Bearing arrangement for a wind turbine and wind turbine

Abstract

A bearing assembly for a wind turbine (100) comprises: - a bearing (204), - a bearing housing (201), wherein the bearing housing (201) contains an inner space (203) in which the bearing (204) is disposed, and wherein the bearing housing (201) comprises an opening (206) for draining lubricant (300) from the inner space (203), - a chamber (210), wherein the chamber (210) comprises a fluid connection (211) with the opening (206), in which a damping space (217) is formed within the chamber (210) for regulating the flow of lubricant leaving the inner space (203).

Description

Bearing arrangement for a wind turbine and wind turbine The description relates to a bearing arrangement for a wind turbine, specifically a rotor bearing arrangement. The description further relates to a wind turbine, specifically a wind turbine comprising a bearing arrangement as described herein. A wind turbine may include a rotor, which in turn includes a rotating rotor unit with multiple rotor blades. The rotor blades transform wind energy into drive torque that powers the generator through a drive train. US patent 2022 / 042592 A1 relates to a system comprising a bearing, a lubricant line, a reservoir, and a sensor. The lubricant line is designed to introduce lubricant from a gap between the bearing's bearings into the reservoir. The reservoir includes an outlet or overflow. The system includes a lubricant sump and a device for introducing lubricant from the sump into the bearing's bearing space. Patent EP 2,657,556 A2 relates to a grease supply system that includes a discharge part that forcibly discharges grease from a rolling bearing. Patent EP 4,166,802 A1 relates to a fluid container for collecting lubricant from a wind turbine bearing. The fluid container comprises a body having a fluid outlet for draining the lubricant stored in the first chamber and the drainage means. US patent 2010 / 322543 A1 relates to a bearing arrangement with an outer and an inner ring that can rotate relative to each other, and bearing bodies, especially balls, located between the outer and inner rings. A fuel distributor and an intake and exhaust device are incorporated in such a bearing arrangement. It is desirable to provide a bearing arrangement that ensures reliable operation. Furthermore, it is desirable to provide a wind turbine that ensures reliable operation. The invention relates to a bearing arrangement according to claim 1 and to a wind turbine according to claim 14. Embodiments of the description disclose a bearing arrangement for a wind turbine. The bearing arrangement comprises a bearing. The bearing arrangement comprises a bearing housing. The bearing housing contains an interior space in which the bearing is disposed. The bearing housing includes an opening configured to drain lubricant from the interior space. The bearing arrangement includes a chamber. The chamber has a fluid connection to the opening. A buffer space is formed within the chamber. In particular, the buffer space is arranged within the chamber. In particular, the buffer space is defined by the chamber. The buffer space is arranged within the chamber to regulate the flow of lubricant leaving the interior space. For example, the bearing arrangement is a rotor bearing arrangement of a wind turbine. In one embodiment, the rotor bearing arrangement, which includes a chamber for regulating the flow of lubricant from the internal space, can correspond to either the rotor side bearing or the gearbox side bearing. The bearing arrangement, and in particular the bearing itself, is lubricated, for example, with grease or another lubricant, such as oil. It is important to contain the required amount of lubricant within the bearing housing, in the internal space. An insufficient amount of lubricant in the bearing leads to increased wear and premature failure. On the other hand, high splash losses lead to an increase in temperature and, consequently, a reduction in the base viscosity, resulting in a thinner film and, ultimately, premature failure.Therefore, it is important to ensure sufficient lubrication, avoid lubricant shortages, and minimize splash losses. Uncontrolled lubricant leakage, particularly leakage through a bearing seal, must be prevented. The opening is therefore provided to allow controlled lubricant drainage. The chamber with the buffer space described acts as a restrictor or regulator to dampen the lubricant's outflow. During operation, as the lubricant flows through the chamber, it loses momentum and / or energy. The lubricant deposits and forms a barrier, preventing it from escaping the interior space. The lubricant does not flow like a Newtonian fluid, but rather like a viscous or even plastic structural fluid.This means, for example, that the lubricant can remain in a specific shape and position without flowing until a sufficient impulse or stimulus triggers movement. Therefore, the chamber allows for a controlled release of lubricant, preventing undesirably high levels of output. The amount of lubricant inside the bearing can be reliably maintained within predetermined limits. The choice of the chamber's shape and dimensions can depend on the bearing housing capacity, so that the impulses generated in the lubricant by the rotating bearing can be minimized to the desired extent based on the operating characteristics. According to one embodiment, the camera is at least partially located outside the bearing housing. Alternatively or additionally, the camera is at least partially located inside the bearing housing. Depending on the bearing housing design and bearing arrangement, the camera can be located in a free space within the bearing housing. Therefore, the available space can be used efficiently. According to one embodiment, the chamber comprises an inlet opening and an outlet opening. The inlet opening can be connected to the outlet opening. Lubricant exiting the interior space can be reliably transferred to the chamber through the inlet opening. Lubricant exiting the chamber can be reliably guided to a collection container through the outlet opening. According to one embodiment, the cross-section of the chamber's inlet opening differs from the cross-section of the buffer space. The cross-section of the inlet opening may be smaller than the cross-section of the buffer space. Alternatively, the cross-section of the inlet opening may be larger than the cross-section of the buffer space. According to one embodiment, the chamber comprises a first tube. The first tube is connected to one of the inlet and one of the outlet openings. The other of the inlet and outlet openings is in fluid communication with the buffer space. The first tube has a cross-section that differs from the cross-section of the buffer space. Therefore, the chamber can be designed as a siphon. According to some embodiments, the bearing arrangement includes a hose. The hose can be seamlessly connected between the chamber and the opening. This allows for the arrangement of the chamber with respect to the opening and the bearing housing. According to some embodiments, the bearing arrangement includes an outlet hose. The outlet hose can be smoothly connected to the chamber at a first end. The outlet hose includes a second end for releasing the lubricant into the collection container. This allows the outlet opening to be positioned at a distance from the collection container. According to one embodiment, at least one opening is defined in the bearing housing. The opening is in fluid communication with the chamber through this opening. For example, the opening is a hole in the bearing housing. According to one embodiment, the chamber includes a vent. The chamber can be ventilated in a controlled manner by using the vent. According to one embodiment, the bearing arrangement comprises a thermal control module for regulating the temperature of a chamber. For example, the thermal control module comprises insulation to keep the chamber's interior warmer than its exterior. Alternatively or additionally, the thermal control module comprises a heater for heating the chamber. Alternatively or additionally, the thermal control module comprises a cooler for cooling the chamber. Therefore, the thermal control module allows the chamber temperature to be controlled based on external ambient conditions to maintain at least one of the desired properties of the lubricant, such as density, viscosity, and other properties. According to some embodiments, the bearing arrangement includes a damper. The damper is arranged within the chamber. For example, the damper comprises at least one baffle, a perforated plate, a mesh, a gap, a baffle plate, and a guide vane. The desired damping effect and lubricant flow regulation can be achieved with the damper. The damper, for example, is selected based on the environmental conditions at the wind turbine installation site and / or the type of lubricant used. According to some embodiments, the damper comprises a plurality of dampers arranged within the chamber. The dampers may be of the same or different types. The dampers may have different shapes or the same shape. The dampers may be arranged in parallel, in series, and / or inclined relative to each other.The shock absorbers can be arranged in a staggered, eclipsed and / or inclined manner. According to some embodiments, the damper comprises a spring that is deflected toward the opening. The spring provides a resistive force acting against the flow of lubricant leaving the interior space. Therefore, the pressure and momentum of the lubricant can be controlled by the spring. It is possible to have a spring with an adjustable preload, so that the spring inclination is controllable and adjustable during operation. Alternatively or additionally, the damper comprises a baffle or a plurality of baffles that can be moved to control a resistive force against the flow of lubricant. For example, the baffle is connected to the spring and can rotate around a pin joint. If the flow and / or pressure are high, for example, the baffles move so that the opening for the lubricant flow is smaller or even closed to stop the flow of lubricant.Therefore, lubricant flow control is possible by adjusting the degree of damper deflection. Other embodiments of the description provide a wind turbine, wherein the wind turbine comprises a nacelle. The wind turbine comprises a bearing arrangement according to one of the described embodiments. The rotor bearing arrangement is disposed in the nacelle. The present invention will be further described with reference to the accompanying drawings. In the drawings, elements of the same structure and / or functionality may be referenced using the same reference symbols. It should be understood that the embodiments shown in the figures are illustrative representations and are not necessarily drawn to scale. Figure 1 is a schematic view of a wind turbine according to one embodiment. Figures 2 to 14 are schematic views of rotor bearing arrangements and their details according to different embodiments. Although the invention is susceptible to various modifications and alternative forms, its details have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. Rather, the intention is to cover all modifications that fall within the scope of the invention as defined by the appended claims. As shown in Figure 1, a wind turbine 100 comprises a tower 102. The tower 102 is connected to a foundation 104 fixed in the ground. The base 104 is formed and supported by the ground. A nacelle 106 is arranged at an upper end of the tower 102 opposite the foundation 104. The nacelle 106 houses the drive train, among other components and subassemblies. Within the nacelle 106, for example, a generator is arranged which is connected via the drive train to a rotor 108.The drive train comprises, for example, a gearbox and a rotor stem 105 (Figure 3). The rotor 108 comprises several rotor blades 110. The rotor blades 110 are mounted on a rotor hub 112. The rotor hub 112 is connected to the rotor stem 105. The rotor 108 is activated by an airflow, such as wind. The rotational motion of the rotor 108 is transmitted through the drive train to the generator. The generator converts the mechanical output of the rotor 108 into electrical energy. The wind turbine 100 comprises a bearing arrangement 200. According to the embodiments shown, the bearing arrangement 200 is a rotor bearing arrangement. The rotor shaft 105 is rotatably supported by the bearing arrangement 200. In one embodiment, the rotor bearing arrangement 200 can correspond to either the rotor side bearing arrangement or the gearbox side bearing arrangement, supporting the shaft on the rotor side and the gearbox side, respectively. Figure 2 shows a bearing arrangement 200 according to one embodiment. The bearing arrangement 200 comprises a bearing housing 201. The bearing housing 201 contains an inner space 203. A bearing 204 is located in the inner space 203. The inner space 203 can receive a lubricant, including, but not limited to, grease and / or lubricating oil from a lubricant source. The bearing 204 comprises an inner ring, an outer ring, and bearing elements 205 that allow relative rotation between the inner and outer rings. The inner ring can be connected to the stem 105, and the outer ring can be connected to the bearing housing 201. The internal space 203 is sealed by a bearing cover 202 on the front and / or rear side of the bearing housing 201 during operation, wherein the front side corresponds, for example, to a side facing or near the gearbox (not explicitly shown) and the rear side corresponds, for example, to a side opposite or away from the gearbox. In another example, the front side corresponds to a side facing or near the rotor 108 and the rear side corresponds, for example, to a side opposite or away from the rotor 108. The bearing housing 201, and in particular the bearing cover 202, comprises an opening 206. The opening 206, which may be a drain hole defined in the bearing housing, provides a passage through the bearing housing 201.The opening 206, in particular, can be arranged in a lower half of the bearing housing 201 that is adjacent to the lower part 231 of the inner space 203. In one embodiment, the opening 206 can serve as a conduit between the inner space of the bearing 203 and the outside of the bearing. Lubricant 300 is provided in the internal space 203 to lubricate the bearing 204 and, in particular, the bearing elements 205. Lubricant 300 specifically comprises grease. Lubricant 300 is supplied in the inner space 203 at a desired lubricant level 301 (Figure 3). In particular, the desired lubricant level 301 reaches an upper hemispherical portion 229 of the bearing housing 201, which is arranged between the center and the upper portion 232. Old or dirty lubricant 300 can be drained through opening 206 out of inner space 203. Alternatively or additionally, if there is too much lubricant 300 in inner space 203, this lubricant 300 can be released in a controlled manner through opening 206. According to some embodiments of the description, opening 206, which may also be called the "drain hole 206," can prevent the uncontrolled release of lubricant 300 from inner space 203. Furthermore, a chamber 210, which provides a buffering effect and regulates the lubricant flow, can ensure that a sufficient quantity of lubricant 300 is retained within inner space 203. This chamber 210 is described in more detail below. The chamber 210 may also be called the "sedation chamber 210." Figure 3 shows a first example of chamber 210 comprising an inlet opening 213 and an outlet opening 214. The inlet opening 213 can be fluidly connected to opening 206. Therefore, the lubricant 300 reaches a buffer space 217 (Figure 5) of chamber 210 through opening 206 and the inlet opening 213 of chamber 210. Chamber 210 comprises a fluid connection 211 with opening 206, such that opening 206 is in fluid communication with the buffer space 217. This provides fluid communication between the interior space 203 and the buffer space 217. For example, an outlet hose 222 is connected to the outlet opening 214 of chamber 210. A first end 223 of the outlet hose 222 is connected to the outlet opening 214. A second, opposite end 224 of the outlet hose 222 is in fluid communication with a collection container 225. The collection container 225 is provided to collect the lubricant 300 that drains from the interior space 203 through chamber 210 and the outlet hose 222. The chamber 210 comprises a chamber housing 216 surrounding the cushioning space 217. The chamber housing 216 defines the cushioning space 217. In one embodiment, the chamber housing 216 delimits the shape of the cushioning space 217 within the chamber 210. Furthermore, in the illustrative embodiment shown in Figure 3, the outlet opening 214 may be located vertically above the inlet opening 213. This allows the lubricant entering the chamber 210 through the inlet opening 213 to settle within the chamber 210, thereby losing momentum and / or energy, resulting in cushioning. When the lubricant fills to a predetermined level within the chamber 210, it exits through the outlet opening 214 into the outlet hose 222. According to the example in Figure 3, the cross-sectional area 219 of the damping space 217 is larger than the cross-sectional area 218 of the inlet opening 213. According to other examples, the cross-sectional area of ​​the inlet opening 218 is larger than the damping space 219. The opening 206 may be located in a lower hemispherical portion 230 of the bearing housing 201, which is arranged between the center and the lower portion 231. During operation, lubricant 300 exits the inner space 203 and enters the buffer space 217 through opening 206 and inlet opening 213. Opening 206 and inlet opening 213 may serve as a nozzle and / or regulator. Lubricant 300 loses momentum as it flows from the inner space 203 to the buffer space 217. Lubricant 300 is deposited within the buffer space 217. In one embodiment, lubricant 300 may lose momentum and / or energy as it flows through or is deposited within the buffer space 217. The lubricant 300 thus collected / deposited within the buffer space 217 acts as a barrier to additional lubricant 300 attempting to exit the inner space 203.If lubricant 300 reaches the height of the outlet opening 214, which is located above the inlet opening 213, lubricant 300 flows out through the outlet hose 222. Because lubricant 300 has a low viscosity, similar to that of a plastic fluid, it remains in the buffer space 217 unless there is additional momentum or energy. In other words, lubricant deposited within the buffer space 217 that lacks sufficient momentum and / or energy will resist exiting through the outlet hose 222 unless there is additional momentum or energy. In this way, the flow of lubricant out of the inner space 203 can be regulated. In one embodiment, lubricant 300 does not return to the inner space 203. Upon entering the comparatively large damping space 217 with cross-section 219 through the comparatively small openings 206, 213 with cross-section 218, the impulses provided by the movable bearing 204 are significantly throttled. Therefore, the outflow of lubricant 300 caused by these impulses is dampened. With the chamber 210, the clearance in the inner space 203 can be reduced because the chamber 210 can compensate for the increased thrust created by the closed wall next to the movable bearing 204. The reduced clearance allows for a reduction in the amount of lubricant 300 required for initial filling, resulting in cost savings. The reduced clearance also leads to greater movement of the lubricant 300 during operation. Therefore, the lubricant 300 mixes better and remains more fluid. Feedback is improved, and the overall lubrication regime is enhanced. This reduces the risk of failure, extends the service life of the bearing arrangement 200, and reduces servicing costs. The size of chamber 200, in particular the cross-section 218 of the inlet opening 213 and the cross-section 219 of the cushioning space 217, can be easily adapted to different climates or different types of lubricant 300. Readjustments or changes during operation, for example, due to field experience, can also be easily made. Chamber 300 is easily accessible in those instances where chamber 210 is arranged on the outside 207 of the bearing housing 201. This allows, for example, lubricant sampling in a more controlled and reproducible manner by taking samples from a defined area of ​​chamber 210 where particles, especially larger ones, will settle in the cushioning space 217. These particles can then be collected, for example, using a magnet or other means, outside of chamber 210. Figure 4 shows a cross-section of a detail of bearing arrangement 200. Chamber 210 is arranged on one side of the bearing housing 201 that faces the gearbox (not explicitly shown), for example. A seal 233 is arranged to seal the internal space 203, such that the lubricant 300 remains in the internal space 203. Chamber 210 is arranged outside the seal 233. In particular, the seal 233 may be a touch seal that is in direct contact with the stem 105. The seal 233 may have a shape that reduces the clearance between the bearing element 205 and the seal 233 because chamber 210 dampens pressure fluctuations. Figure 5 shows the chamber 210 according to one embodiment. The dampers 212 are arranged within the chamber housing 216 to regulate the flow of lubricant through the damping space 217 from the inlet opening 213 to the outlet opening 214. Figure 5 shows three dampers 212. The number of dampers 212 can vary; for example, only one damper 212, two dampers 212, or more than three dampers 212 may be provided. The number of dampers 212 depends on the desired damping effect. Damper 212, for example, is a baffle. Alternatively or additionally, damper 212 is a perforated plate. Alternatively or additionally, damper 212 is a mesh. Alternatively or additionally, damper 212 is a hollow space. Alternatively or additionally, damper 212 is a baffle plate. Alternatively or additionally, damper 212 is a guide vane. Alternatively or additionally, damper 212 may be spring-supported. Other shapes, designs, or types of dampers 212 are possible, configured and arranged to dampen the flow of lubricant through the damping space 217. All dampers 212 within chamber 210 may be of the same type, or different types of dampers 212 may be arranged within chamber 210. For example, the damper 212 may be aligned transversely to the lubricant flow directions. The dampers may have different shapes or the same shape. For example, the dampers may be plate-shaped with straight edges or vane-shaped with curved geometry. Furthermore, the dampers may be arranged in parallel, in series, and / or at an angle to each other. Additionally, the dampers may be arranged in a staggered, overlapping, and / or inclined manner relative to each other. In one embodiment, the damping space 217 can be defined by the flow path formed between successive dampers. The lubricant flowing through this flow path loses momentum and / or energy, resulting in the damping of pulsations in the lubricant. The inlet opening 213 and the outlet opening 214 are arranged separated from each other by a distance 215. In particular, the outlet opening 214 is arranged above the inlet opening 213. Figure 6 shows another example of the bearing arrangement 200. The chamber 210 comprises a first tube 220 comprising the inlet opening 213 adjacent to the opening 206. The first tube 220 comprises a cross-section 221 that is smaller than the cross-section 219 of the damping space 217. The first tube 220 is arranged within the chamber housing 216. During operation, the lubricant 300 enters the damping space 217 through the first tube 220. The first tube 220 and the chamber 210 are arranged as a siphon. The outlet opening 214 is arranged in the chamber housing 216. The dampers 212 are arranged in the damping space 217 between the first tube 220 and the chamber housing 216. A vent 227 is provided at the top of chamber 210, specifically at the top of chamber housing 216. In some other examples, a specific vent 227 is not provided. The vent 227 is provided to evacuate and remove air that, for example, escapes from the inner space 203 into chamber 210. The air drawn out of the inner space 203 can be collected and separated within chamber housing 216 and then finally vented through the vent 227. This prevents excessive lubricant leakage due to trapped air. A principal longitudinal extension direction of the chamber housing 216 and the first tube 220 runs along a vertical direction Z. The inlet opening 213 and the outlet opening 214 are arranged along a horizontal direction. The inlet opening 213 and the outlet opening 214 are arranged opposite each other along the horizontal direction. In one embodiment, the outlet opening 214 may be at a different height than the inlet opening 213, for example, slightly above or below the location of the inlet opening 213. In another embodiment, pulsation damping in the lubricant may be effected by the flow of lubricant through the first tube 220 and / or by increasing the lubricant in the damping space 217 through the dampers 212. Figure 7 shows another example of the bearing arrangement 200. The inlet opening 213 is arranged in the chamber housing 216 to connect to the chamber 210 at one end and to the opening 206 at the opposite end. The first tube 220 housed in the chamber 210 comprises the outlet opening 214. During operation, lubricant 300 enters the damping space 217 through the inlet opening 213 and rises within the first tube 220, while also rising within the chamber 210 by passing through the dampers 212. Lubricant 300 exits the chamber housing 216 through the first tube 220 from the outlet opening 214 after passing through the dampers 212. In a further embodiment shown in Figure 8, a hose 209 can be provided between the opening 206 and the inlet opening 213. This is possible in the example shown, in which the inlet opening 213 is formed in the chamber housing 216. The hose 209 can also be provided in the other described examples, for example, as shown in Figures 3 and 6. In particular, hose 209 is a flexible hose that is connected between the damping space 217 and the opening 206. Hose 209 allows for an arrangement of the camera housing 216 separate from the opening 206 of the bearing housing 201. As shown in Figure 9, the bearing arrangement 200 may include a thermal control module 228. According to some embodiments, the thermal control module 228 comprises passive thermal insulation. Alternatively or additionally, the thermal control module 228 comprises electrical heating and / or cooling. The thermal control module 228 is arranged to control the temperature within the chamber housing 216, in particular the temperature of the lubricant 300 in the cushioning space 217. By controlling the temperature, the desired viscosity and / or other properties of the lubricant 300 can be achieved. The thermal control module 228 may be provided in the various embodiments of the bearing arrangement 200, as shown, for example, in the other figures. As shown in Figure 10, the main longitudinal extension of the chamber 210 may be arranged more horizontally than vertically. The camera housing 216, for example, is connected to the bearing housing 201 on a lower side of the bearing housing 201. The bearing housing 201 comprises one or more openings 206, 226 arranged along the vertical Z direction to connect the inner space 203 with the damping space 217. The inlet opening 213 is seamlessly connected to the opening 226. Figures 11 to 13 show examples where chamber 210 is arranged within the interior space 203. For example, chamber 210 is integrated into the bearing cover 202. The free space within the bearing housing 201 can be used as chamber 210. The inlet opening 213 forms part of the bearing cover 202, and the lubricant 300 is guided between the inlet opening 213 and the outlet opening 214 along the bearing cover 202. It is also possible to arrange chamber 210 in the bearing cover 202 on one side opposite the bearing elements 205 along the horizontal direction. As shown in Figure 13, it is also possible to increase the length of the buffer space 217 within the bearing housing 202 by providing a channel design comprising one or more changes of direction. Starting at the inlet opening 213, a lubricant flow direction 302 of the lubricant 300 is first directed to the left of Figure 13 and then changes such that the lubricant flow direction 302 is directed to the right of Figure 13 before the lubricant 300 exits the buffer space 217 through the outlet opening 214. Figure 14 shows an embodiment of the bearing arrangement 200 in which the chamber 210 is arranged along an axial direction of the stem 105. The chamber housing 216 can be arranged independently of the bearing housing 201, separate from the bearing housing 201. The chamber 210 can be formed in the style of a silencer, wherein the cross-section 219 of the damping space 217 is larger than the cross-section 218 of the inlet opening 213 and, for example, of the hose 209. The bearing arrangement 200, with the chamber 210, provides the cushioning space 217. This reduces the risk of failure of the bearing 204. The outlet flow of the lubricant 300 can be controlled, and thus the quantity of lubricant 300 can be increased and the lubricant level 301 can be maintained at the desired height. Reference signs 100 Wind turbine 102 Tower 104 Foundation 105 Stem 106 Gondola 108 Rotor 110 Rotor blade 112 Rotor Hub 200 Bearing arrangement 201 Bearing housing 202 Bearing cover 203 Interior space 204 Bearing 205 Bearing element 206 Opening 207 Exterior 209 Hose 210 Chamber 211 Seamless connection 212 Shock Absorber 213 Entrance hole 214 Outlet hole 215 Distance between openings 216 Camera housing 217 Cushioning space 218 Cross-section of the inlet opening 219 Cross-section of the buffer space 220 First tube 221 Cross-section of the inner tube 222 Outlet hose 223 First end 224 Second end 225 Collection container 226 Opening 227 Vent 228 Thermal control module 229 Top 230 Bottom part 231 Bottom 232 Top 233 Sealing 300 Lubricant 301 Lubricant level 302 Lubricant flow direction Z Vertical direction

Claims

1. A bearing arrangement (200) for a wind turbine (100), comprising: - a bearing (204), - a bearing housing (201), wherein the bearing housing (201) contains an inner space (203) in which the bearing (204) is disposed, and wherein the bearing housing (201) comprises an opening (206) for draining lubricant (300) from the inner space (203), - a chamber (210), wherein the chamber (210) comprises a fluid connection (211) with the opening (206), wherein a damping space (217) is formed within the chamber (210) for regulating a flow of lubricant leaving the inner space (203), - a damper (212), wherein the damper (212) is disposed within the chamber (210), characterized in that the damper comprises at least one 1. Deflector, a plate with holes, a mesh, and a deflector plate. 2.Bearing arrangement according to claim 1, wherein the chamber (210) is arranged outside (207) of the bearing housing (201) and / or inside the bearing housing (201).

3. Bearing arrangement according to claim 1 or 2, wherein the chamber (210) comprises an inlet opening (213) and an outlet opening (214), wherein the inlet opening (213) is connectable to the opening (206).

4. Bearing arrangement according to claim 3, wherein a cross-section (218) of the inlet opening (213) of the chamber (210) is different from a cross-section (219) of the damping space (217). 5.Bearing arrangement according to claim 3 or 4, wherein the chamber (210) comprises a first tube (220) that can be connected to one of the inlet opening (213) and the outlet opening (214), such that the damping space (217) is in fluid communication with the other of the inlet opening (213) and the outlet opening (214), and wherein the first tube (220) comprises a cross-section (221) that is different from the cross-section (219) of the damping space (217).

6. Bearing arrangement according to any one of claims 1 to 5, comprising a hose (209), wherein the hose (209) can be fluidly connected between the chamber (210) and the opening (206). 7.A bearing arrangement according to any one of claims 1 to 6, comprising an outlet hose (222), wherein the outlet hose (222) is fluidly connected to the chamber (210) at a first end (223), and comprises a second end (224) for releasing the lubricant into a collection container (225).

8. A bearing arrangement according to any one of claims 1 to 7, wherein the opening (206) is in fluid communication with the chamber (210) through at least one opening (226) defined in the bearing housing (201).

9. A bearing arrangement according to any one of claims 1 to 8, wherein the chamber (210) comprises a vent (227).

10. A bearing arrangement according to any one of claims 1 to 9, comprising a thermal control module (228) for regulating the temperature of a chamber (210). 11.Bearing arrangement according to claim 1, wherein the damper (212) comprises a spring that is deflected towards the opening (206).

12. Bearing arrangement according to claim 1 or 11, wherein the damper (212) is movably arranged within the chamber (210) for adjusting the governor based on the position of the damper (212).

13. Bearing arrangement according to any one of claims 1 to 12, wherein a plurality of dampers (212) are arranged within the chamber (210), wherein the dampers are arranged in parallel, in series, and / or inclined with respect to each other.

14. Wind turbine, comprising: - a nacelle (106); - a bearing arrangement (200) according to any one of claims 1 to 13, which is arranged within the nacelle (106).

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