CN110792565B

CN110792565B - Main shaft-free direct-drive generator for wind power generation

Info

Publication number: CN110792565B
Application number: CN201910985495.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Cgn Beijing New Energy Technology Co ltd
Current assignee: CGN (Beijing) New Energy Technology Co.,Ltd.
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-12-25
Anticipated expiration: 2039-10-17
Also published as: CN110792565A

Abstract

The invention discloses a main shaft-free direct-driven generator for wind power generation, belonging to the technical field of wind power, the rotation of the wind wheel assembly can be directly transmitted to the rotor through the synchronous transmission action of the three-row roller combined turntable bearing on the basis of abandoning the traditional direct-drive shafting structure, thereby not only reducing the manufacturing cost and the quality, meanwhile, the power consumption cost of wind power generation can be reduced, good economic benefit and social benefit are achieved, the magnetostrictive displacement sensor is applied to carry out displacement monitoring on the turntable bearing, further acquiring the fit error of the inner ring and the outer ring of the turntable bearing, analyzing and calculating the outer ring adjusting numerical value of the turntable bearing based on a data processing mode, thereby compensating the inner ring deviation of the turntable bearing, achieving the high-precision matching within the new error range again, and the stator is locked after adjustment by adopting a regenerative connection mode, so that the stability and the safety of the self-adjusted generator are realized.

Description

Main shaft-free direct-drive generator for wind power generation

Technical Field

The invention relates to the technical field of wind power, in particular to a main shaft-free direct-drive generator for wind power generation.

Background

The wind power generator is an electric power device which converts wind energy into mechanical work, and the mechanical work drives a rotor to rotate so as to finally output alternating current. The wind-driven generator generally comprises wind wheels, a generator (including a device), a direction regulator (empennage), a tower, a speed-limiting safety mechanism, an energy storage device and other components.

The wind driven generator has simple working principle, the wind wheel rotates under the action of wind force, the kinetic energy of the wind is converted into mechanical energy of a wind wheel shaft, and the generator rotates under the drive of the wind wheel shaft to generate electricity. In a broad sense, wind energy is also solar energy, so that the wind power generator is a heat energy utilization generator which uses solar energy as a heat source and uses the atmosphere as a working medium.

With the technical progress of the wind power generation industry, the direct-drive permanent magnet generator is more and more popularized in the wind power generation industry. In the traditional shafting structure, except a main shaft, a bearing seat and a bearing, parts such as a check ring, an end cover, a gland, a sealing ring, an adjusting pad and the like are arranged, and some parts are even more than ten parts and are used for axially fixing and sealing the bearing. In addition, the shafting requires the axial direction of the bearing to be a negative clearance, and the requirement is met by selecting and matching an adjusting pad or matching a gland during assembly, so that the production efficiency is low, and the quality risk is high. Due to the complex structure of parts, the weight of the main shaft and the bearing seat is large, so that the weight of the whole machine is large and the cost is high.

In view of this, the direct drive generator without the main shaft is produced, the rotation of the rotor and the fan blades are synchronized through the bearing, the manufacturing cost and the quality can be reduced, meanwhile, the power consumption cost of wind power generation can be reduced, good economic benefits and social benefits are achieved, contribution is made to further popularization of wind power generation, but the direct drive generator without the main shaft has the characteristics that the pressure-bearing main shaft is eliminated and is changed into the bearing synchronous transmission, therefore, the transmission pressure of the bearing is large, and the good operation of the bearing determines the matching precision between the stator and the rotor so as to generate the power efficiency, even the normal operation of the whole wind power generation system, and then in practical situations, radial errors of the bearing occur due to long-term pressure bearing, artificial or natural accidents, and once the radial errors occur, the abrasion is further increased, so that the bearing is scrapped and a power generation system is paralyzed.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a main shaft-free direct-drive generator for wind power generation, which can directly transmit the rotation of a wind wheel assembly to a rotor through the synchronous transmission action of a three-row roller combined turntable bearing on the basis of abandoning the structure of the traditional direct-drive shafting, not only can reduce the manufacturing cost and the quality, but also can reduce the power consumption cost of the wind power generation, has good economic benefit and social benefit, simultaneously, a magnetostrictive displacement sensor is applied to carry out displacement monitoring on the turntable bearing, so as to obtain the fit error of an inner ring and an outer ring of the turntable bearing, an outer ring adjusting value of the turntable bearing is analyzed and calculated based on a data processing mode, so as to compensate the inner ring deviation of the turntable bearing, achieve high-precision fit within a new error range again, and lock a stator after adjustment by adopting a regenerative connection mode, the stability and the safety of the generator after self-adjustment are realized.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A main shaft-free direct-drive generator for wind power generation comprises a cabin, wherein a tower barrel is fixedly connected to the lower end of the cabin, a wind wheel assembly is installed at the front end of the cabin and comprises a flow guide cover, blades and a hub, a shaftless assembly is installed in the cabin and comprises a turntable bearing, a rotor mounting flange, a rotor, a stator mounting flange and an adjusting base, the outer ring of the turntable bearing is sequentially connected with the stator mounting flange and the adjusting base through a first bolt, the inner ring of the turntable bearing is sequentially connected with the rotor mounting flange and the hub through a second bolt, the rotor mounting flange is fixedly connected with the rotor through a rotor support, the stator mounting flange is fixedly connected with the stator through the stator support, a fixing base is sleeved on the outer side of the adjusting base and is fixedly connected with the inner end of the cabin, adjust base outer end fixedly connected with cyclic annular arch, and cyclic annular arch and adjust integrated into one piece between the base, unable adjustment base the inner chisel have with cyclic annular protruding assorted annular laminating groove, install the pivot on adjusting the base, unable adjustment base the inner still install a pair of and pivot assorted fixing bearing, and interference fit between fixing bearing and the pivot, adjust the base and keep away from carousel bearing one end and install magnetostrictive displacement sensor, fixedly connected with L type contrast pole on carousel bearing's the inner circle inner wall, L type contrast pole is close to magnetostrictive displacement sensor one end fixedly connected with magnet piece, electric putter is installed to cabin the inner, and electric putter's output and regulation base lateral wall fixed connection.

Further, both ends all dig locking groove about unable adjustment base, locking inslot thread connection has novel locking bolt, the guide rail is still installed at unable adjustment base upper and lower both ends, sliding connection has the slider on the guide rail, install the motor that just reverses on the slider, and just reverse the output and novel locking bolt fixed connection of motor, guide rail and slider play the accurate guide effect to novel locking bolt indirectly, and the motor that just reverses plays the effect that drives novel locking bolt spiral shell and go into locking groove, and novel locking bolt is used for supporting the annular arch of tightly and then fixes a position the regulation base after adjusting.

Further, both ends have all been dug the adjustment tank about the annular bulge, the coating has fibre reinforcing thermoplastic layer in the adjustment tank, novel locking bolt lower extreme fixedly connected with heat conduction connecting block, novel locking bolt inner is dug there is the heating groove, the heating inslot fixedly connected with T type heat conduction cover, T type heat conduction cover inner end is inserted and is equipped with electric heating wire, electric heating wire electric connection has the battery, and fibre reinforcing thermoplastic layer can relapse and have plasticity all the time, is higher than being connected between fibre reinforcing thermoplastic layer plastify disconnection and the heat conduction connecting block when thermal deformation temperature, begins the cooling solidification when being less than thermal deformation temperature and resumes the relation of connection, and then improves novel locking bolt to annular bulge's positioning action.

Further, the candle spread groove that heat conduction connecting block lower extreme was dug has a plurality of evenly distributed, the candle spread groove includes fireworks portion and candle body portion, and the width of fireworks portion is greater than the width of candle body portion, fills the fibre reinforcement thermoplastic layer solidification back that gets into in the candle spread groove and is difficult for droing, and then improves and the power of being connected between the heat conduction connecting block.

Furthermore, a plurality of uniformly distributed annular grooves are formed in the side wall of the candle body, so that the connecting force between the fiber reinforced thermoplastic layer and the candle connecting groove is further improved.

Furthermore, the fiber reinforced thermoplastic plastic layer is prepared by mixing polyethylene and glass fibers, the glass fibers account for 10% -12% of the polyethylene content, the length of the glass fibers is 3-3.5mm, the mechanical strength and hardness of the fiber reinforced thermoplastic plastic layer are improved while the fiber reinforced thermoplastic plastic layer is thermoplastic, stress cracking can be inhibited, and the function of regeneration connection between the annular protrusion and the heat conduction connecting block is achieved.

Furthermore, the cross section of the annular attaching groove is in the shape of a minor arc sector, the angle corresponding to the minor arc sector is 30-60 degrees, self adjustment is allowed within a certain range, abnormal errors are caused after the range is exceeded, and timely maintenance is required.

Furthermore, the turntable bearing is a three-row roller combined turntable bearing, and the three-row cylindrical roller combined turntable bearing simultaneously bears axial load, overturning moment and radial load. Compared with a crossed cylindrical roller turntable bearing, the load of each roller is reduced, and compared with a double-row reducing ball turntable bearing, the contact stress is reduced by changing point contact into line contact, so that the bearing capacity of the double-row reducing ball turntable bearing is the highest bearing under the condition of the same external dimension. The axial load and the radial load of the structure are respectively born by different rollers, wherein the axial load and the overturning moment are born by two groups of rollers with horizontal axes, and the radial load is born by one group of rollers with vertical axes. Different raceways and rollers are borne, so that under the same stress condition, the diameter of the bearing can be greatly reduced, and the main machine is more compact and is a turntable bearing with high bearing capacity.

Further, install the control module who has the power in the cabin, control module is connected with data processing module, electric putter, positive and negative motor, magnetostrictive displacement sensor, electric heating wire and battery all are connected with control module, by control module centralized control operation, improve integrating and the intellectuality of system, convenient unified and remote management.

Furthermore, the control module is connected with a wireless communication module, the wireless communication module is connected with a cloud server, monitoring data and adjusting records are uploaded in real time, and technicians can check the data in time conveniently.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) on the basis that traditional direct drive shafting structure can be abandoned, through the synchronous drive effect of three rows of roller combination carousel bearings, directly transmit the rotation of wind wheel assembly to the rotor, cost and quality not only can be reduced, simultaneously, wind power generation's power consumption cost can be reduced, good economic benefits and social are had, use magnetostrictive displacement sensor to carry out displacement monitoring to the carousel bearing simultaneously, and then obtain carousel bearing's interior outer lane cooperation error, the outer lane adjusting value of carousel bearing is calculated based on data processing's mode analysis, compensate the inner circle deviation of carousel bearing with this, reach the high accuracy cooperation within the new error range again, and adopt regeneration connection's mode to lock the stator after adjusting, the stability and the security of the generator after having realized the self-interacting.

(2) Locking grooves are drilled at the upper end and the lower end of the fixed base, novel locking bolts are connected to the inner threads of the locking grooves, guide rails are further installed at the upper end and the lower end of the fixed base, sliding blocks are connected to the guide rails, forward and reverse rotating motors are installed on the sliding blocks, the output ends of the forward and reverse rotating motors are fixedly connected with the novel locking bolts, the guide rails and the sliding blocks indirectly play a role in guiding the novel locking bolts, the forward and reverse rotating motors play a role in driving the novel locking bolts to be screwed into the locking grooves, and the novel locking bolts are used for abutting against annular protrusions and positioning the adjusting base after adjustment.

(3) Both ends have all been dug the adjustment tank about the annular bulge, the coating has fibre reinforcing thermoplastic layer in the adjustment tank, novel locking bolt lower extreme fixedly connected with heat conduction connecting block, novel locking bolt inner is dug there is the heating tank, fixedly connected with T type heat conduction cover in the heating tank, T type heat conduction cover inner end is inserted and is equipped with electric heating wire, electric heating wire electric connection has the battery, fibre reinforcing thermoplastic layer can relapse and have plasticity all the time, be higher than when thermal deformation temperature fibre reinforcing thermoplastic layer plastify disconnection and heat conduction connecting block between be connected, begin the cooling solidification when being less than thermal deformation temperature and resume the relation of connection, and then improve novel locking bolt and to annular bulge's positioning action.

(4) The candle spread groove that heat conduction connecting block lower extreme was dug has a plurality of evenly distributed, and the candle spread groove includes fireworks portion and candle body portion, and the width of fireworks portion is greater than the width of candle body portion, fills the fibre reinforcement thermoplastic layer solidification back that gets into in the candle spread groove difficult droing, and then improves and the power of being connected between the heat conduction connecting block.

(5) A plurality of evenly distributed annular grooves are formed in the side wall of the candle body, and the connecting force between the fiber reinforced thermoplastic layer and the candle connecting groove is further improved.

(6) The fiber reinforced thermoplastic plastic layer is prepared by mixing polyethylene and glass fiber, the glass fiber accounts for 10% -12% of the content of the polyethylene, the length of the glass fiber is 3-3.5mm, the fiber reinforced thermoplastic plastic layer has thermoplasticity, improves the mechanical strength and hardness of the fiber reinforced thermoplastic plastic layer, can inhibit stress cracking, and plays a role in regenerating and connecting the annular protrusion and the heat-conducting connecting block.

(7) The cross section of the annular attaching groove is in the shape of a minor arc sector, the angle corresponding to the minor arc sector is 30-60 degrees, self adjustment is allowed within a certain range, abnormal errors are caused after the range is exceeded, and timely maintenance is required.

(8) The turntable bearing is a three-row roller combined turntable bearing, and the three-row cylindrical roller combined turntable bearing simultaneously bears axial load, overturning moment and radial load. Compared with a crossed cylindrical roller turntable bearing, the load of each roller is reduced, and compared with a double-row reducing ball turntable bearing, the contact stress is reduced by changing point contact into line contact, so that the bearing capacity of the double-row reducing ball turntable bearing is the highest bearing under the condition of the same external dimension. The axial load and the radial load of the structure are respectively born by different rollers, wherein the axial load and the overturning moment are born by two groups of rollers with horizontal axes, and the radial load is born by one group of rollers with vertical axes. Different raceways and rollers are borne, so that under the same stress condition, the diameter of the bearing can be greatly reduced, and the main machine is more compact and is a turntable bearing with high bearing capacity.

(9) The control module with the power supply is installed in the engine room, the control module is connected with the data processing module, the electric push rod, the forward and reverse rotating motor, the magnetostrictive displacement sensor, the electric heating wire and the battery are all connected with the control module, the control module is used for centralized control operation, integration and intellectualization of the system are improved, and convenience in unification and remote management are achieved.

(10) The control module is connected with the wireless communication module, and the wireless communication module is connected with the cloud ware, uploads monitoring data and regulation record in real time, makes things convenient for the technical staff in time to look over.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the interior of the nacelle of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a side view of the interior of the nacelle of the present invention;

FIG. 5 is a schematic view of the internal structure of the novel locking bolt of the present invention;

FIG. 6 is a schematic view of the structure at B in FIG. 5;

fig. 7 is a schematic structural view of the stator and the rotor in a state before and after adjustment.

The reference numbers in the figures illustrate:

the novel magnetic control type wind power generation device comprises a cabin 1, a tower barrel 2, a flow guide cover 3, blades 4, a hub 5, a turntable bearing 6, a rotor mounting flange 7, a rotor 8, a stator 9, a stator mounting flange 10, an adjusting base 11, a fixing base 12, a rotating shaft 13, an electric push rod 14, an annular bulge 15, a novel locking bolt 16, a guide rail 17, a slide block 18, a positive and negative rotating motor 19, a magnetostrictive displacement sensor 20, a 21L-shaped contrast rod, a magnet 22, an adjusting groove 23, a fiber reinforced thermoplastic layer 24, a heat conduction connecting block 25, a heat conduction sleeve 26T, an electric heating wire 27, a battery 28, a candle connecting groove 29 and an annular groove 30.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.

Example 1:

referring to fig. 1, a main shaft-free direct-drive generator for wind power generation comprises a nacelle 1, a tower barrel 2 is fixedly connected to the lower end of the nacelle 1, a wind wheel assembly is mounted at the front end of the nacelle 1 and comprises a guide cover 3, blades 4 and a hub 5, referring to fig. 2, a shaftless assembly is mounted in the nacelle 1 and comprises a turntable bearing 6, a rotor mounting flange 7, a rotor 8, a stator 9, a stator mounting flange 10 and an adjusting base 11, the turntable bearing 6 is a three-row roller combined turntable bearing, and the three-row cylindrical roller combined turntable bearing simultaneously bears axial load, overturning moment and radial load. Compared with a crossed cylindrical roller turntable bearing, the load of each roller is reduced, and compared with a double-row reducing ball turntable bearing, the contact stress is reduced by changing point contact into line contact, so that the bearing capacity of the double-row reducing ball turntable bearing is the highest bearing under the condition of the same external dimension. The axial load and the radial load of the structure are respectively born by different rollers, wherein the axial load and the overturning moment are born by two groups of rollers with horizontal axes, and the radial load is born by one group of rollers with vertical axes. Different raceways and rollers bear, so under equal atress condition, the diameter of bearing can dwindle greatly, therefore make the host computer compacter, be a high bearing capacity's slewing bearing, slewing bearing 6's outer lane is connected with stator mounting flange 10 and regulation base 11 through first bolt in proper order, slewing bearing 6's inner circle passes through the second bolt and is connected with rotor mounting flange 7 and wheel hub 5 in proper order, rotor mounting flange 7 passes through rotor support and rotor 8 fixed connection, stator mounting flange 10 passes through stator support and stator 9 fixed connection, it is equipped with unable adjustment base 12 to adjust the base 11 outside cover, and unable adjustment base 12 and the inner fixed connection in cabin 1.

Referring to fig. 3-4, an annular protrusion 15 is fixedly connected to an outer end of the adjusting base 11, the annular protrusion 15 and the adjusting base 11 are integrally formed, an annular attaching groove matched with the annular protrusion 15 is chiseled at an inner end of the fixing base 12, a cross section of the annular attaching groove is shaped like a minor arc sector, an angle corresponding to the minor arc sector is 30-60 degrees, self adjustment is allowed within a certain range, abnormal errors are caused after the range is exceeded, timely maintenance is required, adjustment of the adjusting base 11 in the fixing base 12 can be realized through matching between the annular protrusion 15 and the annular attaching groove, a rotating shaft 13 is installed on the adjusting base 11, a pair of fixed bearings matched with the rotating shaft 13 is also installed at the inner end of the fixing base 12, and interference fit is achieved between the fixed bearings and the rotating shaft 13, thereby rotation adjustment of the adjusting base 11 can be realized, and a traditional stator fixing form is changed, adopt the deviation that the adjustable form comes the compensation rotor, adjust base 11 and keep away from carousel bearing 6 one end and install magnetostrictive displacement sensor 20, adopt the magnetostrictive principle to measure the displacement, fixedly connected with L type contrast pole 21 on the inner circle inner wall of carousel bearing 6, play the effect of the deviation of the inner circle of amplifying carousel bearing 6, enlarge its radial deviation to the displacement of L type contrast pole 21 tail end, detect the displacement change and then analyze out the deviation by magnetostrictive displacement sensor 20, L type contrast pole 21 is close to magnetostrictive displacement sensor 20 one end fixedly connected with magnet piece 22, improve detection speed and precision in response the magnetostrictive principle, electric putter 14 is installed to cabin 1 inner, and electric putter 14's output and adjusting base 11 lateral wall fixed connection, provide the drive power that push-and-pull adjusting base 11 and then realize rotation regulation.

Referring to fig. 2-3, the upper and lower ends of the fixing base 12 are both chiseled with locking grooves, the locking grooves are connected with a novel locking bolt 16 by internal threads, the upper and lower ends of the fixing base 12 are also provided with guide rails 17, the guide rails 17 are connected with sliders 18 in a sliding manner, the sliders 18 are provided with a forward and reverse rotation motor 19, the output end of the forward and reverse rotation motor 19 is fixedly connected with the novel locking bolt 16, the guide rails 17 and the sliders 18 indirectly play a role of accurately guiding the novel locking bolt 16, the forward and reverse rotation motor 19 plays a role of driving the novel locking bolt 16 to be screwed into the locking grooves, the novel locking bolt 16 is used for tightly supporting the annular protrusion 15 and further positioning the adjusted adjusting base 11, the upper and lower ends of the annular protrusion 15 are both chiseled with adjusting grooves 23, the adjusting grooves 23 are internally coated with fiber reinforced thermoplastic layers 24, the fiber reinforced thermoplastic layers 24, and the glass fiber accounts for 10% -12% of the polyethylene content, the length of the glass fiber is 3-3.5mm, the thermoplastic property is provided, the mechanical strength and the hardness are improved, the stress cracking can be inhibited, the regeneration connection effect between the annular bulge 15 and the heat conduction connection block 25 is achieved, the lower end of the novel locking bolt 16 is fixedly connected with the heat conduction connection block 25, please refer to fig. 5, a heating groove is formed at the inner end of the novel locking bolt 16, a T-shaped heat conduction sleeve 26 is fixedly connected in the heating groove, an electric heating wire 27 is inserted at the inner end of the T-shaped heat conduction sleeve 26, the electric heating wire 27 is electrically connected with a battery 28, the fiber reinforced thermoplastic layer 24 can be repeatedly and always has plasticity, the connection between the fiber reinforced thermoplastic layer 24 and the heat conduction connection block 25 is plasticized and disconnected when the temperature is higher than the thermal deformation temperature, and, thereby improving the positioning function of the novel locking bolt 16 on the annular bulge 15.

Referring to fig. 5-6, a plurality of candle connecting grooves 29 are uniformly distributed at the lower end of the heat-conducting connecting block 25, each candle connecting groove 29 includes a firework portion and a candle portion, the width of the firework portion is greater than that of the candle portion, the fiber reinforced thermoplastic layer 24 filled into the candle connecting grooves 29 is not easy to fall off after being solidified, and therefore the connecting force between the candle connecting block 25 and the heat-conducting connecting block is improved, a plurality of uniformly distributed annular grooves 30 are formed in the side wall of the candle portion, and the connecting force between the fiber reinforced thermoplastic layer 24 and the candle connecting grooves 29 is further improved.

Install the control module who has the power in cabin 1, it can directly on the current control system in the generator to carry out functional expansion, control module is connected with data processing module, electric putter 14, positive and negative motor 19 that changes, magnetostrictive displacement sensor 20, electric heating wire 27 and battery 28 all are connected with control module, by control module centralized control operation, the integration and the intellectuality of improvement system, convenient unified and remote management, control module is connected with wireless communication module, wireless communication module includes but not only is limited to 3G, 4G, 5G communication module and wiFi module, wireless communication module is connected with the cloud ware, upload monitoring data and regulation record in real time, make things convenient for the technical staff in time to look over.

Because the outer ring of the turntable bearing 6, the stator 9 and other structures are in a locked stable mode in an initial state, and the inner ring of the turntable bearing 6, the rotor 8 and the wind wheel assembly are in a working mode of motion stress, radial errors occur on the inner ring of the turntable bearing 6 due to long-term pressure bearing, artificial or natural accident conditions, the transmission precision and the service life of the turntable bearing 6 are directly influenced, then the rotation of the rotor 8 is influenced, the power generation efficiency is seriously reduced or even a power generation system is paralyzed under the condition of matching with the stator 9, after the radial deviation occurs on the inner ring of the turntable bearing 6, the tail end of an L-shaped contrast rod 21 directly connected with the inner ring generates displacement change, after the change value is monitored by a magnetostrictive displacement sensor 20, the displacement change when the L-shaped contrast rod 21 rotates to the top end is preferably detected to be most accurate and convenient, and the rotation regulation value of the regulation base 11 is obtained after the change value is calculated and analyzed, it should be noted that the adjustment value is an angle that the adjustment base 11 should rotate to coincide when the L-shaped contrast rod 21 rotates to the top, the value is changed along with the position of the L-shaped contrast rod 21, the adjustment value when the L-shaped contrast rod 21 is located at the top is set in this embodiment, the electric heating wire 27 is controlled to start heating first, heat is transferred to the heat conduction connection block 25 through the T-shaped heat conduction sleeve 26, after the heat conduction connection block 25 heats the fiber reinforced thermoplastic layer 24 to the thermal deformation temperature, the fiber reinforced thermoplastic layer 24 melts and becomes plastic, the forward and reverse motor 19 is started to drive the novel locking bolt 16 to screw out from the locking groove, the locking relation to the annular protrusion 15 is released, at this time, the electric push rod 14 is controlled to push or pull the adjustment base 11 to rotate by a certain angle, and the stator mounting flange 10 and the stator 9 indirectly connected therewith are synchronously adjusted, referring to fig. 7, the initial matching state of the rotor 8 and the stator 9 is restored, the turntable bearing 6 is restored to a stable transmission state, the forward and reverse motor 19 is restarted to drive the novel locking bolt 16 to be screwed into the locking groove again, the heat-conducting connecting block 25 enters the adjusting groove 23 again, a part of the fiber reinforced thermoplastic layer 24 enters the candle connecting groove 29, the heating of the electric heating wire 27 is stopped, after the fiber reinforced thermoplastic layer 24 is cooled in the air, a technician can select to add a cooling module to accelerate the curing process, after the fiber reinforced thermoplastic layer 24 is cooled and cured, the regeneration connection between the annular protrusion 15 and the heat-conducting connecting block 25 is realized, the positioning of the adjusting base 11 is completed, and the locking state of the stator 9 is restored.

The invention can directly transmit the rotation of the wind wheel assembly to the rotor through the synchronous transmission action of the three-row roller combined turntable bearing on the basis of abandoning the traditional direct-driven shafting structure, not only can reduce the manufacturing cost and the quality, but also can reduce the power consumption cost of wind power generation, has good economic benefit and social benefit, simultaneously uses a magnetostrictive displacement sensor to carry out displacement monitoring on the turntable bearing, further obtains the matching error of the inner ring and the outer ring of the turntable bearing, analyzes and calculates the outer ring adjusting value of the turntable bearing based on a data processing mode, compensates the inner ring deviation of the turntable bearing, achieves high-precision matching within a new error range again, locks the stator after adjustment by adopting a regenerative connection mode, and realizes the stability and the safety of the self-adjusted generator.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a no main shaft directly drives generator for wind power generation, includes cabin (1), cabin (1) lower extreme fixedly connected with tower section of thick bamboo (2), the wind wheel assembly is installed to cabin (1) front end, the wind wheel assembly includes kuppe (3), blade (4) and wheel hub (5), its characterized in that: install no shafting assembly in cabin (1), no shafting assembly includes slewing bearing (6), rotor mounting flange (7), rotor (8), stator (9), stator mounting flange (10) and regulation base (11), the outer lane of slewing bearing (6) is connected with stator mounting flange (10) and regulation base (11) through first bolt in proper order, the inner circle of slewing bearing (6) is connected with rotor mounting flange (7) and wheel hub (5) through the second bolt in proper order, rotor mounting flange (7) is through rotor support and rotor (8) fixed connection, stator mounting flange (10) is through stator support and stator (9) fixed connection, it is equipped with unable adjustment base (12) to adjust base (11) outside cover, and unable adjustment base (12) and cabin (1) inner fixed connection, it has cyclic annular arch (15) to adjust base (11) outer end fixed connection, the annular bulge (15) and the adjusting base (11) are integrally formed, an annular attaching groove matched with the annular bulge (15) is arranged at the inner end of the fixed base (12) in a chiseled mode, a rotating shaft (13) is arranged on the adjusting base (11), a pair of fixed bearings matched with the rotating shaft (13) are also arranged at the inner end of the fixed base (12), and the fixed bearing is in interference fit with the rotating shaft (13), one end of the adjusting base (11) far away from the turntable bearing (6) is provided with a magnetostrictive displacement sensor (20), an L-shaped contrast rod (21) is fixedly connected on the inner wall of the inner ring of the turntable bearing (6), one end of the L-shaped contrast rod (21) close to the magnetostrictive displacement sensor (20) is fixedly connected with a magnet block (22), an electric push rod (14) is installed at the inner end of the engine room (1), the output end of the electric push rod (14) is fixedly connected with the side wall of the adjusting base (11);

locking grooves are drilled in the upper end and the lower end of the fixed base (12), a novel locking bolt (16) is connected to the locking grooves in an internal thread mode, guide rails (17) are further mounted at the upper end and the lower end of the fixed base (12), a sliding block (18) is connected onto the guide rails (17) in a sliding mode, a forward and reverse rotating motor (19) is mounted on the sliding block (18), and the output end of the forward and reverse rotating motor (19) is fixedly connected with the novel locking bolt (16);

adjusting grooves (23) are formed in the upper end and the lower end of the annular protrusion (15), a fiber reinforced thermoplastic layer (24) is coated in each adjusting groove (23), a heat conduction connecting block (25) is fixedly connected to the lower end of the novel locking bolt (16), a heating groove is formed in the inner end of the novel locking bolt (16), a T-shaped heat conduction sleeve (26) is fixedly connected in each heating groove, an electric heating wire (27) is inserted into the inner end of each T-shaped heat conduction sleeve (26), and each electric heating wire (27) is electrically connected with a battery (28);

the lower end of the heat conduction connecting block (25) is provided with a plurality of candle connecting grooves (29) which are uniformly distributed, each candle connecting groove (29) comprises a firework part and a candle body part, and the width of the firework part is greater than that of the candle body part;

a plurality of uniformly distributed annular grooves (30) are drilled on the side wall of the candle body part;

the fiber reinforced thermoplastic plastic layer (24) is prepared by mixing polyethylene and glass fiber, the glass fiber accounts for 10% -12% of the polyethylene content, and the length of the glass fiber is 3-3.5 mm;

the cross section of the annular attaching groove is in the shape of a minor arc sector, and the angle corresponding to the minor arc sector is 30-60 degrees;

the turntable bearing (6) is a three-row roller combined turntable bearing;

a control module with a power supply is installed in the engine room (1), the control module is connected with a data processing module, and the electric push rod (14), the forward and reverse rotation motor (19), the magnetostrictive displacement sensor (20), the electric heating wire (27) and the battery (28) are all connected with the control module;

the control module is connected with a wireless communication module, and the wireless communication module is connected with a cloud server.