Drilling device for underground embedded pipe orifice well of soil source heat pump system

Abstract

The invention discloses a drilling device for an underground embedded pipe orifice well of a soil source heat pump system and belongs to drilling equipment. The drilling device comprises a drill, a drill stem, a cycloid oil motor, a connection sleeve and a hydraulic transmission control system, wherein the connection sleeve is a hollow pipe; the upper end of the drill is moveably connected with the lower part of the connection sleeve; the upper part of the connection sleeve is fixedly connected with the lower end of the drill stem; the cycloid oil motor is arranged in the inner cavity of the drill stem; an output shaft of the cycloid oil motor is fixedly connected with the upper part of the drill; and inlet and outlet oil pipe joints of the cycloid oil motor are connected with the hydraulic transmission control system. The hydraulic transmission control system controls the cycloid oil motor to drive the drill to work, and when the drill rotates to drill a well, the drill stem is motionless, so that the integration precision during working of the drill stem and the drill is improved; the cycloid oil motor of the same power is small in size, so that when the cycloid oil motor is arranged in the drill stem, the construction of the device is convenient and a relatively large torque can be output; and in comparison with the traditional mechanical transmission system, the hydraulic transmission control system has a simple structure and facilitates the adjustment to output rotation speed and output torque.

Description

technical field [0001] The invention relates to drilling equipment, in particular to a drilling device for underground buried pipe hole wells of a soil source heat pump system. Background technique [0002] Compared with ordinary water wells, oil wells and gas wells, the underground buried tube wells of the soil source heat pump system have the characteristics of small diameter and high collection accuracy. Usually, the drilling method is adopted, and the diesel engine drilling drill pipe and drill bit drilling are used to realize this. The process requires a complex mechanical transmission system. During the drilling process, a large amount of friction energy generated between the drill pipe and the well wall is consumed. Due to the heavy weight of the drill pipe, the drill pipe and the drill bit rotate at the same time, and the assembly accuracy is difficult to guarantee. , and the cost is very high, usually the underground borehole wells of the soil source heat pump syste...

AI Technical Summary

Problems solved by technology

[0002] Compared with ordinary water wells, oil wells, and gas wells, the underground pipe wells of the soil source heat pump system have the characteristics of small aperture and high assembly precision. They are usually realized by drilling with diesel engine drill pipes and drill bits. The process requires a complex mechanical transmission system. During the drilling process, a large amount of friction energy generated between the drill pipe and the well wall is consumed. Because the drill pipe is heavy, the drill pipe and the drill bit rotate at the same time, and the assembly accuracy is difficult to guarantee. , and the cost is very high, usually the underground pipe hole wells of the soil source heat pump system are distributed in the building complex, and usually the drilling equipment has great limitations

Images