Novel reaction kettle cooling device

The utility model discloses a novel reaction kettle cooling device which comprises a reaction kettle body, an approximately cylindrical heat transfer layer is arranged on the outer surface of the reaction kettle body, a spiral cooling water pipe is arranged in the middle of the heat transfer layer, a cold steam layer shell wraps the outer surface of the heat transfer layer, and a space serving as a cold air layer is formed between the cold steam layer shell and the heat transfer layer. The surface of a shell of the cold steam layer is coated with a heat preservation and insulation layer, the cooling water pipe is provided with a circulating cooling water inlet pipe and a circulating cooling water outlet pipe which are communicated with the outside, the cooling layer is provided with a circulating cold air inlet pipe and a circulating cold air outlet pipe which are communicated with the outside, and a temperature measuring instrument is arranged in the reaction kettle. And a plurality of tightening rings for f