The utility model provides a thermal insulation device for a compressed natural gas input pipeline, which is characterized in that the device is arranged on the outer wall of the pipeline. The device comprises a heating layer, a thermal insulation layer, a moisture-proof layer, and a power wiring terminal. The heating layer is coated on the outer wall of the pipe. The thermal insulation layer is coated on the outer surface of the heating layer. The moisture-proof layer is coated on the outer surface of the thermal insulation layer. The power wiring terminal is arranged at one end of the heating layer. The thermal insulation device of the utility model is covered with a heating layer and a thermal.

Insulation layer outside the transmission pipeline. The heating layer heats the transmission pipeline to reach the specified temperature and the thermal insulation layer plays a thermal insulation role so that the gas or liquid transported in the pipeline can maintain the temperature required for work and meet the working conditions of
subsequent processes. The heating layer comprises a plurality of heating lines. The heating line has low cost and low working power. Compared with the heating device arranged on the voltage regulating equipment in the prior art, it saves a lot of electric energy and reduces the cost.

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