Now there are underground garages in high-rise residential areas and high-rise buildings. The drainage system of the underground garage must use a drainage pump. The garage and ground floor were flooded with standing water.
                                                                                                                           
       The drainage pump relies on the high-speed rotating impeller, and the liquid obtains energy under the action of inertial centrifugal force to increase the pressure. Before the pump works, the pump body and the water inlet pipe must be filled with water to prevent cavitation. When winter comes, the medium in the pump is frozen, so special attention is paid to pipeline insulation.
                                                                                                                           
       For the antifreeze and heat preservation of the drainage pump pipeline, the self-regulating heating cable can be used for effective antifreeze and heat preservation. The purpose of the self-regulating heating cable pipe insulation is to supplement the heat loss caused by the temperature difference between the inside and outside of the pipe shell.
                                                                                                                              
       The self-regulating heating cable can self-regulate the temperature, can automatically adjust the output power according to the temperature change of the heated system, and automatically limit the heating temperature, so that the electric heating system is more stable, reliable, safe and energy-saving.