Composite material pipe applicable to spiral key connection and producing method for composite material pipe

A composite material tube and spiral key technology, applied in the direction of slender elements, building elements, etc., can solve the problem of low connection strength, achieve uniform force distribution, retain continuity, and avoid large connection spaces.

Active Publication Date: 2015-05-06
XIAN KANGBEN MATERIAL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the shortcomings of low connection strength in the prior art, the present invention proposes a composite material pipe suitable for spiral key connection and its manufacturing method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite material pipe applicable to spiral key connection and producing method for composite material pipe
  • Composite material pipe applicable to spiral key connection and producing method for composite material pipe
  • Composite material pipe applicable to spiral key connection and producing method for composite material pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment is a kind of composite material tube suitable for spiral key connection. The composite material tube is to connect the inner tube 1 and the outer tube 3 through the screw key 3, the length L of the connection part is 100mm, and the diameter of the connection part is D is 70mm.

[0034] Both the inner tube 1 and the outer tube 2 are made of glass fiber prepreg and carbon fiber prepreg using the prior art. The tensile strength of the glass fiber prepreg is 300MPa, the resin content is 40%, and the thickness is 0.12mm; the tensile strength of the carbon fiber prepreg is 1000MPa, the resin content is 40%, and the thickness is 0.3mm. Both the inner tube 1 and the outer tube 2 are formed by a conventional winding process. The inner tube 1 has a wall thickness of 25 mm, and the outer tube 2 has a wall thickness of 20 mm.

[0035] There are two circumferentially uniform spiral grooves on the outer wall of the inner tube 1 and the inner wall of the outer tube 3...

Embodiment 2

[0045] This embodiment is a kind of composite material tube suitable for spiral key connection. The composite material tube is to connect the inner tube 1 and the outer tube 3 through the screw key 3. The length L of the connection part is 20mm, and the diameter of the connection part is D 10mm.

[0046] Both the inner tube 1 and the outer tube 2 are made of carbon fiber prepreg using the prior art. The tensile strength of the carbon fiber prepreg is 1000MPa, the resin content is 40%, and the thickness is 0.3mm. Both the inner tube 1 and the outer tube 2 are formed by a conventional winding process. The inner tube 1 has a wall thickness of 4mm, and the outer tube 2 has a wall thickness of 4mm.

[0047] There are two circumferentially uniform spiral grooves on the outer wall of the inner tube 1 and the inner wall of the outer tube 3 respectively. The inner diameter of the spiral key=the outer diameter of the inner tube-the cross-sectional height of the spiral key / 2; the oute...

Embodiment 3

[0057] This embodiment is a composite material pipe suitable for spiral key connection. The connection composite material pipe is to connect the inner pipe 1 and the outer pipe 3 through the spiral key 3, the length L of the connection part is 400mm, and the diameter of the connection part is D is 220mm.

[0058] Both the inner tube 1 and the outer tube 2 are made of glass fiber prepreg using the prior art. The tensile strength of the glass fiber prepreg is 300MPa, the resin content is 40%, and the thickness is 0.12mm. Both the inner tube 1 and the outer tube 2 are formed by a conventional winding process. The inner tube 1 has a wall thickness of 60 mm, and the outer tube 2 has a wall thickness of 60 mm.

[0059] There are two circumferentially uniform spiral grooves on the outer wall of the inner tube 1 and the inner wall of the outer tube 3 respectively. The inner diameter of the spiral key=the outer diameter of the inner tube-the cross-sectional height of the spiral key / ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
thicknessaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a composite material pipe applicable to a spiral key connection, and a producing method for the composite material pipe, wherein the composite material pipe comprises an inner pipe and an outer pipe; two spiral slots uniformly distributed in an annular direction are respectively arranged on inner walls of the inner pipe and the outer pipe, and the two spiral slots are equal in spiral direction and corresponding in position; both blanks of the inner pipe and the outer pipe are molded by a fabric tape winding machine; during winding, an tensile force of a fabric tape is 50N / m. The inner pipe and the outer pipe are obtained by putting the blanks into an oven, increasing temperature to 160 DEG C by a gradient means and then curing. The spiral slots are respectively processed on the inner pipe and the outer pipe. When the composite material pipe is used, connection between the inner pipe and the outer pipe is realized by mutually-corresponding spiral keys. Force distribution is comparatively uniform under an axial pulling force or a pressing force, thereby effectively avoiding damage to a main body caused by stress concentration because of adoption of a normal pin or a riveting manner. In comparison with a thread connection, reliability is improved by 80%, and a hidden danger caused by the connection by a metal connecting piece in a corrosive environment is effectively avoided.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a composite material pipe suitable for spiral key connection and a manufacturing method thereof. Background technique [0002] Composite coiled tubes are anisotropic, and have high tensile and compressive strengths in the axial and hoop directions. However, due to the interlayer structure of the composite material, there is a shortcoming of weak interlayer shear, which makes it difficult to guarantee the connection strength of the tube product. Therefore, how to design composite material winding pipe fittings and realize high-strength axial connection of composite material pipe products has become one of the core links of product use. [0003] At present, the widely used composite winding pipe fittings that can be connected include glass fiber pipe, carbon fiber pipe, glass fiber and carbon fiber composite pipe, glass fiber metal composite pipe, carbon fiber metal composite pip...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): F16S3/00B29C70/30B29C35/02B29C70/54
Inventor 贾晶卢彬周玉玺沈涛张增强李琴
Owner XIAN KANGBEN MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap