Improvements relating to hose

A technology for hoses and hose parts, which is applied in the field of manufacturing super-long hoses and can solve problems such as failure

Inactive Publication Date: 2009-09-02
BHP PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon steel mandrels are problematic since the metal internal elements of the hose are often made of stainless steel
When making this hose with a carbon steel mandrel, a portion of the carbon steel is transferred to the surface of the stainless steel internal components, which presents a site for corrosion of the internal components, resulting in rapid failure in extreme environments

Method used

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  • Improvements relating to hose
  • Improvements relating to hose
  • Improvements relating to hose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0087] exist figure 1 In general, 210 denotes a corrugated hose according to the invention.

[0088] The hose 210 includes an inner tubular corrugated layer 212 and an outer tubular corrugated layer 214 each comprised of a plurality of corrugated portions 212a and 214a arranged end to end and secured to each other. Layers 212 and 214 each have sinusoidal (or U-shaped or Ω-shaped) corrugations. An insulating layer 216 is disposed between the bellows 212 and 214 . In addition, the space between the bellows 212 and 214 is placed in a vacuum to further improve the insulation. An armor layer 218 is provided around the outer bellows 214 to further improve insulation. A pumping port 220 is provided for evacuating air from between the layers 212 and 214 to create a vacuum. Hose 210 also includes end fittings 222 at each end of the corrugated hose (at figure 1 Only one end fitting 222 is shown in .

[0089] Figure 3A-3D Three applications for the hose 10 are represented. exist...

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Abstract

The invention relates to bellows hose, which is capable of being used without leakage, and which has a longer length and/or diameter than has been previously achievable. A bellows hose (210) comprises an inner tubular bellows (212) and an outer tubular bellows (214). An insulation layer (216) is provided between the bellows (212 and 214). An armoured layer (218) is provided around the outer bellows (214), to improve the insulation further. The hose can have length above 30m and a diameter above 400mm. A method of, and apparatus for, making the hose are also described, which involves the use of a non-metallic mandrel.

Description

technical field [0001] The present invention relates to hoses, and more particularly to extra-long hoses and methods and apparatus for making extra-long hoses. In particular, the invention relates to hoses that can be used at low temperatures. Background technique [0002] Common applications for hoses include pumping fluids under pressure from fluid reservoirs. Examples include the supply of domestic heating oil or LPG to boilers; the transfer of produced oilfield liquids and / or gases from fixed or floating oil production platforms to ship cargo tanks or from ship cargo tanks to shore-based storage units; especially in the fueling process of Formula 1 to deliver fuel to racing cars; and to deliver corrosive fluids such as sulfuric acid. [0003] It is well known to use hoses to convey fluids such as liquefied gas at low temperatures. Such hoses are commonly used to transport liquefied gases such as liquefied natural gas (LNG) and liquefied propane gas (LPG). [0004] Ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/15F16L11/20B29D23/18
Inventor J·A·维茨D·考克斯G·A·霍尔R·史密斯
Owner BHP PETROLEUM
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