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Common cutting technology for spud leg main cord rack plates of self-elevating drilling platform

A technology of drilling platform legs and cutting technology, applied in welding equipment, gas flame welding equipment, metal processing equipment and other directions, can solve the problems of large amount of waste, many cutting processes, waste of raw materials, etc., to improve the utilization rate and reduce Energy consumption and the effect of improving work efficiency

Inactive Publication Date: 2015-12-16
TIANJIN HOIDI OFFSHORE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cutting of the rack plate adopts the flame cutting technology. The current cutting method first divides the raw material steel plate, divides the raw material steel plate into two, and then performs symmetrical cutting on both sides. This cutting process ensures the cutting quality requirements of the rack plate, but There are many cutting processes and a large amount of waste generated, resulting in a waste of raw materials

Method used

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  • Common cutting technology for spud leg main cord rack plates of self-elevating drilling platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Using the co-edge cutting technology of the jack-up drilling platform pile leg main chord rack rack plate of the present invention, two toothed plates are simultaneously lowered from the steel plate with a thickness of 120mm:

[0020] 1) Preparation

[0021] Place the steel plate 1 to be cut on the cutting tire frame and fix the position; use computer drawing technology to determine the co-edge cutting tooth profile curve and seam width, and make a cutting model; determine the appropriate cutting tip and corresponding cutting edge according to the computer drawing results Cutting speed, cutting air pressure and other cutting parameters.

[0022] 2) Material preheating

[0023] Preheat the steel plate 1 placed on the tire frame, the preheating temperature is 150°C, to prevent the deformation of the rack plate due to uneven heat during the cutting process, and reduce the influence of the heat generated by cutting on the cutting accuracy.

[0024] 3) Tooth cutting

[00...

Embodiment 2

[0027] Using the co-edge cutting technology of the jack-up drilling platform pile leg main chord rack rack plate of the present invention, two toothed plates are simultaneously lowered from the steel plate with a thickness of 135mm:

[0028] 1) Preparation

[0029] Place the steel plate 1 to be cut on the cutting tire frame and fix the position; use computer drawing technology to determine the co-edge cutting tooth profile curve and seam width, and make a cutting model; determine the appropriate cutting tip and corresponding cutting edge according to the computer drawing results Cutting speed, cutting air pressure and other cutting parameters.

[0030] 2) Material preheating

[0031] Preheat the steel plate 1 placed on the tire frame, the preheating temperature is 200°C, prevent the deformation of the rack plate due to uneven heat during the cutting process, and reduce the impact of the heat generated by cutting on the cutting accuracy.

[0032] 3) Tooth cutting

[0033] Th...

Embodiment 3

[0035] Using the co-edge cutting technology of the jack-up drilling platform pile leg main chord rack rack plate of the present invention, two toothed plates are simultaneously lowered from the steel plate with a thickness of 150mm:

[0036] 1) Preparation

[0037] Place the steel plate 1 to be cut on the cutting tire frame and fix the position; use computer drawing technology to determine the co-edge cutting tooth profile curve and seam width, and make a cutting model; determine the appropriate cutting tip and corresponding cutting edge according to the computer drawing results Cutting speed, cutting air pressure and other cutting parameters.

[0038] 2) Material preheating

[0039] Preheat the steel plate 1 placed on the tire frame, the preheating temperature is 300°C, prevent the deformation of the rack plate due to uneven heat during the cutting process, and reduce the impact of the heat generated by cutting on the cutting accuracy.

[0040] 3) Tooth cutting

[0041] Th...

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Abstract

The invention relates to a common cutting technology for spud leg main cord rack plates of a self-elevating drilling platform. The common cutting technology can reduce the cutting procedures on the premise of guaranteeing the cutting quality of the rack plates, meanwhile, reduces generation of waste materials, improves the raw material utilization ratio and therefore achieves the purpose of lowering the project cost. The difficulty lies in finding the position of a common cutting line of edge-sharing parts of the two rack plates and adjusting such cutting parameters as the size of a cutting nozzle, the cutting air pressure and the cutting speed according to the position of the cutting line to ensure that after finish of cutting of the edge-sharing parts, the demand on precision of tooth curves can be met. Therefore, the computer drawing technology is adopted to draw common cutting tooth curves and calculate the widths of stitches at the edge-sharing parts, and the appropriate cutting nozzle and the corresponding cutting speed and cutting air pressure are selected according to the computer drawing result.

Description

technical field [0001] The invention relates to the technical field of marine engineering drilling platform construction, in particular to a technology for co-edge cutting of main chord rack rack plates of jack-up drilling platform legs. Background technique [0002] The jack-up drilling platform is currently one of the most widely used equipment for oil and gas field exploitation in the world. It has the characteristics of low cost and can be used for all-weather drilling operations in various situations. The design and production level of the jack-up drilling platform directly determines the offshore oil and gas fields. The ability to extract resources. The jack-up drilling platform is mainly composed of three parts: the upper platform, pile legs, and solid pile structure, and the weight is often tens of thousands of tons. It also bears the impact of sea waves and sea wind, so the cutting and welding of pile legs have strict quality and precision requirements. The pile l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K7/00B23K7/10
CPCB23K7/008B23K7/105
Inventor 董学勇耿跃杰
Owner TIANJIN HOIDI OFFSHORE ENG
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