Hole-wall self-adaptive reverse torsion device for coring and drilling in polar hot water

Abstract

The invention discloses a hole-wall self-adaptive reverse torsion device for coring and drilling in polar hot water. A plurality of sliding grooves are formed in the circumference of a device body, supporting sheets are embedded in the sliding grooves, one ends of the supporting sheets are fixed ends and are fixed connected to one ends of the sliding grooves, the other ends of the supporting sheets are free ends and can slide in the sliding grooves, and a water conveyance passage is formed in the device body. The supporting sheets are elastic bodies and made of elastic materials, the fixed ends of the supporting sheets are fixed to the bottoms of the sliding grooves, the free ends of the supporting sheets are connected to a middle shaft of a roller, the roller is arranged in the sliding grooves, the free ends of the supporting sheets can be driven by the roller to slide along the sliding grooves, helical springs are assembled between the fixed ends and the free ends of the supporting sheets, and knife edges are arranged at the outer edges of the supporting sheets. The hole-wall self-adaptive reverse torsion device has the beneficial effects that the diameter of a reverse torsion sheet can be automatically adjusted to be suitable for different apertures, the efficiency of drilling and coring is greatly improved, and the situation that a hot water hose is twisted along with rotation of a drill tool and even broken is completely eliminated.

Description

[0001] The invention relates to a hole wall self-adaptive anti-twist device, in particular to a hole wall self-adaptive anti-twist device for polar hot water core drilling. Background technique [0002] At present, the combination of hot water drilling technology and mechanical core drilling technology can quickly obtain ice cores at the bottom of the ice sheet. Finally, a mechanical coring device including a screw motor, a coring tube and a coring bit is used to replace the hot water drilling tool for coring work, sharing the same set of surface equipment and hot water delivery hose, and using hot water to drive the screw motor to rotate to drive the drill bit to rotate At present, this technology has been widely used in the field of polar drilling. However, due to the large diameter of the boreholes obtained by hot water drilling, different hole sizes, and extremely irregular shapes, the conventional mechanical core drilling technology used The size of the anti-torsion devic...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the conventional anti-twist device currently used in the polar drilling process cannot guarantee effective drilling, and may cause the hot water hose to kink or even break with the rotation of the drilling tool. Hole wall self-adaptive anti-torsion device for polar hot water core drilling

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