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All-welded ultra thin-walled storage tank and welding structure suitable for all welding

A welding structure and connecting structure technology, applied in the aerospace field, can solve problems such as no solution proposed, and achieve the effects of improving weld quality and shape and position accuracy, enhancing rigidity, and simplifying welding process

Inactive Publication Date: 2018-09-04
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For the above-mentioned problem of designing a storage tank that ensures the leak rate level reaches the limit, no effective solution has been proposed so far

Method used

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  • All-welded ultra thin-walled storage tank and welding structure suitable for all welding
  • All-welded ultra thin-walled storage tank and welding structure suitable for all welding

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Embodiment 1

[0049] (1) Structure

[0050] Such as figure 1 As shown, the storage tank provided in this embodiment includes a front bottom 1, a barrel section 2, and a rear bottom 3, which are fully welded and sealed. figure 1Considering the simplicity of the process, the storage tank shown is the butt weld of the front bottom 1 and the barrel section 2 as the sealing welding, and the bottom locking welding structure 4 is located at the butt weld of the front bottom 1 and the barrel section 2.

[0051] Different from the existing model with a bottom lock structure with a welding leak that is suitable for fusion welding, this embodiment adopts the characteristics of electron beam welding for ultra-thin wall storage tanks, and designs such as figure 2 Bottom lock welded construction shown.

[0052] The bottom lock welding structure 4 includes a lock bottom 5, a reinforcing boss 6 and an intermediate connecting structure 7; wherein, the locking bottom 5 and the reinforcing boss 6 are respe...

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Abstract

The invention discloses an all-welded ultra thin-walled storage tank and a welding structure suitable for all welding. The all-welded ultra thin-walled storage tank comprises a front bottom (1), a cylinder segment (2) and a rear bottom (3). The welding structure comprises a lock bottom (5), a reinforcing boss (6) and a middle connection structure (7). The welding structure is connected with the cylinder segment (2) through the middle connection structure (7). The front bottom (1) comprises a front bottom welding edge (9) or the rear bottom (3) comprises a rear bottom welding edge (9). The welding edge (9) and the middle connection structure (7) are connected through electron beam welding. According to the all-welded ultra thin-walled storage tank and the welding structure suitable for allwelding, the technical effects that the welding process is simplified, the welding quality is improved, the sealing level reaches the limit and the storage box wall is ultra thin are achieved, and thetechnical purpose of designing the storage box with the leak rate reaches the limit is achieved.

Description

technical field [0001] The application belongs to the field of aerospace technology, and in particular relates to an all-welded ultra-thin-wall storage tank and a welded structure suitable for all-welding. Background technique [0002] The upper stage is a new type of space shuttle, which has four fuel storage tanks, two oxidant storage tanks and two combustion agent storage tanks. After the propellant is filled in the upper stage, under certain space conditions, it is extremely difficult to ensure that the propellant concentration does not exceed the standard during the storage period, and it is extremely difficult to meet the requirements with the existing non-metallic sealing ring leakage rate. In response to this situation, it is necessary to design a storage tank that ensures that the leak rate level reaches the limit. [0003] For the above-mentioned problem of designing a storage tank that ensures that the leak rate level reaches the limit, no effective solution has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/60B64G1/40B23K15/00
CPCF02K9/605B23K15/0006B23K15/0053B64G1/402
Inventor 杨瑞生胡正根鄢东洋郑卫东常志龙王晓博李斌
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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