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Cold hardening effect-based pipe punching and twisting-off device and method

A technology of cold work hardening and punching torsion, which is applied to the device for realizing broken pipes. The punching and torsion breaking device utilizes the brittle effect of steel cold hardening and the principle of large torque punching torsion to realize the division of submarine pipelines, which can solve the problem of low cutting efficiency. , high operating risk, high labor intensity and other problems, to achieve the effect of strong pipe diameter adaptability, reduced overall cost, and improved cutting automation

Pending Publication Date: 2020-08-25
SINOPEC SSC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the defects of low cutting efficiency, high labor intensity and high operation risk, which cannot meet the requirements of the submarine pipeline disposal operation at the present stage

Method used

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  • Cold hardening effect-based pipe punching and twisting-off device and method

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Experimental program
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Effect test

Embodiment １

[0019] A punching and twisting tube breaking device based on the cold work hardening effect is mainly composed of three parts: a tube fixer 2 , a tube combustion cooler 3 and a tube splitting puncher 4 .

[0020] The tube combustion cooler 3 includes a combustion chamber pushing cylinder 7, a combustion chamber 8, a fuse 9 and a cooling head 10; wherein the combustion chamber 8 is connected to the front end of the combustion chamber pushing cylinder 7, and is in the shape of a ring segment, and the fuze 9 is introduced into the combustion chamber. Inside the chamber 8; the inner end of the cooling head 10 surrounds the side of the combustion chamber 8 and is connected with the external cold medium.

[0021] The tube splitting twister 4 includes a punching claw pushing cylinder 12, a rotating slide rail 13 and a punching claw 14, wherein the rotating slide rail 13 forms a linkage with an external rotating drive mechanism.

[0022] The pipe fixer may be a caliper type pipe fixin...

Embodiment ２

[0028] A pipe punching and twisting device based on the cold work hardening effect mainly includes three parts: a pipe fixer 2 , a pipe combustion cooler 3 , and a pipe splitting puncher 4 . One of its features is that the pipe holder 2 is used to fix the pipe 1, and mainly includes a fixed claw pushing cylinder 5 and a fixed claw 6, and the fixed claw pushing cylinder 5 can push the fixed claw 6 to move radially. The second feature is that the tube combustion cooler 3 is used to fill the fuel 10, burn the heating pipe and cool it rapidly, mainly including the combustion chamber push cylinder 7, the combustion chamber 8, the combustion chamber fuze 9, the cooling head 11, and the combustion chamber 8 is filled with fuel , the cooling head sprays liquid nitrogen on the heating surface. The third feature is that the pipe splitting twister 4 can realize rapid rotation and is used for twisting the free end of the pipeline 1 to realize the relative displacement between the free end...

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Abstract

The invention discloses a cold hardening effect-based pipe punching and twisting-off device and method. The device comprises a pipe fixing device, a pipe combustion cooler and a pipe cutting punchingand twisting device. The pipe combustion cooler comprises a combustion cabin pushing cylinder, a combustion cabin, a fuse and a cooling head; and the pipe cutting punching and twisting device comprises a punching and twisting clamping jaw pushing cylinder, a rotary sliding rail and a punching and twisting clamping jaw, wherein the rotary sliding rail is in linkage fit with an external rotary driving mechanism. The method comprises the following steps that a pipeline is fixed by the pipe fixing device; the pipe combustion cooler and the pipe cutting punching and twisting device are fixed to thefree end of the pipeline, the combustion cabin is filled with fuel, the fuel is ignited through a fuse, rapid combustion is achieved, the pipeline is heated, and the cooling head rapidly sprays liquid nitrogen to the heating face to achieve rapid cooling; and the pipe cutting punching and twisting device rapidly rotates and punches and twists to break the pipeline. According to the device and themethod, submarine pipeline cutting is achieved through the steel cold hardening embrittlement effect and the large-torque impact torsion principle, the cutting automation degree and the pipeline cutting efficiency can be improved, and therefore the submarine pipeline dismounting cost is reduced.

Description

technical field [0001] The present invention relates to a device and method for breaking pipes by punching and twisting based on the effect of cold hardening, in particular to a method for splitting submarine pipelines by using the effect of cold hardening and brittleness of steel and the principle of punching and twisting with large torque, and using the method to realize A device for breaking a pipe belongs to the field of marine engineering. [0002] technical background [0003] With the deepening of offshore oil development, a large number of pipelines have been laid on the seabed to transport liquid materials such as crude oil and production water. Due to reasons such as the loss of the original function of the relying platform and the end of service life of the submarine pipeline, some submarine pipelines were abandoned and urgently needed to be dismantled. At present, the oxy-acetylene cutting method is mainly used to cut the submarine pipeline, that is, one end of t...

Claims

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Application Information

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IPC IPC(8): B23D79/00
CPCB23D79/00
Inventor 崔希君张爱恩魏羲蒙占彬崔青樊敦秋郭强田海庆李明朝
Owner SINOPEC SSC