Bevel gear set reversing underground pulse jet supercharging device

The invention provides a bevel gear set reversing underground pulse jet supercharging device capable of producing ultrahigh pressure pulse cavitation jet, and is applicable to increasing the speed of drilling a deep well and an ultra-deep well. The supercharging device comprises a bypass valve assembly, a power assembly, a reversing assembly and a supercharging cavitation assembly, and is a special underground supercharging tool for ultrahigh pressure pulse cavitation jet assisted drilling. The lower end of the device is directly connected with a drill bit. In normal drilling, a drilling fluid passes through a bypass valve to drive a screw motor to provide power for the underground supercharging device, and the rotational motion of the screw motor is enabled to be transformed into the up-and-down reciprocating motion of a plunger through the action of a sealed bevel gear set reversing mechanism, so that the purpose of pulse supercharging of one part of the drilling fluid is achieved. The ultrahigh pressure pu