B B
Ring as assembled on rod
AA
B
Pressure Side
“BT” Packing Ring单作用环
Ring as assembled on rod
Ring as assembled on rod
Double Acting Rings Either Side May Face Pressure
2nd Stage Cylinder
Section No. 2
Section No. 3
End Section
ORing
Inlet Section
Section No. 1
2nd Stage Cylinder
Section No. 2
Section No. 3
End Section
ORing
Inlet Section
ORing
Inlet Section
2nd Stage Packing
Section No. 1
Section No. 2
Section No. 3
End Section
ORing
Inlet Section
2nd Stage Packing
Section No. 1
Section No. 2
Section No. 3
Section No. 3
End Section
1st Stage Cylinder
ORing
Removing air from the lubricator line.
单流阀
盘根
填料环
A
(Ring as assembled on rod)
Total opening at one cut only = Rod Dia. x .010”
Valve Losses
Valve Losses
Volume
Pressure
原理
PV/T=定量
等熵绝热过程 在一定的温度下，体积增大，
压力减小；反之亦然。
P2
P2线代表排出压力
PRESSURE
P1线代表吸入压力 P1
.
VOLUME
P2
P2线代表排出压力
P1线代表吸入压力 P1
PRESSURE
VOLUME
Section No. 2
Section No. 3
End Section
1st Stage Packing
ORing
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
1st Stage Packing
ORing
Inlet Section
ORing
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
1st Stage Cylinder
ORing
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
MAXIMUM CYLINDER VOLUME
CRANK END
INBOARD DEAD CENTER
Typical Single Acting P-V Diagram
USEFUL WORK
LOSS DUE TO DISCHARGE VALVE
LOSS DUE TO SUCTION VALVE
Typical Double Acting PV Diagram
“BD” Packing Ring双作用环
Seal Rings Required in a Packing Case
• 2000 (Biblioteka ) psi ……………….5-7 rings
• 800-2000…………………..4-6 rings • 300-800……………………3-5 rings • below 300…………….……2-4 rings
十字头
十字头销拆除
十字头销拆除
十字头拆除
连杆拆除
分配器
过滤器
注油泵3/8″
注油系统
无油流开关 爆破片
典型注油泵工作过程
无油流开关
DNFT-PRG
分配器
SMX Metering Element Chart
Metering Element Size
SMX-08
Delivery In3 (Twin)
Section No. 2
Section No. 3
End Section
1st Stage Cylinder
ORing
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
1st Stage Cylinder
ORing
Inlet Section
1st Stage Cylinder
ORing
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
1st Stage Cylinder
ORing
Inlet Section
Section No. 1
Section No. 2
.005
Delivery In3 (Single)
.010
Element Part Number
641516
SMX-12
.0075
.015
641790
SMX-16
.010
.020
641517
SMX-25
.015
.030
641518
SMX-35
.020
.040
641519
SMX-40
.025
.050
641520
刮油环
Correct Orientation of Wiper Rings
活塞环
Piston Ring
One Piece But Cut
Two Piece Angle Cut
One Piece Angle Cut
Three Piece Step Cut
Cylinder bore
Counterbore
P2
P2线代表排出压力
P1线代表吸入压力 P1
PRESSURE
VOLUME
排气阀开启
P2
P2线代表排出压力
P1线代表吸入压力 P1
PRESSURE
VOLUME
P2线代表排出压力 P2 P1线代表吸入压力 P1
PRESSURE
VOLUME
P2
P2线代表排出压力
P1线代表吸入压力 P1
PRESSURE
Typical Configuration
连杆通过大 头瓦与曲轴
相连
压缩机剖面动态图
刮油盘根
盘根注油
活塞杆 盘根
进气阀
曲轴箱
连杆通过小 头瓦与十字
头相连
活塞杆
排气阀
DISCHARGE VALVE CLOSES
DISCHARGE VOLUME
DISCHARGE VALVE OPENS
PRESSURE
Section No. 2
Section No. 3
End Section
ORing
Inlet Section
Section No. 1
2nd Stage Cylinder
Section No. 2
Section No. 3
End Section
ORing
Inlet Section
Section No. 1
Section No. 1
Section No. 2
Section No. 3
End Section
1st Stage Cylinder
ORing
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
1st Stage Cylinder
Section No. 3
End Section
ORing
Inlet Section
2nd Stage Packing
Section No. 1
Section No. 2
Section No. 3
End Section
ORing
Inlet Section
Section No. 1
2nd Stage Cylinder
Seal
= gas pressure
Piston movement
Piston
Seal
支撑环
Rider Ring / Band
Using rider rings or rider bands to support the piston off of the bore
Section No. 3
End Section
ORing
2nd Stage Cylinder
Inlet Section
Section No. 1
Section No. 2
Section No. 3
End Section
ORing
2nd Stage Cylinder
Inlet Section