| 摘要 |
The tubes (1) on the second tube base (2) on the hot inlet side of the heat exchanger are made from heat resistant metal. The casing mantle (6) is made from a material which is not heat resistant at the temperature at which the hot medium enters the heat exchanger. Sufficient cooling space is left between the second tube base and the inside of the casing mantle to ensure that the latter is sufficiently heat resistant to be unaffected by the temperature of the tube base. The heat exchanger has a casing which is open at both ends and contains a number of spaced apart tubes for carrying a hot first medium, which are sealed tight at both ends by tube bases that close the ends of the casing. A first tube base (3) is tightly fixed to the casing and the second tube base can be moved along the inside of the casing in the axial direction of the latter. A cool second medium is passed through the space around the tubes. |
