220 KV Transformer Sleeve With Openable Sealed Maintenance Structure
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Solution Overview
Problem
The existing 220 KV transformer sleeve is difficult to disassemble for maintenance, requiring complex processes and tools, and is prone to overheating, which shortens its lifespan and compromises its sealing functionality.
Innovation Solution
The 220 KV transformer sleeve incorporates a sleeve assembly with a sleeve brace and an adjustable part, along with a connecting assembly featuring a rotating part and a mobile part. This design allows for easier disassembly and assembly without removing the sleeve brace entirely, while rubber strips and sealing protrusions enhance sealing and prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sleeve is designed as a sealed metal structure, then sealing performance is improved, but disassembly complexity increases and maintenance becomes difficult
Solution Approach 1:
The sleeve is divided into a fixed sleeve body and a movable cover connected through a linkage mechanism. This segmentation allows the cover to be opened independently for maintenance while the sleeve body remains installed, resolving the contradiction between maintaining sealed structure integrity and enabling easy disassembly.
Solution Approach 2:
A dynamic linkage mechanism with gears, shafts, and trajectory plates is introduced to connect the cover and sleeve body. This dynamic system allows the cover to move between closed (sealed) and open (maintenance) positions, providing both reliable sealing during operation and easy access during maintenance.
2Ease of operation
If the sleeve is removed entirely for maintenance, then access to internal components is improved, but operation time and productivity are reduced
Solution Approach 1:
The sleeve structure is segmented into removable cover and fixed body portions. The cover can be opened independently to expose internal components for maintenance while the sleeve body remains installed on the transformer, eliminating the need to remove the entire sleeve and thus reducing operation time.
Solution Approach 2:
The cover is extracted as a separate movable component from the sleeve body. This extraction allows maintenance personnel to access internal components through the opened cover without removing the entire sleeve assembly from the transformer, significantly reducing downtime.
3Temperature
If the metal sleeve is exposed to continuous heat, then temperature monitoring is improved, but the metal decays rapidly and lifespan is shortened
Solution Approach 1:
The linkage mechanism components (gears, shafts, trajectory plates) are strategically positioned to create thermal zones. Critical components are located in areas with better heat dissipation, while the sleeve body maintains its heat-resistant properties for monitoring. This local quality distribution allows temperature monitoring while protecting components from excessive heat exposure.
Data Source
AI summary
The present invention discloses a 220 KV transformer sleeve. The sleeve includes a sleeve assembly and a connecting assembly. The sleeve assembly includes a sleeve brace, an adjustable part coupled with the sleeve brace. The connecting assembly includes a rotating part and a mobile part. The sleeve is secured on the transformer core body through screws, and the adjustable part can be opened through the connecting assembly. When maintenance is required, there is no need to dismantle the entire sleeve. The work efficiency is greatly improved. This minimizes inductance leakage and prevents eddy currents from occurring.