Down-hole turbogenerator

The utility model discloses a well turbine generator, which comprises a machine body, a kinetic energy transforming device, a driving device and an electricity generating device; wherein, the machine body consists of one or more than one sleeves, which are fixed and connected; the kinetic energy transforming device comprises a flow-guide organ and a turbine rotor; the former is provide with a twisted vane outside of the surface and is fixed and arranged on the machine body; the latter is arranged outside of the surface of the machine body through a bearing and is arranged on one side of the flow-guide organ; the driving device comprises a driving axis, which is arranged inside of the machine body, a first torque transferring device, which is connected between the driving axis and the turbine rotor, and a second torque transferring device, which is connected between the driving axis and the electricity generating device; the stator of the electricity generating device is fixed and arranged on the machine body; the rotor of the electricity generating device is jointed with the driving axis through the second torque transferring device. The utility model does not need to pull out to exchange the battery so as to enhance the operation efficiency of the artesian well. The device is also good for the environment-protection.