Connecting structure of fan mixing tower structure

Abstract

The utility model relates to a fan mixing tower structure connecting structure which comprises an upper prefabricated cylinder section and a lower prefabricated cylinder section which are stacked up and down, and a prefabricated part horizontal connecting sealing part arranged between the upper prefabricated cylinder section and the lower prefabricated cylinder section. The prefabricated part horizontal connection sealing part is a flat annular part, at least one metal sheet extending in the annular direction is arranged in the annular part, at least one upper annular protrusion is arranged on the upper end face of the annular part, and at least one lower annular protrusion is arranged on the lower end face of the annular part. The lower end face of the upper prefabricated cylinder section is provided with an upper embedding groove exactly containing the upper annular protrusion, and the upper end face of the lower prefabricated cylinder section is provided with a lower embedding groove exactly containing the lower annular protrusion. The prefabricated part horizontal connection sealing part is arranged between the upper prefabricated barrel section and the lower prefabricated barrel section to replace a traditional combination of a sealing gasket and sealant, on the basis that connection, leveling and sealing are achieved, the gluing process is omitted, influences of the weather environment are avoided, construction is more convenient, and efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine foundation structure, and in particular to a connection structure for a hybrid wind turbine tower structure. Background Technology

[0002] Wind energy, as a renewable energy source with great potential and mature development technology, is the main force in the development of new energy. Traditionally, wind turbines that convert wind energy into electricity have been supported by towers and operated high in the air.

[0003] The hybrid tower structure of wind turbines offers greater overall structural rigidity, providing significant advantages in high-shear-speed areas and low-wind-speed, high-tower scenarios, effectively reducing the operational amplitude of the unit throughout its lifespan. Furthermore, the use of prefabricated segments enables high production efficiency, convenient segment transportation, and rapid assembly and hoisting, cleverly solving the transportation and installation difficulties caused by increased wind turbine capacity and tower base diameter. Therefore, it is widely used in large-scale wind turbines with high power output, long blades, and tall towers.

[0004] The tower structure of a hybrid tower is constructed by assembling and stacking multiple tower sections, internally connected and tensioned by multiple prestressed steel strands. The tower section is typically composed of 4 or 2 precast segments forming a ring-shaped precast section, although some tower sections are directly fabricated as a single, integral ring-shaped precast component. During stacking, sealing gaskets are placed between the upper and lower precast sections, and epoxy resin sealant is applied. Generally, the sealant is applied to the upper surface of the lower precast section before placing the upper section on top. The sealant serves three purposes: connection, leveling, and sealing. However, this connection method is highly susceptible to weather conditions (rain, low temperatures), resulting in extremely low efficiency, equipment downtime, and impacts on the overall installation schedule. Furthermore, it requires manual high-altitude work, posing a certain degree of danger. In addition, due to the formwork, the upper edge of the precast segments is manually leveled (smoothed), resulting in a certain height difference. In addition, the thickness and smoothness of the adhesive applied manually are uneven. This causes local stress concentration at the contact point between the upper and lower precast segments after stacking. As a result, if the contact area is uneven (the adhesive is relatively thin) when the prestressed steel strands are tensioned later, they are very easy to crack. Repair is difficult and the demolition cost is too high. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a wind turbine hybrid tower structure connection structure with high construction efficiency and high flatness of the upper and lower prefabricated cylinder stacking.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a wind turbine hybrid tower structure connection structure, the innovation of which is: including

[0007] The upper and lower precast cylinder sections are stacked on top of each other, and the precast components are horizontally connected and sealed between the upper and lower precast cylinder sections;

[0008] The prefabricated horizontal connection seal is a flat ring-shaped component. The ring-shaped component has at least one metal sheet extending in the ring direction. The upper end face of the ring-shaped component has at least one upper annular protrusion, and the lower end face of the ring-shaped component has at least one lower annular protrusion.

[0009] The lower end face of the upper precast cylinder section is provided with an upper fitting groove that just accommodates the upper annular protrusion, and the upper end face of the lower precast cylinder section is provided with a lower fitting groove that just accommodates the lower annular protrusion.

[0010] Furthermore, the upper annular protrusion and the lower annular protrusion have different diameters.

[0011] Furthermore, the upper or lower precast cylinder is formed by several precast tube segments arranged in a ring.

[0012] Furthermore, the cross-sectional width of the annular component is 300~600mm, and the thickness is 6~30mm.

[0013] Furthermore, the annular component is an elastic component made of rubber, nylon, or other high-molecular-weight elastic polymers.

[0014] The advantages of this utility model are: by setting a prefabricated horizontal connection sealing element between the upper and lower prefabricated cylinder sections to replace the traditional combination of sealing gasket and sealant, the process of applying sealant is eliminated while achieving connection, leveling and sealing. Therefore, it is not affected by weather conditions, making construction more convenient and efficient.

[0015] The upper and lower annular protrusions on the upper and lower sides of the annular component respectively engage with the upper fitting groove of the upper precast cylindrical section and the lower fitting groove of the lower precast cylindrical section, enabling rapid positioning and installation of the annular component with the upper and lower precast cylindrical sections. This ensures the fixed position of the annular component with the upper and lower precast cylindrical sections and further improves construction efficiency.

[0016] The metal sheet built into the ring component is designed to improve the stability and reliability of the ring component itself, reduce the deformation of the ring component, improve the shear strength of the ring component, and the metal sheet can also disperse a certain amount of stress, avoiding the stress concentration problem that occurs between the upper and lower precast cylinder sections after stacking.

[0017] The ring-shaped component is made of rubber, nylon or other high-molecular elastic polymers, which gives the ring-shaped component a certain degree of elasticity. This ensures the flatness of the subsequent upper and lower precast cylinder sections after stacking, reduces the risk of stress concentration due to flatness issues, and lowers the risk of cracking of the upper and lower precast cylinder sections. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the connection structure of the wind turbine hybrid tower structure of this utility model. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] like Figure 1 The wind turbine hybrid tower structure shown includes an upper precast cylindrical section 1, a lower precast cylindrical section 2, and a precast horizontal connection seal.

[0021] The upper precast tube segment 1 and the lower precast tube segment 2 are stacked on top of each other, and the upper or lower precast tube is formed by several precast tube segments surrounding a ring.

[0022] A horizontal connecting seal for the precast components is disposed between the upper precast cylindrical section 1 and the lower precast cylindrical section 2. The horizontal connecting seal is a flat annular component 3, and at least one metal sheet 33 extending along the annular direction is embedded in the annular component 3. In this embodiment, there are three metal sheets 33, and the metal sheets 33 are made of steel. The design of the metal sheets 33 embedded in the annular component 3 is to improve the stability and reliability of the annular component 3 itself, reduce the deformation of the annular component 3, improve the shear strength of the annular component 3, and the metal sheets 33 can also disperse a certain amount of stress, avoiding the stress concentration problem that occurs between the stacked upper precast cylindrical section 1 and the lower precast cylindrical section 2.

[0023] The upper end face of the annular component 3 has at least one upper annular protrusion 31, and the lower end face of the annular component 3 has at least one lower annular protrusion 32. In this embodiment, there is one upper annular protrusion 31 and two lower annular protrusions 32. The upper annular protrusions 31 and the lower annular protrusions 32 are distributed in a triangular shape in cross-section. The lower end face of the upper precast cylindrical section 1 is provided with an upper fitting groove 11 that just accommodates the upper annular protrusion 31, and the upper end face of the lower precast cylindrical section 2 is provided with a lower fitting groove 21 that just accommodates the lower annular protrusion 32. The upper annular protrusion 31 and the lower annular protrusion 32 on the upper and lower sides of the annular component 3 respectively engage with the upper fitting groove 11 of the upper precast cylindrical section 1 and the lower fitting groove 21 of the lower precast cylindrical section 2, thereby enabling the rapid positioning and installation of the annular component 3 with the upper precast cylindrical section 1 and the lower precast cylindrical section 2. This ensures the fixed position of the annular component 3 with the upper precast cylindrical section 1 and the lower precast cylindrical section 2, preventing displacement such as swaying of the annular component 3 after installation, and further improving construction efficiency.

[0024] The upper annular protrusion 31 and the lower annular protrusion 32 have different diameters. In this example, the diameter of the upper annular protrusion 31 is smaller than that of the lower annular protrusion 32. By designing the upper annular protrusion 31 and the lower annular protrusion 32 with different diameters, the fit between the annular part 3 and the upper prefabricated cylinder section 1 and the lower prefabricated cylinder section 2 can be better guaranteed, thereby improving the sealing effect.

[0025] The cross-sectional width of the ring part 3 is 300~600mm, and the thickness is 6~30mm.

[0026] The annular component 3 is an elastic component made of rubber, nylon, or other high-molecular-weight elastic polymers. The use of rubber, nylon, or other high-molecular-weight elastic polymers for the annular component 3 gives it a certain degree of elasticity, which not only provides a sealing function but also ensures the flatness of the subsequent stacking of the upper precast cylinder section 1 and the lower precast cylinder section 2. This reduces the risk of stress concentration due to flatness issues and lowers the risk of cracking in the upper precast cylinder section 1 and the lower precast cylinder section 2.

[0027] When stacking the upper precast cylindrical section 1 and the lower precast cylindrical section 2, the lower precast cylindrical section 2 is placed by hoisting, and then the annular component 3 is placed on the upper end face of the lower precast cylindrical section 2, ensuring that the two lower annular protrusions 32 of the annular component 3 are fitted into the lower fitting groove 21 of the lower precast cylindrical section 2. Then, the upper precast cylindrical section 1 is placed on the annular component 3 by hoisting, and the upper fitting groove 11 of the upper precast cylindrical section 1 is aligned with the upper annular protrusion 31 of the annular component 3 and fitted, thus completing the stacking of the upper precast cylindrical section 1 and the lower precast cylindrical section 2. This stacking method, by setting the annular component 3 between the upper precast cylindrical section 1 and the lower precast cylindrical section 2 to replace the traditional combination of sealing gasket and sealant, eliminates the process of applying sealant, and avoids the phenomenon of work stoppage due to weather conditions, making construction more convenient and efficient.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fan tower structure connection structure characterized by: Comprising an upper precast cylinder segment and a lower precast cylinder segment arranged in a stacked manner, and a precast horizontal connecting seal arranged between the upper and lower precast cylinder segments; the precast horizontal connecting seal is a flat annular member, at least one metal sheet extending in the annular direction is arranged in the annular member, the upper end surface of the annular member is provided with at least one upper annular protrusion, and the lower end surface of the annular member is provided with at least one lower annular protrusion; the lower end surface of the upper precast cylinder segment is provided with an upper fitting groove for accommodating the upper annular protrusion, and the upper end surface of the lower precast cylinder segment is provided with a lower fitting groove for accommodating the lower annular protrusion.

2. The fan tower structure connection structure according to claim 1, characterized by: The diameters of the upper annular protrusion and the lower annular protrusion are different.

3. The fan tower structure connection structure according to claim 1, characterized by: The upper precast cylinder or the lower precast cylinder is formed by surrounding a plurality of precast pipe segments.

4. The fan tower structure connection of claim 1, wherein: The cross-sectional width of the annular member is 300-600 mm, and the thickness is 6-30 mm.

5. The fan tower structure connection of claim 1, wherein: The annular member is an elastic member made of rubber or nylon.

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