Pipeline fixing method suitable for frozen soil area

A technology for fixing pipelines and permafrost areas, applied in soil protection, pipeline laying and maintenance, pipes/pipe joints/fittings, etc., can solve problems such as frost heaving solar power supply, thawing, instability, etc., to achieve multiple functions, Easy assembly and high degree of integration
CN112663594AActive Publication Date: 2021-04-16NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
Publication Date
2021-04-16

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Abstract

The invention discloses a pipeline fixing method suitable for a frozen soil area. A pipeline is fixed to a heat insulation mounting plate through a heat insulation fixing assembly, the heat insulation mounting plate is fixed above a perennial frozen soil layer through anti-freezing supporting legs, the heat insulation fixing assembly comprises an upper positioning mounting part and a lower positioning mounting part, the two positioning mounting parts are in butt joint to form a circular channel allowing a crude oil pipeline to penetrate through, and each positioning mounting part comprises a shell plate with a sealed cavity formed inside; and an energy recovery assembly is arranged on the fixing mounting parts, the energy recovery assembly comprises a semiconductor power generation piece which is fixed to the bottom of the shell plate and can be tightly attached to the outer wall of the pipeline, the top of the semiconductor power generation piece is connected with a cold plate fixed to the top of the shell plate through a heat conduction rod, and the semiconductor power generation piece is electrically connected with a battery in a data acquisition protection box. The pipeline fixing method is green, environment-friendly and high in fixing stability.
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Description

technical field

[0001] The invention relates to the field of frozen soil technology, in particular to a pipeline fixing method suitable for frozen soil regions. Background technique

[0002] Permafrost refers to soil or rocks that have a temperature of 0°C or below, contain ice, and have been frozen for more than two years. Its area accounts for about 1 / 4 of the land area of ​​the northern hemisphere. There are abundant oil and gas resources in these vast areas. With the further exploitation and utilization of global oil and gas resources, there are more and more oil and gas pipeline projects in permafrost regions. However, buried pipeline projects are affected by multiple influences of oil temperature and external environment, and pipeline projects built in permafrost regions will face various permafrost disasters. When high-temperature crude oil pipelines are buried in permafrost areas, the permafrost at the lower part of the pipelines will melt, and uneven thawing will ...

Claims

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