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Method for assembling super-large-diameter pressure steel pipes in whole joints

A technology of penstocks and ultra-large diameters, which is applied in the field of full-section assembly of super-large-diameter penstocks, which can solve the problems of long construction period, heavy workload, and high construction costs, and achieve the effects of saving construction investment, simple operation, and saving construction period

Active Publication Date: 2017-03-22
GEZHOUBA GRP NO 2 ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, formulating a practical, scientific and reasonable penstock joint installation process for penstock joints in different working conditions will have a great impact on the penstock installation period and key line control, and the above joint joint installations will take a long period of time and workload Big, construction cost is also high

Method used

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  • Method for assembling super-large-diameter pressure steel pipes in whole joints
  • Method for assembling super-large-diameter pressure steel pipes in whole joints
  • Method for assembling super-large-diameter pressure steel pipes in whole joints

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Embodiment Construction

[0023] Figure 1 to Figure 7 The serial numbers 1, 2, 3, 4, 5, 6, 6-1, 6-2, 7, 8, 9, 10, 10-1 respectively represent the water diversion tunnel, construction branch tunnel, installation track, cross track, pressure Steel pipe joints, penstocks, front penstocks, rear penstocks, universal wheel trolleys, displacement directions of penstock joints, water flow directions, temporary passage directions, and reserved construction passages.

[0024] In this embodiment, the super-large-diameter penstock steel pipe assembly method adopts the whole joint penstock joint, universal wheeled trolley, and cross track:

[0025] (1) The joint of the entire pressure pipe: the joint of the pressure pipe should be cut from the whole sheet, and it can be rolled after the groove is processed. Bend pipes and transition section pipe joints can also be selected as whole joints according to the actual working conditions on site, and straight pipes are suitable. It is consistent with other pressure ste...

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Abstract

The invention discloses a method for assembling whole adjusters of super-large diameter pressure steel pipes. The method comprises the steps that the adjusters of the pressure steel pipes are conveyed to mounting positions; a universal wheel type trolley is adopted to support the whole weight of the adjusters of the pressure steel pipes; one-time seam pressing and rounding are carried out on the adjusters of the pressure steel pipes, front pressure steel pipes and back pressure steel pipes; after the pressure steel pipes mounted subsequently are effectively located and spot-welding reinforced positions of front and rear circular seams of the adjusters of the pressure steel pipes are removed, the mounting circular seams of the adjusters of the pressure steel pipes are in clearance fit with the adjacent front pressure steel pipes and back pressure steel pipes; the universal wheel type trolley and the adjusters of the pressure steel pipes are shifted laterally towards the mounting axes of the pressure steel pipes overall; construction channels are reserved by the pressure steel pipes and the adjusters of the pressure steel pipes at this moment; after all the pressure steel pipes are mounted, the universal wheel type trolley is used for enabling the adjusters of the pressure steel pipes to overall return to pre-mounting positions along the shifting trail; and then welding is carried out. Mounting cost expenses can be reduced, the mounting progress can be accelerated, and mounting quality can be guaranteed.

Description

[0001] Technical field: [0002] The patent of the invention relates to the assembling technology of super large-diameter penstock straight pipes, gradient pipes, bent pipes, etc. without trimming. The installation needs to reserve the assembly of the construction channel. [0003] Background technique: [0004] At present, in the field of penstock joint installation, in order to speed up the construction progress, compress the work range and reduce the construction cost, different joint joint assembly methods have been researched and explored. For example, the technology of distinguishing and fitting joint tiles, the technology of joint tiles without trimming and bonding, and the technology of assembling joints and joints have all appeared in the installation and construction of various penstocks in hydropower stations; It is determined by the function of the reserved channel of the penstock joint. The construction purposes of the penstock joints are basically divided into t...

Claims

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Application Information

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IPC IPC(8): F16L1/024
CPCF16L1/024
Inventor 成自飞马玉芽向旭辉徐丽蒋萍魏玉荣廖延晖
Owner GEZHOUBA GRP NO 2 ENG
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