Tower wall duct piece maintenance structure for mixed tower type wind power generation

Abstract

The utility model relates to the technical field of mixed tower type wind power generation, in particular to a mixed tower type wind power generation tower wall duct piece maintenance structure which comprises an arc-shaped outer duct piece arranged on the outer side of a tower wall, an arc-shaped inner duct piece arranged on the inner side of the tower wall and a plurality of vertical grooves formed in the inner side and the outer side of the tower wall in a staggered mode. The arc-shaped outer pipe pieces and the arc-shaped inner pipe pieces are provided with ribs corresponding to the vertical grooves, the ribs can be embedded into the vertical grooves, the arc-shaped outer pipe pieces and the arc-shaped inner pipe pieces are fixed to the tower wall through anchor rod devices, and gaps between the arc-shaped outer pipe pieces and the tower wall and gaps between the arc-shaped inner pipe pieces and the tower wall are grouted. The pipe pieces are arranged on the inner side and the outer side of the tower wall and connected through the steel members, the pipe pieces are reinforced, the strength and durability of the pipe pieces are improved, radial pre-stress is provided for the pipe pieces, the anti-cracking capacity and rigidity of the tower wall can be improved to a large extent, an existing hoisting whole piece replacement process is replaced, the engineering quality is guaranteed, and the construction cost is reduced. And the construction time and cost can be effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed-tower wind power generation, in particular to a tower wall pipe segment maintenance structure of a mixed-tower wind power generation. Background Art

[0002] The wind turbine hybrid tower includes a prestressed concrete tower and a steel structure tower. The prestressed concrete tower has a large overall structural rigidity and a large damping coefficient, which ensures that the unit has a small amplitude during installation and its entire life cycle, ensures that the windward angle of the impeller system is stable, the power generation is more stable and the operation and maintenance costs are greatly reduced.

[0003] However, when the concrete tower wall has exceeded its service life or is damaged during use and needs maintenance, the traditional repair method is to use the process of lifting and replacing the entire piece. This process has a long construction period, high construction cost, and many safety hazards. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a tower wall pipe segment maintenance structure for a mixed tower type wind power generation.

[0005] A tower wall segment maintenance structure for a mixed-tower wind power generation system comprises an arc-shaped outer segment coaxially arranged on the outer side of the tower wall and an arc-shaped inner segment coaxially arranged on the inner side of the tower wall. A plurality of vertical grooves are arranged in the area on the outer side of the tower wall covered by the arc-shaped outer segment, and a plurality of vertical grooves are also arranged in the area on the inner side of the tower wall covered by the arc-shaped inner segment. A plurality of ribs corresponding to the vertical grooves are arranged on the side of the arc-shaped outer segment close to the tower wall and the side of the arc-shaped inner segment close to the tower wall, and the ribs can be embedded in the vertical grooves. The arc-shaped outer segment and the arc-shaped inner segment are fixed to the tower wall by anchor rod devices, and the gaps between the arc-shaped outer segment, the arc-shaped inner segment and the tower wall are filled with grouting liquid.

[0006] Furthermore, the vertical grooves on the outer side of the tower wall and the vertical grooves on the inner side of the tower wall are arranged alternately.

[0007] Furthermore, the anchor device includes a screw rod that passes through the arc-shaped outer segment, the tower wall, and the arc-shaped inner segment, and the screw rod is connected to a nut assembly at a side of the arc-shaped outer segment away from the tower wall and a side of the arc-shaped inner segment away from the tower wall.

[0008] Furthermore, the arc-shaped outer segment and the arc-shaped inner segment are both provided with a plurality of grouting holes.

[0009] Furthermore, the grouting liquid adopts high-strength resin glue as the grouting liquid.

[0010] Furthermore, the surfaces of the arc-shaped outer segment and the arc-shaped inner segment are coated with an epoxy coating for corrosion prevention, and the thickness of the epoxy coating is ≥280 μm.

[0011] The utility model has the advantages of reasonable structure, and segments are arranged on the inside and outside of the tower wall and connected by steel components to realize segment reinforcement, improve the strength and durability of the segments, provide radial prestress for the segments, and can greatly improve the crack resistance and rigidity of the tower wall, replacing the existing whole-piece replacement process by hoisting, which not only ensures the quality of the project, but also can effectively save construction time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional schematic diagram of a tower wall segment maintenance structure of a mixed tower wind power generation according to the utility model;

[0013] Figure 2 This is a first stereoscopic schematic diagram of a tower wall segment maintenance structure of a mixed tower wind power generation system according to the utility model;

[0014] Figure 3 It is a second stereoscopic schematic diagram of a tower wall segment maintenance structure of a mixed tower wind power generation system according to the utility model.

[0015] As shown in the figure: 1. Arc-shaped outer segment; 2. Arc-shaped inner segment; 3. Vertical groove; 4. Rib; 5. Screw; 6. Grouting hole; 7. Nut; 1-1. Tower wall. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0019] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0020] The following is combined with Figure 1 , 2 3 further describe the utility model in detail.

[0021] A tower wall segment maintenance structure for a mixed tower wind power generation, comprising an arc-shaped outer segment 1 coaxially arranged on the outer side of a tower wall 1-1, and an arc-shaped inner segment 2 coaxially arranged on the inner side of the tower wall 1-1, a plurality of vertical grooves 3 are provided in the area on the outer side of the tower wall 1-1 covered by the arc-shaped outer segment 1, and a plurality of vertical grooves 3 are also provided in the area on the inner side of the tower wall 1-1 covered by the arc-shaped inner segment 2, the arc-shaped outer segment 1 close to the tower wall 1-1 side, and the arc-shaped inner segment 2 close to the tower wall 1-1 side are both provided with a plurality of ribs 4 corresponding to the vertical grooves 3, the ribs 4 can be embedded in the vertical grooves 3, the arc-shaped outer segment 1 and the arc-shaped inner segment 2 are fixed to the tower wall 1-1 by an anchor device, and the gaps between the arc-shaped outer segment 1, the arc-shaped inner segment 2 and the tower wall 1-1 are filled with grouting liquid;

[0022] The vertical grooves 3 on the outer side of the tower wall 1-1 and the vertical grooves 3 on the inner side of the tower wall 1-1 are arranged alternately;

[0023] The anchor device includes a screw rod 5 penetrating the arc-shaped outer segment 1, the tower wall 1-1, and the arc-shaped inner segment 2. The screw rod 5 is connected with a nut assembly at a side of the arc-shaped outer segment 1 away from the tower wall 1-1 and a side of the arc-shaped inner segment 2 away from the tower wall 1-1. The nut assembly includes a gasket, a nut 7, etc.

[0024] The arc-shaped outer segment 1 and the arc-shaped inner segment 2 are both provided with a plurality of grouting holes 6 .

[0025] Example: Segment reinforcement is required within 120° of a certain section of the tower wall

[0026] The main steps include:

[0027] Step 1, component customization: According to the measured strength, the thickness of the reinforced component, i.e., the thickness of the arc-shaped outer segment 1 and the arc-shaped inner segment 2, is determined by calculation. According to the repair angle of 120°, 3 pieces of 40° arc-shaped outer segments 1 and 3 pieces of 40° arc-shaped inner segments 2 are respectively arranged inside and outside the tower wall 1-1. Each arc-shaped outer segment 1 is welded with a vertical rib 4 on one side close to the tower wall and each arc-shaped inner segment 2 is welded with a vertical rib 4 on the side close to the tower wall, and the ribs 4 on the arc-shaped outer segment 1 and the ribs 4 on the arc-shaped inner segment 2 are arranged alternately. Each arc-shaped outer segment 1 and each arc-shaped inner segment 2 are provided with a grouting hole 6, the number of the grouting holes 6 is at least 6, the hole diameter is φ32mm, and each arc-shaped outer segment 1 and each arc-shaped inner segment 2 are anti-corrosive with an epoxy coating, and the thickness of the epoxy coating is ≥280μm;

[0028] Step 2: Grooving: vertical grooves 3 are provided on the inner and outer sides of the tower wall to be repaired, corresponding to the ribs 4 on the arc-shaped outer segment 1 and the ribs 4 on the arc-shaped inner segment 2, so that the ribs 4 are embedded in the vertical grooves 3;

[0029] Step 3, drilling and reinforcing: according to the reserved size, use a water drill or a pneumatic drill to drill holes in the arc-shaped outer segment 1, the arc-shaped inner segment 2, and the tower wall 1-1 to facilitate the insertion of the screw 5 of the anchor device. If the borehole diameter is 32mm, use PSB1080-25mm finely rolled threaded steel to be pre-placed in the hole;

[0030] Step 4: Segment installation: The arc-shaped outer segment 1 and the arc-shaped inner segment 2 are installed on the tower wall 1-1 through the screw 5 of the anchor device and locked with the nut 7. The joints are sealed with carbon fiber cloth;

[0031] Step 5: Grouting: Inject high-strength resin glue into the grouting hole 6 to fully fill the gap between the concrete tower wall and the arc-shaped outer segment 1 and the arc-shaped inner segment 2;

[0032] Step 6: tensioning: tighten the nut 7 to a predetermined torque using a torque wrench or a hydraulic pump;

[0033] Step 7. Maintenance and cleaning of the environment: After the grouting reaches the solidification requirements, remove the remaining grouting holes and apply concrete repair agent.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A tower wall segment maintenance structure for a mixed tower wind power generation, characterized in that: It includes an arc-shaped outer segment coaxially arranged on the outer side of the tower wall and an arc-shaped inner segment coaxially arranged on the inner side of the tower wall. A plurality of vertical grooves are arranged in the area on the outer side of the tower wall covered by the arc-shaped outer segment, and a plurality of vertical grooves are also arranged in the area on the inner side of the tower wall covered by the arc-shaped inner segment. A plurality of ribs corresponding to the vertical grooves are arranged on the side of the arc-shaped outer segment close to the tower wall and the side of the arc-shaped inner segment close to the tower wall. The ribs can be embedded in the vertical grooves. The arc-shaped outer segment and the arc-shaped inner segment are fixed to the tower wall by anchor rod devices, and the gaps between the arc-shaped outer segment, the arc-shaped inner segment and the tower wall are filled with grouting liquid.

2. The tower wall segment repair structure of a mixed tower wind power generation according to claim 1, characterized in that: The vertical grooves on the outer side of the tower wall and the vertical grooves on the inner side of the tower wall are arranged alternately.

3. The tower wall segment maintenance structure of a mixed tower wind power generation according to claim 1, characterized in that: The anchor device comprises a screw rod penetrating the arc-shaped outer segment, the tower wall and the arc-shaped inner segment. The screw rod is connected with a nut assembly at a position of the arc-shaped outer segment away from the tower wall and a position of the arc-shaped inner segment away from the tower wall.

4. The tower wall segment repair structure of a mixed tower wind power generation according to claim 1, characterized in that: The arc-shaped outer tube segment and the arc-shaped inner tube segment are both provided with a plurality of grouting holes.

5. The tower wall segment repair structure of a mixed tower wind power generation according to claim 1, characterized in that: The grouting liquid adopts high-strength resin glue as the grouting liquid.

6. The tower wall segment repair structure of a mixed tower wind power generation according to claim 1, characterized in that: The surfaces of the arc-shaped outer tube segment and the arc-shaped inner tube segment are coated with an epoxy coating for corrosion prevention, and the thickness of the epoxy coating is ≥280 μm.

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