WO2019119735A1 - Composant de liaison, fragment de tour en béton, moule, et tour et procédé de fabrication de la tour - Google Patents

Composant de liaison, fragment de tour en béton, moule, et tour et procédé de fabrication de la tour Download PDF

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Publication number
WO2019119735A1
WO2019119735A1 PCT/CN2018/090125 CN2018090125W WO2019119735A1 WO 2019119735 A1 WO2019119735 A1 WO 2019119735A1 CN 2018090125 W CN2018090125 W CN 2018090125W WO 2019119735 A1 WO2019119735 A1 WO 2019119735A1
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WO
WIPO (PCT)
Prior art keywords
tower
plate body
segment
plate
extending
Prior art date
Application number
PCT/CN2018/090125
Other languages
English (en)
Chinese (zh)
Inventor
左晶晶
郑帅泉
刘晓峰
Original Assignee
新疆金风科技股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by 新疆金风科技股份有限公司 filed Critical 新疆金风科技股份有限公司
Publication of WO2019119735A1 publication Critical patent/WO2019119735A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • 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
    • Y02E10/728—Onshore wind turbines
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present disclosure relates to the technical field of wind turbines, and in particular, to a connecting member, a concrete tower segment and a mold, a tower, and a manufacturing method thereof.
  • Precast concrete towers have been widely used to economically build large wind turbines. Due to transportation conditions and prefabricated processing conditions, a single large section tower is often assembled from multiple pieces on site. The assembled individual towers are then hoisted from bottom to top, resulting in a complete concrete tower.
  • the tower tube is divided into a plurality of annular tower sections, and each The tower sections are all pieced and prefabricated.
  • precast concrete tower sections are mostly made of pre-embedded steel sleeves and pre-embedded steel ropes.
  • pre-embedding the steel sleeves it is difficult to ensure that the sleeves are firmly fixed during the concrete pouring process.
  • the degree of alignment in the height and thickness direction of the tower wall makes it difficult to accurately position the pre-embedded sleeves in the two concrete tower sections; and the assembly of the precast concrete towers is difficult, and the longitudinal joints are connected within a few meters.
  • the sleeve needs to be accurately assembled during the lifting process, and the construction is difficult; and the side mold processing process is complicated, and multiple holes are required to pre-bury the threaded sleeve and the grouting hole.
  • the wall portion of the tower tube is a variable diameter structure in the axial direction, so that it is difficult to control the depth of the pre-embedded steel wire rope during the construction process,
  • the pre-embedded steel wire ropes cannot be overlapped; in addition, after the concrete pouring is completed, the wire rope sleeve drawing is difficult to construct, which may damage part of the concrete; and when the longitudinal joint is a pre-embedded steel wire rope, the structure has There are many corners and corners, which are easy to bump during the lifting process.
  • the high-strength grouting material will also affect the positioning of the steel rope sleeves at the longitudinal joints. Therefore, when the two tower sections are connected by the above-mentioned pre-embedded connection structure, since the two pre-embedded connection structures cannot be accurately positioned at the tower section, and the connection stability is poor, it may be Stress concentration at the joint causes the tower to fail or even break.
  • a connecting member, a precast concrete tower segment and a mold, a tower, and a manufacturing method thereof are provided, which can increase the strength of the longitudinal joint connection of the tower section and increase the deformation resistance of the tower section and The simplification simplifies the processing of the tower section, and at the same time simplifies the design difficulty of the mold, improves the processing efficiency of the tower section and reduces the cost.
  • a connecting member for a tower section comprising two or more concrete tower sections successively distributed along a circumferential direction thereof, the connecting member for connecting adjacent two The tower segments are divided, the tower segments are respectively formed with connecting end faces on both sides thereof in the extending direction thereof, and the connecting member comprises one or more connecting plate bodies, each connecting plate body including a direction extending in the longitudinal direction and perpendicular to the longitudinal direction a fixing portion and an extension portion successively distributed, wherein the fixing portion can be embedded in the tower segment in the extending direction of the tower segment to fix the connecting plate body to the tower segment, and the extending portion can be faced by the connecting end Extending away from the direction of the connecting end faces, the two adjacent tower segments can be mated to each other by respective extensions.
  • a concrete tower segment for assembling a wind turbine tower section comprising: a segment body extending in an arc along the extension of the tower section And the connecting member, the one or more connecting plates are connected to at least one end of the segment body in the circumferential direction of the tower section.
  • a tower comprising two or more annular tower sections arranged in series along an axial direction thereof, the tower section comprising two or more tower sections, two More than one tower segments are connected end to end in the circumferential direction through respective extensions.
  • a method for manufacturing a tower includes: providing two or more tower segments as described above; and connecting two or more tower segments through the extension portion in a circumferential direction Forming a tower section of the wind turbine; stacking more than two tower sections in the axial direction of the tower.
  • a mold for tower segmentation for fabricating the above-mentioned tower segment, the mold comprising: a base and a top plate; two curved plates, two curved plates The bodies are supported in parallel with each other between the base and the top plate to define an arcuate space through the two curved plates, the base and the top plate; two pre-support members, the two pre-support members are respectively located along the circumference of the curved space At both ends of the direction, a casting cavity matching the shape of the segment body is defined in the arc space, and the pre-support member can support the connecting member at the pouring cavity, so that each connecting plate body
  • the fixing portion is erected in the pouring cavity and extends in the extending direction of the pouring cavity, and at the same time, the extending portion protrudes toward the outside of the pouring cavity along the circumferential direction of the pouring cavity.
  • the connecting member includes an extending portion and a fixing portion, wherein the fixing portion can be embedded in the tower segment and extend The portion can project outwardly from the longitudinally extending end of the tower section, so that two adjacent tower sections can be connected to each other via extensions which each project outwardly.
  • the connecting plate body in the connecting member is embedded in the tower segment in the longitudinal direction, during the preparation of the previous tower segment, there are at least advantages including but not limited to the following: positioning of the connecting member It is simple and can simplify the installation process, and the depth of the embedded component is easy to control, and the process of embedding does not affect the structure of the tower segment itself.
  • the connecting member and the tower segment are longitudinally joined, so that the later connection stability is good and the deformation probability is low, thereby enhancing the bearing capacity of the longitudinal joint connection node of the tower segment, thereby improving the resistance of the tower segment. Deformability and integrity.
  • FIG. 1 is a schematic structural view of a connecting member according to an embodiment of the present disclosure
  • FIG. 2 is a top plan view of a tower segment according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural view of a tower section according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic view showing a state of use of a mold for making a tower segment according to an embodiment of the present disclosure
  • Figure 5 is an enlarged schematic view showing a partial structure of a portion A in Figure 4.
  • FIG. 6 is a cross-sectional structural view showing a first step of a method for fabricating a tower segment according to an embodiment of the present disclosure
  • FIG. 7 is a cross-sectional structural view showing a second step of a method of manufacturing a tower segment according to an embodiment of the present disclosure
  • FIG. 8 is a cross-sectional structural view showing a third step of a method of manufacturing a tower segment according to an embodiment of the present disclosure
  • FIG. 9 is a cross-sectional structural view showing a fourth step of a method of manufacturing a tower segment according to an embodiment of the present disclosure.
  • Figure 10 is a perspective schematic view of a connection state of two tower segments in accordance with one embodiment of the present disclosure.
  • 1-tower section 10-connecting plate body; 11-fixing portion; 111-first plate body; 111a-positioning hole; 112-second plate body; 113-reinforcing member; 12-extension portion; 12a-connection hole ;
  • 20-tower segment 21-segment body; 211-connection end face; 212-connection end face; 22- accommodating space;
  • the tower segment is the smallest constituent unit, and the tower segment is the connecting member provided in the embodiment of the present disclosure for connecting the two tower segments.
  • the towers are formed by longitudinal connection through a plurality of tower sections.
  • FIGS. 1 through 10 For a better understanding of the present disclosure, a method of making a connecting member, a tower segment, a tower, and a tower according to an embodiment of the present disclosure will be described below with reference to FIGS. 1 through 10.
  • FIG. 1 is a schematic structural view of a connecting member according to an embodiment of the present disclosure
  • FIG. 2 is a schematic top plan view of a tower segment 20 according to an embodiment of the present disclosure, wherein an application state of the connecting member is illustrated in FIG. .
  • the connecting member includes one or more connecting plate bodies 10, each connecting plate body 10 including a fixing portion 11 and an extending portion 12, wherein the fixing portion 11 can be embedded in the tower segment 20,
  • the connecting plate body 10 is fixed in the tower segment 20, and the extension portion can be extended from the tower segment 20 to the outside of the tower segment 20 so that the adjacent two tower segments 20 can pass through the respective
  • the connecting members are provided to be coupled to each other.
  • the connecting member of the embodiment of the present disclosure on the tower segment 20
  • the difficulty of pre-buriing the connecting member can be reduced, and the connection operation between the adjacent two tower segments 20 can be simplified, and two towers can be added at the same time.
  • the longitudinal seam of the segment 20 connects the bearing capacity of the node, thereby increasing the structural strength of the overall tower section 1, improving the resistance to deformation of the tower section 1, and further increasing the service life of the tower.
  • the connecting member comprises two connecting plate bodies 10, that is to say each of the tower segments 20 has two connecting end faces extending in the longitudinal direction, namely a connecting end face 211 and a connecting end face 212, Two connecting plate bodies 10 are respectively disposed at the connecting end surface 211 and the connecting end surface 212.
  • the connecting plate body 10 is made of a metal material, preferably with a strong Made of steel material with corrosion resistance and strong deformation resistance.
  • the fixing portion 11 and the extending portion 12 of the connecting plate body 10 are both plate bodies.
  • the fixing portion 11 includes a first plate body 111 and a second plate body 112, wherein the first plate body 111 is coupled between the extending portion 12 and the second plate body 112.
  • the first plate body 111 is a flat plate body extending in the longitudinal direction
  • the second plate body 112 is also a flat plate body extending in the longitudinal direction.
  • the first plate body 111 and the second plate body 112 are disposed to intersect, that is, the first plate body 111 and the second plate body 112 are at an angle connection.
  • the first plate body 111 and the second plate body 112 are joined by edges along the longitudinal direction of each other, and the angle between the joined first plate body 111 and the second plate body 112 is 90°.
  • the angle between the first plate body 111 and the second plate body 112 may also be an acute angle or an obtuse angle.
  • the fixing portion 11 and the clamping portion 11 can be increased to some extent.
  • the purpose of the joining force between the tower segments 20 is.
  • the fixing portion 11 needs to be embedded in the tower segment 20, it is preferable to roughen the surfaces of the first plate body 111 and the second plate body 112 so as to connect the fixing portion 11 to the tower segment 20 The joint force between the fixed portion 11 and the concrete structure of the tower segment 20 is increased.
  • the connecting plate body 10 further includes a reinforcing member 113 protrudingly disposed on the first plate body 111 or the second plate body 112 to embed the fixing portion 11 in the fixing portion 11
  • the reinforcing member 113 is a screw, and at least two screws are disposed on the connecting plate body 10.
  • a plurality of screw connection holes are uniformly disposed on the second plate body 112 in the longitudinal direction (ie, the extending direction of the second plate body 112), and the plurality of screws are respectively screwed to the plurality of screw connections through the respective ends having the thread structure.
  • the other end of the plurality of screws projects outwardly away from the second plate 112.
  • a plurality of screws are shown on the second plate body 112 and protrude in a direction away from the first plate body 111, but it is understood that, in other embodiments, it is disposed in the second
  • the plurality of screws on the plate body 112 can also protrude toward the first plate body 111, and the same can be achieved for increasing the contact area of the fixing portion 11 with the concrete structure of the tower segment 20.
  • the contact area with the concrete structure can be increased by the plurality of screws provided on the second plate body 112. Therefore, the connection strength between the fixed portion 11 and the tower segment 20 can be further increased.
  • the connecting plate body 10 in order to process the tower segment 20 during the casting, is positioned and fixed on the first plate body 111 in the longitudinal direction (ie, the first plate body 111 The extending direction is provided with more than one positioning hole 111a for positioning and supporting the connecting plate body 10 through the positioning structure before the tower segment 20 is poured.
  • the extending portion 12 is a plate body, and the extending portion 12 is also connected to the first plate body 111 through its longitudinally extending edge, in order to enhance the tensile force between the extending portion 12 and the first plate body 111.
  • the performance, the extension 12 and the first plate 111 are connected in the same plane, and preferably the fixing portion 11 and the extension 12 are formed in one piece.
  • the respective extended lengths of the fixing portion 11 and the extending portion 12 are not limited, and the extending lengths of the fixing portion 11 and the extending portion 12 may be the same or different, as long as the fixing portion 11 and the extending portion 12 are connected. After the tower section 20, the length of each tower section 20 in the longitudinal direction may not exceed.
  • the tower segments 20 are preferably mated to each other by means of a respective connecting member. Therefore, a plurality of connecting holes 12a are provided in the longitudinal direction on the extending portion 12 of each connecting plate body 10. Preferably, the plurality of connecting holes 12a are equally spaced along the extending direction of the extending portion 12 so that two adjacent towers are adjacent.
  • the segments 20 are capable of engaging the two extensions 12 opposite each other via a fastener. It will be understood, however, that embodiments of the present disclosure do not preclude the joining of opposing extensions 12 of two adjacent tower segments 20 by welding.
  • the embodiment of the present disclosure is not limited to the manner of connection between the first plate body 111 and the extension portion 12 and the second plate body 112.
  • the first plate 111 may also be joined to the extension 12 and the second plate 112 by welding or screwing.
  • the first plate body 111 in the fixing portion 11 may also be connected at a position of a longitudinal center line of the second plate body 112, and between the first plate body 111 and the second plate body 112.
  • the angle is also a right angle.
  • the second plate body 112 extends outward from the both sides of the first plate body 111 by a predetermined length, thereby also increasing the connection strength between the fixing portion 11 and the concrete structure of the tower segment 20.
  • the reinforcing member 113 is a screw, and thus is connected to the fixing portion 11 by a screw connection, but the embodiment of the present disclosure is not limited thereto.
  • the reinforcing member 113 may also be other structures that can be convexly disposed on the fixing portion 11.
  • the reinforcing member 113 may also be a cylinder or a plate body, and the number may be one or more. Then, the reinforcing member 113 can be connected to the fixing portion 11 by welding.
  • the reinforcement 113 may be disposed on the first plate body 111 and may protrude outward from the first plate body 111 in a direction parallel to the second plate body 112.
  • the fixing portion 11 and the extending portion 12 are all plate bodies, but in other modified embodiments, the fixing portion 11 and the extending portion 12 may be other frames or a block structure, but It should be noted that the structure of the fixing portion 11 needs to be able to be embedded in the tower segment 20, and the structure of the extending portion 12 needs to be able to be connected to the adjacent tower segments 20.
  • FIG. 3 is a schematic structural view of a tower section 1 according to an embodiment of the present disclosure.
  • a tower of a wind power generator is further provided.
  • the whole of the tower is not shown, only one component of the tower is shown.
  • the single tower section 1 is mostly a hollow truncated cone structure, that is, the longitudinal section of the tower section 1 is trapezoidal, and the extension direction of the tower section 1 is the extension of the tower formed by the plurality of tower sections 1.
  • the direction (the same longitudinal direction), the circumferential direction of the above-mentioned tower section 1, that is, the direction around the outer surface of the tower section 1 is one round.
  • the determination of the various directions of this embodiment is performed after assembling the plurality of tower segments 20 into a tower, that is, the radial, axial and longitudinal directions (i.e., towers or The direction in which the tower segments 20 extend) refers to the reference direction of the tower (same tower section 1).
  • the single tower section 1 includes two tower sections 20 of the same structural size, that is, the size of the divided bodies 21 of the two tower sections 20 are equal.
  • the single tower section 1 may also include three or four tower sections 20 of equal size.
  • more tower sections 20 of the same size may be included, and the disclosure is not Make restrictions.
  • the concrete tower has strong compressive performance, good waterproof and anti-corrosion performance, long service life, etc., it has been widely used, but the seismic performance of the concrete tower and the stability of the overall structure mainly depend on The quality of the seams of the individual tower segments 20 . Therefore, it is first necessary to increase the structural strength of the individual tower sections 1, in order to increase the strength of the tower section 1, i.e. to increase the connection stability of the two connected tower sections 20, each tower section 20 is along the tower The connecting member described in the above embodiment is embedded in the extending direction of the segment 1.
  • the tower segment 20 includes a segment body 21 and a connecting member, wherein the segment body 21 is curved and extends in the extending direction of the tower section 1, and the connecting member includes one or more connecting plates 10, and the connecting member is connected to at least one end portion of the segment body 21 in the circumferential direction (the circumferential direction of the same column section 1).
  • each of the connecting members of the tower segment 20 includes two connecting plates 10, that is, each of the circumferential ends of the tower segment 20 is provided with The connecting plate body 10 described in the two above embodiments.
  • the connecting member of the tower segment 20 has one connecting plate body 10 or has three or more connecting plate bodies 10 (of course, the tower segment 20 is required to have a sufficient thickness), the connecting plate body 10 is connected.
  • the arrangement manner is similar to that of the connecting plate body 10 in the two connecting plate bodies 10, and therefore will not be described again.
  • the both ends of the segment body 21 in the circumferential direction respectively have a connection end surface 211 and a connection end surface 212 for connection with the adjacent segment body 21.
  • the connecting member includes two connecting plate bodies 10
  • the two connecting plate bodies 10 are embedded in parallel with each other at the connecting end surface 211 of the tower segment 20, that is, two connections.
  • the plate bodies 10 are connected to the segment body 21 in such a manner as to face each other in the radial direction.
  • each of the connecting plate bodies 10 is embedded in the segment body 21, and the fixing portion 11 extends in the extending direction of the segment body 21, so that the fixing portion 11 can be closely related to the concrete structure of the segment body 21.
  • the extension portion 12 projects outwardly from the connecting end surface 211 and also extends in the extending direction of the segment body 21, and the extension portion 12 is perpendicular to the connection end surface 211 (as shown in FIG. 2) so that two adjacent tower segments are segmented. 20 (i.e., the tower segments 20 on the left side and in the right side in Fig. 3) can be connected to each other by extensions 12 each extending from the joint end surface 211.
  • the extending direction of the connecting plate body 10 and the extending direction of the segment body 21 are not necessarily identical, and the extending direction of the fixing portion 11 and the extending portion 12 and the segment body 21 are not identical.
  • a certain error can also be allowed between the extending directions.
  • the second plates 112 of the two connecting plate bodies 10 disposed at the connecting end faces 211 are embedded in the segment body 21 toward each other, and the extensions 12 of the two connecting plate bodies 10 are connected by The end faces 211 extend equally in length, but embodiments of the present disclosure are not limited thereto.
  • the segment body 21 has a sufficient thickness, as long as the two connection plates 10 can be buried in the segment body 21 at the same time, the two extension portions 12 can also be embedded in the segment body opposite to each other. 21 in.
  • the embodiment of the present disclosure is not limited.
  • the extension portions 12 of the two connecting plate bodies 10 are The length of the extension may also differ, in which case the length of the extension 12 of two adjacent tower segments 20 needs to be adapted to ensure the cylinder of the tower section 1 formed by the two tower segments 20. degree.
  • the connecting portion 12 of the connecting plate 10 is provided with a connecting hole 12a.
  • the interconnected extensions 12 need to be staggered from one another.
  • the two extensions 12 of the tower section 20 on the left side are spaced apart by a smaller distance than the two extensions 12 of the tower section 20 on the right side, such that When the two adjacent tower segments 20 are connected to each other, the two extending portions 12 having a small separation distance can be accommodated between the two extending portions 12 having a large separation distance, so that the four extending portions 12 are fitted two by two.
  • the fasteners 38 can be used to securely connect the two extension portions 12 that are attached to each other, and finally form the tower section 1.
  • the connecting plate body 10 in the connecting member is embedded in the tower segment 20 in the longitudinal direction, the positioning of the connecting member is simple in the preparation process of the previous tower segment 20, which simplifies the mounting process and is connected.
  • the depth of the embedded component is easy to control, and the process of burying does not affect the tower segment 20 itself.
  • the connecting member and the segment body 21 are continuously joined in the longitudinal direction, so that the later connection stability is good and the deformation probability is low, thereby enhancing the bearing capacity of the longitudinal joint connection node of the tower segment 20, that is, the tower is improved.
  • the assembled tower can withstand the shearing force and tensile force during the operation of the wind turbine through the high-strength bolt structure, fully exerting the mechanical properties of different materials and increasing the service life of the tower.
  • FIG. 4 is a schematic view showing a state of use of a mold 30 for fabricating a tower section 20 according to an embodiment of the present disclosure
  • FIG. 5 is an enlarged partial view of a portion A of FIG.
  • a mold 30 for making a tower of course, to more clearly illustrate the connecting members on the side of the tower section 20
  • the mold 30 includes a base (not shown), a top plate (not shown), a curved plate body 31, a curved plate body 32, and two pre-support members.
  • the curved plate body 31 and the curved plate body 32 are both placed on the base, and the curved plate body 31 is located outside the curved plate body 32, and the top plate is located at the curved plate body 31 and the curved plate body 32.
  • the top ends are connected to the curved plate body 31 and the curved plate body 32, respectively.
  • an arc-shaped space is formed between the curved plate body 31 and the curved plate body 32, and the two pre-support members are respectively located at both ends of the curved space in the circumferential direction to respectively connect the two connecting members of the tower segment 20
  • the support is carried out while the pouring chamber 33 matching the segment body 21 is defined in the curved space by the two pre-supports.
  • the fixing portion 11 of the connecting plate body 10 can be held upright in the pouring chamber 33 by the pre-support member, and the extending portion 12 can be projected outward from the pouring chamber 33.
  • the circumferential length of the curved plate body 31 and the curved plate body 32 needs to be determined according to the circumferential length of the specific tower segment 20.
  • the pre-support member includes a shim plate (the structure of the shim plate 34 and the shim plate 35 are the same) and the limit side plate 36, but the pre-support member needs to be specifically arranged in two cases.
  • the connecting member provided at both end portions of each of the tower segments 20 includes a connecting plate body 10 (not shown).
  • the pre-support member includes a backing plate 34 and a limiting side plate 36, wherein the backing plate 34 is supported between the extending portion 12 of the connecting plate body 10 and the curved plate body 32 located inside, and the limiting side plate 36 is supported between the extending portion 12 of the connecting plate body 10 and the curved plate body 31 located outside.
  • the connecting plate body 10 can be respectively spaced apart from the two curved plate bodies by a predetermined distance, and the fixing portion 11 of the connecting plate body 10 is located in the pouring cavity 33, and the extending portion 12 protrudes outside the pouring cavity 33. That is to say, the connecting plate body 10 can be held between the two curved plate bodies at a predetermined interval by the pre-support.
  • the connecting plate body 10 can be connected to any one of the two curved plate bodies.
  • the connecting portion 12a is provided in the longitudinal direction of the extending portion 12 of the connecting plate body 10, correspondingly, the backing plate 34 and the curved plate body 31 are also provided with through holes, so that fasteners can be used. 38, the extension portion 12 of the connection plate body 10, the backing plate 34, and the curved plate body 31 are fixedly connected.
  • the connecting members provided at both end portions of each of the tower segments 20 include two connecting plates 10.
  • the pre-support member corresponding to the two connecting plate bodies 10 includes two pads, that is, the pad 34 and the pad 35, and also includes a limiting side plate 36.
  • the backing plate 34 is supported between the extension 12 of one of the connecting plate bodies 10 and the curved plate body 31, and the backing plate 35 is supported by the extending portion 12 and the arc of the other connecting plate body 10.
  • the limiting side plates 36 are supported between the respective extensions 12 of the two connecting plate bodies 10.
  • the two connecting plate bodies 10 can be respectively spaced apart from the two curved plate bodies by a predetermined distance, and the respective fixing portions 11 of the two connecting plate bodies 10 are located in the pouring cavity 33, and the extending portion 12 is extended from The pouring chamber 33 is outside. That is to say, the two connecting plate bodies 10 can be parallel to each other by the pre-support and held between the two curved plate bodies at predetermined intervals.
  • the mold 30 further includes a positioning post 37 for pre-positioning the web 10 in the pouring chamber 33.
  • positioning holes are correspondingly formed on the first plate body 111 of each of the curved plate body 31, the curved plate body 32 and the two connecting plate bodies 10, when the curved plate body 31 and the curved plate body 32 are After the erected position is placed on the base, the positioning plate 37 can be respectively passed through the corresponding positioning holes 111a on the curved plate body 31, the curved plate body 32 and the first plate body 111, thereby positioning the connecting plate body 10.
  • the pouring cavity 33 is defined by the curved plate body 31 and the curved plate body 32.
  • the positioning post 37 and the corresponding positioning holes need not be provided when the connecting plate body 10 can be accurately positioned by the base or other auxiliary structure.
  • the connecting portion 12a is provided in the longitudinal direction of the extending portion 12 of the connecting plate body 10, correspondingly, the backing plate 34 and the curved plate body 31 are also provided with through holes, so that fastening can be employed.
  • the piece is fixedly connected to the extending portion 12 of the connecting plate body 10, the backing plate 34, and the curved plate body 31.
  • the manufacturing efficiency of the tower segment 20 can be improved by the mold 30, and the structure of the mold 30 is simple and easy to assemble, so that the manufacturing cost of the entire tower can be reduced, and the assembly process of the tower can be simplified.
  • the thickness of the pouring cavity 33 formed by the curved plate body 31 and the curved plate body 32 can be appropriately set according to the arrangement manner of the connecting plate body 10 in practical applications, it can be ensured that the connecting portion of the connecting plate body 10 has a sufficient thickness.
  • the concrete protective layer can increase the connection stability of the connecting member and ensure the structural strength of the tower.
  • the supporting plate 10 to support the connecting plate body 10 the extending portions 12 of the two tower segments 20 to be connected can be quickly and easily displaced from each other in the radial direction to ensure the two tower segments 20
  • the connecting components enable precise assembly.
  • the manner in which the pre-supporting member supports the connecting plate body 10 in the mold 30 can improve the flexibility of the embedded connecting member, that is, the connecting member can be relative to the segment when embedded in the segment body 21.
  • the body 21 is positionally adjusted in three dimensions. First, the height of the connecting member can be adjusted according to the height of the tower section 1 (the connecting member does not have to be the same as the extension length of the tower section 1); secondly, the distance of the connecting member in the wall thickness direction of the tower section 1 can be determined according to The wall thickness of the tower section 1 is adjusted; again, the pre-buried depth of the connecting member in the tower section 1 can be adjusted according to actual needs, as long as the connection plate body 10 can be stably connected to the segment body 21.
  • FIG. 6 is a cross-sectional structural view showing a first step of a method for fabricating a tower segment according to an embodiment of the present disclosure
  • FIG. 7 is a cross-sectional structural view showing a second step of a method for fabricating a tower segment according to an embodiment of the present disclosure
  • 8 is a cross-sectional structural view showing a third step of a method for fabricating a tower segment according to an embodiment of the present disclosure
  • FIG. 9 is a cross-sectional structural view showing a fourth step of a method for fabricating a tower segment according to an embodiment of the present disclosure
  • Figure 10 is a perspective schematic view of the connection state of two tower segments 20 in accordance with one embodiment of the present disclosure.
  • the method for fabricating the tower i.e., the concrete tower
  • the method for fabricating the precast concrete tower mainly includes the following three steps.
  • step S101 the tower segment 20 described in the above embodiment is provided.
  • each of the molds 30 is provided with a pre-support member at both ends of the respective circumferential directions.
  • the pre-supporting member includes two pads, that is, a backing plate 34 and a backing plate 35, and a limiting side plate 36, wherein the backing plate 34 and the backing plate 35 in each of the pre-supporting members respectively abut the respective corresponding curved plate bodies 31 and curved plates in the radial direction
  • the end of the body 32 is positioned and secured by fasteners 38.
  • the limiting side plate 36 is located between the backing plate 34 and the backing plate 35 and spaced apart from the backing plate 34 and the backing plate 35 by a predetermined distance, respectively, so as to accommodate the connecting plate body 10 by the predetermined distance.
  • the connecting members of the two tower segments 20 are supported by the above-described pre-support members at the circumferential end portions of the pouring chamber 33 as shown in FIG.
  • one of the two connecting plate bodies 10 of each connecting member is interposed between the limiting side plate 36 and the backing plate 34, and the other of the two connecting plate bodies 10 is inserted into the limit.
  • the connecting plate body 10 is fixed between the backing plate and the curved plate body by fasteners 38, respectively, so that the respective fixing portions of the two connecting plate bodies 10 are supported by the pre-supporting members.
  • 11 is located in the pouring chamber 33, and the extension 12 projects outwardly from the pouring chamber 33.
  • the thickness of the backing plate 34 and the backing plate 35 in the pre-support members can be set according to actual needs.
  • the thicknesses of the two pads of the respective pre-supports of the two molds 30 are set to be different, for example, the thickness of the backing plate 34 can be set smaller than the thickness of the backing plate 35, in FIG.
  • the backing plate 34 is abutted against the curved plate body 32 located on the inner side
  • the backing plate 35 is abutted against the curved plate body 31 located on the outer side; correspondingly, in the right side in FIG.
  • the backing plate 34 is placed against the curved plate body 31 located on the outer side, and the backing plate 35 is placed against the curved plate body 32 located on the inner side.
  • the two connecting plate bodies 10 supported in the left side mold 30 and the two connecting plate bodies 10 supported on the right side are radially displaced from each other for subsequent connection.
  • the manner in which the connecting members of the two tower segments 20 in FIG. 8 cooperate with each other may be replaced by the two extensions 12 of the left side tower segment 20 being located on the right side of the tower.
  • the first pouring step is performed, that is, the concrete is separately poured into the two pouring chambers 33, as shown in FIG.
  • the concrete is poured into the two pouring chambers 33 through the corresponding pouring openings, until the two pouring chambers 33 are filled, the watering is stopped, and the fixing portion 11 of the connecting plate body 10 is buried in the tower segment 20 In the concrete structure, the connecting plate body 10 is thus fixed at the circumferential end position of the tower segment 20.
  • step S102 two or more tower segments 20 are connected end to end in the circumferential direction through the extension portion to form the tower section 1 of the wind turbine.
  • step S101 two towers 20 having the same structure and the same size have been produced.
  • the mold 30 is removed and separated (ie, divided).
  • the sheet body 21 and the connecting member connected to the segment body 21) the tower segments 20 further splicing the two tower segments 20 to each other to form the tower section 1.
  • the respective connecting members of the two tower segments 20 i.e., two connecting members that are opposite each other
  • the connecting plates 10 of the two tower segments 20 are respectively staggered from each other in the radial direction. Therefore, the connecting plate bodies 10 of the two connecting members that are opposite to each other can be attached in a radial direction in a one-to-one correspondence, and the connecting holes 12a provided on the two connecting connecting plate bodies 10 via the fasteners 38 are provided by the fasteners 38.
  • the two connecting plate bodies 10 are fixedly connected, so that the two tower segments 20 can be connected end to end in the circumferential direction to form the tower section 1.
  • each tower section 1 it is also necessary to perform a second casting step, that is, the accommodation formed by two interconnecting connecting members between adjacent two tower segments 20.
  • the space 22 is poured with concrete.
  • the two adjacent tower segments 20 are connected by a connecting member, after the two connecting members are joined, since the four connecting plate bodies 10 are attached to each other and fixedly connected, they are located at the innermost side.
  • the two extensions 12 and the two connecting end faces 211 of each of the two segment bodies 21 (of course, at the other side of the two adjacent tower segments 20, the two extensions located at the innermost side are passed 12 and the two connecting end faces 212 of the two segment bodies 21 each form an accommodating space 22 extending in the longitudinal direction.
  • the accommodating space 22 for pouring (that is, enclosing a separate pouring cavity by two interconnecting connecting members) can simplify the manufacturing process of the tower section 1 and can improve the production efficiency without separately providing other auxiliary dies. At the same time, it can also reduce costs.
  • annular tower sections 1 can be made in accordance with the method in step S102.
  • step S103 two or more tower sections 1 are sequentially stacked in the axial direction of the tower.
  • the final step needs to stack the plurality of tower sections 1 in the axial direction of the tower to complete the assembly of the tower.
  • the same manner as in the prior art can be used here, and therefore will not be described again.

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Abstract

L'invention concerne un composant de liaison, un fragment de tour en béton, un moule, une tour et un procédé de fabrication de la tour. Le composant de liaison est utilisé pour une section de tour (1) ; la section de tour (1) comprend plus de deux fragments de tour en béton (20) répartis successivement dans la direction circonférentielle de la section de tour ; le composant de liaison est utilisé pour relier deux fragments de tour adjacents (20) ; des surfaces d'extrémité de liaison sont formées dans la direction d'extension des fragments de tour (20) sur les deux côtés respectivement; le composant de liaison comprend plus d'un corps de plaque de liaison (10), chaque corps de plaque de liaison (10) comprenant une partie fixe (11) et une partie d'extension (12), toutes deux s'étendant dans la direction longitudinale et étant réparties de manière séquentielle dans une direction perpendiculaire à la direction longitudinale ; les parties fixes (11) peuvent être incorporées dans les fragments de tour (20) dans la direction d'extension des fragments de tour ; les parties d'extension (12) peuvent s'étendre hors des surfaces d'extrémité de liaison vers la direction s'éloignant des surfaces d'extrémité de liaison, de telle sorte que les deux fragments de tour adjacents (20) puissent être reliés de façon ajustée l'un à l'autre au moyen des parties d'extension respectives des deux fragments de tour adjacents. Par conséquent, la force de liaison d'une articulation longitudinale de la section de tour (1) peut être améliorée ; le processus d'usinage de la section de tour (1) peut être simplifié ; pendant ce temps, la difficulté de conception du moule peut être simplifiée, et l'efficacité d'usinage de la section de tour peut être améliorée.
PCT/CN2018/090125 2017-12-20 2018-06-06 Composant de liaison, fragment de tour en béton, moule, et tour et procédé de fabrication de la tour WO2019119735A1 (fr)

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CN201711386610.X 2017-12-20
CN201711386610.XA CN108167125B (zh) 2017-12-20 2017-12-20 连接构件、混凝土塔筒分片及模具、塔筒及其制作方法

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CN109139386B (zh) * 2018-09-30 2019-08-23 北京金风科创风电设备有限公司 塔筒段、塔筒、分割方法及风力发电机组
CN211446990U (zh) * 2019-01-18 2020-09-08 深圳国金电力新能设计院有限公司 塔筒基础的顶板构件、顶板、塔筒基础
DK3800348T3 (da) * 2019-10-01 2023-11-20 Siemens Gamesa Renewable Energy As Modulværktøj
CN217552707U (zh) * 2020-12-28 2022-10-11 北京天杉高科风电科技有限责任公司 塔筒分片的模具
CN114012866B (zh) * 2021-11-16 2023-01-31 上海电气风电集团股份有限公司 可调节式多边形混塔塔筒模板以及塔筒管片制作方法
WO2024140786A1 (fr) * 2022-12-28 2024-07-04 深圳国金电力新能设计院有限公司 Section de tube préfabriquée de tour d'éolienne assemblée et tour d'éolienne assemblée

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CN205260223U (zh) * 2015-12-29 2016-05-25 北京金风科创风电设备有限公司 风力发电机组的塔筒
CN106438214A (zh) * 2016-10-08 2017-02-22 霍尔果斯新国金新能源科技有限公司 用于风力发电机的塔筒

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CN107076122A (zh) * 2014-10-06 2017-08-18 维斯塔斯风力系统有限公司 铰链式塔架节段及运输方法
WO2017013291A1 (fr) * 2015-07-17 2017-01-26 Ventus Windtowers, S.L. Tour modulaire
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