An electric heat tracing and thermal insulation device for subway pipeline equipment in cold areas

Abstract

The invention discloses an electric tracing heat preservation device for a cold region underground pipeline device. The electric tracing heat preservation device comprises electric tracing heating cables, a heat preservation protective layer and a temperature monitoring system. The electric tracing heating cables are laid along a pipeline, the heat preservation protective layer is arranged on the outer side of the pipeline, the temperature monitoring system is connected with the electric tracing heating cables, and temperature sensors of the temperature monitoring system are tightly attached to the outer wall of the pipeline. The heat preservation protective layer is composed of a composite silicate heat insulating layer, a glass cloth composite aluminum foil damp-proof layer and an aluminum alloy sheet protective layer. The temperature monitoring system comprises the temperature sensors and a comprehensive control device. The temperature sensors are connected with the comprehensive control device through connection terminals. Thermistors serve as the temperature sensors and are tightly attached to the outer wall of the pipeline, and each electric tracing heating cable is matched with two temperature sensors. The temperature monitoring system achieves remote monitoring, any failure of the electric tracing heat preservation device is found in time, and safety running of the cold region underground pipeline device is ensured.

Description

technical field [0001] The invention relates to a thermal insulation device for pipeline equipment, in particular to an electric heat tracing thermal insulation device for subway pipeline equipment. Background technique [0002] With the congestion of urban traffic, convenient, punctual, and large-capacity urban rail transit is favored. As the pioneer of urban rapid rail transit, subways are being built in full swing in many cities. The subways that have been opened and operated one after another are closely related to people's travel. The safe operation of subways and the maintenance of related equipment have received further attention. [0003] The subway pipeline equipment in the cold northern region has suffered from different degrees of freezing damage, which has brought hidden dangers to the safe operation of the subway. [0004] If the water supply and drainage pipeline equipment of the subway is damaged by freezing, it will directly affect the activities and work of...

AI Technical Summary

Problems solved by technology

[0007] In the existing electric heat tracing insulation measures for subway pipelines, the insulation protection layer used is easy to fall off, and the insulation material is easily corroded and damaged in a humid environment, and it cannot meet the fire prevention standards required by relevant subway regulations; moreover, there is still insufficient remote monitoring capability And other shortcomings, water intrusion, cable short circuit, etc. cannot be found in time, and even the pipeline equipment and thermal insulation protection layer may freeze, making it difficult to achieve the antifreeze insulation effect of pipeline equipment

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