A frequency conversion control system for an external oil pump group of a hydraulic coupling

By using an external oil pump group frequency conversion control system, the problem of unreliable lubricating oil supply in the hydraulic coupling during frequency conversion retrofitting was solved, achieving high reliability, low maintenance cost and strong compatibility, and ensuring the safe and stable operation of the equipment.

CN122407952APending Publication Date: 2026-07-17HOHHOT KELIN THERMOELECTRICITY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HOHHOT KELIN THERMOELECTRICITY CO LTD
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In frequency conversion retrofits, existing hydraulic couplings suffer from unreliable lubricant supply, high maintenance costs, and easily damaged built-in oil pumps, resulting in low system reliability and poor compatibility.

Method used

An external oil pump group frequency conversion control system is adopted, including a hydraulic coupler, working oil tank, external oil pump and control circuit. Through detachable connection and frequency conversion drive, the stability and flexibility of lubricating oil supply are ensured. An overflow valve and a dual-cylinder filter are set for pressure regulation. An oil pump design with one pump in use and one in standby is adopted to improve reliability.

Benefits of technology

It improves the reliability of lubricant supply and system compatibility, reduces maintenance complexity and cost, avoids equipment damage caused by lubricant interruption, and enhances system safety and flexibility.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122407952A_ABST
    Figure CN122407952A_ABST
Patent Text Reader

Abstract

A kind of frequency conversion control system of external oil pump group of fluid coupling, including, fluid coupling, working oil tank, external oil pump, control circuit, detachable connection between each component;External oil pump outlet is connected fluid coupling by oil outlet pipe, provides the lubricating oil of fluid coupling;The lubricating oil flowing out in fluid coupling is accessed working oil tank by oil return pipe;Working oil tank is connected with the import of external oil pump by oil inlet pipe;Control circuit acquires oil pressure and uses frequency conversion drive output drive oil pump, adjusts its working frequency and output pressure;High reliability, maintenance is convenient, strong compatibility, safety is promoted, avoid the damage of equipment caused by lubricating oil interruption.
Need to check novelty before this filing date? Find Prior Art