Self-generating electric heat tracing device for natural gas well

The invention provides a self-generating electric heat tracing device for a natural gas well. A front throttling device is arranged on a pipe wall at an incoming gas inlet, a pneumatic motor is fixedly arranged in the pipe wall through a fixing device, the pneumatic motor is fixedly connected with a transmission shaft, a transmission shaft flow guide ring is fixedly arranged on the transmission shaft and the transmission shaft is fixedly connected with a power generation device; the power generation device is connected with an electric heating device, the electric heating device is connected onto a gas pipeline and a rear throttling device is arranged at an incoming gas outlet. The self-generating electric heat tracing device for the natural gas well has the advantages that the running cost is extremely low, the explosion-proof performance and the safety performance are good, the environmental requirement is lower, the effect of on-load starting can be realized and the maintenance cost is low.