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Pipe fixing method suitable for permafrost regions

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 instability, frost heaving, solar power supply, and thawing, and achieve easy assembly, The effect of various functions and high degree of integration

Active Publication Date: 2021-08-10
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the heat exchange between pipelines with internal heat sources (such as crude oil pipelines) and permafrost in the prior art, causing thawing, and pipelines with low-temperature materials (such as natural gas pipelines) and permafrost. Frost heave and unstable solar power supply problems, and provide a pipeline fixing installation system based on energy recovery and a pipeline fixing method for the installation system

Method used

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  • Pipe fixing method suitable for permafrost regions
  • Pipe fixing method suitable for permafrost regions
  • Pipe fixing method suitable for permafrost regions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A pipeline fixed installation system based on energy recovery, the pipeline is fixed on the heat insulation installation plate through the heat insulation fixing component, the heat insulation installation plate is fixed above the permafrost layer through the antifreeze pulling support legs, the heat insulation The fixing assembly includes two positioning installation parts up and down, and the two positioning installation parts are butted to form a circular channel for the pipeline 14 to pass through;

[0043] Each positioning installation part includes a shell plate 25 that forms a sealed chamber inside, and an energy recovery component is provided on the fixed mounting part, and the energy recovery component includes a fixed part at the bottom of the shell plate 25 and can be closely attached to the The semiconductor power generation sheet 27 on the outer wall of the pipeline 14, the top of the semiconductor power generation sheet 27 is connected with the cold plate 2...

Embodiment 2

[0053] Preferably, the heat insulating mounting board includes two layers of mounting boards 19 and a heat insulating board 21 sandwiched between the two layers of mounting boards 19 . The thermal insulation mounting plate can prevent the heat of the crude oil pipeline from being transferred into the permafrost, resulting in degradation of the permafrost in contact with the crude oil pipeline.

[0054] Preferably, the installation board 19 is a metal board, and the heat insulation board 21 is a rigid polyethylene fiber board. Guarantee the strength and heat insulation performance of the heat insulation mounting plate.

[0055] As preferably, a connection plate 26 is fixed on the position where the two fixed installation parts are connected. After the two fixed installation parts are butted, they are fixedly connected by the connection plate. After 26 are fastened together, it can ensure that the shell plate 25 and the pipe 14 fit closely.

[0056] Preferably, a mounting base...

Embodiment 3

[0062] Preferably, the support leg body 5 and the expansion inner core are included, wherein a hollow channel is formed inside the support leg body 5, and at least one side wall through hole is provided on the side wall of the support leg body 5, and each side wall A frozen nail 4 is assembled in the through hole; the expansion inner core includes a fixed transparent cover 3 detachably assembled on the top of the supporting leg body 5, and an embedded insulating wire sleeve fixed in the central opening of the fixed transparent cover 3 8. The frozen nail pusher 6 fixed on the bottom of the insulating wire sleeve 8 and located in the hollow channel, and the frozen nail pusher 7 cooperating with the frozen nail pusher 6; the frozen nail pusher 7 includes a push rod part 7-1 that is partly inserted in the frozen nail push sleeve 6 and a tapered part 7-2 fixed at the bottom end of the push rod part 7-1. The push rod part 7-1 The outer diameter of the outer diameter is smaller than ...

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Abstract

The invention discloses a pipeline fixing method suitable for permafrost regions. The pipeline is fixed on a heat insulation installation plate through a heat insulation fixing component, and the heat insulation installation plate is fixed above the permafrost layer through an antifreeze pulling support leg , the heat insulation fixing assembly includes two positioning installation parts up and down, the two positioning installation parts are butted to form a circular passage for the crude oil pipeline to pass through, and each positioning installation part includes a shell plate forming a sealed chamber inside; the fixing The installation part is provided with an energy recovery assembly, the energy recovery assembly includes a semiconductor power generation sheet fixed on the bottom of the shell plate and can be closely attached to the outer wall of the pipeline, and the top of the semiconductor power generation sheet is fixed on the heat conduction rod. The cold plate on the top of the shell plate is connected, and the semiconductor power generation sheet is electrically connected with the battery in the data acquisition protection box. The invention is environment-friendly and has high fixing stability.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/11F16L1/026
Inventor 李国玉曹亚鹏周志伟陈敦冯刚吴刚
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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