Heating and heat-insulating type oil conveying pipeline assembly

Abstract

The invention discloses a heating and heat-insulating type petroleum conveying pipeline assembly which comprises a flange disc and a petroleum conveying pipeline. The petroleum conveying pipeline andthe flange disc are fixedly connected in a sealed mode. The petroleum conveying pipeline is provided with a pipeline outer layer, a pipeline middle layer and a pipeline inner layer. A vacuum cavity isformed between the pipeline outer layer and the pipeline middle layer. A heating cavity is formed between the pipeline middle layer and the pipeline inner layer. A heating pipe is arranged in the heating cavity, and a water injection opening leading to the heating cavity is formed in the outer wall of the pipeline outer layer. The water injection opening is connected with the pipeline outer layerand the pipeline middle layer in a sealed mode. According to the petroleum conveying pipeline assembly, the vacuum cavity is formed between the pipeline outer layer and the pipeline middle layer, a vacuum can effectively prevent temperature spreading, thus, the low temperature cannot be transmitted to the pipeline middle layer, it is ensured that petroleum in the pipeline cannot be frozen, and the anti-freezing effect is achieved on the petroleum; and meanwhile, the heating cavity is formed between the pipeline middle layer and the pipeline inner layer, and it is ensured that the petroleum smoothly flow in the petroleum conveying pipeline.

Description

technical field [0001] The invention relates to the technical field of petroleum machinery, in particular to a heating and heat preservation type oil pipeline assembly. Background technique [0002] Petroleum is a fluid mineral deeply buried in the ground. During the process of oil extraction, oil and gas flow from the reservoir to the bottom of the well, and then rise from the bottom of the well to the wellhead. The role of petroleum in the national economy Petroleum is an important energy source. Compared with coal, it has the advantages of high energy density, convenient transportation and storage, and less pollution to the atmosphere after combustion. In the composition of the world's energy consumption, oil has surpassed coal and ranked first. [0003] In the process of oil extraction, pipeline transportation is required. Oil is transported through pipelines. When the temperature is low, the viscosity of oil is high, which brings difficulties to transportation. It is n...

AI Technical Summary

Problems solved by technology

After the pipeline is scaled, the pipeline will shrink and the flow area will become smaller, resulting in pressure loss, reduced displacement and pipeline blockage. At the same time, in a low temperature environment, the viscosity of oil will increase, and the fluidity will deteriorate, which will easily cause blockage

Most of the existing oil extraction equipment can achieve the antifreeze effect, but the antifreeze measures adopted are complicated and the antifreeze effect is poor

In order to solve these problems, an oil production pipeline that can prevent freezing and blockage is designed to solve the problems of excessive oil viscosity and poor flow

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