inner side of the outer baffle to prevent the top of the separation plate from being separated outward from the upper fixing ring, so that the upper sliding seat is slidably connected to the upper fixing ring.

[0010] As a further improvement of the above technical solution, the bottom side of the fixed ring on the lower side is provided with a first baffle and a second baffle in the direction close to the center of the fixed ring, the lower sliding seat is provided with a third roller for sliding on the top side of the fixed ring, the lower sliding seat is provided with a fourth roller for sliding inside the first baffle, and the lower sliding seat is provided with a fifth roller for sliding outside the second baffle. The lower sliding seat is abutted to the top side of the fixed ring on the lower side by the third roller, can slide relatively on the fixed ring, is abutted to the inside of the first baffle by the fourth roller, prevents the bottom of the partition plate from being separated from the fixed ring on the lower side, is abutted to the outside of the second baffle by the fifth roller, prevents the phenomenon that the lower sliding seat deviates to the tower direction due to excessive falling force of the partition plate, and thus realizes the sliding connection of the lower sliding seat on the fixed ring on the lower side.

[0011] As a further improvement of the above technical solution, the sliding unit further comprises a reinforcing rod connected between the upper sliding seat and the lower sliding seat. The reinforcing rod connects the upper sliding seat and the lower sliding seat with each other, so that the upper sliding seat and the lower sliding seat are connected as a whole, the structural strength of the partition plate itself can be enhanced when the partition plate is connected to the upper sliding seat and the lower sliding seat, and the overall structural stability is further improved.

[0012] As a further improvement of the above technical solution, the middle part of the two reinforcing rods is further connected with the connecting piece. The middle part of the two reinforcing rods is further connected by the connecting piece between the two sliding units, the middle part of the two reinforcing rods can be further supported, the connection strength between the two sliding units is enhanced, and the overall structural stability is further improved.

[0013] As a further improvement of the above technical solution, the connecting piece is detachably connected with the upper sliding seat and the lower sliding seat respectively. When the size of the wind guide included angle needs to be changed, the distance between the two sliding units can be adjusted, at this time, the connecting piece between the two upper sliding seats and the connecting piece between the two lower sliding seats can be re-detached and replaced, so that the flexibility of use can be improved.

[0014] As a further improvement of the above technical solutions, the connecting piece comprises a connecting rod and a linear driving piece, one end of the connecting rod is rotatably connected to one end of the linear driving piece, the other end of the connecting rod and the other end of the linear driving piece are respectively rotatably connected to two of the upper sliding seats or two of the lower sliding seats. Between the two upper sliding seats, one end of the connecting rod away from the linear driving piece is rotatably connected to one of the upper sliding seats, and the other end of the linear driving piece away from the connecting rod is rotatably connected to the other upper sliding seat. Similarly, between the two lower sliding seats, one end of the connecting rod away from the linear driving piece is rotatably connected to one of the lower sliding seats, and the other end of the linear driving piece away from the connecting rod is rotatably connected to the other lower sliding seat. When it is necessary to change the size of the wind guide angle, the linear driving pieces between the two upper sliding seats and the two lower sliding seats are adjusted synchronously, for example, when the two ends of the linear driving piece are away from each other, the two partition plates are separated from each other, thereby increasing the wind guide angle; when the two ends of the linear driving piece are close to each other, the two partition plates are pulled close to each other, thereby reducing the wind guide angle. In this way, the overall structure state can be changed more flexibly and conveniently according to different use requirements.

[0015] As a further improvement of the above technical solutions, a plurality of through holes are arranged on the partition plate. When the airflow passes through the partition plate, it can pass through the plurality of through holes on the partition plate, thereby reducing the blocking of the airflow by the partition plate and simultaneously suppressing vortex vibration, further improving the structural stability of the tower drum.

[0016] As a further improvement of the above technical solutions, the size of the wind guide angle is between 60 degrees and 120 degrees. The wind guide angle in this range can better guide and block the airflow, effectively suppress and weaken the vortex vibration, and also take into account the structural stability of the tower drum. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only a part of the embodiments of the present application, not all embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0018] Figure 1 is the overall perspective view of the present application when it is installed in the tower drum, at this time the connecting piece is embodiment one.

[0019] Figure 2 is the front view of the upper sliding seat of the present application.

[0020] Figure 3 is the front view of the lower sliding seat of the present application.

[0021] In the drawings: 100 - fixed ring, 200 - partition plate, 210 - through hole, 310 - connecting piece, 320 - upper sliding seat, 321 - first roller, 322 - second roller, 330 - lower sliding seat, 331 - third roller, 332 - fourth roller, 333 - fifth roller, 340 - reinforcing rod. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0023] In the description of the present application, it should be understood that, in relation to the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation of the present application.

[0024] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0025] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0026] Referring to Figure 1 A vortex suppression device, comprising a fixed ring 100, a sliding assembly and a partition plate 200, wherein the sliding assembly is slidingly connected to the fixed ring 100, and the sliding assembly can slide back and forth around the center of the fixed ring 100; the partition plate 200 is connected to the sliding assembly, and the partition plate 200 is spaced apart by at least two around the fixed ring 100, and a wind guide included angle is formed between the two partition plates 200 on both sides of the sliding assembly.

[0027] From the above, the fixed ring 100 is used to connect the tower drum outside the external device, and the wind guide included angle is formed between the two separation plates 200 on the sliding assembly, which ensures that a structure for guiding and blocking the flow of the incoming flow can be formed outside the tower drum. When the tower drum is subjected to the incoming flow, the separation plate 200 is subjected to wind pressure and slides on the fixed ring 100 by following the sliding assembly, so that the included angle between the two separation plates 200 on the sliding assembly and the wind direction of the incoming flow is equal. At this time, the separation plate 200 outside the tower drum rotates to the wake position of the incoming flow according to the direction of the incoming flow, effectively avoiding the problem of excessive resistance caused by directly blocking the incoming flow passing through the outside of the tower drum. In this way, the separation plate 200 can rotate and adjust the position according to the incoming flow in different directions, and the aerodynamic force coat formed outside the tower drum can be changed by using the separation plate 200, so as to effectively suppress and weaken the vortex vibration and improve the stability of the tower drum structure.

[0028] The number of fixed rings 100 can be only one, at this time the separation plate 200 has a relative sliding connection structure in only one position relative to the tower drum of the external device. When the area required by the separation plate 200 is large, the connection structure of the separation plate 200 is not stable enough at this time. Therefore, in order to improve the stability of the sliding connection structure of the separation plate 200 relative to the tower drum, at least two fixed rings 100 are connected in the up-down direction in the embodiment, the sliding assembly includes a sliding unit and a connecting piece 310, the sliding unit includes an upper sliding seat 320 and a lower sliding seat 330, the upper sliding seat 320 and the lower sliding seat 330 are respectively connected to the two fixed rings 100, the separation plate 200 is connected between the upper sliding seat 320 and the lower sliding seat 330, and the sliding unit is spaced apart around the fixed ring 100. There are at least two, the connecting piece 310 is connected between two adjacent upper sliding seats 320 and two adjacent lower sliding seats 330 respectively. Each separation plate 200 slides on at least two fixed rings 100 through a sliding unit. Specifically, on each separation plate 200, an upper sliding seat 320 and a lower sliding seat 330 are connected respectively, and the separation plate 200 slides on two fixed rings 100 through the upper sliding seat 320 and the lower sliding seat 330 respectively, which improves the stability of the relative rotation of the separation plate 200 outside the tower drum. Between the two sliding units, the connecting piece 310 is connected between the two upper sliding seats 320 and the two lower sliding seats 330 respectively, so as to reinforce the stability of the structure between the top and bottom of the two separation plates 200, and the distance between the two separation plates 200 is fixed by the connecting piece 310 to form a fixed wind guide included angle.

[0029] In practical application, the fixed ring 100 can be spaced apart in the up-down direction with two, two fixed ring 100 corresponding to the top and bottom of the partition plate 200 position, and the number of slip units is also two, the upper slide 320 and the lower slide 330 of the two sliding units are connected with the partition plate 200 corresponding to the connection, and the guide wind angle is formed between the two partition plates 200.

[0030] The upper slide 320 is slidably connected to the fixed ring 100 on the top side, which has various structural forms, for example, the upper slide 320 and one of the fixed rings 100 are provided with a slide rail, and the other is provided with a slide groove. Through the cooperation of the slide rail and the slide groove, the upper slide 320 can be slidably connected to the fixed ring 100. In this embodiment, the outer side of the fixed ring 100 on the upper side is formed with an outer baffle arranged downward, as shown in Figure 2 The upper slide 320 is provided with a first roller 321 for sliding on the top side of the fixed ring 100, and the upper slide 320 is provided with a second roller 322 for sliding on the inner side of the outer baffle. In practical application, the upper slide 320 has a part extending above the fixed ring 100 for mounting and fixing the first roller 321. Similarly, the lower slide 330 has a part extending below the fixed ring 100 for mounting and fixing the second roller 322. The upper slide 320 is abutted to the top side of the fixed ring 100 on the upper side by the first roller 321, and can slide on the fixed ring 100. The second roller 322 is abutted to the inner side of the outer baffle to prevent the top of the partition plate 200 from being separated from the fixed ring 100 on the upper side outwardly, so as to realize the sliding connection of the upper slide 320 on the fixed ring 100 on the upper side.

[0031] For the sliding connection of the lower slide 330 on the fixed ring 100 on the top side, it has various structural forms, for example, one of the lower slide 330 and the fixed ring 100 is provided with a slide rail, and the other is provided with a slide groove. Through the cooperation of the slide rail and the slide groove, the lower slide 330 can be slidably connected to the fixed ring 100. In this embodiment, the bottom side of the fixed ring 100 on the lower side is provided with a first baffle and a second baffle along the direction close to the center of the fixed ring 100, as shown in Figure 3As shown, the lower sliding seat 330 is provided with a third roller 331 for sliding on the top side of the fixed ring 100, the lower sliding seat 330 is provided with a fourth roller 332 for sliding on the inner side of the first baffle, the lower sliding seat 330 is provided with a fifth roller 333 for sliding on the outer side of the second baffle. In actual application, the lower sliding seat 330 has a part extending above the fixed ring 100 for mounting the third roller 331, similarly, the lower sliding seat 330 has a part extending below the fixed ring 100 for mounting the fourth roller 332 and the fifth roller 333. The lower sliding seat 330 is in abutment with the top side of the fixed ring 100 on the lower side through the third roller 331, and can slide on the fixed ring 100, and is in abutment with the inner side of the first baffle through the fourth roller 332, preventing the bottom of the partition plate 200 from being separated from the fixed ring 100 on the lower side, and is in abutment with the outer side of the second baffle through the fifth roller 333, preventing the lower sliding seat 330 from being deviated towards the tower from the excessive falling force of the partition plate 200, thus realizing the sliding connection of the lower sliding seat 330 on the fixed ring 100 on the lower side.

[0032] In order to enhance the reliability of the sliding unit structure, the sliding unit further comprises a reinforcing rod 340 connected between the upper sliding seat 320 and the lower sliding seat 330. The reinforcing rod 340 connects the upper sliding seat 320 and the lower sliding seat 330 with each other, so that the upper sliding seat 320 and the lower sliding seat 330 are connected as a whole, and when the partition plate 200 is connected to the upper sliding seat 320 and the lower sliding seat 330, the structural strength of the partition plate 200 itself can be enhanced, thereby further improving the overall structural stability.

[0033] Further, the connecting piece 310 is further connected to the middle part of the two reinforcing rods 340. Between the two sliding units, the middle parts of the two reinforcing rods 340 are further connected by the connecting piece 310, which can further support the middle parts of the two reinforcing rods 340, thereby enhancing the connection strength between the two sliding units and further improving the overall structural stability.

[0034] According to different use conditions, the air guide angle formed between the two partition plates 200 can be adjusted to adapt to different use requirements. There are various ways to adjust the position of the two partition plates 200. In embodiment one, the connecting pieces 310 are detachably connected to the upper sliding seats 320 and the lower sliding seats 330. For example, the connecting pieces 310 are arc-shaped plate structures, and the two ends of the connecting pieces 310 are fixed to the upper sliding seats 320 or the lower sliding seats 330 by screws. When it is necessary to change the size of the air guide angle, the distance between the two sliding seats can be adjusted. At this time, the connecting pieces 310 between the two upper sliding seats 320 and the connecting pieces 310 between the two lower sliding seats 330 can be re-detached and replaced, so as to improve the flexibility of use. In this embodiment, the connecting pieces 310 in the middle of the two reinforcing rods 340 are also detachably connected to the two reinforcing rods 340.

[0035] In embodiment two, the connecting pieces 310 include connecting rods and linear driving pieces. One end of the connecting rod is rotatably connected to one end of the linear driving piece, and the other end of the connecting rod and the other end of the linear driving piece are rotatably connected to two upper sliding seats 320 or two lower sliding seats 330, respectively. The linear driving piece is a driving piece for providing reciprocating movement in a straight line direction, and there are various structural forms, such as a pneumatic cylinder, a hydraulic cylinder, or an electric screw rod. Between the two upper sliding seats 320, one end of the connecting rod away from the linear driving piece is rotatably connected to one of the upper sliding seats 320, and the other end of the linear driving piece away from the connecting rod is rotatably connected to the other upper sliding seat 320. Similarly, between the two lower sliding seats 330, one end of the connecting rod away from the linear driving piece is rotatably connected to one of the lower sliding seats 330, and the other end of the linear driving piece away from the connecting rod is rotatably connected to the other lower sliding seat 330. When it is necessary to change the size of the air guide angle, the linear driving pieces between the two upper sliding seats 320 and the two lower sliding seats 330 are adjusted synchronously. For example, when the two ends of the linear driving piece are away from each other, the two partition plates 200 are pushed away from each other, thereby increasing the air guide angle. When the two ends of the linear driving piece are close to each other, the two partition plates 200 are pulled close to each other, thereby reducing the air guide angle. In this way, the overall structure state can be more flexibly and conveniently changed according to different use requirements. In this embodiment, the connecting pieces 310 in the middle of the two reinforcing rods 340 also include connecting rods and linear driving pieces. At this time, one end of the connecting rod away from the linear driving piece is rotatably connected to the middle of one of the reinforcing rods 340, and the other end of the linear driving piece away from the connecting rod is rotatably connected to the middle of the other reinforcing rod 340.

[0036] In order to reduce the blockage of the airflow by the partition plate 200, in the present embodiment, a plurality of through holes 210 are arranged on the partition plate 200, and in actual application, the number of the through holes 210 on each partition plate 200 can be adjusted according to the porosity, for example, the number of the through holes 210 on each partition plate 200 is adjusted according to the porosity of 20% to 50%. When the airflow passes through the partition plate 200, the airflow can pass through the plurality of through holes 210 on the partition plate 200, so that the blockage of the airflow by the partition plate 200 is reduced, the vortex vibration is suppressed, and the structural stability of the tower drum is further improved.

[0037] In some embodiments, the angle between the air guide is between 60 degrees and 120 degrees, for example, the angle between the air guide can be 60 degrees, 80 degrees, 100 degrees or 120 degrees, etc. The angle between the air guide in this range can better guide the airflow and block the airflow, which can effectively suppress and weaken the vortex vibration and also consider the structural stability of the tower drum. Preferably, the angle between the air guide can be controlled to be 90 degrees, which can better suppress the vortex vibration.

[0038] The preferred embodiments of the present application are described above, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A device for suppressing vortex-induced vibrations, characterized in that: The utility model relates to a kind of wind tunnel, including: Fixed ring (100); Slip assembly, slidingly connected to the fixed ring (100), the slip assembly can be around the center of the fixed ring (100) back and forth sliding; Partition plate (200), connected to the slip assembly, the partition plate (200) is spaced apart and is provided with at least two around the fixed ring (100), the wind guide included angle is formed between two partition plates (200) located on the two sides of the slip assembly.

2. A device according to claim 1, wherein: The fixed ring (100) is spaced apart and is connected to at least two in up-down direction, the slip assembly includes sliding unit and connecting piece (310), the sliding unit includes upper slide (320) and lower slide (330), the upper slide (320) and the lower slide (330) are slidingly connected to two fixed rings (100) respectively, the upper slide (320) and the lower slide (330) are connected between the partition plate (200), the sliding unit is spaced apart and is provided with at least two around the fixed ring (100), the connecting piece (310) is connected between two adjacent upper slides (320) respectively, two adjacent lower slides (330).

3. A device according to claim 2, wherein: The outer baffle is formed downwards outside the fixed ring (100) located on the upper side, the upper slide (320) is provided with first roller (321) for sliding on the top side of the fixed ring (100), the upper slide (320) is provided with second roller (322) for sliding inside the outer baffle.

4. A device according to claim 2, wherein: The first baffle and the second baffle are arranged in the direction close to the center of the fixed ring (100) on the bottom side of the fixed ring (100) located on the lower side, the lower slide (330) is provided with third roller (331) for sliding on the top side of the fixed ring (100), the lower slide (330) is provided with fourth roller (332) for sliding inside the first baffle, the lower slide (330) is provided with fifth roller (333) for sliding outside the second baffle.

5. A device according to claim 2, wherein: The sliding unit further includes reinforcing rod (340) connected between the upper slide (320) and the lower slide (330).

6. A device according to claim 5, wherein: The connecting piece (310) is further connected to the middle of two reinforcing rods (340).

7. A device according to claim 2, wherein: The connecting piece (310) is respectively detachably connected with the upper slide (320) and the lower slide (330).

8. A device according to claim 2, wherein: The connecting piece (310) includes connecting rod and linear drive, one end of the connecting rod is rotatably connected to one end of the linear drive, the other end of the connecting rod and the other end of the linear drive are rotatably connected to two upper slides (320) or two lower slides (330) respectively.

9. A device according to claim 1, wherein: The partition plate (200) is provided with a plurality of through holes (210).

10. A device according to claim 1, wherein: The size of the wind guide included angle is between 60 degrees and 120 degrees.

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