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Composite dot-matrix interlayer double-skin cylindrical shell structure with metal liner for bearing inner pressure and preparation process thereof

A composite material, metal lining technology, applied in the direction of metal layered products, synthetic resin layered products, lamination, etc. Complexity and other problems, to achieve the effect of large-scale production and automated production, less defects, and high bonding strength

Active Publication Date: 2018-04-10
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the above prior art, the present invention provides a metal-lined composite material lattice interlayer double-skin cylindrical shell structure and its preparation process under internal pressure, which can better solve the problems of existing composite materials. Sandwiched cylindrical shells cannot well realize the organic unity of high internal pressure strength, high stiffness and light weight, and the preparation process is complicated, and it is difficult to realize large-scale, batch and automated production, and the existing preparation process is rough and the preparation process prone to problems such as defects

Method used

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  • Composite dot-matrix interlayer double-skin cylindrical shell structure with metal liner for bearing inner pressure and preparation process thereof
  • Composite dot-matrix interlayer double-skin cylindrical shell structure with metal liner for bearing inner pressure and preparation process thereof
  • Composite dot-matrix interlayer double-skin cylindrical shell structure with metal liner for bearing inner pressure and preparation process thereof

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Embodiment 1

[0045] The composite material lattice interlayer double-skinned cylindrical shell structure containing metal lining under internal pressure of the present invention comprises: a thin-walled cylindrical metal lining, an inner skin, a lattice core and an outer skin, wherein the inner skin Both the outer skin and the outer skin are made of composite materials; according to the strength of the thin-walled metal-lined cylindrical shell under internal pressure, the inner skin is made of fiber winding; the lattice core includes corrugated ribs and isosceles trapezoidal foam strips, corrugated ribs The foam strips are evenly circled along the outer wall of the inner skin, and then fixed by the outer skin to meet the rigidity requirements of the internal pressure thin-walled cylindrical shell metal-lined composite material cylindrical shell; the corrugated ribs are made of composite materials; the foam strips and corrugated ribs The cavities fit without clearance; two adjacent foam stri...

Embodiment 2

[0057] The preparation process of a metal-lined composite material lattice sandwich double-skin cylindrical shell structure that withstands internal pressure in this embodiment includes the following steps:

[0058] Step 1: Wrap the thin-walled metal liner pipe 1 with a predetermined fiber layer on a winding machine to form an inner skin 2;

[0059] Step 2: Prepare a dot matrix interlayer. The interlayer is mainly composed of foam strips of two specifications and fiber cloth 5 arranged alternately, and five special tools are used to cooperate with each other and lay a circle along the inner skin 2. The specific process of interlayer preparation is as follows :

[0060] 1) Two types of isosceles trapezoidal foam strips 3 and 4 with equal numbers and different upper and lower bottoms are processed by a sawing machine, a total of N pieces (specification 1 and specification 2, N is an even number and N≧16)

[0061] 2) Fix the upper bottom of the foam strip 3 of specification one ...

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Abstract

The invention discloses a composite dot-matrix interlayer double-skin cylindrical shell structure with a metal liner for bearing inner pressure and a preparation process thereof, and relates to a preparation process of lightweight pressure bearing containers and pipelines with high automation level and large size. The preparation process of the structure aims at solving the problems that organic integration of high intensity, high rigidity and light weight cannot be well achieved on existing composite cylindrical shells, conventional preparation processes are complex, and batched production oflarge-scale structures is not achieved easily. The adopted preparation process includes the steps that the metal liner is wound with preset cellosilk on a winding machine to form an inner skin; a dot-matrix interlay core containing foam strips and corrugated ribs is laid; the outer wall of the dot-matrix interlayer core is wound with preset cellosilk to form the outer skin; the structure is placed in a solidifying stove for solidification to prepare the composite dot-matrix interlayer double-skin cylindrical shell structure with the metal liner.

Description

technical field [0001] The invention relates to a preparation process of a large-scale light-weight pressure-bearing container or a pipeline with a high level of automation, in particular to a preparation process of a composite material lattice interlayer double-skin cylindrical shell structure with a metal inner lining that withstands internal pressure. Background technique [0002] At present, pressure vessels in the petrochemical industry are developing in the direction of high parameterization, which requires higher and higher material strength and stiffness. In addition, the aerospace field has put forward requirements for high strength, high rigidity, light weight and no leakage for rocket fuel storage tanks. Based on this requirement, this patent establishes an all-metal-lined composite material lattice interlayer double-skin cylindrical shell structure and its preparation process. Its advantages are as follows: In terms of structure: ① Metal lining, you can choose a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/14B32B17/02B32B17/06B32B17/12B32B27/02B32B27/12B32B27/34B32B3/08B32B1/08B32B37/02
CPCB32B1/08B32B3/085B32B5/02B32B5/26B32B15/14B32B37/02B32B2307/718B32B2266/0214B32B2266/0242B32B2266/0235B32B2262/101B32B2262/106B32B2262/0269B32B2597/00B32B2439/00
Inventor 顾付伟朱晓磊方岱宁陆晓峰刘杨
Owner NANJING UNIV OF TECH
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