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Method of sealing half-hull lift stern shaft hole or sea chest

A subsea valve box and stern shaft technology, applied in ship parts, ship construction, ship design, etc., can solve the problems of stern shaft hole casting or outer bottom plate damage, low on-site construction efficiency, and large carbon planing and grinding workload. Achieve the effect of reducing welding workload, reducing carbon planing and grinding workload, and reducing construction costs

Active Publication Date: 2018-02-13
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of ship construction, it is necessary to seal and seal the half-ship floating stern shaft hole or the tight through hole of the seabed valve box. The bottom plate is directly welded for sealing (e.g. figure 1 shown), when using this sealing method, the welding workload is large, the follow-up dismantling process is many, the carbon planer grinding workload is large, and it is easy to cause damage to the steel casting of the tail shaft hole or the outer bottom plate. The removed sealing plate is inconvenient to recycle, and the workload Large and inefficient on-site construction increases the cost of shipbuilding. How to reduce shipbuilding costs and improve construction efficiency is a difficult problem in the process of shipbuilding

Method used

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  • Method of sealing half-hull lift stern shaft hole or sea chest
  • Method of sealing half-hull lift stern shaft hole or sea chest
  • Method of sealing half-hull lift stern shaft hole or sea chest

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Embodiment 1

[0025] Such as figure 2 , 3 As shown, the present embodiment provides a half-ship floating stern shaft hole or seabed valve box sealing test sealing method, including the following steps:

[0026] 1) Mark lines for installing bolts on the rear end surface 2 of the stern shaft hole or the outer bottom plate of the seabed valve box, and install several screw rods 4 according to the positions of the marked lines;

[0027] Preferably, the screw rod 4 is welded and fixed on the rear end surface 2 of the tail shaft hole or the outer bottom plate of the sea bottom valve box by stud welding to ensure the reliability of the connection.

[0028] 2) Select steel plate blanking to make the plugging plate 3 for plugging the stern shaft hole or the seabed valve box, and provide bolt holes corresponding to the screw rod 4 on the outer periphery of the plugging plate 3;

[0029] 3) Marking lines are drawn on the plugging plate 3 according to the size of the aperture of the stern shaft hole...

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Abstract

The invention relates to the technical field of shipbuilding, in particular to a method of sealing a half-hull lift stern shaft hole or sea chest; welding for the connection of a seal plate and a hullis optimized into bolt connection; the method has the advantages that amount of welding for mounting the seal plate and amounts of carbon gouging and polishing for removing the seal plate are decreased, damage due to a stern shaft hole steel casting (outer bottom plate) is decreased, mounting efficiency is improved, and the recycled seal plate and watertight rubber after using are reusable; the cost is lowered, expenses on the materials such as welding material, carbon rods and abrasive sheets are decreased, and the manpower cost is saved.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a sealing test and sealing method for a half-ship hoisting stern shaft hole or a seabed valve box. Background technique [0002] In the process of ship construction, it is necessary to block and seal the half-ship floating stern shaft hole or the through hole of the seabed valve box. The bottom plate is directly welded for sealing (e.g. figure 1 As shown), when using this sealing method, the welding workload is large, the follow-up dismantling process is many, the carbon planer grinding workload is large, and it is easy to cause damage to the steel casting of the tail shaft hole or the outer bottom plate. The removed sealing plate is inconvenient to recycle, and the workload Large and inefficient on-site construction increases the cost of shipbuilding. How to reduce shipbuilding costs and improve construction efficiency is a difficult problem in the process of shipbuilding....

Claims

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Application Information

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IPC IPC(8): B63B9/00
CPCB63B71/00
Inventor 周顺练博强
Owner CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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