220 KV Transformer Movable Sleeve Access Port for Easier Maintenance
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Solution Overview
Problem
The existing 220 KV transformer movable sleeves are difficult to disassemble, leading to cumbersome maintenance processes and potential metal aging due to heat generation, which reduces service life and affects sealing performance.
Innovation Solution
A 220 KV transformer movable sleeve design featuring a sleeve assembly with an access port and a connecting component that includes a rotating part, a moving part, and a driving part, allowing for the end cap to be automatically opened for maintenance without full disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the movable sleeve is designed as a sealed structure, then sealing performance is improved, but maintenance difficulty increases
Solution Approach 1:
The movable sleeve is divided into a sleeve body and a removable end cap. The end cap can be detached from the sleeve body to provide access to the internal cavity, allowing maintenance operations without compromising the sealed structure. The sealing ring remains in place to maintain sealing performance while enabling maintenance access.
2Ease of operation
If the entire movable sleeve is disassembled for maintenance, then access to internal components is improved, but maintenance time and complexity increase
Solution Approach 1:
The end cap is extracted as a separate removable component from the sleeve body. This allows maintenance personnel to remove only the end cap to access the internal cavity and components, rather than disassembling the entire movable sleeve. The sealing ring remains in the sleeve body to maintain sealing integrity.
3Reliability
If the movable sleeve remains assembled during operation, then sealing is maintained, but heat generation causes metal aging
Solution Approach 1:
The end cap is designed to be preliminarily positioned to provide access for temperature monitoring operations. This allows routine temperature checks without requiring full disassembly, enabling early detection of heat-related issues before metal aging occurs, while maintaining the sealed structure during normal operation.
Data Source
AI summary
Provided in the present invention is a 220 KV transformer movable sleeve for easy maintenance which includes a sleeve assembly and a connecting component. The sleeve assembly includes a sleeve and an end cap, and the access port is provided on the sleeve, the access port is matched with the end cap, and the connecting component includes a rotating part, a moving part and a driving part. The access port is arranged on the sleeve assembly, and the inspection can only be carried out by opening the access port during inspection, without dismantling the entire movable sleeve, and greatly improving the work efficiency. The rubber strip is combined with the metal sleeve. The method reduces the influence of magnetic flux leakage on the metal movable sleeve and prevents it from generating eddy current heating. Through the driving part, the end cap can be automatically opened, saving time and effort.