Circuit breaker insulating oil replenishment device and method

A portable insulating oil supply device with a manual pump and valved tube simplifies the replenishment process for circuit breakers, reducing labor and ensuring safe, efficient oil replenishment without powering off the circuit breaker.

JP7876935B2Active Publication Date: 2026-06-22CHUBU ELECTRIC POWER GRID CO LTD +1
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Patent Information

Application Number
JP2022168562
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-10-20
Publication Date
2026-06-22
Estimated Expiration
2042-10-20

AI Technical Summary

Technical Problem

Existing methods for replenishing insulating oil in oil-filled circuit breakers require laborious transportation and setup of pumps and equipment to the installation location, increasing the effort required for the process.

Method used

A portable circuit breaker insulating oil supply device comprising a container, manual pump, and a valved tube with multiple valves, allowing for easy connection and operation without the need to power off the circuit breaker, reducing the effort needed for oil replenishment.

Benefits of technology

The device and method provide a more efficient and less labor-intensive way to replenish insulating oil, allowing operation away from the circuit breaker and minimizing air mixing and backflow, thus reducing operational effort and ensuring safety.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a circuit breaker insulation oil replenishment device and method that requires less labor.SOLUTION: A circuit breaker insulating oil supply device 1 supplies insulating oil O to a circuit breaker CB that uses the insulating oil O. The circuit breaker insulating oil supply device 1 includes a portable can 2 containing the insulating oil O, a manual pump 4 that can supply the insulating oil O, and a tube 6 having a valve mechanism, which is a tube equipped with a valve mechanism 22 having one or more valves. The tube 6 having the valve mechanism is connected to the manual pump 4. The manual pump 4 is placed in the portable can 2.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

  • Non-power-cut liquid oil injection device for high-voltage circuit breaker

    CN216412940U

  • Supplement of insulating oil for electrical machinery and apparatus equipped with diaphragm type conservator

    JP1982121203A

  • Electric power switch

    JP1991004416A

  • Composite type hydraulic driving device

    JP2002237237A