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Overall-length diameter-expanding unit for medium-diameter submerged-arc welding pipe

A technology of submerged arc welded pipes and units, which is applied in the direction of cleaning hollow objects, chemical instruments and methods, cleaning methods and utensils, etc., can solve the problem of too much waste of power resources in diameter expansion units, achieve the elimination of messy internal stress, and ensure diameter expansion Quality, the effect of increasing the yield strength

Active Publication Date: 2016-02-03
SUNYO S&T CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large-scale expansion unit is used to expand the diameter of the medium-diameter submerged arc welded pipe, the power resources of the expansion unit will be wasted too much, just like a big horse-drawn cart

Method used

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  • Overall-length diameter-expanding unit for medium-diameter submerged-arc welding pipe
  • Overall-length diameter-expanding unit for medium-diameter submerged-arc welding pipe
  • Overall-length diameter-expanding unit for medium-diameter submerged-arc welding pipe

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Embodiment

[0035] Such as Figure 1-4 As shown, the present invention discloses a full-length expansion unit for medium-diameter submerged arc welded pipes. The entire expansion unit consists of a steel pipe inlet traverse vehicle 1, a front flushing station 2, a diameter expansion station 3, a rear flushing station 4, Steel pipe export traversing car 5, equipped with independent water system, lubrication system 6, hydraulic system 7, electrical system 8, to achieve the following action control: the mechanism of each station can be fine-tuned by single action; each station can also It can be used as an independent station to work alone; the three stations can also realize fully automatic joint work with the steel pipe inlet traversing car 1 and the steel pipe outlet traversing car 5.

[0036] Steel pipe inlet traversing vehicle 1, steel pipe outlet traversing vehicle 5: The car body is an integral structure, and the car body is equipped with a random hydraulic pump station and an electri...

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Abstract

The invention discloses an overall-length diameter-expanding unit for a medium-diameter submerged-arc welding pipe. The overall-length diameter-expanding unit for the medium-diameter submerged-arc welding pipe comprises a diameter-expanding unit body. The diameter-expanding unit body is composed of a steel pipe inlet transverse movement vehicle, a pre-washing station, a diameter expanding station, a post-washing station and a steel pipe outlet transverse moving vehicle. Meanwhile, an independent water way system, a lubricating system, a hydraulic system and an electric system are further arranged. The overall diameter-expanding unit conducts pre-washing, diameter-expanding and post-washing of the inner wall of the steel pipe and steel pipe transferring through electric, hydraulic and mechanical linkage, the diameter-expanding quality, the washing quality and the production efficiency are guaranteed, and a guarantee is provided for later processes.

Description

technical field [0001] The invention belongs to the field of diameter expansion of straight seam submerged arc welded pipes, and in particular relates to a full-length diameter expansion unit for medium-diameter submerged arc welded pipes with a pipe diameter of φ323.9 to φ762 mm and a pipe length of 8 to 12.5 m. Background technique [0002] In pipeline construction, long-distance oil and gas pipelines are developing in the direction of large-caliber high-pressure transmission and thick-walled submarine pipelines. More and more pipelines require the use of longitudinal submerged arc welded steel pipes. The straight seam submerged arc welded steel pipe is produced from whole plate raw materials or coiled plate raw materials and has only one axial straight weld. The LSAW pipe will generate internal stress during the forming and welding process, and the full-length diameter and roundness of the steel pipe after forming are irregular, and there are side bends and large knife be...

Claims

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Application Information

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IPC IPC(8): B21D39/08B08B9/032
CPCY02P70/10
Inventor 张昊羽赵东吴正东盛金周志伟吴哲
Owner SUNYO S&T CO LTD
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