Electro-hydraulic integrated layered polymer injection device, tubular column and use method

The invention discloses an electro-hydraulic integrated layered polymer injection device, a tubular column and a use method. The polymer injection device comprises a polymer injection switch and a flow regulation control device which are connected with each other, the flow regulation control device comprises an electric control mechanism and a body; the body is provided with a vertical channel and a transverse channel, the vertical channel comprises a main channel, an electric control mechanism mounting cavity, a hydraulic control pressing channel and a cable penetrating channel, and the transverse channel comprises a pressing inner channel; the electric control mechanism is mounted in the electric control mechanism mounting cavity, the electric control mechanism is electrically connected with the cable, and the electric control mechanism mounting cavity is communicated with the hydraulic control pressing channel through the pressing inner channel. The method has the characteristics of quick response and accu