Metal hose suitable for sedimentation geology gas pipeline and preparing method of metal hose

Abstract

The invention discloses a metal hose suitable for a sedimentation geology gas pipeline and a preparing method of the metal hose. The metal hose comprises a net part and connecting connectors at the two ends of the net part. A net comprises a metal corrugated pipe, a connecting pipe, a ring and a steel wire gauze sleeve. The metal corrugated pipe is prepared by following components including, by weight, 18-38 parts of iron, 13-28 parts of manganese, 11-23 parts of chromium, 8-15 parts of copper, 7-16 parts of zirconium, 3-7 parts of graphene, 2-5 parts of silicon carbide and 1-3 parts of calcium sulfate. Firstly, the metal hose can effectively resist soil texture deformation caused by geological sedimentation; and secondly, the metal hose can overcome installing stress and deformation generated by the metal hose.

Description

technical field [0001] The invention belongs to the field of metal materials and relates to a metal pipeline, in particular to a metal hose suitable for subsidence geological gas pipelines and a preparation method thereof. Background technique [0002] Stepping into the 21st century, with the vigorous development of China's gas industry, gas pipelines in Sanshui District quickly lead to thousands of households. However, the foundation settlement of civil buildings in this area is very common, causing additional stress on courtyard pipes, building pipes and gas facilities. Increase, it is easy to cause gas leakage accidents due to uneven settlement near the outlet pipe. Since Sanshui is located at the confluence of the three rivers, it is an important part of the alluvial plain of the Pearl River Delta. Its geological structure is complex and changeable, and the subsidence in some areas has obvious characteristics of large amplitude and long period. Conventional measures to d...

AI Technical Summary

Problems solved by technology

For the sinking of gas pipeline facilities, relevant scholars in the industry have proposed some treatment measures, mainly in the following categories: (1) soft soil foundation treatment; select specific treatment methods according to the actual project, such as material replacement method, drainage consolidation method, replacement Cushion filling method, chemical reinforcement method, deep compaction method, pile foundation caisson, lateral restraint method, back pressure berm method, etc. These methods involve a wide range of areas, are costly and difficult to operate, and are basically not adopted by gas companies

(2) Remove the fixed code of the outlet pipe or use a sleeve-type fixed bracket. When the outlet pipe passes through the concrete floor, set the outlet sleeve to prevent the concrete from consolidating with the pipeline and hindering the displacement of the pipeline; but this method is only to transfer stress Centralized location is not a permanent solution

(3) The horizontal pipeline near the building is installed in a step-by-step manner; this method is conducive to improving the flexibility of the pipeline and absorbing the settlement displacement of the foundation, but the compensation amount is limited, and it is only suitable for occasions where the settlement is not large

(4) Replace steel pipe with better PE pipe; PE pipe has incomparable advantages in bending performance, but the steel-plastic conversion joint has become a new weak link, and the ability of PE pipe to resist external damage is greatly reduced

However, the use of traditional metal hoses has the following shortcomings, which are mainly reflected in the following three aspects: (1) The pre-compression amount is the amount that can be settled. When the pre-compression amount is large, it is easy to damage the stainless steel metal hose. When the pre-compression amount is small, the settlement margin is insufficient.