A diamond geological core drill bit using heat pipe to dissipate heat

Abstract

The invention discloses a diamond-geological coring drill bit using heat pipes to dissipate heat, and belongs to the technical field of geological drilling. The drill bit comprises a drill bit matrix, a steel body, a water opening, the heat pipes and heat conduction columns, the drill bit matrix is connected with the steel body and is composed of a matrix working layer and a matrix transition layer, and steel body threaded holes are firmed in the steel body in the axial direction; the water opening is formed in the drill bit matrix and separates the drill bit matrix into a plurality of blade wings, and matrix threaded holes which extend along the blade wings in the axial direction are formed in the portions, corresponding to the steel body threaded holes, of the blade wings; each heat pipe is divided into a evaporation section and a condensation section, each evaporation section is installed in the corresponding matrix threaded hole, each condensation section is installed in the corresponding steel body threaded hole, and a working medium is injected into the heat pipes; the heat conduction columns are in threaded connection with the heat pipes to form a heat transfer part, the heat conduction columns are installed in the matrix threaded holes, and the heights of the heat conduction columns are equal to the height of the matrix working layer. According to the diamond-geological coring drill bit using the heat pipes to dissipate the heat, through the structure design of the drill bit, the double heat dissipation and cooling effect is achieved, and cooling of the bottom of the diamond drill bit matrix is accelerated.

Description

technical field [0001] The invention belongs to the technical field of geological drilling, in particular to a diamond geological core drill bit which utilizes a heat pipe to dissipate heat. Background technique [0002] In the field of geological drilling, the abnormal wear rate of diamond drill bits is as high as 30% to 40%, and most of the abnormal wear is thermal wear. Therefore, accelerating the heat dissipation during the working process of the drill bit, strengthening the heat transfer of the drill bit, and quickly reducing the temperature of the drill bit matrix are difficult problems that people have been working hard to overcome. When the diamond bit drills into the rock formation, the working layer of the matrix continuously rubs against rocks and cuttings, and a large amount of frictional heat accumulates at the bottom of the working layer of the matrix, causing the temperature of the grinding part of the bit to rise rapidly, and the excessive temperature acceler...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that in the prior art, when the diamond drill bit is drilling into the rock formation, the working layer of the matrix is ​​constantly rubbed against rocks and cuttings, and a large amount of frictional heat is accumulated at the bottom of the working layer of the matrix, which causes the temperature of the grinding part of the drill bit to rise. High, too high temperature speeds up the wear of the drill bit, and even leads to technical problems such as burning drills and other in-hole accidents. A diamond geological core bit that uses heat pipes to dissipate heat is provided.

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