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Riser tensioning ring and pressure-bearing ring assembly welding method

A pressure ring and water riser technology, which is applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of difficult welding operation, poor welding quality, and low welding efficiency, so as to improve welding efficiency and reduce welding Difficulty, the effect of ensuring welding quality

Inactive Publication Date: 2019-09-24
BAOJI PETROLEUM MASCH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a welding method for the pressure ring of the tension ring of the riser, which solves the problems in the prior art that the welding operation of the pressure ring of the tension ring of the riser is difficult, the welding quality is not good, and the welding efficiency is low

Method used

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  • Riser tensioning ring and pressure-bearing ring assembly welding method
  • Riser tensioning ring and pressure-bearing ring assembly welding method
  • Riser tensioning ring and pressure-bearing ring assembly welding method

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0026] The present invention is a riser tension ring pressure bearing ring structure, such as figure 1 and figure 2 As shown, for cylinder body 1 and lug plate 2 including the pressure bearing ring, the inner diameter of cylinder body 1 and the pin hole of lug plate 2 are roughly machined respectively by conventional manufacturing methods to make auxiliary tooling, and then the cylinder body 1 and ear plate are completed by using the auxiliary tooling 2's full penetration welding, and finally processed as a whole.

[0027] In this embodiment, both the cylinder body 1 and the lug plate 2 are X80J forgings, such as image 3 , Figure 4 As shown, the structure of the auxiliary tooling in this embodiment includes a tooling base 3, a tooling support plate 5 and a tooling shaft 7, the tooling base 3 adopts a U-shaped welding structure, and the top surface of th...

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Abstract

The invention discloses a riser tensioning ring and pressure-bearing ring assembly welding method. The method specifically comprises the steps that a cylinder is firstly placed horizontally, all sets of lug plates are combined through pin shaft penetrating, positioning welding is carried out for fastening, and process supports are arranged at the opening positions of all sets of lug plates in a spot welding manner; a tool support plate is loaded into the cylinder, a pressing plate is used for pressing, and then penetrating of a tool shaft is achieved; then an assembly piece is wholly lifted to a roller frame, and an electric heating device is arranged on the inner side of the cylinder through a support plate weight reducing hole; a pressure bearing ring is rotated, and an manual arc welding method is used for symmetrically and alternatively conducting welding on the lug plates of the pressure bearing ring at the flat welding position; and finally, a pressure bearing ring assembling piece is lifted away from the roller frame, the tool support plate and the process supports of the lug plates are removed, entering-furnace quenching and tempering treatment is carried out, and then the process is finished. The method reduces the welding difficulty, improves the welding efficiency and ensures the welding quality.

Description

technical field [0001] The invention belongs to the technical field of offshore oil drilling equipment, and in particular relates to a welding method for a pressure-bearing ring of a riser tension ring. Background technique [0002] When the riser is working, the riser tensioner provides top tension to the riser system, and the riser tensioner ring is the key load-bearing device connecting the riser tensioner and the riser telescopic device, which carries all The weight of the riser pipe string is also used as the terminal discharge mechanism of the choke and kill pipeline, the mud pressurization pipeline and the hydraulic pipeline. [0003] As an important part of the integral tensioning ring, the pressure ring includes the cylinder body and the lug plate, both of which are X80J forgings and welded with full penetration. Due to the large size of the cylinder, if it is placed on the platform for welding in a conventional way, the welds are all in the vertical welding positi...

Claims

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Application Information

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IPC IPC(8): B23K9/00B23K9/235B23K9/32
CPCB23K9/0026B23K9/235B23K9/32
Inventor 肖虎秦红英刘宏亮徐斌荣刘海峰李晓康张小龙
Owner BAOJI PETROLEUM MASCH CO LTD
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