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Feeding mechanism for electric arc cutting tool electrode of deep water oil well casing

A tool electrode and oil well casing technology is applied in the field of deepwater oil well casing arc cutting tool electrode feeding mechanism, which can solve the problems of small arc cutting cutting force, etc., and achieves improved cutting speed, narrow slit and stable servo feeding process. Effect

Active Publication Date: 2012-06-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Arc cutting has the characteristics of high efficiency, small cutting force, and can process difficult-to-machine materials such as extra-hard, super-strong, and high-toughness. It can realize high-efficiency cutting of submarine casings. At present, there have been no reports at home and abroad.

Method used

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  • Feeding mechanism for electric arc cutting tool electrode of deep water oil well casing
  • Feeding mechanism for electric arc cutting tool electrode of deep water oil well casing

Examples

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Effect test

Embodiment Construction

[0011] see figure 1 . The deep-water oil well casing arc cutting tool electrode feeding mechanism of the present invention is mainly composed of a strip tool electrode 1, an outer arc guide wheel set 2, an inner arc guide wheel set 3, an outer linear guide wheel set 4, and an inner linear guide wheel set 5. Tool electrode fixing bolt 6, slider 7, lead screw nut 8, ball screw 9, coupling 10 and servo motor 11.

[0012] The rotating shaft of the servo motor 11 is connected with the ball screw 9 through the coupling 10, and the servo motor 11 drives the ball screw 9 to perform servo rotation; The reverse rotation drives the lead screw nut 8 to move up and down; the slider 7 is fixed with the lead screw nut 8 and moves up and down together with the lead screw nut 8; the tool electrode fixing bolt 6 fixes the strip tool electrode 1 on the slider 7 ; The outer linear guide wheel group (4) and the inner linear guide wheel group (5) are all made up of rollers with the same diameter....

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Abstract

The invention belongs to the technical field of petroleum drilling equipment, and relates to a feeding mechanism for an electric arc cutting tool electrode of a deep water oil well casing. The feeding mechanism comprises a banded tool electrode (1), an outer circular arc guide wheel set (2), an inner circular arc guide wheel set (3), an outer linear guide wheel set (4), an inner linear guide wheel set (5), a tool electrode fixing bolt (6), a slide block (7), a lead screw nut (8), a ball lead screw (9), a shaft coupling (10) and a servo motor (11). During electric arc cutting, the servo motor (11) is used for driving the ball lead screw (9) through the shaft coupling (10) and driving the lead screw nut (8) and the slide block (7) to drive the banded tool electrode (1) to perform serve feeding movement, and cutting operation is performed under the actions of high temperature and high pressure generated by electric arc discharge between the banded tool electrode (1) and the casing. The feeding mechanism disclosed by the invention has the advantages of simple structure, high cutting efficiency, and the like.

Description

technical field [0001] The invention belongs to the technical field of oil drilling and production equipment, and relates to an electrode feeding mechanism of an arc cutting tool for deep-water oil well casing. Background technique [0002] According to relevant laws and regulations, after the operating life of the offshore platform expires, if there is no other use, it must be abandoned and dismantled. This just needs to have special underwater cutting recovery tool to be operated by special operator. In the demolition of offshore platforms, the more mature technologies that can be used for underwater casing cutting mainly include concentrated energy cutting, chemical jet cutting, abrasive water jet cutting and mechanical cutting. [0003] The energy-gathering cutting technology mainly relies on the destructive effect of explosive blasting to break the casing, and the fracture is extremely irregular. The amount of explosives is not easy to control, and it will also endange...

Claims

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Application Information

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IPC IPC(8): B23K9/133B23K9/013
Inventor 刘永红田晓洁林荣桔蔡宝平王飞刘增凯
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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