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Method for comprehensively detecting drilling depth travel of fully hydraulic drilling machine for coal mine

A drilling depth and comprehensive detection technology, which is applied in the directions of measurement, earthwork drilling and production, wellbore/well components, etc., can solve the problems of cumulative error of oil detection device and oil leakage, etc.

Active Publication Date: 2014-02-26
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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Problems solved by technology

The disadvantage of this method is that due to the huge resistance in the process of the stroke piston advancing back and forth, especially in the process of advancing forward, oil leakage will occur, resulting in cumulative errors in the oil circuit detection device.

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  • Method for comprehensively detecting drilling depth travel of fully hydraulic drilling machine for coal mine
  • Method for comprehensively detecting drilling depth travel of fully hydraulic drilling machine for coal mine

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Embodiment Construction

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0025] The method for comprehensively detecting the drilling depth of a fully hydraulic drilling rig for coal mines according to the present invention includes a platform moving stroke detection step, a pressure detection step, and a comprehensive judgment step based on the aforementioned two;

[0026] The moving stroke detection step of the platform is to use sensor technology to detect in real time the reciprocating stroke of the axially driven oil cylinder of the drill rod. When the single-rod double-acting oil cylinder moves to the bottom of the oil cylinder when the piston moves to the bottom of the cylinder, the platform moves to the end of the drill floor, and th...

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Abstract

The invention discloses a method for comprehensively detecting the drilling depth travel of a fully hydraulic drilling machine for a coal mine. The method comprises the following steps of: detecting the motion travel of a platform, namely detecting the travel of a drill rod which axially drives an oil cylinder to do reciprocating motion in real time by a sensor technology; performing pressure detection, namely arranging a pressure sensor at a liquid inlet and outlet of a bidirectional hydraulic drive motor, and detecting pressure at the inlet and outlet in real time; and performing comprehensive judgment on the basis of the previous two steps. By detecting the travel of the drill rod which axially drives the oil cylinder to do reciprocating motion and the pressure at the liquid inlet and outlet of the bidirectional hydraulic drive motor, the process of the drilling machine is intelligently identified and judged, so that drilling depth can be calculated accordingly; meanwhile, a real-time drilling parameter can be obtained by combining drilling time per meter in the drilling process, multi-mode identification and parameter calculation are successfully realized, and a new way is opened up for obtaining a drilling depth parameter of the fully hydraulic drilling machine for the coal mine.

Description

technical field [0001] The invention relates to a comprehensive detection method for detecting the drilling depth stroke of a full hydraulic drilling rig. Background technique [0002] Now the method for obtaining the hole depth parameter of the fully hydraulic drilling rig for coal mines is to determine the depth of the borehole by the total amount of hydraulic oil used in the process of promoting the oil cylinder process when the hydraulic drilling rig pushes the drill bit into the rod, as the publication number is CN101338667A, the application number This method is disclosed in the Chinese patent "Coal Mine Gas Discharge Borehole Depth Measuring Method and Measuring Instrument" 200810303703.6. The disadvantage of this method is that due to the huge resistance in the process of the stroke piston advancing back and forth, especially in the process of advancing forward, oil leakage will occur, resulting in cumulative errors in the oil circuit detection device. Contents of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/04
Inventor 吴银成李军于庆莫志刚黄强
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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