CN210622979U - Generating set driftage system - Google Patents
Generating set driftage system Download PDFInfo
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- CN210622979U CN210622979U CN201921263405.9U CN201921263405U CN210622979U CN 210622979 U CN210622979 U CN 210622979U CN 201921263405 U CN201921263405 U CN 201921263405U CN 210622979 U CN210622979 U CN 210622979U
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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 generating set driftage system, including slewing bearing fixed part and slewing bearing rotary part. The system also comprises a magnetoelectric yaw driving system which comprises a stator and a rotor which are respectively and oppositely arranged on the slewing bearing fixing part and the slewing bearing rotating part, and a servo driving mechanism which provides exciting current for the rotor, wherein the rotor rotates relative to the stator under the action of the servo driving mechanism, and then the slewing bearing rotating part is driven to realize yaw relative to the slewing bearing fixing part. The stator and the rotor are arranged in an axial arrangement mode. The utility model discloses utilize magnetoelectric induction principle, realize non-contact driftage action, replace current contact gear engagement driftage drive action, greatly improved the life of driftage system. Still through the axial arrangement mode, make this driftage system structure more firm, non-deformable, not fragile and maintain convenient, change portably.
Description
Technical Field
The utility model relates to a generating set's driftage technical field especially relates to a generating set driftage system.
Background
At present, a generator set yawing system adopts a mechanical structure, namely, a driving motor and a reduction gear box are used as power sources, and a gear at the front end of the reduction gear box is meshed with a corresponding gear ring on a set fixing part, so that the power source drives the generator set cabin to integrally yaw.
However, the current tidal current energy and wind generating set yaw system has the following problems: (1) because the operation environment is severe, the unit is subjected to the comprehensive action of various uncertain factors and environmental conditions in the operation process, and the mechanical structure is difficult to realize full sealing, so that the problems of corrosion, accelerated wear and the like of parts are easy to occur. (2) Because of the adoption of a gear meshing mode, contact friction exists between all teeth, abrasion and structural damage easily occur in long-term use, and the gear meshing contact part also fails due to factors such as the processing precision and the process of tooth shapes. In addition, for the unit of different models, there is the difference to yaw speed and drive torque requirement, needs to design the reduction gear box of various velocity ratios according to different models, and the driving motor also needs redesign according to required moment of torsion and rotational speed, and work load is big, and the design cycle is long. (3) The gear meshing mode needs to be periodically added with lubricating grease and is provided with an automatic lubricating system. Because the whole body cannot be sealed, the lubricating grease can be influenced by the environment, and is easily distributed unevenly and fails on the tooth surface, so that the gear ring is damaged due to insufficient lubrication. The lubricating pump is also required to be provided with a power supply and the running state is monitored, so that the complexity of the system is further increased. (4) At present, a mechanical yawing system and a unit are integrally assembled, once a yawing gear ring and teeth are deformed and broken, the whole cabin needs to be separated from an operation environment for partial disassembly to complete replacement, the operation difficulty is high, the process is complex, the time consumption is long, the replacement cost is high, the unit is stopped for a long time, and the generated energy is greatly influenced.
Therefore, it is obvious that the above-mentioned conventional yawing system for generator sets still has inconveniences and disadvantages in structure, method and use, and further improvement is needed. How to create a new generator set yawing system, so that the traditional mechanical gear meshing yawing mode is thoroughly changed, and a non-contact yawing driving mode is adopted, so that the generator set yawing system is simple in structure and easy to replace, and becomes an extremely improved target in the current industry.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a generating set driftage system makes it thoroughly change traditional mechanical type gear engagement driftage mode, adopts non-contact driftage drive mode, simple structure, easy change to overcome current generating set driftage system not enough.
In order to solve the technical problem, the utility model provides a generating set driftage system, including slewing bearing fixed part and slewing bearing rotary part, but through bearing swing joint between slewing bearing fixed part and the slewing bearing rotary part still include magnetoelectric driftage actuating system, magnetoelectric driftage actuating system is including setting up relatively respectively stator and rotor on slewing bearing fixed part and the slewing bearing rotary part, and do the rotor provides exciting current's servo drive mechanism, the rotor is in servo drive mechanism's effect down for the stator takes place to rotate, and then drives the slewing bearing rotary part for slewing bearing fixed part realizes driftage.
In a further improvement, the stator and the rotor are arranged between the rotary support fixing component and the rotary support rotating component in an axial arrangement mode.
In a further improvement, the stator is arranged along the upper surface of the rotary support fixing component, a convex edge extending outwards is arranged at the top end of the rotary support rotating component, the rotor is arranged along the lower surface of the convex edge, and a cable through hole is formed in the convex edge.
The improved structure is characterized in that the stator is formed by laminating silicon steel sheets, a plurality of uniformly distributed through holes are formed in the side face, close to the rotor, of the stator, and magnetic steel is fixedly embedded in the through holes.
The improved structure is characterized in that the rotor is formed by laminating silicon steel sheets, a plurality of uniformly distributed groove bodies are formed in the side face, close to the stator, of the rotor, excitation windings are embedded in the groove bodies, and the excitation windings are electrically connected with the servo driving mechanism.
The rotor is further improved by adopting a whole piece of magnetic conductivity metal as an iron core, an excitation winding is wound outside the iron core, and the excitation winding is electrically connected with the servo driving mechanism.
The improved structure of the rotor comprises a stator, a rotor and a sealing plate, wherein the stator is arranged on the outer side surface of the rotor, the sealing plate is arranged on the outer side surface of the rotor in the radial direction, the sealing plate is of a cylindrical structure, the bottom edge of the cylindrical structure is fixedly connected with a rotary support fixing part, and the top edge of the cylindrical structure is in sealing contact with the outer side wall of the convex edge.
The sealing plate is further improved, and is made of rubber oil seal materials.
The servo driving mechanism comprises a driving motor and a frequency converter connected with the driving motor, and the frequency converter is connected with a generator set main control system.
The rotary support is characterized in that the rotary support fixing component and the rotary support rotating component are movably connected through a bearing, and the bearing is a ball bearing or a column bearing.
After adopting such design, the utility model discloses following advantage has at least:
1. the utility model discloses a relative axial setting takes magnetoelectric stator and rotor between generating set slewing bearing fixed part and slewing bearing rotary part respectively to exert exciting current to the excitation winding of rotor according to generating set driftage instruction, utilize magnetoelectric induction principle, realize non-contact driftage action, replace current contact gear engagement driftage drive action, avoided meshing part to cause the damage because of inevitable wearing and tearing in long-term work, greatly improved driftage actuating system's life-span.
2. The utility model discloses a structure to current slewing bearing rotary part improves, add outside protruding edge, satisfy and install the requirement between slewing bearing fixed part and slewing bearing rotary part with stator and rotor axial, when avoiding radially installing stator and rotor like this, need set up the recess on slewing bearing fixed part and/or slewing bearing rotary part, reduce slewing bearing's mechanical strength, make it be out of shape easily, easily cause the damage, so this axial magnetoelectric formula driftage system structure is more firm, non-deformable, it is not fragile.
3. The utility model discloses the mounting means of stator and rotor is nimble, only needs corresponding replacement to fall the part of damage during the change, need not thoroughly transfer the cabin from slewing bearing, has saved work load greatly, shortens the part and changes the time, improves maintenance efficiency.
4. The utility model discloses still through setting up the closing plate, can realize the regional sealed of stator and rotor place, prevent the entering of foreign matters such as dust, impurity, influence the relative motion of the stator that electromagnetic induction produced and rotor. And the yaw system is made of the abrasion-resistant sealing material, so that the service life of the yaw system can be prolonged better.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is a schematic structural diagram of the yawing system of the generator set of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
The utility model discloses to the defect of current generating set driftage system, provided a non-contact magnetoelectric driftage drive mode, replaced current contact gear engagement driftage drive mode. The non-contact magnetoelectric yaw driving mode and the yaw system are used for a yaw system of a wind turbine generator, and the specific embodiment is described as follows:
referring to fig. 1 and 2, the wind turbine yaw system in the embodiment includes a fixed slewing bearing part 1 and a rotating slewing bearing part 2, where the fixed slewing bearing part 1 is fixedly connected with a wind turbine installation platform, and the rotating slewing bearing part 2 is fixedly connected with a nacelle of the wind turbine. The rotary support fixed part 1 and the rotary support rotary part 2 are movably connected through a bearing 3, and the type of the bearing 3 comprises but is not limited to a ball bearing, a column bearing and various combination modes and different numbers of the ball bearing and the column bearing.
The wind turbine generator yaw system further comprises a magnetoelectric yaw driving system, wherein the magnetoelectric yaw driving system comprises a stator 4 and a rotor 5 which are respectively and relatively fixed on the wind turbine generator slewing bearing fixing part 1 and the wind turbine generator slewing bearing rotating part 2, and a servo driving mechanism which provides exciting current for the rotor 5. The rotor 5 rotates relative to the stator 4 under the action of the servo driving mechanism, and further drives the rotating component 2 of the wind turbine generator set connected with the rotor to realize yawing motion relative to the fixed component 1 of the wind turbine generator set.
The stator 4 and the rotor 5 are arranged in an axial arrangement, which is: the stator 4 is arranged along the upper surface of the slewing bearing fixing part 1 in a continuous mode, and the installation mode includes but is not limited to fastener connection. The top end of the rotary supporting and rotating component 2 is provided with a convex edge 9 extending outwards, the rotor 5 is arranged along the lower surface of the convex edge 9, and the installation mode also comprises but is not limited to fastener connection. The protruding edge 9 is provided with a cable through hole 8 for passing a cable 7 for connecting the excitation coil in the rotor 5 and the servo drive mechanism. The arrangement of the axial arrangement mode can avoid the defects that when the stator 4 and the rotor 5 are installed in the radial direction, grooves need to be formed in the slewing bearing fixing part and/or the slewing bearing rotating part, the mechanical strength of the slewing bearing is reduced, the slewing bearing is easy to deform and damage.
Specifically, this stator 4 adopts the silicon steel sheet to fold and press and forms, and a plurality of evenly distributed's through-hole has been seted up to the axial on this stator 4 is close to the side of this rotor 5, all fixes in this through-hole to inlay and is equipped with the magnet steel and the curing of encapsulating, and this stator 4 is equivalent to a disk stator core who takes the magnet steel promptly.
The rotor 5 can be formed by laminating silicon steel sheets, a plurality of uniformly distributed groove bodies are axially formed in the side face, close to the stator 4, of the rotor 5, an excitation winding is embedded in each groove body, and the excitation winding is electrically connected with the servo driving mechanism. That is, the rotor 5 corresponds to a disk-like rotor core with field coils. Of course, the rotor 5 may also adopt a whole block of magnetic conductive metal as an iron core, and an excitation winding is wound outside the iron core, and the excitation winding is electrically connected to the servo driving mechanism and is used for receiving the excitation current provided by the servo driving mechanism to form an excitation magnetic field.
In this embodiment, the servo driving mechanism includes a driving motor and a frequency converter connected thereto, the frequency converter is used for being connected with the wind turbine main control system to receive a yaw instruction of the wind turbine main control system, and the driving motor applies a corresponding exciting current to the exciting winding of the rotor 5 after the frequency converter receives and converts the yaw instruction, so as to realize rotation of the rotor 5 relative to the stator 4.
In order to prevent foreign matters such as dust and foreign matters from entering the stator and the rotor, the yaw system of the present embodiment further includes a seal plate 6 disposed on the radially outer side surfaces of the stator 4 and the rotor 5. The sealing plate 6 is a cylindrical structure, the bottom edge of the cylindrical structure is fixedly connected with the outer side wall of the slewing bearing fixing part 1, and the mounting mode is preferably fixed by bolts. The top edge of the cylindrical structure is in sealing contact with the outer side wall of the ledge 9. That is, the seal plate 6 generates sealing friction with the rotary member 2 when the rotary member rotates, thereby achieving dynamic sealing during operation, preventing foreign matters such as dust and foreign substances from entering the space where the stator 3 and the rotor 4 are located, and providing a good dustproof effect. This closing plate 6 adopts antifriction sealing material to make, like the material for the rubber oil blanket, improves life.
In this embodiment, the protruding edge 9 is provided with a cable through hole 8 for passing a cable 7 connecting the field coil in the rotor 5 and the servo drive mechanism.
The yaw driving principle of the yaw system of the wind turbine generator set is as follows: because the stator 4 and the rotor 5 are respectively and oppositely and axially fixed on the slewing bearing fixing part 1 and the slewing bearing rotating part 2 of the wind turbine generator, the servo driving mechanism applies exciting current to an exciting winding of the rotor according to a received yaw instruction, namely the whole yaw driving system is equivalent to a disc type permanent magnet motor driven by a variable frequency driver, the relative movement of the rotor 5 relative to the stator 4 is realized through the interaction of an alternating electromagnetic field formed by the exciting current and a stator magnetic field, and then the rotor 5 drives the slewing bearing rotating part 2 to rotate relative to the slewing bearing fixing part 1 connected with the stator 4, so that the purpose of yawing is achieved.
The utility model discloses generating set driftage system and this magnetoelectric formula driftage drive method still can be used to the large-scale generating set such as trend ability, avoids traditional contact gear engagement driftage system to cause the damage because of inevitable wearing and tearing in long-term work, has greatly improved the life-span of driftage system. And because the mounting modes of the stator and the rotor are flexible, only damaged parts need to be replaced correspondingly during replacement, and the engine room does not need to be completely removed from the slewing bearing, so that the workload is greatly saved, the replacement time of the parts is shortened, and the maintenance efficiency is improved.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.
Claims (10)
1. The utility model provides a generating set driftage system, includes slewing bearing fixed part and slewing bearing rotary part, but pass through bearing swing joint between slewing bearing fixed part and the slewing bearing rotary part, its characterized in that still includes magnetoelectric driftage actuating system, magnetoelectric driftage actuating system is including setting up relatively respectively stator and rotor on slewing bearing fixed part and the slewing bearing rotary part, and for the rotor provides exciting current's servo drive mechanism, the rotor is in servo drive mechanism's effect down for the stator takes place to rotate, and then drives slewing bearing rotary part for slewing bearing fixed part realizes driftage.
2. The genset yaw system of claim 1 wherein the stator and rotor are disposed in an axial arrangement between the stationary and rotating members.
3. The genset yaw system of claim 2 wherein the stator is positioned along an upper surface of the stationary part of the rotary support and the top of the rotary part of the rotary support is positioned with a ledge extending outwardly therefrom, the rotor is positioned along a lower surface of the ledge, and the ledge has cable perforations.
4. The generating set yaw system of claim 3, wherein the stator is formed by laminating silicon steel sheets, a plurality of uniformly distributed through holes are formed in the side surface of the stator close to the rotor, and magnetic steel is fixedly embedded in each through hole.
5. The generating set yaw system according to claim 4, wherein the rotor is formed by laminating silicon steel sheets, a plurality of uniformly distributed grooves are formed in the side face, close to the stator, of the rotor, excitation windings are embedded in the grooves, and the excitation windings are electrically connected with the servo driving mechanism.
6. The generator set yaw system of claim 4, wherein the rotor is made of a single piece of magnetically permeable metal, and an excitation winding is wound around the iron core and electrically connected to the servo drive mechanism.
7. The genset yaw system of claim 3 further comprising a seal plate disposed on a radially outer side of the stator and rotor, the seal plate being a cylindrical structure having a bottom edge fixedly attached to the slewing bearing fixture and a top edge in sealing contact with an outer sidewall of the ledge.
8. The genset yaw system of claim 7 wherein the seal plate is made of a rubber oil seal.
9. The genset yaw system of claim 1 wherein the servo drive mechanism includes a drive motor and a frequency converter connected thereto, the frequency converter being connected to a genset master control system.
10. The genset yaw system of claim 1 wherein the bearings are ball bearings or post bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921263405.9U CN210622979U (en) | 2019-08-06 | 2019-08-06 | Generating set driftage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921263405.9U CN210622979U (en) | 2019-08-06 | 2019-08-06 | Generating set driftage system |
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| CN210622979U true CN210622979U (en) | 2020-05-26 |
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| CN201921263405.9U Active CN210622979U (en) | 2019-08-06 | 2019-08-06 | Generating set driftage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425082A (en) * | 2019-08-06 | 2019-11-08 | 国电联合动力技术有限公司 | A kind of generating set yaw system and method and yaw driving method |
| CN117072375A (en) * | 2023-10-13 | 2023-11-17 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
-
2019
- 2019-08-06 CN CN201921263405.9U patent/CN210622979U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425082A (en) * | 2019-08-06 | 2019-11-08 | 国电联合动力技术有限公司 | A kind of generating set yaw system and method and yaw driving method |
| CN117072375A (en) * | 2023-10-13 | 2023-11-17 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
| CN117072375B (en) * | 2023-10-13 | 2024-01-09 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
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