| 摘要 |
A semi-modular rotor module [52] for a modified modular air preheater [10] has a two-pin lug assembly for engaging an air preheater post [16]. The two-pin lug assembly includes an upper two-pin lug [54] and a lower two-pin lug and is configured to occupy a sector sealing plate angle &bgr;. A plurality of diaphragms [56], [58], [60], [62] extend radially from the two-pin lug assembly, including two outer diaphragms [56], [62] positioned to define a sub-sector angle γ that is less than the sealing plate angle &bgr;. Stay plates [42] are between the diaphragms to define basket modules where heat exchange elements [22a] are received. A modular rotor can be modified by removing pairs of adjacent unitary rotor modules [20] and replacing each pair with the semi-modular rotor module [52]. |
