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Corrosion-resisting fuel tank with double-layer structure

A double-layer structure and corrosion-resistant technology, which is applied in the field of space navigation and its aircraft or equipment, can solve problems such as tank damage, coating peeling, and inner layer erosion of the tank, so as to reduce the impact of stress concentration and improve service life , the effect of reducing residual stress

Inactive Publication Date: 2012-11-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if only a layer of corrosion-resistant material is coated on the inner surface of the storage tank, the coating may be peeled off due to stress, which will cause the inner layer of the storage tank to be directly eroded by the storage liquid, resulting in damage to the storage tank

Method used

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  • Corrosion-resisting fuel tank with double-layer structure
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  • Corrosion-resisting fuel tank with double-layer structure

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0017] As shown in the figure: a corrosion-resistant double-layer structure fuel tank, including an inner tank and an outer tank, the inner tank is made of anti-corrosion materials, and the outer tank is made of high-strength materials As a result, the inner tank is evenly attached to the inner wall of the outer tank. The outer storage tank is formed by segmental pressing and welding; the inner storage tank is formed by centrifugal processing.

[0018] The strong corrosion-resistant material of the inner layer is aluminum alloy material, and the outer layer is made of aluminum alloy series material with higher strength.

[0019] The outer structure of the storage tank adopts the segmental pressing and welding forming method of the general storage tank.

[0020] Such as figure 2 As shown in Fig. 1, after the section processing of the outer structure of the storage ...

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Abstract

The invention relates to a corrosion-resisting fuel tank with a double-layer structure, belonging to the field of astronavigation and aircrafts or equipment used in astronavigation. The fuel tank comprises an inner layer tank and an outer layer tank, wherein the inner layer tank is made from anti-corrosion materials, the outer layer tank is made from high strength materials, and the inner layer tank is uniformly adhered on the inner wall of the outer layer tank. According to the invention, the inner structure is made from anti-corrosion materials, and the outer structure is made from high strength materials; the inner structure has high corrosion resistance but bears small load, the outer structure is used for bearing most loads and is separated from fuels, thus the outer structure can not be corroded, and the influence caused by fuel corrosion and damage can be effectively reduced, thus the service life of the fuel tank is prolonged.

Description

technical field [0001] The invention relates to a fuel storage tank with a corrosion-resistant double-layer structure, which belongs to the field of space navigation and aircraft or equipment used therein. Background technique [0002] The storage tank is a device used to store fuel and oxidant and provide pressurized oxidant and fuel to the engine. Because the fuel stored in the fuel tank is corrosive to a certain extent, and in actual use, there is a certain stress in the working environment of the system and components. Corrosion resistance (corrosion stability) and strength of materials are therefore important parameters for determining the working life of systems and components. Due to the corrosion effect of the storage liquid stored in it, the general structure of the storage tank generally has a short service life. If the storage tanks are all made of corrosion-resistant materials, the strength of the storage tanks will be reduced. If a material having higher stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C3/12F17C13/00
Inventor 薛彩军梁珩韩钰张俊苗
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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