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A zero-negative Poisson's ratio metal skeleton composite flexible joint and preparation method thereof

A technology with a metal skeleton and negative Poisson's ratio, applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., can solve problems such as unsatisfactory displacement compensation and vibration reduction performance, limited use places, low flexibility, etc., to achieve Enhance the ability of impact resistance and displacement compensation, improve the effect of damage resistance and long working life

Active Publication Date: 2022-07-05
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low strength of the material itself, the use of this type of flexible pipe is limited, such as low flexibility in high-pressure and high-temperature piping systems, and the performance of displacement compensation and vibration reduction is not ideal.

Method used

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  • A zero-negative Poisson's ratio metal skeleton composite flexible joint and preparation method thereof
  • A zero-negative Poisson's ratio metal skeleton composite flexible joint and preparation method thereof
  • A zero-negative Poisson's ratio metal skeleton composite flexible joint and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] Example 1: refer to the attached Figure 1-9 As shown, a zero-negative Poisson's ratio metal skeleton composite flexible nozzle includes a flexible pipe body 2 and a port interface flange 1 arranged above and below the flexible pipe body. The flexible pipe body is composed of a plurality of The space pyramid-shaped structural units 5 are arrayed according to the circumferential direction, and each spatial pyramid-shaped structural unit 5 is vulcanized from a metal wire basic unit 51 and a rubber unit polymer layer 52. The shape of the rubber unit polymer layer is hollow and bottomless. Spatial pyramid to present zero negative Poisson's ratio mechanical properties.

[0034] The above-mentioned plurality of spatial pyramidal structural units are composed of a wire mesh skeleton 3 and a rubber polymer layer, the wire mesh skeleton layer 4 is composed of a plurality of wire basic units 51, and the rubber polymer layer is composed of a plurality of rubber polymer layers. Th...

Embodiment 2

[0051] Embodiment 2: On the basis of Embodiment 1, in this embodiment, the flexible pipe body is formed by installing a composite mold inside and outside the metal wire mesh skeleton layer and then pouring into the rubber polymer for vulcanization. Combined mold 7 and inner combined mold 8, the outer combined mold is provided with a plurality of pyramid cavities 71; the middle of the inner combined mold is provided with a support column 9, and the inner combined mold is provided with a plurality of pyramids 81 outside.

[0052] The basic unit of metal wire is located between the pyramid cavity and the pyramid body, and the dual-phase composite of the flexible nozzle is completed by vulcanization and molding of rubber polymer.

[0053] In this embodiment, the outer combined mold is provided with a buckle 72, and the outer combined mold is spliced ​​and surrounded by a plurality of outer molds to form a hollow cylindrical shape; the inner combined mold 8 is composed of an inner m...

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Abstract

The invention provides a zero-negative Poisson's ratio metal skeleton composite flexible nozzle and a preparation method thereof, comprising a flexible pipe body and port interface flanges arranged above and below the flexible pipe body, wherein the flexible pipe body is composed of multiple It is composed of three spatial pyramidal structural units, and each spatial pyramidal structural unit is composed of a metal wire basic unit and a rubber unit polymer layer to exhibit zero negative Poisson's ratio mechanical properties. The invention adopts the form of dual-phase composite material, which not only retains the superior mechanical properties of the metal skeleton, but also ensures that the flexible joint has sufficient rigidity and strength, and solves the problem that the flexible joint in the prior art is not resistant to high temperature, high pressure, high speed and other working conditions . In addition, the device adopts a special space pyramid structure, so that the wire mesh skeleton layer with the wire basic unit exhibits the mechanical properties of zero / negative Poisson's ratio, and improves the impact resistance, vibration and noise reduction, displacement compensation and other aspects of the pipe fittings. comprehensive performance.

Description

technical field [0001] The invention relates to a zero-negative Poisson's ratio metal skeleton composite flexible joint and a preparation method thereof. Background technique [0002] With the development of high performance of mechanical equipment, especially the technical requirements for vibration and noise reduction, high pressure resistance, and large deformation resistance of pipeline systems, the frequency of use of flexible nozzles is increasing, and the requirements for their comprehensive mechanical properties and safety and reliability are getting higher and higher. Come higher. There are mainly three types of existing flexible pipes, namely vacuum rubber pipes, plastic pipes and corrugated pipes. Under the conditions of high temperature, high pressure and large load impact, the working life of these three types of flexible nozzles is often lower than the rated life, and it is difficult to meet the technical requirements. [0003] In order to make the existing m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/08B29C39/10B29C39/26B29B11/04
CPCF16L11/08B29C39/10B29C39/26B29B11/04
Inventor 薛新吴芳邵一川陈小超廖娟
Owner FUZHOU UNIV