| 主权项 |
1. A pack-box for rotary machinery comprising:
a rotary bearing concentrically disposed within the pack-box such that a portion of an outer circumference of the rotary bearing is transversely fixed to an inner wall of the pack-box such that the rotary bearing does not slide substantially transversely within the pack-box, wherein the rotary bearing comprises a material having a known coefficient of thermal expansion in a transverse direction; a first packing ring having a first side and a second side, wherein the first side of the first packing ring is adjacent to a shoulder end of the rotary bearing; an internal retaining ring disposed between the inner wall of the pack-box and the first packing ring; multiple packing rings arranged on the second side of the first packing ring; a packing gland follower disposed adjacently to a last packing ring of the multiple packing rings, wherein the last packing ring is disposed furthest from the shoulder end of the rotary bearing; a first thermal expansion channel defined by a wall-step of the pack-box, a first step of the pack-box, a first end of the rotary bearing, wherein the first end of the rotary bearing is oppositely disposed from the shoulder end of the rotary bearing, and a journal; and a second thermal expansion channel defined by the shoulder end of the rotary bearing, the first side of the first packing ring, a first side of the internal retaining ring, and the inner wall of the pack-box, wherein the first thermal expansion channel is configured to receive the rotary bearing thermally expanding in a first transverse direction, and wherein the second thermal expansion channel is configured to receive the rotary bearing thermally expanding in a second transverse direction. |
