Knitting device and knitting method for carbon-carbon throat liner preform

A technology of prefabricated body and throat lining, which is applied in the direction of braided fabrics, textiles and papermaking, etc., to achieve the effects of large voids, reduced flow resistance, and less glue content

Active Publication Date: 2021-10-08
XIAN YINGLIKE ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a carbon-carbon throat liner preformed weaving device and weaving method to solve the problems existing in the above-mentioned carbon rod-carbon fiber weaving 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
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  • Knitting device and knitting method for carbon-carbon throat liner preform
  • Knitting device and knitting method for carbon-carbon throat liner preform
  • Knitting device and knitting method for carbon-carbon throat liner preform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see figure 1 , this is a rigid rod-rod weaving method of 3D orthogonal carbon-carbon throat liner prefabricated body, all of which are braided with carbon rods, first fix one end of the Z-direction carbon rods on the weaving template, and then use carbon The rods are filled with a layer of flat rods that are orthogonal to the Z-direction carbon rods, and then filled with flat rods that are perpendicular to the Z-direction and the direction of the carbon rods on the upper layer is 90° flat rods, and the cycle is repeated, and finally a 3D three-dimensional prefabrication body. A carbon rod with a square cross-section is used in the Z direction, and a carbon rod with a rectangular cross-section is used in the two mutually orthogonal plane directions. Orthogonal 3D rigid rod-rod knitting machine, including the machine body, vertical rod tray, flat rod insertion head, steel comb buckle and flat rod reel, and the flat rod insertion head includes a lateral movement servo mec...

Embodiment 2

[0052] see figure 1 , this is a rigid rod-rod weaving method of 4D carbon-carbon throat lining prefabricated body. A layer of flat rods orthogonal to the carbon rods in the Z direction is filled, and then the flat rod insertion head is rotated 60°, and then a layer of carbon rods perpendicular to the Z direction is inserted, and the cycle is repeated, and finally a 4D three-dimensional prefabricated body is weaved. The carbon rods with regular triangular cross-sections are used in the Z direction, and the carbon rods with rectangular cross-sections are used in the three plane directions of 120° to each other. The length and width of the rectangular cross-section are determined according to the mechanical requirements of the product. The 4D rigid rod-rod knitting machine includes a machine body, a vertical rod tray, a flat rod insertion head, a steel comb buckle and a flat rod reel, and the flat rod insertion head includes a lateral movement servo mechanism and a longitudinal m...

Embodiment 3

[0059] see figure 1 , 5 6. This is a hard rod-rod weaving method using a 3D or 4D carbon-carbon throat lining prefabricated body with improved vertical rods. All carbon rods are used for weaving. First, one end of the Z-direction carbon rod is fixed on the weaving template Then, the flat rods perpendicular to the Z-direction carbon rods are inserted layer by layer with carbon rods in the horizontal order, and finally a three-dimensional prefabricated body completely woven with hard rods is woven.

[0060] First calculate the theoretical gap according to the 3D or 4D hard rod-rod weaving structure described in Embodiment 1 and Embodiment 2, then cut the filling blocks 20', 21', 22' of corresponding size with a transverse carbon rod, and according to a certain The position is bonded to the vertical rod to make an improved new vertical rod. The 3D orthogonal hard rod-rod woven packing blocks 20', 21' are cubes, and the 4D hard rod-rod woven packing blocks 20', 21', 22' are poly...

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 knitting device and knitting method for a carbon-carbon throat liner preform. The knitting device comprises a machine body, a flat rod reel, a vertical rod, a flat rod, a vertical rod tray, a flat rod insertion head, a knitted body pressing mechanism, a rotating mechanism and a vertical rod conveying mechanism; the flat rod reel, the knitted body pressing mechanism and the flat rod insertion head are all arranged on the machine body; the flat rod is wound on the flat rod reel and penetrates through the flat rod insertion head; the vertical rod is arranged on the vertical rod tray; the vertical rod conveying mechanism is arranged at the bottom of the vertical rod tray; the rotating mechanism is arranged at the bottom of the vertical rod conveying mechanism; and the vertical rod and the flat rod form a knitted body. When liquid phase densification is carried out, a hard rod-rod knitted preform can be placed in a vacuum impregnation container, vacuumizing is carried out firstly, then asphalt is injected, and then heating and pressurizing are carried out for a certain time, so that all gaps can be filled with the asphalt through the gaps in the edges and corners of a carbon rod. The smooth surface of the carbon rod can reduce the flowing resistance of asphalt liquid, and asphalt permeation during liquid phase densification is facilitated.

Description

technical field [0001] The invention belongs to the technical field of manufacturing composite material solid rockets, and in particular relates to a weaving device and a weaving method of a carbon-carbon throat lining prefabricated body. Background technique [0002] The nozzle throat liner is a key component of the solid rocket motor, which must withstand high temperature, high pressure, erosion of solid particles, and thermochemical erosion of high-temperature gas. The harsh working environment has a serious impact on the safety of throat lining components, and the safety of throat lining components is crucial to the normal and safe operation of solid rocket motors. With the advancement of science and technology, carbon-carbon composite nozzle throat lining has become the first choice for solid rocket motor throat lining material. The prefabricated body of carbon-carbon composite throat liner mainly adopts needle punching and three-dimensional weaving, and the performanc...

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): D04C3/00D04C1/06D04C3/48B29C70/44
CPCD04C3/00D04C1/06D04C3/48B29C70/44
Inventor 吉少波李杰李凤珍朱晓军李凤芝郝丽艳
Owner XIAN YINGLIKE ELECTRIC TECH CO LTD
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