CN218151241U - Gear box and generator integrated structure for semi-direct-drive wind generating set - Google Patents
Gear box and generator integrated structure for semi-direct-drive wind generating set Download PDFInfo
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- CN218151241U CN218151241U CN202222095631.9U CN202222095631U CN218151241U CN 218151241 U CN218151241 U CN 218151241U CN 202222095631 U CN202222095631 U CN 202222095631U CN 218151241 U CN218151241 U CN 218151241U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a gear box and generator integrated configuration for half direct drive wind generating set, including gear box body and generator body, the rear end of the shell of gear box body is connected through the flange with the front end of the shell of generator body, the rear end output external fixation of gear box body is provided with the spline housing, the spline housing passes the rear end housing of gear box body and has the spline output shaft through internal spline connection, the spline output shaft is extended backward and is worn out the generator body to through the tight cover connection that expands with the high-speed shaft coupling of locating the generator body rear side, and the front end of this high-speed shaft coupling is connected through the flange with the rear end of the generator rotor of generator body, the generator rotor adopts solitary rotor bearing subassembly to support in the generator body. The utility model has the advantages of simple structure, convenient assembling, the problem of generator shaft current can effectively be solved simultaneously.
Description
Technical Field
The utility model belongs to the technical field of half direct-drive wind generating set's technique and specifically relates to indicate a gear box and generator integrated configuration for half direct-drive wind generating set.
Background
In the existing semi-direct-drive wind generating set, two single-row conical bearings are arranged back to back in a main shaft bearing manner, and wind wheel loads except torque are transmitted to a base through the main shaft. The half direct drive unit, namely a medium-speed transmission unit, generally adopts a design of integrating a medium-speed gear box and a generator into a whole. The gearbox and the generator are integrated in two ways, one way is that the generator shell is directly butted with the gearbox shell, and the generator rotor is directly hung on the output shaft of the gearbox, so that the structure is simple, the generator cannot be independently assembled, and the problem of shaft current of the generator is difficult to solve; the other type is that the generator shell is connected with the gear box shell through a transition section, a generator rotor is connected with an output shaft of the gear box through a flexible coupler, the whole axial length is long, the structure is complex and heavy, and the assembly is difficult.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a gear box and generator integrated configuration for half direct drive wind generating set, have simple structure, convenient assembling's advantage, can effectively solve the problem of generator shaft current simultaneously.
In order to achieve the above purpose, the utility model provides a technical scheme does: the utility model provides a gear box and generator integrated configuration for half direct drive wind generating set, includes gear box body and generator body, the rear end of the shell of gear box body is connected through the flange with the front end of the shell of generator body, and flange butt joint face adopts tang cooperation location in order to guarantee the coaxial precision of gear box and generator, the rear end output external fixation of gear box body is provided with the spline housing, the spline housing passes the rear end cap of gear box body and has the spline output shaft through internal spline connection, the spline output shaft extends backward and wears out the generator body to be connected through the tight cover that expands with the high-speed shaft coupling of locating the generator body rear side, and the front end of this high-speed shaft coupling is connected through the flange with the rear end of the generator rotor of generator body, and flange butt joint face adopts tang cooperation location, the generator rotor adopts solitary rotor bearing subassembly to support in the generator body.
Furthermore, an elastic element for compensating the alignment error between the spline output shaft and the generator rotor is arranged in the high-speed shaft coupler.
Furthermore, a hollow shaft used for arranging a pitch system cable in the gear box body is arranged at the center of the gear box body, the front end of the hollow shaft is supported at the front end of the gear box body, the rear end of the hollow shaft sequentially penetrates through the spline housing and the spline output shaft and is supported on a cross beam support through a bearing assembly, the cross beam support is fixed on a rear end cover of the generator body, an outer ring of the bearing assembly is connected with the cross beam support, the front end of an inner ring of the bearing assembly is connected with the hollow shaft, and the rear end of the bearing assembly is connected with a slip ring of the wind generating set.
Furthermore, a groove which is concave towards the front end of the generator body is formed in the rear end cover of the generator body, a high-speed shaft brake of the wind generating set is fixed in the groove of the rear end cover, a high-speed shaft brake disc matched with the high-speed shaft brake is arranged on the inner side of the high-speed shaft brake and located on the outer side of the high-speed shaft coupler, and the high-speed shaft brake disc and the high-speed shaft coupler are integrally installed together.
Further, a grounding carbon brush used for discharging the current of the generator shaft is installed between the high-speed shaft brake disc and the rear end cover of the generator body.
Furthermore, the generator body is provided with an independent lubricating system, an oil filling hole used for being connected with the lubricating system is formed in the shell of the generator body, a lubricating oil path leading to the oil filling position of the bearing end part of the rotor bearing assembly is connected to the oil filling hole, the rear end of the rotor bearing assembly is sealed in a labyrinth mode, the front end of the rotor bearing assembly, the rear end cover of the gear box body and the front end cover of the generator body form a sealed cavity, an oil return hole is formed in the bottom of the sealed cavity and located at the bottom of the shell of the generator body, an oil return box is arranged below the oil return hole, and lubricating oil is driven to circulate in the lubricating oil path and the oil return box in a forced mode through a lubricating pump of the lubricating system.
Furthermore, be equipped with the first seal assembly who is used for preventing the inside lubricating oil of gear box body from leaking between the rear end cover of gear box body and the spline housing, be equipped with the second seal assembly between spline output shaft and the rotor bearing subassembly, the rear end bottom processing of spline output shaft has the oil receiving groove, the oil receiving groove is connected with the oil return tank of generator body bottom through connecting line, and the oil that leaves in the clearance between the hollow shaft of gear box body and the spline output shaft leads back to the oil return tank through the oil receiving groove.
Further, an insulating coating for blocking a generator shaft current path is provided within a bearing housing of the rotor bearing assembly.
Furthermore, the gear box body and the generator body are respectively provided with an independent heat exchanger, the two heat exchangers are respectively connected with a water-cooling radiator, and the two water-cooling radiators are arranged on a main machine of the wind generating set.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
1. the utility model discloses a gear box passes through spline housing, spline output shaft and high-speed shaft coupling with the generator and is connected, spline connection convenient assembling to the centering deviation of elastic element's compensation spline output shaft and generator rotor in the accessible high-speed shaft coupling has avoided the location, guarantees the reliability.
2. The utility model discloses a spline output shaft passes the generator and is connected at the generator afterbody with the generator rotor, and high-speed shaft stopper and sliding ring are just conveniently arranged to easy to assemble.
3. The utility model discloses an outer lane of bearing assembly passes through the crossbeam support to be fixed with the rear end cap of generator, and the inner circle passes through the hollow shaft to be connected with the input shaft realization of gear box, does not have the relation of connection with the output shaft of gear box, avoids the vibration conduction of output shaft to influence the sliding ring operation for the sliding ring to and avoid arousing the jump problem of the self-contained encoder on the sliding ring.
4. Adopt the utility model discloses an integrated configuration of gear box and generator, generator rotor adopt solitary rotor bearing subassembly to support, but gear box and generator independent assembly and test through gear box and independent lubricating system of generator configuration and cooling system, are integrated the installation by the complete machine factory at last, divide the worker clear and definite, conveniently manage and control quality process separately.
5. The utility model discloses the accessible sets up insulating coating on rotor bearing assembly's bearing frame and solves generator shaft current problem to can avoid generator shaft current to conduct and cause the gear box to damage in the gear box as supplementary protection at generator rear end installation ground connection carbon brush.
Drawings
Fig. 1 is a front view of the integrated structure of the present invention.
Fig. 2 is a top view of the integrated structure of the present invention.
Fig. 3 is a side view of the integrated structure of the present invention.
Fig. 4 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 3.
Fig. 5 is a partially enlarged view of fig. 4.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, but the usage of the present invention is not limited thereto.
As shown in fig. 1 to 5, the gear box and generator integrated structure for a half-direct drive wind generating set according to this embodiment includes a gear box body 1 and a generator body 2, the gear box body 1 is mounted on a base of the wind generating set by an installation method with a torsion arm and an elastic support 11, a front end input flange 101 of the gear box body 1 is mounted in a centering manner with a main shaft of the wind generating set, a rear end of a housing 102 of the gear box body 1 is connected with a front end of a housing 201 of the generator body 2 through a flange, and a flange butt-joint surface is positioned by a spigot 1001 in a matching manner to ensure coaxial accuracy of the gear box and the generator, a spline housing 103 is fixedly disposed outside a rear end output end of the gear box body 1, the spline housing 103 passes through a rear end cover 105 of the gear box body 1 and is connected with a spline output shaft 104 through an internal spline, the spline output shaft 104 extends backward to penetrate out of the generator body 2 and is connected with a high-speed shaft coupler 3 disposed at a rear side of the generator body 2 through an expansion sleeve, and a front end of the high-speed shaft coupler 3 is connected with a rear end of a rotor 202 through a flange, and a spigot positioning manner, so that the rotor 202 and the generator body 202 is supported by the rotor bearing assembly 203 alone.
Preferably, the rotor bearing assembly 203 takes the form of a combination of ball and roller bearings.
Preferably, the high-speed shaft coupling 3 is provided with an elastic element (not shown) therein, so as to compensate for the alignment error between the spline output shaft 104 and the generator rotor 202.
Preferably, a hollow shaft 106 for arranging a pitch system cable in the gearbox body 1 is arranged at the center of the gearbox body 1, the front end of the hollow shaft 106 is supported at the front end of the gearbox body 1, the rear end of the hollow shaft 106 sequentially passes through the spline housing 103 and the spline output shaft 104 and is supported on a cross beam bracket 108 through a bearing assembly 107, the cross beam bracket 108 is fixed on a rear end cover 204 of the generator body 2, the outer ring of the bearing assembly is connected with the cross beam bracket 108, the front end of the inner ring of the bearing assembly is connected with the hollow shaft 106, and the rear end of the bearing assembly is connected with a slip ring 4 of the wind generating set, wherein the bearing assembly is preferably in a form of a dense-seal positioning assembly combination of a deep groove ball bearing.
Preferably, a groove recessed towards the front end is formed on the rear end cover 204 of the generator body 2, the high-speed shaft brake 5 of the wind generating set is fixed in the groove of the rear end cover 204, the high-speed shaft brake disc 6 matched with the high-speed shaft brake 5 is arranged on the inner side of the high-speed shaft brake 5 and is positioned on the outer side of the high-speed shaft coupler 3, and the high-speed shaft brake disc 6 and the high-speed shaft coupler 3 are integrally installed together.
The lubricating systems of the gear box and the generator can be designed integrally, and the gear box can be used for lubricating the generator by one path of lubricating oil. The lubrication systems of the gearbox and the generator may also be designed separately, i.e. be provided with separate lubrication systems, respectively. The specific structure of the lubricating system of the generator is as follows: an oil filling hole (not shown) for connecting a lubricating system is formed in a shell 202 of the generator, a lubricating oil path leading to an oil filling position of a bearing end of a rotor bearing assembly 203 is connected to the oil filling hole, a labyrinth seal is adopted at the rear end of the rotor bearing assembly 203, a sealed cavity is formed by the front end of the rotor bearing assembly, a rear end cover 105 of a gearbox body 1 and a front end cover 205 of a generator body 2, an oil return hole 206 is formed in the bottom of the sealed cavity and positioned at the bottom of a shell 201 of the generator body 2, an oil return box 207 is arranged below the oil return hole, and lubricating oil is driven to forcibly circulate in the lubricating oil path and the oil return box through a lubricating pump of the lubricating system.
Preferably, a first sealing assembly (not shown in the drawings) for preventing lubricating oil inside the gearbox body 1 from leaking is arranged between the rear end cover 105 of the gearbox body 1 and the spline housing 103, a second sealing assembly 701 is arranged between the spline output shaft 104 and the rotor bearing assembly 203, an oil receiving groove 1041 is processed at the bottom of the rear end of the spline output shaft 104, the oil receiving groove 1041 is connected with the oil return tank 207 through a connecting pipeline 1042, and oil left from a gap between the hollow shaft 106 of the gearbox body 1 and the spline output shaft 104 is led back to the oil return tank 207 through the oil receiving groove 1041, so that the lubricating oil is prevented from leaking into the engine room. When the first sealing assembly fails, lubricating oil enters the sealing cavity from between the rear end cover 105 of the gear box body 1 and the spline housing 103, the lubricating oil can flow into the oil return tank 207 from the sealing cavity, and the lubricating oil can be returned to the gear box by configuring an oil return pump according to actual requirements.
Preferably, the bearing housing of the rotor bearing assembly 203 is provided with an insulating coating to block the generator shaft current path.
Preferably, the grounding carbon brush 8 is installed between the high-speed shaft brake disc 6 and the rear end cover 204 of the generator body 2, so that the auxiliary discharge path of the generator shaft current can be used, and the reliability of the generator set is improved.
Preferably, the gearbox body 1 and the generator body 2 are respectively provided with an independent cooling system, and meanwhile, the gearbox body 1 and the generator body 2 are respectively provided with an independent heat exchanger 901 and an independent heat exchanger 902, the two heat exchangers are respectively connected with a water-cooling radiator, the two water-cooling radiators are arranged on a main machine of the wind generating set, and the cooling of the gearbox and the generator is realized through the two water-cooling radiators.
Preferably, the front end input flange 101 is connected with the input shaft of the gear box body through two circles of bolt holes on the inner side by arranging four circles of bolt holes outwards from the center, and is connected with the main shaft in a centering manner through two circles of bolt holes on the outer side, so that the gear box can be installed with the main shaft by bolts on the outer side during butt joint, the assembly is more convenient, the weight of the gear box and the generator is borne by the gear box, and the installation is simple and the reliability is high.
Adopt the utility model discloses a gear box and generator integrated configuration, generator rotor adopt solitary rotor bearing subassembly to support, can realize independent assembly and the test of gear box and generator, and generator housing and the direct butt joint of gear box shell, and the gear box passes through spline output shaft and high-speed shaft coupling to be connected with generator rotor for the generator assembly is simple relatively. Meanwhile, the problem of shaft current of the generator can be effectively solved by arranging the insulating coating in the bearing seat of the rotor bearing assembly.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a gear box and generator integrated configuration for half direct drive wind generating set, includes gear box body and generator body, its characterized in that: the rear end of the shell of the gear box body is connected with the front end of the shell of the generator body through a flange, the butt joint face of the flange is positioned by adopting spigot fit to ensure the coaxial precision of the gear box and the generator, a spline sleeve is fixedly arranged outside the rear end output end of the gear box body, the spline sleeve penetrates through a rear end cover of the gear box body and is connected with a spline output shaft through an internal spline, the spline output shaft extends backwards to penetrate out of the generator body and is connected with a high-speed shaft coupler arranged on the rear side of the generator body through an expansion sleeve, the front end of the high-speed shaft coupler is connected with the rear end of a generator rotor of the generator body through a flange, the butt joint face of the flange is positioned by adopting spigot fit, and the generator rotor is supported in the generator body by adopting an independent rotor bearing assembly.
2. The integrated gearbox and generator structure for the semi-direct drive wind generating set according to claim 1, wherein: and an elastic element for compensating the alignment error of the spline output shaft and the generator rotor is arranged in the high-speed shaft coupler.
3. The integrated gearbox and generator structure for the semi-direct drive wind generating set according to claim 1, wherein: the hollow shaft used for arranging the pitch system cable in the gear box body is arranged at the center of the gear box body, the front end of the hollow shaft is supported at the front end of the gear box body, the rear end of the hollow shaft sequentially penetrates through the spline sleeve and the spline output shaft and is supported on the cross beam support through the bearing assembly, the cross beam support is fixed on the rear end cover of the generator body, the outer ring of the bearing assembly is connected with the cross beam support, the front end of the inner ring of the bearing assembly is connected with the hollow shaft, and the rear end of the bearing assembly is connected with the slip ring of the wind generating set.
4. A gearbox and generator integrated structure for a semi-direct drive wind generating set according to claim 1, wherein: a groove which is inwards concave towards the front end of the generator body is formed in a rear end cover of the generator body, a high-speed shaft brake of the wind generating set is fixed in the groove of the rear end cover, a high-speed shaft brake disc matched with the high-speed shaft brake is arranged on the inner side of the high-speed shaft brake and located on the outer side of a high-speed shaft coupler, and the high-speed shaft brake disc and the high-speed shaft coupler are integrally installed together.
5. A gearbox and generator integrated structure for a semi-direct drive wind generating set according to claim 4, characterized in that: and a grounding carbon brush for discharging the shaft current of the generator is arranged between the high-speed shaft brake disc and the rear end cover of the generator body.
6. The integrated gearbox and generator structure for the semi-direct drive wind generating set according to claim 1, wherein: the generator body is provided with an independent lubricating system, an oil filling hole used for being connected with the lubricating system is formed in a shell of the generator body, a lubricating oil path leading to a bearing end oil filling position of a rotor bearing assembly is connected to the oil filling hole, the rear end of the rotor bearing assembly is sealed in a labyrinth mode, the front end of the rotor bearing assembly, a rear end cover of a gear box body and a front end cover of the generator body form a sealed cavity, oil return holes are formed in the bottom of the sealed cavity and the bottom of the shell of the generator body, an oil return box is arranged below the oil return holes, and lubricating oil is driven to circulate in the lubricating oil path and the oil return box in a forced mode through a lubricating pump of the lubricating system.
7. A gearbox and generator integrated structure for a semi-direct drive wind generating set according to claim 1, wherein: the gearbox is characterized in that a first sealing assembly used for preventing lubricating oil inside the gearbox body from leaking is arranged between the rear end cover of the gearbox body and the spline sleeve, a second sealing assembly is arranged between the spline output shaft and the rotor bearing assembly, an oil receiving groove is machined in the bottom of the rear end of the spline output shaft and is connected with an oil return tank at the bottom of the generator body through a connecting pipeline, and oil reserved in a gap between a hollow shaft of the gearbox body and the spline output shaft is guided back to the oil return tank through the oil receiving groove.
8. The integrated gearbox and generator structure for the semi-direct drive wind generating set according to claim 1, wherein: an insulating coating for blocking a generator shaft current path is provided within a bearing housing of the rotor bearing assembly.
9. The integrated gearbox and generator structure for the semi-direct drive wind generating set according to claim 1, wherein: the wind generating set is characterized in that independent heat exchangers are respectively installed on the gear box body and the generator body, the two heat exchangers are respectively connected with a water-cooling radiator, and the two water-cooling radiators are installed on a main machine of the wind generating set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222095631.9U CN218151241U (en) | 2022-08-10 | 2022-08-10 | Gear box and generator integrated structure for semi-direct-drive wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222095631.9U CN218151241U (en) | 2022-08-10 | 2022-08-10 | Gear box and generator integrated structure for semi-direct-drive wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218151241U true CN218151241U (en) | 2022-12-27 |
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ID=84600471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222095631.9U Active CN218151241U (en) | 2022-08-10 | 2022-08-10 | Gear box and generator integrated structure for semi-direct-drive wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218151241U (en) |
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2022
- 2022-08-10 CN CN202222095631.9U patent/CN218151241U/en active Active
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