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

Authority / Receiving Office
JP Β· JP
Patent Type
Patents
Current Assignee / Owner
CHUBU ELECTRIC POWER GRID CO LTD
Filing Date
2022-10-20
Publication Date
2026-06-22

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

  • CN216412940U

  • JP1982121203A

  • JP1991004416A

  • JP2002237237A