Assembly process of the helideck of the offshore platform
A technology for helidecks and ocean platforms, applied in transportation and packaging, ships used for aircraft, and ship parts, etc., can solve problems such as difficult to guarantee welding quality, speed up construction efficiency, facilitate paint repair work, and save production costs Effect
Active Publication Date: 2017-02-22
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology
Because the helideck surface is generally hung on the outside of the platform, when welding the inclined support and the helideck surface, the operator needs to build a scaffold at a height of more than 30 meters from the ground, which is not only dangerous to a certain extent, but also because the helideck surface needs to For overhead welding, the welding quality is difficult to guarantee
Method used
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Embodiment Construction
[0047] The present invention adopts following implementation steps:
[0048] The first step: clean up the site and level the ground;
[0049] The second step: if figure 1 As shown, the helideck 4 is built upside down on a flat ground, that is, the deck 4 is face down and the inclined support 3 is face up; the specific steps are as follows:
[0050] (1) Lay several deck surfaces 1 on the flat ground, and complete the splicing of the deck surfaces 1 by welding;
[0051] (2) Lay the beam grid 2 on the deck surface 1, and complete the splicing of the beam grid 2 and the docking of the beam grid 2 and the deck surface 1 by welding;
[0052] (3) Adopt welding mode to install oblique support 3 on beam grid 2; At this moment, the whole helideck 4 is constructed;
[0053] (4) if Figure 5 As shown, make the stand-up lifting point 9 of the helideck made of reinforcing pipe 5, retaining rope column 6, connecting pipe 7 and stiffener plate 8.
[0054] (5) if figure 2 As shown, on t...
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An assembly process of a helideck of an offshore platform includes the steps of 1, building the helideck on a flat ground by means of inversion, transporting the helideck to a painting shop, and performing overall sand-blasting painting; 2, transporting the helideck to an offshore platform assembly site; 3, hooking two cranes rested on two sides of the helideck; 4, lifting the cranes to raise the helideck to a set height; 5, lowing a hook of the crane on one side slowly, and stopping forward moving when the helideck turns to a set angle; 6, lowering the hood until that the helideck is turned to 100 to 120 degrees; 7, interchanging a deck top and an oblique support until that the helideck is turned; 8, lifting the helideck to the offshore platform. Since the upper surface of the helideck is flat, the helideck is inverted and built; building efficiency is greatly improved, and operating is safer and better in quality.
Description
technical field [0001] The invention relates to a general assembly process of a deck piece, in particular to a general assembly process of a helideck of an ocean platform. It belongs to the field of marine engineering construction. Background technique [0002] The helideck of the offshore platform, because of its special position and purpose on the offshore platform, its structure presents the characteristics of large vertical span and many oblique supports under the deck; during the construction of the offshore platform, the general assembly of the helideck There are generally two methods: one is the high-altitude bulk method, and the other is the ground upright construction method. Among them, the high-altitude bulk method, that is, the profiles and plates that constitute the helideck are transported to the top floor of the platform by a large crane for assembly and construction. Since the helicopter deck is located on the top floor of the platform, with a height of sev...
Claims
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IPC IPC(8): B63B9/00B63B35/50
Inventor 刘超宋峥嵘鹿胜楠陈品杨风艳李挺宫晨佘玥霞郭宁尹宝瑞
Owner CHINA NAT OFFSHORE OIL CORP