Page 185 - Reciprocating Compressors Operation Maintenance
P. 185
Operation and Maintenance of Reciprocating Compressors 171
One pair radial-tangent packing rings
The tangent ring will make • complete seat except at
the gaps which permit compensation for wear. These
Clearance hole In radial ring 0()we| pjn )(| tanflent ||ng are covered by the segments of the radial ring.
X
prevents lolnle of radial /
lln
, and tangent, from *"'" »- v ^==|=5^ Qae tight Joint
,„.-_ ~—-Seal made be-
Pressure^saKaas^ tween tangent
ring and
packing ease.
Packing Case
Radial Ring yi Three radial cuts In radial ring permit
Tangent Ring compensation for wear and provide access
for pressure build-up and relief.
FIGURE 3-29. Tangent-cut sealing rings. (Source: France Compressor
Products, Newton, Pennsylvania).
NEW RING RING WORN TO BUTT GAP
DIRECTION Of MOV1MINT
, . OF SEGMENT AS BORE
V IS WORN AWAY
FIGURE 3-3O. Sealing ring condition as wear takes place. (Source: France
Compressor Products, Newton, Pennsylvania).
Packing ring joints remain In contact despite variations In bore fit.
Rod Underslze or
Ring Underslze - ^^ Ring Oversize
FIGURE 3-31. Sealing ring alignment with variations in bore fit. (Source:
France Compressor Products, Newton, Pennsylvania).
