Split Wind Tower Sealing Structure for Precise Waterproof Assembly

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Solution Overview

Problem

The existing sealing and waterproof structures of large-diameter split wind turbine towers face challenges in accurate positioning and assembly, leading to gaps and water ingress, which compromises the safety and performance of the equipment.

Innovation Solution

A sealing and waterproof structure comprising an installation and guiding mechanism with U-shaped fixing plates and a sealing strip, along with a water collecting system, to ensure precise assembly and drainage of water through a pipeline system, preventing ingress of water, sand, and insects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional connection structures are used for split tower sections, then the assembly process becomes simpler, but positioning accuracy decreases and gaps are generated causing water ingress

Engineering Contradiction:
Improvepositioning accuracyVSAvoidconnection structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent introduces a connection structure comprising a first connection piece with a first connecting plate and a second connection piece with a second connecting plate. These connection pieces act as intermediaries between the tower sections, providing precise positioning features (positioning grooves, positioning bumps) that ensure accurate alignment and eliminate gaps, thereby preventing water ingress while maintaining manageable assembly complexity through modular design.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Strength

If the tower diameter is increased to improve bearing capacity, then the tower strength increases, but transportation becomes difficult

Engineering Contradiction:
Improvetower bearing capacityVSAvoidtransportation ease
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The patent divides the large-diameter tower into multiple separable sections that can be transported independently. The connection structure enables these sections to be assembled on-site with high precision through positioning mechanisms (positioning grooves, positioning bumps, and guide pins), ensuring that the segmented tower achieves the same structural integrity and bearing capacity as a monolithic tower while solving transportation constraints.

Inventive Principle:
Principle #1Segmentation

3Productivity

If rapid assembly is implemented for split tower sections, then assembly time decreases, but positioning accuracy and sealing performance deteriorate

Engineering Contradiction:
Improveassembly speedVSAvoidassembly precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The connection structure incorporates pre-designed positioning features (positioning grooves, positioning bumps, guide pins) that automatically align tower sections during assembly. This preliminary configuration of positioning elements ensures that even during rapid assembly, the sections achieve accurate alignment and proper sealing without requiring time-consuming manual adjustment, thus maintaining both speed and precision.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4130464B1Sealing waterproof structure of fragmented tower section and tower
Publication Date: 2025.12.31 CRRC WIND POWER(SHANDONG) CO LTD
  • EP4130464B1 patent drawingFigure 1
  • EP4130464B1 patent drawingFigure 2~3
  • EP4130464B1 patent drawingFigure 4~6

AI summary

The invention provides a sealing and waterproof structure of split tower section and a tower and belongs to the field of wind power generation, comprising a sealing strip and an installation guide mechanism, the sealing strip is arranged between longitudinal flanges on split tower pieces, and the installation and guiding mechanism comprises a first fixing plate and a second fixing plate; the first fixing plate is mounted on an inner wall face of the split tower piece, the second fixing plate is arranged on an inner wall face of the other adjacent split tower pieces, and the first fixing plate and the second fixing plate are detachably connected through a guide pin and can slide along the guide pin.