Chap10
1
Stationary Rotating surface (steel) Simplest design. (Labyrinth materials: aluminum, bronze, babbitt or steel) Low pressure High pressure Leakage path Stationary Rotating surface (steel) Low pressure High pressure Leakage path (a) More difficult to manufacture but produces a tighter seal. (Same material as in a.) (b) Rotating labyrinth type, before operation. (Sleeve material: babbitt, aluminum, nonmetallic or other soft materials) (c) Rotating labyrinth, after operation. Radial and axial movement of rotor cuts grooves in sleeve material to simulate staggered type shown in b. (d) Rotating surface (steel) Low pressure High pressure Stationary sleeve Rotating surface Low pressure High pressure Leakage path Stationary sleeve
description
Chapter10
Transcript of Chap10
-
Statio
nary
Rotatin
g surfa
ce
(steel)
Sim
plest d
esign. (L
abyrin
thmateria
ls: a
luminum, b
ronze,
babbitt o
r steel)
Low
pressure
High
pressure
Leakage
path
Statio
nary
Rotatin
g surfa
ce
(steel)
Low
pressure
High
pressure
Leakage
path
(a)
More diffic
ult to
manufacture
but p
roduces a tig
hter s
eal.
(Same m
ateria
l as in
a.)
(b)
Rotatin
g la
byrin
th ty
pe,
before operatio
n. (S
leeve
materia
l: babbitt, a
luminum,
nonmetallic
or o
ther
soft m
ateria
ls)
(c)
Rotatin
g la
byrin
th, a
fter
operatio
n. R
adial a
nd axial
movement o
f rotor c
uts
grooves in
sleeve m
ateria
l tosim
ulate staggered ty
pe
shown in
b.
(d)
Rotatin
g surfa
ce
(steel)
Low
pressure
High
pressure
Statio
nary sleeve
Rotatin
gsurfa
ce
Low
pressure
High
pressure
Leakage
path
Statio
nary sleeve
