Reactor coolant pump of nuclear power plant bearing oil bit switch check-up instrument

The utility model discloses a reactor coolant pump of nuclear power plant bearing oil bit switch check-up instrument, it is including simulation oil tank, visual level gauge and check-up return circuit, the oil level altitude variation scope of simulation oil tank is more than or equal to main pump motor bearing oil tank, is equipped with on the tank wall of simulation oil tank to take filling the oil pipe line and arranging the oil pipe line of valve, visual level gauge demonstrates the liquid level value in the simulation oil tank, the check-up return circuit is connected with waiting the reactor coolant pump bearing oil bit switch electricity that detects to be equipped with high-order alarm and low alarm ware. Compared with the prior art, the utility model discloses reactor coolant pump of nuclear power plant bearing oil bit switch check-up instrument has effectively simulated the true change of reactor coolant pump bearing oil tank and oil tank liquid level to utilize outside check-up return circuit to verify the function of oil level switch and the warning value of oil level switch, effectively solved the problem that the check-up of reactor coolant pump bearing oil bit switch is with high costs, the check-up degree of difficulty is big.