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Special flange for derrick upright posts and attaching method of special flange

A column and flange technology, which is applied in the field of special flanges for derrick columns and their bonding, can solve problems such as high cost, failure to meet production and construction needs, and large dependence on workers' skill levels, so as to improve bonding rate and welding The effect of high efficiency and flatness

Inactive Publication Date: 2015-03-04
NANTONG ZHENHUA HEAVY EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is expensive, highly dependent on the skill level of workers, and cannot meet the actual production and construction needs.

Method used

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  • Special flange for derrick upright posts and attaching method of special flange
  • Special flange for derrick upright posts and attaching method of special flange

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] like figure 1 and figure 2 As shown, the present invention discloses a special flange for a derrick column. The flange is connected between the upper column 1 and the lower column 2, and includes an upper flange plate 3 welded to the bottom of the upper column 1 and welded to the top of the lower column 2. The lower flange plate, the upper flange plate 3 and the lower flange plate are connected back to back, and the flange surfaces of the upper flange plate 3 and the lower flange plate 4 are fixedly connected by bolts 5; the upper flange plate 3 and the lower flange plate 4 are welded and fixed around the joint by the horse plate 6 .

[0018] The present invention also discloses a bonding method for realizing the bonding between the special flanges of the above-mentioned derrick column. The method is first to use a boring and milling machine to process the front and back sides of the upper flange plate 3 and the lower flange plate 4 to ensure smooth surfaces Then the...

Embodiment 2

[0022] In this embodiment, on the basis of Embodiment 1, spot welding is used to fix the joints of the upper flange plate 3 and the lower flange plate 4 with 6 spot welds. When welding, a symmetrical welding process is adopted. Weld from both sides at the same time. When welding, weld the joints around the joints between the horse plate and the upper and lower flange plates. Weld 3-4 times, then clean the root on the back and polish the surface of the base metal for 2- 3mm, take out the carburized layer.

[0023] In this embodiment, through the symmetrical welding process, the welding deformation can be effectively controlled, the bonding rate between the flange plates can be ensured, and the welding efficiency can be improved.

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Abstract

The invention relates to a special flange for derrick upright posts and an attaching method of the special flange. The flange is connected between an upper upright post and a lower upright post, and mainly comprises an upper flange plate welded with the bottom of the upper upright post, and a lower flange plate welded with the top of the lower upright post, wherein the upper flange plate is attached and connected with the lower flange plate in a back-to-back way, the flange surfaces of the upper flange plate and the lower flange plate are fixedly connected through screw bolts, and the periphery of an attaching seam of the upper flange plate and the lower flange plate is welded and fixed through a horse plate. According to an attaching method between flanges of the special flange for the derrick upright posts, firstly, a boring-milling machine is adopted for processing the front side and the back side of each of the upper flange plate and the lower flange plate, and the surface flatness is enabled to reach the drawing requirements; then, the two flanges are rigidly fixed through screw bolts and the horse plates arranged on the periphery. The special flange has the advantages that according to the special flange for the derrick upright posts and the attaching method of the flange, the welding deformation can be effectively controlled, the attaching rate among the flange plates is ensured, the cost is reduced, and the work efficiency is improved.

Description

technical field [0001] The invention relates to a special flange for a derrick column and a bonding method thereof, in particular to a special flange for a derrick column that can ensure that the bonding rate of the flange surfaces between the derrick columns meets the design requirements, and at the same time reduce costs and improve manufacturing efficiency and its bonding method. Background technique [0002] With the accelerated pace of ocean development, the development prospects of the ocean engineering equipment industry are getting brighter and brighter. As one of the mainstream products of the offshore engineering family, the jack-up drilling platform has naturally become the object of competition among various companies. The main structural part of the drilling platform, the derrick, is often compared to a "equipment" because of its high construction precision requirements and large welding deformation of the columns, which shows how difficult it is to manufacture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B7/18B23K5/08
CPCF16B7/182B23K5/08
Inventor 徐松
Owner NANTONG ZHENHUA HEAVY EQUIP MFG
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