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A method for assembling and manufacturing bottom parts of a large-size polyurethane insulation box for LNG ships

A component assembly and LNG ship technology, applied in the direction of connecting components, material gluing, mechanical equipment, etc., can solve problems such as air residue, difficult to correct, and affect product quality, and achieve high-precision quality requirements, improve production efficiency, and reduce wrong side effect

Active Publication Date: 2021-01-22
SHANGHAI JIAO TONG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since all the outer surfaces of the reinforced polyurethane standard insulation box have to be processed after aging, the original methods such as inkjet or barcode pasting cannot be applied to the manufacturing process of the reinforced polyurethane standard insulation box
Especially when carrying out the adhesive assembly of the rigid three-in-one sheet (RSB) with a length of 3030mm, a width of 990mm, and a thickness of 2mm, which is unique to the secondary insulation layer of the standard polyurethane insulation box in the form of Mark III, manual handling or semi-automatic The way of the spreader is very easy to cause misalignment that is difficult to correct, and due to the concave deformation of RSB formed during manual handling and assembly, air remains on the bonding surface between RSB and polyurethane board to form air pockets or cavities, and the connection strength And assembly accuracy is not up to standard, seriously affecting product quality

Method used

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  • A method for assembling and manufacturing bottom parts of a large-size polyurethane insulation box for LNG ships
  • A method for assembling and manufacturing bottom parts of a large-size polyurethane insulation box for LNG ships
  • A method for assembling and manufacturing bottom parts of a large-size polyurethane insulation box for LNG ships

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Effect test

Embodiment 1

[0044]This embodiment designs an assembly and manufacturing method suitable for polyurethane insulation boxes of LNG ships, especially large-sized MARK III polyurethane insulation boxes, and utilizes the high flexibility of manipulators and industrial robots to accurately complete the lower layer of MARK III polyurethane insulation boxes For the automatic assembly of each component, the relevant information such as the production date, batch, model, etc. of polyurethane boards, plywood and other components required to enter the assembly area, as well as raw materials such as adhesives, is automatically entered into the mark of the corresponding insulation box and stored in the data system In the middle, and has been reliably tracked throughout the entire production process, which greatly improves the quality monitoring and traceability of the insulation box manufacturing process.

[0045] A method for assembling and manufacturing a large-sized polyurethane insulating box for li...

Embodiment 2

[0073] A method for assembling and manufacturing bottom parts of a large-size polyurethane insulating box for an LNG ship, comprising the following steps:

[0074] (1) Code scanning process, scan the corresponding code of the polyurethane board or plywood, and input it into the system;

[0075] (2) Feeding process, placing the polyurethane board or plywood on the feeding conveyor line of the automatic glue spraying station;

[0076] (3) Automatic gluing process, cleaning the polyurethane board or plywood on the feeding conveyor line and then gluing the surface;

[0077] (4) The bottom part assembly process, the bottom plywood and the bottom polyurethane board of the polyurethane insulation box are assembled;

[0078] (5) RSB assembly process, the hard three-in-one sheet is assembled on the bottom polyurethane board;

[0079] (6) RSB rolling process, the upper surface of the hard three-in-one sheet on the bottom polyurethane plate is rolled;

[0080] (7) The overall correcti...

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Abstract

The invention relates to an assembling and manufacturing method of bottom layer components of a large-size polyurethane insulation box for an LNG ship. The method includes the following procedures ofa code scanning procedure, a feeding procedure, an automatic gluing procedure, a bottom layer component assembling procedure, an RSB assembling procedure, an RSB rolling procedure and an overall correcting procedure after assembling. Compared with the prior art, the assembling and manufacturing method of the bottom layer components of the large-size polyurethane insulation box for the MARK III type LNG ship is designed, manipulators or robots are used for automatically completing feeding, gluing and assembling of a bottom layer polyurethane board, a bottom layer veneer and an RSB, overall correction after assembling is achieved, the phenomena of misalignment and the like caused by manual assembling are greatly reduced, production efficiency is improved, and high-precision quality requirements of products are met.

Description

technical field [0001] The invention belongs to the technical field of liquefied natural gas ships, and relates to a method for assembling and manufacturing bottom parts of a large-size polyurethane insulating box used for LNG ships. Background technique [0002] Membrane cargo tanks are liquid cargo containment systems that account for more than 80% of large liquefied natural gas (LNG) ships. The insulation box is an important part to ensure the liquid cargo tank of the LNG ship. The reinforced polyurethane standard insulation box of the Mark III containment system is the core component of the film-type LNG ship containment system. It is highly standardized, highly prefabricated, The process is complicated and the manufacturing precision is high. Improving the production efficiency and controlling the manufacturing precision of the reinforced polyurethane standard insulation box are the key to the construction of LNG ships. [0003] The characteristic of polyurethane stan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B11/00
CPCF16B11/00F16B11/006
Inventor 孔谅张悦杨海澜傅琦俊金鑫周春立毛建楠冯炜杰曹恒
Owner SHANGHAI JIAO TONG UNIV
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