Curvature detection device and method for drill rod

A technology of curvature detection and curvature, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of high difficulty and high cost of devices, and achieve the effects of scientific structure, fast acquisition speed, and avoiding rotation

Inactive Publication Date: 2014-06-18
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

Therefore, the cost of the device required for the implementation of this method is high and difficult

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  • Curvature detection device and method for drill rod
  • Curvature detection device and method for drill rod

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Embodiment 1

[0025] Embodiment 1: the present invention provides a kind of drill pipe curvature detection device, its structure is as follows figure 1 shown. It includes a drill pipe clamping part, a sensor transmission part and a control and calculation part; the drill pipe clamping part is provided with a working platform 1, a V-shaped block 2, a three-jaw chuck 4 and a stepping motor A5; a V-shaped block 2 1. The stepper motor A5 is fixed on the working platform 1 by bolts; the shaft of the stepper motor A5 is connected with the three-jaw chuck 4, and the three-jaw chuck 4 is used to clamp one end of the drill pipe 3, and the other end of the drill pipe 3 is placed On the V-shaped block 2; the drill rod clamping part is used to realize the positioning and clamping of the drill rod 3 and the rotation of the drill rod during multiple measurements.

[0026] The sensor transmission part is provided with a stepper motor B6, a shaft coupling 7, a ball screw 10, a linear guide rail 12, a scre...

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Abstract

The invention relates to a curvature detection device and method for a drill rod. The device comprises a drill rod clamping part, a sensor transmission part and a control and operation part, wherein a three-jaw chuck, a V-shaped block and a stepping motor A are arranged on the drill rod clamping part; the three-jaw chuck is used for clamping one end of the drill rod, and the other end of the drill rod is placed on the V-shaped block; a 2D (two-dimensional) laser sensor and a stepping motor B are arranged on the sensor transmission part; the control and operation part comprises a single-chip microcomputer and a host. The detection method comprises the following steps: acquiring the three-dimensional coordinate information of hemi-profile data points of a plurality of sections of the drill rod by using the 2D laser sensor; processing and calculating a section central point through the host, and fitting the central lines of n sections; determining the maximum curvature and coordinate value of a maximum bending point, comparing with the curvature limit value of the drill rod, judging whether the curvature of the drill rod is qualified or not, and providing a judgment result for a user. The device is scientific in structure, the detection method is simple, the curvature information of the drill rod can be obtained efficiently and accurately, and technical support is provided for the increase of the production accuracy of the drill rod.

Description

technical field [0001] The invention relates to a device and method for detecting the bending degree of a drill rod, in particular to a device and a detecting method for detecting whether the bending degree of the drill rod reaches the standard and providing bending information of the drill rod. Background technique [0002] With the development of drilling technology in our country, the depth of drilling construction is getting deeper and deeper, and the requirements for the precision of drill pipes are also getting higher and higher. Among them, the bending degree of the drill pipe is an important parameter of the precision of the drill pipe. During the drilling construction process, excessive bending of the drill pipe will lead to problems such as unstable drilling process and drilling position deviation. The current detection method of drill pipe bending basically relies on workers to use mechanical instruments to measure manually. This method is not only inefficient bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
Inventor 文国军谢辉王玉丹王嘉瑞陈汉吴川韩磊白江浩张奥东杨玲芝黄雷石欣雨张健
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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