CN116357509A - Blade root embedded part, wind power blade and wind power blade manufacturing method - Google Patents

Blade root embedded part, wind power blade and wind power blade manufacturing method Download PDF

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Publication number
CN116357509A
CN116357509A CN202310117860.2A CN202310117860A CN116357509A CN 116357509 A CN116357509 A CN 116357509A CN 202310117860 A CN202310117860 A CN 202310117860A CN 116357509 A CN116357509 A CN 116357509A
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CN
China
Prior art keywords
blade
bolt sleeve
embedded
bolt
root
Prior art date
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Pending
Application number
CN202310117860.2A
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Chinese (zh)
Inventor
乔小亮
董安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinomatech Wind Power Blade Co Ltd
Original Assignee
Zhongfu Lianzhong Jiuquan Composite Materials Co ltd
Lianyungang Zhongfu Lianzhong Composites Group Co Ltd
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Filing date
Publication date
Application filed by Zhongfu Lianzhong Jiuquan Composite Materials Co ltd, Lianyungang Zhongfu Lianzhong Composites Group Co Ltd filed Critical Zhongfu Lianzhong Jiuquan Composite Materials Co ltd
Priority to CN202310117860.2A priority Critical patent/CN116357509A/en
Publication of CN116357509A publication Critical patent/CN116357509A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/681—Component parts, details or accessories; Auxiliary operations
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/082—Blades, e.g. for helicopters
    • 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)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention belongs to the technical field of wind power blade manufacturing, and discloses a blade root embedded part, a wind power blade and a wind power blade manufacturing method. The shell structure is coaxially connected with the root of the blade body; the plurality of embedded bolt sleeves are sequentially arranged in the shell structure at intervals along the circumferential direction of the root of the blade body; the number of the bolt sleeve inserting blocks is multiple, and the bolt sleeve inserting blocks are arranged between two adjacent embedded bolt sleeves; the plurality of wedge-shaped blocks are in one-to-one correspondence with the plurality of embedded bolt sleeves and respectively propped against the end parts of the plurality of embedded bolt sleeves. The embedded part of the blade root can prevent stress concentration, effectively improve the connection performance of the root of the wind power blade and avoid the risk of loosening and falling of the wind power blade.

Description

Blade root embedded part, wind power blade and wind power blade manufacturing method
Technical Field
The invention relates to the technical field of wind power blade manufacturing, in particular to a blade root embedded part, a wind power blade and a wind power blade manufacturing method.
Background
The wind power blades are connected with the wind turbine generator set through connecting bolts at the root parts. The connecting bolt is connected with the root of the blade through a T-shaped round nut or an embedded bolt sleeve. The connection mode of utilizing the T-shaped round nut needs to punch and install the root of the blade, and strength of the root of the blade is easy to weaken. The problem of perforation of the root of the blade can be avoided by utilizing the connection mode of the embedded bolt sleeve; and the number of the embedded bolt sleeves can be selected according to actual needs, so that the number of the connecting bolts is selected, and reasonable and reliable connection is provided for wind power blades with different volumes and weights.
The process for embedding the bolt sleeve at the root of the blade is widely applied in the wind power blade industry, and the connection strength is mainly provided by the bonding strength of a glass fiber reinforced plastic layer clamped between the outer part of the embedded bolt sleeve and a glass fiber reinforced plastic layer at the root of the blade. The existing embedded bolt sleeve at the root of the wind power blade is generally cylindrical, the rigidity mutation phenomenon exists at the end position of the embedded bolt sleeve, the stress concentration is easy to cause, and the bearing capacity of the wind power blade connecting system is weakened to a certain extent.
And filling the embedded bolt sleeves through UD blocks. The existing UD blocks cannot be balanced between improving the molding convenience and filling effect and improving the bonding strength. The connection strength between the embedded bolt sleeve and the root of the blade can be reduced, so that the connection system of the wind power blade and the hub is damaged, and even a safety accident occurs.
Therefore, a blade root embedded part, a wind power blade and a wind power blade manufacturing method are needed to solve the above problems.
Disclosure of Invention
According to one aspect of the invention, the purpose is to provide the blade root embedded part, which can prevent stress concentration, effectively improve the connection performance of the root of the wind power blade and avoid the risk of loosening and falling of the wind power blade.
To achieve the purpose, the invention adopts the following technical scheme:
blade root built-in fitting includes:
the shell structure is coaxially connected to the root of the blade body;
the blade comprises a blade body, a plurality of embedded bolt sleeves, a plurality of shell structures and a plurality of blade covers, wherein the embedded bolt sleeves are sequentially arranged in the shell structures at intervals along the circumferential direction of the root of the blade body;
the bolt sleeves are inserted into a plurality of blocks, and the bolt sleeves are inserted into the blocks between every two adjacent embedded bolt sleeves;
the plurality of wedge blocks are in one-to-one correspondence with the plurality of embedded bolt sleeves and respectively abut against the end parts of the plurality of embedded bolt sleeves.
As the preferable scheme of the blade root embedded part provided by the invention, the embedded bolt sleeve comprises a bolt sleeve body, and the bolt sleeve body is of a hollow cuboid structure.
As the preferable scheme of the blade root embedded part provided by the invention, the embedded bolt sleeve further comprises a bolt sleeve head part and a bolt sleeve tail part, wherein the bolt sleeve head part and the bolt sleeve tail part are respectively fixedly connected to two ends of the bolt sleeve body, and the wedge-shaped block is connected to the bolt sleeve tail part.
As the preferable scheme of the embedded part of the blade root, which is provided by the invention, the end part of the wedge block is fixedly connected to the tail part of the bolt sleeve, and a first sealing part is clamped between the end part of the wedge block and the tail part of the bolt sleeve.
As the preferable scheme of the blade root embedded part provided by the invention, the outside of the bolt sleeve body is provided with the groove structure, the peripheral side of the bolt sleeve body is wound with the fiber yarn, and the fiber yarn is embedded in the groove structure.
As the preferable scheme of the blade root embedded part provided by the invention, the bolt sleeve inserting block comprises the clamping part and the inclined part, wherein the clamping part is clamped between two adjacent embedded bolt sleeves, the height of the clamping part is equal to that of the embedded bolt sleeves, the inclined part is connected with one end of the clamping part, and the upper end face of the inclined part is gradually close to the lower end face of the inclined part along the direction away from the clamping part.
As the preferable scheme of the embedded part of the blade root, the upper end face of the wedge-shaped block is flush with the upper end face of the inclined part.
As the preferable scheme of the blade root embedded part provided by the invention, the shell structure comprises a first skin, a first reinforcing layer, a second skin and a second reinforcing layer, wherein the first skin and the second skin are respectively covered on the upper side and the lower side of a plurality of embedded bolt sleeves, a plurality of bolt sleeve inserting blocks and a plurality of wedge-shaped blocks, the first reinforcing layer is paved on one side, opposite to the second skin, of the first skin, and the second reinforcing layer is paved on one side, opposite to the first skin, of the second skin.
According to a further aspect of the present invention, it is an object to provide a wind power blade, which includes a blade body, and further includes a blade root embedded part according to any one of the above schemes, wherein the blade root embedded part is fixedly connected to a root of the blade body.
According to still another aspect of the present invention, it is an object to provide a wind power blade manufacturing method, by which a wind power blade according to the above aspect is manufactured, the wind power blade manufacturing method comprising the steps of:
step S100, sequentially paving a first skin and a first reinforcing layer in a wind power blade mould;
step 200, arranging a pre-buried bolt sleeve on the first reinforcing layer, and fixing the head of the bolt sleeve on the die flange;
step S300, arranging a bolt sleeve inserting block between two adjacent embedded bolt sleeves;
step S400, arranging wedge blocks at the tail parts of the bolt sleeves;
step S500, paving a second reinforcing layer and a second skin on one side, away from the first reinforcing layer, of the embedded bolt sleeve, the bolt sleeve inserting block and the wedge block in sequence;
step S600, vacuum pouring to form a blade root embedded part;
and step S700, fixedly connecting the embedded part of the blade root to the root of the blade body.
The invention has the beneficial effects that:
the blade root embedded part provided by the invention comprises a shell structure, an embedded bolt sleeve, a bolt sleeve inserting block and a wedge-shaped block. The shell structure is coaxially connected to the root of the blade body, the number of the embedded bolt sleeves is multiple, and the embedded bolt sleeves are sequentially arranged in the shell structure at intervals along the circumference of the root of the blade body. That is, the shell structure can protect the embedded bolt sleeve, the inserted block between the bolt sleeves and the wedge block, and strengthen the structural strength of the embedded bolt sleeve. The bolt sleeve is provided with a plurality of inserting blocks, and the bolt sleeve inserting blocks are arranged between two adjacent embedded bolt sleeves. That is, the bolt sleeve inserting block can be used as structural supplement between two adjacent embedded bolt sleeves, and the following degree of the embedded bolt sleeves relative to the root of the circular blade body is increased. The plurality of wedge-shaped blocks are in one-to-one correspondence with the plurality of embedded bolt sleeves and respectively propped against the end parts of the plurality of embedded bolt sleeves. That is, the wedge block can position the embedded bolt sleeve in the direction parallel to the axial direction of the embedded bolt sleeve, and prevent dislocation. The embedded part of the blade root can prevent stress concentration, effectively improve the connection performance of the root of the wind power blade and avoid the risk of loosening and falling of the wind power blade.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic view of a blade root embedment provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a part of a blade root embedded part according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of connection between a pre-buried bolt sleeve and a wedge block according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an embedded bolt sleeve according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram II of an embedded bolt sleeve according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an insert block for a bolt sleeve according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a wedge block according to an embodiment of the present invention.
In the figure:
100. a housing structure; 110. a first skin; 130. a second skin;
200. embedding a bolt sleeve; 210. a bolt sleeve body; 211. a trench structure; 220. a bolt sleeve head; 230. the tail part of the bolt sleeve;
300. a block is inserted between the bolt sleeves; 310. a clamping part; 320. an inclined portion;
400. wedge blocks.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Fig. 1 shows a schematic structural view of a blade root embedded part provided by an embodiment of the present invention; fig. 2 shows a schematic view of a part of a blade root embedded part according to an embodiment of the present invention; fig. 3 shows a schematic connection diagram of a pre-buried bolt sleeve and a wedge block provided by an embodiment of the invention. Referring to fig. 1-3, the present embodiment provides a blade root embedment. The embedded blade root comprises a shell structure 100, an embedded bolt sleeve 200, a bolt sleeve inserting block 300 and a wedge block 400.
Specifically, the shell structure 100 is coaxially engaged to the root of the blade body. The number of the embedded bolt sleeves 200 is plural, and the embedded bolt sleeves 200 are sequentially arranged in the shell structure 100 at intervals along the circumferential direction of the root of the blade body. The number of the bolt sleeve inserting blocks 300 is plural, and the bolt sleeve inserting blocks 300 are arranged between two adjacent embedded bolt sleeves 200. The plurality of wedge blocks 400 are arranged, and the plurality of wedge blocks 400 are in one-to-one correspondence with the plurality of embedded bolt sleeves 200 and respectively abut against the end parts of the plurality of embedded bolt sleeves 200. That is, the housing structure 100 can protect the embedded bolt sleeve 200, the bolt sleeve inserting block 300 and the wedge block 400, and strengthen the structural strength thereof. The bolt sleeve inserting block 300 can be used as structural supplement between two adjacent embedded bolt sleeves 200, and the following degree of the embedded bolt sleeves 200 relative to the root of the circular blade body is increased. The wedge 400 can position the pre-buried bolt bush 200 in a direction parallel to the axial direction of the pre-buried bolt bush 200, preventing dislocation.
Still more specifically, the shell structure 100 includes a first skin 110, a first reinforcement layer, a second skin 130, and a second reinforcement layer. The first skin 110 and the second skin 130 are respectively disposed on the upper and lower sides of the embedded bolt sleeves 200, the inserting blocks 300 between the bolt sleeves, and the wedge blocks 400. The first reinforcement layer is laid on a side of the first skin 110 facing the second skin 130, and the second reinforcement layer is laid on a side of the second skin 130 facing the first skin 110. In this embodiment, the first reinforcing layer and the second reinforcing layer may each be a fibrous cloth.
Fig. 4 shows a schematic structural diagram of a pre-buried bolt sleeve provided by an embodiment of the present invention; fig. 5 shows a second schematic structural diagram of the embedded bolt sleeve according to the embodiment of the present invention. Referring to fig. 4 and 5, the pre-buried bolt sleeve 200 includes a sleeve body 210, a sleeve head 220, and a sleeve tail 230.
Specifically, the bolt sleeve body 210 is in a hollow cuboid structure, and internal threads are arranged in the bolt sleeve body, so that the subsequent bolt is in threaded connection with the bolt, and the connection between the wind turbine blade and the wind turbine generator is realized. The bolt sleeve body 210 is designed into a cuboid structure, so that the problem of obvious stress concentration caused by the phenomenon of rigidity mutation at the end part of the embedded bolt sleeve 200 can be avoided.
More specifically, the bolt sleeve head 220 and the bolt sleeve tail 230 are integrally formed and fixedly connected to two ends of the bolt sleeve body 210, and the wedge block 400 can be connected to the bolt sleeve tail 230. The bolt sleeve head 220 can be connected to a die flange of a wind power blade die when manufacturing a wind power blade, so as to realize reliable positioning of the embedded bolt sleeve 200 in the wind power blade die.
More specifically, the outside of the bolt housing body 210 is provided with a groove structure 211. The groove structure 211 may be a plurality of annular grooves formed along the axial direction of the bolt sleeve body 210 at intervals, and a wavy or zigzag structure is formed on the outside of the bolt sleeve body 210. The peripheral side of the bolt housing body 210 is wound with fiber yarns, and the fiber yarns are embedded in the groove structure 211. The fiber yarn is wound to such an extent that the groove structure 211 is completely filled, and the outermost side in the winding thickness direction thereof is flush with the outermost side of the peripheral side portion of the bolt housing body 210. The strength of the connection between the bolt housing body 210 and the first and second reinforcing layers is reinforced by the fiber yarns.
Preferably, before winding the fiber yarn, the outer surface of the pre-buried bolt cover 200 needs to be sand blasted to improve the cleanliness and roughness of the outer surface thereof.
Fig. 6 is a schematic structural view of a bolt housing inserting block according to an embodiment of the present invention, and referring to fig. 2 and 6, the bolt housing inserting block 300 includes an interposed portion 310 and an inclined portion 320. The clamping portion 310 is clamped between two adjacent embedded bolt sleeves 200, and the height of the clamping portion is equal to the height of the embedded bolt sleeves 200. The inclined portion 320 is engaged with one end of the clamping portion 310, and the upper end surface of the inclined portion 320 gradually approaches the lower end surface of the inclined portion 320 along the direction away from the clamping portion 310. The bolt housing inserting block 300 may be a UD block in the prior art.
Fig. 7 is a schematic structural view of a wedge block according to an embodiment of the present invention, and referring to fig. 2, 3 and 7, an end portion of the wedge block 400 is inserted into the bolt sleeve tail portion 230, and an upper end surface of the wedge block 400 is flush with an upper end surface of the inclined portion 320. A first seal is interposed between the outer side of the end of the wedge 400 and the inner wall of the bolt housing tail 230. The rubber sealing ring can be selected as the first sealing member, the first sealing member can ensure the self-sealing of the inner space of the embedded bolt sleeve 200, and resin can be prevented from entering the embedded bolt sleeve 200 from the tail 230 of the bolt sleeve in the subsequent wind power blade root pouring molding procedure.
The embodiment also provides a wind power blade, which comprises a blade body and further comprises the blade root embedded part provided by the embodiment. The embedded part of the blade root is fixedly connected with the root of the blade body.
The embodiment also provides a manufacturing method of the wind power blade. The wind power blade provided by the embodiment is manufactured by adopting the wind power blade manufacturing method. The manufacturing method of the wind power blade comprises the following steps:
step S100, sequentially paving a first skin 110 and a first reinforcing layer in a wind power blade mould;
step S200, arranging a pre-buried bolt sleeve 200 on the first reinforcing layer, and fixing a bolt sleeve head 220 on a die flange;
step S300, arranging a bolt sleeve inserting block 300 between two adjacent embedded bolt sleeves 200;
step S400, arranging wedge blocks 400 at the tail parts 230 of the bolt sleeves;
step S500, paving a second reinforcing layer and a second skin 130 on one side of the embedded bolt sleeve 200, the bolt sleeve inserting block 300 and the wedge block 400, which is away from the first reinforcing layer, in sequence;
step S600, vacuum pouring to form a blade root embedded part;
and step S700, fixedly connecting the embedded part of the blade root to the root of the blade body.
Specifically, in step S200, a second seal is sandwiched between the outside of the bolt sleeve head 220 and the inside of the mold flange. The second sealing member can also be a rubber sealing ring in the prior art, so that resin is prevented from entering the embedded bolt sleeve 200 from the bolt sleeve head 220 in the subsequent wind power blade root pouring molding process.
More specifically, the plurality of embedded bolt sleeves 200 and the plurality of bolt sleeve interposed blocks 300 are arranged in a direction from the central axis position of the wind turbine blade mold to both sides.
More specifically, in step S600, a vacuum diversion system and a vacuum system are established, and resin is poured into the wind turbine blade mold by vacuum pouring, so as to form the blade root embedded part.
Optionally, in step S700, vacuum infusion of the blade body of the wind power blade may be performed while forming the blade root embedded part, so that the blade root embedded part is integrally formed at the root of the blade body.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. Blade root built-in fitting, its characterized in that includes:
a shell structure (100), the shell structure (100) being coaxially engaged to the root of the blade body;
the blade comprises a plurality of embedded bolt sleeves (200), wherein the plurality of embedded bolt sleeves (200) are sequentially arranged in the shell structure (100) at intervals along the circumferential direction of the root of the blade body;
the bolt sleeve inserting blocks (300) are arranged between every two adjacent embedded bolt sleeves (200), and the bolt sleeve inserting blocks (300) are arranged between every two adjacent embedded bolt sleeves;
the plurality of wedge blocks (400) are arranged, the plurality of wedge blocks (400) are in one-to-one correspondence with the plurality of embedded bolt sleeves (200), and are respectively abutted against the ends of the plurality of embedded bolt sleeves (200).
2. The blade root embedment of claim 1, wherein the embedment bolt sleeve (200) includes a bolt sleeve body (210), the bolt sleeve body (210) being of hollow cuboid construction.
3. The blade root embedment of claim 2, wherein the embedment bolt sleeve (200) further comprises a bolt sleeve head (220) and a bolt sleeve tail (230), the bolt sleeve head (220) and the bolt sleeve tail (230) are respectively fixedly connected to two ends of the bolt sleeve body (210), and the wedge block (400) is connected to the bolt sleeve tail (230).
4. A blade root embedment according to claim 3, characterized in that the end of the wedge block (400) is fixedly connected to the bolt sleeve tail (230), a first seal being clamped between the end of the wedge block (400) and the bolt sleeve tail (230).
5. The blade root embedment according to claim 2, characterized in that a groove structure (211) is provided on the outside of the bolt bushing body (210), the circumferential side of the bolt bushing body (210) being wound with a fiber yarn, which is embedded in the groove structure (211).
6. The embedded blade root part according to claim 1, wherein the bolt sleeve inserting block (300) comprises a clamping portion (310) and an inclined portion (320), the clamping portion (310) is clamped between two adjacent embedded bolt sleeves (200), the height of the clamping portion is equal to that of each embedded bolt sleeve (200), the inclined portion (320) is connected to one end of the clamping portion (310), and the upper end face of the inclined portion (320) is gradually close to the lower end face of the inclined portion (320) along the direction away from the clamping portion (310).
7. The blade root embedment of claim 6, wherein an upper end surface of the wedge block (400) is flush with an upper end surface of the angled portion (320).
8. The blade root embedded part according to claim 1, wherein the shell structure (100) comprises a first skin (110), a first reinforcing layer, a second skin (130) and a second reinforcing layer, the first skin (110) and the second skin (130) are respectively covered on the upper side and the lower side of the embedded bolt sleeves (200), the bolt sleeve inserting blocks (300) and the wedge-shaped blocks (400), the first reinforcing layer is paved on one side, opposite to the second skin (130), of the first skin (110), and the second reinforcing layer is paved on one side, opposite to the first skin (110), of the second skin (130).
9. Wind power blade, comprising a blade body, characterized in that it further comprises a blade root embedded part according to any one of claims 1-8, said blade root embedded part being fixedly connected to the root of said blade body.
10. A wind power blade manufacturing method according to claim 9, characterized in that the wind power blade manufactured by the wind power blade manufacturing method comprises the steps of:
s100, sequentially paving a first skin (110) and a first reinforcing layer in a wind power blade mould;
s200, arranging an embedded bolt sleeve (200) on the first reinforcing layer, and fixing a bolt sleeve head (220) on the die flange;
s300, arranging a bolt sleeve inserting block (300) between two adjacent embedded bolt sleeves (200);
s400, arranging a wedge block (400) at the tail part (230) of the bolt sleeve;
s500, paving a second reinforcing layer and a second skin (130) on one side, which is away from the first reinforcing layer, of the embedded bolt sleeve (200), the bolt sleeve inserting block (300) and the wedge-shaped block (400) in sequence;
s600, vacuum pouring to form a blade root embedded part;
s700, fixedly connecting the embedded part of the blade root to the root of the blade body.
CN202310117860.2A 2023-02-15 2023-02-15 Blade root embedded part, wind power blade and wind power blade manufacturing method Pending CN116357509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310117860.2A CN116357509A (en) 2023-02-15 2023-02-15 Blade root embedded part, wind power blade and wind power blade manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310117860.2A CN116357509A (en) 2023-02-15 2023-02-15 Blade root embedded part, wind power blade and wind power blade manufacturing method

Publications (1)

Publication Number Publication Date
CN116357509A true CN116357509A (en) 2023-06-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116696675A (en) * 2023-08-02 2023-09-05 新创碳谷集团有限公司 Blade root modularization mortise-tenon type connection structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116696675A (en) * 2023-08-02 2023-09-05 新创碳谷集团有限公司 Blade root modularization mortise-tenon type connection structure
CN116696675B (en) * 2023-08-02 2023-10-24 新创碳谷集团有限公司 Blade root modularization mortise-tenon type connection structure

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