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Circular knitting method of composite material high-pressure container

A technology of high-pressure containers and composite materials, which can be used in knitting, weft knitting, textiles and papermaking, etc., and can solve problems such as insufficient hoop strength

Active Publication Date: 2021-09-10
XIAN YINGLIKE ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the filament winding process will form thicker stacks at the heads at both ends of the solid hair shell, and there is still insufficient hoop strength at this position and needs to be reinforced

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
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  • Circular knitting method of composite material high-pressure container
  • Circular knitting method of composite material high-pressure container
  • Circular knitting method of composite material high-pressure container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 , the present invention proposes a circular weaving method for the shell of a composite solid rocket combustion chamber, using a circular loom to replace the meal winding machine to weave the load-bearing structure of the high-pressure vessel, and controlling the opening of the warp yarn of the loom and the shaft of the mandrel through a software program Change the fabric structure and weft density, so that the strength of each part of the fabric in any direction can meet the requirements; install the mandrel on the axial movement mechanism, and firstly distribute the ends of the warp yarns evenly on the root of the head at one end of the mandrel Tighten the warp with cable ties, and then start circular weaving. The diameter of the circular fabric increases as the diameter of the mandrel increases. After weaving a layer of cylindrical surface, the main shaft stops rotating, and the shedding mechanism and weft insertion mechanism stop working. 1. The mandrel...

Embodiment 2

[0035] see figure 1 with image 3 , the present embodiment is a connection method between the composite material solid hair combustion chamber and the front and rear skirts 25 using a weaving process. After the weaving of the shell is basically completed by the method described in Example 1, when the weaving cylinder is woven by the loom about halfway, the front and rear skirts are respectively pressed onto the front and rear heads of the shell, and then Continue to weave cylindrically to hold the front skirt firmly, then reverse circular knit to hold the rear skirt firmly.

[0036] The oblique laying of the warp yarn layer on the surface of the cylindrical section can make the shell have torsion resistance, while the warp yarn parallel to the axis can make the shell have sufficient bending resistance.

[0037] The main axis direction of ordinary circular looms is perpendicular to the ground. In order to facilitate the weaving of products with relatively large length and dia...

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
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Abstract

The invention discloses a circular knitting method of a composite material high-pressure container. The circular knitting method comprises the following steps that firstly, the ends of warp yarns are uniformly distributed at the root of an end socket at one end of a core mold, and the warp yarns are tightened by using a ribbon; then circular knitting is started; then a shedding mechanism starts to normally move along with rotation of a main shaft of a circular knitting machine, meanwhile, the core mold moves reversely, circulation is conducted till the thickness of a fabric meets the requirement, and circular knitting is completed; and glue dripping, pressurizing, heating and curing are conducted on the structure subjected to circular knitting, and the composite material high-pressure container is obtained. The circular knitting machine is adopted for knitting the composite material high-pressure container, the spiral angles of all warp yarns flatly laid on the cylindrical surface relative to the axis of the core mold are the same, the spiral directions of the warp yarns of adjacent layers relative to the axis of the core mold are opposite, therefore, fiber cross bending caused by mutual overlapping does not exist between adjacent flatly laid warp yarn layers, and the mechanical property of high-strength fibers can be better exerted. The circular knitting method not only can be used for knitting a solid propellant rocket engine combustion chamber shell, but also can be used for producing composite material wings, large fan blades, telegraph poles and large high-pressure pipelines.

Description

technical field [0001] The invention belongs to the technical field of manufacturing high-pressure containers made of composite materials, and in particular relates to a circular weaving method for a casing of a solid rocket motor combustion chamber. Background technique [0002] Combustion chamber shells of composite solid rocket motors were mostly manufactured by high-strength fiber winding process in the past. The casing is both light and strong. However, the filament winding process will form thicker stacks at the heads at both ends of the solid hair shell, and there is still insufficient hoop strength at this position and needs to be reinforced. Contents of the invention [0003] The object of the present invention is to provide a method for circular weaving of composite high-pressure vessels to solve the above problems. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] A circular weaving method for a com...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C70/54D04B1/22
CPCB29C70/30B29C70/54D04B1/22B29L2031/7156
Inventor 吉少波李杰李凤珍朱晓军
Owner XIAN YINGLIKE ELECTRIC TECH CO LTD
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