CN105781864A - Tidal current energy power generation device and underwater sealing protective device thereof - Google Patents

Tidal current energy power generation device and underwater sealing protective device thereof Download PDF

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Publication number
CN105781864A
CN105781864A CN201610309017.4A CN201610309017A CN105781864A CN 105781864 A CN105781864 A CN 105781864A CN 201610309017 A CN201610309017 A CN 201610309017A CN 105781864 A CN105781864 A CN 105781864A
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China
Prior art keywords
generating
current energy
hydrogenerator
tidal
rotating shaft
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CN201610309017.4A
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Chinese (zh)
Inventor
林东
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Hangzhou Lin Dong New Energy Science And Technology Co Ltd
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Hangzhou Lin Dong New Energy Science And Technology Co Ltd
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Priority to CN201610309017.4A priority Critical patent/CN105781864A/en
Publication of CN105781864A publication Critical patent/CN105781864A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12Adaptations 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
    • F03B13/26Adaptations 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 using tide energy
    • F03B13/264Adaptations 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 using tide energy using the horizontal flow of water resulting from tide movement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/006Sealing arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B15/00Controlling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00Application
    • F05B2220/70Application in combination with
    • F05B2220/706Application in combination with an electrical generator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/60Control system actuates through
    • F05B2270/602Control system actuates through electrical actuators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

The invention provides a tidal current energy power generation device and an underwater sealing protective device thereof. The underwater sealing protective device of a tidal current energy power generation unit is used for protecting the power generation unit located in water. The underwater sealing protective device of the tidal current energy power generation unit at least comprises an air pump and at least one pressurization pipe. One end of the pressurization pipe communicates with the air pump, and the other end of the pressurization pump communicates with the power generation unit. The air pump is used for pressurizing the power generation unit independently so that the pressure in the power generation unit can be controlled to be higher than or equal to the outside pressure, accordingly water flow in the outside can be prevented from entering the power generation unit, and the sealing performance of the power generation unit is guaranteed.

Description

Tidal current energy generating equipment and water-bed seal protecting device thereof
Technical field
The present invention relates to a kind of TRT, particularly relate to a kind of tidal current energy generating equipment and water-bed seal protecting device thereof.
Background technology
Ocean energy (comprises tide energy, marine tidal-current energy, wave energy, energy by ocean current) and refers to the energy of marine stream, as regenerative resource, and rich reserves, widely distributed, there is fabulous DEVELOPMENT PROSPECT and value.The Land use systems of ocean energy is generating mainly, and its operation principle is similar with wind-power electricity generation, namely by energy conversion device, converts the mechanical energy of sea water to electric energy.Specifically, the first sea washes hydraulic turbine, the energy of current is converted to the mechanical energy of rotation by the hydraulic turbine, and then the hydraulic turbine generates electricity through machine driven system drive electrical generators, is ultimately converted to electric energy.
Energy worsening shortages now, greenhouse effect is day by day serious, the low carbonization of energy needs, so wind energy, the clean energy resource such as ocean energy is the developing direction of future source of energy.But the 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, it does not have general and ripe equipment.Existing a few devices there is also inefficiency, and equipment can not the problem of large-scale.
Owing to marine environment is complicated, in water, resistance is big, and the installation of traditional ocean power generating device all must carry out in the sea, and degree of difficulty is high, and expense is huge.Further, since TRT Long Term Contact sea water, long-term at sea water is corroded and under enormous impact power, and ocean power generating device will be periodically subject to maintenance or change after using a period of time.But the maintenance of traditional ocean power generating device and replacing also all carry out in the sea, degree of difficulty is high, and cost is huge.Even, because the damage of members, causing scrapping of whole ocean power generating device, this is one of the 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 trunnion axis hydrogenerator, due to its all devices (including blade and electromotor) all under water, therefore the maintenance of trunnion axis hydrogenerator is more difficult, more costly.Therefore, even if the generating efficiency of trunnion axis hydrogenerator is higher than vertical axis hydrogenerator, but trunnion axis hydrogenerator still cannot commercialization.But, the technical staff in current power generation with marine energy field have ignored the improvement to installation and maintenance mode.
Further, along with the increase of the degree of depth in water, pressure is gradually increased.Pressure outside generating set can be far longer than the pressure of inside, and therefore external water stream is easy to penetrate into generating set inside thus damaging generating set.For compressive property and the sealing property of amplification generator group, the intensity of generator unit shell and the sealing of structure are had higher requirement, thus causing the soaring of production cost;On the other hand, in order to increase compressive property and the sealing property of generating set, the volume of generating set needs to reduce further so that all elements (gearbox, actuated element, electromotor etc.) in generating set are all closely arranged, which increase the friction between element, greatly have impact on the efficiency of generating set.In order to avoid these problems, existing tidal current energy generating equipment all only arranges a hydrogenerator to avoid the problem that depth of water place pressure is too big being perpendicular to horizontal plane direction.But, so the marine tidal-current energy of depths in water cannot be made full use of.
On the other hand, owing to marine tidal-current energy is that the trend utilizing ocean generates electricity.Along with flood tide and ebb tide, the direction of trend can change.Traditional most of trunnion axis hydrogenerator all cannot rotate, and causes that marine tidal-current energy generator generates electricity only with flood tide or ebb tide, and generating efficiency is extremely low.Existing technical staff, in order to make full use of flood tide and the energy of ebb tide generation, selects to install two set electricity generation systems.The impeller of a set of electricity generation system is towards flood tide direction, and the impeller of another set of electricity generation system is towards ebb tide direction.Although the energy that the flood tide of seeming and ebb tide produce all fully is utilized, but when flood tide or ebb tide, have a set of electricity generation system all the time and leave unused.Increasing a set of electricity generation system makes production cost double, and the raising of the electric energy power produced is far away from the increase of cost, this greatly limits the popularization of tidal current energy generating equipment and utilization.
It should be noted that the strength of current of flood tide and ebb tide non-constant.When installing TRT, once electromotor is selected, its load capacity determines that.But, the speed of trend is also non-constant, thus results in generated energy and non-constant.No matter existing tidal current energy generating equipment, in order to save cost and be subject to technical limitation, is trunnion axis hydrogenerator or the vertical axis hydrogenerator generation load that can only be carried on below certain water velocity.Once water velocity increases, generated energy overloads, and electromotor can work overloadingly and be easy to damage.Therefore, in order to extend the working life of electromotor, traditional tidal current energy generating equipment exceedes certain speed once trend and just thoroughly cuts off current so that electromotor quits work, and considerably reduces generating efficiency.
Existing a kind of tidal current energy generating equipment uses for reference the design of wind-driven generator, regulates the load of TRT by becoming the mode of oar.When water velocity is bigger, the blade angle of attack is made to reduce by regulating device;When water velocity is less, the blade angle of attack is made to increase by regulating device.But, there is very big drawback in this design.Being different from the use environment of wind-driven generator, the trunnion axis hydraulic turbine is to use in water, and the resistance being subject to is far longer than the resistance that wind-driven generator is subject to.Further, being the blade angle of the trunnion axis hydraulic turbine due to what regulate, rotating mechanism is to be positioned in water all over, will realize the rotation of blade angle and be accomplished by installation tightness degree between the design each parts of blade accurately.If connecting very tight, frictional force is too big, then be difficult to adjust the upstream face angle of blade, causes that regulating device cannot play effect of adjustment.In this case TRT cannot improve efficiency when current are too little, also cannot really protect electromotor when current are too big.If connecting too loose, frictional force is too little, although can easily regulate, but 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 is greatly improved, the huge increasing of cost.And the hydraulic turbine has several blade corresponding will install several rotating mechanisms and controlling organization, and its cost and technical difficulty sharply increase.
Summary of the invention
The present invention is in order to overcome at least one deficiency of the prior art, it is provided that a kind of tidal current energy generating equipment and water-bed seal protecting device thereof.
In order to realize a purpose of the present invention; the present invention provides a kind of marine tidal-current energy generator group bottom seal protecting device; for protecting the generating set being positioned in water; it is characterized in that; marine tidal-current energy generator group bottom seal protecting device includes at least one air pump and at least one pressure inlet; one end connection air pump of pressure inlet, other end connection generating set.
According to one embodiment of the invention, marine tidal-current energy generator group bottom seal protecting device also includes at least one support, and the other end of pressure inlet is first arranged in support and connects generating set again.
According to one embodiment of the invention, marine tidal-current energy generator group bottom seal protecting device also includes rotating shaft, and the axis direction of rotating shaft is perpendicular to horizontal plane, and the other end of pressure inlet is first arranged in rotating shaft and connects generating set again.
In order to realize another object of the present invention, the present invention also provides for a kind of tidal current energy generating equipment, including outside framework, at least one inner frame, at least one hydrogenerator, at least one cable and marine tidal-current energy generator group bottom seal protecting device.At least one inner frame is arranged in outside framework separably.At least one hydrogenerator includes at least two blade and a generating set.One end of cable is electrically connected generating set.Marine tidal-current energy generator group bottom seal protecting device includes at least one air pump and at least one pressure inlet, one end connection air pump of pressure inlet, other end connection generating set.
According to one embodiment of the invention; marine tidal-current energy generator group bottom seal protecting device also includes at least one support; support is fixed on inner frame, and the other end of pressure inlet is first arranged in support and connects generating set again, and the end of cable is arranged in support and connects generating set again.
According to one embodiment of the invention; marine tidal-current energy generator group bottom seal protecting device also includes at least one rotating shaft; inner frame is fixed in rotating shaft; hydrogenerator is fixed on rotating shaft; the axis direction of rotating shaft is perpendicular to horizontal plane; the other end of pressure inlet is first arranged in rotating shaft and connects generating set again, and the end of cable is arranged in rotating shaft and connects generating set again.
According to one embodiment of the invention, at least one driver element, it is positioned on the water surface, connection rotating shaft rotates with drive shaft.
According to one embodiment of the invention, marine tidal-current energy generator group bottom seal protecting device also includes at least one flexible pipe, one end connection air pump of flexible pipe, other end connection pressure inlet.
According to one embodiment of the invention, at least two hydrogenerator is positioned at same inner frame and arranges along the direction being perpendicular to horizontal plane, the quantity of air pump and pressure inlet corresponds respectively to the quantity of hydrogenerator, the generating set of each pressure inlet one air pump of connection and a hydrogenerator.
In sum; tidal current energy generating equipment provided by the invention is by arranging separable inner frame and outside framework; make TRT can carry out modularization assembling and replacement on the water surface; be greatly lowered maintenance and mounting cost, overcome tradition tidal current energy generating equipment cannot commercialization, large-scale a difficult problem.By arranging air pump and pressure inlet, guarantee that the internal pressure of each hydrogenerator on depth of water direction is more than or equal to external pressure, ensure generating set sealing property simultaneously effective solve existing generating set cannot in water depths work or the low problem of work efficiency, and make full use of the marine tidal-current energy on depth of water direction, improve generating efficiency, overcome the difficult problem that existing tidal current energy generating equipment cannot " do deep ".
By arranging rotating shaft or support, both can reduce the current directly impact and the external pressure impact on pressure inlet on cable and pressure inlet, also function to fixing cable and the effect of pressure inlet trend.
Additionally, by arranging rotating shaft, innovatively by change whole trunnion axis electromotor towards and non-individual changes the meet water mode at angle of blade and the load of electromotor is adjusted, make the no matter much electromotors of water velocity can ensure that always can in safe load normal power generation, drastically increase generating efficiency.By arranging rotating rotating shaft so that no matter flood tide or ebb tide, the blade of hydrogenerator can all the time towards current, so that it is guaranteed that maximum generated output.
And, arrangement at least two hydrogenerator, at least three hydrogenerator of also arranging on the direction be parallel to horizontal plane on the direction be perpendicular to horizontal plane so that hydrogenerator realization matrixization is arranged, make full use of the marine tidal-current energy that whole marine site is horizontal and vertical, be greatly improved generating efficiency.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, it is described in detail below.
Accompanying drawing explanation
Fig. 1 show the assembling schematic diagram of the tidal current energy generating equipment provided according to a first embodiment of the present invention.
Fig. 2 show the side view of the tidal current energy generating equipment provided according to a first embodiment of the present invention.
Fig. 3 show the cross-sectional view of the support provided according to a first embodiment of the present invention.
Fig. 4 show the side view of the tidal current energy generating equipment provided according to a second embodiment of the present invention.
Fig. 5 show the top view of the tidal current energy generating equipment provided according to a second embodiment of the present invention.
Detailed description of the invention
The tidal current energy generating equipment provided in first embodiment of the invention includes outside framework 1, at least one inner frame 2, at least one hydrogenerator 3, at least one cable 4 and marine tidal-current energy generator group bottom seal protecting device 5.
At least one inner frame 2 is arranged in outside framework 1 separably.Outside framework 1 can be welded by Steel material, is fixed on water-bed F.Can being provided with snap fit (not shown) on inner frame 2, outside framework 1 can be provided with draw-in groove (not shown), inner frame 2 is embedded in outside framework 1 by snap fit and being mutually clamped of draw-in groove.But, the fixed form between inner frame 2 and outside framework 1 is not limited in any way by the present invention.The particular number of inner frame 2 is not also limited in any way by the present invention.
In the present invention, an inner frame 2 and at least one hydrogenerator 3 are collectively forming a built-in module 100.In practical application, can being first fixed in an inner frame 2 by least one hydrogenerator 3, the inner frame 2 then at least one so assembled is fixed in outside framework 1, thus the modularity realizing tidal current energy generating equipment is installed.Specifically, the assembling of built-in module 100 can on the coast or offshore platform carry out, then hang in built-in module 100 from top to bottom to be placed in marine outside framework 1 and be fixed with outside framework 1, so realize the installation exercise on sea, it is greatly simplified installation procedure, reduce the set-up time, reduce installation difficulty in ocean.
Preferably, the quantity of inner frame 2 is more than or equal to three.In practical application, the quantity of inner frame 2 can up to 12 or 14.As shown in Figure 1; multiple inner frames 2 are arranged along the direction being parallel to horizontal plane P; it is achieved thereby that tidal current energy generating equipment scale is extending transversely; it is greatly improved the utilization rate of marine tidal-current energy, overcomes existing tidal current energy generating equipment and mistakenly research direction is placed on the single hydraulic turbine does big and the drawback of scale cannot be realized.
Hydrogenerator 3 includes at least two blade 31 and a generating set 32.Hydrogenerator 3 in the present embodiment is trunnion axis hydrogenerator.But this is not limited in any way by the present invention.In other embodiments, hydrogenerator can not have the trunnion axis of entity, as long as its generating set is positioned at hydrogenerator under water, is within the scope of the hydrogenerator of the present patent application indication.The quantity of the blade 31 of hydrogenerator 3 is not also done any restriction by the present invention, and each hydrogenerator 3 can have the blades such as 2,3 or 4.
Owing to blade 31 and the generating set 32 of hydrogenerator 3 are whole under water, therefore, if hydrogenerator 3 breaks down, needs are keeped in repair by traditional tidal current energy generating equipment in the sea.So keep in repair extremely difficult and expense is huge.But, built-in module 100 can directly be repaired or replaced by the tidal current energy generating equipment of the present embodiment from marine taking-up, realize quick-replaceable and maintenance on the sea of tidal current energy generating equipment, greatly reduce maintenance cost so that the commercialization of tidal current energy generating equipment is achieved.
One end 41 of cable 4 is electrically connected generating set 32.The electric energy that generating set 32 produces is transferred on the bank by cable 4, and the other end of cable 4 connects electric control appliance on the bank.
Marine tidal-current energy generator group bottom seal protecting device 5 includes at least one air pump 51 and at least one pressure inlet 52, and one end 521 of pressure inlet 52 connects air pump 51, and the other end 522 connects generating set 32.Owing to air pump 51 is connected with generating set 32, air pump 51 can control the pressure increasing or reducing in generating set 32.
At least two hydrogenerator 3 is positioned at same inner frame 2 and arranges along the direction D1 being perpendicular to horizontal plane P.As viewed from direction shown in Fig. 1; at least two hydrogenerator 3 is longitudinal arrangement; it is achieved thereby that tidal current energy generating equipment scale is along the Longitudinal Extension of ocean depth, it is greatly improved generated output, further overcomes the problem that existing tradition tidal current energy generating equipment cannot realize scale.
In the present embodiment, the quantity being positioned at same inner frame 2 hydrogenerator 3 is three, but this is not limited in any way by the present invention.Water-bed F is generally uneven.Due to the existence of rock etc., even if at a distance of the place less than ten meters, the difference of height on water-bed F surface is from also can be very big.Tidal current energy generating equipment of the present invention can make full use of the energy in depth of water direction, it is possible to according to the quantity of hydrogenerator 3 on the flexible adjustment direction D1 of distance between water-bed and the water surface.For example, in water-bed place higher for F, it is possible to only arrange two hydrogenerators 3, in water-bed place relatively low for F, it is possible to arrange four hydrogenerators 3.In other words, in each inner frame 2, the quantity of hydrogenerator 3 is not required to equal.
The quantity of air pump 51 and pressure inlet 52 corresponds respectively to the quantity of hydrogenerator 3.In the present embodiment, it is provided with 3, three air pumps 51 of three hydrogenerators and three pressure inlets 52 corresponding to each inner frame 2.Each pressure inlet 52 connects the generating set 32 of an air pump 51 and a hydrogenerator 3.The electric energy that three generating sets 32 produce is transferred to electric control appliance on the bank by three cables 4 respectively.
It is known that the pressure that material is subject in water is directly proportional with this material degree of depth in water.Three hydrogenerators 3 are owing to being arrange along the direction (namely along depth of water direction D1) being perpendicular to horizontal plane P, and three hydrogenerator 3 pressure experienced certainly will be different.Generating set 32 is individually pressurizeed by each air pump 51, thus the pressure controlled in each generating set 32 is more than or equal to outside pressure, then only can stop that the current of outside enter in generating set 32 by existing sealing structure.So both need not change the structure of generating set 32; the volume of generating set 32 need not be reduced again; thus effectively realizing sealing protection to generating set 32; solve existing generating set cannot in water depths work or the low problem of work efficiency; and make full use of the marine tidal-current energy on depth of water direction; improve generating efficiency, overcome the difficult problem that existing tidal current energy generating equipment cannot " do deep ".
In the present embodiment; marine tidal-current energy generator group bottom seal protecting device 5 also includes at least one support 53; support 53 is fixed on inner frame 2; the other end 522 of pressure inlet 52 is first arranged in support 53 and connects described generating set 32 again, and the described end 41 of cable 4 is arranged in support 53 and connects generating set 32 again.But, this is not construed as limiting by the present invention.In other embodiments, cable 4 and pressure inlet 52 can pass through different supports 53 and carry out " cabling " respectively.In practical application, support 53 is alternatively a part for inner frame 2, and hydrogenerator 3 is fixed on inner frame 2 by support 53.Can be disposed entirely within the support 53 of inner hollow by " cabling " part in water of this set, cable 4 and pressure inlet 52, so reduce the current directly impact to cable 4 and pressure inlet 52, the effect of also function to arrange cable 4 and pressure inlet 52.It addition, be located in support 53 by pressure inlet 52, also avoid extraneous hydraulic pressure directly affecting pressure inlet 52.
As shown in Figure 4 and Figure 5, the outside framework 1 of tidal current energy generating equipment that second embodiment provides, at least one inner frame 2, at least one hydrogenerator 3, at least one cable 4, air pump 51 are identical with first embodiment with pressure inlet 52, similar elements adopts identical label, is described by as far as difference below.
In the present embodiment; marine tidal-current energy generator group bottom seal protecting device also includes at least one rotating shaft 53 '; inner frame 2 is fixed in rotating shaft 53 '; hydrogenerator 3 is fixed on rotating shaft 53 '; the axis direction of rotating shaft 53 ' is perpendicular to horizontal plane; the other end 522 of pressure inlet 52 is first arranged in rotating shaft 53 ' and connects described generating set 32 again, and the described end 41 of cable 4 is arranged in rotating shaft 53 ' and connects generating set 32 again.
Driver element 6 connection rotating shaft 53 ' rotates with drive shaft 53 '.In the second embodiment, every three hydrogenerators being installed in same rotating shaft 53 ' 3 are synchronously performed rotation.Owing to the water (flow) direction of flood tide and ebb tide is contrary, no matter current whichaway flows into, and by the blade 31 rotating control hydrogenerator 3 of rotating shaft 53 ' all the time towards current, thus improving the utilization rate of marine tidal-current energy, improves generating efficiency.
In the present invention, driver element 6 is on the water surface.In prior art, minority hydrogenerator can realize changed course, but driver element is all in below the water surface, and what have even becomes one with generating set.An entirety is formed after being all integrated in blade due to control system of the prior art, drive system, drive system, converter system and electricity generation system, cause that the volume of the blades part of existing hydrogenerator is very big, greatly reduce the usefulness of electronic devices and components.And drive system includes motor and is very easy to damage, it is often necessary to maintenance, these elements are arranged on underwater will increase considerably maintenance difficulty and cost.But the driver element in the present invention 6 is in more than the water surface but not underwater, thoroughly solve the problems referred to above, and can significantly reducing the volume of hydrogenerator blades part, thus improving the usefulness of electronic devices and components, being finally reached the purpose improving generating efficiency.
In the present embodiment, the quantity of driver element 6 is corresponding to the quantity of rotating shaft 53 '.But, this is not done any restriction by the present invention.In other embodiments, it is possible to by drive mechanisms such as gears, it is achieved the control to two rotating shafts 53 ' of driver element 6.Each driver element 6 can include motor and drive mechanism, one end of drive mechanism connection rotating shaft 53 ', and motor is rotated by drive mechanism drive shaft 53 '.But, this is not limited in any way by the present invention.In other embodiments, driver element 6 can include motor and reductor.Owing to existing motor speed is all very fast, it is substantially reduced by rotating speed after reductor, therefore can effectively and be accurately controlled rotating speed and the rotation amplitude of rotating shaft 53 '.
In practical application, when current flow to tidal current energy generating equipment along the water (flow) direction D shown in Fig. 5, driver element 6 is inoperative.Now, the blade 31 of hydrogenerator 3 is towards current.When current flow to tidal current energy generating equipment along water (flow) direction D opposite direction (as viewed from for from top to bottom in Fig. 5), driver element 6 drive shaft 53 ' rotates, thus driving hydrogenerator 3 to revolve turnback, make blade 31 from changing into upward down, to ensure that the blade 31 of hydrogenerator 3 is all the time towards current.This kind of situation is particularly suited for utilizing tidal power, it is ensured that maximum generated output.
Especially, in practical application, the water (flow) direction of flood tide and ebb tide is not substantially parallel, and is also not necessarily perpendicular to the upstream face of hydrogenerator 3.No matter current pour in hydrogenerator 3 from which direction, and the TRT of the present invention can pass through rotating shaft 53 ' control hydrogenerator 3 and change towards so that hydrogenerator 3 is all the time just to current, thus farthest utilizing marine tidal-current energy, improves generated output.
And, when the normal speed that actual water velocity is corresponding higher than the peak load that hydrogenerator 3 can bear, now only need to rotate control hydrogenerator 3 by rotating shaft 53 ' makes it rotate deviation one angle of water (flow) direction, then can effectively reduce the load of hydrogenerator 3, while guaranteeing that hydrogenerator 3 will not be damaged because of over loading, guarantee hydrogenerator 3 still normal operation, export generating sustainedly and stably.Overcoming when water velocity is excessive in Conventional marine energy TRT, electromotor is in order to avoid burning with regard to out-of-work drawback, simultaneously without carrying out becoming oar adjustment so that the Load Regulation of electromotor is simpler effectively.When the normal speed that actual water velocity is corresponding less than the peak load that hydrogenerator 3 can bear, now only need to rotate control hydrogenerator 3 by rotating shaft 53 ' makes it rotate just to water (flow) direction (namely the upstream face of blade is perpendicular to water (flow) direction), then can farthest utilize current to generate electricity, improve generated output.
In the second embodiment, rotating shaft 53 ' had both been played and had been controlled the effect that hydrogenerator 3 rotates, and played again the effect of protection and positioning cable 4 and pressure inlet 52.Owing to hydrogenerator 3 can change direction along with trend, between air pump 51 and pressure inlet 52, set up at least one flexible pipe 54, thus the torsion avoiding pressure inlet 52 is twisted and is wound around.
In sum; tidal current energy generating equipment provided by the invention is by arranging separable inner frame and outside framework; make TRT can carry out modularization assembling and replacement on the water surface; be greatly lowered maintenance and mounting cost, overcome tradition tidal current energy generating equipment cannot commercialization, large-scale a difficult problem.By arranging air pump and pressure inlet, guarantee that the internal pressure of each hydrogenerator on depth of water direction is more than or equal to external pressure, ensure generating set sealing property simultaneously effective solve existing generating set cannot in water depths work or the low problem of work efficiency, and make full use of the marine tidal-current energy on depth of water direction, improve generating efficiency, overcome the difficult problem that existing tidal current energy generating equipment cannot " do deep ".
By arranging rotating shaft or support, both can reduce the current directly impact and the external pressure impact on pressure inlet on cable and pressure inlet, also function to fixing cable and the effect of pressure inlet trend.
Additionally, by arranging rotating shaft, innovatively by change whole trunnion axis electromotor towards and non-individual changes the meet water mode at angle of blade and the load of electromotor is adjusted, make the no matter much electromotors of water velocity can ensure that always can in safe load normal power generation, drastically increase generating efficiency.By arranging rotating rotating shaft so that no matter flood tide or ebb tide, the blade of hydrogenerator can all the time towards current, so that it is guaranteed that maximum generated output.
And, arrangement at least two hydrogenerator, at least three hydrogenerator of also arranging on the direction be parallel to horizontal plane on the direction be perpendicular to horizontal plane so that hydrogenerator realization matrixization is arranged, make full use of the marine tidal-current energy that whole marine site is horizontal and vertical, be greatly improved generating efficiency.
Although the present invention is disclosed above by preferred embodiment; but it is not limited to the present invention, any know this those skilled in the art, without departing from the spirit and scope of the present invention; can doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on claims scope required for protection.

Claims (9)

1. a marine tidal-current energy generator group bottom seal protecting device, for protecting the generating set being positioned in water, it is characterised in that described marine tidal-current energy generator group bottom seal protecting device includes:
At least one air pump;
At least one pressure inlet, one end connection air pump of pressure inlet, the other end connects described generating set.
2. the marine tidal-current energy generator group bottom according to claim 1 seal protecting device; it is characterized in that; described marine tidal-current energy generator group bottom seal protecting device also includes at least one support, and the other end of described pressure inlet is first arranged in support and connects described generating set again.
3. the marine tidal-current energy generator group bottom according to claim 1 seal protecting device; it is characterized in that; described marine tidal-current energy generator group bottom seal protecting device also includes rotating shaft; the axis direction of described rotating shaft is perpendicular to horizontal plane, and the other end of described pressure inlet is first arranged in rotating shaft and connects described generating set again.
4. a tidal current energy generating equipment, it is characterised in that including:
Outside framework;
At least one inner frame, is arranged in described outside framework separably;
At least one hydrogenerator, including at least two blade and a generating set;
At least one cable, one end of cable is electrically connected described generating set;
Marine tidal-current energy generator group bottom seal protecting device, including at least one air pump and at least one pressure inlet, one end connection air pump of pressure inlet, the other end connects described generating set.
5. tidal current energy generating equipment according to claim 4; it is characterized in that; described marine tidal-current energy generator group bottom seal protecting device also includes at least one support; support is fixed on inner frame; the other end of described pressure inlet is first arranged in support and connects described generating set again, and the described end of cable is arranged in support and connects described generating set again.
6. tidal current energy generating equipment according to claim 4; it is characterized in that; described marine tidal-current energy generator group bottom seal protecting device also includes at least one rotating shaft; inner frame is fixed in rotating shaft; hydrogenerator is fixed on rotating shaft; the axis direction of rotating shaft is perpendicular to horizontal plane, and the other end of described pressure inlet is first arranged in rotating shaft and connects described generating set again, and the described end of cable is arranged in rotating shaft and connects described generating set again.
7. tidal current energy generating equipment according to claim 6, it is characterised in that at least one driver element, is positioned on the water surface, and connection rotating shaft rotates with drive shaft.
8. tidal current energy generating equipment according to claim 6, it is characterised in that described marine tidal-current energy generator group bottom seal protecting device also includes at least one flexible pipe, one end connection air pump of flexible pipe, other end connection pressure inlet.
9. tidal current energy generating equipment according to claim 4, it is characterized in that, at least two hydrogenerator is positioned at same inner frame and arranges along the direction being perpendicular to horizontal plane, the quantity of air pump and pressure inlet corresponds respectively to the quantity of hydrogenerator, the generating set of each pressure inlet one air pump of connection and a hydrogenerator.
CN201610309017.4A 2016-05-10 2016-05-10 Tidal current energy power generation device and underwater sealing protective device thereof Pending CN105781864A (en)

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Application publication date: 20160720