Split type wind generating set and transportation method thereof

Abstract

The invention discloses a split type wind generating set and a transportation method thereof.The split type wind generating set comprises a rack, a frame, a cabin cover, a main transmission system, a yaw system, a side cabin and an electric power system, the cabin cover is connected with the rack and the frame, the main transmission system is arranged on the rack, the yaw system is arranged at the bottom of the rack, and the side cabin is connected with the electric power system; the side cabins are detachably arranged on the two sides of the cabin cover, and the power systems are installed in the side cabins. The wind turbine generator system is compact in structure and convenient to assemble, the distance between a power system and a main transmission system is effectively shortened, current and system losses are effectively reduced, meanwhile, the overall size of the wind turbine generator system is effectively reduced, and the side cabin and the cabin main body structure can be independently transported during transportation; and the problem that the whole wind turbine generator is too large and cannot be transported during transportation is effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine generator sets, and in particular relates to a split wind turbine generator set and a transportation method thereof. Background Art

[0002] A wind turbine is a system that converts the kinetic energy of wind into electrical energy. To ensure a more economical and efficient wind turbine, the capacity of a single wind turbine needs to be increased.

[0003] In the prior art, in order to ensure economic efficiency, electrical equipment is installed in the nacelle. The electrical equipment in the nacelle boosts the lower voltage (690 / 1140 / 1380V) output by the generator to a voltage (usually not less than 35kV), thereby reducing current and system losses. However, due to the large size of the electrical equipment, it will not only cause the wind turbine to be large-scale, but also easily cause the nacelle to have a large downward deformation, thereby making it difficult to transport the wind turbine on land and high maintenance and transportation costs. Summary of the invention

[0004] In order to at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a split-type wind turbine generator set and a transportation method thereof.

[0005] The split-type wind turbine generator set of the present invention comprises a frame, a framework, a nacelle cover, a main transmission system, a yaw system, a side cabin and a power system, wherein the nacelle cover is connected to the frame and the framework respectively, the main transmission system is arranged on the frame, the yaw system is arranged at the bottom of the frame, the side cabins are detachably arranged on both sides of the nacelle cover, and the power system is installed in the side cabins, wherein:

[0006] The nacelle cover comprises a nacelle outer cover, a nacelle top cover, a rigid connector and an elastic connector, wherein the nacelle top cover is detachably arranged on the top of the nacelle outer cover, the lower part of the nacelle outer cover is arranged on the frame through the rigid connector, and the upper part of the nacelle outer cover is arranged on the frame through the elastic connector;

[0007] The main transmission system includes a main shaft assembly, a gearbox, a gearbox cooling device, a generator and a generator cooling device. The gearbox is connected to the main shaft assembly by bolts, the output end of the gearbox is connected to the generator, the gearbox cooling device is arranged on the top of the gearbox for air cooling the gearbox, and the generator cooling device is arranged on the top of the generator for air cooling the generator;

[0008] The power system comprises a converter, a transformer and a cable assembly, and the generator and the converter, and the converter and the transformer are both connected via the cable assembly.

[0009] Furthermore, in the above-mentioned split wind turbine generator set, the frame includes a front frame and a rear frame, the front frame is fixedly connected to the rear frame by bolts, the generator is fixedly connected to the rear frame by bolts, and an opening is provided in the middle of the front frame.

[0010] Furthermore, in the above-mentioned split-type wind turbine generator set, a mounting flange is provided at the top of the main shaft assembly, and a mounting hole is provided around the mounting flange for connecting to the hub. Three lug flanges are evenly provided around the circumference of the mounting flange, and pin holes are symmetrically provided on the lug flange for locking the wind wheel.

[0011] Furthermore, in the above-mentioned split-type wind turbine generator set, a gearbox heat exhaust channel is arranged on the top of the gearbox cooling device, a generator cooling channel is arranged on one side of the generator cooling device, and a generator heat exhaust channel is arranged on the other side of the generator cooling device.

[0012] Furthermore, in the above-mentioned split-type wind turbine generator set, the nacelle top cover is provided with a gearbox air outlet corresponding to the gearbox heat exhaust channel, the gearbox heat exhaust channel is communicated with the gearbox air outlet, the nacelle outer cover is provided with a nacelle air inlet at the bottom, the nacelle outer cover is provided with a generator air outlet corresponding to the generator heat exhaust channel, and the generator heat exhaust channel is communicated with the generator air outlet.

[0013] Furthermore, in the above-mentioned split-type wind turbine generator set, the side cabin includes a steel frame and a side cabin cover, the upper part of the steel frame is fixedly connected to the frame, the lower part of the steel frame is fixedly connected to the frame, and the side cabin cover is fixedly connected to the steel frame.

[0014] Furthermore, in the above-mentioned split-type wind turbine generator set, the converter is fixed to the steel frame on one side by bolts, and the transformer is fixed to the steel frame on the other side by bolts. The side cabin cover installed on one side of the converter is provided with a converter exhaust port, the side cabin cover installed on one side of the transformer is provided with a transformer exhaust port, and the bottom of the side cabin cover installed on one side of the transformer is provided with a transformer air inlet.

[0015] Furthermore, in the above-mentioned split-type wind turbine generator set, a stator wire outlet and a rotor wire outlet are provided on the side of the generator close to the converter, and the stator wire outlet and the rotor wire outlet are connected to the converter through the cable assembly.

[0016] The split-type wind turbine generator set transportation method of the present invention comprises:

[0017] The split wind turbine generator set includes two transportations, including:

[0018] For the first transportation, the main structure of the nacelle of the split wind turbine generator set is transported after the side cabin is removed. The transport vehicle body is designed to have a sinking structure. The frame is fixed on the transport vehicle body through the shipping bracket on the transport vehicle. The yaw system and its corresponding shipping bracket are placed in the sinking position to minimize the distance between the bottom of the nacelle cover and the transport vehicle body, ensure that the top of the nacelle cover is in a horizontal state with the transport vehicle, and rotate the top height of the front end of the main shaft assembly to the lowest height position for transportation;

[0019] The second transportation is to transport the side cabin, install the power system in the side cabin and fix it on the transport vehicle body for transportation.

[0020] Furthermore, in the above-mentioned split-type wind turbine transport method, when using the shipping bracket on the transport vehicle to fix the frame on the transport vehicle body, the main shipping bracket is fixed to the yaw system in turn, the auxiliary shipping bracket is fixed to the frame, and then the main shipping bracket is inserted into the sink and fixed in turn, and the auxiliary shipping bracket is fixed to the vehicle body.

[0021] The split-type wind turbine generator set and the transportation method thereof of the present invention have the following advantages and beneficial effects:

[0022] The present invention has a compact structure and is easy to assemble. By installing the power system in the side cabin, the distance between the power system and the main transmission system is shortened, effectively reducing current and system losses, and effectively reducing the volume of the wind turbine during transportation. During transportation, the side cabin and the main transmission system can be transported independently, effectively avoiding the problem of the wind turbine being too large to be transported during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a schematic diagram of the structure of the split-type wind turbine generator set of the present invention after the frame is removed;

[0025] Figure 2 It is a top view of the split-type wind turbine generator set of the present invention after removing the nacelle top cover;

[0026] Figure 3 It is a top view of the split-type wind turbine generator set of the present invention after removing the nacelle top cover, gear box and generator;

[0027] Figure 4 for Figure 1Sectional view of AA in the middle;

[0028] Figure 5 for Figure 1 Cross-sectional view of the middle BB;

[0029] Figure 6 It is a schematic diagram of the connection structure between the nacelle cover and the frame of the split-type wind turbine generator set of the present invention;

[0030] Figure 7 It is a top cross-sectional view of the main shaft assembly of the split-type wind turbine generator set of the present invention;

[0031] Figure 8 It is a front view of the top of the main shaft assembly of the split-type wind turbine generator set of the present invention;

[0032] Fig. 9 It is a schematic diagram of the front frame structure of the split-type wind turbine generator set of the present invention;

[0033] Fig.10 It is a schematic diagram of a first transportation scheme of the split-type wind turbine generator set transportation method of the present invention.

[0034] Description of reference numerals:

[0035] 100: transport vehicle; 200: shipping support; 300: sink;

[0036] 1: rack, 11: front rack, 111: opening, 12: rear rack;

[0037] 2: Framework;

[0038] 3: Nacelle cover, 31: Nacelle outer cover, 311: Generator air outlet, 32: Nacelle top cover, 321: Gearbox air outlet, 322: Nacelle air inlet, 33: Rigid connector, 34: Elastic connector;

[0039] 4: main transmission system, 41: main shaft assembly, 411: mounting flange, 412: mounting hole, 413: lug flange, 414: pin hole, 42: gearbox, 43: gearbox cooling device, 431: gearbox heat exhaust channel, 44: generator, 441: stator outlet, 442: rotor outlet, 45: generator cooling device, 451: generator cooling channel, 452: generator heat exhaust channel;

[0040] 5: Yaw system;

[0041] 6: side cabin, 61: steel frame, 62: side cabin cover, 621: converter exhaust vent, 622: transformer exhaust vent, 623: transformer air inlet;

[0042] 7: Power system, 71: Converter, 72: Transformer, 73: Cable assembly. DETAILED DESCRIPTION

[0043] 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.

[0044] like Figures 1 to 9 As shown, the split wind turbine generator set of the present invention comprises a frame 1, a frame 2, a nacelle cover 3, a main transmission system 4, a yaw system 5, a side cabin 6 and a power system 7. The nacelle cover 3 is connected to the frame 1 and the frame 2 respectively, the main transmission system 4 is arranged on the frame 1, the yaw system 5 is arranged at the bottom of the frame 1, the side cabins 6 are detachably arranged on both sides of the nacelle cover 3, and the power system 7 is installed in the side cabins 6, wherein:

[0045] The cabin cover 3 includes a cabin outer cover 31, a cabin top cover 32, a rigid connector 33 and an elastic connector 34. The cabin top cover 32 is detachably arranged on the top of the cabin outer cover. The lower part of the cabin outer cover 31 is arranged on the frame 1 through the rigid connector 33, and the upper part of the cabin outer cover 31 is arranged on the frame 2 through the elastic connector 34.

[0046] The main transmission system 4 includes a main shaft assembly 41, a gear box 42, a gear box cooling device 43, a generator 44 and a generator cooling device 45. The gear box 42 is connected to the main shaft assembly 41 by bolts, and the output end of the gear box 42 is connected to the generator 44. The gear box cooling device 43 is arranged on the top of the gear box 42 for air cooling the gear box 42. The generator cooling device 45 is arranged on the top of the generator 44 for air cooling the generator 44.

[0047] The power system 7 includes a converter 71 , a transformer 72 and a cable assembly 73 . The generator 44 and the converter 71 , and the converter 71 and the transformer 72 are connected via the cable assembly 73 .

[0048] Furthermore, in the above-mentioned split wind turbine generator set, the frame 1 includes a front frame 11 and a rear frame 12, the front frame 11 and the rear frame 12 are fixedly connected by bolts, the generator 44 is fixedly connected to the rear frame 12 by bolts, and an opening 111 is provided in the middle of the front frame 11. The setting of the opening 111 effectively reduces the overall weight of the front frame 11 and facilitates the passage of the cable assembly 73.

[0049] Furthermore, in the above-mentioned split wind turbine generator set, a mounting flange 411 is provided at the top of the main shaft assembly 41, and a mounting hole 412 is provided around the mounting flange 411 for connecting with the hub. Three lug flanges 413 are evenly arranged around the mounting flange 411 in the circumferential direction, and pin holes 414 are symmetrically provided on the lug flanges 413 for locking the wind wheel. Therefore, the mounting flange 411 can not only be connected with the hub, but also can be used for locking the wind wheel, thereby effectively shortening the overall length of the main shaft assembly 41.

[0050] Furthermore, in the above-mentioned split wind turbine generator set, a gear box heat exhaust channel 431 is arranged on the top of the gear box cooling device 43, a generator cooling channel 451 is arranged on one side of the generator cooling device 45, and a generator heat exhaust channel 452 is arranged on the other side of the generator cooling device 45, wherein an angle cutting process is performed on the upwind side of the generator cooling device 45, thereby effectively reducing the height of the generator 44 after the generator cooling device 45 is installed.

[0051] Furthermore, in the above-mentioned split-type wind turbine generator set, a gearbox air outlet 321 is provided on the nacelle top cover 32 corresponding to the gearbox heat exhaust channel 431, and the gearbox heat exhaust channel 431 is communicated with the gearbox air outlet 321. A nacelle air inlet 322 is provided at the bottom of the nacelle outer cover 31, and a generator air outlet 311 is provided on the nacelle outer cover 31 corresponding to the generator heat exhaust channel 452, and the generator heat exhaust channel 452 is communicated with the generator air outlet 311, so that the gearbox cooling device 43 inhales relatively low-temperature air in the nacelle to cool the gearbox 42, and then discharges the high-temperature air from the nacelle cover 3 through the gearbox heat exhaust channel 431 and the gearbox air outlet 321. At the same time, the generator cooling device 45 inhales relatively low-temperature air through the generator cooling channel 451 to cool the generator 44, and then discharges the high-temperature air from the nacelle cover 3 through the generator heat exhaust channel 452 and the generator air outlet 311. By adopting air cooling to cool the gearbox 42 and the generator 44, the manufacturing cost is effectively reduced, and maintenance is facilitated.

[0052] Furthermore, in the above-mentioned split wind turbine generator set, the side cabin 6 includes a steel frame 61 and a side cabin cover 62. The upper part of the steel frame 61 is fixedly connected to the frame 2, the lower part of the steel frame 61 is fixedly connected to the frame 1, and the side cabin cover 62 is fixedly connected to the steel frame 61, so that the side cabin 6 is easy to disassemble. The steel frame 61 is designed as a triangular structure, which effectively shortens the installation length of the steel frame 61 and improves the supporting strength.

[0053] Furthermore, in the above-mentioned split-type wind turbine generator set, the converter 71 is fixed to one side of the steel frame 61 by bolts, and the transformer 72 is fixed to the other side of the steel frame 61 by bolts. A converter exhaust port 621 is provided on the side cabin cover 62 installed on one side of the converter 71, a transformer exhaust port 622 is provided on the side cabin cover 62 installed on one side of the transformer 72, and a transformer air inlet 623 is provided at the bottom of the side cabin cover 62 installed on one side of the transformer 72, so that the converter 71 and the transformer 72 can be disassembled and assembled separately, and at the same time, the converter exhaust port 621 and the transformer exhaust port 622 effectively reduce the heat during use and improve the service life.

[0054] Furthermore, in the above-mentioned split-type wind turbine generator set, a stator outlet 441 and a rotor outlet 442 are provided on the side of the generator 44 close to the converter 71, and the stator outlet 441 and the rotor outlet 442 are connected to the converter 71 through a cable assembly 73, thereby effectively reducing the length of the cable assembly 73.

[0055] The split-type wind turbine generator set transportation method of the present invention comprises:

[0056] The split wind turbine generator set includes two transportations, including:

[0057] First transport, such as Fig.10 As shown, the main structure of the nacelle of the split-type wind turbine generator set after the side cabin 6 is removed is transported (i.e., the main structure of the nacelle after the frame 1, frame 2, nacelle cover 3, main transmission system 4 and yaw system 5 are assembled), the body of the transport vehicle 100 is designed to have a sink 300, the frame 1 is fixed on the body of the transport vehicle 100 by the shipping bracket 200 on the transport vehicle 100, the yaw system 5 and its corresponding shipping bracket 200 are placed in the sink 300, so that the distance between the bottom of the nacelle cover 3 and the body of the transport vehicle 100 is minimized, ensuring that the top of the nacelle cover 3 and the transport vehicle 100 are in a horizontal state, and the main shaft assembly 41 is rotated so that the front top height is at the lowest height position for transportation, such as when the outer circumference of the lug flange 413 is at the center line, it is the highest point position, and when the main shaft assembly 41 is rotated, the lug flange 413 is placed so that the circumference of the circumference of the flange is at the center line, so that the overall placement height of the main transmission system 4 is at the lowest state;

[0058] In the second transportation, the side compartment 6 is transported, and the power system 7 is installed in the side compartment 6 and fixed to the body of the transport vehicle 100 for transportation.

[0059] Furthermore, in the above-mentioned split-type wind turbine transport method, when using the shipping bracket 200 on the transport vehicle 100 to fix the frame 1 on the body of the transport vehicle 100, the main shipping bracket is fixed to the yaw system 5 in turn, and the auxiliary shipping bracket is fixed to the frame 1, and then the main shipping bracket is inserted into the sink 300 in turn for fixation, and the auxiliary shipping bracket is fixed to the body.

[0060] In summary, compared with the prior art, the split-type wind turbine generator set and the transportation method thereof of the present invention have the following advantages and beneficial effects: the present invention has a compact structure and is easy to assemble. By installing the power system in the side cabin, the distance between the power system and the main transmission system is shortened, effectively reducing the current and system losses, and at the same time effectively reducing the volume of the wind turbine generator set during transportation. The side cabin and the main transmission system can be transported independently during transportation, effectively avoiding the problem of the wind turbine generator set being too large to be transported during transportation.

[0061] 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.

[0062] 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. A split-type wind turbine generator set, characterized in that: The split-type wind turbine generator set comprises a frame, a framework, a nacelle cover, a main transmission system, a yaw system, a side cabin and a power system, wherein the nacelle cover is connected to the frame and the frame respectively, the main transmission system is arranged on the frame, the yaw system is arranged at the bottom of the frame, the side cabins are detachably arranged on both sides of the nacelle cover, and the power system is installed in the side cabins, wherein: The nacelle cover comprises a nacelle outer cover, a nacelle top cover, a rigid connector and an elastic connector, wherein the nacelle top cover is detachably arranged on the top of the nacelle outer cover, the lower part of the nacelle outer cover is arranged on the frame through the rigid connector, and the upper part of the nacelle outer cover is arranged on the frame through the elastic connector; The main transmission system includes a main shaft assembly, a gearbox, a gearbox cooling device, a generator and a generator cooling device. The gearbox is connected to the main shaft assembly by bolts, the output end of the gearbox is connected to the generator, the gearbox cooling device is arranged on the top of the gearbox for air cooling the gearbox, and the generator cooling device is arranged on the top of the generator for air cooling the generator; The power system comprises a converter, a transformer and a cable assembly, and the generator and the converter, and the converter and the transformer are both connected via the cable assembly.

2. The split-type wind turbine generator set according to claim 1, characterized in that: The frame comprises a front frame and a rear frame, the front frame is fixedly connected to the rear frame by bolts, the generator is fixedly connected to the rear frame by bolts, and an opening is arranged in the middle of the front frame.

3. The split-type wind turbine generator set according to claim 1, characterized in that: A mounting flange is arranged at the top of the main shaft assembly, and a mounting hole is arranged around the mounting flange for connecting with the hub. Three lug flanges are evenly arranged around the circumference of the mounting flange, and pin holes are symmetrically arranged on the lug flange for locking the wind wheel.

4. The split-type wind turbine generator set according to claim 1, characterized in that: A gearbox heat exhaust channel is arranged on the top of the gearbox cooling device, a generator cooling channel is arranged on one side of the generator cooling device, and a generator heat exhaust channel is arranged on the other side of the generator cooling device.

5. The split-type wind turbine generator set according to claim 4, characterized in that: The cabin top cover is provided with a gearbox air outlet corresponding to the gearbox heat exhaust channel, and the gearbox heat exhaust channel is communicated with the gearbox air outlet; the cabin outer cover is provided with a cabin air inlet at the bottom, and the cabin outer cover is provided with a generator air outlet corresponding to the generator heat exhaust channel, and the generator heat exhaust channel is communicated with the generator air outlet.

6. The split-type wind turbine generator set according to claim 1, characterized in that: The side cabin comprises a steel frame and a side cabin cover, the upper part of the steel frame is fixedly connected to the frame, the lower part of the steel frame is fixedly connected to the frame, and the side cabin cover is fixedly connected to the steel frame.

7. The split-type wind turbine generator set according to claim 6, characterized in that: The converter is fixed to the steel frame on one side by bolts, and the transformer is fixed to the steel frame on the other side by bolts. The side cabin cover installed on one side of the converter is provided with a converter exhaust port, the side cabin cover installed on one side of the transformer is provided with a transformer exhaust port, and the bottom of the side cabin cover installed on one side of the transformer is provided with a transformer air inlet.

8. The split-type wind turbine generator set according to claim 7, characterized in that: A stator wire outlet and a rotor wire outlet are arranged on one side of the generator close to the converter, and the stator wire outlet and the rotor wire outlet are connected to the converter through the cable assembly.

9. A method for transporting a split-type wind turbine generator set comprises: The split wind turbine generator set includes two transportations, including: For the first transportation, the main structure of the nacelle of the split wind turbine generator set is transported after the side cabin is removed. The transport vehicle body is designed to have a sinking structure. The frame is fixed on the transport vehicle body through the shipping bracket on the transport vehicle. The yaw system and its corresponding shipping bracket are placed in the sinking position to minimize the distance between the bottom of the nacelle cover and the transport vehicle body, ensure that the top of the nacelle cover is in a horizontal state with the transport vehicle, and rotate the top height of the front end of the main shaft assembly to the lowest height position for transportation; The second transportation is to transport the side cabin, install the power system in the side cabin and fix it on the transport vehicle body for transportation.

10. The method for transporting a split-type wind turbine generator set according to claim 9, characterized in that: When using the shipping bracket on the transport vehicle to fix the frame on the transport vehicle body, the main shipping bracket is fixed to the yaw system in turn, the auxiliary shipping bracket is fixed to the frame, and then the main shipping bracket is inserted into the sink for fixation in turn, and the auxiliary shipping bracket is fixed to the vehicle body.

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