NOVELTY - The device has hydraulic oil pumps (3) whose outlets are connected with an oil inlet (R) of a combined valve (4). A high pressure oil outlet (W) of the valve is connected with an oil inlet of a pressure oil tank (5) with a high pressure oil outlet (M). The high pressure oil outlet is connected with an oil inlet of a wind-driven generator hydraulic control equipment, and an oil return port of the equipment is connected with an oil return opening (H) of an oil return tank to form an integrated pressure oil source device oil supply and oil return system.    USE - Integrated pressure oil source device for a vertical axis wind-driven generator hydraulic control equipment.    ADVANTAGE - The device performs intermittent oil supply by the pressure oil tank to avoid overflow of high pressure oil in the hydraulic oil pumps, so that the device has energy-saving effect. The bellow type respirator can withstand sand, salt fog and moisture, oil liquid environment in the oil return tank is isolated with atmosphere, which can effectively prevent influence of environment pollution on hydraulic oil in the oil return tank, and the hydraulic oil pumps can be started under no-load condition by the combined valve to protect a motor. The liquid level of the pressure oil tank is kept constant by the hydraulic oil pumps, and the pressure of the pressure oil tank is supplemented by an automatic air supplement unit to supplement pipeline leakage and keep starting pressure constant. The device utilizes an electric heater for ensuring normal work under low temperature condition. The side of the oil return tank is installed with a radiating board for reducing oil temperature. The device is provided with all types of instruments operating normally under a computer monitoring and under an unwatched condition.    DETAILED DESCRIPTION - The hydraulic oil pumps include two spiral pumps or container pumps of other type installed in series. The oil return tank is made of steel plates. The oil return tank is installed with a bellow type respirator (7) in a through hole that is on a top part of the oil return tank, where the respirator is a capsule made from flexible material such as plastic or rubber. The pressure oil tank is a welded pressure-resistant steel structure container.    DESCRIPTION OF DRAWING(S) - The drawing shows a front view of an integrated pressure oil source device.    Oil return opening (H)    High pressure oil outlet (M)    Oil inlet (R)    High pressure oil outlet (W)    Hydraulic oil pumps (3)    Combined valve (4)    Pressure oil tank (5)    Bellow type respirator (7)