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Sleeve compensators can withstand high temperatures, offer a large range of displacement compensation capabilities, and have a long service life. They are particularly suitable for displacement compensation in the air supply systems of ironmaking blast furnaces in steel mills as well as in other applications involving the transportation of high-temperature media, offering significant improvements over existing compensators. The high-temperature compensator is formed by welding a flange, connectors, and a bellows as its main structure. It contains an inner lining tube, and in the middle section of this inner lining tube there is a telescopic ring composed of a guide cylinder, ring plates for the guide cylinder, sleeves, and ring plates for the sleeves. The guide cylinder and sleeves are made of oxidation-resistant and heat-resistant steel; the gap between these components where they overlap is 5–20 mm. The cavity on the outside of the inner lining tube as well as the interior of the telescopic ring are filled with high-temperature insulating material, while the inside of the inner lining tube is coated with high-temperature refractory mortar. It is characterized in that the sleeve compensator also contains two lining sleeves with displacement gaps, and these two lining sleeves are fixed to the left and right flanges via their outer edges respectively ； The first sealing cylinder seals the displacement gap of the inner liner cylinder, with one of its ends fixed to one side of the inner liner cylinder ； There is a set of L-shaped plates on the second sealing cylinder; the second sealing cylinder is fixed to one of the inner cylinders via these L-shaped plates, and there is an insulating seal layer between the second sealing cylinder and the first sealing cylinder ； Welding claws are fixed on the inner wall of the expansion joint, and the insulation layer with displacement seams is secured to the side wall of the inner cavity of the sleeve compensator through these welding claws. This arrangement not only enables it to absorb the three-dimensional displacements caused by the thermal expansion of the equipment used in the dry quenching process, thereby preventing the generation of internal stresses, but also helps to **increase the service life of the hot air equipment used in this process.