CN206386235U

CN206386235U - Suppress building enclosure oscillation crosswise and protect the device of tilting member

Info

Publication number: CN206386235U
Application number: CN201621493547.0U
Authority: CN
Inventors: 马盛骏
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2017-08-08
Anticipated expiration: 2026-12-30

Abstract

The utility model discloses a kind of device for suppressing building enclosure oscillation crosswise and protecting tilting member, including the first flexible pocket, the second flexible pocket and pressure regulating part；When tilting member and building enclosure are collided, first flexible pocket and the second flexible pocket first buffer the part kinetic energy that tilting member is absorbed by compression, orderly mechanical kinetic energy is converted into the unordered heat energy of fluid media (medium), and then the kinetic energy that tilting member hits building enclosure is reduced, play a part of suppressing building enclosure oscillation crosswise to a certain extent；And pressure regulating part adjusts the pressure of the first flexible pocket and/or the second flexible pocket interior fluid mediums to convenient pressure, in knockout process, first flexible pocket and the second flexible pocket are produced reverse active force by compression, the opposition reversely pushes back tilting member, so that the tilting member and the direction of vibration of the building enclosure are on the contrary, further cut down the oscillation crosswise of building enclosure.

Description

Device for inhibiting lateral vibration of enclosure structure and protecting swinging component

Technical Field

The invention relates to the technical field of tower drum vibration, in particular to a device for inhibiting the lateral vibration of an enclosure structure and protecting a swinging component.

Background

The wind generating set is a device for converting wind energy into electric energy, and comprises a tower 9, a wind turbine 1 and a generator 2 which are arranged at the top of the tower 9, wherein a cabin 4 is arranged at the top of the tower 9, and the generator 2 and a generator switch cabinet 4 are both positioned inside the cabin 4. The wind turbine 1 absorbs wind energy and converts the wind energy into rotational mechanical energy, which is transmitted to the generator 2, and the rotational mechanical energy is converted into electric energy by the generator 2.

The generator 2 is connected with a cable 5, and the cable 5 transmits the electric energy generated by the generator 2 to a converter cabinet 10 positioned at the bottom of a tower 9. The cross-sectional area of the single cable 5 is approximately 185mm²Or 240mm²The number of cables 5 usually connected to one generator 2 for the transmission of electric energy is several (sometimes tens of). The nacelle 4 is typically rotatably mounted on top of a tower 9 to accommodate the wind turbine 1 to capture wind energy. During rotation of the nacelle 4, the cables 5 connected to the generator 2 also need to be twisted at the same time.

In order to reduce fatigue damage of the cable 5 caused by long-term frequent twisting work, the twisting of the cable 5 is shared by the upper section of the cable 5 at present, namely the cable 5 vertically hanging from the top downwards for a certain length bears the twisting of the cable 5. For example, the cable 5 falls vertically from the top by 15 to 20 meters, and the 180 ° twist is shared equally by these 15 to 20 meters, so that the average maximum deflection angle per meter is 9-12 °/m. The lower section of the cable 5 is then run through a saddle-like bracket 8 to the wall of the tower 9 and is fixed near the wall of the tower 9 by means of clamping plates, connecting pieces and fasteners of the cable 5.

The tower 9 is usually of a steel cylinder structure, and the steel cylinder has a relatively small thickness and a relatively high height of about several tens of meters. In the working process, the tower barrel 9 can swing to a certain degree under the action of external wind power, correspondingly, the upper section of the vertically-drooping cable 5 can swing under the swinging traction action force of the nacelle 4 due to the fact that the upper end portion of the vertically-drooping cable 5 is connected with the generator 2 positioned at the top of the tower barrel 9, and the upper section of the vertically-drooping cable 5 has certain time lag due to the fact that the upper section of the cable 5 and the tower barrel 9 swing, and therefore the inner wall of the tower barrel 9 can be impacted in the swinging process of the cable 5. In order to avoid potential safety hazards caused by collision of the cable 5 and the tower barrel 9, a check ring 6 is further arranged in the tower barrel 9, the check ring 6 is fixedly connected with the inner wall of the tower barrel 9 through a fixing plate 7, and the vertically falling cable 5 is limited in the check ring 6.

In order not to affect the twisting of the cable 5 with the nacelle 4, there is a predetermined clearance, approximately a few tens of millimetres, between the cable 5 and the collar 6. When the top of the cable 5 swings under the traction of the nacelle 4, the cable 5 will still hit the inner wall of the collar 6.

The weight of the cable 5 is larger, generally 400Kg-800Kg, under strong wind and high turbulence intensity, the vibration frequency of the cable 5 is increased while the cable 5 swings back and forth, and the cable 5 is subjected to the action of gravity to increase the falling effect generated by the cable 5 net bag arranged on the cabin 4 for lifting the cable 5. Under the action of the alternate falling acting force, the ropes of the cable 5 tuck into the insulating layer of the cable 5, damage the insulating layer and cause electric leakage and short circuit fire. The fire disaster of the wind turbine generator is difficult to extinguish.

And, when the transverse swinging frequency of the cable 5 is consistent with (or close to) the top of the tower 9, because the self weight of the cable 5 is larger (400 + 800Kg), the upper part constraint end is at the control cabinet of the cabin 4 at the top of the tower 9 and is far away from the foundation base at the bottom of the tower 9, the top of the tower 9 receives the periodic load applied by the swinging of the cable 5, and only the transverse swinging amplitude is aggravated to damage the foundation of the tower 9.

On the other hand, the tower 9 is extremely unfavorable for a wind turbine of a wind generating set after the transverse swing amplitude is increased, and the wind energy absorbed by the blades of the wind turbine 1 is reduced.

Therefore, how to improve the service life and the use safety of the cable and the tower drum and improve the power generation efficiency of the wind generating set is a technical problem to be solved by technical personnel in the field.

Disclosure of Invention

In order to solve the technical problem, the invention provides a device for inhibiting the lateral vibration of an enclosure structure and protecting a swinging component, which comprises the following components:

the first flexible bag and the second flexible bag are respectively arranged on collision surfaces of the enclosure structure and the swinging component; the first flexible bladder and the second flexible bladder are both filled with a fluid medium.

Therefore, when the swing component collides with the enclosure structure, the swing component and the enclosure structure are in collision contact through the first flexible bag and the second flexible bag, and fluid media are filled in the first flexible bag and the second flexible bag, so that when the swing component and the enclosure structure collide, the first flexible bag and the second flexible bag firstly buffer partial kinetic energy which is compressed to absorb the swing component, orderly mechanical kinetic energy is converted into disordered thermal energy of the fluid media, the kinetic energy of the swing component impacting the enclosure structure is further reduced, and the effect of inhibiting the lateral vibration of the enclosure structure is achieved to a certain extent.

Taking a tower barrel and a cable as an example, the energy of the cable is absorbed by gas or liquid in a flexible bag in the process of collision between the cable and a limiting check ring arranged on the tower barrel, particularly under the strong wind and high turbulence intensity, the vibration frequency of the cable is increased while the cable swings back and forth, the cable is under the action of gravity, at the moment, the falling effect generated by the cable net bag arranged on the cable outlet of the cabin control cabinet for pulling the cable is obviously weakened, namely, part of energy in the impact process caused by the swing of the lower end is absorbed by fluid, therefore, the fluctuation range of the falling force transmitted from the lower end to the upper end of the cable is weakened, the problem that the release link of energy in the impact process and the action of unbalanced force in the impact process are disordered by fluid is solved, directional transverse unbalanced force is generated, that is, the impact force is homogenized by the fluid, and the homogenization represents that the impact force exists in all directions and is naturally consumed in the inner part. The alternating falling acting force of the cable net bag is hardly transmitted to the lower end. The rope is pulled into the cable insulating layer by the wave power, the damage to the insulation is controlled, and the situation that the rope is hard to touch in the prior art is thoroughly eliminated.

The disorder is expressed by performing substantial energy conversion on the impact of the cable and the limit retainer ring based on a second law of thermodynamics by using an evaluation method of energy quality, namely: high quality mechanical energy (carried by the cable during its oscillation) is dissipated or partially absorbed by the fluid (gas or liquid) through impact. Dissipation or absorption of the mechanical energy into lower-grade disordered energy is a spontaneous process. The dissipation process is the conversion of high-quality mechanical energy transferred to the cable 60 from the top of the tower to low-grade thermal energy, and the high-quality mechanical energy is finally dissipated in the natural environment without returning.

Optionally, the method further includes:

and the pressure adjusting component is used for adjusting the pressure of the fluid medium inside the first flexible bag and/or the second flexible bag so as to reduce the transverse vibration of the enclosure.

Optionally, the swing device further comprises a limiting component for limiting the swing amplitude of the swing end of the swing component, the limiting component is fixed to the envelope, and the first flexible bag is arranged on the limiting component.

Optionally, the limiting component includes a limiting retainer ring and a support assembly for fixing the limiting retainer ring to the enclosure structure; the first flexible bag is arranged on the inner peripheral wall of the limiting retainer ring.

Optionally, the number of the supporting assemblies is multiple, and the supporting assemblies are uniformly arranged along the circumferential direction of the limiting retainer ring.

Optionally, each support assembly is an elastic support assembly and comprises a telescopic elastic component, and two ends of the elastic component are respectively connected with the limiting retainer ring and the envelope structure.

Optionally, the building enclosure further comprises at least two elastic support assemblies, each elastic support assembly is arranged along the circumferential direction of the swinging component, and each elastic support assembly comprises a telescopic elastic component which is positioned between the swinging component and the building enclosure.

Optionally, a sheath is fixed to the circumference of the swinging member, and an inner end of each elastic member is fixedly connected to the sheath.

Optionally, the swing mechanism further comprises a limit check ring, the swing end of the swing component is located inside the limit check ring after installation, and the inner end of each elastic component is fixedly connected with the limit check ring.

Optionally, the elastic support assembly further comprises a rigidity adjusting component, and the rigidity adjusting component is used for adjusting the length of the elastic component to change the rigidity of the elastic component.

Optionally, the method further includes:

the acquisition component is used for acquiring the swing parameters of the enclosure structure and/or the swing component;

and the control component is used for controlling the pressure regulating component to regulate the internal pressure of the first flexible bag or/and the second flexible bag according to the acquired swing parameters so as to apply excitation opposite to the swing of the enclosure structure or the swing component to the swing component and control the swing frequency of the swing component to be far away from the natural frequency of the enclosure structure.

Optionally, the control component adjusts internal pressure of the first flexible bag or/and the second flexible bag according to the obtained swing parameter, so that the swing direction of the swing component is opposite to the swing direction of the enclosure structure; or,

the control component adjusts the internal pressure of the first flexible bag or/and the second flexible bag according to the obtained swing parameters, so that the collision frequency of the swing component on the first flexible bag or/and the second flexible bag is reduced, or the collision pressure generated on the first flexible bag or/and the second flexible bag in the collision process is continuously reduced.

Optionally, the obtaining component is a vibration meter, and the swing parameter is a swing amplitude or a swing acceleration or a swing frequency of the top of the enclosure structure;

or, the acquisition component is a displacement sensor, and the swing parameter is the swing displacement of the top of the enclosure structure;

or, the acquisition component is an acceleration sensor, and the swing parameter is the swing acceleration of the top of the enclosure structure.

Optionally, the fluid medium filled in the first flexible bag and the second flexible bag is gas or liquid.

Optionally, the first flexible bladder and the second flexible bladder are layered or combined into a layered structure.

Drawings

FIG. 1 is a schematic structural diagram of a wind turbine generator set in the prior art;

fig. 2 is a schematic structural diagram of a device for suppressing lateral vibration of an enclosure and protecting a swinging component in a first embodiment of the invention;

FIG. 3 is a cross-sectional view of the cable, the position of the position limiting retainer ring;

FIG. 4 is a schematic diagram of the first and second flexible bladders colliding;

fig. 5 is a control block diagram of the device for suppressing lateral vibration of the enclosure and protecting the swinging member in the first embodiment;

FIG. 6 is a flow chart of a control method for suppressing lateral vibration of an enclosure according to an embodiment of the present invention;

FIG. 7 is a schematic view of the swing states of the cable and the tower at different times;

FIG. 8 is a schematic structural diagram of a device for suppressing lateral vibration of a building envelope and protecting a swinging member according to a second embodiment of the present invention;

fig. 9 is a schematic structural view of a device for suppressing lateral vibration of the enclosure and protecting the swinging member according to a third embodiment of the present invention;

fig. 10 is a flowchart of a control method for suppressing lateral vibration of a building envelope according to a second embodiment of the present invention;

FIG. 11 is a block diagram of a stiffness adjustment feature in accordance with an exemplary embodiment of the present invention;

FIG. 12 is a block diagram of a spin-on screw mechanism in accordance with one embodiment of the present invention;

fig. 13 is a control block diagram of an apparatus for suppressing lateral vibration of a building envelope and protecting a swinging member according to another embodiment of the present invention;

FIG. 14 is a schematic structural view of a wind turbine generator system;

fig. 15 is a schematic structural view of a device for suppressing lateral vibration of the enclosure and protecting the swinging member according to another embodiment of the present invention;

FIG. 16 is a schematic diagram of a pressure sensor layer;

FIG. 17 is a schematic view of the structure of an actuator layer;

fig. 18 is a flow chart of a control method for suppressing lateral vibration of the building envelope according to a third embodiment of the present invention.

Wherein, in fig. 1:

1, a wind turbine, 2 generators, 3 generator switch cabinets, 4 engine rooms, 5 cables, 6 check rings, 7 fixing plates, 8 saddle surface supports, 9 tower barrels and 10 converter cabinets;

among them, in fig. 2 to 5, 7 to 11, and 14 to 17:

11a first flexible bag, 11a an impact-resistant wear-resistant layer, 12 a second flexible bag and 13 a limit retainer ring; 14 a cable jacket; 15 pressure source, 16 pipelines, 17 pressure sensor, 18 vibration meter; 19 a displacement sensor;

20 an elastic support member; a pressure sensor 21;

30 spin screw mechanism, 31 sleeve, 32 first shaft section, 33 second shaft section, 34 shell, 35 coil, 36 bearing, 37 positioning support; 381 short-circuiting ring; 382 short circuit ring; 391 a first magnetically permeable member; 392 a second magnetically permeable member;

40 actuators;

50, tower, 60 cables.

Detailed Description

Based on the technical problem of the ' cable swinging back and forth to itself and the components such as the cable net bag ', etc. ' mentioned in the background art, the text goes into intensive research and provides a technical scheme for solving the technical problem.

The technical solution is described by taking the enclosure as a tower and the swinging component as a swinging component, but it should be understood by those skilled in the art that the enclosure is not limited to the tower, and may also be the tower.

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 2 to 4, fig. 2 is a schematic structural diagram of a device for suppressing lateral vibration of an enclosure and protecting a swinging member according to a first embodiment of the present invention; FIG. 3 is a cross-sectional view of the cable, the position of the position limiting retainer ring; FIG. 4 is a schematic diagram of the first and second flexible bladders colliding.

The invention provides a device for inhibiting the lateral vibration of an enclosure structure and protecting a swinging component, which comprises a first flexible bag 11 and a second flexible bag 12, wherein the first flexible bag 11 and the second flexible bag 12 are respectively arranged on the contact surfaces of the enclosure structure and the swinging component, namely the collision surfaces of the enclosure structure and the swinging component. The interiors of first flexible bladder 11 and second flexible bladder 12 are both filled with a fluid medium.

Therefore, when the swing component collides with the enclosure structure, the swing component and the enclosure structure are in collision contact through the first flexible bag 11 and the second flexible bag 12, and fluid media are filled in the first flexible bag 11 and the second flexible bag 12, so that when the swing component and the enclosure structure collide, the first flexible bag 11 and the second flexible bag 12 firstly buffer partial kinetic energy which is compressed to absorb the swing component, orderly mechanical kinetic energy is converted into disordered thermal energy of the fluid media, the kinetic energy of the swing component impacting the enclosure structure is further reduced, and the effect of inhibiting the lateral vibration of the enclosure structure is achieved to a certain extent.

Taking the tower tube 50 and the cable 60 as an example, the energy of the cable 60 and the limiting retainer ring 13 arranged on the tower tube 50 in the process of collision is absorbed by the gas or liquid in the flexible bag, especially under strong wind and high turbulence intensity, the vibration frequency of the cable 60 per se is increased while the cable 60 swings back and forth, the cable 60 is acted by gravity, at this time, the falling action generated by lifting the cable 60 tuck arranged at the outlet of the cabin control cabinet cable 60 is obviously weakened, namely, the energy of the collision process caused by the swinging of the lower end is partially absorbed by the fluid, therefore, the fluctuation range of the falling force transmitted from the lower end to the upper end of the cable 60 is weakened, the problem that the release link of the energy in the collision process and the action of the unbalanced force in the collision process are disordered by the fluid is solved, the directional transverse unbalanced force, namely the collision force is homogenized by the fluid, and the homogenization means that all directions exist, naturally consumed internally. The alternating dropping force experienced by the cable 60 string is hardly transmitted up the lower end. The rope is pulled into the insulating layer of the cable 60 by the wave power, and the damage to the insulating layer is controlled, so that the situation of hard touch in the prior art is thoroughly eliminated.

The disorder is expressed by performing substantial energy conversion on the impact of the cable 60 and the limit stop ring 13 by using an evaluation method of energy quality based on a second law of thermodynamics, namely: high quality mechanical energy (carried by the cable 60 during its oscillation) is dissipated or partially absorbed by the fluid (gas or liquid) through impact. Dissipation or absorption of the mechanical energy into lower-grade disordered energy is a spontaneous process. The dissipation process is the conversion of high-quality mechanical energy transferred to the cable 60 from the top of the tower 50 swinging transversely to low-grade thermal energy, and the high-quality mechanical energy is finally dissipated in the natural environment without being repeated.

Of course, the first flexible bag 11 and the second flexible bag 12 may be made of a sponge or the like.

And, the invention further provides a pressure adjusting component for adjusting the pressure of the fluid medium in the first flexible bag 11 and/or the second flexible bag 12 to adjust the internal pressure of the two to a proper pressure, during the collision, the first flexible bag 11 and the second flexible bag 12 are compressed to generate a reverse acting force, and the reverse acting force pushes back the swinging component in a reverse direction, so that the swinging component is opposite to the vibration direction of the enclosure structure.

Of course, the pressure regulating components are components that match the fluid medium in the flexible bladder, including the pressure source 15 and pressure lines 16, pressure control valves, and flow control valves (not shown in FIG. 2). When the fluid medium is a liquid, the pressure source may be a hydraulic pump, and when the fluid medium is a gas, the pressure source may be an air compressor. The pressure regulating component may be mounted on the tower 50 or may be mounted on the ground. The specific structure of the pressure regulating member is not specifically described herein.

The first flexible bladder 11 and the second flexible bladder 12 are layered or combined into a layered structure. The impact surface of the first flexible bag 11 may be provided with an impact and wear resistant layer 11 a.

Referring to fig. 5 and 6, fig. 5 is a control block diagram of an apparatus for suppressing lateral vibration of a building envelope and protecting a swinging member in a first embodiment; fig. 6 is a flowchart of a control method for suppressing lateral vibration of the building envelope according to an embodiment of the present invention.

The device for inhibiting the transverse vibration of the enclosure structure by the flexible bag can be controlled by the following control method, and the specific method is as follows:

s10, presetting contact surfaces of the first flexible bag 11 and the second flexible bag 12 on the enclosure structure and the swinging component respectively;

s11, acquiring swing parameters of the enclosure structure or the swing component;

accordingly, in order to achieve an automated control, the device for suppressing lateral oscillations of the enclosure may comprise acquisition means for acquiring oscillation parameters of the enclosure and/or of the oscillating means. The acquisition component can be a vibration meter 18 and is arranged on the side wall of the enclosure structure, and the swing parameter is the swing amplitude or the swing acceleration or the swing frequency of the top of the enclosure structure;

or, the obtaining component is a displacement sensor 19, and may be disposed at the top of the enclosure structure (tower), as shown in fig. 7, the swing parameter is a swing displacement of the top of the enclosure structure;

or the acquisition component is an acceleration sensor, and the swing parameter is the swing acceleration of the top of the enclosure structure.

The swing parameter can also be the swing frequency of the enclosure structure, and correspondingly, the acquisition component is a vibration meter arranged at the corresponding position of the swing component.

The swing parameter may also be an impact pressure between the swing component and the enclosure, and accordingly the acquisition component is a pressure sensor.

Of course, the oscillation parameter may be a parameter such as an amplitude, an oscillation acceleration, or an oscillation frequency of the oscillating member.

And S12, adjusting the pressure of the fluid medium in the first flexible bag 11 and/or the second flexible bag 12 according to the swing parameters to apply the excitation opposite to the swing of the enclosure or the swing component to the swing component so as to control the swing frequency of the swing component to be far away from the natural frequency of the enclosure.

Whether the pressure of the fluid medium inside the first flexible bag 11 and/or the second flexible bag 12 is adjusted in place or not can be detected by a pressure sensor 17 mounted on the surface of the flexible bag, as shown in fig. 2. Of course, the pressure of the fluid medium inside the first flexible bag 11 and/or the second flexible bag 12 may be detected by a pressure gauge or the like installed in the pressure adjustment member.

That is, by adjusting the pressure of the fluid medium inside the first flexible bag 11 and/or the second flexible bag 12, an excitation opposite to the swing of the enclosure can be applied to the swing member, so that the enclosure can be reversely held by the swing member, and the transverse swing of the enclosure can be reduced. The swing of the swing component can be weakened by applying an excitation opposite to the swing of the swing component by adjusting the internal pressure of the flexible bag, and correspondingly, the traction force applied to the enclosure by the swing component is also correspondingly reduced, and the transverse swing amplitude of the enclosure can also be reduced.

Correspondingly, the device for restraining the lateral vibration of the enclosure and protecting the swinging component comprises a control component, wherein the control component adjusts the pressure of fluid media in the first flexible bag 11 and the second flexible bag 12 according to the acquired swinging parameters and applies opposite excitation to the swinging component so as to control the swinging frequency of the swinging component to be far away from the natural frequency of the enclosure. Therefore, the oscillation of the oscillating component can be prevented from inducing resonance with the building envelope. The control component can be arranged on the ground, so that an operator can control the control component conveniently.

The swing direction can be opposite, and the swing acceleration can be opposite.

Step S12 may specifically be: adjusting the internal pressure of the first flexible bag 11 or/and the second flexible bag 12 according to the obtained swing parameters so that the swing direction of the swing component is opposite to the swing direction of the enclosure structure; or, the internal pressure of the first flexible bag 11 or/and the second flexible bag 12 is adjusted according to the acquired swing parameters, so that the collision frequency of the swing component on the first flexible bag 11 or/and the second flexible bag 12 is reduced, or the collision pressure generated on the first flexible bag 11 or/and the second flexible bag 12 during the collision process is continuously reduced. The first flexible bag 11 and the second flexible bag 12 respectively comprise at least one pressure sensor, the two pressure sensors are connected with a control part, and a forward channel of the control part for sensor data acquisition also comprises a measuring circuit for measuring the mutual collision frequency of one or two flexible bags. The measurement circuit is capable of reflecting the pressure change as the flexible bladder is compressed or released (pressure buildup, rebound) during an impact. Specifically, during compression of the flexible bladder, the internal pressure thereof rises; when the flexible bag is released, the pressure of the flexible bag is reduced, and the pressure is restored to the normal state before the flexible bag is impacted. The pressure change is realized by increasing, decreasing and increasing …, the change signal of the non-electricity pressure in the flexible bag is converted into pulse signal through the trigger and output, and the pulse signal (pulse number) is counted by the counter, thus obtaining the mutual impact frequency of the flexible bags. Or the trigger is changed into analog quantity output through the signal converter, and the change of the amplitude of the analog quantity output reflects the change of the impact frequency. This also realizes the measurement of the impact pressure and the impact frequency by the pressure sensor. Taking the swing component as an example, in operation, the control component controls the pressure regulating component, adjusts (raises or lowers) the internal pressure of the first flexible bag 11 or/and the second flexible bag 12 according to the acquired swing parameters (impact frequency, impact pressure) of the swing component, continuously measures the swing parameters of the swing component within a preset time period, obtains the variation trend of the swing parameters, and if the swing parameters diverge (increase), the control component adjusts (lowers or raises) the internal pressure of the first flexible bag 11 or/and the second flexible bag 12 in the opposite direction, and so on until the final adjustment target, namely impact frequency reduction and/or impact pressure reduction, is reached.

Referring to fig. 7, fig. 7 is a schematic view illustrating the swinging state of the cable 60 and the tower 50 at different times

For example, when the building envelope swings to the left at a certain time, the swing part can swing to the right by adjusting the pressure of the first flexible bag 11 and the second flexible bag 12. Taking fig. 7 as an example, fig. 7 shows the swinging states of the cable 60 and the tower 50 at three moments, in the left drawing, the tower 50 swings to the right, the displacement of the tower top is S, at this moment, the cable 60 swings to the left by adjusting the internal pressure of the flexible bag, and the swinging angle is θ; in the middle view, tower 50 and cable 60 are both in an intermediate position; in the right drawing, the top of the tower tube 50 swings to the left, the swing displacement is S, and at the moment, the cable 60 swings to the right by adjusting the internal pressure of the flexible bag, and the swing angle is theta. Namely, the swinging direction of the swinging component is opposite to that of the enclosure structure, the swinging of the enclosure structure can be restrained, and the swinging amplitude or the acceleration of the enclosure structure is further weakened.

Of course, the vibration direction of the swing component is opposite to that of the top of the enclosure structure and the vibration frequency of the swing component is consistent with that of the top of the enclosure structure through reasonable control.

In a specific embodiment, the device for suppressing the lateral vibration of the enclosure and protecting the swinging component further comprises a limiting component for limiting the swinging amplitude of the swinging component, and the limiting component is fixed on the enclosure. Taking the enclosure as the tower 50 as an example, the limiting component is usually a limiting retainer ring, which is mainly installed inside the tower 50 and located at the upper section of the tower 50 to limit the swing of the cable 60 hanging from the top of the nacelle by 15 to 20 meters. The number of the limiting check rings can be two or more, the limiting check rings are arranged from top to bottom, and the falling parts of the cables 60 sequentially penetrate through the inner parts of the limiting check rings.

The limiting retainer ring 13 can be fixedly connected with the inner wall of the tower 50 through the supporting assembly, the first flexible bag 11 is arranged on the inner peripheral wall of the limiting retainer ring 13, and the second flexible bag 12 is arranged on the outer peripheral wall of the cable 60 corresponding to the limiting retainer ring 13.

For the connection reliability, the number of the supporting assemblies may be plural, each supporting assembly may extend in the radial direction, and each supporting assembly is uniformly arranged along the circumferential direction of the limit stop ring 13.

Under the above energy absorption concept, the invention also provides another structure and a control method which can reduce the lateral vibration of the building envelope.

Referring to fig. 8 to 9, fig. 8 is a schematic structural diagram of a device for suppressing lateral vibration of an enclosure and protecting a swinging member according to a second embodiment of the present invention; fig. 9 is a schematic structural diagram of a device for suppressing lateral vibration of the enclosure and protecting the swinging member according to a third embodiment of the present invention.

In the second embodiment and the third embodiment, the apparatus for suppressing the lateral vibration of the enclosure and protecting the swinging member further comprises at least two elastic support assemblies 20, each elastic support assembly 20 is arranged along the circumference of the swinging member, the elastic support assemblies 20 comprise elastic members which can stretch along the radial direction, and the elastic members are positioned on the swinging member and the enclosure.

The second embodiment differs from the third embodiment in that the inner end of the elastic member is fixedly connected to the cable 60 and the other end is connected to the stopper ring. It should be noted that the end of the resilient member adjacent the cable 60 is defined herein as the inner end and the other end adjacent the tower is defined as the outer end.

In a second embodiment, a sheath is fixed on the circumference of the swinging component, and the inner end part of each elastic component is fixedly connected with the sheath. Taking the swinging member as the cable 60 as an example, the inner end of the elastic member may be fixedly connected to the cable 60, as shown in fig. 8, the inner end of the elastic member is fixedly connected to the cable 60 sheath 14 fixed on the cable 60, so that the elastic member is compressed or stretched all the time during the swinging of the cable 60.

Additionally, the location of the flexible bladder in FIG. 8 does not show the support assembly that secures the retaining collar to the tower 50.

In the third embodiment, the inner end of the elastic component is fixedly connected to the position-limiting retainer ring, and as shown in fig. 9, the cable 60 is located inside the position-limiting retainer ring 13 and has a predetermined gap a with the circumference of the position-limiting retainer ring 13.

Thus, the compression or extension of the resilient member is initiated only after the cable 60 has hit the stop collar 13.

The limiting check ring has the same function as the limiting check ring in the embodiment 1 and is used for limiting the displacement of the swinging component during swinging, the swinging component is usually arranged in the limiting check ring, and the swinging component collides with the inner wall of the limiting check ring during vibration.

The resilient member may extend radially, preferably the resilient member is a spring.

The device for suppressing the lateral vibration of the enclosure and protecting the swinging member in the second and third embodiments may dissipate and store the vibration energy of the swinging member through the elastic member, so as to reduce the vibration of the swinging member, further reduce the traction force applied to the top of the tower 50 by the swinging member, and facilitate reducing the lateral vibration of the top of the tower 50.

The means for damping lateral vibrations of the building envelope and for protecting the oscillating members of the second and third embodiments may be used alone or in combination with the flexible bladder solution of the first embodiment. That is, two or more devices for suppressing lateral vibration of the building envelope and protecting the swinging members in the above embodiments are provided in the tower 50.

Referring to fig. 9 again, in the fourth embodiment, the device for suppressing the lateral vibration of the enclosure and protecting the swinging member further includes a rigidity adjusting member.

The rigidity adjusting component is used for adjusting the rigidity of the elastic component, and the preferable rigidity adjusting component adjusts the length of the elastic component to change the rigidity of the elastic component so as to reduce the transverse vibration of the enclosure. The stiffness of an elastic member, such as a spring, is the ratio of the load increase dF to the deformation increase d λ, i.e., the load required to generate a unit deformation, and the calculation formula of the stiffness of the spring is F' ═ dF/d λ. Here springs are chosen whose characteristic line is of the increasing type, the stiffness of which increases with increasing load.

The combination of the elastic component and the rigidity adjusting component firstly absorbs the mechanical energy (stored energy) of the swing component in the swing process, and is used for actively exciting the suspension swing component to swing when the elastic component is stretched, and the swing frequency and amplitude of the cable 60 are controlled by adjusting the rigidity of the elastic component, namely, the stored energy in the compression process is used for supplying the swing component with the energy required for supplementing the transverse swing amplitude when the elastic component is stretched.

The fourth embodiment is a combination of the first embodiment and the second embodiment, and in order to further buffer the impact of the swinging component such as the cable 60 to the enclosure structure in the first embodiment, the supporting assembly may be as follows.

Specifically, the support assembly may include an elastic member that is stretchable in the radial direction, and both ends of the elastic member are respectively connected with the limiting check ring and the enclosure structure.

In the process of collision between the cable 60 and the limiting retainer ring, part of mechanical kinetic energy is absorbed by impact between the flexible bags, part of elastic parts are compressed due to collision, and the other part of elastic parts are stretched to play a role in storing the mechanical energy, so that the collision mechanical energy between the cable 60 and the limiting retainer ring is reduced to a certain extent, and the impact force of the cable 60 on the tower tube 50 is reduced.

Further, the support assembly further comprises a rigidity adjusting component besides the elastic component, and the function and the structure of the rigidity adjusting component can be the same as those described above, and the rigidity adjusting component is used for adjusting the rigidity of the elastic component. The adjustment of the rigidity of the elastic component can be adjusted according to the vibration frequency, the swing amplitude and the swing acceleration of the cable 60 or the tower 50 in the actual working condition.

The elastic component and the rigidity adjusting component in the embodiment can be sequentially connected between the limiting retainer ring and the enclosure structure, the longitudinal length of the rigidity adjusting component can be adjusted, the elastic component can be extended or shortened along with the extension or shortening of the rigidity adjusting component, and the rigidity of the elastic component is different along with the difference of the length of the elastic component.

Referring to fig. 10, fig. 10 is a flowchart of a control method for suppressing lateral vibration of a building envelope according to a second embodiment of the present invention.

Specifically, the embodiment in which the rigidity adjusting member is provided may control the rigidity of the elastic member in the following control method:

s20, connecting a limiting retainer ring to the enclosure structure through at least two elastic components in advance;

s21, acquiring swing parameters of the enclosure structure or/and the swing component;

accordingly, the wobble parameter is acquired by the acquisition means, and the kind of the wobble parameter and the acquisition means can be referred to the description in step S11.

The pressure sensor 21 may be disposed between the elastic component and the limit retainer ring, or between the elastic component and the enclosure. The change in the rigidity of the elastic member is sensed by the pressure sensor 21.

And S22, adjusting the rigidity of each elastic component according to the acquired swing parameters so as to apply opposite excitation (acting force) to the swing component.

The excitation is acting force, after opposite excitation is applied to the swinging component, the swinging frequency of the swinging component is consistent with or close to consistent with the swinging frequency of the enclosure structure, and the swinging direction of the swinging component is inconsistent with or opposite to the swinging direction of the enclosure structure; or the acceleration of the swinging component is inconsistent or opposite to the swinging acceleration of the building envelope.

Similarly, the acquisition component is a vibration meter, and the swing parameter is the swing amplitude or the swing acceleration or the swing frequency of the top of the enclosure structure;

or the acquisition part is a displacement sensor 19, and the swing parameter is the swing displacement of the top of the enclosure structure;

Correspondingly, the device for restraining the lateral vibration of the building envelope and protecting the swinging component comprises a control component, and the swinging parameters acquired by the control component adjust the rigidity of each elastic component so as to apply excitation opposite to the swinging of the building envelope or the swinging component.

The step of adjusting the stiffness of the elastic member may specifically be changing the stiffness of the elastic member by stretching or compressing the length of the elastic member.

When the elastic part connected with the limit stop ring is compressed or stretched to different degrees, the horizontal position of the limit stop ring is correspondingly changed. In order to further reduce the traction force of the swing component on the top of the building envelope, the following control is further carried out.

In step S22, in addition to the rigidity adjustment, the following steps are performed: and in the swinging process of the swinging component, the length of each elastic component is adjusted according to the swinging parameters to change the position of the limit check ring so as to reduce the swinging amplitude or the swinging acceleration or the swinging frequency of the swinging component.

The circumferential clearance a between the swing component and the limiting check ring is correspondingly changed by changing the position of the limiting check ring, and the maximum displacement of the swing component swinging rightwards and leftwards from the lowest point is different in the swing direction, namely, the swing component does not perform simple harmonic vibration between the limiting check rings, and the energy of the swing component is smaller and smaller under the condition of the non-simple harmonic vibration, so that the acting force exerted on the top of the enclosure structure by the swing component is smaller and smaller, and the induction factor of the swing component on the transverse vibration of the enclosure structure is correspondingly weakened.

That is, a force opposite to the swinging direction is applied to the swinging member during the swinging process of the swinging member, for example, as shown in fig. 9, fig. 9 shows an embodiment in which 6 elastic members are provided, wherein the elastic members are respectively marked as: k1, K2, K3, K4|, K5, K6, along spacing retaining ring 13 periphery wall evenly arrange. When the cable 60 swings to the left in the 6 o' clock direction and does not swing to the maximum displacement, the position of the limit stop ring is moved by adjusting the length of the elastic component to block the swing of the cable 60. In the figure, the embodiment that the limiting retainer ring is fixed on the building envelope through six elastic components with central symmetry is given, when the cable 60 swings leftwards, the elastic component K1 can be extended, the elastic component K4 is shortened, and therefore unequal gaps are formed between the cable 60 and the limiting retainer ring, and the cable 60 vibrates in a non-simple mode in the limiting retainer ring. This may dissipate the swing kinetic energy of the cable 60, reducing at least one of the swing amplitude, acceleration and frequency of the cable 60.

The swing amplitude and acceleration of the cable 60 can be greatly reduced by alternately applying a lateral exciting force to the cable 60.

In a specific control method, the stiffness of each elastic component can be adjusted according to the pressure between the cable 60 and the limit stop ring, that is, the support assembly further includes a pressure sensor 21, and the pressure sensor 21 is disposed between the elastic component and the limit stop ring or between the elastic component and the tower 50. The pressure sensor in each supporting assembly can detect the pressure applied to the corresponding circumferential position of the limiting check ring, and then the length of the rigidity adjusting part is adjusted according to the acquired pressure values of different circumferential positions, so that the purpose of adjusting the rigidity of the elastic part is achieved. By adjusting the stiffness of the spring elements, the oscillation frequency and the oscillation amplitude of the cable 60 are controlled, i.e. the energy stored in the compression process is used by the spring elements to supply the cable 60 with the energy required to compensate for the transverse oscillation amplitude during the expansion. The magnitude of the different lateral vibration amplitudes and accelerations induced thereby to the tower 50 may be minimized. The stiffness of an elastic member, such as a spring, is the ratio of the load increase dF to the deformation increase d λ, i.e., the load required to generate a unit deformation, and the calculation formula of the stiffness of the spring is F' ═ dF/d λ. Here springs are chosen whose characteristic line is of the increasing type, the stiffness of which increases with increasing load.

Referring to fig. 11 to 13, fig. 11 is a structural diagram of a stiffness adjusting member according to an embodiment of the present invention; FIG. 12 is a block diagram of a spin-on screw mechanism in accordance with one embodiment of the present invention; fig. 13 is a control block diagram of an apparatus for suppressing lateral vibration of a building envelope and protecting a swinging member according to another embodiment of the present invention. In fig. 11 and 12, k denotes an elastic member.

Specifically, the rigidity adjusting member in the above embodiment may include a link and a driving member.

At least one of the two ends of the connecting piece is in threaded connection with the elastic component or the enclosure structure. That is, the connecting piece can be only in threaded connection with the elastic part and is in circumferential rotation connection with the enclosure structure; the connecting piece can also be only in threaded connection with the building envelope and in circumferential rotation connection with the elastic part. Of course, both ends of the connecting piece can be of a threaded structure and are respectively in threaded connection with the enclosure structure and the elastic component.

In a preferred embodiment, the connecting member may be a sleeve 31, inner walls of two end portions of the sleeve 31 are respectively provided with an internal thread, the rigidity adjusting member further includes a supporting member, an inner end portion of the supporting member has an external thread portion which is in threaded fit with a corresponding end portion of the sleeve 31, and an outer end portion of the supporting member is fixedly connected with an inner wall of the enclosure.

The driving member in the above embodiment may be a spin screw mechanism 30, and includes a housing 34, a coil 35, a rotating member, a first magnetic conductive member 391, a second magnetic conductive member 392, an electric conductive element, and an electric power source.

The housing 34 serves two primary purposes, one of which is to provide a supporting base for the installation of other components; and secondly, the device is matched with the enclosing structures such as the tower 50 and the like.

The coil 35 is provided on the peripheral wall of the housing 34, the rotating member is connected to the housing 34 so as to rotate circumferentially, and both ends of the rotating member are provided with screw portions. The sleeve 31 in the above embodiment corresponds to a rotating member, but of course, the rotating member in the spin screw mechanism 30 is not limited to the sleeve 31, and may be a screw or a rod-shaped structure with an external thread at one end and a cylindrical structure with an internal thread at the other end.

The second magnetic conductive member 392 is fixed to the peripheral wall of the rotating member with a certain gap m from the coil 35. The power supply is used to supply alternating current to the coil 35.

Taking the adjustment of the stiffness of the two elastic members in the swing direction as an example, by controlling the two sleeves 31 in the swing direction to rotate in opposite directions, the extension of the elastic member on one side and the compression of the elastic member on the other side can be realized, so as to force the cable 60 in symmetrical directions alternately.

The coil windings 35 may be disposed on the inner circumferential wall of the housing 34.

In one embodiment, the second magnetic conductive member 392 is an iron core, a plurality of conductive strips are embedded in a groove along the radial direction on the surface of the iron core, the conductive strips extend along the axial direction and are uniformly distributed at intervals along the circumferential direction of the rotating member, short-circuit rings are arranged at two end portions of the iron core, two end portions of each conductive strip are connected in a short-circuit mode through the corresponding short-circuit rings, and the two short-circuit rings and the conductive strips form the conductive element. As shown in fig. 12, the two end portions of each conductive strip are provided with a short-circuit ring 381 and a short-circuit ring 382, respectively. The conductive strip may be located opposite the coil winding 35. The greater the number of conductive strips, the greater the force that correspondingly drives the rotation of the rotating member.

In another embodiment, the second magnetically permeable member 392 is a core having a radially oriented slot in a surface thereof, and an electromagnetic coil is embedded in the slot. The winding formed by the electromagnetic coil can be led out by the aid of a slip ring and is externally connected with a rheostat or a frequency converter.

When the coil winding 35 of the present invention is energized, an alternating magnetic field is generated around the coil winding 35, a rotating magnetic field is generated in the air gap, and the magnetic lines of the magnetic field pass through the first and second magnetic permeable members 391 and 392. Induced current is generated in the conductive strip or the electromagnetic coil of the second magnetic conductive member 392, and then the current in the conductive strip or the electromagnetic coil obtains a rotation torque under the action of a rotating magnetic field, so that the sleeve 31 is driven to rotate circumferentially, the connection length of the threaded part of the sleeve 31 is increased or reduced, and the automatic forward rotation and reverse rotation of the sleeve 31 are realized by controlling the direction of the magnetic field of the coil winding 35, so that the connection length of the rotating member is increased or reduced, and the length of the elastic member is correspondingly compressed or stretched, thereby realizing the adjustment of the rigidity of the elastic member.

The second magnetically permeable member 392 may be a rotor core, where it is heat fitted to the outer peripheral wall of the rotating member.

In order to realize circumferential rotation of the rotating component, a bearing 36 may be further disposed between the housing 34 and the rotating component, and the rotating component is connected with the housing 34 in a circumferential rotation manner through the bearing 36. Both ends of the rotating member may be provided with bearings 36. The bearing 36 may be a two-row tapered roller bearing, a two-row ball bearing, or a combination of a one-row ball bearing and a one-row tapered roller bearing, which needs to overcome the axial thrust of the motor. The axial thrust of the motor comes from the adjustment of the distance between the threaded connection parts at the two ends of the sleeve 31.

Taking the rotating member as the sleeve 31 as an example, the spin screw mechanism 30 further includes a first shaft section 32 and a second shaft section 33, opposite ends of which are provided with external thread sections, and the external thread sections of the first shaft section 32 and the second shaft section 33 are respectively connected with the internal thread portions at two ends of the sleeve 31 in a matching manner.

Of course, for example, to change the length of the connection thread between the first shaft segment 32 and the sleeve 31 and between the second shaft segment 33 and the sleeve 31, a predetermined clearance must exist between the first shaft segment 32 and the second shaft segment 33. The other ends of the first shaft segment 32 and the second shaft segment 33 may be fixedly connected to the resilient member and the tower 50, respectively.

When the device works, the control part controls the sleeve 31 connected with each elastic part to rotate through the swing parameters so as to adjust the rigidity of each elastic part, and whether the rigidity of the elastic part is adjusted to a proper value or not is judged through the detection value of the pressure sensor, so that whether the sleeve 31 continues to rotate or not is further judged.

The spin screw mechanism 30 further comprises a positioning bracket 37, one end of the positioning bracket 37 is fixedly connected with the shell 34, and the other end of the positioning bracket 37 is provided with a mounting part for being matched and fixed with an external enclosure structure. The mounting portion may be configured according to the specific structure of the building envelope, for example, the positioning bracket 37 may be L-shaped, and include a horizontal arm and a vertical arm, the vertical arm is fixed to the sleeve 31, and the horizontal arm is fixed to the tower 50.

The self-rotating thread mechanism further comprises a frequency converter (not shown in the figure), a power supply is communicated with the coil 35 through the frequency converter, the rotation speed of the sleeve 31 can be controlled by controlling the magnitude of current led into the coil 35 through the frequency converter, and the speed of length adjustment of the elastic component is correspondingly controlled, so that transverse exciting force can be applied to swinging components such as the cable 60 and the like alternately.

Fig. 14 shows an embodiment in which 3 sets of devices with spin screw mechanisms for suppressing lateral vibration and protecting swinging components of the enclosure structure are disposed on the wind turbine generator system, where other structures of the wind turbine generator system may be the same as those in the prior art, and are not described herein again.

On the basis of the above embodiments, the present invention further provides a device for suppressing the lateral vibration of the enclosure and protecting the swinging component, which is as follows.

Referring to fig. 15 to 17, fig. 15 is a schematic structural view of an apparatus for suppressing lateral vibration of an enclosure and protecting a swinging member according to another embodiment of the present invention; FIG. 16 is a schematic diagram of a pressure sensor layer; fig. 17 is a schematic structural view of an actuator layer.

In another embodiment, the device for suppressing lateral vibrations of the enclosure and protecting the swinging member comprises an acquisition member, a control member and an actuator. The acquisition component is used for acquiring the swing parameters of the swing component. The actuator 40 functions to apply a force to the swinging member opposite to the swinging direction of the swinging member. The fixed part of the actuator may be fixedly connected to the enclosure and the actuating part of the actuator 40 applies a force to the rocking part.

And a control part for controlling the actuator 40 to operate according to the acquired swing parameters so as to make the swing part swing in a non-simple harmonic manner.

Taking the example of the swinging member swinging in a vertical plane, the actuator 40 may apply a horizontal force to the swinging member opposite to the swinging direction thereof before the maximum swinging amplitude is reached, so as to weaken the swinging of the swinging member, thereby reducing the swinging amplitude or the swinging acceleration of the swinging member, and changing the swinging frequency.

Specifically, the operating portion of the actuator 40 is fixedly connected to the swing end of the swing member, and taking the swing member as the cable 60 as an example, the operating portion of the actuator 40 is fixedly connected to the cable 60 sheath 14 of the cable 60.

Of course, the device may further include a limit stopper, which has the same function as the limit member in the above-described embodiment, and is used for limiting the swing amplitude of the swing member, and the swing end of the swing member such as the cable 60 is provided inside the limit stopper. The action part of the actuator 40 is fixedly connected with a limit check ring, and drives the limit check ring to move in the vertical swing plane.

The control part controls the actuator 40 to act according to the acquired swing parameters, and drives the limiting part to a preset position so that the swing part swings in a non-simple harmonic mode.

The actuator 40 can drive the limiting component to move in a horizontal plane, so that the limiting component can be adjusted to a proper position during the swinging process of the swinging component according to the swinging parameters to reduce the swinging amplitude or the swinging acceleration of the swinging component.

The number of the actuators 40 is at least two, and the actuators are symmetrically distributed along the circumferential center of the swing member.

The acquisition components are pressure sensors 22, and the number of the pressure sensors 22 is at least two, and the acquisition components are respectively used for detecting acting forces of different positions of the swing component and the surrounding structure in the swing process.

The pressure sensors 22 are uniformly distributed on the circumference of the swing part and the enclosure structure through a support 23 and are arranged in a layered and parallel mode with the actuator.

The support 23 may be a rigid support, and the inner end of the rigid support is connected to the swinging component or the cable 60 sheath 14 of the swinging component or the limit stop ring of the swinging component. The pressure sensor 22 is connected with the cable 60 or the rigid support and the limiting check ring through the rigid support, so that the swing pressure of the cable 60 can be effectively and quickly acquired, and the control accuracy is improved.

The actuator in the above embodiments may be connected to the swinging member or the limit stop of the swinging member by a spring.

Referring to fig. 18, fig. 18 is a flowchart of a control method for suppressing lateral vibration of a building envelope according to a third embodiment of the present invention.

The specific control method comprises the following steps:

s30, acquiring swing parameters of the swing component;

and S31, controlling the action of the actuator according to the acquired swing parameters in the swing process of the swing component so as to apply an acting force opposite to the swing direction of the swing component to enable the swing component to swing in a non-simple harmonic mode, and further reducing the swing amplitude, the swing acceleration or the swing frequency of the swing component.

Particularly, the circumferential gap a between the swinging component and the limiting check ring is correspondingly changed by changing the position of the limiting check ring, and the maximum displacement of the swinging component swinging rightwards and leftwards from the lowest point is different in the swinging direction, namely, the swinging component does not vibrate in a simple harmonic mode between the limiting check rings, and the energy of the swinging component is smaller and smaller under the condition of the non-simple harmonic vibration, so that the acting force exerted on the top of the enclosure structure by the swinging component is smaller and smaller, and the induction factor of the swinging component on the transverse vibration of the enclosure structure is correspondingly weakened.

The actuator structure may take many forms. In a preferred embodiment, the actuator may be configured as the spin screw mechanism 30 described in the above embodiments. The actuator may also be a telescopic cylinder or other power component.

Of course, the device for suppressing the lateral vibration of the building envelope and protecting the swinging component in this embodiment may further include the above-mentioned flexible bag, and will not be described in detail herein.

The device for inhibiting the transverse vibration of the enclosure structure and protecting the swinging component, the control method and the self-rotating thread mechanism provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A device for restraining lateral vibration of an enclosure and protecting swinging parts is characterized by comprising the following parts:

the first flexible bag (11) and the second flexible bag (12) are respectively arranged on collision surfaces of the enclosure structure and the swinging component; the first flexible bag (11) and the second flexible bag (12) are filled with fluid medium.

2. The apparatus for suppressing lateral vibration and protecting swinging members of a building envelope of claim 1, further comprising:

pressure adjusting means for adjusting the pressure of the fluid medium inside the first flexible bag (11) and/or the second flexible bag (12) to dampen lateral vibrations of the enclosure.

3. An apparatus for restraining lateral vibration of a building envelope and protecting a swinging member as defined in claim 2 further comprising a limiting member for limiting the swinging amplitude of the swinging end of the swinging member, wherein the limiting member is fixed to the building envelope, and the first flexible bag (11) is disposed at the limiting member.

4. An apparatus for restraining lateral vibration of a building envelope and protecting swinging parts according to claim 3, wherein said limit parts comprise a limit stop ring (13) and a support assembly for fixing said limit stop ring (13) to said building envelope; the first flexible bag (11) is arranged on the inner peripheral wall of the limiting retainer ring (13).

5. An apparatus for restraining lateral vibration of a building envelope and protecting swinging members as claimed in claim 4, wherein said supporting members are plural in number, and each of said supporting members is arranged uniformly in a circumferential direction of said retaining ring (13).

6. An apparatus for restraining lateral vibration of a building envelope and protecting swinging members according to claim 5, wherein each of the support members is an elastic support member (20) comprising an elastic member, and both ends of the elastic member are respectively connected to the limit retainer ring (13) and the building envelope.

7. An arrangement for suppressing lateral vibrations of a building envelope and protecting swinging parts according to claim 1, further comprising at least two resilient support members (20), each of said resilient support members (20) being arranged circumferentially of the swinging part, said resilient support members (20) comprising a resilient, resilient part, said resilient part being positioned between said swinging part and the building envelope.

8. An apparatus for restraining lateral vibration of a building envelope and protecting a swinging member of claim 7 wherein a sheath is fixed to a circumference of the swinging member and an inner end of each of the elastic members is fixedly connected to the sheath.

9. An apparatus for restraining lateral vibration of a building envelope and protecting swinging members according to claim 7, further comprising a limit stopper (13), wherein the swinging end of the swinging member is located inside the limit stopper (13) after being installed, and the inner end of each elastic member is fixedly connected to the limit stopper (13).

10. An apparatus for restraining lateral vibration of a building envelope and protecting swinging members in accordance with claim 9, wherein the elastic support assembly (20) further comprises a rigidity adjusting member for adjusting a length of the elastic member to change a rigidity thereof.

11. An apparatus for suppressing lateral vibration of a building envelope and protecting swinging members as claimed in any one of claims 2 to 10, further comprising:

and the control component is used for controlling the pressure regulating component to regulate the internal pressure of the first flexible bag (11) or/and the second flexible bag (12) according to the acquired swing parameters so as to apply opposite excitation to the swing component and control the swing frequency of the swing component to be far away from the natural frequency of the enclosure.

12. An apparatus for restraining lateral vibrations of a building envelope and protecting swinging members according to claim 11, wherein said control means adjusts the internal pressure of said first flexible bag (11) or/and said second flexible bag (12) according to said acquired swinging parameters so that the swinging direction of said swinging members is opposite to the swinging direction of said building envelope; or,

the control component adjusts the internal pressure of the first flexible bag (11) or/and the second flexible bag (12) according to the acquired swing parameters, so that the collision frequency of the swing component on the first flexible bag (11) or/and the second flexible bag (12) is reduced, or the collision pressure generated on the first flexible bag (11) or/and the second flexible bag (12) in the collision process is continuously reduced.

13. The apparatus for suppressing the lateral vibration of the enclosure and protecting the swinging component of claim 11 wherein the obtaining component is a vibration meter, and the swinging parameter is the swinging amplitude or the swinging acceleration or the swinging frequency of the top of the enclosure;

14. An apparatus for restraining lateral vibration of a building envelope and protecting swinging members according to any of claims 1 to 10, characterized in that the fluid medium filled inside the first flexible bag (11) and the second flexible bag (12) is gas or liquid.

15. An arrangement for restraining lateral vibrations of a building envelope and protecting swinging parts according to claim 1, characterized in that said first flexible bag (11) and said second flexible bag (12) are layered or combined layered structures.