A mechanical hydraulic torque converter for a horizontal well, comprising a hollow driving shaft, an upper outer shell, a driving shaft positioning shell, bearing assembly, a universal shaft outer shell, a universal shaft assembly, a stator outer shell with a screw stator, a hollow rotor, a middle outer shell, a torque separation assembly, a lower connector, and a confluence assembly;
- the hollow driving shaft is mounted and fixed in the upper outer shell through the driving shaft positioning shell and the bearing assembly;
- and the universal shaft assembly is mounted in the universal shaft outer shell, and two ends of the universal shaft assembly are respectively connected with the hollow driving shaft and the hollow rotor;
- the universal shaft assembly is provided with a diversion hole and a diversion cavity, a flow channel of the hollow driving shaft is communicated with the diversion cavity, and the diversion cavity is communicated with a gap between the universal shaft outer shell and the universal shaft assembly through the diversion hole;
- the hollow rotor is mounted in the stator outer shell, one end of the hollow rotor is connected and communicated with the torque separation assembly mounted in the middle outer shell, and a drainage hole is formed in the other end of the hollow rotor;
- and a flow channel of the hollow rotor is communicated with a gap between the hollow rotor and the stator outer shell through the drainage hole;
- a left end of the lower connector is provided with an outlet, and a right end of the lower connector is provided with a cavity communicated with the outlet;
- the confluence assembly is mounted in the cavity of the lower connector, one end of the confluence assembly is connected and communicated with the torque separation assembly, the other end of the confluence assembly is communicated with the outlet of the lower connector, and a confluence hole communicated with the cavity is formed in the confluence assembly;
- the upper outer shell, the universal shaft outer shell, the stator outer shell, the middle outer shell, and the lower connector are sequentially connected;
- the torque separation assembly comprises a left pump rotor conversion connector, a left pump shaft, a left end cover, a rotary sealing outer shell, a lining, a right pump rotor conversion connector, a right pump shaft, and a right end cover;
- the left pump rotor conversion connector, the left pump shaft, the lining, the right pump shaft, and the right pump rotor conversion connector are all axially provided with flow channels and are sequentially communicated;
- and the left pump shaft and the right pump shaft are respectively mounted in a left end and a right end of the lining, the lining is mounted in the rotary sealing outer shell, and the left end cover and the right end cover are respectively sleeved on the left pump shaft and the right pump shaft and are mounted on a left end and a right end of the rotary sealing outer shell;
- a left end of the left pump rotor conversion connector is connected with the hollow rotor, and a right end of the left pump rotor conversion connector is connected with the left pump shaft;
- and a left end the right pump rotor conversion connector is connected with the right pump shaft, and a right end of the right pump rotor conversion connector is connected with the confluence assembly;
- wherein the bearing assembly comprises a bearing moving ring, a lower baffle ring, an upper baffle ring, an upper sleeve, a bearing, a bearing static ring, and a bearing baffle ring, the bearing moving ring, the lower baffle ring, the upper baffle ring, the bearing, and the bearing baffle ring are sequentially sleeved on the hollow driving shaft, the upper sleeve is sleeved on the lower baffle ring and the upper baffle ring, and right ends of the upper baffle ring and the upper sleeve are both tightly attached to a left end surface of the bearing;
- the driving shaft positioning shell is sleeved on the bearing moving ring and is in threaded connection with an interior of the upper outer shell, and a left end of the driving shaft positioning shell is tightly attached to a left end of the upper sleeve;
- the bearing static ring is sleeved on the bearing baffle ring, and a left end of the bearing static ring is tightly attached to a right end surface of the bearing;
- and a right end of the bearing baffle ring is tightly attached to a left end of the universal shaft assembly.