Door assembly, tower and wind generating set

Abstract

The invention relates to a door assembly, a tower and a wind generating set, the door assembly comprises a door body, a suspension platform, a first damping device and a wind collecting assembly, the door body is provided with a ventilation opening communicating with a hollow cavity, the suspension platform is arranged in the hollow cavity, and the first damping device comprises a first elastic piece and a first movable piece; one end of the first elastic piece is connected to the hanging platform, the other end of the first elastic piece is connected with the first movable piece, the first movable piece is hung on the hanging platform through the first elastic piece, and the air collecting assembly is arranged at the ventilation opening and comprises a collecting piece and a flow guiding piece; the air flow collected by the collecting part is guided to the side where the first movable part is located and pushes the first movable part to swing relative to the suspension platform. According to the door assembly, the vortex resistance and vibration suppression effect can be improved, and the vibration suppression requirement of the wind generating set can be met.

Description

Technical Field

[0001] The present application relates to the field of wind power technology, and in particular to a door assembly, a tower and a wind turbine generator set. Background Art

[0002] For wind turbines, when wind blows over the tower, vortices will alternately be generated on both sides of the tower and detach from the tower surface. These alternating vortices will generate periodic fluctuating pressures on the tower that change along the flow and across the flow. The fluctuating pressure will cause the tower to vibrate periodically, which in turn will change the vortex release pattern of its wake, causing the tower to vibrate in a vortex-induced manner.

[0003] At present, the vortex-induced vibration of the tower mostly occurs during the hoisting process of the tower. In order to prevent the vortex-induced vibration of the tower, a damping device is currently used in the tower to suppress the vortex-induced vibration. However, with the increasing maturity of wind power technology, wind power generation equipment is becoming more and more powerful, and the towers used are getting taller and taller. The vibration suppression effect of the current damping device is limited, and it is difficult to meet the vibration suppression needs of the high and flexible tower of the wind turbine in a strong wind environment. Summary of the invention

[0004] The present application provides a door assembly, a tower and a wind turbine generator set, which can improve the anti-vortex vibration suppression effect of the damping device and meet the vibration suppression requirements of the wind turbine generator set.

[0005] On the one hand, according to an embodiment of the present application, a door assembly is proposed for a fan component, the door assembly and the side wall of the fan component enclose a hollow cavity, the door assembly comprising: a door body, a vent connected to the hollow cavity is provided on the door body; a hanging platform, arranged in the hollow cavity; a first damping device, the first damping device comprising a first elastic member and a first movable member, one end of the first elastic member is connected to the hanging platform, and the other end is connected to the first movable member, the first movable member is suspended on the hanging platform through the first elastic member; an air collecting assembly, arranged at the vent, the air collecting assembly comprising a collecting member and a guide member, the collecting member is connected to the door body, the guide member is connected to the collecting member and extends to the first movable member, so as to guide the airflow collected by the collecting member to the side where the first movable member is located and push the first movable member to swing relative to the hanging platform.

[0006] According to one aspect of an embodiment of the present application, it also includes a supporting platform, which is arranged in the hollow cavity and opposite to the suspension platform along a first direction. The first elastic member is arranged as an elastic structure, and the first movable member is configured to always be connected to the supporting platform during the swing process relative to the suspension platform; the first movable member is arranged as an oxygen generator, and the oxygen generator can be activated when the first movable member swings relative to the suspension platform and release oxygen into the hollow cavity.

[0007] According to one aspect of the embodiment of the present application, the first movable member further includes an airbag, the oxygen generator is disposed in the airbag, a pressure relief hole is opened on the airbag, and the pressure relief hole is communicated with the hollow cavity.

[0008] According to one aspect of the embodiment of the present application, the guide member is configured as a flexible tubular structure, one end of which is connected to the collecting member, and the other end of which is connected to the airbag.

[0009] According to one aspect of the embodiment of the present application, the door assembly further includes a locking member, which is disposed on the supporting platform, and the first movable member has a locked state in which it is locked with the locking member and an unlocked state in which it is disengaged from the locking member.

[0010] On the other hand, according to an embodiment of the present application, a tower is provided, comprising the door assembly of the above embodiment.

[0011] According to one aspect of the embodiment of the present application, the tower further includes two or more second damping devices, each of which is elastically connected to the side wall of the tower and is spaced apart from the first damping device on the door assembly along the circumference of the tower.

[0012] According to one aspect of the embodiment of the present application, the second damping device includes an elastic member and a second movable member, and the second movable member is suspended and elastically connected to the side wall of the tower through the elastic member.

[0013] On the other hand, according to an embodiment of the present application, a wind turbine generator set is provided, comprising the tower of the above embodiment.

[0014] According to one aspect of an embodiment of the present application, it also includes: a cabin, which is arranged at the top of the tower; an impeller, which is arranged on the cabin; a yaw system, which is arranged between the tower and the cabin and can make the cabin yaw relative to the tower; wherein the door assembly also includes an acceleration sensor and a control system, the acceleration sensor is arranged on the tower and is used to collect vibration information of the tower, and the control system is configured to control the yaw of the cabin through the yaw system when the vibration information is greater than a preset range, until the vibration information is within the preset range.

[0015] The door assembly provided in the embodiment of the present application includes a door body, a suspension platform, a first damping device and an air collecting assembly, wherein the first damping device includes a first movable part suspended on the suspension platform. When vortex-induced vibration occurs in the tower, the first movable part will swing relative to the suspension platform to utilize the inertial force of the first movable part in the opposite direction to suppress the response amplitude of the tower vibration. In addition, by arranging the air collecting assembly at the vent of the door assembly, the airflow outside the fan component can be collected by the collecting part, and the airflow collected by the collecting part can be guided to the side where the first movable part is located by the guide part to promote the first movable part to swing relative to the suspension platform, thereby further increasing the swing amplitude of the first movable part, improving the vibration suppression effect, and meeting the vibration suppression requirements of the high-flexible tower of the wind turbine generator set in a strong wind environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0017] Figure 1 is a schematic structural diagram of a door assembly according to an embodiment of the present application;

[0018] Figure 2 is a front view of a door assembly according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a first movable member of a door assembly in an unlocked state according to an embodiment of the present application;

[0020] Figure 4 is a partial enlarged view of the first movable member of the embodiment of the present application;

[0021] Figure 5 is a schematic diagram of a first movable member of a door assembly according to an embodiment of the present application being in a locked state;

[0022] Figure 6 is a cross-sectional view of a tower according to an embodiment of the present application;

[0023] Figure 7 It is a schematic structural diagram of a wind turbine generator set according to an embodiment of the present application.

[0024] In the attached figure:

[0025] 100-tower; 200-nacelle; 300-impeller; 400-yaw system; 500-solar cell;

[0026] 10-door assembly; 20-acceleration sensor;

[0027] 1-door body; 11-ventilation port; 12-door lock; 2-suspension platform; 3-first damping device; 31-first elastic member; 32-first movable member; 321-oxygen generator; 322-air bag; 3221-pressure relief hole; 4-wind collecting assembly; 41-collecting member; 42-flow guide member; 5-support platform; 6-locking member; 61-first locking part; 62-second locking part; 7-second damping device; 71-second elastic member; 72-second movable member;

[0028] Z - first direction.

[0029] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0031] The directional words appearing in the following description are all directions shown in the figures, and do not limit the door assembly, tower and wind turbine of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In order to better understand this application, Figures 1 to 7 The door assembly, tower and wind turbine generator set provided in the embodiments of the present application are described in detail.

[0033] See also Figures 1 to 3 The embodiment of the present application proposes a door assembly 10 for a fan component, wherein the door assembly 10 and the side wall of the fan component enclose a hollow cavity.

[0034] Among them, the door assembly 10 includes a door body 1, a hanging platform 2, a first damping device 3 and an air collecting assembly 4. The door body 1 is provided with a vent 11 connected to the hollow cavity. The hanging platform 2 is arranged in the hollow cavity. The first damping device 3 includes a first elastic member 31 and a first movable member 32. One end of the first elastic member 31 is connected to the hanging platform 2, and the other end is connected to the first movable member 32. The first movable member 32 is suspended on the hanging platform 2 through the first elastic member 31. The air collecting assembly 4 is arranged at the vent 11. The air collecting assembly 4 includes a collecting member 41 and a guide member 42. The collecting member 41 is connected to the door body 1, and the guide member 42 is connected to the collecting member 41 and extends to the first movable member 32 to guide the airflow collected by the collecting member 41 to the side where the first movable member 32 is located and push the first movable member 32 to swing relative to the hanging platform 2.

[0035] In the door assembly 10 of the embodiment of the present application, when the tower undergoes vortex-induced vibration, the first movable part 32 will swing relative to the suspension platform 2, so as to utilize the inertial force of the first movable part 32 in the opposite direction to suppress the response amplitude of the tower vibration. In addition, by providing the wind collecting assembly 4 at the vent 11 of the door assembly 10, the airflow outside the fan component collected by the collecting part 41 can be guided to the side where the first movable part 32 is located through the guide part 42 and the first movable part 32 is pushed to swing relative to the suspension platform 2, thereby further increasing the swing amplitude of the first movable part 32, improving the anti-vortex vibration suppression effect of the first damping device 3, and meeting the vibration suppression requirements of the high-flexible tower of the wind turbine generator set in a strong wind environment.

[0036] Optionally, the collecting member 41 can be configured as any existing wind collecting device disposed in the air duct. For example, the collecting member 41 can be configured as a wind collecting bag to collect the air outside the fan component into the hollow cavity, or the collecting member 41 can be configured as a negative pressure suction collection device to collect the airflow outside the fan component by suction, and guide the airflow to the side where the first movable member 32 is located to drive the first movable member 32 to swing.

[0037] It should be noted that the wind collecting assembly 4 and the first damping device 3 can be combined as a vibration suppression mechanism of the wind turbine generator set. The vibration suppression mechanism can be produced or sold separately as an independent component. For example, when a vent 11 is provided on the side wall of the fan component, the vibration suppression mechanism can also be installed at the vent 11 on the side wall of the fan component to suppress vibration. In the embodiment of the present application, by using the door body 1 as the support and installation interface of the vibration suppression mechanism, there is no need to open the side wall of the fan component, thereby avoiding affecting the structural strength and service life of the fan component, and ensuring the safe operation of the wind turbine generator set throughout its life cycle.

[0038] Optionally, the wind turbine component may include a tower and a nacelle 200, etc. For example, when the wind turbine component is configured as a tower, the door assembly 10 is configured as a tower door; when the wind turbine component is configured as a nacelle 200, the door assembly 10 is configured as a nacelle door.

[0039] For ease of description, the following description is made by taking the wind turbine component as a tower and the door assembly 10 as a tower door as an example.

[0040] It is understandable that, in addition to using the vibration suppression mechanism to reduce vibration, the door assembly 10 can also be used to reduce vibration. Specifically, when vortex-induced vibration occurs, the door assembly 10 can be controlled to be closed relative to the fan component. When the door assembly 10 is closed, due to the air flow and incompressibility of the air itself, it will act as a damper inside the tower, thereby reducing the vibration amplitude of the tower. Therefore, the closing of the door assembly 10 and the vibration suppression mechanism can work together to improve the vibration suppression effect.

[0041] When the door assembly 10 is opened, the damper formed by air inside the tower loses its effect. Optionally, the door assembly 10 may be provided with a door lock 12, so that when vortex-induced vibration occurs in the tower, the door assembly 10 can be locked relative to the fan component to prevent the door assembly 10 from being opened by mistake and affecting the vibration suppression effect.

[0042] See also Figure 3 and Figure 4 After the door assembly 10 is closed, a relatively closed environment is formed in the fan component. Therefore, in some optional embodiments, the door assembly 10 further includes a support platform 5, which is disposed in the hollow cavity and is disposed opposite to the suspension platform 2 along the first direction Z. The first movable member 32 is configured to always be connected to the support platform 5 during the swing process relative to the suspension platform 2. The first movable member 32 is configured as an oxygen generator 321, which can be activated when the first movable member 32 swings relative to the suspension platform 2 and release oxygen into the hollow cavity.

[0043] Therefore, when the tower undergoes vortex-induced vibration, the first movable member 32 can not only perform a damping effect to suppress the vortex-induced vibration, but also release oxygen through the oxygen generator 321 to solve the problem of oxygen deficiency inside the unit caused by closing the door assembly 10 during the vortex-induced vibration.

[0044] The oxygen generator 321 can be set as an oxygen candle, which is made by the principle of high-temperature decomposition of chlorate, and mainly includes oxygen-producing medicine blocks and oxygen filter materials, etc. The specific working principle is: when the oxygen generator 321 swings relative to the suspension platform 2, since the oxygen generator 321 is always in contact with the support platform 5, the oxygen generator 321 can generate heat by friction with the support platform 5, so that the oxygen-producing medicine blocks are decomposed and oxygen is released. The oxygen is purified by the oxygen filter material and discharged from the outlet directly for human breathing.

[0045] Optionally, a slide groove may be provided on a side surface of the support platform 5 facing the suspension platform 2 along the swinging direction, and the first movable member 32 may be provided with a slider matching the slide groove, so that during the swinging of the first movable member 32 relative to the suspension platform 2, the freedom of the first movable member 32 along the first direction Z can be limited by the slide groove to ensure that the first movable member 32 can always be in contact with the support platform 5 to generate oxygen through the oxygen generator 321.

[0046] In some optional embodiments, the first movable member 32 further includes an airbag 322, the oxygen generator 321 is disposed in the airbag 322, and a pressure relief hole 3221 is provided on the airbag 322, and the pressure relief hole 3221 is communicated with the hollow cavity. That is, the first movable member 32 includes the airbag 322 and the oxygen generator 321 disposed in the airbag 322, and by disposing the oxygen generator 321 in the airbag 322, the generated oxygen can be first stored in the airbag 322, and when the pressure in the airbag 322 is greater than a certain value, the oxygen will be released into the hollow cavity through the pressure relief hole 3221.

[0047] Therefore, the airbag 322 can play a certain buffering role, that is, the airbag 322 can release a certain amount of oxygen into the tower to supply the workers with breathing, and at the same time, it can reasonably control the oxygen content in the tower to avoid overoxygenation inside the tower and improve safety.

[0048] Optionally, the release pressure of the pressure relief hole 3221 can be set to 0.5MPa. When the pressure in the airbag 322 is less than or equal to 0.5MPa, the generated oxygen is stored in the airbag 322 for backup. When the pressure in the airbag 322 is greater than 0.5MPa, the oxygen is released into the hollow cavity through the pressure relief hole 3221 to supply the staff with breathing.

[0049] Among them, since the oxygen generator 321 is a consumable, a zipper structure can be provided on the airbag 322. When the oxygen production capacity of the oxygen-producing medicine block of the oxygen generator 321 is insufficient to meet the use demand, the oxygen generator 321 can be replaced by unzipping the zipper structure on the airbag 322, thereby eliminating the need to replace the entire first movable part 32, thereby reducing the use cost.

[0050] In some optional embodiments, the guide member 42 is configured as a flexible tubular structure, one end of which is connected to the collecting member 41, and the other end is connected to the airbag 322. By connecting the guide member 42 to the airbag 322, on the one hand, the first movable member 32 can be pushed to swing by forming an airflow, and on the other hand, the airflow entering from the guide member 42 can be collected in the airbag 322, so that the wind will not form convection inside and outside the fan components, thereby realizing the utilization of wind energy while also avoiding the vortex-induced vibration of the tower generated by wind power.

[0051] In addition, the airflow entering the airbag 322 from the guide member 42 can also be discharged from the pressure relief hole 3221, slowing down the wind force and providing breathing for the workers in the tower. Therefore, even if the oxygen generator 321 fails, fresh air can be guaranteed inside the tower to prevent suffocation.

[0052] Optionally, when more than two vents 11 are provided on the door body 1, the number of air collecting components 4 may be greater than or equal to the number of vents 11, and each vent 11 is correspondingly provided with a collecting piece 41, and is respectively connected to the airbag 322 through a guide piece 42.

[0053] See also Figures 3 to 5 In some optional embodiments, the door assembly 10 further includes a locking member 6 , which is disposed on the supporting platform 5 , and the first movable member 32 has a locked state with the locking member 6 and an unlocked state with the locking member 6 .

[0054] Figure 3 shows a schematic structural diagram of the first movable member 32 in an unlocked state, Figure 5 It shows a structural schematic diagram of the first movable member 32 in a locked state.

[0055] By setting the first movable member 32 to have an unlocked state and a locked state, when the tower does not experience vortex-induced vibration, for example, during the transportation of the tower, the first movable member 32 can be fixed to the support platform 5 through the locking member 6, thereby preventing the first movable member 32 from swinging back and forth under the action of the wind collection component 4 and affecting the vibration of the tower. In addition, when vortex-induced vibration occurs in the tower, the locking member 6 can be controlled to be unlocked, so that the first movable member 32 can swing back and forth relative to the suspension platform 2 under the push of the airflow of the wind collection component 4, thereby realizing the anti-vortex vibration suppression of the tower.

[0056] Furthermore, since the oxygen generator 321 is configured to be activated when the first movable part 32 swings relative to the suspension platform 2, the oxygen generator 321 will not generate oxygen when no vortex-induced vibration occurs in the tower, that is, when the first movable part 32 is in a locked state. The oxygen generator 321 will generate oxygen only when vortex-induced vibration occurs, that is, when the first movable part 32 switches from a locked state to an unlocked state. This allows the oxygen generator 321 to better match the internal environment of the tower, reduce the loss of the oxygen generator 321, and ensure the use effect.

[0057] The first movable member 32 can be unlocked manually or automatically. When the automatic unlocking is adopted, the door assembly 10 is further provided with an acceleration sensor 20 and a control system. The acceleration sensor 20 is configured to detect vibration information of the tower. The control system can control the locking member 6 to switch the first movable member 32 between the locked state and the unlocked state according to the detected vibration information.

[0058] Specifically, the control system is configured to lock the first movable member 32 on the support platform 5 through the locking member 6 when the vibration information is within the preset range, and to unlock the first movable member 32 when the vibration information exceeds the preset range. Compared with manual judgment, the above control method is simpler and more efficient, and the response is faster, so as to further improve the safety of the wind turbine generator set.

[0059] In some optional embodiments, the locking member 6 can be configured as a first locking portion 61 and a second locking portion 62 that are detachably connected. The first locking portion 61 can be disposed on the supporting platform 5, and the second locking portion 62 can be disposed on the first movable member 32. The locking and unlocking of the first movable member 32 can be achieved through the detachable connection between the first locking portion 61 and the second locking portion 62.

[0060] Optionally, the locking member 6 can be set as a mechanical locking structure or a magnetic locking structure. For example, when the locking member 6 is set as a mechanical locking structure, the first locking portion 61 and the second locking portion 62 can be set as locking ears. The locking member 6 also includes a latch, which is sequentially arranged on the first movable member 32 and the locking ears on the support platform 5 to achieve the locking of the first movable member 32. The latch can be inserted manually or automatically controlled by the automatic plug-in and pull-out pin structure to achieve automatic locking and unlocking of the first movable part.

[0061] See also Figure 6 The embodiment of the present application further provides a tower 100, comprising the door assembly 10 in any of the above embodiments, wherein the door assembly 10 and the side wall of the tower 100 enclose a hollow cavity.

[0062] When hoisting the tower 100, since the door assembly 10 of the tower 100 is provided with the first damping device 3 and the wind collecting assembly 4 in the above-mentioned embodiment, when vortex-induced vibration occurs in the tower 100, the wind collecting assembly 4 can collect the airflow outside the wind turbine components through the collecting member 41, and guide the airflow collected by the collecting member 41 to the side where the first movable member 32 is located through the guide member 42 to promote the first movable member 32 to swing relative to the suspension platform 2, thereby further increasing the swing amplitude of the first movable member 32, improving the anti-vortex vibration suppression effect of the tower 100, and meeting the vibration suppression requirements of the high-flexible tower 100 of the wind turbine generator set in a strong wind environment.

[0063] In some optional embodiments, the tower 100 further includes more than two second damping devices 7, each of which is elastically connected to the side wall of the tower 100 and is arranged at intervals from the first damping device 3 along the circumference of the tower 100. By arranging multiple second damping devices 7 at intervals along the circumference of the tower 100, the multiple second damping devices 7 and the first damping device 3 can cooperate to suppress the vortex-induced vibration of the tower 100. Optionally, the second damping device 7 can be set to any existing damping device, that is, it can achieve vibration reduction.

[0064] Optionally, the second damping device 7 can also be installed at a position of the tower 100 where the anti-vortex effect is better according to dynamic calculation. The damping device can be arranged at the bottom of the tower 100, or at other parts of the tower 100, that is, the damping device can be installed at any position of the tower 100, as long as the anti-vortex vibration reduction of the tower 100 can be achieved.

[0065] See also Figure 6 In some optional embodiments, the second damping device 7 includes a second elastic member 71 and a second movable member 72, and the second movable member 72 is suspended on the suspension platform 2 through the second elastic member 71. The structure of the second movable member 72 may be the same as that of the first movable member 32 in the above embodiment, and the structure of the second elastic member 71 may be the same as that of the first elastic member 31, thereby simplifying the setting of the damping device.

[0066] See also Figure 7 The embodiment of the present application further provides a wind turbine generator set, including the tower 100 of the above embodiment. Since the wind turbine generator set includes the tower 100 of the above embodiment, during the shutdown operation and maintenance of the wind turbine generator set, the wind collecting component 4 and the vibration suppression mechanism formed by the first damping device 3 can also be used to suppress vortex vibration, thereby ensuring the safe operation of the wind turbine generator set during its life cycle and improving the operation and maintenance efficiency of the set.

[0067] In some optional embodiments, the wind turbine generator set further includes a nacelle 200, an impeller 300 and a yaw system 400, wherein the nacelle 200 is disposed at the top of the tower 100, the impeller 300 is disposed on the nacelle 200, and the yaw system 400 is disposed between the tower 100 and the nacelle 200, and can make the nacelle 200 yaw relative to the tower 100. Among them, the door assembly 10 further includes an acceleration sensor 20 and a control system, wherein the acceleration sensor 20 is disposed on the tower 100 and is used to collect vibration information of the tower 100, and the control system is configured to control the nacelle 200 to yaw through the yaw system 400 when the vibration information is greater than a preset range, until the vibration information is within the preset range.

[0068] During the shutdown operation and maintenance of the wind turbine generator set, in addition to the vibration suppression by the vibration suppression mechanism and the door assembly 10, the yaw of the nacelle 200 relative to the tower 100 can also be controlled to change the direction of the impeller 300, so that the wind can be affected by the nacelle 200 and the blades of the impeller 300, and it is difficult to form a stable vortex that causes tower resonance, thereby realizing the anti-vortex vibration suppression of the wind turbine generator set.

[0069] Optionally, a solar cell 500 may be provided on the wind turbine generator set to be used for transmission of control signals and power supply of the acceleration sensor 20 and the control system, so as to achieve yaw steering of the wind turbine generator set.

[0070] Therefore, the wind turbine generator set in the embodiment of the present application has the technical effect of the technical solution of the converter in any of the above embodiments, and the explanation of the structures and terms that are the same or corresponding to the above embodiments will not be repeated here.

[0071] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A door assembly (10) for a fan component, wherein the door assembly (10) and the side wall of the fan component enclose a hollow cavity, characterized in that: The door assembly (10) comprises: A door body (1), wherein the door body (1) is provided with a ventilating opening (11) communicating with the hollow cavity; A suspension platform (2) is arranged in the hollow cavity; A first damping device (3), the first damping device (3) comprising a first elastic member (31) and a first movable member (32), one end of the first elastic member (31) being connected to the suspension platform (2), and the other end being connected to the first movable member (32), and the first movable member (32) being suspended on the suspension platform (2) via the first elastic member (31); An air collecting component (4) is arranged at the vent (11), and comprises a collecting component (41) and a flow guiding component (42), wherein the collecting component (41) is connected to the door body (1), and the flow guiding component (42) is connected to the collecting component (41) and extends toward the first movable component (32) so as to guide the airflow collected by the collecting component (41) to the side where the first movable component (32) is located and push the first movable component (32) to swing relative to the suspension platform (2).

2. The door assembly (10) according to claim 1, characterized in that It also includes a support platform (5) disposed in the hollow cavity and arranged opposite to the suspension platform (2) along a first direction, and the first movable member (32) is configured to always be connected to the support platform (5) during the process of swinging relative to the suspension platform (2); The first movable part (32) is provided with an oxygen generator (321), and the oxygen generator (321) can be activated when the first movable part (32) swings relative to the suspension platform (2), and release oxygen into the hollow cavity.

3. The door assembly (10) according to claim 2, characterized in that: The first movable member (32) further comprises an air bag (322), the oxygen generator (321) is arranged in the air bag (322), a pressure relief hole (3221) is provided on the air bag (322), and the pressure relief hole (3221) is communicated with the hollow cavity.

4. The door assembly (10) according to claim 3, characterized in that The flow guide (42) is configured as a flexible tubular structure, one end of which is connected to the collecting member (41) and the other end of which is connected to the airbag (322).

5. The door assembly (10) according to claim 2, characterized in that: The door assembly (10) further comprises a locking member (6), wherein the locking member (6) is arranged on the supporting platform (5), and the first movable member (32) has a locked state in which it is locked with the locking member (6) and an unlocked state in which it is disengaged from the locking member (6).

6. A tower (100), characterized in that: It comprises the door assembly (10) according to any one of claims 1 to 5.

7. The tower (100) according to claim 6, characterized in that: The tower (100) further comprises more than two second damping devices (7), each of which is elastically connected to a side wall of the tower (100) and is spaced apart from the first damping device (3) along the circumference of the tower (100).

8. The tower (100) according to claim 7, characterized in that: The second damping device (7) comprises a second elastic member (71) and a second movable member (72); the second movable member (72) is suspended on the suspension platform (2) via the second elastic member (71).

9. A wind turbine generator set, characterized in that: The method comprises a tower (100) as claimed in any one of claims 6 to 8.

10. The wind turbine generator set according to claim 9, characterized in that: Also includes: A nacelle (200) is arranged on the top of the tower (100); An impeller (300) is disposed on the nacelle (200); a yaw system (400) disposed between the tower (100) and the nacelle (200) and capable of causing the nacelle (200) to yaw relative to the tower (100); The door assembly (10) further comprises an acceleration sensor (20) and a control system, wherein the acceleration sensor (20) is arranged on the tower (100) and is used to collect vibration information of the tower (100), and the control system is configured to control the yaw of the cabin (200) through the yaw system (400) when the vibration information is greater than a preset range until the vibration information is within the preset range.

Images