Integrated wind generating set

Abstract

The invention discloses an integrated wind generating set. Comprising a tower drum, a cabin cover arranged at the top of the tower drum, a first rack arranged in the cabin cover, a second rack connected to the first rack, a main transmission system arranged above the first rack, a damping device arranged on one side of the main transmission system and a cooling device arranged at one end of the second rack, a sliding ring is arranged at one end of the threading pipe, the damping device is connected to the sliding ring, a first oil collecting tray and a second oil collecting tray which are communicated with the integrated oil station are arranged below the main transmission system, an annular oil collecting groove is formed in the inner side of the tower barrel, and the integrated oil station is communicated with the annular oil collecting groove through an oil way. By arranging the cooling device, the damping device and the annular oil collecting groove, vibration of the slip ring is reduced through the buffering effect of a spring and damping, the service life of the slip ring is prolonged, the effect of centralized lubricating and cooling of a main transmission system is achieved, and the problem of environmental pollution caused by oil leakage is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine generator sets, and in particular relates to an integrated wind turbine generator set. Background Art

[0002] A wind turbine is an electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine is generally composed of components such as a wind rotor, a yaw system, a tower, a main transmission system, and a speed limit safety mechanism. The working principle of a wind turbine is that the wind rotor rotates under the action of wind force, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity driven by the wind rotor shaft.

[0003] The integrated main transmission system has a compact structure, light weight and high efficiency. It is the main development direction of large-power wind turbines, especially offshore wind turbines. The main shaft assembly, speed-increasing gearbox and generator of this type of wind turbine are highly integrated, and higher requirements are placed on the load-sharing performance of the speed-increasing gearbox and the lubrication and cooling performance of the main transmission system. The threading tube in the main transmission system runs through the gearbox and the generator. Due to its long length and poor rigidity, the slip ring installed at the end vibrates greatly, which greatly affects the service life of the slip ring. In addition, the main transmission system requires a large amount of lubricating oil, which needs to be stored reliably to avoid leakage outside the cabin in extreme cases, causing marine pollution. In summary, a reliable and environmentally friendly integrated wind turbine is urgently needed. Summary of the invention

[0004] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the present invention provides an integrated wind turbine generator set.

[0005] The present invention provides an integrated wind turbine generator set, the wind turbine generator set comprising a tower, a nacelle cover arranged on the top of the tower, a first frame arranged in the nacelle cover, a second frame connected to the first frame, a main transmission system arranged above the first frame, a vibration reduction device arranged on one side of the main transmission system, and a cooling device arranged at one end of the second frame, wherein:

[0006] A threading tube is provided in the main transmission system, a slip ring is provided at one end of the threading tube, the vibration reduction device is connected to the slip ring, the vibration reduction device comprises an L-shaped connecting plate connected to one end of the slip ring, a guide seat fixed to the bottom of the L-shaped connecting plate, and a spring seat sleeved on the outer periphery of the guide seat, a spring is provided between the guide seat and the spring seat, a base is connected to the bottom of the spring seat through a damper, and the base is provided on the top of the second frame;

[0007] The cabin cooling device comprises an air inlet opened at the bottom of the cabin cover, an air outlet opened at the top of the cabin cover, an air inlet pipe connected to the air inlet, an air outlet pipe connected to the air inlet pipe, and an exhaust fan arranged between the air inlet pipe and the air outlet pipe, wherein a filter assembly is arranged in the air inlet pipe;

[0008] A first oil collecting pan and a second oil collecting pan are arranged below the main transmission system. The first oil collecting pan and the second oil collecting pan are connected to an integrated oil station through oil circuits respectively. The integrated oil station is arranged at the connection between the nacelle cover and the tower. An annular oil collecting tank is arranged on the inner side of the tower. The integrated oil station is connected to the annular oil collecting tank through the oil circuit.

[0009] As a specific implementation, in the above-mentioned integrated wind turbine generator set, an oil collecting tank is provided at the bottom of the tower, and the annular oil collecting tank is connected to the oil collecting tank through the oil path.

[0010] Furthermore, in the above-mentioned integrated wind turbine generator set, the main transmission system includes a gear box and a generator arranged at one end of the gear box, and the threading tube passes through the inside of the gear box and the generator.

[0011] As a specific implementation, in the above-mentioned integrated wind turbine generator set, the filter assembly includes a first particle filter plate, a second particle filter plate arranged above the first particle filter plate, and a water vapor filter plate arranged below the first particle filter plate.

[0012] As a specific implementation, in the above-mentioned integrated wind turbine generator set, the first particle filter plate, the second particle filter plate, and the water vapor filter plate are all arranged in the air inlet pipe in a drawer-type manner.

[0013] As a specific implementation, in the above-mentioned integrated wind turbine generator set, an inspection hole is opened on one side of the nacelle cover corresponding to the axis of the threading pipe.

[0014] As a specific implementation, in the above-mentioned integrated wind turbine generator set, the damper is connected to the top of the base through a pre-tightening component.

[0015] Furthermore, in the above-mentioned integrated wind turbine generator set, a yaw system is provided between the first frame and the tower.

[0016] Furthermore, in the above-mentioned integrated wind turbine generator set, a heat exchanger is arranged on the top of the nacelle cover.

[0017] As a specific implementation, in the above-mentioned integrated wind turbine generator set, the exhaust pipe is an L-shaped pipe body, the air outlet of which is directly opposite to the main transmission system, and the exhaust port is arranged above the main transmission system.

[0018] The integrated wind turbine generator set of the present invention has the following advantages and positive effects:

[0019] (1) The present invention is provided with a vibration reduction device. During the operation of the main transmission system, when the slip ring installed at the end vibrates greatly due to the long length and poor rigidity of the threading tube, the L-shaped connecting plate in the vibration reduction device will apply force downward during the vibration of the slip ring. At this time, part of the force is applied to the spring and buffered by the spring, and another part of the force is buffered by the damping. The buffering effect of the spring and the damping can reduce the vibration of the slip ring and increase the service life of the slip ring. The pre-tightening component can effectively adjust the vibration reduction effect of the spring and the damping, and the present invention has good practicality and adaptability.

[0020] (2) The present invention is provided with an annular oil collecting groove. When oil leakage occurs in the main transmission system, the leaked oil flows to the integrated oil station through the oil path, then flows from the integrated oil station to the annular oil collecting groove through the oil path, and finally the oil in the annular oil collecting groove flows to the oil collecting tank through the oil path, thereby preventing the problem of environmental pollution caused by oil leakage, and having good environmental protection performance;

[0021] (3) The present invention is provided with a cooling device, so that the outside air is sucked into the air inlet duct through the air inlet under the action of the exhaust fan, filtered by the filter assembly, and then discharged from the exhaust duct. At this time, the purified air with a lower temperature fills the engine nacelle, which is beneficial to the heat dissipation of the main transmission system. The higher temperature air in the engine nacelle is easy to be discharged from the exhaust port because of its lower density, thereby achieving the effect of centralized lubrication and cooling of the main transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of the integrated wind turbine generator set of the present invention;

[0024] Figure 2 is a cross-sectional schematic diagram of an integrated wind turbine generator set of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the vibration reduction device in the integrated wind turbine generator set of the present invention.

[0026] Description of reference numerals:

[0027] 1-tower, 2-cabin cover, 21-air inlet, 22-exhaust outlet, 23-manhole, 24-heat exchanger, 3-first frame, 4-second frame, 5-main transmission system, 51-threading tube, 52-slip ring, 6-vibration reduction device, 61-L-type connecting plate, 62-guide seat, 63-spring seat, 64-spring, 65-damping, 66-base, 67-preload assembly, 7-cooling device, 71-air inlet pipe, 72-exhaust pipe, 73-exhaust fan, 74-first particle filter plate, 75-second particle filter plate, 76-water vapor filter plate, 8-annular oil collecting trough, 81-first oil collecting tray, 82-second oil collecting tray, 83-oil circuit, 84-integrated oil station, 9-yaw device. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 3As shown, the present invention provides an integrated wind turbine generator set, which includes a tower 1, a nacelle 2 arranged on the top of the tower 1, a first frame 3 arranged in the nacelle 2, a second frame 4 connected to the first frame 3, a main transmission system 5 arranged above the first frame 3, a vibration reduction device 6 arranged on one side of the main transmission system 5, and a cooling device 7 arranged at one end of the second frame 4, wherein a threading tube 51 is arranged in the main transmission system 5, and the threading tube 51 is used to transmit power and signals and convey lubricating oil to the primary planetary gear system in the main transmission system 5, and a slip ring 52 is arranged at one end of the threading tube 51. The vibration reduction device 6 is connected to the slip ring 52. One end of the slip ring 52 is fixedly connected to the threading tube 51 through a flange, and the other end is connected to the generator or gear box body in the main transmission system 5 through the slip ring 52 stop bracket. The vibration reduction device 6 includes an L-shaped connecting plate 61 connected to one end of the slip ring 52, a guide seat 62 fixed to the bottom of the L-shaped connecting plate 61, and a spring seat 63 sleeved on the outer periphery of the guide seat 62. The radial position of the slip ring 52 can be effectively limited by the cooperation between the guide seat 62 and the spring seat 63. The guide seat 62 slides vertically in the spring seat 63, and a spring 64 is arranged between the guide seat 62 and the spring seat 63. , a base 66 is connected to the lower part of the spring seat 63 through a damper 65. When the L-shaped connecting plate 61 applies force downward, part of the force is applied to the spring 64, which is buffered by the spring 64, and another part of the force is buffered by the damper 65. The base 66 is arranged on the top of the second frame 4. When the main transmission system 5 is running, the slip ring 52 installed at the end vibrates greatly due to the large length and poor rigidity of the threading tube 51. The buffering effect of the spring 64 and the damper 65 in the vibration reduction device 6 can reduce the vibration of the slip ring 52 and improve the service life of the slip ring 52. The cabin cooling device 7 includes an air inlet opened at the bottom of the cabin cover 2. The air inlet 21, the exhaust port 22 opened on the top of the engine nacelle 2, the air inlet duct 71 connected to the air inlet 21, the exhaust duct 72 connected to the air inlet duct 71, and the exhaust fan 73 arranged between the air inlet duct 71 and the exhaust duct 72. The air inlet duct 71 is provided with a filter assembly. Under the action of the exhaust fan 73, the outside air is sucked into the air inlet duct 71 through the air inlet 21 and filtered by the filter assembly, and then discharged from the exhaust duct 72. At this time, the purified air with a lower temperature fills the engine nacelle 2, which is beneficial to the heat dissipation of the main transmission system 5. The air with a higher temperature in the engine nacelle 2 is easy to be discharged from the exhaust port 22 because of its lower density.A first oil collecting pan 81 and a second oil collecting pan 82 are provided below the main transmission system 5. The first oil collecting pan 81 and the second oil collecting pan 82 are connected to an integrated oil station 84 through an oil path 83, respectively. The integrated oil station 84 is provided at the connection between the nacelle 2 and the tower 1. An annular oil collecting tank 8 is provided inside the tower 1. The integrated oil station 84 is connected to the annular oil collecting tank 8 through the oil path 83. When oil leakage occurs in the main transmission system 5, the leaked oil flows to the integrated oil station 84 through the oil path 83, and then flows from the integrated oil station 84 through the oil path 83 to the annular oil collecting tank 8, thereby preventing the problem of environmental pollution caused by oil leakage, and having good environmental protection. ;

[0030] As a specific embodiment, in the integrated wind turbine generator set of the present invention, an oil collecting tank (not shown in the figure) is arranged at the bottom of the tower 1, and the annular oil collecting tank 8 is connected to the oil collecting tank through the oil path 83. More specifically, the oil collecting tank is arranged inside the tower 1, and the oil in the annular oil collecting tank 8 can flow into the oil collecting tank through the oil path 83, thereby preventing the problem of environmental pollution caused by oil leakage, and having good environmental protection performance.

[0031] Furthermore, in the integrated wind turbine generator set of the present invention, the main transmission system 5 includes a gear box and a generator arranged at one end of the gear box, and the threading tube 51 passes through the inside of the gear box and the generator.

[0032] As a specific embodiment, in the integrated wind turbine generator set of the present invention, the filtering component includes a first particle filter plate 74, a second particle filter plate 75 arranged above the first particle filter plate 74, and a water vapor filter plate 76 arranged below the first particle filter plate 74, wherein the first particle filter plate 74 is a coarse particle filter plate that can filter out larger dust and salt spray particles, the second particle filter plate 75 is a fine particle filter plate that can filter out smaller dust and salt spray particles, and the water vapor filter plate 76 can filter out water vapor and liquid water, so as to adapt to the working conditions of some offshore wind power generation.

[0033] As a specific embodiment, in the integrated wind turbine generator set of the present invention, the first particle filter plate 74, the second particle filter plate 75, and the water vapor filter plate 76 are all arranged in the air inlet pipe 71 in a drawer-type design. A plurality of slots are opened in the wall of the air inlet pipe 71, and then the filter plates matching each slot are inserted into the slot. When the filter plate needs to be replaced or repaired, it is only necessary to pull the filter plate to be disassembled out of the slot for replacement or repair.

[0034] As a specific embodiment, in the integrated wind turbine generator set of the present invention, an inspection hole 23 is opened on one side of the nacelle cover 2 corresponding to the axis of the threading tube 51. This arrangement makes it easy to pull out the threading tube 51 as a whole through the inspection hole 23 for repair and maintenance without increasing the length of the nacelle cover 2.

[0035] As a specific implementation, in the integrated wind turbine generator set of the present invention, the damper 65 is connected to the top of the base 66 through the pre-tightening component 67. The pre-tightening component 67 can effectively regulate the vibration reduction effect of the spring 64 and the damper 65, so that the vibration reduction device 6 has good adaptability.

[0036] Furthermore, in the integrated wind turbine generator set of the present invention, a yaw system 9 is provided between the first frame 3 and the tower 1, through which the cabin can be yawed and rotated relative to the tower 1 at irregular intervals. Such a configuration facilitates the collection of oil by the annular oil collecting trough 8.

[0037] Furthermore, in the integrated wind turbine generator set of the present invention, a heat exchanger 24 is disposed on the top of the nacelle cover 2 .

[0038] As a specific implementation, in the integrated wind turbine generator set of the present invention, the exhaust pipe 72 is an L-shaped pipe body, and its air outlet 22 is directly opposite to the main transmission system 5, and the exhaust port 22 is arranged above the main transmission system 5.

[0039] In summary, compared with the prior art, the integrated wind turbine generator set of the present invention has the following advantages and positive effects:

[0040] (1) The present invention is provided with a vibration reduction device 6. During the operation of the main transmission system 5, when the slip ring 52 installed at the end vibrates greatly due to the large length and poor rigidity of the threading tube 51, the L-shaped connecting plate 61 in the vibration reduction device 6 will apply force downward during the vibration of the slip ring 52. At this time, part of the force is applied to the spring 64, which is buffered by the spring 64, and another part of the force is buffered by the damping 65. The buffering effect of the spring 64 and the damping 65 can reduce the vibration of the slip ring 52 and increase the service life of the slip ring 52. The pre-tightening component 67 can effectively adjust the vibration reduction effect of the spring 64 and the damping 65, and the present invention has good practicality and adaptability.

[0041] (2) The present invention is provided with an annular oil collecting groove 8. When oil leakage occurs in the main transmission system 5, the leaked oil flows to the integrated oil station 84 through the oil path 83, then flows from the integrated oil station 84 to the annular oil collecting groove 8 through the oil path 83, and finally the oil in the annular oil collecting groove 8 flows to the oil collecting tank through the oil path 83, thereby preventing the problem of environmental pollution caused by oil leakage, and having good environmental protection.

[0042] (3) The present invention is provided with a cooling device 7, so that the outside air is sucked into the air inlet pipe 71 through the air inlet 21 under the action of the exhaust fan 73, and is filtered by the filter component, and then discharged from the exhaust pipe 72. At this time, the purified air with a lower temperature fills the engine cover 2, which is beneficial to the heat dissipation of the main transmission system 5. The higher temperature air in the engine cover 2 is easy to be discharged from the exhaust port 22 due to its lower density, thereby achieving the effect of centralized lubrication and cooling of the main transmission system 5.

[0043] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated wind turbine generator set, comprising a tower, a nacelle cover arranged on the top of the tower, a first frame arranged in the nacelle cover, a second frame connected to the first frame, a main transmission system arranged above the first frame, a vibration reduction device arranged on one side of the main transmission system, and a cooling device arranged at one end of the second frame, wherein: A threading tube is provided in the main transmission system, a slip ring is provided at one end of the threading tube, the vibration reduction device is connected to the slip ring, the vibration reduction device comprises an L-shaped connecting plate connected to one end of the slip ring, a guide seat fixed to the bottom of the L-shaped connecting plate, and a spring seat sleeved on the outer periphery of the guide seat, a spring is provided between the guide seat and the spring seat, a base is connected to the bottom of the spring seat through a damper, and the base is provided on the top of the second frame; The cabin cooling device comprises an air inlet opened at the bottom of the cabin cover, an air outlet opened at the top of the cabin cover, an air inlet pipe connected to the air inlet, an air outlet pipe connected to the air inlet pipe, and an exhaust fan arranged between the air inlet pipe and the air outlet pipe, wherein a filter assembly is arranged in the air inlet pipe; A first oil collecting pan and a second oil collecting pan are arranged below the main transmission system. The first oil collecting pan and the second oil collecting pan are connected to an integrated oil station through oil circuits respectively. The integrated oil station is arranged at the connection between the nacelle cover and the tower. An annular oil collecting tank is arranged on the inner side of the tower. The integrated oil station is connected to the annular oil collecting tank through the oil circuit.

2. The integrated wind turbine generator set according to claim 1, characterized in that: An oil collecting tank is arranged at the bottom of the tower, and the annular oil collecting groove is connected to the oil collecting tank through the oil passage.

3. The integrated wind turbine generator set according to claim 1, characterized in that: The main transmission system comprises a gear box and a generator arranged at one end of the gear box, and the threading tube passes through the inside of the gear box and the generator.

4. The integrated wind turbine generator set according to claim 1, characterized in that: The filter assembly includes a first particle filter plate, a second particle filter plate arranged above the first particle filter plate, and a water vapor filter plate arranged below the first particle filter plate.

5. The integrated wind turbine generator set according to claim 4, characterized in that: The first particle filter plate, the second particle filter plate, and the water vapor filter plate are all arranged in the air inlet pipe in a drawer-like manner.

6. The integrated wind turbine generator set according to claim 1, characterized in that: An inspection hole is provided on one side of the nacelle cover corresponding to the axis of the threading pipe.

7. The integrated wind turbine generator set according to claim 1, characterized in that: The damper is connected to the top of the base through a pre-tightening assembly.

8. The integrated wind turbine generator set according to claim 1, characterized in that: A yaw system is arranged between the first frame and the tower.

9. The integrated wind turbine generator set according to claim 1, characterized in that: A heat exchanger is arranged on the top of the nacelle cover.

10. The integrated wind turbine generator set according to claim 1, characterized in that: The exhaust pipe is an L-shaped pipe body, the air outlet of which is directly opposite to the main transmission system, and the exhaust port is arranged above the main transmission system.

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