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An electric drill joint structure

A joint structure and electric drilling tool technology, which is applied in the direction of drill pipe, drill pipe, earthwork drilling and mining, etc., can solve the problems of low reliability, poor sealing performance of drill pipe, and poor insulation performance, so as to ensure high voltage insulation Requirements, solve the effect of high voltage anti-breakdown and prevent water film

Active Publication Date: 2019-07-09
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current electric drill joint structure has the following problems: the sealing performance between the drill pipes is not good, the insulation performance is poor, and the reliability is not high

Method used

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  • An electric drill joint structure
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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0028] refer to Figure 1 ~ Figure 3 , an electric drill joint structure, including a plurality of drill rods connected together, each of which includes a shell 1, an inner rod 2, a scraper ring 9, and a hollow metal O-ring 11, wherein,

[0029] The inner rod 2 is located in the housing 1 and mounted on the inner wall of the housing 1;

[0030] One end of the inner rod 2 is provided with a gro...

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Abstract

The invention belongs to the field of electric drills, and discloses an electric drill joint structure. The electric drill joint structure comprises a plurality of drill pipes connected together; eachof the drill pipes comprises a shell, an inner rod, a dust scraping ring, and a hollow metal O-shaped ring; one end of the inner rod is provided with a groove so as to form a female head, the other end of the inner rod is provided with a male head matched with the female head, the side faces of the male head are separately provided with a first positive conducting electrode and a first negative conducting electrode, and the female head is provided with a second positive conducting electrode and a second negative conducting electrode; a gap in formed between the dust scraping ring and a gasket; the hollow metal O-shaped ring is installed at the end portion of the female head; and the side faces is provided with a plurality of first O-shaped rubber sealing rings. The electric drill joint structure can prevent water from entering the female head to enable the positive conducting electrodes and the negative conducting electrodes conductive pole for conduction, double protection can be achieved, high voltage insulation requirements are ensured, and a through hole is arranged at the position close to the conducting electrodes to prevent a water film from forming, so that the self-cleaning of the male and female heads can be realized.

Description

technical field [0001] The invention belongs to the field of electric drilling tools, and more specifically relates to an electric drilling tool joint structure. Background technique [0002] With the development of the economy, the number of oil and gas drilling has increased rapidly, which has also promoted the change of drilling methods, and the ultra-slim hole drilling method in the rig-free drilling technology is a revolution in drilling technology. The rig-less drill does not have a drilling rig and a derrick, which greatly improves the drilling environment, simplifies the drilling process, and promotes the automation of the drilling process. The drill rod of the electric drill tool transmits high-voltage electricity from the ground to the drill bit through the cable to drive the drill bit to rotate and break rock, which is an important part of the rig-free drilling device. [0003] However, the current electric drill joint structure has the following problems: the se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00E21B17/02E21B17/042
CPCE21B17/00E21B17/006E21B17/028E21B17/042
Inventor 胡友民徐超武敏建胡秀琨林宝泉
Owner HUAZHONG UNIV OF SCI & TECH
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