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Penetration piece doubling plate pre-tightness manufacture and check method in ship section outfitting

An inspection method, a technology of penetrating parts, applied to ship components, ship construction, transportation and packaging, etc.

Inactive Publication Date: 2011-07-13
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the welding of the penetrating parts with doubler plates in the outfitting is a circular weld, and the damage area to the coating is relatively large. The coating repair work will not only affect the submission progress of the cabin coating, but also affect the achievement of PSPC coating. standard

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention should not be limited by this.

[0021] We take the deck pipe penetrations of the ballast tanks in the section of the ship's cargo area as an example to illustrate the manufacturing and inspection method of the double plate pre-tightness of the penetrations, including the following steps:

[0022] ①Compile the processing standards for the tightness of the screw holes of the double panels of the cabin penetration parts of various specifications, and the screw hole specification is M10.

[0023] ② According to the requirements of the drawing, arrange and produce the panel of the penetrating part with M10 tightness screw holes, and put it into the corresponding section outfitting pallet management table. If the pipe penetration requires hot-dip galvanizing, it is necessary to use bolts to protect the M10 tight screw holes, and re...

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Abstract

The invention discloses a penetration piece doubling plate pre-tightness manufacture and check method in ship section outfitting, which comprises the following steps that: a penetration piece doubling plate with the screw hole specification of M10 is manufactured and classified into an outfitting bill of material management list, and is preassembled in a section manufacturing stage; a doubling plate manufacturer processes tightness screw holes according to a tightness screw hole standard, a marine pipe fitting factory manufacture a penetration piece, and a section manufacturer performs section preassembly; and two screw holes on the doubling plate are respectively provided with a pressure gage and a compressed air pipe through a special connecting piece, the welding line tightness state is checked, and the two M10 screw holes are subjected to repair welding and are detected by a dye penetrant inspection method to meet the tightness requirement so as to achieve the penetration piece doubling plate welding line pre-tightness. The welding line of the doubling plate of the penetration piece is subjected to a tightness test before section coating, so that the completeness of the section coating is improved; therefore, a coating damage area of a ship space is reduced, the coating construction period is shortened, and the new performance standard for protective coatings (PSPC) is met.

Description

technical field [0001] The invention relates to the construction industry of ship sections, in particular to a method for manufacturing and inspecting pre-tightness of double plate weld seams of penetrating parts in the section outfitting of ship coating areas with special requirements. Background technique [0002] At present, the form of doubler plates is widely used in the pre-outfitting penetrations of ships in sections. The weld tightness of the penetrations cannot be operated due to the failure to form a closed space in the sectioning stage. Moreover, the distribution of outfitting penetrating parts is relatively scattered. If problems are found after the tightness test is carried out in an airtight cabin, repairing will not only affect the painting effect, but also require a large amount of work related to repairing, and the construction environment is also poor. The damage to the coating caused by the welding of the outfitting is very unfavorable for the ship coatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/00
Inventor 陆辉文李湘吕迪郄金波严培康
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP
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