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Low-temperature pipeline with inner-outer spring framework structure

A skeleton structure and inner skeleton technology, applied in the direction of pipeline protection, protection of pipelines by thermal insulation, and prevention of damage/wear of pipelines, etc., can solve the problems of troublesome production, complex structure, poor low temperature sealing effect, etc., to achieve good resistance to torsional deformation, Wide range of applications, the effect of improving tensile strength

Pending Publication Date: 2021-02-19
WEIHAI HONGTONG PIPING MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Most of the current low-temperature tubes are metal bellows, which have poor low-temperature sealing effect, and some have better sealing effect, but the structure is complex and troublesome to manufacture

Method used

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  • Low-temperature pipeline with inner-outer spring framework structure

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific embodiments, so as to help understand the content of the present invention. The methods used in the present invention are conventional methods unless otherwise specified; the raw materials and devices used are conventional commercially available products unless otherwise specified.

[0023] Such as figure 1 As shown: the present invention provides a low-temperature pipeline with an inner and outer spring frame structure, which includes an inner frame layer 1 coaxially arranged from inside to outside, a wear-resistant layer 2, a sealing film layer 3, an insulation layer 4, a circumferential reinforcement layer 5, a longitudinal The reinforcement layer 6 and the outer skeleton layer 7, the wear-resistant layer 2 is coated on the outer peripheral surface of the inner skeleton layer 1, the sealing film layer 3 is coated on the outer peripheral surface of the wear-resistant layer 2, and the in...

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Abstract

The invention relates to a low-temperature pipeline with an inner-outer spring framework structure. The low-temperature pipeline comprises an inner framework layer, a wear-resistant layer, a sealing film layer, a heat preservation layer, a circumferential reinforcing layer, a longitudinal reinforcing layer and an outer framework layer which are coaxially arranged from inside to outside and are sequentially wound layer by layer. All layers of the low-temperature pipeline with the inner and outer spring framework structure belong to non-bonding structures, an outer framework layer spiral line and an inner framework layer spiral line are staggered by a half screw pitch to be wound, and the inner framework layer has spiral outward tension, the outer framework layer has spiral inward tension, the inner and outer interact to extrude the wear-resistant layer, the sealing film layer, the heat preservation layer, the circumferential reinforcing layer and the longitudinal reinforcing layer; andsliding of all layers is limited. The low-temperature pipeline is better in sealing and pressure-resisting effect, excellent in ultralow-temperature impact resistance, not prone to radial buckling andlateral buckling and capable of being widely applied to the technical field of low-temperature pipelines.

Description

technical field [0001] The invention relates to the technical field of cryogenic pipelines, in particular to a low-temperature pipeline with an inner and outer spring skeleton structure. Background technique [0002] In recent years, the liquefied natural gas (LNG) industry has developed rapidly, and FLNG (floating liquefied natural gas production unit) is a high-tech ship for marine natural gas development. Cryogenic flexible pipeline is the core supporting equipment of FLNG, which is used for exporting cryogenic liquefied natural gas. The market potential of cryogenic flexible pipelines is huge, including extended applications including land and water LNG transfer, transfer and bunkering, with a potential market of tens of billions. [0003] Most of the current low-temperature tubes are metal bellows, which have poor low-temperature sealing effects, and some have better sealing effects but have complex structures and troublesome fabrication. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F16L9/16F16L59/02F16L57/06
CPCF16L9/16F16L57/06F16L59/029
Inventor 曲东东毕婷婷王雪陈鹏李兴维王佳佳
Owner WEIHAI HONGTONG PIPING MATERIALS CO LTD
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