WO2019119735A1

WO2019119735A1 - Connecting component, concrete tower fragment and mold, and tower and manufacturing method for the tower

Info

Publication number: WO2019119735A1
Application number: PCT/CN2018/090125
Authority: WO
Inventors: 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: 2017-12-20
Filing date: 2018-06-06
Publication date: 2019-06-27
Also published as: CN108167125B; CN108167125A

Abstract

A connecting component, a concrete tower fragment and a mold, and a tower and a manufacturing method for the tower. The connecting component is used for a tower section (1); the tower section (1) comprises more than two concrete tower fragments (20) successively distributed in the circumferential direction of the tower section; the connecting component is used to connect two adjacent tower fragments (20); connecting end surfaces are formed in the extending direction of the tower fragments (20) on the two sides respectively; the connecting component comprises more than one connecting plate body (10), each connecting plate body (10) comprising a fixed portion (11) and an extending portion (12), both of which extend in the longitudinal direction and are sequentially distributed in a direction perpendicular to the longitudinal direction; the fixed portions (11) can be embedded in the tower fragments (20) in the extending direction of the tower fragments; the extending portions (12) can extend out from the connecting end surfaces to the direction away from the connecting end surfaces, so that the two adjacent tower fragments (20) can be fittedly connected with each other by means of the respective extending portions of the two adjacent tower fragments. Therefore, the connection strength of a longitudinal joint of the tower section (1) can be improved; the machining process of the tower section (1) can be simplified; meanwhile, the design difficulty of the mold can be simplified, and the machining efficiency of the tower section can be improved.

Description

Connecting member, concrete tower segment and mold, tower tube and manufacturing method thereof

Technical field

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.

Background technique

As the efficiency of wind turbines increases, the blades of the wind turbines become longer and longer, and the height and cross-sectional dimensions of the matched wind turbine towers are also increasing. Due to the high cost and difficult transportation, the steel tower is difficult to meet the construction requirements of large-section and high-tower. 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.

In the concrete tower structure disclosed in the related art, due to the large cross-sectional size of the tower tube, which is limited by the transportation and prefabrication processing equipment, it needs to be prefabricated and assembled on site by means of a splitting method, that is, the tower tube is divided into a plurality of annular tower sections, and each The tower sections are all pieced and prefabricated.

At present, the longitudinal joints of precast concrete tower sections are mostly made of pre-embedded steel sleeves and pre-embedded steel ropes. However, for the way of 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.

For the way of pre-embeding the steel wire rope, since the wall portion of the tower tube is a variable diameter structure in the axial direction, the depth of the pre-embedded steel wire rope varies along the height of the tower, so that it is difficult to control the depth of the pre-embedded steel wire rope during the construction process, In the case where two towers are spliced together, 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. In addition, when the two precast concrete towers are paired, 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.

Therefore, there is a need for a new connecting member, a precast concrete tower segment and a mold, a tower, and a method of making the same.

Summary of the invention

According to an embodiment of the present disclosure, 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.

According to an aspect of the present disclosure, there is provided a connecting member for a tower section, the 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.

According to another aspect of the present disclosure, there is also provided a concrete tower segment for assembling a wind turbine tower section, the 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.

According to still another aspect of the present disclosure, there is also provided 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.

According to still another aspect of the present disclosure, 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.

According to still another aspect of the present disclosure, there is also provided 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.

In summary, the connecting member, the concrete tower segment and the mold, the tower and the manufacturing method thereof are provided, wherein 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. Since 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. In addition, 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.

DRAWINGS

The present disclosure can be better understood from the following description of the embodiments of the present disclosure, in which:

Other features, objects, and advantages of the present invention will become more apparent from the description of the appended claims.

1 is a schematic structural view of a connecting member according to an embodiment of the present disclosure;

2 is a top plan view of a tower segment according to an embodiment of the present disclosure;

3 is a schematic structural view of a tower section according to an embodiment of the present disclosure;

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;

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;

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;

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;

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.

Description of the reference signs:

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;

30-mold; 31-arc plate; 32-arc plate; 33-casting cavity; 34-pad; 35-pad; 36-limit side plate; 37-positioning post; 38-fastener .

Detailed ways

Features and exemplary embodiments of various aspects of the disclosure are described in detail below. In the following detailed description, numerous specific details are set forth However, it will be apparent to those skilled in the art that the present disclosure may be practiced without some of these details. The description of the embodiments is merely intended to provide a better understanding of the disclosure. In the drawings and the following description, at least some of the structures and techniques are not shown in order to avoid unnecessary obscuring of the present disclosure; and, for clarity, the size of a portion of the structure may be exaggerated. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments.

The orientations appearing in the following description are all the directions shown in the drawings and are not intended to limit the specific structure of the disclosure. In the description of the present disclosure, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be, for example, a fixed connection or a Disassemble the connections, or connect them integrally; they can be connected directly or indirectly. The specific meaning of the above terms in the present disclosure will be understood by those of ordinary skill in the art, as appropriate.

For a widely used precast concrete tower segment, 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. In order to join the plurality of tower segments into tower sections, the towers are formed by longitudinal connection through a plurality of tower sections. By providing the connecting member on the tower segment, the connection operation of the tower segment can be simplified, and the tower deformation resistance can be increased, and the splicing efficiency of the tower segment can be accelerated.

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.

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. . As shown in FIGS. 1 and 2, 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.

By providing 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.

According to an embodiment of the present disclosure, in particular, 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. In order to ensure the connection strength between the connecting plate body 10 and the tower segment 20, and at the same time, the two adjacent tower segments 20 can be effectively connected. 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.

According to an exemplary embodiment of the present disclosure, the fixing portion 11 and the extending portion 12 of the connecting plate body 10 are both plate bodies. Specifically, 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, and similarly, the second plate body 112 is also a flat plate body extending in the longitudinal direction.

In order to increase the connection strength between the fixing portion 11 and the tower segment 20, 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. Illustratively, 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°. Thus, when the fixing portion 11 is embedded in the concrete structure of the tower segment 20, the concrete structure can provide an effective stopping action for the second plate body 112, so that the entire fixing portion 11 and the tower segment 20 can be increased. The stability of the connection between them prevents the fixing portion 11 from being detached from the concrete structure of the tower segment 20.

Of course, in other optional embodiments, the angle between the first plate body 111 and the second plate body 112 may also be an acute angle or an obtuse angle. In this case, 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.

In addition, since 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.

According to an optional embodiment of the present disclosure, 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 After the tower section 20 is in the middle, the connection reliability between the fixed portion 11 and the tower segment 20 is further improved. Specifically, in the present embodiment, the reinforcing member 113 is a screw, and at least two screws are disposed on the connecting plate body 10. Correspondingly, 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 (i.e., the end with the screw cap) projects outwardly away from the second plate 112. Of course, 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.

Thus, when the first plate body 111 and the second plate body 112 are collectively embedded in 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.

According to an optional embodiment of the present disclosure, in order to process the tower segment 20 during the casting, the connecting plate body 10 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.

As described in the foregoing embodiment, 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. In addition, 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.

In order to simplify the joining operation between the two tower segments 20 and to improve the connection stability between the two tower segments 20, 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.

In addition, 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. In other alternative embodiments, the first plate 111 may also be joined to the extension 12 and the second plate 112 by welding or screwing.

According to a variant embodiment of the present disclosure, 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. At this time, 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.

In the above embodiment, 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. In other modified embodiments, the reinforcing member 113 may also be other structures that can be convexly disposed on the fixing portion 11. For example, 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. In addition, in other alternative embodiments, 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.

In addition, in the above embodiment, 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.

3 is a schematic structural view of a tower section 1 according to an embodiment of the present disclosure. As shown in FIG. 2 and FIG. 3, according to an embodiment of the present disclosure, a tower of a wind power generator is further provided. Of course, the whole of the tower is not shown, only one component of the tower is shown. , that is, the tower section 1, a plurality of tower sections 1 are stacked in the axial direction to form a tower. It should be noted that 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).

In a practical application, 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. Of course, the single tower section 1 may also include three or four tower sections 20 of equal size. In addition, more tower sections 20 of the same size may be included, and the disclosure is not Make restrictions. By arranging the tower of the wind turbine into a piece-like structure, it is possible to solve the problem that the large-diameter tower is limited in land transportation, and the height of the tower can be effectively increased.

Because 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.

According to an embodiment of the present disclosure, 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). In the present embodiment, it is shown that 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. However, it can be understood that when 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.

According to the embodiment of the present disclosure, 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. Taking the connecting member provided on the connecting end surface 211 as an example, since 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. Specifically, the fixing portion 11 of 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. Combine. 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. Of course, when the connecting plate body 10 is connected to the segment body 21, 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.

In the present embodiment, 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. In a specific implementation, when 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. In addition, for the length of the extension portion 12 of the two connecting plate bodies 10 protruding from the connecting end surface 211, the embodiment of the present disclosure is not limited. In a specific implementation, 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.

Thereby, the two adjacent tower sections 1 are fixed by the cooperation between the connecting members. According to the above embodiment, 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. Illustratively, as shown in FIG. 3, 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. Thus, 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.

Since 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.

In addition, 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 deformation resistance of the segment 20 structure. Therefore, the adjacent two tower segments 20 are fixed by the cooperation of the connecting members, which not only has a simple structure, but also can improve the structural stability of the tower section 1, thereby improving the seismic performance of the longitudinal joint of the tower, and Effectively save the installation strength of the construction site and improve the assembly efficiency of the tower. Further, 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.

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; and FIG. 5 is an enlarged partial view of a portion A of FIG. As shown in Figures 4 and 5, in accordance with another embodiment of the present disclosure, there is also provided a mold 30 for making a tower, of course, to more clearly illustrate the connecting members on the side of the tower section 20 In the manner of arrangement, only half of the structure of the mold 30 of the entire tower segment 20 is illustrated in FIG. According to an embodiment of the present disclosure, 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.

Specifically, 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. Thereby, 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. Of course, in actual application, 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.

According to an exemplary embodiment of the present disclosure, 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.

In the first case, 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. Thereby, 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.

Of course, when only one connecting plate body 10 is included in the connecting member, the connecting plate body 10 can be connected to any one of the two curved plate bodies. In addition, in the present embodiment, since 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.

In the second case, as shown in FIGS. 4 and 5, the connecting members provided at both end portions of each of the tower segments 20 include two connecting plates 10. Then, 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. Similarly to the first case, 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. Between the plate bodies 32, the limiting side plates 36 are supported between the respective extensions 12 of the two connecting plate bodies 10. Thereby, 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.

In accordance with an alternative embodiment of the present disclosure, in order to simplify the assembly process of the mold 30, the mold 30 further includes a positioning post 37 for pre-positioning the web 10 in the pouring chamber 33. Specifically, 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. And the pouring cavity 33 is defined by the curved plate body 31 and the curved plate body 32. Of course, in other alternative embodiments, 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.

Similarly, in the present embodiment, since 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.

Thereby, 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. Since 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. And by providing 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.

In addition, 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.

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; and 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) will be described below with reference to Figs. 6 to 10. According to one embodiment of the present disclosure, the method for fabricating the precast concrete tower mainly includes the following three steps.

In step S101, the tower segment 20 described in the above embodiment is provided.

In this step, it is necessary to make two tower segments 20 using the mold 30 mentioned in the above embodiment, exemplarily, taking the case of each of the annular tower segments 1 from two tower segments 20 as an example. For the description, the specific production process is as follows.

First, it is necessary to provide the mold 30 described in the above embodiment, and the mold 30 is previously mounted as shown in FIG. Further, in order to improve the production efficiency of the tower section 20, it is preferable to provide two sets of the above-described molds 30 at the same time so that the two tower sections 20 to be joined into the tower section 1 can be simultaneously produced. Specifically, two curved plates of the two molds 30, that is, the curved plate body 31 and the curved plate body 32 are supported on the base to form between the curved plate body 31 and the curved plate body 32. The cavity 33 is poured. At this time, the pouring chambers 33 of the two molds 30 are formed in a ring shape with respect to each other (of course, only a part of the structure of the two molds 30 is illustrated in FIGS. 6 to 9 for convenience of understanding and explanation). At the same time, each of the molds 30 is provided with a pre-support member at both ends of the respective circumferential directions. Since the connecting member of the tower barrel 20 includes two connecting plates 10, 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.

Next, 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. Specifically, 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. Between the side plate 36 and the backing plate 35, 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.

Further, in order to enable the connecting plate bodies 10 in the respective connecting members of the two tower segments 20 to be displaced from each other in the radial direction, the thickness of the backing plate 34 and the backing plate 35 in the pre-support members can be set according to actual needs. Illustratively, in the present embodiment, 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. In the mold 30 located on the left side, the backing plate 34 is abutted against the curved plate body 32 located on the inner side, and the backing plate 35 is abutted against the curved plate body 31 located on the outer side; correspondingly, in the right side in FIG. In the side mold 30, 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. Thus, 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. Of course, in other embodiments, 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 inner side of the two extensions 12 of the tubular section 20, such that the extensions 12 of the two connecting members can likewise be offset from each other, for the purpose of fixedly connecting the two tower segments 20.

Then, 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.

In 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.

In the above step S101, two towers 20 having the same structure and the same size have been produced. Next, after the poured concrete is solidified to form the tower segment 20, 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. Referring to Figures 9 and 10, it is first necessary to position the two tower segments 20 with the mold 30 removed so that the assembled two tower segments 20 can enclose a generally annular shape. Then, the respective connecting members of the two tower segments 20 (i.e., two connecting members that are opposite each other) can be connected to each other, in particular, because 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.

In addition, in order to improve the tightness of 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. Specifically, since 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. Between 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.

Thereby, after the connection of the two tower segments 20 is completed, the concrete can be poured into the accommodating space 22, whereby the sealing of the tower section 1 can be further improved, and the structure of the tower section 20 itself can be enclosed. 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.

Finally, a plurality of annular tower sections 1 can be made in accordance with the method in step S102.

In step S103, two or more tower sections 1 are sequentially stacked in the axial direction of the tower.

Since the annular tower section 1 has been formed by the end joining of the two tower sections 20 in the above step S102, 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.

The present disclosure may be embodied in other specific forms without departing from the spirit and essential characteristics. The present embodiments are to be considered in all respects as illustrative and not restrict All changes in the scope are thus included in the scope of the present disclosure. Also, different technical features that appear in different embodiments can be combined to achieve a beneficial effect. Other variations of the disclosed embodiments can be understood and effected by those skilled in the <RTIgt;

Claims

A connecting member for a tower section (1), the tower section (1) comprising two or more concrete tower sections (20) successively distributed along a circumferential direction thereof, the connecting member being used for connection Adjacent two tower segments (20), the tower segments (20) respectively forming connecting end faces (211, 212) on both sides along the extending direction thereof, wherein

The connecting member includes one or more connecting plate bodies (10), each of the connecting plate bodies (10) including a fixing portion (11) and an extending portion that each extend in the longitudinal direction and are successively distributed in a direction perpendicular to the longitudinal direction. (12), wherein the fixing portion (11) can be embedded in the tower segment (20) along the extending direction of the tower segment (20) to connect the connecting plate (10) Fixed to the tower segment (20), the extension portion (12) can be extended from the connecting end surface (211, 212) away from the connecting end surface (211, 212) to make adjacent The two tower segments (20) can be mated to each other by respective extensions (12).
The connecting member according to claim 1, wherein the fixing portion (11) includes a first plate body (111) and a second plate body (112), and the first plate body (111) is coupled to the extending portion (12) and the second plate body (112), and the first plate body (111) and the second plate body (112) intersect to be disposed.
The connecting member according to claim 2, wherein said fixing portion (11) further comprises one or more reinforcing members (13), said reinforcing member (13) being mounted to said first plate body (111) and/or The second plate body (112) projects toward a direction away from the corresponding first plate body (111) and/or the second plate body (112).
The connecting member according to claim 3, wherein the reinforcing member (13) is screwed to the corresponding first plate body (111) and/or the second plate body (112); or The reinforcement member (13) is welded to the corresponding first plate body (111) and/or the second plate body (112).
The connecting member according to claim 3, wherein the fixing portion (11) includes two or more of the reinforcing members (13), and two or more of the reinforcing members (13) are uniformly arranged in the longitudinal direction Corresponding to the first plate body (111) and/or the second plate body (112).
The connecting member according to claim 1, wherein said extending portion (12) is provided with a plurality of connecting holes in said longitudinal direction to enable adjacent two of said tower segments (20) to pass through respective places The extensions (12) are fixedly connected to each other by fasteners (38).
A concrete tower section (20) for assembling a tower section (1) of a wind power generator, characterized in that the tower section (20) comprises:

a segment body (21) extending in an arc along the extending direction of the tower section (1); and

The connecting member according to any one of claims 1 to 6, wherein the one or more connecting plate bodies (10) are connected to the circumferential direction of the segment body (21) along the column section (1) At least one end.
A tower comprising two or more annular tower sections (1) arranged in series along its axial direction, characterized in that the tower section (1) comprises more than two according to claim 7 The tower section (20), two or more of the tower sections (20) are sequentially connected end to end in the circumferential direction through the respective extensions (12).
The tower according to claim 8, wherein said connecting member comprises two said connecting plates (10), and said connecting plates (10) are connected to said tower segments in parallel with each other (20) So that the two adjacent tower segments (20) are fitted to each other along the tower section by the extensions (12) of the respective two of the connecting plates (10) 1) An accommodation space (22) extending in the extending direction.
A tower according to claim 8, wherein the extensions (12) of two adjacent tower sections (20) are offset from each other in the radial direction of the tower section (1).
A method for manufacturing a tower, characterized in that it comprises:

Providing more than two tower segments (20) according to claim 7;

Between the two or more towers (20) through the extension (12) in the circumferential direction of the end of the tail to form the tower section (1);

More than two of the tower sections (1) are sequentially stacked along the axial direction of the tower.
A method of making a tower according to claim 11, wherein said step of providing more than two tower segments (20) according to claim 7 further comprises:

An arc-shaped pouring cavity (33) matching the shape of the segment body (21) is lapped by the mold (30);

Supporting the connecting member according to any one of claims 1 to 6 by the mold (30), and fixing the connecting plate body (10) of each of the one or more connecting plate bodies (10) The portion (11) is erected in the pouring chamber (33) and extends integrally along the extending direction of the pouring chamber (33) while the extending portion (12) is circumferentially along the pouring chamber (33) Extending the exterior of the pouring chamber (33);

The grout is poured into the pouring chamber (33), and the mold (30) is removed after the segment body (21) is formed.
The manufacturing method of a tower according to claim 11, wherein said connecting member comprises two said connecting plates (10), and said connecting plates (10) are connected to each other in a direction opposite to each other The tower segment (20), the manufacturing method further includes:

Between the two adjacent tower segments (20) through the respective connecting members to enclose an accommodating space (22) extending along the extending direction of the tower section (1);

The grout is watered in the accommodating space (22) to seal and connect the two adjacent tower segments (20).
A concrete tower segmented mold (30) for making a tower segment (20) according to claim 7, wherein the mold (30) comprises:

Base and top plate;

Two curved plates (31, 32) supported between the base and the top plate in parallel with each other to enable passage of the two curved plates The body (31, 32), the base and the top plate define an arcuate space;

Two pre-support members respectively located at circumferentially opposite ends of the arcuate space to define and the segment body (21) in the arcuate space Shaped matching cavities (33), and the pre-supports can support the connecting member according to any one of claims 1 to 6 at the pouring cavity (33) for each of the A fixing portion (11) of the connecting plate body (10) is erected in the pouring cavity (33) and extends along an extending direction of the pouring cavity (33) while the extending portion (12) is along the pouring cavity The circumferential direction of (33) projects toward the outside of the pouring chamber (33).
The mold (30) according to claim 14, wherein the pre-support comprises a backing plate (34, 35) and a limiting side plate (36), and

When the connecting member includes one of the connecting plate bodies (10), the pre-supporting member includes a backing plate (34) and a limiting side plate (36), and the one supporting plate (34) can be supported at Between the extension (12) of the connecting plate body (10) and one of the two curved plate bodies (31, 32), the limiting side plate (36) can support the connection Between the extension (12) of the plate body (10) and the other of the two curved plate bodies (31, 32) to pass the connection plate body (10) through the pre-support member Maintaining between the two curved plates (31, 32) at predetermined intervals; or

When the connecting member includes two of the connecting plate bodies (10), the pre-supporting member includes two backing plates (34, 35) and a limiting side plate (36), the two supporting plates (34) 35) capable of supporting the respective extensions (12) of the two connecting plate bodies (10) and the corresponding curved plate bodies (31, respectively) of the two curved plate bodies (31, 32). Between 32), the limiting side plate (36) can be supported between the extensions (12) of the two connecting plates (10) to make the two connecting plates through the pre-support The body (10) is respectively held between the two curved plates (31, 32) at predetermined intervals, and the diameters of the two connecting plates (10) along the tower section (1) Separate from each other in the direction.
The mold (30) according to claim 14, wherein the mold (30) further comprises a positioning post (37), the positioning post (37) being able to pass through the two curved plates (31, 32) And the fixing portion (11) of the connecting plate body (10) to position the connecting plate body (10).