Ultrahigh-temperature prefabricated direct burial heat preservation pipe fitting spanning tee joint and heat preservation method

Abstract

The invention discloses an ultrahigh-temperature prefabricated direct burial heat preservation pipe fitting spanning tee joint and a heat preservation method. According to the current original heat preservation technology, the technology adopting polyurethane, rock wool, silicate and other heat preservation materials is adopted for conducting heat preservation on ultrahigh-temperature pipelines, although the above structure can play a certain heat preservation role, the heat conduction coefficient is high, the energy dissipation rate is high and the service life of a heat preservation layer is short. The ultrahigh-temperature prefabricated direct burial heat preservation pipe fitting spanning tee joint comprises a steel pipe A (1), a steel pipe B (2), a rock wool heat preservation layer (3), an aerogel heat preservation layer (4) and a polyurethane heat preservation layer (5). The outer wall of the steel pipe A and the outer wall of the steel pipe B are annularly wrapped by rock wool in a closed manner, and a rock wool wrapping layer is formed. The outer side of the rock wool wrapping layer is annularly wrapped by aerogel felt in a closed manner, and the aerogel heat preservation layer is formed. The outer side of the aerogel heat preservation layer is evenly wrapped by a heat reflection layer. The ultrahigh-temperature prefabricated direct burial heat preservation pipe fitting spanning tee joint and the heat preservation method are applied to 2,000 DEG C ultrahigh-temperature prefabricated heat isolation and heat preservation pipelines used in the fields of heat supply, cold supply, petroleum and petrochemicals and ships.

Description

[0001] Technical field: [0002] The invention relates to an ultra-high temperature prefabricated direct-buried thermal insulation pipe spanning tee and a thermal insulation method, which solves the problems of less thermal insulation technology, poor thermal insulation effect, high thermal conductivity, high energy loss, short life of the thermal insulation layer, and unsafe high temperature for 2000 °C pipelines. question. [0003] Background technique: [0004] At present, the original heat preservation technology adopts polyurethane, rock wool, silicate and other insulation materials to insulate ultra-high temperature pipelines. Although the above structure can play a certain role in heat preservation, it has high thermal conductivity and high energy loss rate, and Insulation has a short lifespan. [0005] Invention content: [0006] The purpose of the present invention is to provide an ultra-high temperature prefabricated directly buried thermal insulation pipe spanning ...

AI Technical Summary

Problems solved by technology

[0004] At present, the original heat preservation technology adopts polyurethane, rock wool, silicate and other insulation materials to insulate ultra-high temperature pipelines. Although the above structure can play a certain role in heat preservation, it has high thermal conductivity and high energy loss rate, and Insulation short life

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