The utility model provides a thermal recovery tubular column, which aims to improve the safety performance of nitrogen during heat insulation, discharge assistance and steam injection. The thermal recovery pipe column comprises an outer pipe assembly. The outer pipe assembly comprises a thermal recovery packer used for being set on a casing pipe. The thermal recovery packer is provided with an annular nitrogen injection channel which is communicated from top to bottom in a one-way mode. Wherein the outer pipe assembly comprises a central channel and a valve plate which can swing upwards to open the central channel and swing downwards to block the central channel, the thermal recovery pipe column comprises a steam injection inner pipe which is arranged in the central channel in a penetrating mode and pushes the valve plate to swing downwards when moving downwards, and the outer pipe assembly further comprises a reset piece which drives the valve plate to swing upwards after the steam injection inner pipe moves upwards. If an abnormal condition occurs in the steam injection process, the central channel can be rapidly blocked by rapidly lifting the steam injection inner pipe upwards,oil and water in a stratum are prevented from entering the central channel, the spacing distance between nitrogen and steam is increased, the heat loss of the steam is reduced, the outer pipe assemblydoes not need to be lifted out, and the heat loss is avoided.