Intelligent temperature control electric heat tracing band

Abstract

The invention discloses an intelligent temperature control electric heat tracing band. The electric heat tracing band comprises a heat tracing cable and a heat tracing cable control box. The heat tracing cable is formed by combination of a conductive plastic and two parallel power supply buses which are arranged at intervals. The conductive plastic and the two power supply buses are electrically connected. An insulating shell wraps the conductive plastic and the power supply buses. The heat tracing cable control box is provided with a thermal relay and a contactor which are connected in series. The heat tracing cable control box is connected to one end of the conductive plastic and is connected in series with the conductive plastic so as to form a heat tracing cable work loop, wherein the end of the conductive plastic is electrically connected to the power supply buses. The conductive plastic contains conductive carbon grains. In the invention, a heat tracing problem of an excitation bus can be effectively solved, an insulation state is good, equipment reliability during a set starting process is increased and simultaneously manual cost is reduced.

Description

technical field [0001] The invention relates to a moisture-proof heating device, in particular to an intelligent temperature-controlled electric heating cable for preventing the excitation bus of a generator from being affected by moisture. Background technique [0002] Due to the high air humidity in coastal areas, the excitation busbar of the generator is prone to damp as a whole when the heating system is not used. When the generator is restarted after shutdown for maintenance, the insulation of the excitation busbar may not meet the requirements of the regulations, resulting in failure to start normally. The traditional way to prevent moisture is to place an iodine tungsten lamp somewhere in the excitation busbar or other heating methods that cannot achieve temperature control. For temporary installation, temporary installation or dismantling must be arranged every time. The workload is heavy, which often affects the start-up of the unit. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0002] Due to the high air humidity in coastal areas, the excitation bus of the generator is easy to be damp as a whole when the heating system is not used. When the generator is restarted after shutdown for maintenance, the insulation of the excitation bus may not meet the requirements of the regulations, resulting in failure to start normally.

The traditional way to prevent moisture is to place an iodine tungsten lamp somewhere in the excitation busbar or other heating methods that cannot achieve temperature control. For temporary installation, temporary installation or removal must be arranged every time, the workload is heavy, and it often affects the start-up of the unit

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