Constant-temperature bus duct

The utility model discloses a constant-temperature bus duct which comprises a bus duct shell, a bus assembly, a cooling system, a temperature sensor and a control device. The bus duct shell is provided with an accommodating channel and a cooling channel located around the accommodating channel, and the cooling channel and the accommodating channel are arranged at an interval; the bus assembly penetrates through the accommodating channel, and the outer surface of the bus assembly is in contact with the inner wall of the accommodating channel; a coolant outlet of the cooling system is communicated with one end of the cooling channel, and a coolant recovery port of the cooling system is communicated with the other end of the cooling channel; the temperature sensor is arranged in the bus duct shell; the control device is electrically connected with the cooling system and the temperature sensor and can control the cooling system to work according to information fed back by the temperature sensor; wherein the outer