| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent wear of an ash transport tube or a packing interposed therebetween to be easily centered at a connector. SOLUTION: In the ash transport connector structure, ash transport tubes 52, 53 for connecting a lower portion of a cyclone of the pressurized fluidized- bed boiler to an ash cooler are each formed of a double tube structure made of an outer peripheral pressure resistant material 54 and an inner peripheral wear resistant material 55, and a connector of the tubes 52 to 53 is constituted by flanges 56, 57 formed at an end of the material 54, a packing 58 sandwiched between the flanges 56 and 57 and having an inner diameter equal to that of the material 55, and a clamp 59 for holding fixedly the flanges 56, 57. In this case, an engaging recess 64 for engaging the packing 58 in a centered state is formed on an opposed surface of the tube 52 to the flange 56, and an engaging recess 66 for engaging the packing 58 in a centered state and a flange engaging protrusion 67 continued in a circumferential direction for enclosing an outer periphery of the flange 56 are formed on an opposed surface of the tube 53 to the flange 57.</p> |
