Highly integrated semi-direct-driven wind driven generator test device and use method thereof

Abstract

The invention relates to a highly-integrated semi-direct-drive wind driven generator test device, and the device comprises a wind driven generator which comprises a housing, a generator stator which is disposed in the housing and is fixed to the housing, and a generator rotor which is rotatably disposed in the generator stator. The main body test end cover is fixedly connected with the generator shell; the transmission assembly is connected with the test end cover and the generator rotor and is used for transmitting the rotation of the generator rotor; and the supporting legs are arranged at the bottom of the wind driven generator main body, are fixed with the bottom position of the test end cover and are used for supporting the wind driven generator main body. The test device has the advantages that the structure of the test device is simplified, and the test of the highly-integrated semi-direct-driven wind driven generator is facilitated.

Description

Technical Field

[0001] This application relates to the field of wind turbines, and in particular to a highly integrated semi-direct drive wind turbine test apparatus and its method of use. Background Technology

[0002] As an important component in the field of wind turbines, the performance of semi-direct drive generators directly affects the stability and power generation efficiency of the power generation system.

[0003] Before a semi-direct drive generator leaves the factory, it needs to undergo comprehensive and rigorous testing to ensure that its performance indicators meet the usage requirements. However, existing factory testing methods for semi-direct drive generators have many problems.

[0004] On the one hand, due to the design of highly integrated semi-direct drive wind turbines without feet or bearings, the rotor cannot rotate without a gearbox. On the other hand, the gearbox has many components, which makes the assembly and disassembly process of a single motor test cumbersome and labor-intensive, making it difficult to meet the high-efficiency testing requirements of batch motors. On the other hand, due to the large length and weight of the gearbox itself, the vertical installation process between the highly integrated semi-direct drive wind turbine and the gearbox places stringent requirements on the workshop height, overhead crane load-bearing capacity, and special hoisting tools during the gearbox's turning and lifting operations.

[0005] Existing testing methods often involve complex equipment, high costs, and cumbersome testing procedures, which not only increase the production costs of enterprises but also prolong the production cycle of generators and reduce production efficiency. Summary of the Invention

[0006] To simplify the structure of the test apparatus, improve the testing efficiency of highly integrated semi-direct drive wind turbines, and reduce the testing cost of highly integrated semi-direct drive wind turbines, this application provides a test apparatus for highly integrated semi-direct drive wind turbines.

[0007] The following technical solution is adopted. The system includes: a wind turbine generator, the main body of which comprises a housing, a generator stator installed inside and fixed to the housing, and a generator rotor rotatably installed inside the generator stator; a main body test end cover, fixedly connected to the generator housing; a transmission assembly, connecting the test end cover and the generator rotor, for transmitting the rotation of the generator rotor; and support feet, located at the bottom of the main body of the wind turbine generator and fixed to the bottom of the test end cover, providing support for the main body of the wind turbine generator.

[0008] Optionally, the transmission assembly includes a test shaft system and a transition flange. One side of the transition flange is fixed to the test shaft system, and the other side is fixed to the generator rotor. The end of the test shaft system facing away from the transition flange is connected to the test end cover.

[0009] Optionally, the test shaft system includes a transmission ring and a support ring sleeved outside the transmission ring. The transmission ring is rotatably mounted inside the support ring. The transmission ring is fixedly connected to the transition flange, and the support ring is fixedly connected to the test end cover.

[0010] Optionally, the test shaft system further includes a bearing installed between the transmission ring and the support ring. The bearing is installed on both sides of the support ring, with the outer wall of the bearing fitting against the inner wall of the support ring and the inner wall fitting against the outer wall of the transmission ring.

[0011] Optionally, the transmission assembly further includes lubricating oil, which fills the space between the support ring and the transmission ring. The bottom of the support ring has an oil drain hole for draining oil, and the top of the support ring has an oil injection hole for injecting oil.

[0012] Optionally, a connecting part is fixedly installed on the side of the transition flange facing the generator rotor. The connecting part is provided with a plurality of positioning through holes evenly spaced around the circumference. A connecting flange is provided on the inner wall of the generator rotor. A fixing through hole corresponding to the positioning through hole is provided on the connecting flange. A positioning post is provided in the positioning through hole. The positioning post slides through the fixing through hole.

[0013] Optionally, the outer wall of the connecting part is provided with a plurality of positioning protrusions evenly spaced around its circumference, the side wall of the connecting flange is provided with a snap-fit ​​groove for the connecting part to be snapped into, and the inner wall of the snap-fit ​​groove is provided with a positioning groove corresponding to the positioning protrusion.

[0014] Optionally, the sidewalls of the support legs are provided with connecting portions at intervals along their height direction, and a connecting plate connecting the two connecting portions is provided between the two support legs.

[0015] This application also discloses a method for using a highly integrated semi-direct drive wind turbine test device, characterized by comprising: Preparation: Hoist the support legs to both sides of the ground according to the overall length of the wind turbine after the test device is installed. Install lifting rings on the main body of the wind turbine and place the test device flat on the ground. S1. Use cranes or other hoisting tools to lift the wind turbine horizontally and align the connecting flange on the wind turbine with the transition flange on the test shaft system. S2, After aligning the connecting flange with the transition flange, use bolts to lock the connecting flange and the transition flange together; S3, Use cranes or other hoisting devices to lift the locked test device and wind turbine as a whole; S4. Place the hoisted test device and the main body of the wind turbine on the support feet, and use bolts to fix the support feet on both sides to the main body of the wind turbine and the test end cover respectively. S5 energizes the wind turbine, causing it to rotate, which in turn drives the test shaft system on the test device to rotate, thus enabling the detection of various parameters of the wind turbine.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up test end caps, transmission components and support feet, the highly integrated semi-direct drive wind turbine can be supported by the support feet and output power through the transmission components to realize the test of the highly integrated semi-direct drive wind turbine. The structure is simple, the installation is convenient, and the test efficiency of the highly integrated semi-direct drive wind turbine is improved. 2. By setting a transition flange, the applicability of the test device is improved, enabling the test device to be adapted to different models of highly integrated semi-direct drive wind turbines; 3. By setting positioning protrusions and snap-fit ​​grooves, the accuracy of positioning of the transition flange and the connecting flange is improved, the installation efficiency is increased, and the transmission precision is higher, thereby improving the test accuracy to a certain extent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0018] Figure 2 This is a cross-sectional structural diagram of Example 1.

[0019] Figure 3 This is a schematic diagram of the structure of the test end cap in Example 1.

[0020] Figure 4 This is a schematic diagram of the structure of the test end cap in another direction in Example 1.

[0021] Figure 5 This is an exploded structural diagram of the test shaft system and test end cap in Example 1.

[0022] Figure 6 It is a cross-sectional structural diagram of the test shaft system, transition flange, and connecting flange.

[0023] Figure 7 yes Figure 2 Enlarged view of section A.

[0024] Figure 8 This is a partial structural schematic diagram of Example 1.

[0025] Figure 9 This is a schematic diagram of the exploded structure of Example 2.

[0026] Figure 10 This is an exploded structural diagram of the transition flange and the connecting flange.

[0027] Figure 11 This is a schematic diagram of the exploded structure of the transition flange and the connecting flange in the other direction.

[0028] Explanation of reference numerals in the attached drawings: 1. Wind turbine main body; 11. Housing; 12. Generator stator; 13. Generator rotor; 14. Connecting flange; 141. Fixing through hole; 142. Snap-fit ​​groove; 143. Positioning groove; 2. Test end cover; 21. Housing fixing flange; 22. Housing fixing ring; 23. First structural reinforcing rib; 24. Shaft connecting flange; 25. Connecting cylinder; 26. Second structural reinforcing rib; 3. Transmission assembly; 31. Test shaft system; 32. Support ring; 321. First sealing countersunk hole; 322. Second sealing countersunk hole; 323. Third sealing countersunk hole; 324. 325. Rolling ring groove; 3251. Bearing; 3252. Bearing retaining ring; 326. Oil injection hole; 327. Oil drain hole; 33. Sealing retaining ring; 34. Sealing retaining ring; 341. Sealing extension; 35. Sealing ring; 351. Positioning part; 352. Labyrinth part; 36. Sealing gasket; 361. Fixing part; 362. Sealing part; 37. Transmission ring; 38. Transition flange; 381. Connecting part; 382. Positioning through hole; 383. Positioning protrusion; 384. Positioning post; 4. Support foot; 41. Mounting block; 42. Third structural reinforcing rib; 43. Connecting plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail. Example 1

[0030] See attached document Figure 1 and attached Figure 2 This application discloses a highly integrated semi-direct drive wind turbine test device, including a wind turbine body 1, a test end cover 2, a transmission component 3, and a support foot 4.

[0031] The wind turbine main body 1 includes a housing 11, a generator stator 12, and a generator rotor 13. The generator stator 12 is fixed to the inner wall of the housing 11, and the generator rotor 13 is rotatably mounted inside the generator stator.

[0032] See attached document Figure 2 and attached Figure 3The test end cap 2 has a housing fixing flange 21 fixedly connected to the housing 11, a housing fixing ring 22 snapped into the housing 11, a shaft connecting flange 24 connected to the transmission assembly 3, a connecting cylinder 25 connecting the shaft connecting flange 24 and the housing fixing flange 21, a first structural reinforcing rib 23 disposed between the housing fixing flange 21 and the connecting cylinder 25, and a second structural reinforcing rib 26 disposed on the outer wall of the shaft connecting flange 24.

[0033] At least eight first structural reinforcing ribs 23 are evenly spaced along the circumferential edge of the fixing flange 21 of the housing 11. In this embodiment, there are 16 first structural reinforcing ribs 23, which are welded and fixed between the fixing flange 21 of the housing 11 and the fixing ring 22 of the housing.

[0034] At least eight second structural reinforcing ribs 26 are evenly spaced along the circumferential edge of the shaft connection flange 24. In this embodiment, there are 16 second structural reinforcing ribs 26, which are welded and fixed to the side wall of the shaft connection flange 24. The positions of the second structural reinforcing ribs 26 correspond one-to-one with the positions of the first structural reinforcing ribs 23.

[0035] See attached document Figure 4 and attached Figure 5 The test end cover 2 has a transmission through hole 27 at its center for mounting the transmission assembly 3. The transmission assembly 3 connects the test end cover 2 to the generator rotor 13 and transmits the torque generated when the generator rotor 13 rotates. The transmission assembly 3 includes a test shaft system 31 and a transition flange 38.

[0036] See attached document Figure 5 and attached Figure 6 The transition flange 38 is provided corresponding to the connecting flange 14. The inner side of the transition flange 38 is provided with threaded holes. At least 10 threaded holes are evenly spaced along the circumference of the edge of the transition flange 38. The connecting flange 14 is provided with smooth holes corresponding to the threaded holes. The connecting flange 14 and the transition flange 38 are fixedly connected by bolts. The structure is simple, easy to install, and has sufficient shear resistance to realize the transmission of the wind turbine rotor 13.

[0037] See attached document Figure 5 and attached Figure 6 The test shaft system 31 includes a support ring 32, a transmission ring 37, and lubricating oil filled between the support ring 32 and the transmission ring 37.

[0038] See attached document Figure 6 and attached Figure 7One side of the support ring 32 is fixedly connected to the test end cover 2. In this embodiment, a flange connection is used. The support ring 32 has a stepped countersunk hole on the side facing the wind turbine body 1. From the end near the wind turbine body 1 to the end facing the test end cover 2, there are a first sealing countersunk hole 321, a second sealing countersunk hole 322, and a third sealing countersunk hole 323, respectively. The end of the support ring 32 facing the test end cover 2 has a rolling ring groove 324.

[0039] A bearing 325 is provided between the support ring 32 and the transmission ring 37. In this embodiment, the bearing 325 is a tapered roller bearing, and there are two bearings 325, which are respectively installed in the rolling ring groove 324 and the third sealing countersunk hole 323. A bearing retainer ring 3251 is provided on the side of the third sealing countersunk hole 323 away from the bearing 325, and the bearing retainer ring 3251 is thermally interference-fitted to the outside of the transmission ring 37. A bearing retainer ring 3252 is provided on the side of the transmission ring 37 away from the wind turbine generator body 1, and the bearing retainer ring 3252 is connected to the transmission ring 37 by a flange.

[0040] A lubrication cavity is formed between the support ring 32 and the transmission ring 37, and lubricating oil is filled in the lubrication cavity. The top of the support ring 32 is provided with an oil injection hole 326 for oil injection, and the bottom of the support ring 32 is provided with an inclined oil discharge part that protrudes outward. An inclined oil discharge hole 327 is provided inside the oil discharge part, and the oil discharge hole 327 is connected to the third sealing countersunk hole 323.

[0041] A sealing ring 34 is installed inside the third sealing countersunk hole 323. A sealing extension 341 extending towards the test end cap 2 is provided on one side of the inner wall of the sealing ring 34. A gap of 0.6mm-1.5mm exists between the sealing extension 341 and the sealing ring 33 to achieve a seal between them. The sealing extension 341 is fixedly connected to the support ring 32 using bolts.

[0042] Both the second sealing countersunk hole 322 and the first sealing countersunk hole 321 are provided with a sealing ring 35 and a sealing gasket 36. The sealing gasket 36 includes a fixing part 361 bolted to the support ring 32 and a sealing part 362 facing the transmission ring 37. The sealing part 362 is perpendicular to the fixing part 361 and is L-shaped.

[0043] The sealing ring 35 includes a positioning portion 351 that fits against the drive ring 37 and a labyrinth portion 352 extending toward the sealing gasket 36. The labyrinth portion 352 is also L-shaped, and a sealing ring 35 groove corresponding to the sealing gasket 36 is formed on the side of the labyrinth portion 352 facing the sealing gasket 36. The sealing portion 362 is inserted into the labyrinth portion 352, and a gap of 0.6mm-1.5mm is left between the sealing portion 362 and the labyrinth portion 352 to further seal the gap of lubricating oil leaking from the sealing extension 341 and the sealing retainer ring 33. The above-mentioned labyrinth sealing structure can prevent lubricating oil leakage during the rotation of the drive ring 37.

[0044] See attached document Figure 8 At least two support legs 4 are spaced apart along the width of the wind turbine body 1. One support leg 4 is bolted to the test end cover 2, and the other support leg 4 is bolted to the side of the housing 11 opposite to the test end cover 2. Multiple third structural reinforcing ribs 42 are spaced apart along the length of the support leg 4. At least two mounting blocks 41 are spaced apart along the height of each side wall of the support leg 4, and a connecting plate 43 connects the two mounting blocks 41. This improves the support strength of the support leg 4 and reduces the probability of deformation of the support leg 4 under the pressure of the wind turbine body 1 and the test device.

[0045] The usage method of this embodiment is as follows: Preparation: Based on the overall length of the wind turbine after the test device is installed, hoist the support legs 4 to both sides of the ground, install lifting rings on the main body 1 of the wind turbine, and place the test device flat on the ground. S1, Use cranes or other hoisting tools to lift the wind turbine horizontally and align the connecting flange on the wind turbine with the transition flange on the test shaft system 31; S2, After aligning the connecting flange 14 with the transition flange 38, use bolts to lock the connecting flange 14 and the transition flange 38. S3, Use cranes or other hoisting devices to lift the locked test device and wind turbine as a whole; S4, place the hoisted test device and the wind turbine main body 1 on the support legs 4, and use bolts to fix the support legs 4 on both sides to the wind turbine main body 1 and the test end cover 2 respectively. S5 energizes the wind turbine, causing it to rotate, which in turn drives the test shaft system 31 on the test device to rotate, thereby enabling the detection of various parameters of the wind turbine. Example 2

[0046] See attached document Figure 9 and attached Figure 10The difference between this embodiment and Embodiment 1 is that the transition flange 38 is flange-connected to the support ring 32, and a connecting part 381 is fixedly installed on the side of the transition flange 38 away from the test end cover 2. The connecting part 381 and the transition flange 38 are fixedly connected by welding. When the model of the wind turbine body 1 changes, the transition flange 38 can be replaced, and different transition flanges are used for the end cover to achieve the fixed installation of the test end cover 2 and the wind turbine body 1, so that the test device can be adapted to the test of different models of highly integrated semi-direct drive wind turbines.

[0047] See attached document Figure 10 and attached Figure 11 The connecting part 381 has a plurality of positioning through holes 382 evenly spaced around its circumference, and the outer wall of the connecting part 381 has a plurality of positioning protrusions 383 evenly spaced around its circumference. The connecting flange 14 has a fixing through hole 141 corresponding to the positioning through hole 382, ​​and a positioning pin 384 is provided in the positioning through hole 382, ​​which slides through the fixing through hole 141.

[0048] The side wall of the connecting flange 14 is provided with a snap-fit ​​groove 142 for the connecting part 381 to engage. The inner wall of the snap-fit ​​groove 142 is provided with a positioning groove 143 corresponding to the positioning protrusion 383. The positioning protrusion 383 fits into the positioning groove 143, so that the connection flange 14 and the transition flange 38 are tightly fitted. Compared with the direct bolt connection, this reduces the slight deformation of the bolts during transmission, improves the transmission accuracy, and thus improves the accuracy of the test to a certain extent.

[0049] When installing the wind turbine body 1 and the test device, when the wind turbine body 1 is hoisted above the test device, it can be pre-positioned by the positioning column 384 so that the fixing through hole 141 corresponds to the positioning through hole 382, ​​so that the positioning protrusion 383 can be inserted into the locking groove 142. This avoids the need for personnel to make fine adjustments to the hoisting position during the hoisting and descent process, reduces the swaying of the wind turbine body 1 during the descent process, improves the safety of the hoisting process, and facilitates the connection between the wind turbine body 1 and the test device.

[0050] The usage method of this embodiment is as follows: Preparation: Install lifting rings on the main body 1 of the wind turbine generator and place the test device flat on the ground; S1, Use cranes or other hoisting tools to lift the wind turbine horizontally and align the connecting flange 14 on the wind turbine with the transition flange 38 on the test shaft system 31; S2, slowly lower the wind turbine so that the positioning pin 384 on the connecting flange 14 corresponds to the positioning through hole 382 on the transition flange 38, and during the descent, the positioning pin 384 is inserted into the positioning through hole 382. S3, after the wind turbine is completely lowered, the positioning teeth are engaged in the positioning groove, the positioning pin 384 is removed, and the connecting flange 14 and the transition flange 38 are tightened with bolts. S4. Use cranes or other hoisting devices to lift the locked test device and wind turbine as a whole. S5, place the hoisted test device and the wind turbine main body 1 on the support feet, and fix the support feet to the wind turbine main body 1 and the test device; S6 energizes the wind turbine, causing it to rotate, which in turn drives the test shaft system 31 on the test device to rotate, thereby enabling the detection of various parameters of the wind turbine.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A highly integrated semi-direct drive wind turbine generator test device, comprising a wind turbine generator body (1), wherein the wind turbine generator body (1) includes a housing (11), a generator stator (12) installed inside and fixed to the housing (11), and a generator rotor (13) rotatably installed inside the generator stator (12), characterized in that, Also includes: The test end cap (2) is fixedly connected to the generator housing (11); The transmission assembly (3) connects the test end cover (2) and the generator rotor (13) to transmit the rotation of the generator rotor (13); Support feet (4) are located at the bottom of the wind turbine body (1) and fixed to the bottom of the test end cover (2) to provide support for the wind turbine body (1).

2. The highly integrated semi-direct drive wind turbine test device according to claim 1, characterized in that: The transmission assembly (3) includes a test shaft system (31) and a transition flange (38). One side of the transition flange (38) is fixed to the test shaft system (31), and the other side is fixed to the generator rotor (13). The end of the test shaft system (31) away from the transition flange (38) is connected to the test end cover (2).

3. The highly integrated semi-direct drive wind turbine test device according to claim 2, characterized in that: The test shaft system (31) includes a transmission ring (37) and a support ring (32) sleeved outside the transmission ring (37). The transmission ring (37) is rotatably installed inside the support ring (32). The transmission ring (37) is fixedly connected to the transition flange, and the support ring (32) is fixedly connected to the test end cover (2).

4. The highly integrated semi-direct drive wind turbine test device according to claim 2, characterized in that: The test shaft system (31) also includes a bearing (325) installed between the transmission ring (37) and the support ring (32). The bearing (325) is installed on both sides of the support ring (32). The outer wall of the bearing (325) is in contact with the inner wall of the support ring (32), and the inner wall is in contact with the outer wall of the transmission ring (37).

5. The highly integrated semi-direct drive wind turbine test device according to claim 2, characterized in that: The transmission assembly (3) also includes lubricating oil, which fills the space between the support ring (32) and the transmission ring (37). The bottom of the support ring (32) is provided with an oil drain hole (327) for draining oil, and the top of the support ring (32) is provided with an oil injection hole (326) for injecting oil.

6. The highly integrated semi-direct drive wind turbine test device according to claim 2, characterized in that: The transition flange (38) is directly fixedly connected to the connecting flange (14).

7. The highly integrated semi-direct drive wind turbine test device according to claim 2, characterized in that: A connecting part (381) is fixedly installed on the side of the transition flange (38) facing the generator rotor (13). The connecting part (381) is provided with a plurality of positioning through holes (382) evenly spaced around the circumference. A connecting flange (14) is provided on the inner wall of the generator rotor (13). A fixing through hole (141) corresponding to the positioning through hole (382) is provided on the connecting flange (14). A positioning pin (384) is provided in the positioning through hole (382). The positioning pin (384) slides through the fixing through hole (141).

8. The highly integrated semi-direct drive wind turbine test device according to claim 2, characterized in that: The outer wall of the connecting part (381) is provided with a plurality of positioning protrusions (383) evenly spaced around the periphery. The side wall of the connecting flange (14) is provided with a snap-fit ​​groove (142) for the connecting part (381) to be snapped into. The inner wall of the snap-fit ​​groove (142) is provided with a positioning groove corresponding to the positioning protrusions (383).

9. The highly integrated semi-direct drive wind turbine test device according to claim 1, characterized in that: The sidewall of the support leg (4) is provided with connecting parts (381) at intervals along its height direction, and a connecting plate (43) connecting the two connecting parts (381) is provided between the two support legs (4).

10. A method for using a highly integrated semi-direct drive wind turbine generator test device, characterized in that: Preparation: The support feet (4) are hoisted and placed on both sides of the ground according to the overall length of the wind turbine after the test device is installed. The lifting rings are installed on the main body (1) of the wind turbine and the test device is placed flat on the ground. S1, use cranes or other hoisting tools to lift the wind turbine horizontally and align the connecting flange on the wind turbine with the transition flange on the test shaft system (31); S2, after aligning the connecting flange (14) with the transition flange (38), use bolts to lock the connecting flange (14) and the transition flange (38); S3, Use cranes or other hoisting devices to lift the locked test device and wind turbine as a whole; S4, place the hoisted test device and the wind turbine main body (1) on the support feet (4), and use bolts to fix the support feet (4) on both sides to the wind turbine main body (1) and the test end cover (2) respectively; S5, power on the wind turbine generator to make it rotate, thereby driving the test shaft system (31) on the test device to rotate, so as to realize the detection of various parameters of the wind turbine generator.

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