1results about How to "Realize automatic switching function" patented technology

The utility model discloses a hydraulic turbine governor double-oil-pump automatic switching control circuit which comprises a direct-current air switch QA1, a first pump circuit breaker Q1, a second pump circuit breaker Q2, a first pump contactor QC1, a thermal relay FR1, a second pump contactor QC2 and a thermal relay element which are connected through a main loop and a control loop, under the condition that PLC control is not needed to be added, the double-pump automatic switching function is achieved through a hardware loop, and the double-oil-pump automatic switching control circuit is simple in structure and convenient to operate. Oil pumps are used in turn, excessive use and abrasion of a single pump are avoided, the service life of equipment is prolonged, continuous operation of the system is ensured, the optimal operation state is kept, and efficiency is improved.