CN107859587B - Horizontal shaft semi-integrated ocean current energy generator set - Google Patents
Horizontal shaft semi-integrated ocean current energy generator set Download PDFInfo
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- CN107859587B CN107859587B CN201711021006.7A CN201711021006A CN107859587B CN 107859587 B CN107859587 B CN 107859587B CN 201711021006 A CN201711021006 A CN 201711021006A CN 107859587 B CN107859587 B CN 107859587B
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- 238000007789 sealing Methods 0.000 claims abstract description 145
- 230000008878 coupling Effects 0.000 claims abstract description 29
- 238000010168 coupling process Methods 0.000 claims abstract description 29
- 238000005859 coupling reaction Methods 0.000 claims abstract description 29
- 239000013535 sea water Substances 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 73
- 230000007246 mechanism Effects 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 41
- 230000008901 benefit Effects 0.000 description 12
- 238000010248 power generation Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
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- 230000002457 bidirectional effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/006—Sealing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/02—Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/08—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/18—Regulating, i.e. acting automatically for safety purposes, e.g. preventing overspeed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/329—Azimuth or yaw angle
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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
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a horizontal shaft semi-integrated ocean current energy generator set, which comprises a propeller hub module, a main shaft gear box integrated module and a motor module which are sequentially arranged; the main shaft gear box integrated module comprises a main shaft, a power output shaft and a shell, a main shaft front end bearing seat and a main shaft rear end bearing seat are respectively arranged between two ends of the main shaft and the shell, the main shaft front end bearing seat is positioned on one side, facing the propeller hub module, of the main shaft rear end bearing seat surface, and a main shaft seal for preventing external seawater from entering the main shaft gear box integrated module is arranged between the main shaft front end bearing seat and the main shaft; a hub flange is arranged at one end, facing the main shaft, of the hub module, and a quick replacement sealing structure for quickly overhauling and replacing a sealing ring of the main shaft seal is arranged between the main shaft and the hub flange; the motor module comprises a motor input shaft, and an elastic coupling module is arranged between the power output shaft and the motor input shaft.
Description
Technical Field
The invention relates to a generator set, in particular to a horizontal shaft semi-integrated ocean current energy generator set.
Background
Energy shortage is a common problem faced by countries in the world at present, and the development of renewable energy is still slow. In the field of renewable energy, ocean current energy is clean renewable energy, and the ocean current energy in China has abundant reserves and great development and utilization potentials. Ocean current energy has the advantages of large energy density, strong predictability and the like, and a horizontal shaft ocean current energy generator is a device for converting ocean current energy into electric energy. Most of the existing horizontal-axis ocean current energy generators are unidirectional in power generation, unidirectional power generation technology is easier, and unidirectional power generation systems are fixed-pitch devices and variable-pitch devices. In many offshore terrains, the tide rises and falls, and two-way power generation needs to be realized to improve the power generation capacity, wherein the two-way power generation capacity is twice of the one-way power generation capacity; and the two methods for realizing the bidirectional power generation of the horizontal shaft ocean current energy generator are set yawing and blade reversing. One method is as follows: the paddle reversing is to carry out 180-degree reversing variable pitch control on the paddle; another method is to add a yaw device to the unidirectional power generation system to perform 180 ° yaw.
At present, research hotspots in the field of ocean current energy mainly focus on the following aspects: (1) a hydrodynamic design method of the blades of the ocean current energy generator; (2) designing a blade distance-adjustable mechanism; (3) designing and researching an installation and support mode; (4) researching and inhibiting blade cavitation; (5) the research on the layout of the generator set, such as an integrated or modular structure; (6) designing a new concept of the ocean current energy generator; (7) the long life design of sealed under water.
In the ocean operational environment, must face the problem that the suspension fishing net twines, if the ocean current can the generating set if do not have self preservation safeguard measure, twine by the fishing net, will take place the unit card and die, unable normal operating, lead to the condition that whole unit destroys even. In addition, unlike atmospheric environments, marine fouling is also a concern, and growth of bacteria, algae, biological larvae, etc. can lead to accelerated erosion damage to the leaves. The paddle is often made of composite materials, after the paddle is soaked in seawater for a long time, the strength of the paddle is reduced, and the paddle is broken off in use, so that a unit is impacted by load; damage to the bearings and gears can result.
The existing ocean current energy generator set adopts an integrated integral layout structure, for example, a horizontal shaft ocean current energy generator set and a speed increasing box thereof disclosed in the Chinese patent application with the publication number of CN106894939A can meet the use requirements, but still have the problems of inconvenient maintenance and the like, and particularly cause great difficulty for the maintenance and repair in the ocean operation environment.
Disclosure of Invention
In view of this, the invention aims to provide a horizontal shaft semi-integrated ocean current energy generator set, which adopts a semi-integrated overall layout structure and has the advantages of high reliability, easy maintenance and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
a horizontal shaft semi-integrated ocean current energy generator set comprises a propeller hub module, a main shaft gear box integrated module and a motor module which are sequentially arranged; the main shaft gear box integrated module comprises a main shaft, a power output shaft and a shell, a main shaft front end bearing seat and a main shaft rear end bearing seat are respectively arranged between two ends of the main shaft and the shell, the main shaft front end bearing seat is positioned on one side, facing the propeller hub module, of the main shaft rear end bearing seat surface, and a main shaft seal for preventing external seawater from entering the main shaft gear box integrated module is arranged between the main shaft front end bearing seat and the main shaft; a hub flange is arranged at one end, facing the main shaft, of the hub module, and a quick replacement sealing structure for quickly overhauling and replacing a sealing ring of the main shaft seal is arranged between the main shaft and the hub flange; the motor module comprises a motor input shaft, and an elastic coupling module is arranged between the power output shaft and the motor input shaft.
Furthermore, a conical section is arranged at the end part of the main shaft facing the propeller hub module, the outer diameter of the conical section is gradually increased along the direction of the propeller hub module pointing to the motor module, a conical central hole matched with the conical section is arranged on the propeller hub flange, and the main shaft and the propeller hub flange are in conical keyless connection by utilizing the conical section and the conical central hole; the quick replacement sealing structure comprises a ring groove arranged between the conical section and the combining surface of the conical central hole, and a high-pressure oil or disassembly oil pressure adjusting structure for separating the main shaft from the hub flange is connected to the ring groove.
Further, dismantle oil pressure and adjust structure including setting up the main shaft towards hole in the middle of the main shaft on the one end terminal surface of propeller hub module, hole in the middle of the main shaft with be equipped with interface channel between the annular, the drill way department of hole in the middle of the main shaft is equipped with rather than screw-thread fit's dismantlement plunger, or the drill way department of hole in the middle of the main shaft is equipped with the connection structure who is used for connecting the high-pressure oil pump.
Further, the taper of the tapered section is 1 (20-50).
Furthermore, the elastic coupling module comprises an elastic coupling for connecting the power output shaft and the motor input shaft, the elastic coupling comprises a first connecting sleeve which is sleeved on the power output shaft and rotates synchronously with the power output shaft and a second connecting sleeve which is sleeved on the motor input shaft and rotates synchronously with the motor input shaft, and plum rubber is arranged between the first connecting sleeve and the second connecting sleeve;
a first expansion sleeve sleeved on the power output shaft is arranged between the first connecting sleeve and the power output shaft, the outer diameter of the first expansion sleeve is gradually increased along the direction from the first connecting sleeve to the second connecting sleeve, and a first conical inner hole matched with the first expansion sleeve is arranged in the first connecting sleeve;
the second expansion sleeve is sleeved on the motor input shaft and arranged between the second connecting sleeve and the motor input shaft, the outer diameter of the second expansion sleeve is gradually reduced along the direction of the first connecting sleeve pointing to the second connecting sleeve, and a second tapered inner hole matched with the second expansion sleeve is arranged in the second connecting sleeve.
The elastic coupling module further comprises a brake disc and a brake pad, wherein the brake disc is sleeved on the first connecting sleeve and synchronously rotates with the first connecting sleeve, and the brake pad is matched with the brake disc.
Further, the main shaft and the power output shaft are coaxially arranged, and a gear transmission mechanism is arranged between the main shaft and the power output shaft; the gear transmission mechanism comprises a primary flow dividing gear mechanism and a secondary flow converging gear mechanism;
the first-stage flow dividing gear mechanism comprises a first-stage large gear which is sleeved on the main shaft and rotates synchronously with the main shaft, first-stage shaft gears which are annularly and uniformly distributed by taking the axis of the main shaft as a central shaft are arranged in the shell, and the first-stage shaft gears are meshed with the first-stage large gear;
the second-stage confluence gear mechanism comprises second-stage large gears which are arranged in one-to-one correspondence with the first-stage shaft gears, and a second-stage shaft gear which is meshed with the second-stage large gears is arranged on the power output shaft;
the corresponding first-stage shaft gear and the second-stage large gear are coaxially arranged, and a transmission shaft is arranged between the corresponding first-stage shaft gear and the corresponding second-stage large gear.
Furthermore, the transmission shaft is an elastic torsion shaft, and an active damping device for controlling the damping value is connected to the elastic torsion shaft.
Further, initiative damping device includes fixed mounting's damping casing, be equipped with rather than the rotary fit's damping main shaft in the damping casing, the damping main shaft with correspond the transmission shaft links to each other, the suit is equipped with rather than synchronous pivoted damping rotor on the damping main shaft, the annular has all been laid damping teeth on the periphery wall of damping rotor, just the intussuseption of damping casing is equipped with and is used for adjusting damping main shaft rotates damped damping liquid.
Further, an output front end bearing seat and an output rear end bearing seat which are respectively positioned at two ends of the secondary shaft gear are arranged between the shell and the power output shaft, and the output front end bearing seat is positioned at one side of the output rear end bearing seat surface facing the main shaft; the main shaft front end bearing seat and the main shaft rear end bearing seat are respectively positioned on two sides of the primary gearwheel;
a first sealing cover is arranged between the bearing seat at the front end of the main shaft and the bearing seat at the rear end of the main shaft, a first sealing cavity is formed in the first sealing cover, the first sealing cavity is connected with a gravity oil tank, and a water leakage sensor is arranged in the gravity oil tank;
a second sealing structure is arranged between the main shaft rear end bearing block and the output front end bearing block, and a second sealing cavity is formed between the main shaft rear end bearing block and the output front end bearing block;
a third sealing cavity is arranged between the output front-end bearing seat and the output rear-end bearing seat;
a fourth sealing cavity covered outside the elastic coupling module is formed between the output rear end bearing seat and the motor module;
the motor module comprises a motor shell and a generator fixedly installed in the motor shell, the motor shell is connected with the shell in a sealing mode, a motor sealing cover arranged outside the generator in a covering mode is arranged in the motor shell, and a fifth sealing cavity is formed in the motor sealing cover.
Furthermore, the sealing modes among the first sealing cavity, the second sealing cavity, the third sealing cavity, the fourth sealing cavity and the fifth sealing cavity are sealed by rubber, and in the adjacent two stages of sealing cavities, the sealing pressure of the sealing cavity close to one side of the hub module is greater than that of the sealing cavity far away from one side of the hub module; or, mechanical sealing is adopted for sealing among the first sealing cavity, the second sealing cavity, the third sealing cavity, the fourth sealing cavity and the fifth sealing cavity, and in the adjacent two stages of sealing cavities, the sealing pressure of the sealing cavity close to one side of the hub module is smaller than the sealing pressure of the sealing cavity far away from one side of the hub module.
Further, the device also comprises a supporting tower cylinder hermetically connected with the shell; the propeller hub module comprises a hub and blade assemblies which are annularly and uniformly distributed on the hub, and the propeller hub flange is fixedly connected with the hub; the paddle component comprises paddles fixedly arranged at a fixed angle, and a yaw motor part is arranged in the supporting tower barrel; or the blade assembly comprises a blade with an angle capable of being adjusted within the range of 0-90 degrees, a yaw motor part is arranged in the supporting tower barrel, and a variable pitch mechanism and a variable pitch sensor are arranged on the main shaft; or the blade assembly comprises a blade with an angle capable of being adjusted within the range of 0-180 degrees, and the main shaft is provided with a variable pitch mechanism and a variable pitch sensor.
The invention has the beneficial effects that:
according to the horizontal shaft semi-integrated ocean current energy generator set, the integrated layout of the propeller hub module, the main shaft gear box integrated module and the motor module is adopted, so that the convenience of modularized production and assembly is realized, the integrity of an integrated structure is realized, the advantages of the modularized and integrated structure are integrated, and the advantages of high reliability and convenience in maintenance are realized;
the service life of the oil seal of the main shaft seal is much shorter than that of the main shaft gear box integrated module, so that the main shaft seal needs to be replaced in the using process; the existing ocean current energy generator set needs to return to a factory when the main shaft seal is replaced, so that the cost is huge and the consumed time is long; the horizontal shaft semi-integrated ocean current energy generator set can realize the replacement of the main shaft seal on the sea surface, and specifically comprises the following steps: the hub flange and the main shaft are connected in a taper keyless mode, an annular groove is formed in the joint face of the hub flange and the main shaft support, dismounting oil is introduced into the annular groove, the oil pressure of the dismounting oil is adjusted, the oil pressure of the dismounting oil is increased, the hub flange can be expanded, the conical section of the main shaft is compressed, and the hub flange is popped out, so that the hub flange and the main shaft can be quickly separated, and the maintenance and replacement of the main shaft seal are realized.
The oil pressure of the disassembly oil can be adjusted in various ways, such as the disassembly oil can be externally connected with high-pressure oil, and a disassembly oil pressure adjusting structure can also be arranged, namely, the middle hole of the main shaft is filled with the disassembly oil, the disassembly plunger and the center hole of the main shaft have extremely high precision, and the sealing performance is very high; when the dismounting plunger piston is screwed down, the pressure of the dismounting oil rises, the hub flange is expanded, the spindle head is compressed, the technical purpose of separating the spindle from the hub flange can be realized, and the dismounting plunger piston has the advantage of simple and reliable structure.
The invention also has the following advantages:
1) the first expansion sleeve is arranged in the first connecting sleeve of the elastic coupling, and the second expansion sleeve is arranged in the second connecting sleeve, so that the quick disassembly can be realized, and the overhaul and the maintenance are convenient; meanwhile, the plum blossom rubber is arranged between the first connecting sleeve and the second connecting sleeve, so that the shock absorption function and the insulation function are realized, and the shaft current can be prevented from damaging the bearing and the gear; meanwhile, the elastic coupling module is also provided with a brake disc and a brake pad, namely, the elastic coupling module has an overload protection function, and can effectively prevent the unit from overloading.
2) The transmission shaft is set to be an elastic torsion shaft, the active damping device used for controlling the damping value is connected and arranged on the elastic torsion shaft, when the vibration value is increased, the damping value is increased to reduce the vibration amplitude value, and when the flow rate exceeds the rated flow rate, the damping value is increased to reduce the torque peak value, so that the purpose of protecting the unit is achieved.
3) Through dividing into first seal chamber, the second seal chamber, the third seal chamber, fourth seal chamber and fifth seal chamber in the unit, each chamber is independent separately, there is different pressure differentials, and first seal chamber, the second seal chamber, the third seal chamber, fourth seal chamber and fifth seal chamber raise pressure gradually, first seal chamber leaks, only can influence first seal chamber, be equipped with water leakage sensor and gravity oil tank in the first seal chamber, the sealing pressure of first seal intracavity is greater than water pressure, if sealed inefficacy, lubricating oil can get into the aquatic, water leakage sensor will find first chamber leak water alarm, can not influence the second seal chamber, have reliable, the advantage of long-lived of sealed mode.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a schematic structural diagram of an embodiment of a horizontal-axis semi-integrated ocean current energy generator set of the invention, specifically, a mode of blade fixing is adopted;
3 FIG. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is detail C of FIG. 1;
FIG. 5 is detail D of FIG. 1;
FIG. 6 is a schematic structural diagram of a horizontal-axis semi-integrated ocean current energy generator set with adjustable blade angles;
FIG. 7 is a schematic view of the installation structure of a horizontal shaft semi-integrated ocean current energy generator set when a blade is fixed or the blade can be adjusted within the range of 0-90 degrees;
FIG. 8 is a schematic structural diagram of an active damping device;
fig. 9 is a cross-sectional view C-C of fig. 8.
FIG. 10 is a schematic view of the transmission when the blades are stationary;
FIG. 11 is a schematic view of the transmission when the blade is adjustable in the range of 0-90 °;
FIG. 12 is a schematic view of the transmission when the blade is adjustable within the range of 0-180.
Description of reference numerals:
100-a hub module; 200-a main shaft gear box integrated module; 300-a motor module;
1-a main shaft; 2-a power take-off shaft; 3-a shell; 4-a bearing seat at the front end of the main shaft; 5-a bearing seat at the rear end of the main shaft; 6-main shaft sealing; 7-a hub flange; 8-motor input shaft; 9-quick replacement of the sealing structure; 10-a conical section; 11-main shaft middle hole; 12-disassembling the plunger; 13-a pitch sensor; 14-a first coupling sleeve; 15-a second connecting sleeve; 16-a first expansion sleeve; 17-a second expansion sleeve; 18-brake disc; 19-brake pads; 20-plum blossom rubber; 21-first-stage bull gear; 22-primary shaft gear; 23-a secondary bull gear; 24-a secondary shaft gear; 25-a drive shaft; 26-an active damping device; 27-output front end bearing block; 28-output rear bearing block; 29-a first sealing boot; 30-a first sealed chamber; 31-gravity tank; 32-a second sealed cavity; 33-sealing; 34-a third sealed cavity; 35-a fourth sealed chamber; 36-motor housing; 37-a generator; 38-motor sealing cover; 39-a fifth sealed chamber; 40-a supporting tower; 41-a pitch mechanism; 42-a yaw motor component; 43-a damping housing; 44-damping spindle; 45-a damped rotor; 46-damping teeth; 47-damping fluid; 48-big end cap; 49-small end cap; 50-a bearing; 51-sealing structure.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Fig. 1 is a schematic structural diagram of an embodiment of a horizontal-axis semi-integrated ocean current energy generator set according to the invention. The horizontal shaft semi-integrated ocean current energy generator set comprises a propeller hub module 100, a main shaft gearbox integrated module 200 and a motor module 300 which are arranged in sequence. The main shaft gear box integrated module 200 comprises a main shaft 1, a power output shaft 2 and a shell 3, a main shaft front end bearing seat 4 and a main shaft rear end bearing seat 5 are respectively arranged between two ends of the main shaft 1 and the shell 3, the main shaft front end bearing seat 4 is positioned on one side of the main shaft rear end bearing seat 5 facing the propeller hub module 100, and a main shaft seal 6 for preventing external seawater from entering the main shaft gear box integrated module 200 is arranged between the main shaft front end bearing seat 4 and the main shaft 1. The end of the hub module 100 facing the main shaft 1 is provided with a hub flange 7, and a quick replacement sealing structure 9 for quickly repairing and replacing a sealing ring of the main shaft seal 6 is arranged between the main shaft 1 and the hub flange 7. The motor module 300 comprises a motor input shaft 8, and an elastic coupling module is arranged between the power output shaft 2 and the motor input shaft 8.
The end of the main shaft 1 facing the hub module 100 of the present embodiment is provided with a tapered section 10, the outer diameter of the tapered section 10 gradually increases along the direction from the hub module 100 to the motor module 300, the hub flange 7 is provided with a tapered central hole matched with the tapered section 10, and the main shaft 1 and the hub flange 7 are connected by the tapered section and the tapered central hole to realize a taper-free connection. The quick-change sealing structure of the embodiment comprises a ring groove arranged between the combination surface of the conical section 10 and the conical central hole, and a high-pressure oil or disassembly oil pressure adjusting structure for separating the main shaft 1 from the hub flange 7 is connected to the ring groove. The ring groove of the present embodiment is connected with a detaching oil pressure adjusting structure for separating the main shaft 1 from the hub flange 7. Specifically, the disassembly oil pressure adjusting structure comprises a main shaft middle hole 11 arranged on the end face of one end of the main shaft 1 facing the hub module 100, a connecting channel 13 is arranged between the main shaft middle hole 11 and the annular groove, a disassembly plunger 12 in threaded fit with the main shaft middle hole 11 is arranged at the orifice of the main shaft middle hole 11, or a connecting structure for connecting a high-pressure oil pump is arranged at the orifice of the main shaft middle hole 11, and the disassembly plunger 12 in threaded fit with the main shaft middle hole 11 is arranged at the orifice of the main shaft middle hole in the embodiment. The taper of the tapered section 10 of the embodiment is 1 (20-50), and the taper of the tapered section 10 of the embodiment is 1: 30. The oil pressure of the disassembly oil can be adjusted in various ways, such as the disassembly oil can be externally connected with high-pressure oil, and a disassembly oil pressure adjusting structure can be arranged, namely the disassembly oil is filled in the middle hole 11 of the main shaft, the disassembly plunger 12 and the main shaft center hole 11 have extremely high precision, and the sealing performance is very high; when the dismounting plunger 12 is screwed down, the pressure of the dismounting oil rises, the hub flange 7 is expanded, the shaft head of the main shaft 1 is compressed, the technical purpose of separating the main shaft 1 from the hub flange 7 can be realized, and the dismounting plunger has the advantages of simple and reliable structure.
Further, the elastic coupling module of this embodiment includes the elastic coupling who is used for connecting power output shaft 2 and motor input shaft 8, and the elastic coupling includes suit on power output shaft 2 and with power output shaft 2 synchronous rotation's first adapter sleeve 14 and suit on motor input shaft 8 and with motor input shaft 8 synchronous rotation's second adapter sleeve 15, is equipped with plum blossom rubber 20 between first adapter sleeve 14 and the second adapter sleeve 15. A first expansion sleeve 16 sleeved on the power output shaft 2 is arranged between the first connecting sleeve 14 and the power output shaft 2, the outer diameter of the first expansion sleeve 16 is gradually increased along the direction of the first connecting sleeve 14 pointing to the second connecting sleeve 15, and a first tapered inner hole matched with the first expansion sleeve 16 is arranged in the first connecting sleeve 14. A second expansion sleeve 17 sleeved on the motor input shaft 8 is arranged between the second connecting sleeve 15 and the motor input shaft 8, the outer diameter of the second expansion sleeve 17 is gradually reduced along the direction of the first connecting sleeve 14 pointing to the second connecting sleeve 15, and a second tapered inner hole matched with the second expansion sleeve 17 is arranged in the second connecting sleeve 15. Specifically, the elastic coupling module of this embodiment further includes a brake disc 18 that is sleeved on the first connecting sleeve 14 and rotates synchronously with the first connecting sleeve 14, and a brake pad 19 that is engaged with the brake disc 18. The first expansion sleeve 16 is arranged in the first connecting sleeve 14 of the elastic coupling, and the second expansion sleeve 17 is arranged in the second connecting sleeve 15, so that the quick disassembly can be realized, and the overhaul and the maintenance are convenient; meanwhile, the plum blossom rubber 20 is arranged between the first connecting sleeve 14 and the second connecting sleeve 15, so that the shock absorption function and the insulation function are realized, and the shaft current can be prevented from damaging the bearing and the gear; meanwhile, the elastic coupling module is also provided with a brake disc 18 and a brake pad 19, namely, the elastic coupling module has an overload protection function, and can effectively prevent the unit from overloading.
Further, the main shaft 1 and the power output shaft 2 of the present embodiment are coaxially disposed, and a gear transmission mechanism is disposed between the main shaft 1 and the power output shaft 2. The gear transmission mechanism comprises a first-stage flow dividing gear mechanism and a second-stage flow converging gear mechanism. The first-stage shunt gear mechanism of the embodiment comprises a first-stage large gear 21 which is sleeved on the main shaft 1 and synchronously rotates with the main shaft 1, first-stage shaft gears 22 which are annularly and uniformly arranged by taking the axis of the main shaft 1 as a central shaft are arranged in the shell 3, and the first-stage shaft gears 22 are meshed with the first-stage large gear 21. The second-stage confluence gear mechanism of the present embodiment includes second-stage large gears 23 provided in one-to-one correspondence with the first-stage shaft gears 22, and a second-stage shaft gear 24 engaged with the second-stage large gears 23 is provided on the power output shaft 2. The corresponding first-stage shaft gear 22 and the second-stage large gear 23 are coaxially arranged, and a transmission shaft 25 is arranged between the corresponding first-stage shaft gear 22 and the second-stage large gear 23. The first-stage shunt gear mechanism realizes power shunt, the second-stage confluence gear mechanism realizes power confluence, and a transmission shaft is arranged between the first-stage shaft gear 22 and the second-stage large gear 23 to play a role of a torsion shaft. The primary gearwheel 21 is connected with the main shaft 1 in a non-key way, is installed through a hot sleeve or hydraulic pressure, and can also be connected with a key in an interference way; the first-stage large gear 21 is meshed with the first-stage shaft gear 22, the number of the first-stage shaft gears 22 is three to four, the first-stage shaft gears 22 are annularly and uniformly distributed on the circumference, the common normal lines of the first-stage shaft gears 22 are preferably the same, and the first-stage shaft gear 22 and the transmission shaft 25 are preferably in interference coupling or tension coupling or spline coupling, which is power splitting. The secondary large gears 23 are connected with the transmission shaft 25 and are in keyed connection with the small interference, the number of the secondary large gears 23 is three or four corresponding to the number of the primary shaft gears 22, and the common normal lines of the secondary large gears 23 are preferably the same and are externally meshed with the secondary shaft gears 24. Specifically, the transmission shaft 25 of the present embodiment is an elastic torsion shaft, and an active damping device 26 for controlling the damping value is connected to the elastic torsion shaft. The active damping device 26 of this embodiment includes a fixedly mounted damping housing 43, a damping spindle 44 rotationally matched with the damping housing 43 is provided in the damping housing 43, the damping spindle 14 is connected to the corresponding transmission shaft 25, a damping rotor 45 synchronously rotating with the damping spindle 44 is provided on the damping spindle 44 in a sleeved manner, damping teeth 46 are uniformly and annularly provided on the outer peripheral wall of the damping rotor 45, a damping liquid 47 for adjusting the rotational damping of the damping spindle 44 is filled in the damping housing 43, the damping liquid 47 is energized, the change of the damping coefficient is in a direct proportion relation with the magnitude of the current, and the damping value of the damping liquid can be adjusted by adjusting the magnitude of the current. The damping shell 43 of the present embodiment is provided with a large end cap 48 and a small end cap 49 on the upper cover, bearings 50 are respectively arranged between the damping shell 43 and the large end cap 28 and the damping spindle 44, and sealing structures 51 for preventing damping fluid from leaking are respectively arranged between the damping shell and the damping spindle, between the damping shell and the large end cap, and between the large end cap and the small end cap. The transmission shaft 25 is set to be an elastic torsion shaft, the active damping device 26 for controlling the damping value is connected and arranged on the elastic torsion shaft, when the vibration value is increased, the damping value is increased to reduce the vibration amplitude value, and when the flow rate exceeds the rated flow rate, the damping value is increased to reduce the torque peak value, so that the purpose of protecting the unit is achieved.
Further, an output front end bearing seat 27 and an output rear end bearing seat 28 which are respectively positioned at two ends of the secondary shaft gear 24 are arranged between the shell 3 and the power output shaft 2, and the output front end bearing seat 27 is positioned at one side of the output rear end bearing seat 28 facing the main shaft 1; the main shaft front end bearing seat 4 and the main shaft rear end bearing seat 5 are respectively positioned at two sides of the primary gearwheel 21. A first sealing cover 29 is arranged between the main shaft front end bearing seat 4 and the main shaft rear end bearing seat 5 in the embodiment, a first sealing cavity 30 is formed in the first sealing cover 29, the first sealing cavity 30 is connected with a gravity oil tank 31, and a water leakage sensor is arranged in the gravity oil tank 31. A second sealing structure is provided between the main shaft rear end bearing block 5 and the output front end bearing block 27 of the present embodiment, and a second sealing cavity 32 is formed between the main shaft rear end bearing block 5 and the output front end bearing block 27, and the second sealing structure includes a seal 33 provided between the housing 3 and the main shaft rear end bearing block 5 and the output front end bearing block 27, respectively. A third seal chamber 34 is provided between the output front end bearing block 27 and the output rear end bearing block 28 in the present embodiment. A fourth sealed cavity 35 is formed between the output rear bearing block 28 and the motor module 300 and covers the elastic coupling module. The motor module 300 comprises a motor shell 36 and a generator 37 fixedly installed in the motor shell 36, the motor shell 36 is hermetically connected with the housing 3, a motor sealing cover 38 covering the generator 37 is arranged in the motor shell 36, and a fifth sealing cavity 39 is formed in the motor sealing cover 38.
Specifically, the sealing modes among the first sealing cavity 30, the second sealing cavity 32, the third sealing cavity 34, the fourth sealing cavity 35 and the fifth sealing cavity 39 are rubber sealing, and in the adjacent two stages of sealing cavities, the sealing pressure of the sealing cavity close to one side of the hub module is greater than that of the sealing cavity far away from one side of the hub module; or the sealing modes among the first sealing cavity, the second sealing cavity, the third sealing cavity, the fourth sealing cavity and the fifth sealing cavity adopt mechanical sealing, and in the adjacent two stages of sealing cavities, the sealing pressure of the sealing cavity close to one side of the propeller hub module is smaller than the sealing pressure of the sealing cavity far away from one side of the propeller hub module. Specifically, when the first seal cavity, the second seal cavity, the third seal cavity, the fourth seal cavity and the fifth seal cavity are sealed by rubber, and in the adjacent two stages of seal cavities, the difference between the seal pressure of the seal cavity close to one side of the propeller hub module and the seal pressure of the seal cavity far away from one side of the propeller hub module is 0.03-0.1 MPa; or when the first sealing cavity, the second sealing cavity, the third sealing cavity, the fourth sealing cavity and the fifth sealing cavity are mechanically sealed, and in the adjacent two stages of sealing cavities, the difference value between the sealing pressure of the sealing cavity far away from the propeller hub module and the sealing pressure of the sealing cavity close to the propeller hub module is 0.03-0.1 MPa. In the embodiment, the sealing modes between the first sealing cavity 30, the second sealing cavity 32, the third sealing cavity 34, the fourth sealing cavity 35 and the fifth sealing cavity 39 adopt rubber sealing, and the difference between the sealing pressure of the sealing cavity at one side close to the hub module and the sealing pressure of the sealing cavity at one side far from the hub module in the adjacent two-stage sealing cavities is 0.08 MPa. Through dividing into first seal chamber, second seal chamber, third seal chamber, fourth seal chamber and fifth seal chamber in the unit, each chamber is independent separately, there is different pressure differentials, and first seal chamber, second seal chamber, third seal chamber, fourth seal chamber and fifth seal chamber raise pressure gradually, first seal chamber leaks, only can influence first seal chamber, be equipped with water leakage sensor and gravity oil tank 31 in the first seal chamber, the sealing pressure in first seal chamber 30 is greater than water pressure, if sealed inefficacy, lubricating oil can get into the aquatic, water leakage sensor will find first chamber leak water alarm, can not influence the second seal chamber, have reliable, the advantage of long-lived of sealed mode.
Further, the horizontal shaft semi-integrated ocean current energy generator set of the embodiment further comprises a supporting tower drum 40 hermetically connected with the shell 3, the supporting tower drum 40 can be arranged above or below the shell 3, and when the supporting tower drum 40 is arranged above the shell 3, suspension type installation is adopted; when the support tower 40 is disposed below the housing 3, it is installed in a subsea pile. The hub module 100 comprises a hub and blade assemblies which are annularly and uniformly distributed on the hub, and a hub flange 7 is fixedly connected with the hub. If the blade assembly comprises blades with fixed angles, a yaw motor part 42 is arranged in the support tower; or if the blade assembly comprises blades with the angle capable of being adjusted within the range of 0-90 degrees, a yaw motor part 42 is arranged in the supporting tower barrel 40, and a variable pitch mechanism 41 and a variable pitch sensor 13 are arranged on the main shaft 1; or if the blade assembly comprises blades with an angle adjustable in the range of 0-180 degrees, the main shaft 1 is provided with a pitch mechanism 41 and a pitch sensor 13.
The semi-integrated ocean current energy generator set with the horizontal shaft has the advantages that the semi-integrated ocean current energy generator set with the horizontal shaft has convenience in modularized production and assembly and integrity of an integrated structure through the integral layout of the propeller hub module, the main shaft gear box integrated module and the motor module, the advantages of the modularized production and assembly are integrated, and the semi-integrated ocean current energy generator set with the horizontal shaft has the advantages of being high in reliability and convenient to overhaul and maintain. The service life of the oil seal of the main shaft seal is much shorter than that of the main shaft gear box integrated module, so that the main shaft seal needs to be replaced in the using process; the existing ocean current energy generator set needs to return to a factory when the main shaft seal is replaced, so that the cost is huge and the consumed time is long; the horizontal shaft semi-integrated ocean current energy generator set can realize the replacement of the main shaft seal on the sea surface, and specifically comprises the following steps: the hub flange and the main shaft are connected in a taper keyless mode, an annular groove is formed in the joint face of the hub flange and the main shaft support, dismounting oil is introduced into the annular groove, the oil pressure of the dismounting oil is adjusted, the oil pressure of the dismounting oil is increased, the hub flange can be expanded, the conical section of the main shaft is compressed, and the hub flange is popped out, so that the hub flange and the main shaft can be quickly separated, and the maintenance and replacement of the main shaft seal are realized.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. The utility model provides a half integrated form ocean current energy generating set of horizontal axis which characterized in that: the main shaft gear box integrated module comprises a propeller hub module, a main shaft gear box integrated module and a motor module which are arranged in sequence; the main shaft gear box integrated module comprises a main shaft, a power output shaft and a shell, a main shaft front end bearing seat and a main shaft rear end bearing seat are respectively arranged between two ends of the main shaft and the shell, the main shaft front end bearing seat is positioned on one side, facing the propeller hub module, of the main shaft rear end bearing seat surface, and a main shaft seal for preventing external seawater from entering the main shaft gear box integrated module is arranged between the main shaft front end bearing seat and the main shaft; a hub flange is arranged at one end, facing the main shaft, of the hub module, and a quick replacement sealing structure for quickly overhauling and replacing a sealing ring of the main shaft seal is arranged between the main shaft and the hub flange; the motor module comprises a motor input shaft, and an elastic coupling module is arranged between the power output shaft and the motor input shaft;
the end part of the main shaft facing the propeller hub module is provided with a conical section, the outer diameter of the conical section is gradually increased along the direction of the propeller hub module pointing to the motor module, the propeller hub flange is provided with a conical central hole matched with the conical section, and the main shaft and the propeller hub flange realize conical keyless connection by utilizing the conical section and the conical central hole; the quick replacement sealing structure comprises a ring groove arranged between the conical section and the combining surface of the conical central hole, and a high-pressure oil or disassembly oil pressure adjusting structure for separating the main shaft from the hub flange is connected to the ring groove.
2. The horizontal-axis semi-integrated ocean current energy generating set of claim 1, wherein: dismantle oil pressure and adjust structure including setting up the main shaft towards hole in the middle of the main shaft on the one end terminal surface of propeller hub module, hole in the middle of the main shaft with be equipped with interface channel between the annular, the drill way department of hole in the middle of the main shaft is equipped with rather than screw-thread fit's dismantlement plunger, or the drill way department of hole in the middle of the main shaft is equipped with the connection structure who is used for connecting the high-pressure oil pump.
3. The horizontal-axis semi-integrated ocean current energy generating set of claim 1, wherein: the taper of the tapered section is 1 (20-50).
4. The horizontal-axis semi-integrated ocean current energy generating set of claim 1, wherein: the elastic coupling module comprises an elastic coupling used for connecting the power output shaft and the motor input shaft, the elastic coupling comprises a first connecting sleeve which is sleeved on the power output shaft and rotates synchronously with the power output shaft and a second connecting sleeve which is sleeved on the motor input shaft and rotates synchronously with the motor input shaft, and plum rubber is arranged between the first connecting sleeve and the second connecting sleeve;
a first expansion sleeve sleeved on the power output shaft is arranged between the first connecting sleeve and the power output shaft, the outer diameter of the first expansion sleeve is gradually increased along the direction from the first connecting sleeve to the second connecting sleeve, and a first conical inner hole matched with the first expansion sleeve is arranged in the first connecting sleeve;
a second expansion sleeve sleeved on the motor input shaft is arranged between the second connecting sleeve and the motor input shaft, the outer diameter of the second expansion sleeve is gradually reduced along the direction from the first connecting sleeve to the second connecting sleeve, and a second conical inner hole matched with the second expansion sleeve is arranged in the second connecting sleeve;
the elastic coupling module further comprises a brake disc and a brake pad, wherein the brake disc is sleeved on the first connecting sleeve and synchronously rotates with the first connecting sleeve, and the brake pad is matched with the brake disc.
5. The horizontal axis semi-integrated ocean current energy generating set according to any one of claims 1 to 4, wherein: the main shaft and the power output shaft are coaxially arranged, and a gear transmission mechanism is arranged between the main shaft and the power output shaft; the gear transmission mechanism comprises a primary flow dividing gear mechanism and a secondary flow converging gear mechanism;
the first-stage flow dividing gear mechanism comprises a first-stage large gear which is sleeved on the main shaft and rotates synchronously with the main shaft, first-stage shaft gears which are annularly and uniformly distributed by taking the axis of the main shaft as a central shaft are arranged in the shell, and the first-stage shaft gears are meshed with the first-stage large gear;
the second-stage confluence gear mechanism comprises second-stage large gears which are arranged in one-to-one correspondence with the first-stage shaft gears, and a second-stage shaft gear which is meshed with the second-stage large gears is arranged on the power output shaft;
the corresponding first-stage shaft gear and the second-stage large gear are coaxially arranged, and a transmission shaft is arranged between the corresponding first-stage shaft gear and the corresponding second-stage large gear.
6. The horizontal-axis semi-integrated ocean current energy generating set of claim 5, wherein: the transmission shaft is an elastic torsion shaft, and an active damping device for controlling the damping value is connected to the elastic torsion shaft.
7. The horizontal-axis semi-integrated ocean current energy generating set of claim 6, wherein: the active damping device comprises a fixedly mounted damping shell, a damping main shaft which is matched with the damping shell in a rotating mode is arranged in the damping shell, the damping main shaft is connected with the corresponding transmission shaft, a damping rotor which rotates synchronously with the damping main shaft is sleeved on the damping main shaft, damping teeth are annularly distributed on the peripheral wall of the damping rotor, and damping liquid used for adjusting the rotational damping of the damping main shaft is filled in the damping shell.
8. The horizontal-axis semi-integrated ocean current energy generating set of claim 5, wherein: an output front end bearing seat and an output rear end bearing seat which are respectively positioned at two ends of the secondary shaft gear are arranged between the shell and the power output shaft, and the output front end bearing seat is positioned at one side of the output rear end bearing seat surface facing the main shaft; the main shaft front end bearing seat and the main shaft rear end bearing seat are respectively positioned on two sides of the primary gearwheel;
a first sealing cover is arranged between the bearing seat at the front end of the main shaft and the bearing seat at the rear end of the main shaft, a first sealing cavity is formed in the first sealing cover, the first sealing cavity is connected with a gravity oil tank, and a water leakage sensor is arranged in the gravity oil tank;
a second sealing structure is arranged between the main shaft rear end bearing block and the output front end bearing block, and a second sealing cavity is formed between the main shaft rear end bearing block and the output front end bearing block;
a third sealing cavity is arranged between the output front-end bearing seat and the output rear-end bearing seat;
a fourth sealing cavity covered outside the elastic coupling module is formed between the output rear end bearing seat and the motor module;
the motor module comprises a motor shell and a generator fixedly arranged in the motor shell, the motor shell is hermetically connected with the shell, a motor sealing cover which covers the generator is arranged in the motor shell, and a fifth sealing cavity is formed in the motor sealing cover;
the sealing modes among the first sealing cavity, the second sealing cavity, the third sealing cavity, the fourth sealing cavity and the fifth sealing cavity are rubber sealing, and in the adjacent two stages of sealing cavities, the sealing pressure of the sealing cavity close to one side of the propeller hub module is greater than that of the sealing cavity far away from one side of the propeller hub module; or, mechanical sealing is adopted for sealing among the first sealing cavity, the second sealing cavity, the third sealing cavity, the fourth sealing cavity and the fifth sealing cavity, and in the adjacent two stages of sealing cavities, the sealing pressure of the sealing cavity close to one side of the hub module is smaller than the sealing pressure of the sealing cavity far away from one side of the hub module.
9. The horizontal-axis semi-integrated ocean current energy generating set of claim 1, wherein: the support tower is hermetically connected with the shell; the propeller hub module comprises a hub and blade assemblies which are annularly and uniformly distributed on the hub, and the propeller hub flange is fixedly connected with the hub; the paddle component comprises paddles fixedly arranged at a fixed angle, and a yaw motor part is arranged in the supporting tower barrel; or the blade assembly comprises a blade with an angle capable of being adjusted within the range of 0-90 degrees, a yaw motor part is arranged in the supporting tower barrel, and a variable pitch mechanism and a variable pitch sensor are arranged on the main shaft; or the blade assembly comprises a blade with an angle capable of being adjusted within the range of 0-180 degrees, and the main shaft is provided with a variable pitch mechanism and a variable pitch sensor.
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| GB0425303D0 (en) * | 2004-11-17 | 2004-12-15 | Overberg Ltd | Floating apparatus for deploying in a marine current for gaining energy |
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| CN203130827U (en) * | 2013-01-24 | 2013-08-14 | 天津龙创恒盛实业有限公司 | Quincuncial expansion sleeve type coupler |
| CN104389942A (en) * | 2014-10-01 | 2015-03-04 | 浙江师范大学 | Three-working surface rotary type damper based on magnetorheological fluid |
| CN105650136A (en) * | 2014-11-15 | 2016-06-08 | 陕西中大机械集团有限责任公司 | Expansion bushing buffering coupler |
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