Natural gas transportation pipe high in safety performance

Abstract

The invention discloses a natural gas transportation pipe high in safety performance. The natural gas transportation pipe comprises a pipe body. The pipe body is internally provided with a filter screen barrel, wherein the filter screen barrel is coaxial with the pipe body. The end of the filter screen barrel is connected with the end of the pipe body through multiple connecting plates. The two side faces of each connecting plate are each provided with an arc-shaped groove. A thermally-insulating layer is arranged outside the pipe body in a sleeving manner and sequentially provided with multiple annular grooves in the axis direction of the pipe body. Saw-tooth-shaped annular rubber sleeves are arranged in the annular grooves. Cavities are formed in the thermally-insulating layer and internally provided with heating pipes. By means of the transportation pipe, the good thermal insulation effect is achieved; meanwhile, the periphery of the transportation pipe can be uniformly heated, andthus it is guaranteed that the temperature inside the transportation pipe cannot affect normal transportation of liquefied natural gas; meanwhile, impurities in the liquefied natural gas can be filtered out in the transportation process of the liquefied natural gas, and production efficiency is improved; and by means of a special structure of the end of the transportation pipe, rapid and stable splicing and mounting of the pipes can be achieved conveniently.

Description

technical field [0001] The invention relates to a transportation pipeline, in particular to a natural gas transportation pipeline with high safety performance. Background technique [0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oil field gas, gas field gas, mud volcano gas, coal bed methane, and biologically generated gas, etc.). The definition of "natural gas" that people have used for a long time is a narrow definition from the perspective of energy, which refers to the mixture of hydrocarbon and non-hydrocarbon gases naturally stored in the formation. In petroleum geology, it usually refers to oil field gas and gas field gas. Its composition is dominated by hydrocarbons and contains non-hydrocarbon gases. Natural gas is stored in underground porous rock formations, including oil field gas, gas field gas, coal bed methane, mud volcano g...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that liquefied natural gas has a certain viscosity, and the insulation performance of existing natural gas transportation pipelines is poor, and it is easy to affect the normal transportation of natural gas when the external environment temperature is very low, such as winter, and there are many impurities in liquefied natural gas , these impurities cannot be effectively removed during pipeline transportation, and it is necessary to carry out separate impurity removal treatment after transportation, which affects production efficiency. Uniform heating is carried out around the pipeline, so as to ensure that the temperature in the transportation pipeline will not affect the normal transportation of liquefied natural gas, and at the same time, the impurities in it can be filtered during the transportation of liquefied natural gas to improve production efficiency; the special structure at the end of the transportation pipe It is also conducive to the rapid and stable splicing and installation of pipelines

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