Double layer overpressure resistant cabin body of great depth underwater vehicle and molding method thereof

A technology for underwater vehicles and pressure chambers, applied to underwater ships, underwater operating equipment, coatings, etc., can solve problems such as anti-corrosion problems, achieve excellent seawater resistance, increase strength and stiffness, and good insulation performance effect

Active Publication Date: 2019-10-18
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the corrosion resistance of aluminum alloys in seawater is a major problem

Method used

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  • Double layer overpressure resistant cabin body of great depth underwater vehicle and molding method thereof
  • Double layer overpressure resistant cabin body of great depth underwater vehicle and molding method thereof
  • Double layer overpressure resistant cabin body of great depth underwater vehicle and molding method thereof

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Embodiment

[0089] Step 1. Processing the inner shell and the ring rib on the inner shell requires the first machining allowance to be left on the outer surface and inner surface of the inner shell respectively;

[0090] Preferably, the inner shell is made of a thick-walled extruded tube as a blank, and the ring rib of the inner shell is processed to a preset size by mainly using a turning machining process;

[0091] Preferably, the first machining allowance is 3mm; preferably, the inner shell is 7A05 aluminum alloy;

[0092] Step 2, processing and installing the groove of the longitudinal weld backing plate 3 on the ring rib of the inner shell, and installing the longitudinal weld backing plate 3 on the ring rib of the inner shell;

[0093] Step 3. The shell is rolled into a circle with a plate 4mm thicker than the preset wall thickness, and the longitudinal weld after the circle is formed by friction stir welding;

[0094] Preferably, the shell is made of 5A06 aluminum alloy;

[0095]...

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Abstract

The invention discloses a double layer overpressure resistant cabin body of a great depth underwater vehicle and a molding method thereof. The cabin body includes an inner shell, an outer shell, a backing plate and an insulating coating; the inner shell is in a structural form that flanges on the two ends and the middle part includes a cylinder and outer ring ribs; the flanges on the two ends canbe connected to other sections; the ring ribs of the inner shell are in equidistant distribution; the wall thickness of the inner shell close to girth weld are gradually increased, so that the increasing of the integral intensity and stiffness of the structure can be achieved, and weld positions can be ensured that the subjected stress is small when being subjected to external pressure; the outershell adopts a thin wall cylinder shell and is formed by thin-wall plates through roll welding, and the welding seam is longitudinal; and the inner shell and the outer shell of the cabin body are in connection through the abutting joint of the girth weld, and the small cavity structure on the back of the girth weld can guarantee that the structural form of butt welding can be realized easily. Thecabin body is high in underwater overpressure resistance, good in overpressure resistant stability, light in weight, high in specific strength, good in impact resistance, long in seawater corrosion resistance duration and long in service life.

Description

technical field [0001] The invention relates to the technical field of a pressure-resistant cabin of a large-depth underwater vehicle, and more particularly relates to a double-layer pressure-resistant cabin of a large-depth underwater vehicle and a forming method thereof. Background technique [0002] Cylindrical cabins, such as cylindrical cabins with equal wall thickness and cylindrical cabins with ring ribs, have been widely used in aviation, aerospace, Nautical and vehicle engineering and other fields. In the pressure-resistant cabin of underwater vehicles, the cylindrical cabin plays a major role, and it has been used in various products, such as various types of torpedoes, submarines, unmanned underwater vehicles (UUV), underwater Autonomous untethered robots (AUVs) and various underwater vehicles, etc. [0003] In addition, aluminum and aluminum alloys are currently one of the most widely used light metals. Due to their low density, high specific strength, high spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/13B63G8/00B23K10/02B23K20/12B05D3/02B05D7/14
CPCB05D3/0209B05D3/0218B05D7/14B23K10/02B23K20/122B63B3/13B63G8/00
Inventor 刘凯王武坤孙炯李晨张翔龙胡平顾雪峰
Owner NAVAL UNIV OF ENG PLA
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