Vertical abutted seam grouting device for mixed tower wind power tower tube duct pieces

Abstract

The utility model relates to the technical field of tower tube construction, in particular to a mixed tower wind power tower tube duct piece vertical abutted seam grouting device which comprises a jacking piece, a base is installed on the top of the jacking piece and comprises a top plate, a first receding hole is formed in the top plate, an operation space is arranged below the top plate, and a fast inserting plate is placed on the top face of the top plate. A second receding hole is formed in the quick inserting plate, a base plate used for making contact with the bottom end of the pipe piece is placed on the top face of the quick inserting plate, a third receding hole is formed in the base plate, a grout guide pipe extending into the grouting seam is arranged in the first receding hole, the second receding hole and the third receding hole in a penetrating mode, and a grouting connector is installed at the bottom of the grout guide pipe. The grouting device is used for grouting a grouting seam on one hand and can also be used as a bottom plugging structure of the grouting seam on the other hand, plugging can be rapidly achieved after grouting is completed, slurry solidification does not need to be waited, the construction period is shortened, compared with a traditional grouting technology, a stop valve does not need to be arranged for slurry control, the operation procedure is simplified, and the construction efficiency is improved. The construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of tower construction, and in particular to a grouting device for vertical splicing of segments in a hybrid wind turbine tower. Background Technology

[0002] With the country's promotion of new energy wind power projects, wind power has risen rapidly. In particular, concrete towers have natural durability and can maintain their performance under extreme conditions. They have low maintenance costs and lower investment costs compared to pure steel structure towers, resulting in better power generation. In particular, steel hybrid towers, which combine concrete and steel towers, are gradually increasing their share in the ultra-high tower wind power market, and their advantages are becoming more and more obvious.

[0003] The hybrid wind turbine tower structure is not only convenient for transportation and rapid assembly, but also has lower manufacturing and maintenance costs. Each section of the tower segment is approximately 4 meters high with a wall thickness of 300 mm. The lower tower has a larger outer diameter and is composed of two or more C-shaped segments. Vertical joints are connected by reinforcing bars and grouted. Multiple segments form an O-shaped structure. A 20 mm wide gap is typically left in the vertical joints. Sealing strips are attached to both sides of the segment end faces. Pressure grouting is performed from the bottom, and grouting is complete when the grout overflows from the top.

[0004] However, when grouting is done from the bottom, the grouting equipment and grouting joints cannot be removed immediately because the grout has not yet set. Alternatively, a shut-off valve must be installed in front of the grouting joints before the grouting equipment and grouting joints can be removed, which affects the construction efficiency. Utility Model Content

[0005] In order to eliminate the need for a shut-off valve and achieve rapid sealing after grouting, this utility model provides a grouting device for the vertical joint of the tube segments of a hybrid wind turbine tower.

[0006] The present invention provides a vertical splicing grouting device for hybrid wind turbine tower segments, which adopts the following technical solution:

[0007] A vertical joint grouting device for hybrid wind turbine tower segments includes a lifting component, a base mounted on the top of the lifting component, a top plate with a clearance hole 1 on the top plate, an operating space below the top plate, a quick-insertion plate on the top surface of the top plate with a clearance hole 2 on the quick-insertion plate, a pad plate for contacting the bottom end of the segment on the top surface of the quick-insertion plate, and a clearance hole 3 on the pad plate. A grout guide pipe extending into the grouting joint is inserted into the clearance holes 1, 2 and 3, and a grouting joint is installed at the bottom of the grout guide pipe.

[0008] By adopting the above technical solution, after grouting is completed, the edge of the quick-insertion plate is hammered to quickly cut off the grout guide pipe at the two cutting edges of the clearance hole, and the grout guide pipe is sealed by the quick-insertion plate to prevent grout overflow at the bottom of the grouting joint. After the grout has initially set, the lifting component can be lowered, the grouting device can be removed, and the bottom of the pipe segment can be leveled and repaired. The grouting device is used to grout the grouting joint on the one hand, and on the other hand, it can also be used as a sealing structure at the bottom of the grouting joint. After grouting is completed, sealing can be achieved quickly without waiting for the grout to solidify, thus speeding up the construction period. Compared with the traditional grouting process, this utility model embodiment does not require the setting of a stop valve for grout control, which simplifies the operation process and reduces the construction cost.

[0009] Optionally, the base also includes a bottom plate located below the top plate, with a column vertically fixed between the bottom plate and the top plate, and the top of the lifting component connected to the bottom plate.

[0010] By adopting the above technical solution, the column supports the base plate and the top plate, and an operating space is formed between the base plate and the top plate. The base structure is simple, easy to manufacture, and has a good supporting effect.

[0011] Optionally, the quick-connect plate has a flat cutting edge around the clearance hole.

[0012] By adopting the above technical solution, the flat cutting edge is more conducive to cutting the grout pipe.

[0013] Optional, the lifting component is a jack.

[0014] By adopting the above technical solution, the jack is easy to source materials for use and has good performance.

[0015] Optionally, the pad is a flexible rubber sheet.

[0016] By adopting the above technical solution, the flexible rubber sheet is easy to source and use, and has good performance.

[0017] Optionally, the slurry guide tube is made of plastic.

[0018] By adopting the above technical solution, plastic pipes are easy to source and use, and have good performance.

[0019] Optionally, the base plate and top plate are made of steel plates, and the columns are made of steel pipes.

[0020] By adopting the above technical solutions, steel plates and steel pipes are easy to source and use, and the results are good. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the grouting joint location according to an embodiment of the present invention.

[0022] Figure 2 This is an assembly diagram of the grouting device according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the base structure according to an embodiment of the present utility model.

[0024] Figure 4 This is a cross-sectional view of the quick-connect plate according to an embodiment of the present invention.

[0025] Figure 5 This is a cross-sectional view of the pad plate according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Segment; 2. Grouting joint; 3. Lifting component; 4. Base; 40. Bottom plate; 41. Top plate; 410. Clearance hole one; 42. Column; 5. Quick-insertion plate; 50. Clearance hole two; 6. Pad plate; 60. Clearance hole three; 7. Grouting pipe; 8. Grouting joint. Detailed Implementation

[0027] The following combination Figures 1-5 The present invention will be described in further detail below.

[0028] This utility model discloses a grouting device for the vertical joints of composite wind turbine tower segments. (Refer to...) Figure 1 and Figure 2 A 20mm wide grouting gap 2 is reserved between the end faces of the two segments 1. Cement grout is injected into the grouting gap 2. The vertical splice grouting device of the mixed tower wind turbine segment is installed at the bottom of the grouting gap 2. The device includes a lifting component 3, a base 4, a quick insertion plate 5, a pad 6, a grout guide pipe 7, and a grouting joint 8.

[0029] Reference Figure 2 and Figure 3 In this embodiment, the lifting component 3 is a jack. In other examples, a hydraulic cylinder or other similar device can also be used as the lifting component 3, as long as the usage requirements are met. The base 4 is installed on the top of the lifting component 3. The base 4 includes a base plate 40 and a top plate 41 arranged parallel above the base plate 40. A clearance hole 410 is opened in the center of the top plate 41. The base plate 40 and the top plate 41 are rectangular steel plates of the same size with a thickness of not less than 20mm.

[0030] Reference Figure 2 and Figure 3 Four columns 42 are vertically fixed between the base plate 40 and the top plate 41. In this embodiment, the columns 42 are made of Φ48 steel pipes. The four columns 42 are evenly distributed at the four corners of the base plate 40. The overall height of the base 4 is 500mm-700mm. The height can be adjusted by laying sleepers or other means to meet the grouting requirements at the bottom of the pipe segment 1.

[0031] Reference Figure 2 and Figure 4A quick-insertion plate 5 is placed on the top surface of the top plate 41. The quick-insertion plate 5 is made of a rectangular steel plate with a thickness greater than 10mm. A second relief hole 50 is opened in the center of the quick-insertion plate 5, and the periphery of the second relief hole 50 is ground into a flat cutting edge. In other examples, a thin steel plate with a thickness of 5-8mm can also be used directly.

[0032] Reference Figure 2 and Figure 5 A pad 6 is placed on the top surface of the quick-connect plate 5. In this embodiment, the pad 6 is a flexible rubber plate with a thickness of 20mm. A relief hole 3 60 is opened in the center of the pad 6. The inner diameters of the relief hole 3 60, relief hole 2 50 and relief hole 1 410 are the same.

[0033] Reference Figure 2 The grout guide pipe 7 is inserted from bottom to top through the first relief hole 410, the second relief hole 50, and the third relief hole 60 and extends into the grouting joint 2. In this embodiment, the grout guide pipe 7 is a plastic pipe. The grouting joint 8 is inserted at the bottom of the grout guide pipe 7, and the grout is injected into the grouting joint 2 from bottom to top through the grouting joint 8 and the grout guide pipe 7.

[0034] The implementation principle of the vertical splicing grouting device for the hybrid wind turbine tower segments in this embodiment is as follows: After the two segments 1 are hoisted to the assembly platform and joined together, a 20mm wide grouting joint 2 is formed between the end faces of the segments 1. According to the bottom elevation of the segments 1, suitable sleepers are set below, and lifting components 3, bases 4, quick-insertion plates 5 and pads 6 are sequentially set on the sleepers.

[0035] Then, the grout guide pipe 7 is passed from bottom to top through the first relief hole 410, the second relief hole 50, and the third relief hole 60, extending into the grouting joint 2. The length extending into the grouting joint 2 is 50-100mm. The lifting component 3 is adjusted to seal the spacer plate 6 and the grouting joint 2 tightly. Then, the excess grout guide pipe 7 located below the top plate 41 is cut off, and the grouting joint 8 is inserted into the grout guide pipe 7 and firmly fixed. At this point, the assembly of the device is complete.

[0036] Subsequently, the bottom grouting method is adopted. Before grouting, the segment 1 should be fully moistened to prevent water accumulation. It is also advisable to test the grouting joint 2 with water to avoid grout leakage during grouting. Cement-based grouting material is used for grouting. Mechanical mixing is recommended for grouting, and the mixing time should not be less than 5 minutes to ensure that the grouting material is mixed evenly. Both grouting joints 2 are grouted at the same time. Grouting should be carried out slowly with a flow rate of 5-10 L / min, and should not exceed 10 L / min. Therefore, the filling time of vertical joints should be about 10-20 minutes, and the specific procedure should be carried out in accordance with the instruction manual or manufacturer's guidance.

[0037] During the grouting process, when grout overflows from the bottom without any air bubbles being released, it indicates that the grouting is complete. At this point, the edge of the quick-release plate 5 is struck with a hammer to quickly cut off the grout guide pipe 7 at the edge of the second clearance hole 50, and the grout guide pipe 7 is sealed by the quick-release plate 5 to prevent grout from overflowing from the bottom of the grouting joint 2. After the grout has initially set, the lifting component 3 can be lowered, the grouting device can be removed, and the bottom of the segment 1 can be leveled and repaired.

[0038] The grouting device in this embodiment of the present invention is used to grout the grouting joint 2 on the one hand, and on the other hand, it can also be used as a sealing structure at the bottom of the grouting joint 2. After grouting is completed, it can quickly achieve sealing without waiting for the grout to solidify, thus speeding up the construction period. Compared with the traditional grouting process, this embodiment of the present invention does not require the setting of a stop valve for grout control, which simplifies the operation process and reduces the construction cost.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A grouting device for vertical joints of composite wind turbine tower segments, characterized in that: The device includes a lifting component (3), a base (4) is installed on the top of the lifting component (3), the base (4) includes a top plate (41), a clearance hole (410) is provided on the top plate (41), an operating space is provided below the top plate (41), a quick-insertion plate (5) is placed on the top surface of the top plate (41), a clearance hole (50) is provided on the quick-insertion plate (5), a pad (6) for contacting the bottom end of the pipe segment (1) is placed on the top surface of the quick-insertion plate (5), a clearance hole (60) is provided on the pad (6), a grouting pipe (7) extending into the grouting joint (2) is passed through the clearance hole (410), the clearance hole (50) and the clearance hole (60), and a grouting joint (8) is installed at the bottom of the grouting pipe (7).

2. The vertical joint grouting device for hybrid wind turbine tower segments according to claim 1, characterized in that: The base (4) also includes a bottom plate (40) located below the top plate (41), and a column (42) is vertically fixed between the bottom plate (40) and the top plate (41). The top of the lifting component (3) is connected to the bottom plate (40).

3. The vertical joint grouting device for hybrid wind turbine tower segments according to claim 1, characterized in that: The quick-connect plate (5) has a flat blade around the second clearance hole (50).

4. The vertical joint grouting device for hybrid wind turbine tower segments according to claim 1, characterized in that: The lifting component (3) is a jack.

5. The vertical joint grouting device for hybrid wind turbine tower segments according to claim 1, characterized in that: The pad (6) is a flexible rubber sheet.

6. The vertical joint grouting device for hybrid wind turbine tower segments according to claim 1, characterized in that: The grout guide pipe (7) is a plastic pipe.

7. The vertical joint grouting device for hybrid wind turbine tower segments according to claim 2, characterized in that: The base plate (40) and top plate (41) are made of steel plates, and the columns (42) are made of steel pipes.

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