Differential pressure driven speed-controllable pipeline robot

The utility model discloses a differential pressure driven speed-controllable pipeline robot, which belongs to the field of robots and comprises a driving module, a detecting module, a cleaning module and a universal joint module. The driving module comprises a front cavity, the head of the front cavity is connected with an umbrella-shaped leather cup mechanism through a flange, the tail of the front cavity is connected with a variable-diameter leather cup through a flange, the head of the cavity is provided with a valve speed regulator, the middle of the cavity is provided with a steel brush for cleaning, and a circuit control system is installed in the cavity. The main body of the detection module is a rear cavity, and a magnetic flux leakage detection mechanism, a supporting wheel set and an odometer wheel set are fixed on the cavity. The robot has the advantages that the leather cup can adapt to the inner diameter of a pipeline, a driving power source is not needed, the robot is divided into two parts thr