CN216131032U

CN216131032U - One-time tensioning concrete tower drum

Info

Publication number: CN216131032U
Application number: CN202122508133.8U
Authority: CN
Inventors: 宋江毅; 李梦媛
Original assignee: Shanghai Fengling New Energy Co ltd
Current assignee: Shanghai Fengling New Energy Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-25
Anticipated expiration: 2031-10-18

Abstract

The utility model provides a once-tensioned concrete tower tube. The once-tensioned concrete tower barrel comprises a tower barrel foundation, a tower barrel body, an adapter and a prestressed cable. At least one part of a tower drum base is arranged below the ground, a tower drum body is arranged on the tower drum base and comprises a plurality of concrete tower drum sections which are sequentially connected in the up-down direction, the height of the tower drum body in the up-down direction is more than or equal to 150 m, the maximum transverse dimension of the top end of the tower drum body is 4.8 m-5.8 m, an adapter is connected with the top end of the tower drum body, a prestressed cable is arranged in the tower drum body, the top end of the prestressed cable is anchored on the adapter or the top end of the tower drum body, and the bottom end of the prestressed cable is connected with the tower drum base. The once-tensioned concrete tower barrel provided by the utility model has the advantages of high rigidity, good fatigue resistance, high height and low cost.

Description

One-time tensioning concrete tower drum

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a once-tensioned concrete tower tube.

Background

Along with the increase of the generating efficiency of the fan, the length of the blade is longer and longer, and the height and the section size of the fan tower barrel matched with the blade are also increased continuously. At present, the common height of the domestic tower drum is mostly 120 meters, and although the improvement of the tower drum can bring the improvement of the generated energy, the increase of the height of the tower drum inevitably leads to the increase of the cost of the tower drum and the foundation, so that the realization of the ultrahigh tower drum with low cost is the challenge facing the industry at present. Traditional steel construction tower section of thick bamboo cost is higher, the transportation difficulty, and steel tower section of thick bamboo is lower at the self-oscillation frequency of wheel hub height when higher, produces the resonance with the wind wheel easily, causes the damage to cabin equipment, therefore steel tower section of thick bamboo receives certain restriction in the application in low wind speed district, is difficult to satisfy the construction requirement of large-section super high tower section of thick bamboo.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides the once-tensioned concrete tower tube which is high in height, high in strength and low in cost.

The once-tensioned concrete tower tube of the embodiment of the utility model comprises: a tower foundation, at least a portion of which is disposed below ground; the concrete tower comprises a tower barrel body, wherein the tower barrel body is arranged on the tower barrel foundation and comprises a plurality of concrete tower barrel sections which are sequentially connected in the vertical direction, the height of the tower barrel body in the vertical direction is higher than 150 meters, and the maximum transverse dimension of the top end of the tower barrel body is 4.8-5.8 meters; the adapter is connected with the top end of the tower barrel body; the prestressed cable is arranged in the tower cylinder body, the top end of the prestressed cable is anchored on the adapter or the top end of the tower cylinder body, and the bottom end of the prestressed cable is connected with the tower cylinder foundation.

The tower body of the concrete tower drum provided by the embodiment of the utility model has the advantages of high rigidity and good fatigue resistance, and can provide a strength foundation for building an ultrahigh tower drum. In addition, the tower body of the concrete tower drum provided by the embodiment of the utility model is low in construction cost, and the economical efficiency is ensured while the height of the tower body is improved. The maximum transverse dimension of the top end of the tower cylinder body is within the range of 4.8-5.8 m, the tower cylinder body has enough strength, the interference on the rotation of the blades can be avoided, the construction can be completed by one-time tensioning, the construction process is simplified, and the construction efficiency is improved.

In some embodiments, the concrete tower sections are divided into a top tower section and a bottom tower section, the top tower section is located above the bottom tower section, the top tower section is a straight tower section, and the maximum transverse dimension of the bottom tower section is gradually reduced from bottom to top.

In some embodiments, the bottom end of the bottom drum section has a maximum transverse dimension of 10 meters to 13 meters, and the top end of the bottom drum section is configured to fit the bottom end of the top drum section.

In some embodiments, the bottom tower segment has a height in the up-down direction of 70 meters to 90 meters.

In some embodiments, a tower duct is provided on a wall of the topmost concrete tower section, an adapter duct corresponding to the tower duct is provided on the adapter, and a top end of the prestressed cable is anchored after passing through the tower duct and the adapter duct in sequence.

In some embodiments, the adapter is ring-shaped, the adapter comprising: the connecting bolt penetrates through the bolt hole to be connected with the topmost concrete tower barrel section; a housing having a bottom end connected to an upper surface of the chassis, the chassis including an annular first portion and an annular second portion, the first portion being located inside the housing, the second portion being located outside the housing, the bolt hole being provided in one of the first portion and the second portion, the adapter port being provided in the other of the first portion and the second portion; the flange portion is arranged at the upper end of the shell and extends inwards.

In some embodiments, the adapter is a ring, the outer diameter of the chassis is 4.8 m or less, and the outer diameter of the flange is 4.5 m or less.

In some embodiments, the height of the adapter in the up-down direction is less than or equal to 4 meters.

In some embodiments, the concrete tower section at the top most portion is a cast in place concrete tower section, which is annular and is constructed as an integral part.

In some embodiments, the tower foundation is a solid structure, the concrete tower includes an embedded anchor, the bottom of the embedded anchor is embedded in the tower foundation, and the bottom end of the prestressed cable is connected to the portion of the embedded anchor exposed out of the tower foundation.

Drawings

Fig. 1 is a primary tensioned concrete tower tube according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1 at a.

Fig. 3 is a partially enlarged view of fig. 1 at B.

Fig. 4 is another example of fig. 2.

Reference numerals:

a concrete tower tube 100,

A tower base 110,

A tower body 120, a concrete tower section 121, a tower duct 1211, a top tower section 122, a bottom tower section 123,

Adapter 130, adapter bore 131, chassis 132, bolt holes 1321, first portion 1322, second portion 1323, housing 133, flange 134, and,

Prestressed cable 140, pre-buried anchor rod 150, connecting bolt 160.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the following, a once-tensioned concrete tower drum 100 according to an embodiment of the present invention is described with reference to fig. 1 to 4 as an example, where the concrete tower drum 100 includes, from bottom to top, a tower foundation 110, a tower body 120, and an adapter 130, and the concrete tower drum 100 further includes a prestressed cable 140.

At least a portion of tower foundation 110 is disposed below ground. The tower body 120 is disposed on the tower base 110, and a bottom end of the tower body 120 is connected to the tower base 110. The tower body 120 comprises a plurality of concrete tower sections 121 which are sequentially connected in the up-down direction, that is, the tower body 120 is formed by sequentially stacking and connecting the dry concrete tower sections 121 in the up-down direction. The up-down direction is the vertical direction perpendicular to the ground plane. The height of the tower body 120 in the vertical direction is greater than or equal to 150 m, and the maximum transverse dimension of the top end of the tower body 120 is 4.8 m-5.8 m. The maximum transverse dimension of the top end of the tower body 120 refers to the diameter of the maximum circumscribed circle of the top end of the tower body 120.

Adapter 130 is connected to the top of tower body 120, and adapter 130 is connected to the top of the concrete tower section 121 at the top promptly, and adapter 130 is used for installing the fan. The tower body 120 is hollow, the prestressed cable 140 is disposed in the tower body 120, the top end of the prestressed cable 140 is anchored to the adapter 130 or the top end of the tower body 120, and the bottom end of the prestressed cable 140 is connected to the tower foundation 110.

The main preparation material of the tower body of the concrete tower barrel provided by the embodiment of the utility model is concrete, the concrete has the advantages of high rigidity and good fatigue resistance, a strength foundation can be provided for building an ultrahigh tower barrel, and the concrete tower barrel has a wide application scene in wind power energy development in a low wind speed area. In addition, the height of the concrete tower barrel provided by the embodiment of the utility model is higher than 120 meters of the common tower barrel in the related art, and the lifting of the tower barrel height brings the lifting of the wind power generation capacity, so that the power generation efficiency of the wind power generation equipment comprising the ultrahigh concrete tower barrel provided by the embodiment of the utility model is greatly improved.

In addition, the tower body of the concrete tower drum provided by the embodiment of the utility model is formed by overlapping a plurality of concrete tower drum sections, each concrete tower drum section is lower in height, when the tower body is constructed, common hoisting equipment is adopted, the construction and installation of the tower body can be completed at low cost, and the precast concrete process is adopted, so that the construction time can be greatly shortened, the height of the tower body is improved, and the economical efficiency is ensured.

In addition, the maximum transverse dimension of the top end of the tower body is within the range of 4.8-5.8 m, so that the tower body with the ultra-high height is smaller in size under the condition that the tower body with the ultra-high height has enough strength, and the interference on the rotation of the blades can be better avoided. The higher the height of the tower body is, the more wind energy that the blade bears may be, and because the blade is flexible stronger, consequently when the biggest transverse dimension at tower body top is greater than 5.8 meters, the risk that the tower body disturbed the blade and rotates is higher. When the maximum transverse dimension of the top end of the tower cylinder body is smaller than 4.8 meters, if the tower cylinder body is tensioned once, the strength of the tower cylinder body cannot reach the standard for the tower cylinder body with ultrahigh height in the embodiment of the utility model. Therefore, the maximum transverse dimension of the top end of the tower cylinder body is within the range of 4.8-5.8 m, the tower cylinder body has enough strength, the interference on the rotation of the blades can be avoided, the construction can be completed by one-time tensioning, the construction process is simplified, and the construction efficiency is improved.

One embodiment provided by the present invention is described in detail below with reference to fig. 1-4.

As shown in fig. 1, the concrete tower 100 includes, from bottom to top, a tower foundation 110, a tower body 120, an adapter 130, and a prestressed cable 140. The prestressed cable 140 includes a plurality of prestressed cables 140, and the plurality of prestressed cables 140 are spaced apart from each other in the circumferential direction of the concrete tower 100. Optionally, the concrete tower 100 has a height of 160 meters.

The tower base 110 serves as a supporting base for the tower body 120, and at least a portion of the tower base 110 is located under the ground. The bottom end of the prestressed cable 140 is connected to the tower base 110.

In the present embodiment, the tower base 110 is a solid structure. Optionally, tower foundation 110 is cast. In order to facilitate the connection of the lower end of the prestressed cable 140 with the tower foundation 110, an anchor bolt may be embedded when the tower foundation 110 is poured.

As shown in fig. 3, the concrete tower 100 includes embedded anchor rods 150, the bottom of the embedded anchor rods 150 is embedded in the tower base 110, and the bottom ends of the prestressed cables 140 are connected to the portions of the embedded anchor rods 150 exposed out of the tower base 110, so as to anchor the bottom ends of the prestressed cables 140.

As shown in fig. 1, the tower body 120 includes a plurality of concrete tower segments 121 sequentially connected in the vertical direction, the bottom end of the concrete tower segment 121 at the bottom is connected to the tower base 110, and the adapter 130 is connected to the top end of the concrete tower segment 121 at the top.

Alternatively, the concrete tower segment 121 may be a circular tube structure, i.e. circular in cross-section, or a polygonal tube structure, i.e. polygonal in cross-section, e.g. octagonal, hexagonal. Those skilled in the art can set up the setting as desired.

Optionally, the concrete tower segment 121 is an integrally formed structure, or may be a multi-piece assembly structure.

In the up-down direction, the tower body 120 is divided into a top tower section 122 and a bottom tower section 123, the top tower section 122 is located above the bottom tower section 123, and the bottom end of the top tower section 122 is connected to the top end of the bottom tower section 123. Top tower section 122 includes at least one concrete tower section 121 and bottom tower section 123 includes at least one concrete tower section 121. Preferably, top tower section 122 includes 6-8 concrete tower sections 121 and bottom tower section 123 includes 10-15 concrete tower sections 121.

As shown in fig. 1, the top cylindrical section 122 is a straight cylindrical section, the size of the top cylindrical section 122 is constant in the up-down direction, the bottom cylindrical section 123 is a tapered section, and the maximum transverse size of the bottom cylindrical section 123 is gradually reduced from the bottom to the top. The maximum transverse dimension of the bottom drum section 123 refers to the diameter of the largest circumscribed circle of the bottom drum section 123.

Because the maximum lateral dimension of each concrete tower section 121 in bottom tower section 123 is different, for ease of transportation and hoisting, in order to keep the weight of concrete tower section 121 within a reasonable range, the concrete tower sections 121 that make up bottom tower section 123 can be set to have different heights.

Optionally, the maximum transverse dimension of the bottom end of the bottom cylinder section 123 is 10-13 meters, so that the tower body 120 has excellent stability, and the top end of the bottom cylinder section 123 is structurally matched to the bottom end of the top cylinder section 122, so that the transition between the bottom cylinder section 123 and the top cylinder section 122 is reasonable.

Optionally, the height of the bottom tower section 123 in the up-down direction is 70 meters to 90 meters. The height of the top tower section 122 in the vertical direction can be selected according to the required height of the tower body 120.

The prestressed cable 140 is disposed in the tower body 120, and the prestressed cable 140 may adopt an external prestressing technique or an internal prestressing technique. The top end of the prestressed cable 140 is anchored to the adapter 130 or the top end of the tower body 120.

As shown in fig. 2, the prestressed cable 140 in this embodiment adopts an external prestressing technique, i.e. the prestressed cable 140 is an external prestressed cable. The top end of the prestressed cable 140 is anchored to the adapter 130. A tower duct 1211 is arranged on the wall of the topmost concrete tower section 121, an adapter duct 131 corresponding to the tower duct 1211 is arranged on the adapter 130, and the top end of the prestressed cable 140 sequentially penetrates through the tower duct 1211 and the adapter duct 131 and then is anchored.

Adapter 130 is ring-shaped, and adapter 130 includes a chassis 132, a housing 133, and a flange 134. The chassis 132 is provided with bolt holes 1321 and adapter ports 131, and the connecting bolts 160 pass through the bolt holes 1321 to connect with the topmost concrete tower section 121. The bottom end of housing 133 is coupled to the upper surface of chassis 132. chassis 132 includes a first annular portion 1322 and a second annular portion 1323, wherein first portion 1322 is located inside housing 133 and second portion 1323 is located outside housing 133.

Bolt holes 1321 are provided in the first portion 1322 and adapter bore 131 are provided in the second portion 1323. Alternatively, in other embodiments, the bolt holes 1321 may be provided on the second portion 1323 and the adapter bore 131 on the first portion 1322. That is, the bolt hole 1321 and the adapter port 131 are respectively located on the inner side and the outer side of the housing 133. A flange portion 134 is provided at the upper end of the housing 133 and extends inward. The fan is connected to the flange portion 134.

The housing 133 and the chassis 132 of the adapter 130 in this embodiment form an inverted T-shaped structure. Common adapter structure is the L shape among the correlation technique, and bolt hole and adapter pore all set up inside the casing. Compared with the adapters in the related art, the inverted T-shaped structure of the adapter 130 in this embodiment enables the bolt holes 1321 and the adapter ducts 131 to be respectively formed in the inner side and the outer side of the shell 133, so that the possibility of separating the adapter 130 from the tower body 120 is reduced, rainwater is better prevented from entering gaps, and further freezing and thawing damage to concrete is avoided.

In other embodiments, as shown in FIG. 4, the top end of the prestressed cable 140 may also be anchored to the top end of the tower body 120. The top end of the prestressed cable 140 is anchored to the top end of the tower body 120 after passing through the tower duct 1211, and the anchoring point is located outside the housing 133. Bolt holes 1321 on adapter 130 are located on the inside of housing 133.

Optionally, the adapter 130 is circular. The outer diameter of the base plate 132 is 4.8 m or less, and the outer diameter of the flange portion 134 is 4.5 m or less, so that interference with the blade can be avoided as much as possible. The height of adapter 130 in the up-down direction is not more than 4 meters, so that adapter 130 is convenient to transport.

Optionally, adapter 130 is a steel adapter.

The topmost concrete tower tube section 121 is a cast-in-place concrete tower tube section, which is annular and is constructed as an integrally formed part. Optionally, the topmost concrete tower segment 121 is an octagonal full ring. The other concrete tower tube sections 121 are processed by a prefabrication process and are constructed and installed by an assembly process.

The embodiment of the utility model also provides a construction process of the concrete tower tube, and the concrete tower tube 100 is the once-tensioned concrete tower tube 100 in any one of the embodiments.

The construction process of the concrete tower barrel comprises the following steps:

s10: pouring to form a tower foundation 110, embedding an embedded anchor rod 150 in the tower foundation 110, and exposing the top end of the embedded anchor rod 150 from the tower foundation 110;

s20: installing a plurality of concrete tower sections 121 on a tower foundation 110 to form a tower body 120;

s30: installing adapter 130 on top of tower body 120 and connecting it to the topmost concrete tower segment 121;

s40: the prestressed cable 140 is inserted into the tower body 120, and the bottom end of the prestressed cable is anchored to the top end of the embedded anchor 150, and the prestressed cable 140 is prestressed and tensioned, and the top end of the prestressed cable 140 is anchored to the chassis 132 of the adapter 130 or the top of the tower body 120.

The construction process of the concrete tower drum provided by the embodiment of the utility model can economically construct the ultrahigh tower drum, so that a large wind generating set with higher generating efficiency is constructed. The construction process of the concrete tower tube adopts a one-time tensioning process, and is simple in construction process and high in construction efficiency. A plurality of concrete tower barrel sections are overlapped to form the tower barrel body by adopting common hoisting equipment, so that the cost can be reduced, and the construction of the ultrahigh tower barrel is realized.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A once-tensioned concrete tower tube, comprising:

a tower foundation, at least a portion of which is disposed below ground;

the concrete tower comprises a tower barrel body, wherein the tower barrel body is arranged on the tower barrel foundation and comprises a plurality of concrete tower barrel sections which are sequentially connected in the vertical direction, the height of the tower barrel body in the vertical direction is more than or equal to 150 meters, and the maximum transverse dimension of the top end of the tower barrel body is 4.8-5.8 meters;

the adapter is connected with the top end of the tower barrel body;

the prestressed cable is arranged in the tower cylinder body, the top end of the prestressed cable is anchored on the adapter or the top end of the tower cylinder body, and the bottom end of the prestressed cable is connected with the tower cylinder foundation.

2. A single-tensioned concrete tower according to claim 1, wherein a plurality of the concrete tower sections are divided into a top tower section and a bottom tower section, the top tower section being located above the bottom tower section, the top tower section being a straight section, the maximum transverse dimension of the bottom tower section decreasing from bottom to top.

3. A single-tensioned concrete tower tube according to claim 2, wherein the maximum transverse dimension of the bottom end of the bottom tower tube section is 10-13 meters, and the top end of the bottom tower tube section is structurally adapted to the bottom end of the top tower tube section.

4. A primarily tensioned concrete tower according to claim 2 or 3, wherein the bottom tower section has a height in the up-down direction of 70-90 meters.

5. A one-time tensioned concrete tower cylinder according to claim 1, wherein a tower cylinder hole is formed in the cylinder wall of the topmost concrete tower cylinder section, an adapter hole corresponding to the tower cylinder hole is formed in the adapter, and the top end of the prestressed cable is anchored after sequentially passing through the tower cylinder hole and the adapter hole.

6. A tensioned concrete tower drum according to claim 5, wherein said adapter is ring shaped, said adapter comprising:

the connecting bolt penetrates through the bolt hole to be connected with the topmost concrete tower barrel section;

a housing having a bottom end connected to an upper surface of the chassis, the chassis including an annular first portion and an annular second portion, the first portion being located inside the housing, the second portion being located outside the housing, the bolt hole being provided in one of the first portion and the second portion, the adapter port being provided in the other of the first portion and the second portion;

the flange portion is arranged at the upper end of the shell and extends inwards.

7. A one-time tensioned concrete tower according to claim 6, wherein said adapter is annular, said base plate has an outer diameter of 4.8 meters or less, and said flange portion has an outer diameter of 4.5 meters or less.

8. A once-tensioned concrete tower drum according to claim 6, wherein the height of said adapter in the up-down direction is less than or equal to 4 meters.

9. A primarily tensioned concrete tower tube according to any one of claims 5-8, wherein the topmost concrete tower tube section is a cast in place concrete tower tube section, which is ring-shaped and constructed as an integral moulding.

10. A primarily tensioned concrete tower tube according to any one of claims 1 to 3 and 5 to 8, wherein the tower base is of a solid structure, the concrete tower tube comprises embedded anchor rods, the bottoms of the embedded anchor rods are embedded in the tower base, and the bottom ends of the prestressed cables are connected with the parts of the embedded anchor rods, which are exposed out of the tower base.

11. A primarily tensioned concrete tower tube according to any one of claims 1-3, 5-8, wherein the concrete tower tube section is of a circular tube structure or a polygonal tube structure.

12. A primarily tensioned concrete tower tube according to any one of claims 1-3, 5-8, wherein the concrete tower tube segments are of a multi-piece assembly construction.