CN204877775U - Trend can power generation facility - Google Patents
Trend can power generation facility Download PDFInfo
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- CN204877775U CN204877775U CN201520458418.7U CN201520458418U CN204877775U CN 204877775 U CN204877775 U CN 204877775U CN 201520458418 U CN201520458418 U CN 201520458418U CN 204877775 U CN204877775 U CN 204877775U
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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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- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The utility model provides a trend can power generation facility, including outer frame, two at least internal frames, two piece at least installation axle, drive unit, four at least horizontal axis hydraulic generator and six at least bearings. The detachable is liftoff respectively sets up in outer frame for two at least internal frames. Two piece at least installation axles rotationally set up respectively in every internal frame, two piece at least install the axle axis direction perpendicular to horizontal planes. Drive unit connects two piece at least installation axles and rotates with the drive installation axle. Per two horizontal axis hydraulic generator are fixed in one and install epaxially and be located same internal frame. Four at least horizontal axis hydraulic generator change the orientation along with the rotation of installation axle. An installation axle is established to every three bearing housing, locates both sides and centre that an epaxial three bearing of installation is located two horizontal axis hydraulic generator respectively.
Description
Technical field
The utility model relates to a kind of electricity generating device, particularly relates to a kind of tidal current energy generating equipment.
Background technique
Ocean energy refers to (comprising tidal energy, marine tidal-current energy, wave energy, energy by ocean current) energy of marine stream, as renewable energy sources, and rich reserves, widely distributed, there is fabulous DEVELOPMENT PROSPECT and value.The Land use systems of ocean energy mainly generates electricity, its working principle and wind-power electricity generation similar, namely by energy conversion device, convert the mechanical energy of seawater to electric energy.Specifically, first sea washes water turbine, the transformation of energy of current is the mechanical energy rotated by water turbine, and then water turbine is through the generating of machine driven system drive electrical generators, finally converts electric energy to.
Energy worsening shortages now, greenhouse effect are day by day serious, and the low carbonization of energy needs, so wind energy, the clean energy resourcies such as ocean energy are the developing direction of future source of energy.But the power generating equipment of these clean energy resourcies now, except Wind Power Utilization comparative maturity, the utilization of ocean energy is all also in the starting stage, does not have general and ripe equipment.Also there is inefficiency in existing a few devices, equipment can not the problem of large-scale.
Because ocean environment is complicated, in water, resistance is large, and the installation of traditional ocean power generating device all must be carried out in the sea, and degree of difficulty is high, and expense is huge.In addition, due to electricity generating device Long Term Contact seawater, under the long-term erosion and enormous impact power of seawater, will regularly repair or replace after ocean power generating device uses a period of time.But the maintenance of traditional ocean power generating device and replacing are also all carried out in the sea, degree of difficulty is high, and cost is huge.Even, because the damage of members, cause scrapping of whole ocean power generating device, this is one of major reason of ocean power generating device high cost, be also cause existing ocean power generating device cannot large-scale, commercial operation immediate cause.
Especially horizontal axis hydraulic turbine generator, due to its all devices (comprising impeller and generator) all under water, therefore the maintenance of horizontal axis hydraulic turbine generator is more difficult, and cost is higher.Therefore, even if the generating efficiency of horizontal axis hydraulic turbine generator is higher than vertical shaft hydraulic turbine generator, but horizontal axis hydraulic turbine generator still cannot commercialization.But the technician in current power generation with marine energy field have ignored the improvement to installation and maintenance mode.
In addition, because marine tidal-current energy utilizes the trend of ocean to generate electricity.Along with flood tide and ebb tide, the direction of trend can change.The more important thing is the speed of trend and non-constant.When installing electricity generating device, once generator is selected, its load capacity is just decided.But the speed of trend is also non-constant, therefore cause generated energy and non-constant.No matter existing ocean power generating device, in order to save cost and be subject to technical limitation, is the generation load that horizontal axis hydraulic turbine generator or vertical shaft hydraulic turbine generator can only be carried on below certain water velocity.Once water velocity increases, generated energy overloads, and generator can work overloadingly and be easy to damage.Therefore, in order to extend the operating life of generator, traditional ocean power generating device exceedes certain speed once trend and just thoroughly cuts off current, and generator is quit work.
Also have a kind of design adopting the ocean power generating device of horizontal axis hydraulic turbine generator to use for reference wind-driven generator, regulated the load of electricity generating device by the mode becoming oar.When water velocity is larger, by controlling device, the blade angle of attack is reduced; When water velocity is less, by controlling device, the blade angle of attack is increased.But there is very large drawback in this design.Be different from the Environmental Conditions of wind-driven generator, horizontal axis water turbine uses in water, and the resistance be subject to is far longer than the resistance that wind-driven generator is subject to.Further, be the blade angle of horizontal axis water turbine due to what regulate, rotating machinery is positioned in water all over, and the rotation that realize blade angle just needs to design the installation tightness degree between each parts of blade accurately.If connect very tight, frictional force is too large, be then difficult to the upstream face angle of adjustment blade, cause controlling device cannot play effect of adjustment.In this case electricity generating device cannot be raised the efficiency when current are too little, also really cannot protect generator when current are too large.If connect too pine, frictional force is too little, although can regulate like a cork, can there are these serious problems of loss of seal.Such current will pour into impeller internal and cause whole impeller failure, and maintenance rate improves greatly, the huge increasing of cost.
On the other hand, utilize ocean energy, especially marine tidal-current energy carries out the electricity generating device that generates electricity, and its rotating shaft used can be subject to current enormous impact power radially.After using a period of time, the seal ring between rotating shaft and traditional bearing easily deforms, and the sealing of bearing cannot ensure.Owing to cannot solve the high problem of sealing demand, existing ocean power generating device can only give up the rolling bearing adopting oil as oiling agent, selects the sliding bearing that can use water as oiling agent.But existing technical staff have ignored a problem.Must be able to be clear water as the water of oiling agent.In other words, due to normal containing a large amount of silt in current, if seal ring pours in bearing because resiliently deformable causes outside water to carry the impurity such as silt, the lubrication to bearing not only cannot be realized, also can affect the normal work of rotating shaft, finally affect the generating efficiency of electricity generating device.
Existing ocean power generating device all cannot solve how to promote water-bed lower bearing sealing problem.Therefore the control blade designed or the whirligig of generator all very complicated, a rotating shaft cannot be used alone and regulate.
Model utility content
The utility model, in order to overcome at least one deficiency of the prior art, provides a kind of tidal current energy generating equipment.
To achieve these goals, the utility model provides a kind of tidal current energy generating equipment, comprises external frame, at least two inner gimbals, at least two installation shaft, driver element, at least four horizontal axis hydraulic turbine generators and at least six bearings.At least two inner gimbals are arranged in external frame separably.At least two installation shaft are arranged at each inner gimbal respectively rotationally, and the axial direction of at least two installation shaft is perpendicular to horizontal plane.Driver element connects at least two installation shaft and rotates with drive installation axle.Every two horizontal axis hydraulic turbine generators to be fixed in an installation shaft and to be positioned at same inner gimbal.At least four horizontal axis hydraulic turbine generators with the rotation of installation shaft change towards.The sheathed installation shaft of every three bearings, three bearings be located in an installation shaft lay respectively at both sides and the centre of two horizontal axis hydraulic turbine generators.
In an embodiment of the present utility model, tidal current energy generating equipment also comprises at least four air guide sleeves, each air guide sleeve corresponds to each horizontal axis hydraulic turbine generator and arranges, at least four air guide sleeves are fixed on external frame or inner gimbal, each air guide sleeve has two water guide parts and an intermediate portion, intermediate portion is between two water guide sectors are divided, each water guide part is rectangle away from the cross section of one end of intermediate portion, the cross section that each water guide part connects one end of intermediate portion is circular, the cross section of intermediate portion is circular, cross-section normal is in horizontal plane and perpendicular to water (flow) direction, the area of circular cross section is less than the area of rectangular cross section.
In an embodiment of the present utility model, tidal current energy generating equipment also comprises underwater shaft system and rotates protective gear, and each underwater shaft system rotates protective gear and comprises oiling agent storage box, at least six seal rings and conduit.Oiling agent storage box stores oiling agent, and oiling agent storage box is positioned on the water surface.Every two seal rings correspond to a bearing and are sheathed in installation shaft, and every two seal rings form lubricant cavity with between corresponding bearing and installation shaft.One end of conduit is communicated with oiling agent storage box, and the other end is communicated with lubricant cavity.
In an embodiment of the present utility model, whether underwater shaft system rotates protective gear and also comprises detection module, be arranged at oiling agent storage box and reduce to detect oiling agent.
In an embodiment of the present utility model, bearing is sliding bearing, and each lubricant cavity is formed by two seal rings and bearing and installation shaft.
In an embodiment of the present utility model, bearing is rolling bearing, and underwater shaft system rotates protective gear and also comprises at least three bearing supports, and each lubricant cavity is formed by two seal rings, bearing, bearing support and installation shaft.
In an embodiment of the present utility model, external frame has multiple fixing stake, and external frame is fixed on seabed by the mode of piling.
In an embodiment of the present utility model, external frame has multiple reduction resistance to water-flow structure.
In sum; the tidal current energy generating equipment that the utility model provides is by arranging separable inner gimbal and external frame; make electricity generating device can carry out modularization assembling and replacement on the water surface; significantly reduce maintenance and mounting cost, overcome Conventional marine energy electricity generating device cannot commercialization, large-scale a difficult problem.And, at least two horizontal axis hydraulic turbine generators are set by coaxial on the mounting shaft and at least three bearings are set, " multi-point constraint " is realized to installation shaft, the scale of tidal current energy generating equipment not only can laterally also can longitudinally (depth of water direction perpendicular to horizontal plane) be expanded in (substantially horizontals perpendicular to current) expansion, increased substantially generated output, overcome existing ocean power generating device cannot " do large ", " doing dark " a difficult problem.By arranging installation shaft, innovatively by change whole horizontal axis generator towards and non-individual changes the meet water load of mode to generator at angle of blade and regulates, make no matter the much generators of water velocity can guarantee normal power generation in safe load always, drastically increase generating efficiency.The more important thing is, by arranging rotating installation shaft, such that no matter current whichaway flows into, the impeller of horizontal axis hydraulic turbine generator all the time towards current, thus can guarantee maximum generated output.Be particularly useful for utilizing tidal energy to generate electricity.
By arranging air guide sleeve, current are all concentrated guiding horizontal axle hydraulic turbine generator, make the impeller of horizontal axis hydraulic turbine generator stressed larger, rotating speed is faster, thus improves generating efficiency.The air guide sleeve provided in the utility model embodiment, two ends are rectangle, and centre is circular, no matter flood tide or ebb tide can play guide functions all the time, and have the air guide sleeve water conservancy diversion better effects if of this specified structure.
In addition, the underwater shaft system that the utility model provides rotates protective gear energy available protecting introduced contaminants, and the silt especially in water enters bearing, thus the normal work of available protecting bearing.The tidal current energy generating equipment that the utility model provides, by adopting underwater shaft system to rotate protective gear, while prolongation bearing working life, considerably reducing maintenance frequency and maintenance cost, effectively ensure that generating efficiency is unaffected simultaneously.In addition, the bearing in the tidal current energy generating equipment that the utility model provides can adopt rolling bearing, overcomes underwater shaft system in prior art and can only use the technology barriers of the sliding bearing of water lubrication.
Further, by arranging detection module, can know whether the sealing of bearing reduces in time and intuitively, thus effectively guide maintenance personnel when where is keeped in repair, improve promptness and the reliability of maintenance.In addition, because framework is separable external frame and inner gimbal, protective gear can be rotated to underwater shaft system quickly and easily and repair or replace, greatly reduce maintenance cost.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Accompanying drawing explanation
The schematic diagram of a built-in module of the tidal current energy generating equipment provided according to the utility model first embodiment is provided.
Figure 2 shows that the enlarged diagram of circle mark V in Fig. 1.
The schematic diagram of a built-in module of the tidal current energy generating equipment provided according to the utility model second embodiment is provided.
The plan view of the tidal current energy generating equipment provided according to the utility model the 3rd embodiment is provided.
The plan view of the tidal current energy generating equipment provided according to the utility model the 3rd embodiment is provided.
Figure 6 shows that the enlarged diagram of circle mark U in Fig. 4.
Figure 7 shows that the structural representation of the air guide sleeve that the utility model the 3rd embodiment provides.
Figure 8 shows that the plan view of the air guide sleeve that the utility model the 3rd embodiment provides.
Embodiment
The schematic diagram of a built-in module of the tidal current energy generating equipment provided according to the utility model first embodiment is provided.Figure 2 shows that the enlarged diagram of circle mark V in Fig. 1.Please also refer to Fig. 1 and Fig. 2.The tidal current energy generating equipment that the present embodiment provides comprises external frame 1, at least two inner gimbals 2, at least four horizontal axis hydraulic turbine generators 3, at least two installation shaft 4, at least six bearings 5 and driver element 6.
Depict only one of them built-in module 100 of tidal current energy generating equipment in Fig. 1, therefore only demonstrate an inner gimbal 2, two horizontal axis hydraulic turbine generators 3, installation shaft 4, three bearings 5 and driver element 6.The tidal current energy generating equipment of the utility model protection comprises at least two built-in modules 100.
At least two inner gimbals 2 are arranged in external frame 1 separably.In the present embodiment, inner gimbal 2 can be provided with snap fit (not shown), external frame 1 can be provided with draw-in groove (not shown), inner gimbal 2 is embedded in external frame 1 by the mutual engaging of snap fit and draw-in groove.But the utility model is not limited in any way the means of fixation between inner gimbal 2 and external frame 1.
An inner gimbal 2, at least two horizontal axis hydraulic turbine generators 3, at least one installation shaft 4 and at least three bearings 5 form a built-in module 100 jointly.In practical application, can first at least two horizontal axis hydraulic turbine generators 3, at least one installation shaft 4, at least one generator 5 and at least three bearings 5 be fixed in an inner gimbal 2, then the inner gimbal 2 assembled at least two is like this fixed in external frame 1, thus the modularization realizing tidal current energy generating equipment is installed.Specifically, the installation of built-in module 100 can be carried out on the coast, is then hung in by built-in module 100 to be placed in marine external frame 1 to be fixed with external frame 1, so realize the installation exercise on sea, greatly simplify installation procedure, reduce the installation time, reduce installation difficulty in ocean.
The concrete quantity of the utility model to inner gimbal 2 is not limited in any way.In practical application, the quantity of inner gimbal 2 can reach 12.By at least two inner gimbals 2 are arranged at external frame 1 separably, breach the drawback that existing Conventional marine tidal current energy generating equipment cannot realize scale.The generated energy of Ocean Tidal Current Energy generating single unit maximum in the world is at present 1.2 megawatts, but the generated energy of tidal current energy generating equipment single unit of the present utility model is 5 megawatts, far away higher than the maximum generating watt of existing Ocean Tidal Current Energy electricity generating device.
Horizontal axis hydraulic turbine generator 3 comprises impeller 31 and generator 32 (as shown in Figure 3).Due to the impeller 31 of horizontal axis hydraulic turbine generator 3 and generator 32 all under water, therefore, if horizontal axis hydraulic turbine generator 3 breaks down, needs keep in repair in the sea by traditional ocean power generating device.Such maintenance is very difficult and expense is huge.But, built-in module 100 can directly repair or replace from marine taking-up by tidal current energy generating equipment of the present utility model, quick-replaceable and maintenance on the sea realizing tidal current energy generating equipment, greatly reduce maintenance cost, the commercialization of tidal current energy generating equipment be achieved.
At least two installation shaft 4 are arranged at each inner gimbal 2 respectively rotationally.The axial direction X of installation shaft 4 is perpendicular to horizontal plane P.Every two horizontal axis hydraulic turbine generators 3 to be fixed in an installation shaft 4 and to be positioned at same inner gimbal 2.At least four horizontal axis hydraulic turbine generators 3 with the rotation of installation shaft 4 change towards.Driver element 6 connection axle 4 rotates with drive installation axle 4.Because the water (flow) direction of flood tide and ebb tide is contrary, no matter current whichaway flows into, and by the impeller 31 of the rotation level of control axle hydraulic turbine generator 3 of installation shaft 4 all the time towards current, thus improves the utilization ratio of marine tidal-current energy, improves generating efficiency.
In practical application, when current flow to tidal current energy generating equipment along the water (flow) direction shown in Fig. 3, driver element 5 does not operate.Now, the impeller 31 of horizontal axis hydraulic turbine generator 3 is towards current.When current flow to tidal current energy generating equipment along the direction (looking from Fig. 3 as from top to bottom) that water (flow) direction is contrary, driver element 6 drive installation axle 4 rotates, thus drive horizontal axis hydraulic turbine generator 3 to revolve turnback, make impeller 31 from changing into upward down, to ensure that the impeller 31 of horizontal axis hydraulic turbine generator 3 is all the time towards current.This kind of situation is particularly useful for utilizing tidal power, ensure that maximum generated output.
Especially, in practical application, flood tide is also not exclusively parallel with the water (flow) direction of ebb tide, also might not perpendicular to the upstream face of horizontal axis hydraulic turbine generator 3.No matter current pour in horizontal axis hydraulic turbine generator 3 from which direction, electricity generating device of the present utility model can change towards to make horizontal axis hydraulic turbine generator 3 all the time just to current by installation shaft 4 level of control axle hydraulic turbine generator 3, thus farthest utilize marine tidal-current energy, improve generated output.
And, when the rated velocity that the maximum load that actual water velocity can be born higher than horizontal axis hydraulic turbine generator 3 is corresponding, now only need rotate level of control axle hydraulic turbine generator 3 by installation shaft 4 to make it rotate to depart from water (flow) direction angle, then effectively can reduce the load of horizontal axis hydraulic turbine generator 3, while guaranteeing that horizontal axis hydraulic turbine generator 3 can not be damaged because of overburdening, guarantee that horizontal axis hydraulic turbine generator 3 still normally works, export generating sustainedly and stably.Overcome when water velocity is excessive in Conventional marine energy electricity generating device, generator, in order to avoid burning just out-of-work drawback, regulates without the need to carrying out change oar simultaneously, makes the Load Regulation of generator more effectively simple.When actual water velocity is less than rated velocity corresponding to maximum load that generator 3 can bear, now only need rotate level of control axle hydraulic turbine generator 3 by installation shaft 4 makes it rotate just to water (flow) direction (namely the upstream face of horizontal axis hydraulic turbine generator 3 is perpendicular to water (flow) direction), then can farthest utilize current to generate electricity, improve generated output.
In the present embodiment, the quantity of inner gimbal 2 equals the quantity of installation shaft 4, and the quantity of horizontal axis hydraulic turbine generator 3 equals the twice of the quantity of installation shaft 4.But the utility model is not limited in any way this.In other embodiment, a built-in module 100 can have in many installation shaft 4 and every root installation shaft 4 can have plural horizontal axis hydraulic turbine generator 3.
In the present embodiment, the quantity of driver element 6 corresponds to the quantity of installation shaft 4, is at least two.But the utility model does not do any restriction to this.In other embodiment, by driving mechanisms such as gears, a driver element 6 can be realized to the control of two installation shaft 4.Each driver element 6 comprises motor 61 and driving mechanism 62, and one end (upper end in Fig. 1) of driving mechanism 62 connection axle 4, motor 61 is rotated by driving mechanism 62 drive installation axle 4.In the present embodiment, the driven gear that driving mechanism 62 comprises driving gear and is meshed with driving gear.Motor 61 drives driving gear to rotate, thus drives driven gear to rotate.The gear hole of driven gear and the upper end of installation shaft 4 closely cooperate, thus drive installation shaft 4 to rotate.But the utility model is not limited in any way this.In other embodiment, driver element can comprise motor and speed reducer.Because existing motor speed is all very fast, greatly reduced by rotating speed after speed reducer, therefore can effectively and control rotating speed and the rotation amplitude of installation shaft 4 accurately.
The sheathed installation shaft 4 of every three bearings 5, as shown in Figure 1, two bearings 5 be located in an installation shaft 4 lay respectively at the both sides up and down of two horizontal axis hydraulic turbine generators 3, also have a bearing 5 between two horizontal axis hydraulic turbine generators 3.
By arranging two and plural horizontal axis hydraulic turbine generator 3 on the D1 of depth of water direction, greatly can expand the degree of depth of tidal current energy generating equipment on the D1 of depth of water direction, thus utilizing marine tidal-current energy to generate electricity more efficiently, greatly improving generated output.An installation shaft 4 arranges at least three bearings 5, realizes " multi-point constraint " to installation shaft 4.No matter how long installation shaft 4 is done, under the impact force that seawater is huge, at least three bearings 5 share stressed while, give the fixing of installation shaft 4 at least three and support, the length of installation shaft 4 is no longer restricted, depth of water direction D1 can installs more horizontal axis hydraulic turbine generator 3, significantly expand the scale of tidal current energy generating equipment, improve generated output, overcome ocean power generating device in prior art and cannot do dark technical barrier in ocean.
In the present embodiment, tidal current energy generating equipment also comprises underwater shaft system and rotates protective gear 7, and each underwater shaft system rotates protective gear 7 and comprises oiling agent storage box 71, at least six seal rings 72 and conduit 73.Oiling agent storage box 71 stores oiling agent 74, and oiling agent storage box 71 is positioned on water surface P.Every two seal rings 72 correspond to a bearing 5 and are sheathed in installation shaft 4, and every two seal rings 72 form lubricant cavity 75 with between corresponding bearing 5 and installation shaft 4.One end of conduit 73 is communicated with oiling agent storage box 71, and the other end is communicated with lubricant cavity 75.
In the present embodiment, the conduit 73 in each built-in module 100 and the quantity of oiling agent storage box 71 are two, and two conduits 73 are communicated with both sides and two oiling agent storage boxes 71 of lubricant cavity 75 respectively.By increasing the quantity of conduit 73 to improve the speed of filling oiling agent 74.But the utility model is not limited in any way this.In the present embodiment, conduit 73 can adopt stainless steel to make.
In the first embodiment, bearing 5 is sliding bearing, and each lubricant cavity 75 is formed by two seal rings 72 and bearing 5 and installation shaft 4.Specifically, the upper and lower surface of lubricant cavity 75 is made up of respectively two seal rings 72, and the internal surface of lubricant cavity 75 is the outer surface of the necked part of installation shaft 4, and the outer surface of lubricant cavity 75 is the internal surface of bearing 5.Lubricant cavity 75 is cross sections is rings, and longitudinal section is rectangular ring-shaped cylinder.Oiling agent 74 is filled in lubricant cavity 75 to form lubricating film thus to reduce friction.In the first embodiment, oiling agent 74 is not containing the pure seawater of the impurity such as silt.
Because the impact force of trend to installation shaft 4 is huge, seal ring 72 is subject to huge radial force for a long time, is easy to resiliently deformable occurs, thus causes no longer sealing between seal ring 72 and installation shaft 4, namely there is space between seal ring 72 and installation shaft 4.Be be arranged in lubricant cavity 75 because oiling agent 74 is original, after lubricant cavity 75 exists space, oiling agent 74 probably runs off, and meanwhile, the water of outside also can carry the impurity such as silt and pour in from space.
Below the underwater shaft system for marine tidal-current energy generating that introducing the present embodiment in detail provides rotates protective gear 7 and how to protect being positioned at undersurface installation shaft 4.
Because oiling agent storage box 71 is positioned on water surface P, and the attachment portion of horizontal axis hydraulic turbine generator 3 and installation shaft 4 is positioned under water surface P, there is height difference therebetween.According to the formula of liquid pressure, pressure and the degree of depth (height between pressure point to liquid level) proportional relation.Be positioned at the oiling agent 74 of lubricant cavity 75 owing to being carried by the conduit 73 being communicated with oiling agent storage box 71, when density is the same, lubricant cavity 75 is greater than the pressure of outside, same depth of water place certainly with the pressure of conduit 73 connectivity part.Meanwhile, because liquid can transmit pressure, the internal pressure that seal ring 72 sealing place is subject to is greater than the external pressure that seal ring 72 sealing place is subject to certainly.Therefore, lubricant cavity 75 is in " micro positive pressure " state all the time.
In other words; even if sealing cannot be realized between bearing 5 and installation shaft 4; namely there is space between seal ring 72 and installation shaft 4; oiling agent 74 also constantly can flow in lubricant cavity 75 under differential pressure action from oiling agent storage box 71; then flow out to seal ring 72 from space; water with silt outside being arranged in also can not flow into lubricant cavity 75 from space, thus really realizes the protective action to installation shaft 4.
In practical application, conduit 73 also comprises joint, and by joint, conduit 73 can realize multichannel arrangement, thus total road that the lubricant cavity 75 in three bearings 5 can share a conduit 73 is communicated with common oiling agent storage box 71.But the utility model is not limited in any way this.
In the present embodiment, whether the underwater shaft system for marine tidal-current energy generating rotates protective gear 7 and also comprises detection module 76, be arranged at oiling agent storage box 71 and reduce to detect oiling agent 74.In practical application, detect module 76 and can be infrared inductor, whether whether the height of detection oiling agent 74 in oiling agent storage box 71 reduces the section of sentencing oiling agent 74 is reduced.Detect module 76 and also can be gravity sensor, whether whether the quality of detection oiling agent 74 in oiling agent storage box 71 reduces the amount judging oiling agent 74 changes.The sealability that the minimizing of oiling agent 74 represents bearing 5 declines, thus reminds maintenance man's seal ring 72 aging or there occurs distortion needs and carry out keeping in repair and changing.Detect module 76 by arranging, maintenance man intuitively and in time can know the state of axle system, the especially using state of seal ring 72, and safeguards tidal current energy generating equipment in time.
In reality uses, the underwater shaft system for marine tidal-current energy generating rotates protective gear 7 can also comprise alarm module (not shown), and described alarm module connects described detection module 76.When detecting module 76 and detecting that oiling agent 74 reduces, alarm module gives the alarm.
The schematic diagram of a built-in module of the tidal current energy generating equipment provided according to the utility model second embodiment is provided.In the second embodiment, the 26S Proteasome Structure and Function of external frame 1, inner gimbal 2, horizontal axis hydraulic turbine generator 3, installation shaft 4, bearing 5 and driver element 6, all as in the first embodiment, similar elements all represents with identical label, does not repeat them here.Below be only explained with regard to difference.
In the present embodiment, four horizontal axis hydraulic turbine generators 3 are fixed in an installation shaft 4.Two of three bearings 5 are installed on the both sides up and down of horizontal axis hydraulic turbine generator 3 in same installation shaft 4, and another one is installed between every two horizontal axis hydraulic turbine generators 3.In other words, be one group with two horizontal axis hydraulic turbine generators 3, guarantee often to organize between horizontal axis hydraulic turbine generator 3 and be provided with bearing 5.Still multi-point constraint to installation shaft 4 and support can be realized by this set.
The plan view of the tidal current energy generating equipment provided according to the utility model the 3rd embodiment is provided.The plan view of the tidal current energy generating equipment provided according to the utility model the 3rd embodiment is provided.Figure 6 shows that the enlarged diagram of circle mark U in Fig. 5.The structural representation of the air guide sleeve provided according to the utility model the 3rd embodiment is provided.The plan view of the air guide sleeve provided according to the utility model the 3rd embodiment is provided.Please also refer to Fig. 4 to Fig. 8.
In the 3rd embodiment, the 26S Proteasome Structure and Function of inner gimbal 2, horizontal axis hydraulic turbine generator 3, installation shaft 4 and driver element 6, all as in the first embodiment, similar elements all represents with identical label, does not repeat them here.Below be only explained with regard to difference.
External frame 1 ' can be welded by Steel material.In the present embodiment, external frame 1 ' comprises outer sleeve 11 and fixing stake 12.Fixing stake 12 is formed by placement of concrete in outer sleeve 11.External frame 1 ' is fixed on seabed F by the mode of piling.
In the present embodiment, external frame 1 ' also has multiple reduction resistance to water-flow structure 13.Multiple reduction resistance to water-flow structures 13 are positioned at the side that meets water of many outer sleeves 11.Resistance to water-flow structure 13 is reduced in the side that meets water of outer sleeve 11 by arranging, substantially reduce the lifting surface area that outer sleeve 11 (just forming fixing stake 12 herein afterwards) bears water hammer, increase substantially the stability of the fixing stake 12 of follow-up formation simultaneously.As shown in Figure 1, the top and bottom that resistance to water-flow structure 13 is positioned at external frame 1 ' is reduced.In the present embodiment, reduce resistance to water-flow structure 13 and be formed in one with the body of external frame 1 '.
For in Fig. 3 from left several secondary series four outer sleeves 11, because outer sleeve 11 has lined up the row being parallel to water (flow) direction, the water flow impact pressure that the outer sleeve 11 being therefore positioned at downstream bears greatly can reduce after the stop of outer sleeve 11 being positioned at upstream.Find after experiment, reduce resistance to water-flow structure 13 if do not have, when water velocity is constant, the water flow impact pressure sum that four outer sleeves 11 bear is about 2.6 times of being exposed to the water flow impact pressure that the outer sleeve 11 in water bears.But, external frame 1 ' is provided with after reducing resistance to water-flow structure 13, the water flow impact pressure sum that four outer sleeves 11 bear be only that is exposed to the water flow impact pressure that the outer sleeve 11 in water bears 30%.
In the present embodiment, the cross section reducing resistance to water-flow structure 13 is triangle.But the utility model is not limited in any way the concrete shape and structure that reduce resistance to water-flow structure 13.In other embodiments, this reduction resistance to water-flow structure can be fabricated to streamlined.
In the present embodiment, tidal current energy generating equipment 200 comprises six built-in modules, and each built-in module has two horizontal axis hydraulic turbine generators 3 and three bearings 5 ' of an inner gimbal 2 and correspondence.But the utility model is not limited in any way this.Horizontal axis hydraulic turbine generator 3 can be increased in horizontal (transverse direction as shown in Figure 4 according to the power generation needs of tidal current energy generating equipment; namely perpendicular to the substantially horizontal of water (flow) direction) and longitudinal (longitudinal direction as shown in Figure 4; namely perpendicular to the depth of water direction of horizontal plane) on quantity, thus realize the large-scale of tidal generating set 200.
In the 3rd embodiment, bearing 5 ' comprises inner ring 51 ', outer ring 52 ' and rolling element 53 '.Inner ring 51 ' and installation shaft 4 match to merge and rotate together with installation shaft 4, match with bearing support 76 ' and play a supportive role in outer ring 52 '.Sliding friction in sliding bearing between installation shaft and bearing has been become the rolling friction being positioned at rolling element 53 ' between inner ring 51 ' and outer ring 52 ' by bearing 5 '.
In the present embodiment; underwater shaft system rotates protective gear 7 ' and also comprises at least three bearing supports 76 '; lubricant cavity 75 ' is formed by two seal rings 72 ', bearing 5 ', bearing support 76 ' and installation shaft 4, and the rolling element 53 ' of bearing 5 ' is positioned at lubricant cavity 75 '.Specifically, the bearing support 76 ' of the present embodiment comprises two end caps 761 '.End cap 761 ' not only plays the axially locating effect of bearing 5 ', also plays the effect of anti-impurity and sealing together with seal ring 72 '.Upper and lower two end caps 761 ', seal ring 72 ', form Seal cage between installation shaft 4 and the bearing support 76 ' of circumference, bearing 5 ' is positioned at cavity.
In the 3rd embodiment, oiling agent is lubricant oil.A conduit 73 ' is communicated in upper end cap 761 ' place, and another root conduit 73 ' is communicated in lower end cap 761 ' place.By this set, the rolling element 53 ' of bearing 5 ' is infiltrated in lubricant oil.
Although the density of lubricant oil is slightly less than the density of water, and pressure and density, the degree of depth are all proportional, but because the height difference of the oiling agent storage box 71 ' on the water surface and lubricant cavity 75 ' is under water larger, through calculating, on the whole, lubricant cavity 75 ' is still in " micro positive pressure " state.In other words; even if the seal ring 72 ' being positioned at below cannot realize sealing; oiling agent also can constantly flow in lubricant cavity 75 ' under differential pressure action from oiling agent storage box 71 '; then flow out to seal ring 72 ' from space; water with silt outside being arranged in also can not flow into lubricant cavity 75 ' from space, thus really realizes the protective action of shaft.
In the present embodiment, tidal current energy generating equipment 200 also comprises at least four air guide sleeves 8, and each air guide sleeve 8 corresponds to each horizontal axis hydraulic turbine generator 3 and arranges.Each air guide sleeve 8 has two water guide parts 81 and an intermediate portion 82.Intermediate portion 82 is between two water guide parts 81.Each water guide part 81 is rectangle away from the cross section 811 of one end of intermediate portion 82.Each water guide part 81 connects the cross section 812 of one end of intermediate portion 82 for circular.The cross section 821 of intermediate portion 82 is circular.Cross section 811,812 and 821 is all perpendicular to horizontal plane and perpendicular to water (flow) direction D2, and the area of circular cross section 812 and 821 is less than the area of rectangular cross section 811.
Specifically, intermediate portion 82 is columniform conduit, each water guide part 81 for one end be that to be then transitioned into the other end be circular stereochemical structure to rectangle.The area of the circular cross section 812 of water guide part 81 can be close to the area of the circular cross section 821 equaling intermediate portion 82.The area of the circular cross section 812 of water guide part 81 is less than the area of the rectangular cross section 811 of water guide part 81.In practical application, horizontal axis hydraulic turbine generator 3 is just in time positioned at columniform intermediate portion 82.
By one end of water guide part 81 is set to rectangle, the seamless link with inner gimbal 2 connecting end surface can be realized.The air guide sleeve used in existing tidal current energy generating equipment, the cross section of its side that meets water is circle.Because available frame is rectangle, space will be produced between circle and rectangle in installation process.If this space not thing stops, when trend is impacted to water turbine, quite a few current can pour in water turbine from this space, and even the back side of impeller blades, greatly reduces generated output.If intercepted by this space flat board, then current can directly rush at this flat board, form huge stress, easily damage the structure of whole framework.Particularly after this flat board stops, the water (flow) direction even current that can change are run helter-skelter, and seriously reduce marine tidal-current energy utilization ratio, and then reduce generated output.
By circle less from rectangular transition to area, reduce flow channel, current all concentrated guiding horizontal axle hydraulic turbine generator 3, make the impeller 31 of horizontal axis hydraulic turbine generator 3 stressed larger, rotating speed is faster, thus improves generating efficiency.Especially, so no matter air guide sleeve 8 two ends in the present embodiment are rectangle but not one end is rectangle, flood tide or ebb tide, and this air guide sleeve 8 can realize guide functions.
Air guide sleeve 8 can be fixed on external frame 1 ' or inner gimbal 2.In the present embodiment, air guide sleeve 8 is all fixed on inner gimbal 2.But the utility model is not limited in any way this.In practical application, air guide sleeve 8 detachable is installed, and intermediate portion 82 can be fixed on inner gimbal 2, and two water guide parts 81 can be fixed on external frame 1 '.In as installed, intermediate portion 82 just can fix on the water surface when assembling built-in module, and water guide part 81 can directly fix on external frame 1 ', when then being called in by built-in module in external frame 1 ', namely completes the assembling of water guide cover 8.
In sum; the tidal current energy generating equipment that the utility model provides is by arranging separable inner gimbal and external frame; make electricity generating device can carry out modularization assembling and replacement on the water surface; significantly reduce maintenance and mounting cost, overcome Conventional marine energy electricity generating device cannot commercialization, large-scale a difficult problem.And, at least two horizontal axis hydraulic turbine generators are set by coaxial on the mounting shaft and at least three bearings are set, " multi-point constraint " is realized to installation shaft, the scale of tidal current energy generating equipment not only can laterally also can longitudinally (depth of water direction perpendicular to horizontal plane) be expanded in (substantially horizontals perpendicular to current) expansion, increased substantially generated output, overcome existing ocean power generating device cannot " do large ", " doing dark " a difficult problem.By arranging installation shaft, innovatively by change whole horizontal axis generator towards and non-individual changes the meet water load of mode to generator at angle of blade and regulates, make no matter the much generators of water velocity can guarantee normal power generation in safe load always, drastically increase generating efficiency.The more important thing is, by arranging rotating installation shaft, such that no matter current whichaway flows into, the impeller of horizontal axis hydraulic turbine generator all the time towards current, thus can guarantee maximum generated output.Be particularly useful for utilizing tidal energy to generate electricity.
In addition, the underwater shaft system that the utility model provides rotates protective gear energy available protecting introduced contaminants, and the silt especially in water enters bearing, thus the normal work of available protecting bearing.The tidal current energy generating equipment that the utility model provides, by adopting underwater shaft system to rotate protective gear, while prolongation bearing working life, considerably reducing maintenance frequency and maintenance cost, effectively ensure that generating efficiency is unaffected simultaneously.In addition, the bearing in the tidal current energy generating equipment that the utility model provides can adopt rolling bearing, overcomes underwater shaft system in prior art and can only use the technology barriers of the sliding bearing of water lubrication.
Further, by arranging detection module, can know whether the sealing of bearing reduces in time and intuitively, thus effectively guide maintenance personnel when where is keeped in repair, improve promptness and the reliability of maintenance.In addition, because framework is separable external frame and inner gimbal, protective gear can be rotated to underwater shaft system quickly and easily and repair or replace, greatly reduce maintenance cost.
By arranging air guide sleeve, current are all concentrated guiding horizontal axle hydraulic turbine generator, make the impeller of horizontal axis hydraulic turbine generator stressed larger, rotating speed is faster, thus improves generating efficiency.The air guide sleeve provided in the utility model embodiment, two ends are rectangle, and centre is circular, no matter flood tide or ebb tide can play guide functions all the time, and have the air guide sleeve water conservancy diversion better effects if of this specified structure.
Although the utility model discloses as above by preferred embodiment; but and be not used to limit the utility model; anyly know this those skilled in the art; not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.
Claims (8)
1. a tidal current energy generating equipment, is characterized in that, comprising:
External frame;
At least two inner gimbals, are arranged in external frame separably;
At least two installation shaft, are arranged at each inner gimbal respectively rotationally, and the axial direction of described at least two installation shaft is perpendicular to horizontal plane;
Driver element, described in connection, at least two installation shaft are rotated to drive described installation shaft;
At least four horizontal axis hydraulic turbine generators, every two horizontal axis hydraulic turbine generators to be fixed in an installation shaft and to be positioned at same inner gimbal, described at least four horizontal axis hydraulic turbine generators with the rotation of installation shaft change towards;
At least six bearings, the sheathed installation shaft of every three bearings, three bearings be located in an installation shaft lay respectively at both sides and the centre of two horizontal axis hydraulic turbine generators.
2. tidal current energy generating equipment according to claim 1, it is characterized in that, described tidal current energy generating equipment also comprises at least four air guide sleeves, each air guide sleeve corresponds to each horizontal axis hydraulic turbine generator and arranges, described at least four air guide sleeves are fixed on external frame or inner gimbal, each air guide sleeve has two water guide parts and an intermediate portion, described intermediate portion is between two water guide sectors are divided, each water guide part is rectangle away from the cross section of one end of intermediate portion, the cross section that each water guide part connects one end of intermediate portion is circular, the cross section of described intermediate portion is circular, described cross-section normal is in horizontal plane and perpendicular to water (flow) direction, the area of described circular cross section is less than the area of rectangular cross section.
3. tidal current energy generating equipment according to claim 1, is characterized in that, described tidal current energy generating equipment also comprises underwater shaft system and rotates protective gear, and each underwater shaft system rotates protective gear and comprises:
Oiling agent storage box, stores oiling agent, and described oiling agent storage box is positioned on the water surface;
At least six seal rings, every two seal rings correspond to a bearing and are sheathed in described installation shaft, and every two seal rings form lubricant cavity with between corresponding bearing and installation shaft;
Conduit, one end of described conduit is communicated with oiling agent storage box, and the other end is communicated with lubricant cavity.
4. tidal current energy generating equipment according to claim 3, is characterized in that, whether described underwater shaft system rotates protective gear and also comprises detection module, be arranged at described oiling agent storage box and reduce to detect oiling agent.
5. tidal current energy generating equipment according to claim 3, is characterized in that, described bearing is sliding bearing, and each lubricant cavity is formed by two seal rings and bearing and installation shaft.
6. tidal current energy generating equipment according to claim 3; it is characterized in that; described bearing is rolling bearing, and described underwater shaft system rotates protective gear and also comprises at least three bearing supports, and each lubricant cavity is formed by two seal rings, bearing, bearing support and installation shaft.
7. tidal current energy generating equipment according to claim 1, is characterized in that, described external frame has multiple fixing stake, and described external frame is fixed on seabed by the mode of piling.
8. tidal current energy generating equipment according to claim 1, is characterized in that, described external frame has multiple reduction resistance to water-flow structure.
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| CN201520458418.7U CN204877775U (en) | 2015-06-29 | 2015-06-29 | Trend can power generation facility |
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| CN201520458418.7U CN204877775U (en) | 2015-06-29 | 2015-06-29 | Trend can power generation facility |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673313A (en) * | 2016-01-12 | 2016-06-15 | 河海大学 | Micro-water-head water turbine with lifting and steering functions and control method |
| CN106401854A (en) * | 2016-11-23 | 2017-02-15 | 郑州天舜电子技术有限公司 | Power generation device applied to oceans |
| WO2017181433A1 (en) * | 2016-04-22 | 2017-10-26 | 杭州林东新能源科技股份有限公司 | Tidal stream generator and stream guiding cover thereof |
| CN108779756A (en) * | 2016-03-11 | 2018-11-09 | 潮汐科技公司 | The method that the power generator of power is provided and this device is provided by tidal water |
| CN109113921A (en) * | 2018-08-16 | 2019-01-01 | 派腾奥普科技服务（北京）有限公司 | Lightweight tide energy composite generating set |
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2015
- 2015-06-29 CN CN201520458418.7U patent/CN204877775U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673313A (en) * | 2016-01-12 | 2016-06-15 | 河海大学 | Micro-water-head water turbine with lifting and steering functions and control method |
| CN105673313B (en) * | 2016-01-12 | 2018-04-03 | 河海大学 | The micro head hydraulic turbine and control method with lifting tuning function |
| CN108779756A (en) * | 2016-03-11 | 2018-11-09 | 潮汐科技公司 | The method that the power generator of power is provided and this device is provided by tidal water |
| WO2017181433A1 (en) * | 2016-04-22 | 2017-10-26 | 杭州林东新能源科技股份有限公司 | Tidal stream generator and stream guiding cover thereof |
| CN106401854A (en) * | 2016-11-23 | 2017-02-15 | 郑州天舜电子技术有限公司 | Power generation device applied to oceans |
| CN109113921A (en) * | 2018-08-16 | 2019-01-01 | 派腾奥普科技服务（北京）有限公司 | Lightweight tide energy composite generating set |
| CN109113921B (en) * | 2018-08-16 | 2020-04-24 | 浙江威爱教育科技有限公司 | Light tidal energy comprehensive power generation device |
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