Mounting method for energy-saving conduit of ultra large crude carrier in block stage

An installation method and super-large technology, applied in transportation and packaging, ship parts, ships, etc., can solve problems such as crane coordination and installation difficulty, and achieve the effects of saving construction costs, improving construction efficiency, and shortening construction periods.

Active Publication Date: 2018-12-04
SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the energy-saving duct is installed on the hull at the dock section, but the energy-saving duct is located inside the propeller

Method used

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  • Mounting method for energy-saving conduit of ultra large crude carrier in block stage
  • Mounting method for energy-saving conduit of ultra large crude carrier in block stage
  • Mounting method for energy-saving conduit of ultra large crude carrier in block stage

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing.

[0040] The energy-saving conduit involved in the installation method of the ultra-large tanker energy-saving conduit of the present invention is an unclosed conical cylindrical structure. The outer diameter of the front end of the energy-saving conduit is 7176mm, the inner diameter of the rear end is 6100mm, and the length is 2968mm; In the subsection stage, the energy-saving duct consists of a semicircular port duct and a starboard duct, a central longitudinal bracket that splices the port duct and the starboard duct into one, and four pairs that cover the port duct and the starboard duct and are located on the mid-longitudinal bracket. The cover plates on both sides; the outer surfaces of the port duct and the starboard duct are respectively marked with the duct centerline and the shafting centerline and each has two pairs of lifting rings; the inner surface of the port du...

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Abstract

The invention discloses a mounting method for an energy-saving conduit of an ultra large crude carrier in a block stage. The mounting method for the energy-saving conduit of the ultra large crude carrier in the block stage comprises a conduit advanced total assembly stage, a shafting pre-aligning stage, an energy-saving conduit locating and mounting stage and an energy-saving conduit and propellershaft welding stage; the conduit advanced total assembly stage comprises the following steps of making a special jig frame, scribing a line on the jig frame, mounting a right half side conduit, mounting a central longitudinal bracket, mounting a left half side conduit, arranging temporary reinforcements at the front end and an opening of the energy-saving conduit; carrying out positioned weldingto weld butt joints of inner shell plates, the central longitudinal bracket and a cover plate, arranging a temporary reinforcement at the rear end of the energy-saving conduit, and cutting off allowance of a fin; and in the shafting pre-aligning stage, a center line of shafting is transferred to a propeller shaft external plate. According to the mounting method for the energy-saving conduit of theultra large crude carrier in the block stage, the energy-saving conduit mounting step is advanced to create a condition for staged boring of a propeller shaft hole; and therefore, the shipbuilding efficiency is effectively enhanced, and the shipbuilding cost is saved.

Description

technical field [0001] The invention relates to a stage-by-stage installation method of an energy-saving conduit of an ultra-large oil tanker. Background technique [0002] Transport ships, such as bulk carriers, oil tankers, and container ships, are the main force of freight ships. Reducing the energy consumption of transport ships is of great significance to shipbuilding companies and even the entire shipping industry. At present, the development of the ship shape of the transport ship is quite mature, and it is becoming more and more difficult to reduce the resistance and achieve the purpose of energy saving through the hull line design. The energy-saving duct is a hydrodynamic energy-saving device installed at the front of the propeller of a large transport ship. It increases the local water flow velocity by converging and dispersing the water flow in four directions to achieve energy-saving effects, and its fuel-saving rate reaches 8%. With the soaring international oi...

Claims

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Application Information

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IPC IPC(8): B63B9/00
CPCB63B71/00
Inventor 徐占勇邵丹
Owner SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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