Cast-in-place concrete tower drum

Abstract

The invention discloses a cast-in-place concrete tower drum, and relates to the field of wind power generation tower drums, in particular to a cast-in-place concrete tower drum which is characterized in that a straight tower drum section, a variable-diameter tower drum section and an adapter flange plate are arranged, and the straight tower drum section and the variable-diameter tower drum section are in butt joint to form a continuous concrete pouring cavity; the straight tower tube section on the topmost layer is connected with a traditional steel tower tube through an adapter flange plate to form a final tower tube structure, the straight tower inner tube and the straight tower outer tube are formed by splicing non-dismantling formworks on site, and the straight tower tube sections are poured in a segmented mode, that is, concrete is poured once when one straight tower tube section is spliced. The variable-diameter inner cylinder and the variable-diameter outer cylinder are both formed by splicing steel plates on site, the non-dismantling formworks and the steel plates are very convenient to transport and install, and the problem that a traditional steel tower cylinder is large in diameter and inconvenient to transport is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of wind power generation towers, and in particular to a cast-in-place concrete tower. Background Technology

[0002] With the rapid development of my country's wind power industry, wind turbine units are becoming increasingly larger in capacity, rotor diameter, and hub height. Traditionally, wind turbines are supported by steel conical towers. However, with the increasing size of wind turbines, the diameter of steel towers is growing to meet stress and rigidity requirements. But road transport limitations restrict the bottom diameter of these steel towers, thus limiting the development of large-diameter, high-height, and high-power wind turbines. Therefore, designing a cast-in-place concrete tower that is easy to transport and install is particularly urgent. Summary of the Invention

[0003] The purpose of this invention is to provide a cast-in-place concrete tower to solve the problems existing in the prior art, making the tower structure easier to transport and install.

[0004] To achieve the above objectives, the present invention provides the following solution: This invention provides a cast-in-place concrete tower, comprising: multiple straight tower sections, multiple variable diameter tower sections, and a transition flange; The straight tower section includes a straight tower inner cylinder and a straight tower outer cylinder coaxially sleeved outside the straight tower inner cylinder. The first annular cavity formed between the two is filled with concrete. Both the straight tower inner cylinder and the straight tower outer cylinder are constructed by splicing together non-removable templates. The variable-diameter tower section includes a variable-diameter inner cylinder and a variable-diameter outer cylinder coaxially sleeved outside the variable-diameter inner cylinder. The second annular cavity formed between the two is filled with concrete. Both the variable-diameter inner cylinder and the variable-diameter outer cylinder are constructed by splicing steel plates. The bottom diameter of the variable-diameter tower section is larger than the top diameter, forming a conical transition section. The variable-diameter inner cylinder and the straight tower inner cylinder, as well as the variable-diameter outer cylinder and the straight tower outer cylinder, are respectively connected to form continuous concrete pouring cavities. The bottom surface of the transition flange is fixedly connected to the top of the top straight tower section, and the top surface of the transition flange is used to connect with a conventional steel tower.

[0005] Furthermore, the edges of the non-removable template are alternately provided with protrusions and grooves, and adjacent templates are fixed by the insertion and engagement of the protrusions and the grooves.

[0006] Furthermore, the straight tower section also includes a first rear-mounted component and a second rear-mounted component. The first rear-mounted component has a protruding structure with the same size as the non-removable template. The second rear-mounted component has a groove structure with the same size as the non-removable template. The first and second rear-mounted components are prefabricated and are used to supplement the groove and protrusion after the non-removable template is cut.

[0007] Furthermore, it also includes a non-removable template connector, which is H-shaped and has fastening screws on its wing plate. The fastening screws are arranged in at least two rows along the width direction of the wing plate and are evenly distributed in multiple rows along the length direction of the wing plate, for fixing two adjacent non-removable templates.

[0008] Furthermore, multiple hooks are provided between the outer wall of the straight tower inner cylinder and the inner wall of the straight tower outer cylinder, and between the outer wall of the variable diameter inner cylinder and the inner wall of the variable diameter outer cylinder.

[0009] Furthermore, it also includes: A first nut and a second nut are provided on the outer wall of the inner cylinder of the straight tower, and the threads of the first nut and the second nut are in opposite directions; a screw with a pull ring is screwed onto the first nut and the second nut respectively. The two ends of the hook are respectively hooked into the pull rings of the screw with pull rings on the inner cylinder and outer cylinder of the straight tower; The outer wall of the variable diameter inner cylinder and the inner wall of the variable diameter outer cylinder are provided with reinforcing ribs, and the reinforcing ribs are provided with hanging holes for the end of the hook to be attached.

[0010] Furthermore, the non-removable template is a flat plate, and the straight tower section is a regular N-prism, where N is greater than or equal to 6 and less than or equal to 16; The straight tower section also includes a tower corner, which serves as the corner of the regular N-prism and is provided with an insertion structure that cooperates with the removable template.

[0011] Furthermore, the upper and lower surfaces of the variable diameter inner cylinder and the variable diameter outer cylinder are respectively provided with L-shaped insert plates for insertion into the straight tower section, and the upper and lower surfaces of the variable diameter inner cylinder and the variable diameter outer cylinder are fixedly connected to the bottom surface of the horizontal part of the L-shaped insert plate. After the straight tower section is inserted into the variable diameter tower section, the horizontal part of the L-shaped insert plate is clamped between the mating surfaces of the straight tower section and the variable diameter tower section, and the vertical part of the L-shaped insert plate is inserted into the cavity between the inner cylinder and the outer cylinder of the straight tower, and fits against the outer wall of the inner cylinder and the inner wall of the outer cylinder of the straight tower respectively, so as to play a positioning and support role.

[0012] Furthermore, it also includes anchor bolts, which are pre-embedded in the concrete of the topmost straight tower section; The adapter flange includes an upper flange and a lower flange. The bottom surface of the lower flange is provided with a through hole for fixing the anchor bolts. The upper flange is used to connect with the conventional steel tower.

[0013] Furthermore, it also includes prestressed steel strands and reinforcing cages; The prestressed steel strands are provided in multiple strands, and the multiple prestressed steel strands are evenly distributed along the circumference of the transition flange. One end of any one of the prestressed steel strands is fixedly mounted on the transition flange, and the other end is used to connect to the installation foundation on the ground. The reinforcing cage is placed inside the concrete of the straight tower section and the variable diameter tower section.

[0014] The present invention achieves the following technical effects compared to the prior art: This invention discloses a cast-in-place concrete tower. By setting up a straight tower section, a variable-diameter tower section, and a transition flange, the straight tower section and the variable-diameter tower section are connected to form a continuous concrete pouring cavity. The top straight tower section is connected to a traditional steel tower through the transition flange to form the final tower structure. The inner and outer straight tower sections are both assembled on-site without the need for formwork removal. The straight tower sections are poured in sections, meaning that concrete is poured once for each section assembled. The inner and outer variable-diameter tower sections are both assembled on-site from steel plates. The absence of formwork removal and the use of steel plates make transportation and installation very convenient, effectively solving the problem of traditional steel towers having large diameters that are inconvenient to transport. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram showing the connection between the straight tower section and the variable diameter tower section in an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the connection between the transition flange and the straight tower section and the traditional steel tower in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internally pulled, non-removable high-strength concrete fiber formwork that constitutes the inner and outer cylinders of the straight tower in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the variable diameter tower section in an embodiment of the present invention; Figure 5 This is a schematic diagram of the variable diameter tower section from another angle in an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view at point E in the middle; Figure 7 This is a schematic diagram of the structure of rear-mount component one and rear-mount component two in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of one type of concrete tower corner in an embodiment of the present invention; Figure 9 This is a schematic diagram of the non-removable template connector in an embodiment of the present invention; Figure 10 for Figure 9 Schematic diagram of the cross section at point DD; Figure 11 This is a schematic diagram of the H-shaped tower corner in an embodiment of the present invention; Figure 12 for Figure 11 Schematic diagram of the cross section at point AA; Figure 13 for Figure 11 Schematic diagram of the cross section at point A'-A'; Figure 14 This is a schematic diagram of the H-shaped tower corner with pull ring in an embodiment of the present invention; Figure 15 for Figure 14 Schematic diagram of cross-section at CC; Figure 16 for Figure 14 A cross-sectional view at C'-C' in the middle; Figure 17 This is a schematic diagram of the H-shaped tower corner with two webs in an embodiment of the present invention; Figure 18 This is a schematic diagram of the splicing of an internally pulled, non-removable high-strength concrete fiber formwork for the straight tower section in an embodiment of the present invention. Figure 19 This is a schematic diagram of the splicing of a non-removable steel wire mesh fiber cement board template and an internally pulled non-removable high-strength concrete fiber template for the straight tower section in this embodiment of the invention. The components include: 1. Straight tower inner cylinder; 2. Straight tower outer cylinder; 3. Removable formwork; 4. Variable diameter inner cylinder; 5. Variable diameter outer cylinder; 6. Steel plate; 7. Upper flange; 8. Lower flange; 9. Support cylinder; 10. Hook; 11. Screw with pull ring; 12. Tower corner; 13. Rear-mounted component one; 14. Rear-mounted component two; 15. L-shaped insert plate; 16. Anchor bolt; 17. Prestressed steel strand; 18. Support ring; 19. Wire mesh; 20. Concrete; 21. Traditional steel tower; 22. Reinforcing rib plate; 23. Removable formwork connector; 231. Wing plate; 232. Web plate; 233. Top screw hole; 234. Pull ring two. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The purpose of this invention is to provide a cast-in-place concrete tower to solve the problems existing in the prior art and make the tower structure easy to transport.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] This invention provides a cast-in-place concrete tower, such as Figure 1 , Figure 2 As shown, it includes: a straight tower section, a variable diameter tower section, and a transition flange; The straight tower section includes a straight inner cylinder 1 and a straight outer cylinder 2 coaxially fitted outside the straight inner cylinder 1. The first annular cavity formed between the two is filled with concrete 20. Both the straight inner cylinder 1 and the straight outer cylinder 2 are constructed by splicing together non-removable formwork 3. The variable diameter tower section includes a variable diameter inner cylinder 4 and a variable diameter outer cylinder 5 coaxially fitted outside the variable diameter inner cylinder 4. The second annular cavity formed between the two is filled with concrete 20. Both the variable diameter inner cylinder 4 and the variable diameter outer cylinder 5 are constructed by splicing together steel plates 6. The bottom diameter of the variable diameter tower section is larger than the top diameter, forming a conical transition section. The variable diameter inner cylinder 4 and the straight inner cylinder 1, and the variable diameter outer cylinder 5 and the straight outer cylinder 2 are respectively connected to form continuous concrete cavities for pouring concrete 20. The bottom surface of the transition flange is fixedly connected to the top of the top straight tower section, and the top surface of the transition flange is connected to the traditional steel tower section 21.

[0021] By setting up straight tower sections, variable-diameter tower sections, and transition flanges, the straight tower sections and variable-diameter tower sections are connected to form a continuous concrete pouring cavity 20. The bottom diameter of the variable-diameter tower section is larger than the top diameter, forming a conical transition section. By connecting large-diameter and small-diameter straight tower sections below and above the variable-diameter tower section respectively, the radius of the straight tower sections is reduced sequentially. The top straight tower section is connected to the traditional steel tower through the transition flange to form the final tower structure. The inner straight tower 1 and the outer straight tower 2 are both assembled on-site using non-removable formwork 3. The straight tower sections are poured in sections, that is, concrete 20 is poured once after assembling a section of the straight tower section. The inner variable-diameter cylinder 4 and the outer variable-diameter cylinder 5 are both assembled on-site using steel plates 6. The non-removable formwork 3 and the steel plates 6 are small in size, which is very convenient for transportation and installation, effectively solving the problem that the large diameter of traditional steel towers is inconvenient for transportation.

[0022] The non-removable formwork 3 can be one or a combination of two of the following: an internally tensioned non-removable high-strength concrete fiber formwork or a non-removable steel wire mesh fiber cement board formwork. The internally tensioned non-removable high-strength concrete fiber formwork is mainly composed of cement, fly ash, slag powder, fiber, ceramsite, gravel, sand, etc., mixed in a certain proportion, thoroughly stirred, and then pressed by concrete molding machinery. The non-removable steel wire mesh fiber cement board formwork is mainly composed of calcium hydroxide, quartz powder, cement, fly ash, natural fiber, and steel wire mesh structure. The above materials are mixed in proportion with water to form a slurry, which is then spread layer by layer on the steel wire mesh structure and pressed into shape. Figure 19 The example shown uses the non-removable steel wire mesh fiber cement board formwork on the left and the internally pulled non-removable high-strength concrete fiber formwork on the right.

[0023] As an example of an implementable approach, such as Figure 18 As shown, the four edges of the non-removable template 3 are alternately provided with protrusions and grooves. Adjacent templates are fixed by protrusion-groove interlocking, which improves the convenience of installation of the straight tower section. When installing the upper non-removable template 3, it is necessary to stagger the lower non-removable template 3, that is, the vertical joints of the upper and lower non-removable template 3 are not on the same straight line.

[0024] As an example of an implementable approach, such as Figure 7 As shown, the straight tower section also includes a first post-installation component 13 and a second post-installation component 14. The first post-installation component 13 and the second post-installation component 14 are prefabricated parts, which can be high-strength nylon products, and are respectively provided with protrusions and grooves of the same size as the non-removable template 3. They are used to supplement the grooves and protrusions after the non-removable template 3 is cut. When splicing the straight tower section, the non-removable template 3 that does not meet the size will be cut. Therefore, the first post-installation component 13 and the second post-installation component 14 are bonded to the corresponding positions of the non-removable template 3 to realize the function of interlocking between the non-removable templates 3.

[0025] As an example of an implementable approach, such as Figure 4 and Figure 5 As shown, both the variable diameter inner cylinder 4 and the variable diameter outer cylinder 5 are constructed by bolting together steel plates 6, and the thickness of the steel plates 6 is not less than 5mm.

[0026] As an example of an implementable approach, such as Figure 9 and Figure 10As shown, it also includes a non-removable template connector 23, which is H-shaped and made of metal. Its wing plate 231 has fastening screws and screw holes 233. The fastening screws are fixed in the screw holes 233, and at least two rows of fastening screws are arranged along the width direction of the wing plate 231, with multiple screws evenly distributed along the length direction of the wing plate 231. In use, two adjacent non-removable templates 3 are inserted into both sides of the web plate 232, sandwiching them between the two wing plates 231, and then the fastening screws are used to fix the non-removable templates 3, thus completing the fixed connection of the two adjacent non-removable templates 3. Preferably, the non-removable template connector 23 is mainly used for the mutual connection between non-removable steel wire mesh fiber cement board templates.

[0027] As an example of an implementable approach, such as Figure 1 , Figure 18 , Figure 19 As shown, multiple hooks 10 are provided between the outer wall of the straight tower inner cylinder 1 and the inner wall of the straight tower outer cylinder 2, and between the outer wall of the variable diameter inner cylinder 4 and the inner wall of the variable diameter outer cylinder 5, to realize the connection between the straight tower inner cylinder 1 and the straight tower outer cylinder 2 and the cavity size fixation. At the same time, after the concrete 20 in the straight tower section and the variable diameter tower section is solidified, the non-removable formwork 3 and the steel plate 6 are firmly fixed to the concrete 20 by the hooks 10.

[0028] As an example of an implementable approach, such as Figure 1 , Figure 3 , Figure 18 As shown, it also includes a first nut, a second nut, and a screw 11 with a pull ring. The first nut is located on the outer wall of the inner cylinder 1 of the straight tower, and the second nut is located on the inner wall of the outer cylinder 2 of the straight tower. The threads of the first nut and the second nut have opposite directions. A screw 11 with a pull ring is screwed onto the first nut and the second nut, respectively. A pull ring is provided at the end of the screw 11 with a pull ring. A wire mesh 19 is provided inside the non-removable template 3 of the straight tower section. The wire mesh 19 is fixed to the first nut or the second nut by welding. The two ends of the hook 10 are provided with hooks. The hooks are respectively hooked into the pull rings of the screw 11 with a pull ring on the inner cylinder 1 and the outer cylinder 2 of the straight tower. The hook 10 is tightened and fixed by rotating the screw 11 with a pull ring. The outer wall of the variable diameter inner cylinder 4 and the inner wall of the variable diameter outer cylinder 5 are provided with reinforcing ribs 22, and the reinforcing ribs 22 are provided with hanging holes for the ends of the hooks 10 to be hooked. When the template 3 is a non-removable steel wire mesh fiber cement board template, the first nut or the second nut is installed after the non-removable steel wire mesh fiber cement board template is processed. A countersunk through hole is set in the non-removable steel wire mesh fiber cement board template, and the first nut or the second nut is installed in the countersunk through hole. The size of the countersunk through hole is slightly smaller than the size of the nut with the bottom plate, and the countersunk depth is 1 to 2 mm greater than the thickness of the bottom plate of the nut with the bottom plate.

[0029] As an example of implementation, it also includes bark nails, which are used to fill the gap between the hooks and pull rings at both ends of the hook 10, effectively preventing the hook 10 from loosening and falling off when the vibrator is pulled during the pouring of concrete 20.

[0030] As an example of an implementable approach, such as Figure 2 , Figure 8 , Figure 18 As shown, the thickness of the template 3 is not less than 30mm and it is a flat plate. The straight tower section is a regular N-prism, where N is greater than or equal to 6 and less than or equal to 16. The attached diagram uses N=8 as an example. The use of a flat plate for the template 3 makes it easier to manufacture, transport, and install. The straight tower section also includes a tower corner 12, which serves as the corner of the regular N-prism of the straight tower section. It has an insertion structure that cooperates with the template 3 for insertion. The addition of the tower corner 12 facilitates the installation of the straight tower section. When the edge of the template 3 has protrusions and grooves, the insertion structure of the tower corner 12 is a protrusion and groove structure corresponding to the template 3. It can be a precast concrete component. At the same time, the post-installation parts 13 and 14 can also be used to supplement the grooves and protrusions after the tower corner 12 is cut. Figures 11 to 17 As shown, an H-shaped, non-removable template connector 23 with a certain angle can also be used as the corner of the straight tower section. The figure illustrates this with a corner angle of 135° as an example. Figures 14 to 16 As shown, a pull ring 234 can also be provided on the non-removable template connector 23 to fix the pull hook 10, so as to achieve a reliable connection between the tower corners 12 of the inner cylinder 1 and the outer cylinder 2 of the straight tower. The pull ring 234 can be a hexagonal nut and is fixed to the non-removable template connector 23 by welding. Figure 17 As shown, the web plate 232 of the non-removable template connector 23 can be set in two, which effectively improves the structural strength of the non-removable template connector 23.

[0031] As an example of an implementable approach, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 As shown, L-shaped insert plates 15 for insertion into the straight tower section are respectively provided on the upper and lower surfaces of the variable diameter inner cylinder 4 and the variable diameter outer cylinder 5. The upper and lower surfaces of the variable diameter inner cylinder 4 and the variable diameter outer cylinder 5 are fixedly connected to the bottom surface of the horizontal part of the L-shaped insert plate 15. After the straight tower section and the variable diameter tower section are inserted, the horizontal part of the L-shaped insert plate 15 is clamped between the mating surfaces of the straight tower section and the variable diameter tower section, and the vertical part of the L-shaped insert plate 15 is inserted into the cavity between the straight tower inner cylinder 1 and the straight tower outer cylinder 2, and is tightly fitted to the outer wall of the straight tower inner cylinder 1 and the inner wall of the straight tower outer cylinder 2, respectively, so as to play a positioning and support role.

[0032] As an example of an implementable approach, such as Figure 2 As shown, it also includes anchor bolts 16, which are pre-embedded in the concrete 20 of the top straight tower section; the transition flange includes an upper flange 7 and a lower flange 8, and a through hole is provided on the bottom surface of the lower flange 8 for the anchor bolts 16 to pass through. After passing through the through hole on the bottom surface of the lower flange 8, the anchor bolts 16 are fixedly connected to the transition flange, and the upper flange 7 is fixedly connected to the conventional steel tower 21.

[0033] As an example of an implementable approach, such as Figure 2 As shown, it also includes prestressed steel strands 17, which are evenly distributed along the circumference of the transition flange. One end of any prestressed steel strand 17 is fixedly mounted on the transition flange, and the other end is used to connect to the ground installation foundation. The use of prestressed steel strands 17 effectively improves the structural strength of the tower. It also includes a reinforcing cage, which is placed within the concrete 20 of the straight tower section and the variable diameter tower section to improve the structural strength of the concrete 20.

[0034] As an example of an implementable approach, such as Figure 2 As shown, the transition flange also includes a support ring 18 and a support cylinder 9. The support cylinder 9 is a circular cylindrical structure that is uniformly clamped between the upper flange 7 and the lower flange 8 along the circumference. The upper flange 7 and the lower flange 8 are provided with through holes that communicate with the support cylinder 9. One end of the prestressed steel strand 17 passes through the support cylinder 9 and is fixed to the upper flange 7. The support ring 18 is a cylindrical structure that is sleeved and fixed to the outer circumference of the upper flange 7 and fixed to the lower flange 8 at the bottom. The outer circumference of the support ring 18 is provided with triangular reinforcing ribs that are fixedly connected to the lower flange 8.

[0035] As an example of implementation, a grouting layer is provided in the gap between the lower flange 8 and the top straight tower section. During the installation of the transition flange, secondary grouting is performed in the gap between the lower flange 8 and the top straight tower section to ensure that the lower flange 8 and the concrete 20 of the top straight tower section are tightly bonded.

[0036] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0037] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A cast-in-place concrete tower, characterized in that, include: Multiple straight tower sections, multiple variable diameter tower sections, and transition flanges; The straight tower section includes a straight tower inner cylinder and a straight tower outer cylinder coaxially sleeved outside the straight tower inner cylinder. The first annular cavity formed between the two is filled with concrete. Both the straight tower inner cylinder and the straight tower outer cylinder are constructed by splicing together non-removable templates. The variable-diameter tower section includes a variable-diameter inner cylinder and a variable-diameter outer cylinder coaxially sleeved outside the variable-diameter inner cylinder. The second annular cavity formed between the two is filled with concrete. Both the variable-diameter inner cylinder and the variable-diameter outer cylinder are constructed by splicing steel plates. The bottom diameter of the variable-diameter tower section is larger than the top diameter, forming a conical transition section. The variable-diameter inner cylinder and the straight tower inner cylinder, as well as the variable-diameter outer cylinder and the straight tower outer cylinder, are respectively connected to form continuous concrete pouring cavities. The bottom surface of the transition flange is fixedly connected to the top of the top straight tower section, and the top surface of the transition flange is used to connect with a conventional steel tower.

2. The cast-in-place concrete tower according to claim 1, characterized in that, The edges of the non-removable template are alternately provided with protrusions and grooves, and adjacent templates are fixed by the interlocking of the protrusions and grooves.

3. The cast-in-place concrete tower according to claim 2, characterized in that, The straight tower section also includes a first rear-mounted component and a second rear-mounted component. The first rear-mounted component has a protruding structure with the same size as the non-removable template. The second rear-mounted component has a groove structure with the same size as the non-removable template. The first and second rear-mounted components are prefabricated and are used to supplement the groove and protrusion after the non-removable template is cut.

4. The cast-in-place concrete tower according to claim 1, characterized in that, It also includes a non-removable template connector, which is H-shaped and has fastening screws on its wing plate. The fastening screws are arranged in at least two rows along the width direction of the wing plate and are evenly distributed in multiple rows along the length direction of the wing plate, for fixing two adjacent non-removable templates.

5. The cast-in-place concrete tower according to claim 1, characterized in that, Multiple hooks are provided between the outer wall of the straight tower inner cylinder and the inner wall of the straight tower outer cylinder, and between the outer wall of the variable diameter inner cylinder and the inner wall of the variable diameter outer cylinder.

6. The cast-in-place concrete tower according to claim 5, characterized in that... Also includes: A first nut and a second nut are provided on the outer wall of the inner cylinder of the straight tower, and the threads of the first nut and the second nut are in opposite directions; a screw with a pull ring is screwed onto the first nut and the second nut respectively. The two ends of the hook are respectively hooked into the pull rings of the screw with pull rings on the inner cylinder and outer cylinder of the straight tower; The outer wall of the variable diameter inner cylinder and the inner wall of the variable diameter outer cylinder are provided with reinforcing ribs, and the reinforcing ribs are provided with hanging holes for the end of the hook to be attached.

7. The cast-in-place concrete tower according to claim 1, characterized in that, The non-removable template is a flat plate, and the straight tower section is a regular N-prism, where N is greater than or equal to 6 and less than or equal to 16. The straight tower section also includes a tower corner, which serves as the corner of the regular N-prism and is provided with an insertion structure that cooperates with the removable template.

8. The cast-in-place concrete tower according to claim 1, characterized in that, The upper and lower surfaces of the variable diameter inner cylinder and the variable diameter outer cylinder are respectively provided with L-shaped insert plates for insertion into the straight tower section, and the upper and lower surfaces of the variable diameter inner cylinder and the variable diameter outer cylinder are fixedly connected to the bottom surface of the horizontal part of the L-shaped insert plate. After the straight tower section is inserted into the variable diameter tower section, the horizontal part of the L-shaped insert plate is clamped between the mating surfaces of the straight tower section and the variable diameter tower section, and the vertical part of the L-shaped insert plate is inserted into the cavity between the inner cylinder and the outer cylinder of the straight tower, and fits against the outer wall of the inner cylinder and the inner wall of the outer cylinder of the straight tower respectively, so as to play a positioning and support role.

9. The cast-in-place concrete tower according to claim 1, characterized in that, It also includes anchor bolts, which are pre-embedded in the concrete of the topmost straight tower section; The adapter flange includes an upper flange and a lower flange. The bottom surface of the lower flange is provided with a through hole for fixing the anchor bolts. The upper flange is used to connect with the conventional steel tower.

10. The cast-in-place concrete tower according to claim 1, characterized in that, It also includes prestressed steel strands and steel cages; The prestressed steel strands are provided in multiple strands, and the multiple prestressed steel strands are evenly distributed along the circumference of the transition flange. One end of any one of the prestressed steel strands is fixedly mounted on the transition flange, and the other end is used to connect to the installation foundation on the ground. The reinforcing cage is placed inside the concrete of the straight tower section and the variable diameter tower section.

Images