CN109441705A - A kind of fixed support structure designs method of Ocean Tidal Current Energy generating set - Google Patents
A kind of fixed support structure designs method of Ocean Tidal Current Energy generating set Download PDFInfo
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- CN109441705A CN109441705A CN201811552230.3A CN201811552230A CN109441705A CN 109441705 A CN109441705 A CN 109441705A CN 201811552230 A CN201811552230 A CN 201811552230A CN 109441705 A CN109441705 A CN 109441705A
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- current energy
- generating set
- ocean
- energy generating
- support construction
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
-
- 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
-
- 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
Abstract
The invention discloses a kind of fixed support structure designs methods of Ocean Tidal Current Energy generating set, comprise determining that unit sea conditions, unit operating condition, to the blade Preliminary design of unit, according to above-mentioned sea conditions, operating condition and blade Preliminary design, hydrodynamic load of the unit under each operating condition is calculated；The support construction model of unit is established according to the hydrodynamic load；By the way that sea conditions are applied on support construction model, and the impeller location by hydrodynamic load being applied on support construction model, carry out ultimate strength analysis, Fatigue Strength Analysis and Constructional Modal Analysis, and by loop iteration analytical calculation, until the analysis result of all operating condition lower support structure models is all satisfied the design requirement of Ocean Tidal Current Energy generating set.Design method design of the present invention is rationally, effectively reliable, systematicness is strong, can guarantee Ocean Tidal Current Energy generating set long-term running safety in the seawater, plays good facilitation to Ocean Tidal Current Energy development and utilization.
Description
Technical field
The present invention relates to marine tidal-current energy Wind turbines fields, more particularly to a kind of fixed branch of Ocean Tidal Current Energy generating set
Support structure design method.
Background technique
Ocean Tidal Current Energy refers to the kinetic energy of seawater flowing, refers mainly to seawater flowing relatively stable in seabed water channel and straits
And the regular seawater as caused by oceanic tide flows generated energy.The Land use systems of Ocean Tidal Current Energy are mainly
Power generation, the new force important as renewable energy are just worldwide greatly developed.
Currently, the support construction of Ocean Tidal Current Energy generating set mainly has fixed and two kinds of patterns of floatation type.It is wherein solid
Fixed pattern accounts for the overwhelming majority, the main more than piling bar and sea bed by squeezing into sea bed being led by what steel pipe formed of fixed support construction
Pipe frame structure composition.
Different from ocean platform and offshore wind farm unit, Ocean Tidal Current Energy generating set is run in b.s.l., sea
The foreign marine tidal-current energy generator group support construction ocean wave loadings being primarily subjected to and unit performance load and its between coupling effect
It answers, ocean current pushes the rotation of unit impeller, and impeller rotation can cause current fluctuation again.
There is presently no the Ocean Tidal Current Energy generating set support constructions for forming a set of comparison system for Ocean Tidal Current Energy power generation
Design method.The present invention is exactly to found a kind of fixed support construction of Ocean Tidal Current Energy generating set in prior art basis
Design method, this method had both considered practical marine environmental conditions locating for Ocean Tidal Current Energy generating set, it is further contemplated that born
The effect of intercoupling between a variety of load and load makes it design the fixed support suitable for Ocean Tidal Current Energy generating set
Structure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of fixed support structure designs of Ocean Tidal Current Energy generating set
Method, this method had both considered practical marine environmental conditions locating for Ocean Tidal Current Energy generating set, it is further contemplated that is born is a variety of
The effect of intercoupling between load and load makes it design the fixed support knot suitable for Ocean Tidal Current Energy generating set
Structure.
In order to solve the above technical problems, the present invention provides a kind of fixed support structure designs of Ocean Tidal Current Energy generating set
Method includes the following steps:
(1) sea conditions for determining marine tidal-current energy generator group, water level, current speed and side including unit operation site
To, ocean current wave height and period, wind speed and direction and ocean bottom soil condition；
(2) operating condition of marine tidal-current energy generator group, including unit starting, normal power generation, normal power generation and system are determined
Failure, orderly closedown, emergency shutdown, idle running, shutdown and fault condition；
(3) to the blade Preliminary design of marine tidal-current energy generator group, including the design to vane airfoil profile and structure size；
(4) blade of the operating condition that sea conditions, the step (2) determined according to step (1) determines and step (3) design
Aerofoil profile and structure size calculate hydrodynamic load of the marine tidal-current energy generator group under each operating condition；
(5) hydrodynamic load under each operating condition obtained according to step (4), establishes the marine tidal-current energy generator group
Support construction model, the support construction model include structural shape, size and the material property of support construction；
(6) sea conditions that step (1) determines are applied on the support construction model of step (5) foundation, and step
(4) the impeller hydrodynamic load being calculated is respectively applied to the impeller location on the support construction model, and it is strong to carry out the limit
Degree analysis, Fatigue Strength Analysis and Constructional Modal Analysis, and in step (3) to progress subsequent iteration analysis meter between step (6)
It calculates, until the design that the analysis result of support construction model described under all operating conditions meets the Ocean Tidal Current Energy generating set is wanted
It asks to get the optimal fixed support construction of Ocean Tidal Current Energy generating set.
As an improvement of the present invention, in the step (1) current speed include seawater surface, middle layer and bottom stream
Speed, and current direction includes positive incoming flow and reversed incoming flow.
It is further improved, the current speed and direction are according to the ellipse centered on the Ocean Tidal Current Energy generating set
Shape determines, and is to calculate frequency with every 10 ° of angles of rotation.
It is further improved, hydrodynamic load calculation method in the step (4) are as follows: according to three dimensional fluid theory of mechanics, together
When consider coupling between seawater power and blade rotary motion.
It is further improved, further includes blade different location when considering vane propeller-changing state in the hydrodynamic load calculating
The active force to intercouple with ocean current, blade angle is between 0 °~90 ° when the vane propeller-changing state includes positive incoming flow, with
And blade angle is the blade state between 180 °~270 ° when forward direction incoming flow.
It is further improved, the hydrodynamic load is calculated to be carried out using TIDAL-BLADED application software.
Be further improved, in the step (5) foundation of marine tidal-current energy generator group support construction model using SACS or
SEASAM application software.
It is further improved, when sea conditions are applied on the support construction model in the step (6), the seafloor soil
Relationship between earth condition and support construction is displaced z curve by soil parameters axial load t-, pile top load Q- is displaced z curve
And side bearing capacity p- is displaced y curve simulation.
It is further improved, the support construction of the marine tidal-current energy generator group uses can support two symmetrical marine tidal-current energies simultaneously
The support construction of generating set, operating condition includes that two generating sets are run and a generator simultaneously in the step (2)
The case where group operation.
It is further improved, the sea conditions further include 1 year one chance and the 50 years one extreme ocean conditions met.
By adopting such a design, the present invention has at least the following advantages:
The fixed support structure designs method of Ocean Tidal Current Energy generating set of the present invention, by considering generating set institute comprehensively
The work that intercouples between a variety of load and load that place's sea conditions and unit operating condition and the generating set are born
With finally obtaining the optimal fixed support construction of Ocean Tidal Current Energy generating set, the design further through the mode of loop iteration
Method design is rationally, effectively reliable, systematicness is strong, can overcome not systemic, not perfect property in current existing design and not
Advance can guarantee Ocean Tidal Current Energy generating set long-term running safety in the seawater, to the exploitation benefit of Ocean Tidal Current Energy
With good facilitation can be played.
Also by refining to current speed and current direction in design method of the present invention, and consider extreme ocean current item
Part and vane propeller-changing state etc., preferably the practical marine environment of simulation and unit operating condition, reach design Ocean Tidal Current Energy power generation
The optimization of unit fixing type support construction.
Detailed description of the invention
The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below
In conjunction with attached drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is Ocean Tidal Current Energy generating set support structure designs figure.
Fig. 2 is Ocean Tidal Current Energy generating set support construction and ocean current flow graph.
Specific embodiment
The present embodiment is the structure design that two symmetrical marine tidal-current energy generator groups are supported to a fixed support construction,
It is described below with design method.
Referring to shown in attached drawing 1, the fixed support structure designs method of the present embodiment Ocean Tidal Current Energy generating set, including such as
Lower step:
(1) sea conditions for determining marine tidal-current energy generator group, water level 1, current speed and side including unit operation site
To 2, ocean current wave height and period 3, wind speed and direction 4 and ocean bottom soil condition 5.
Wherein, current speed will consider the flow velocity of seawater surface, middle layer and bottom, and current direction include positive incoming flow and
Reversed incoming flow.And current speed and direction are determined according to the ellipse centered on the Ocean Tidal Current Energy generating set, and
It is calculated once, as shown in Fig. 2 with the variation of every 10 ° of angles.
There are also sea conditions it is contemplated that 1 year one chance and the 50 years one extreme ocean conditions met.
(2) according to the operation characteristic of marine tidal-current energy generator group, the operating condition of marine tidal-current energy generator group, including unit are determined
Starting, normal power generation, normal power generation and the system failure, orderly closedown, emergency shutdown, idle running, shutdown and fault condition.
Wherein especially note that two can be supported simultaneously by being used by the support construction of the marine tidal-current energy generator group in this present embodiment
The support construction of the symmetrical marine tidal-current energy generator group of platform, so the operating condition of the marine tidal-current energy generator group will be in view of two hairs
The case where motor group is run simultaneously and a generating set is run, another Wind turbines failure.
(3) according to existing experience to the blade Preliminary design of marine tidal-current energy generator group, including to vane airfoil profile and structure ruler
Very little design.
(4) blade of the operating condition that sea conditions, the step (2) determined according to step (1) determines and step (3) design
Aerofoil profile and structure size calculate the hydrodynamic load of the marine tidal-current energy generator group under each operating condition.
The progress of TIDAL-BLADED application software can be used in hydrodynamic load calculating in the present embodiment, according to three-dimensional flow physical strength
Theory, while considering that the coupling between seawater power and blade rotary motion calculates hydrodynamic load.
In addition, in hydrodynamic load calculating, it is also contemplated that blade different location and ocean current are mutual when vane propeller-changing state
The active force of coupling, blade angle is between 0 ° -90 ° when which includes positive incoming flow, and when positive incoming flow
Blade angle is the blade state between 180 ° -270 °.
(5) hydrodynamic load under each operating condition obtained according to step (4), establishes the branch of the marine tidal-current energy generator group
Support structure model, the support construction model include structural shape, size and the material property of support construction.
Wherein, the foundation of marine tidal-current energy generator group support construction model uses SACS or SEASAM application software, certainly
Other software programs can be used.
(6) sea conditions that step (1) determines are applied on the support construction model of step (5) foundation, and step
(4) the impeller hydrodynamic load being calculated is respectively applied to two impeller locations on the support construction model, carries out pole
Intensive analysis, Fatigue Strength Analysis and Constructional Modal Analysis are limited, and in step (3) to progress subsequent iteration point between step (6)
Analysis calculates, until the design that the analysis result of the support construction model under all operating conditions meets the Ocean Tidal Current Energy generating set is wanted
It asks to get the optimal fixed support construction of Ocean Tidal Current Energy generating set.
Wherein, when sea conditions being applied on the support construction model, between ocean bottom soil condition and support construction
Relationship is displaced z curve by soil parameters axial load t-, pile top load Q- is displaced z curve and side bearing capacity p- is displaced y
Curve is simulated.
The fixed support structure designs method of Ocean Tidal Current Energy generating set of the present invention is a kind of design point of subsequent iteration
Analysis method considers sea conditions, unit operating condition locating for generating set comprehensively, carries out blade Preliminary design, then carries out water
Dynamic load(loading) calculates, and establishes preliminary support construction model on this basis, and be applied to by sea conditions and hydrodynamic load
The design analysis of support construction model is fixed as a result, obtaining optimal Ocean Tidal Current Energy generating set by way of loop iteration
Formula support construction.The design method considers practical marine environmental conditions locating for Ocean Tidal Current Energy generating set, is born
The effect of intercoupling between a variety of load and load is a kind of reasonable, effective, reliable design method, overcomes existing at present
Not systemic, not perfect property in design and not advanced, can guarantee that Ocean Tidal Current Energy generating set is long-term in the seawater
The safety of operation can play good facilitation to the development and utilization of Ocean Tidal Current Energy.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this
Field technical staff makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this hair
In bright protection scope.
Claims (10)
1. a kind of fixed support structure designs method of Ocean Tidal Current Energy generating set, which comprises the steps of:
(1) sea conditions for determining marine tidal-current energy generator group, water level, current speed and direction, sea including unit operation site
Flow wave height and period, wind speed and direction and ocean bottom soil condition；
(2) operating condition of marine tidal-current energy generator group is determined, including unit starting, normal power generation, normal power generation and the system failure,
Orderly closedown, emergency shutdown, idle running, shutdown and fault condition；
(3) to the blade Preliminary design of marine tidal-current energy generator group, including the design to vane airfoil profile and structure size；
(4) vane airfoil profile of the operating condition that sea conditions, the step (2) determined according to step (1) determines and step (3) design
With structure size, hydrodynamic load of the marine tidal-current energy generator group under each operating condition is calculated；
(5) hydrodynamic load under each operating condition obtained according to step (4), establishes the support of the marine tidal-current energy generator group
Structural model, the support construction model include structural shape, size and the material property of support construction；
(6) sea conditions that step (1) determines are applied on the support construction model of step (5) foundation, and step (4) are counted
Obtained impeller hydrodynamic load is respectively applied to the impeller location on the support construction model, carries out ultimate strength point
Analysis, Fatigue Strength Analysis and Constructional Modal Analysis, and in step (3) to subsequent iteration analytical calculation is carried out between step (6), directly
The analysis result of the support construction model meets the design requirement of the Ocean Tidal Current Energy generating set under to all operating conditions, i.e.,
Obtain the optimal fixed support construction of Ocean Tidal Current Energy generating set.
2. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 1, which is characterized in that
Current speed includes the flow velocity of seawater surface, middle layer and bottom in the step (1), and current direction is including positive incoming flow and instead
To incoming flow.
3. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 2, which is characterized in that
The current speed and direction are determining according to the ellipse centered on the Ocean Tidal Current Energy generating set, and with every rotation
10 ° of angles are to calculate frequency.
4. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 1, which is characterized in that
Hydrodynamic load calculation method in the step (4) are as follows: according to three dimensional fluid theory of mechanics, while considering seawater power and blade
Coupling between rotary motion.
5. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 4, which is characterized in that
It further include the effect that blade different location and ocean current intercouple when considering vane propeller-changing state during the hydrodynamic load calculates
Power, blade angle is between 0 °~90 ° when the vane propeller-changing state includes positive incoming flow, and blade angle when positive incoming flow
For the blade state between 180 °~270 °.
6. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 4, which is characterized in that
The hydrodynamic load is calculated to be carried out using TIDAL-BLADED application software.
7. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 1, which is characterized in that
The foundation of marine tidal-current energy generator group support construction model uses SACS or SEASAM application software in the step (5).
8. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 1, which is characterized in that
When sea conditions are applied on the support construction model in the step (6), the ocean bottom soil condition and support construction it
Between relationship z curve is displaced by soil parameters axial load t-, pile top load Q- is displaced z curve and side bearing capacity p-
Move y curve simulation.
9. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 1, which is characterized in that
The support construction of the marine tidal-current energy generator group uses the support construction that can support two symmetrical marine tidal-current energy generator groups simultaneously,
Operating condition includes the case where two generating sets in the step (2) while operation and a generating set are run.
10. the fixed support structure designs method of Ocean Tidal Current Energy generating set according to claim 1, feature exist
In the sea conditions further include 1 year one chance and the 50 years one extreme ocean conditions met.
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| CN201811552230.3A CN109441705B (en) | 2018-12-19 | 2018-12-19 | Design method for fixed support structure of ocean tidal current energy generator set |
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