The invention discloses a double-layer-pipeline-type
electricity generating device. The double-layer-pipeline-type
electricity generating device comprises impellers, a transmission device, an
electricity generating device body, an electricity storage device, double
layers of pipelines and a sealing ring. The transmission device is composed of a first transmission shaft, a
bevel gear transmission mechanism, a second transmission shaft, a bearing and a bearing seat. The electricity generating device body comprises a rotor, a
stator, an electric
brush and a motor shell. The electricity storage device comprises a storage battery, a storage battery shell, a current flowing-into port and an
electric energy output port. When a liquid flows through the pipelines, the impellers are driven to rotateto generate
kinetic energy, the
kinetic energy is input into the electricity generating device body through the transmission device, then the electricity generating device body converts the
kinetic energy into
electric energy to be stored in the electricity storage device, and domestic and industrial electricity is provided. The double-layer-pipeline-type electricity generating device is suitablefor a large transportation pipeline, parallel electricity generating systems are evenly arranged in the double
layers of pipelines, the multiple impellers generate electricity simultaneously, the electricity generating systems are separated from the liquid, the device is simple, efficient, safe, reliable and convenient to maintain.