Online plugging device for high-temperature heat transfer oil delivery pipe and construction method thereof

Abstract

The invention discloses an online plugging device for a high-temperature heat transfer oil delivery pipe and a construction method thereof. The online plugging device comprises a first hoop and a second hoop. The first hoop and the second hoop are separately provided with semi-annular fixed bodies and pressing parts separately extending at two ends of the fixed bodies. Corresponding installation holes arte formed in the pressing parts, and the first hoop and the second hoop are connected through fasteners installed in the installation holes, so that the first hoop and the second hoop are locked together to form a ring shape and are fixed to a pipeline. The online plugging device further comprises a plug bolt and a high-temperature resistant sealing ring, wherein the fixed body of the firsthoop is provided with an operating part, a closed-loop concave groove is formed in the outer side edge of the operating part, and the high-temperature resistant sealing ring is accommodated in the closed-loop concave groove and protrudes out of the closed-loop concave groove. The online plugging device for a high-temperature heat transfer oil delivery pipe can effectively perform online plugging,and has particularly obvious effect on the high-temperature liquid pipeline.

Description

Technical field: [0001] The invention relates to the field of polyester, in particular to an online plugging device for high-temperature heat-conducting oil delivery pipes and a construction method thereof. Background technique: [0002] Usually, the process temperature of polyester fiber production is generally controlled at 200-300 degrees. The way to maintain the temperature is to rely on the heat medium pump to transport high-temperature heat-conducting oil to trace the heat. The general process is to heat the heat-conducting oil to 300-330 degrees through the boiler. The heat transfer oil is transported to the polymerization and spinning workshop through pipelines through heat medium pumps to heat the polyester melt. The high temperature heat transfer oil is transported and circulated in the closed pipeline by heat medium pumps, and generates 0.2-0.6MPa pressure. In the actual production process, under the condition of high temperature and high pressure, the conveying ...

AI Technical Summary

Problems solved by technology

In the actual production process, under the condition of high temperature and high pressure, the conveying pipeline will occasionally produce tiny cracks and cause slight leakage of heat transfer oil. If the leakage is repaired, it needs to be welded after the production is stopped. If the leak is not repaired, it will easily cause safety hazards, not to mention polyester fiber production. The industry generally operates continuously 24 hours a day, and once production is stopped, the loss will be huge

However, the existing on-line plugging device applied to high-temperature pipelines has poor effect and cannot achieve the purpose of effective plugging, such as the pipeline plugging device disclosed in CN1048796078A and the disclosed pipeline plugging device in CN207455048U. Leakage device, all the same, can not be applied to the plugging of high temperature liquid

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