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Seamless connection composite material pressure vessel structure and auxiliary molding tool thereof

A technology for composite materials and pressure vessels, which is applied in the field of seamless connection of composite pressure vessel structures and auxiliary forming tooling, which can solve the problems of damage tolerance, single wall thickness of the inner lining that cannot be locally reinforced, and lower lining, etc. Achieve the effect of reducing weight, increasing practical value and improving reliability

Active Publication Date: 2019-09-10
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a seamlessly connected composite material pressure vessel structure and its auxiliary forming tooling to solve the problem that the wall thickness of the inner liner proposed in the above background technology cannot be locally reinforced, and it is necessary to carry out the joint part of the head. Reprocessing, while welding forming often reduces the damage tolerance of the lining due to the existence of welding defects

Method used

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  • Seamless connection composite material pressure vessel structure and auxiliary molding tool thereof
  • Seamless connection composite material pressure vessel structure and auxiliary molding tool thereof
  • Seamless connection composite material pressure vessel structure and auxiliary molding tool thereof

Examples

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Effect test

Embodiment 1

[0028] A seamlessly connected composite pressure vessel structure such as figure 1 As shown, including the inner liner, the inner liner includes two symmetrically arranged left head 1 and right head 2 and a cylinder 3 located between the left head 1 and the right head 2, the left head 1 and the right head 2. Both have a straight edge 10 of the head. The outer wall of the outer end of the straight edge 10 of the head is provided with a sealing groove 6, and a sealing element 5 is arranged in the sealing groove 6. The sealing groove 6 is used to install the sealing element to ensure the sealing effect. The root of the side 10 is provided with an end surface groove 4, which is used to limit the leakage failure of the end of the cylinder 3 due to expansion and deformation. The outer surface of the left head 1 and the right head 2 is provided with a head connecting pipe 9 in the axial direction of the outer surface, close to the left seal. The outer wall of the head connecting pipe...

Embodiment 2

[0038] Such as figure 2 As shown, on the basis of Embodiment 1, the present invention provides an auxiliary forming tool for seamlessly connecting composite material pressure vessel structures, including threaded rods 14 for supporting and transmitting torque, and two head joints 9 There are left-handed different-diameter nuts 11 and right-handed different-diameter nuts 12 respectively threaded on the outside, the left-handed different-diameter nut 11 represents the winding support end, the right-handed different-diameter nut 12 represents the torque supply end of the winding system, the left-handed different-diameter nut 11 and the right-handed different-diameter nut Add an adjusting gasket 13 of appropriate thickness between the diameter nut 12 and the head connecting pipe 9 and press fit to ensure the sealing effect. 9 is a clearance fit, the two ends of the threaded rod 14 are respectively threaded with the left-handed reducing nut 11 and the right-handed reducing nut 12,...

Embodiment 3

[0048] On the basis of Embodiment 1, the present invention also provides an auxiliary molding tool for composite material pressure vessel structure, such as Figure 7 As shown, it includes a first conical head body 24 and a second conical head body 25 with axial joints 27 formed on the outer surfaces of the first conical head body 24 and the second conical head body 25 The conical surface 28 of the conical surface; the thin-walled cylinder part 3 that cooperates with the conical surface 28; the two axial joints 27 that are threaded with the threaded rod 14 and the first conical head main body 24 and the second conical head main body 25 A left-handed different-diameter nut 11 and a right-handed different-diameter nut 12, wherein the left represents the winding support end, and the right represents the torque supply end of the winding system. Add appropriate Adjust the thickness of the gasket 13 and press fit, thread the threaded rod 14 through the left-handed different diameter...

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Abstract

The invention relates to the technical field of seamless connection composite material pressure vessel structures, in particular to a seamless connection composite material pressure vessel structure and an auxiliary molding tool thereof. The structure comprises a liner, wherein the liner comprises a left sealing heads and a right sealing head which are symmetrically arranged, and a cylinder body positioned between the left sealing head and the right sealing head. The left sealing head and the right sealing head are provided with straight head sealing edges, wherein sealing grooves are formed in the outer wall of the outer end of the straight sealing head edges, and each sealing groove is provided with a sealing element. End surface grooves are formed in the root parts of the straight sealhead edges, and sealing head connecting pipes are arranged in the axial direction of the outer surface of the left sealing head and the outer surface of the right sealing head. The seamless connectioncomposite material pressure vessel structure has the advantages of being simple in structure, convenient to use, and capable of effectively improving the material utilization rate so as to further reduce the weight of the pressure vessel and improve the reliability of the pressure vessel; in addition, the axial direction continuity of the sealing heads and the cylinder body under an internal pressure condition can be realized by replacing a weld joint; finally, the sealing heads and the cylinder body can bear high-pressure liquid and high-pressure gas.

Description

technical field [0001] The invention relates to the technical field of seamlessly connected composite material pressure vessel structures, in particular to a seamlessly connected composite material pressure vessel structure and its auxiliary forming tooling. Background technique [0002] Lightweight pressure vessels can be used for storage containers with higher internal pressure levels (for example, gas storage containers and liquid storage containers), and are widely used in the fields of chemical industry, aerospace, and fuel storage tanks for new energy vehicles. With the continuous improvement of industrial and national defense equipment, composite material pressure vessels are developing in the direction of large size, high parameterization and lightweight, which put forward higher and higher requirements for materials, structures and efficient manufacturing processes. Composite wound metal-lined pressure vessels, as the main development direction of lightweight pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/06F17C13/00F17C13/06
CPCF17C1/06F17C13/00F17C13/06
Inventor 朱晓磊顾付伟陆晓峰陈亮方岱宁
Owner NANJING UNIV OF TECH