Putting Into Operation; Mechanical Installation - Valmet SMART-PULP Operating And Installation Instructions

SMART-PULP

1 PUTTING INTO OPERATION

1.1 MECHANICAL INSTALLATION

1.1.1 Points of importance in installation
• The pipe's inside diameter must be at least 100
mm, and flow velocity must be as shown in the
APPLICATION chapter. If required, the pipe
diameter can be altered so as to achieve the desired
flow velocity.
• Pulp flow must be laminar.
• The pipe should have sufficiently long straight
sections of uniform diameter both upstream and
downstream from the transmitter (Fig. 1.1.1a).
Minimum lengths of straight pipe sections:
L = k x D; L
1min 2min
16
v = 5 m/s
4
15
3
14
2
13
12
11
10
1
9
8
k
7
0.5
6
5
4
3
2
1
0
0 1 2 3 4
Figure 1.1.1a Determination of coefficient k as a function of pulp consistency and flow velocity
(see Fig. 1.1.2a)
Smart Consistency Transmitter
Before installing the process coupling, make
sure that the process line is empty and
= 0.3 x L + 250 mm
1min
5 6 7 8 9 10 11 12 13 14 15 16
Consistency %
WARNING !
depressurized !
• The transmitter must be mounted at 90
the pump axis and on the side of the line indicated in
Figure 1.1.1a, i.e. on the side where the pulp is
discharged from the pump.
NOTE! The direction of a pipe bend downstream
from the transmitter has no effect.
Example
D = 250 mm, Cs = 3 %, v = 2 m/s
L = 8.5 x 250 = 2125 mm
1min
L = 0.3 x 2125 + 250 = 887 mm
2min
L
2
NOVE
400
pneum
SMART-
PULP
L
1
2
BCs160VA
Nov. 15, 1997
O angle to
L
2
SMART-
PULP
L
1
D
D
NOVE
manual