Adjustable compressor bundle insertion and removal system

A compressor comprising:

• a casing having an annular cavity formed therein, the cavity being stepped to include a first circumferential surface of a first size, and a second circumferential surface of a second size, less than the first size;
• a compressor bundle being stepped to include a first circumferential surface substantially of the first size, and a second circumferential surface substantially of the second size;
• and
• at least one roller member retractably mounted in the casing, the roller member being adjustable between a first position, wherein the roller member is retracted from the cavity to rollingly support the first circumferential surface of the compressor bundle substantially in alignment with the first circumferential surface of the cavity, and a second position, wherein the roller member is extended into the cavity to rollingly support the second circumferential surface of the compressor bundle substantially in alignment with the second circumferential surface of the cavity.

An adjustable compressor bundle insertion and removal system comprising:

• a casing having an annular cavity formed therein, the cavity being stepped to include a first circumferential surface of a first size and a second circumferential surface of a second size, less than the first size;
• a compressor bundle being stepped to include a first circumferential surface substantially of the first size and a second circumferential surface substantially of the second size;
• a first roller member retractably mounted in the casing, the first roller member being adjustable between a first position, wherein the first roller member is retracted from the cavity to rollingly support the first circumferential surface of the compressor bundle substantially in alignment with the first circumferential surface of the cavity, and a second position, wherein the first roller member is extended into the cavity to rollingly support the second circumferential surface of the compressor bundle substantially in alignment with the second circumferential surface of the cavity;
• a cradle having a support surface for supporting the compressor bundle adjacent the casing;
• and
• a second roller member retractably mounted on the cradle, the second roller member being adjustable between a first position, wherein the second roller member is retracted to a position adjacent the support surface to rollingly support the first circumferential surface of the compressor bundle substantially in alignment with the first circumferential surface of the cavity, and a second position wherein the second roller member is extended from the support surface to rollingly support the second circumferential surface of the compressor bundle substantially in alignment with the second circumferential surface of the cavity.

A method of maintaining a movable compressor bundle in alignment with a stationary compressor casing comprising the steps of:

• forming an annular cavity in the compressor casing to be stepped to include a first annular portion of a first size and a second annular portion of a second size, less than the first size;
• forming the compressor bundle to be stepped to include a first annular portion substantially of the first size and a second annular portion substantially of the second size;
• mounting a retractable roller member in the first annular portion of the casing;
• retracting the roller member into the casing to receive and rollingly support the first annular portion of the compressor bundle substantially in alignment with the first annular portion of the compressor casing;
• and
• extending the roller member into the cavity to receive and rollingly support the second annular portion of the compressor bundle substantially in alignment with the second annular portion of the compressor casing.