Hydraulic impactor

Abstract

The invention discloses a hydraulic impactor, and belongs to the field of hole bottom power machines. The hydraulic impactor is driven by a pressure rinsing liquid medium to work and comprises an upper joint, a flow distribution core tube, an outer tube, a flow distribution seat, a cylinder sleeve, a piston, a jump ring, a retaining sleeve, a first semi-circular clamp, a limit sleeve, a control valve, a plug, a punch hammer, a second semi-circular clamp, a spline sleeve and a drill bit. The impactor is simple in structure, small in volume loss and pressure loss and high in energy utilization rate, has the wide-spectrum working characteristics, can meet large ballistic work output requirements on the structure, can implement impact rotation drilling with rotation as main under the working condition with small flow, can implement impact rotation drilling with impacting as main under the working condition with large flow, improves the drilling footage speed in a multiplied manner, helps to reduce the construction cost of the fields of petroleum and water well drilling, mine and geological prospecting and the like, and particularly helps to accelerate the development and utilization ofnew energy dry hot rock.

Description

technical field [0001] The invention relates to a drilling / hole drilling tool for drilling rocks, which belongs to the field of hole bottom power machines, and can be applied to geological exploration, hydrology and water well drilling, oil drilling, geothermal wells and other rock and soil drilling, especially can be applied to deep dry Rapid drilling in hot rock. Background technique [0002] At present, in geological exploration, hydrology and water well drilling, oil drilling and geothermal well drilling, etc., in various drillings such as rapid drilling of deep dry hot rocks, hydraulic impactors can be used to realize hydraulic impact rotary drilling. , can increase the footage speed of drilling into hard rock, and is an effective drilling method to solve the problem of drilling into hard rock. However, this kind of hydraulic impact rotary drilling is mainly rotary drilling, supplemented by impact. For example, diamond rope coring impact rotary drilling is based on dia...

AI Technical Summary

Problems solved by technology

At present, this technology mainly enters the Chinese market in the form of technical services, but this kind of hydraulic impactor has a complex structure, many control and switching channels, and has high requirements for the driving flushing fluid. It needs to be equipped with solid control equipment to purify the flushing fluid, and the cost of use is high.

The stroke differential high-energy hydraulic down-the-hole hammer disclosed in the prior art (see CN201410756548 for details) and the high-energy impactor described in the valve-type high-energy hydraulic down-the-hole hammer (see CN201420513172 for details) have complex structures and many control and switching channels , the output piston rod is slender, and the structure is difficult to meet the requirements of large impact energy, and the practicability as a high-energy impactor is relatively poor

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