Thermal insulation device and method for hydraulic mechanism of outdoor circuit breaker of transformer substation

The invention relates to a transformer substation outdoor circuit breaker hydraulic mechanism heat preservation device and method, the transformer substation outdoor circuit breaker hydraulic mechanism heat preservation device is constructed through a heat preservation unit, a temperature control box and an external power supply, and the temperature control box compares temperature data returned by a temperature sensor with a set temperature threshold value; the temperature controller is used for controlling the heating layer of the heat tracing band so as to ensure that the temperature of the nitrogen cylinder of the circuit breaker is always in a required range, the temperature control and maintenance functions of the nitrogen cylinder of the outdoor circuit breaker of the transformer substation are realized, and the device has the characteristics of simple structure and low manufacturing cost; the problem that the hydraulic mechanism of the outdoor circuit breaker is frequently pressed in winter can be eff