Title:
PRE-TENSION SEABED VACUUM PIPELINE STRUCTURE AND STRETCHING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/156092
Kind Code:
A1
Abstract:
Disclosed in the present invention are a pre-tension seabed vacuum pipeline structure and a stretching method therefor, for use in improving the rigidity of a seabed vacuum pipeline, minimizing drooping of the middle of a suspended span pipeline, and ensuring the driving stability and safety. The structure comprises a seabed vacuum pipeline and a plurality of piers; the seabed vacuum pipeline is fixedly supported on the tops of the piers; the piers have elastic strength; the seabed vacuum pipeline comprises a plurality of vacuum pipeline sections which are sequentially arranged; the vacuum pipeline sections have tensile strength; flanges are arranged at the opposite ends of every two adjacent vacuum pipeline sections; gaps are formed between the flanges of every two adjacent vacuum pipeline sections at intervals; and the flanges of every two adjacent vacuum pipeline sections are connected by means of a tensioning mechanism. The stretching method comprises performing local grouping on the plurality of vacuum pipeline sections and then stretching same by using a sequencing stretching method, stretching each vacuum pipeline section step by step by using a step-by-step stretching method, and stretching and closing the gaps between the flanges of every two adjacent vacuum pipeline sections step by step.
Inventors:
ZHANG YAOPING (CN)
Application Number:
PCT/CN2021/092528
Publication Date:
July 28, 2022
Filing Date:
May 09, 2021
Export Citation:
Assignee:
UNIV XIJING (CN)
International Classes:
E02D29/063
Domestic Patent References:
| WO2001040695A1 | 2001-06-07 |
Foreign References:
| CN109334682A | 2019-02-15 | |||
| CN112113032A | 2020-12-22 | |||
| CN110758410A | 2020-02-07 | |||
| CN210716298U | 2020-06-09 | |||
| EP3450632A1 | 2019-03-06 |
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