CN107120229A - A kind of prefabricated blade tip, extension blade construction and the method for extending blade - Google Patents
A kind of prefabricated blade tip, extension blade construction and the method for extending blade Download PDFInfo
- Publication number
- CN107120229A CN107120229A CN201710527922.1A CN201710527922A CN107120229A CN 107120229 A CN107120229 A CN 107120229A CN 201710527922 A CN201710527922 A CN 201710527922A CN 107120229 A CN107120229 A CN 107120229A
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- China
- Prior art keywords
- blade
- blade tip
- prefabricated
- face
- supporting construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0025—Producing blades or the like, e.g. blades for turbines, propellers, or wings
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of prefabricated blade tip, extension blade construction and the method for extending blade, the prefabricated blade tip includes the roomy supporting construction of the independence in PS face-pieces body, SS face-pieces body and PS face-pieces body, SS face-piece body cavity bodies；The roomy supporting construction of the independence is linked together by way of bonding with PS faces and SS face-piece bodies, or with SS face-pieces body or PS face-piece body by integral forming.It is mainly to mitigate prefabricated blade tip weight configuration by the use of independent roomy supporting construction as single supporting construction, more traditional double web blades, the prefabricated blade tip of single supporting construction substantially reduces the weight of blade under conditions of strength and stability requirement is met, smaller to blade loading and frequency influence；In addition, the setting of transition zone is to ensure the fairing transition of blade profile, the fairing of profile can reduce resistance coefficient, the fairing for ensureing rigidity, avoid load from being mutated.The setting of articulamentum be in order to bonding section strengthen, it is ensured that the reliability of connection.
Description
Technical field
Extend technology the present invention relates to fan blade of wind generating set, and in particular to a kind of prefabricated blade tip, extension blade
Structure and the method for extending blade.
Background technology
In actual applications, due to reasons such as change, the improvement of LOAD FOR technology of wind-resources, existing operation is caused
Part Wind turbines are greatly improved the space of generating efficiency.Wind electricity blade is that wind power generating set is used for catching wind energy most
Important component, in the case of identical wind-resources, blade aerodynamic similar nature, appropriate increase length of blade can improve year generating
Amount, reduces cost of electricity-generating.And extending blade compared to blade is changed, its cost is relatively low, return period is short, therefore increasing factory
Family have selected the in-service blade of extension.
Extension blade can cause very many influences to prophyll piece, such as：Load increase, frequency shift etc., for as far as possible
The influence to prophyll piece is reduced, farthest control extension rear blade weightening is very important, while control weight,
Ensure to meet the requirement of blade strength and rigidity.In existing blade extension technology, emphatically to blade extension system, blade with prolonging
The design connected between long section, and lack the Optimal Structure Designing to blade extension in itself.
The content of the invention
For above-mentioned problems of the prior art, the invention provides a kind of prefabricated blade tip, extension blade construction with
And the method for extension blade.
To realize the purpose of the present invention, the invention provides a kind of prefabricated blade tip, including PS face-pieces body, SS face-pieces body and
The roomy supporting construction of independence in PS face-pieces body, SS face-piece body cavity bodies；The roomy supporting construction of the independence passes through bonding
Mode links together with PS faces and SS face-piece bodies, or with SS face-pieces body or PS face-piece body by integral forming.
Preferably, the PS face-pieces body of the prefabricated blade tip and SS face-piece bodies, are divided into bonding section part and main part, described
Independent roomy supporting construction is arranged in the main part of prefabricated blade tip.
Preferably, the roomy supporting construction of the independence is bulk, and the roomy supporting construction of the independence is bulk, and it is tied
Structure includes but is not limited to, and is the sandwich structure that composite inner is enclosed with core formation, or directly only for generous core
Vertical to constitute, core is PVC foams either ba lsa wood etc..
Preferably, the sandwich material thickness and position of the roomy supporting construction of the independence, according to prefabricated blade tip
Stability and rigidity property are determined.
Correspondingly, blade construction, including the prefabricated blade tip described in above-mentioned any one are extended present invention also offers one kind
With blade to be extended, it is an entirety that the prefabricated blade tip is Nian Jie using adhesive with blade to be extended.
Preferably, the prefabricated blade tip is bonded in the bonding section of the blade to be extended.
Preferably, blade to be extended bonding section blade root side shaped transition layer, to transition blade extend and in advance
Thickness difference between blade tip processed, is molded articulamentum, to ensure blade to be extended and prefabricated blade tip on the outside of transition zone and bonding section
Bonding it is solid and reliable.
With a kind of above-mentioned extension blade construction correspondingly, present invention also offers a kind of method for extending blade, including with
Lower step：
(1) the PS face-pieces body of moulding prefabricated blade tip, SS face-pieces body and independent roomy supporting construction in a mold are distinguished, and
It is bonded as an entirety, or protects bonding plane, carries out all or part of bonding during installation again；
(2) a part of blade tip of blade to be extended is cut off, is determined to be bonded on blade to be extended according to adhesive strength requirement
Section, in bonding section outer surface coating adhesive；
(3) when prefabricated blade tip has been bonded as an entirety before installing, using adhesive tool, prefabricated blade tip is socketed in and treated
Extend the correct position that blade is bonded section；When blade tip is not bonded as an entirety before installing, using adhesive tool, by PS and SS faces
Blade bonding section both sides correct position to be extended is respectively placed in, while by prefabricated blade tip matched moulds, prefabricated blade tip is bonded in
On blade to be extended；
(4) after extension blade is Nian Jie with prefabricated blade tip, in blade to be extended and Nian Jie section adjacent position shaped transition layer,
Afterwards articulamentum, heating, cure under pressure are molded on the outside of transition zone and bonding section.
Preferably, the roomy supporting construction of the independence is bulk, and the roomy supporting construction of the independence is bulk, and it is tied
Structure includes but is not limited to, and is the sandwich structure that composite inner is enclosed with core formation, or directly only for generous core
Vertical to constitute, core is PVC foams either bal sa wood.
Preferably, the sandwich material thickness and position of the roomy supporting construction of the independence, according to prefabricated blade tip
Stability and rigidity property are determined.
Compared with prior art, beneficial effects of the present invention are to be used as single support knot by the use of independent roomy supporting construction
It is to mitigate prefabricated blade tip weight configuration that structure, which is mainly, more traditional double web blades, and the prefabricated blade tip of single supporting construction is full
The weight of blade is substantially reduced under conditions of sufficient strength and stability requirement, it is smaller to blade loading and frequency influence；In addition, mistake
The setting for crossing layer is that, in order to ensure the fairing transition of blade profile, the fairing of profile can reduce resistance coefficient, ensure the light of rigidity
It is suitable, avoid load from being mutated.The setting of articulamentum be in order to bonding section strengthen, it is ensured that the reliability of connection.
Brief description of the drawings
Fig. 1 show blade extension schematic flow sheet：
1- is the prophyll piece before extension；2- is the main part after prophyll piece excision blade tip before extension, is named as and waits to extend
Blade, blade to be extended is divided into two body parts and the bonding section for bonding；3- is prophyll piece excision before extension
Tip segment；4- is the main part of blade to be extended；5- is prefabricated blade tip main part；
Fig. 2 show blade bonding detail view；
6- is the bonding section of blade to be extended；7- is the bonding section of prefabricated blade tip；8- is used for transition thickness for bonding section
Transition zone；The articulamentum that 9- is used to strengthen for bonding section；
Fig. 3 show prefabricated tip structure detail view；
10 be prefabricated blade tip SS housings；11 be prefabricated blade tip independently roomy supporting construction；12 be prefabricated blade tip PS housings；
Fig. 4 is shown on the left of prefabricated blade tip laying detail view, dotted line is bonded section, the prefabricated blade tip master of right side wall for prefabricated blade tip
Body portion.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment only to explain the present invention, be not intended to limit the present invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, it would be desirable to which the prophyll piece (1) of extension turns to the position specified, lock, make it
Shut down.The blade tip (3) of prophyll piece is cut off, blade to be extended (2) is obtained.Blade to be extended is divided into two parts：Main part
(4) and bonding section (6).
Designed according to profile and strength demand and make the prefabricated blade tip for extension, prefabricated blade tip by SS housings (10),
PS housings (12), independent roomy supporting construction (11) composition, will be pre- in length direction in SS housings (11) and PS housings (12)
Blade tip processed is divided into two parts：Main part (5) and bonding section (7), bonding section have thickness transitions function concurrently, as shown in Figure 4.PS and
SS face-piece bodies are divided into bonding section part and blade tip main part, and bonding section part has thickness transitions function concurrently, in bonding section transition
After the completion of, the main part of PS and SS housings can reach certain thickness；
Independent roomy supporting construction (11) is independent, and it is common to be different from the double webs and covering of usual blade design
The case structure of formation.The roomy supporting construction of the independence is bulk, and its structure includes but is not limited to, and is composite inner
Be enclosed with the sandwich structure of core formation, or directly independently constitute for generous core, core be PVC foams either
Balsa wood etc..
It includes six faces, and four sides are to face directly, upper and lower end face respectively with PS housings (12) and SS housings (10)
Internal contour shape is consistent.
The thickness and position of independent roomy supporting construction (11), according to the stability and rigidity property of prefabricated blade tip
It is determined that.Traditional double web structure blades are substituted with independent roomy supporting construction, the purpose for further mitigating weight are realized, together
When also reduce operational sequence, be easy to the arrangement of wire, osculum, improve production efficiency and quality stability.
The design and arrangement of independent roomy supporting construction (11) mainly consider the buckling stability of prefabricated blade tip, by right
The design of this supporting construction, can mitigate leaf weight to greatest extent on the basis of blade buckling stability is ensured.In blade
During buckling stability is calculated, according to GL specifications, the modulus of elasticity of material is answered divided by local binding method γMc；I.e.：
Local binding method is defined as：
In formula：γM0- 1.35；
C1c- 1.1 modulus of elasticity dispersiveness；
C2c- 1.1 temperature influence；
C3c- 1.25 linear analysis.
The buckling stability of blade is checked using above-mentioned coefficient, it is final to determine independent roomy supporting construction.
Using adhesive tool, the bonding section of prefabricated blade tip is bonded in the bonding of blade to be extended section, such as Fig. 2 left figures institute
Show, in the blade root side shaped transition layer (8) of the bonding section of blade to be extended, to the prefabricated blade tip of transition and treat that prefabricated blade tip is direct
Thickness difference, to ensure the fairing transition of blade profile, afterwards again transition zone and bonding section on the outside of shaping articulamentum (9), with protect
Demonstrate,prove blade to be extended bonding with prefabricated blade tip solid and reliable.Under the auxiliary of adhesive tool, bonding location is pressurizeed, added
Heat, solidification.
Described above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of prefabricated blade tip, it is characterised in that including PS face-pieces body, SS face-pieces body and PS face-pieces body, SS faces shell cavity
The roomy supporting construction of interior independence；The roomy supporting construction of the independence is connected by way of bonding with PS faces and SS face-pieces body
Be connected together, or with SS face-pieces body or PS face-piece body by integral forming.
2. a kind of prefabricated blade tip according to claim 1, it is characterised in that the PS face-pieces body of the prefabricated blade tip and SS faces
Housing, is divided into bonding section part and main part, and the roomy supporting construction of the independence is arranged in the main part of prefabricated blade tip.
3. a kind of prefabricated blade tip according to claim 2, it is characterised in that the roomy supporting construction of the independence is block
Shape, the roomy supporting construction of the independence is bulk, and it is the sandwich structure that composite inner is enclosed with core formation, or
Directly independently constituted for generous core, core is PVC foams either balsa wood.
4. a kind of prefabricated blade tip according to claim 3, it is characterised in that the sandwich of the roomy supporting construction of the independence
Material thickness and position, are determined according to the stability of prefabricated blade tip and rigidity property.
5. one kind extension blade construction, it is characterised in that including the prefabricated blade tip as any one of claim 1-5 with treat
Extend blade, the prefabricated blade tip is Nian Jie for an entirety using adhesive with blade to be extended.
6. a kind of extension blade construction according to claim 5, it is characterised in that the prefabricated blade tip is bonded in described treat
Extend the bonding section of blade.
7. a kind of extension blade construction according to claim 6, it is characterised in that in the leaf of the bonding section of blade to be extended
Root side shaped transition layer, to the thickness difference between transition blade to be extended and prefabricated blade tip, on the outside of transition zone and bonding section
Articulamentum is molded, to ensure that blade to be extended is bonding with prefabricated blade tip solid and reliable.
8. a kind of method for extending blade, it is characterised in that comprise the following steps：
(1) the difference PS face-pieces body of moulding prefabricated blade tip, SS face-pieces body and independent roomy supporting construction, and be bonded in a mold
For an entirety, or bonding plane is protected, carry out all or part of bonding during installation again；
(2) a part of blade tip of blade to be extended is cut off, bonding section is determined on blade to be extended according to adhesive strength requirement,
It is bonded section outer surface coating adhesive；
(3) when prefabricated blade tip has been bonded as an entirety before installing, using adhesive tool, prefabricated blade tip is bonded in and waits to extend
Blade is bonded the correct position of section；When blade tip is not bonded as an entirety before installing, using adhesive tool, PS and SS faces are distinguished
Blade bonding section both sides correct position to be extended is placed in, while by prefabricated blade tip matched moulds, prefabricated blade tip is bonded in and waits to prolong
On linear leaf；
(4) after extension blade is Nian Jie with prefabricated blade tip, in blade to be extended and Nian Jie section adjacent position shaped transition layer, afterwards
Articulamentum, heating, cure under pressure are molded on the outside of transition zone and bonding section.
9. the method for extension blade according to claim 8, it is characterised in that the roomy supporting construction of the independence is block
Shape, the roomy supporting construction of the independence is bulk, and it is the sandwich structure that composite inner is enclosed with core formation, or
Directly independently constituted for generous core, core is PVC foams either balsa wood.
10. the method for extension blade according to claim 8, it is characterised in that the roomy supporting construction of the independence
Sandwich material thickness and position, are determined according to the stability of prefabricated blade tip and rigidity property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527922.1A CN107120229A (en) | 2017-06-30 | 2017-06-30 | A kind of prefabricated blade tip, extension blade construction and the method for extending blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527922.1A CN107120229A (en) | 2017-06-30 | 2017-06-30 | A kind of prefabricated blade tip, extension blade construction and the method for extending blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107120229A true CN107120229A (en) | 2017-09-01 |
Family
ID=59730559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710527922.1A Pending CN107120229A (en) | 2017-06-30 | 2017-06-30 | A kind of prefabricated blade tip, extension blade construction and the method for extending blade |
Country Status (1)
| Country | Link |
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| CN (1) | CN107120229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286696A (en) * | 2018-11-01 | 2021-08-20 | 通用电气公司 | Spacer material for reducing a bond gap between a beam structure and a blade shell of a segmented rotor blade |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204663759U (en) * | 2015-02-06 | 2015-09-23 | 庄岳兴 | Fan blade of wind generating set blade tip prolonged section structure and blade thereof and unit |
| CN207297228U (en) * | 2017-06-30 | 2018-05-01 | 中科国风科技有限公司 | A kind of prefabricated blade tip, extend blade construction |
-
2017
- 2017-06-30 CN CN201710527922.1A patent/CN107120229A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204663759U (en) * | 2015-02-06 | 2015-09-23 | 庄岳兴 | Fan blade of wind generating set blade tip prolonged section structure and blade thereof and unit |
| CN207297228U (en) * | 2017-06-30 | 2018-05-01 | 中科国风科技有限公司 | A kind of prefabricated blade tip, extend blade construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113286696A (en) * | 2018-11-01 | 2021-08-20 | 通用电气公司 | Spacer material for reducing a bond gap between a beam structure and a blade shell of a segmented rotor blade |
| US11767819B2 (en) | 2018-11-01 | 2023-09-26 | General Electric Company | Spacer material, for reducing a bond gap between a beam structure and a blade shell of a segmented rotor blade |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170901 |
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| RJ01 | Rejection of invention patent application after publication |