The utility model provides an oil filtering
system of a
transformer, which can filter insulating oil of the
transformer. A
crude oil tank remote transmission liquid level meter, a
crude oil tank high liquid level switch, a
crude oil tank low liquid level switch and a crude
oil tank respirator are arranged on a tank body of the crude
oil tank, a crude
oil tank oil outlet valve is arranged on an oil outlet
pipe of the crude oil tank, and a crude oil tank oil
inlet valve is arranged on an oil inlet
pipe of the crude oil tank; a tank body of the clean oil tank is provided with a clean oil tank remote liquid level meter, a clean oil tank high liquid level switch, a clean oil tank low liquid level switch and a clean oil tank
respirator, an oil outlet
pipe of the clean oil tank is provided with a clean oil tank oil outlet valve, and an oil inlet pipe of the clean oil tank is provided with a clean oil tank oil
inlet valve; an oil outlet pipe of the vacuum
oil filter is connected with an oil inlet pipe of the crude oil tank and an oil inlet pipe of the clean oil tank, an oil inlet pipe of the vacuum
oil filter is connected with an oil outlet pipe of the crude oil tank and an oil outlet pipe of the clean oil tank, and an
oil filter oil outlet valve is arranged on the oil outlet pipe of the vacuum oil filter. A front oil filter oil
inlet valve, a flow switch, a coarse filter, a
screw pump, a
check valve and a rear oil filter oil inlet valve are sequentially arranged on an oil inlet pipe of the vacuum oil filter.