Pressure relief device for oil-immersed transformer
By designing the valve core module and the oil-gas separation and treatment module, the compatibility and linkage issues of the pressure relief device for oil-immersed transformers were resolved, realizing graded pressure relief, oil-gas recovery and safety protection, thereby improving the safety and reliability of the transformer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG HAIJING NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing oil-immersed transformer pressure relief devices have poor adaptability and unstable linkage, making it impossible to simultaneously address both early intervention for minor pressure anomalies and rapid release for extreme pressure anomalies, and they also lack oil and gas recovery functionality.
It adopts a valve core module design, including a valve seat assembly, a two-stage linkage valve disc assembly, and an elastic loading assembly, to achieve staged pressure release. It is also equipped with an oil-gas separation and processing module, which achieves stability and delay control of the linkage structure through guide rods and delay sliders, and combines a spiral flow channel for oil-gas separation and recovery.
It achieves graded pressure release, reduces insulating oil waste, lowers maintenance costs, avoids safety accidents, improves the linkage stability and oil and gas recovery efficiency of the device, extends transformer life, and ensures safe and reliable power supply to the power system.
Smart Images
Figure CN122417627A_ABST