Catalog KRAL Pump Stations. DKC/DMC Series.

Transcription

KRAL Pump Stations.
DKC/DMC Series.
Catalog
DKC/DMC Series
Edition 07/2011
2
DKC/DMC Series Edition 07/2011
Catalog
Description
□
□
□
Type code
5
Structure
6
Function description
▪ Functional principle
▪ Reversing valve
▪ Expansion valve
▪ Pressure measurement
▪ Protection against soiling
7
7
7
7
7
8
Technical data
□
□
□
□
□
Operational limits
9
Materials
9
Required NPSH values
▪ Internal pressure loss of the pump
station
10
11
Weights
▪ Weight tables pump
▪ Weight table pump station
▪ Filling volume
12
12
12
13
Noise levels
13
□
□
□
□
□
□
Strainer cover protection
31
Oil leakage monitoring
32
Pump change-over device
33
Mounting
34
Built-on Volumeter OMA
34
Heating system
▪ Electric heating system
▪ Fluid heating system
▪ Special heating system
35
35
37
37
KRAL Pump Stations – DKC/DMC Series
Table of contents
General drawings
□
□
General drawings
39
Spare parts
44
Dimensions
□
□
□
□
Dimensions DKC
15
Dimensional drawings DKC
▪ Pump station DKC Standard
▪ Pump station DKC with two-way valve
▪ Pump station DKC with base frame
with oil pan
▪ Pump station DKC with two-way valve
and base frame with oil pan
15
15
17
Dimensions DMC
21
Dimensional drawings DMC
▪ Pump station DMC Standard
▪ Pump station DMC with two-way valve
▪ Pump station DMC with base frame
with oil pan
▪ Pump station DMC with two-way valve
and base frame with oil pan
21
21
22
18
20
23
24
Options
□
□
□
□
□
□
Overview
25
Two-way valve
▪ Limit switch
▪ Actuators
26
26
27
Pressure maintaining valve
28
Pressure switch
▪ Specifications of the pressure switch
29
29
Differential pressure monitoring at the
strainer
▪ Specifications of the differential
pressure indication
Temperature monitoring
Catalog
30
30
31
3
4
Catalog
Description
Description
Type code
Type code
2
6
4
DKC- 2400.BBBA.00002
1
3
5
7
1
2
3
4
5
6
7
Model
Size
Seal type
Pressure stage
Two-way valve
Heating system
Version index
Item Designation
Type
1
DKC: Pressure build-up up to 16 bars
Model
DMC: Pressure build-up up to 40 bars
2
Size
Corresponds to flow rate in [l/h] at motor speed
3
Seal type
A: Standard mechanical seal
B: Mechanical seal of hard material
C: Standard radial shaft seal
D: Magnetic coupling
E: Mechanical seal with quench
F: Radial shaft seal, high-temperature model
X: Special seal
4
Pressure
maintaining
valve
A: Without pressure maintaining valve
B: Internal pressure maintaining valve, pressure stage 2–8 bars
C: Internal pressure maintaining valve, pressure stage 6–20 bars
D: Internal pressure maintaining valve, pressure stage 15–38 bars
E: External pressure maintaining valve, pressure stage 2–8 bars
F: External pressure maintaining valve, pressure stage 6–20 bars
G: External pressure maintaining valve, pressure stage 15–38 bars
5
Two-way valve
A: Without suction-side two-way valve
B: Suction-side two-way valve, manually operated
C: Suction-side two-way valve, manually operated and limit switch
D: Suction-side two-way valve, electrically operated and limit switch
E: Suction-side two-way valve, pneumatically operated and limit switch
6
Heating system A: Without heating system
B: Electric heating system in the block
C: Fluid heating system in the block
D: Electric heating system in the block and at the pumps
E: Fluid heating system in the block and at the pumps
7
Version index
For internal administration
Tab. 1 Type code
Catalog
5
Description
Structure
Structure
5
4
6
3
3
2
2
1
7
10
8
9
Fig. 1
1
2
3
4
Station structure
Station block
5
Hoisting eye
6
Suction-side pressure gauge 7
Strainer cover
Pressure-side pressure gauge 8 Pump
Reversing valve lever
9 Pressure connection
Vent valve
10 Suction connection
Station block sizes
Terms used
Station with pump sizes K 5–42 / M 5–54
Small pump station
Station with pump sizes K 55–118
Large pump station
PI
LFO
TI
M
Suction Side
PI
M
Pressure Side
HFO
TI
PI
Fig. 2
6
Hydraulic scheme
Catalog
Functional principle
The pump stations of the DKC/DMC series are suitable for the parallel operation of two KRAL pumps of
the M or K series.
The station is connected to the piping system by means of the suction connection 10 at the front of the
station. Depending on the position of the reversing valve 6, the left-hand, the right-hand or both strainers
are connected to the suction connection. The pumped liquid flows through the strainer from top to bottom and thus reaches the suction connection of the attached pumps. There the pressure of the pumped
liquid is increased which finally returns to the station through the pressure connection of the pump. The
liquid flows through a return valve in an integral duct into the lower part of the station and via the reversing valve to the pressure connection 9, through which the liquid leaves the station again.
Reversing valve
If the reverseing valve lever 6 is in one of the two
side positions, the respectively other line of the
station is separated from the liquid circuit so that
the strainer of this line can be opened and cleaned. If the lever is in the center position, both
lines are connected to the liquid circuit. The delivery rate can thus be increased through parallel
operation of the two pumps. If only one pump is
being operated, the second pump can be cut in
automatically if the delivery rate or the pressure
drops at the active line.
Fig. 3
Positions of the reversing valve
In order to ensure a uniform distribution of the operating hours, an interval-controlled automatic switchover between the two pumps is also possible in this valve position. The return valves ensure that the
respective pump that is stopped does not begin to rotate backwards.
Due to its metal sealing the reversing valve always has a low amount of leakage.
Expansion valve
The liquid volume in the respectively blocked line of the station could result in an impermissibly high
inner pressure due to heating up through thermal expansion. In order to prevent this, the cylinder of the
reversing valve contains two small spring expansion valves that vent any overpressure in the respectively active line of the station.
Pressure measurement
A pressure gauge 5 is located in the center of the station in order to monitor the delivery pressure. The
pressure gauge is always connected to the pressure side of the station and is thus independent of the
position of the reversing valve 6. In order to monitor the pressure on the suction sides of the two pumps,
two further pressure gauges 3 are mounted. These pressure gauges show only the respective pressure
at one of the two strainers and can be used to monitor the degree of soiling of the strainers. The pressure gauge in the blocked line shows only the inner pressure of the blocked strainer. The stopcocks at
the pressure gauges may only be opened to read the pressure values.
Catalog
7
Description
Description
Protection against soiling
1
2
1 Strainer cover
2 Strainer insert
The station is equipped by default with strainers. These strainers are designed to separate soiling that is
normally not contained in the pumped liquid. Due to their small size the strainers cannot separate larger
amounts of soiling occurring regularly, nor abrasive fine particles. If such operating conditions occur, the
station has to be protected additionally by a correspondingly dimensioned operating filter. Very fine
abrasive particles cannot be held back by the operating filter and result in increased wear to the pumps.
As an alternative the strainer can be replaced during commissioning by a fine-meshed commissioning
strainer. The commissioning strainer can be ordered at KRAL. A further possibility is the use of an external commissioning filter.
The strainer inserts 2 are metallic and can be removed, cleaned and re-used after the strainer cover 1
has been opened.
Options
□
□
□
□
Strainer
Usage
Viscosity
[mm2/s]
Mesh width
[mm]
Separation of coarse soiling during
operation
< 20
0.25
> 20
0.50
Commissioning
strainer
Protection of the station during commissioning —
0.02
Commissioning
filter
Protection of the station during commissioning —
0.02
Operating filter
Protection of the station during operation
depending on
pumped liquid
Tab. 2 Strainer/filter and mesh widths
8
Catalog
Technical data
Technical data
Operational limits
Operational limits
DKC
DMC
Operating pressure max. [bar]
16
40
Temperature max. [°C]
180
180
Temperature min. [°C]
for pump materials
–20
–20
Viscosity [mm /s]
min.–max.
2–10000
2–10000
Feed pressure max. [bar]
6
6
2
Materials
DKC
Material name
DMC
Material no.
Material name
Material no.
Station block
Housing
EN-GJS-400-15 EN-JS1030
EN-GJS-400-15 EN-JS1030
Strainer cover
S235JR
S235JR
1.0037
1.0037
Pump
Housing
□
□
Standard
EN-GJS-400-15 EN-JS1030
ENAC-AlSi10Mg —
Marine design
—
EN-GJS-400-15 EN-JS1030
Screw set
16MnCrS5
1.7139
16MnCrS5
1.7139
Flange cover
□
□
Catalog
Standard
EN-GJS-400-15 EN-JS1030
ENAC-AlSi10Mg —
Marine design
—
EN-GJS-400-15 EN-JS1030
Bearing cover
—
EN-GJS-400-15 EN-JS1030
End cover
EN-GJS-400-15 EN-JS1030
EN-GJS-400-15 EN-JS1030
9
Technical data
The following table shows the required NPSH values during operation with a low-volatility pumped liquid
such as lubricating oil or hydraulic fluid.
The following examples indicate that when pumped liquids have a readily volatile component content
the required NPSH values notably increase:
□
□
Fuel oil requires an NPSH value of at least 6 mWC.
When the pumped liquid contains water (e.g. heavy fuel oil), the values in the table have to be increased by the vapor pressure of the water at the specified operating temperature.
The required NPSH value also needs to be increased if there are gas contents, regardless of whether it
is dissolved or not. If in doubt, please contact KRAL.
Size
Viscosity
Rotation [min-1]
[mm2/s]
1450 1750 2900 3500
Size
Viscosity
Rotation [min-1]
[mm2/s]
1450 1750 2900 3500
NPSH value [mWC]
K5
K 7.5
K 10
K 15
K 20
K 32
6
2
37
NPSH value [mWC]
K 42
6
2
2
37
2
152
2
152
2
380
2
380
2.5
6
2
6
2
37
2
37
2
152
2
152
2.1
380
2
380
2.5
6
2
6
37
2
152
2
380
2
6
2
37
2
152
2
380
2
6
2
37
2
152
2
380
2.2
6
2
37
2
152
2
380
2.2
K 55
2.3
3.5
4
4.8
2.7
4.0
2
2.6
3.0
37
2
2.9
3.4
2.3
152
2.3
2.5
3.3
4.1
3.1
380
2.7
3.0
4.4
5.0
6
2
2.8
3.4
37
2
3.1
3.8
2.2
152
2.4
2.6
3.8
4.6
3
380
2.8
3.1
4.6
5.8
6
2
2.7
3.2
37
2
2.2
3
3.6
2.7
2.4
2.7
152
2.4
2.6
3.6
4.4
3.2
3.8
380
2.8
3.1
4.4
5.4
6
2
3.1
3.9
37
2.2
3.5
4.4
K 118
2.4
2.8
3.3
K 105
2.4
2.6
3.5
K 85
2.7
2.7
2.1
2.8
2.6
74
2.6
2.3
2.3
2.6
152
2.5
2.8
4.3
5.4
3.1
3.7
380
3
3.3
5.3
6.8
Tab. 1 Required NPSH values for K-pump
10
Catalog
Size
Viscosity
Rotation [min-1]
[mm2/s]
1450 1750 2900 3500
Size
Viscosity
Rotation [min-1]
[mm2/s]
1450 1750 2900 3500
NPSH value [mWC]
M5
M 7.5
M 10
M 15
M 20
6
2
37
NPSH value [mWC]
M 26
6
2
2.2
2.7
2
37
2
2.2
2.7
152
2
152
2
2.9
3.5
380
2
380
2.3
3.9
4.8
6
2
6
2
37
2
37
2
152
2
152
2
2.3
2.7
380
2
380
2,1
3
3.5
6
2
6
2
2.2
2.7
37
2
37
2
2.2
2.7
152
2
2.3
152
2
2.9
3.5
380
2
2.5
380
2,3
2.6
3.9
4.8
6
2
6
2
2.1
3
3.7
37
2
37
2.1
2.3
3.4
4.2
152
2
2.2
152
2.5
2.7
4.1
5.1
380
2
2.9
380
3
3.3
5
6.3
6
2
2.1
37
2
2.1
152
2
380
2.1
M 32
2.3
2.5
M 42
2.1
2.3
M 54
2.6
2.3
2.4
2.8
3.1
3.7
2.6
2.2
Tab. 2 Required NPSH values for M-pump
Internal pressure loss of the pump station
When determining the NPSH value of the pump station also take into account the internal pressure losses in the ducts of the station, in the reversing valve and particular in the strainer. The following diagram
shows as an example the overall pressure loss from the suction connection of the station up to the suction flange of the pump at operation with a clean strainer.
0,12
0,10
ν ≈ 14 mm²/s
∆p [bar]
0,08
0,06
0,04
0,02
0,00
0
20
40
60
80
100
120
Q [l/min]
∆p Pressure loss
Q Delivery rate
Catalog
11
Technical data
Weights
Motor weight
[kg]
Weight tables pump
Motor size
Technical data
Weights
K5
K 7.5
K 10
K 15
K 20
K 32
K 42
K 55
K 74
K 85
K 105
K 118
M5
M 7.5
M 10
M 15
M 20
M 26
M 32
M 42
M 54
Steel
Alu
Steel Alu
Steel
4,5
5
9,5
15
Weight of pump with free shaft end [kg]
8
10,5
21,5
11
Weight of pump bracket with coupling and screws [kg]
71
8
—
3,5
—
80
10
3,5
5
7
9
90S
12
3,5
6
7
7
90L
14
3,5
6
7
7
100L 21
4,5
3
—
10
10
112M 28
—
3
—
10
10
132S 39
—
4
—
12
12
132M 45
—
4
—
12
12
160M 110
—
5,5
—
160L 120
—
5,5
—
Tab. 3 Weights K- and M-Pumps and motors
Weight table pump station
Part
Weight [kg]
Small pump station
Large pump station
Station block with strainer and reversing valve 58
90
Internal pressure maintaining valve
1.3
1.9
External pressure maintaining valve
13
16.5
Two-way valve, manually operated
8.1
14
Actuator, electrical
7.3
7.3
Actuator, pneumatic
5.8
5.8
Differential pressure indication
2.2
2.3
Base frame with oil pan
21
26
Counter flanges, 2 pc.
2.3
2.6
Pump with coupling and motor
See weight tables pump
Tab. 4 Weights for pump station
12
Catalog
Technical data
Noise levels
Filling volume
Small pump station Large pump station
Filling volume of the station block [l]
8
13
Tab. 5 Filling volume of the station block
Noise levels
Size
Noise level max. ±3 [dB(A)]
1 Pump
2 Pumps
Motor
1 Pump + 1 Motor
2 Pumps + 2 Motors
K 5 – 42
56
59
57
60
63
K 55 – 118
61
64
65
67
70
M 5 – 54
59
62
69
70
73
Tab. 6 Noise levels
Catalog
13
14
Catalog
Dimensions DKC
Station size
DKC
Pump size
240 – 2400
K 5 – 20
Motor
size
H1
H2
B1
B2
B3
B4
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
71
590
682
561
382
437
534
80
645
737
604
398
453
541
688
780
618
405
460
558
651
743
637
410
465
562
694
786
651
417
472
569
755
847
707
438
493
590
756
848
715
473
548
627
817
909
771
494
569
648
940
1032
807
508
583
662
90
1600 – 5000
K 32 – 42
80
90
DNs /
DNd
SAE 1 1/2"
3000 PSI
Dimensions
Dimensions
Dimensions DKC
3000 – 13000 K 55 – 118 90
100/112
132
SAE 2"
3000 PSI
100/112
100
117
244
M
16
H1
Pump station DKC Standard
132
B2
B1
45
Fig. 1
Catalog
DNd
205
125
281
DNs
Pump sizes K 5–42
15
108
85
M1
6
50
H1
305
140
B2
B1
DNs
45
Fig. 2
16
248
DNd
148
347
Dimensions
Pump sizes K 55–118
Catalog
Dimensions
Pump station DKC with two-way valve
DNd
55
DNs
205
125
50
336
B3
B1
DNs
250
Fig. 3
Pump sizes K 5–42
DNd
248
148
60
422
B3
B1
15
DNs
DNs
280
Fig. 4
Catalog
17
H2
Pump station DKC with base frame with oil pan
297
DNd
217
336
DNs
19
90
270
500
B4
B1
76
Dimensions
480
550
600
Fig. 5
18
Pump sizes K 5–42
Catalog
H2
Dimensions
340
DNd
240
397
DNs
18
100
340
600
132
B4
B1
600
660
700
Fig. 6
Catalog
19
Pump station DKC with two-way valve and base frame with oil pan
DNd
297
5
217
71
B4
B1
DNs
DNs
250
480
19
550
90
270
500
600
Fig. 7
Pump sizes K 5–42
DNs
DNs
18
600
100
660
20
340
600
700
Fig. 8
340
DNd
15
240
B4
B1
117
Dimensions
Catalog
Dimensions
Dimensions DMC
Dimensions DMC
Pump size
Motor
size
240 – 1200
M 5 – 10
71
800 – 2600
M 15 – 26
H1
H2
B1
B2
B3
B4
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
578
670
592
393
448
545
80
635
727
635
410
465
562
90
678
770
649
417
472
569
80
694
786
637
410
465
562
737
829
651
417
472
569
781
873
707
436
493
590
694
786
637
410
465
562
90
737
829
651
417
472
569
100/112
781
873
707
436
493
590
132
908
1000
744
451
506
604
90
100/112
1600 – 6500
M 32 – 54
80
DNs /
DNd
SAE 1 1/2"
3000 PSI
Station size
DMC
100
117
244
M
16
H1
Pump station DMC Standard
132
B2
B1
45
Fig. 9
Catalog
DNd
205
125
281
DNs
Pump sizes M 5–54
21
100
117
244
M
16
H1
Pump station DMC with two-way valve
132
B3
B1
55
DNs
DNd
205
125
50
336
Dimensions
DNs
250
Fig. 10 Pump sizes M 5–54
22
Catalog
Dimensions
Pump station DMC with base frame with oil pan
217
DNd
297
336
H2
DNs
19
90
270
500
76
B4
B1
480
550
600
Catalog
23
Pump station DMC with two-way valve and base frame with oil pan
DNd
217
5
297
B4
B1
71
Dimensions
DNs
250
DNs
480
19
550
90
270
500
600
24
Catalog
Options
Options
Overview
Overview
Option
Option
Two-way valve
page 26
page 31
Limit switch
page 26
page 31
Electrical actuator
page 27
page 32
Pneumatic actuator
page 27
page 33
Betrieb
Entriegeln
Alarm
Prüfen
Alarmton
Pumpe 1
Betrieb
Pumpe 1
Störung
Entriegelung
Pumpe 1
aus
ein
Pumpe 2
Betrieb
Pumpe 2
Störung
Entriegelung
Pumpe 2
Alarm
Pumpe 1
Pumpe 2
Pumpen - Steuerung
Aus
Catalog
Internal pressure
maintaining valve
page 28
Mounting
page 34
External pressure
maintaining valve
page 28
Built-on volumeter OMA
page 34
Pressure switch
page 29
Electric heating system
page 35
Differential pressure
monitoring
page 30
Fluid heating system
page 37
25
Options
Two-way valve
Two-way valve
Positions of the two-way valve
1
2
1
2
Two-way valve lever
Two-way valve
A two-way valve 2 is available at the suction-side SAE connection as an option. This allows the station
to be connected to two piping systems with different pumped liquids. When the lever 1 is moved by 90°,
the system switches over between the two suction-side connections of the two-way valve.
Limit switch
braun / brown
+UB 10 - 30V DC
schwarz / black
PNP
blau / blue
Signal
Gnd
Connection assignment
2
1
3
1
2
3
Two-way valve lever
Two-way valve
Two-way valve limit switch
As an additional option, a limit switch 3 that is used to monitor the lever position at the two-way valve
remotely is available.
26
Catalog
Options
Two-way valve
Actuators
In order to operate the valve automatically, an electrical or pneumatic actuator can be installed.
Electrical actuator
Kondensator
Condenser
10
11
12
1
2
3
Temperaturwächter
Temperature control
Auf / Open
Zu / Close
1-ph AC
4
Auf
Open
5
Wegschalter
Way switch
Zu
Close
6
Auf
Open
Zu
Close
Heizwiderstand
Heating resistor
20
22
25
Zus. Wegschalter
Add. Way switch
Zu
Close
Connection assignment
Pneumatic actuator
4
2
2
Catalog
Compressed-air connection
27
Options
1
2
1
2
An internal pressure maintaining valve 1 can be installed optionally in order to ensure a constant supply
pressure even when the liquid requirement of the system varies. The valve is mounted in a vertical duct
between the suction and the pressure connection of the station. A spring-loaded cylinder opens a
bypass between the pressure and suction sides when the setpoint pressure is exceeded. In this manner
the free cross-section and thus the overflowing volume flow is controlled so that the delivery pressure
remains constant to a great degree.
A further option is an external pressure maintaining valve 2 for mounting to the pressure connection of
the station block. At this valve the overflowing flow rate is not supplied directly to the suction end as at
an internal valve, but rather directed outwards via an additional flange connection. We recommend this
constellation if overheating of the station block would be caused by large overflow amounts or if highly
volatile liquid components could arise through the pressure reduction during overflowing of outgassing
or evaporation. Usually in these cases the overflowing amount is directed to a degassing vessel or
reservoir and then returned from there to the suction line or the feeder reservoir.
Pressure peaks
As a mechanical regulating valve the pressure maintaining valve has a certain sluggishness. Brief pressure peaks can therefore arise at rapid flow rate changes (such as the use of quick-acting valves, starting of the pump without soft start) and stiff piping systems. If this may result in operating problems or
damage to the system components, a pulsation damper can be installed into the piping system. As an
alternative such a pulsation damper can also be mounted directly on the pump station. This pulsation
damper is available from KRAL.
28
Catalog
Options
Pressure switch
Pressure switch
It is optionally possible to install a pressure
switch 1 on the bottom of the station as an
additional pressure monitoring device.
1
1
Pressure switch
Specifications of the pressure switch
Figure
Criterion
Data
Dimensions
Sensor:
Measuring range:
Output:
FKM-Membrane
1 – 16 bar
Floating change-over
contact
big; not adjustable
±0,5...±2,0 % FS typ.
0...+80 °C
0...+80 °C
-40...+80 °C
IP65*
Differential gap:
Repeatability:
Operating temperature:
Fluid temperature:
Storage temperature:
Degree of protection:
A
A Pressure connection
* only if female connector is mounted according to
instructions
Pressure connection
Differential gap approx.*:
Operating pressure max.:
Pressure connection:
Tightening torque:
0.4 – 1.7
200 bar
G1/4"; female
32 – 40 Nm
A
A Pressure connection
* depending on the preset value
Electrical connection
Male plug:
Female connector:
- Cable diameter:
- Terminal screws:
Microswitch
Rating AC:
Rating DC:
Resistance of insulation:
Electric strength:
Mechanical lifetime:
Catalog
DIN43650-A
6...13 mm
4 x 0.5...1.5 mm2
250 V 10 (3) A
250 V 0.1 (0.05) A
220 V 0.25 (0.2) A
110 V 0.5 (0.3) A
24 V 2 (1) A
> 2 MW
2 kV terminal ground
1 Mio. cycles
29
Differential pressure monitoring at the strainer
1
2
2
In order to monitor the differential pressure at
the strainers, a differential pressure indication
can be established. Monitoring on the
corresponding site can be activated or
deactivated by opening or closing the ball
valves 2 on one side of the pump station. An
optical display 1 or also electrical contacts can
be used as monitoring organs.
Electrical contact:
By means of the movement of the piston stroke
the red segment of the indicator disc is visible
over a pressure range equal to 20–100 % of the
differential pressure. The first reed contact is
actuated at 75 %, and the second at 100 % of
the differential pressure.
Visual indicator:
The red colour of the indicator disc becomes
more intense with growing contamination of the
strainer as the differential pressure increases.
Detailed documents available on request.
1 Differential pressure indication
2 Ball valve
+
-
G1/4
G1/4
Specifications of the differential pressure indication
+
G1/4
7
G1/4
M20x1,5
7
Options
Differential pressure monitoring at the strainer
12
12
25
25
Data
Contact
Electrical data
□
□
□
□
□
Contacts
1 x NO
1 x NC
Load voltage max. [V ]
250
220
Frequency max. [Hz]
0...60
Switching current max. [A]
1.0
0.8
Load capacity max. [W/VA]
60/60
40/60
Operating data
□
□
30
Operating pressure max. [bar]
100
Operating temperature max. [°C] 150
Differential pressure Δp [bar]
0,5
Material
GD-AL
Degree of protection
IP 65
Wire connection
1 x Pg 13.5
Catalog
In order to monitor the temperature of the pumped liquid, two thermometers 1 that are mounted at the station block near the two strainer
chambers are available.
1
1 Thermometer
Detailed view
1
1 Vent screw
The standard strainer cover can optionally be replaced by special strainer covers with securing unit.
When the vent screw 1 is opened, the strainer chamber is vented. This avoids accidents through squirting pumped liquid.
Catalog
31
Options
Options
1
2
3
4
5
8
The leak oil monitoring device consists of the indication device and a PTC resistor sensor. The
indication device contains the components for
optical and acoustical alarm indication as well a
potential-free change-over switch for controlling
additional signal equipment. When the PTC resistor that is heated up in its operating state is
immersed into oil, it cools down, thus triggering
an alarm.
The leak oil monitoring device is unsuitable for
heavy fuel oil applications.
We recommend using the leak oil monitoring
device with an elevated oil pan.
Betrieb
Entriegeln
Alarm
Prüfen
Alarmton
aus
ein
6
7
3m
230 VAC
50 Hz
1
2
3
4
5
6
7
8
ϑ
Operation
Unlock
Alarm
Check
Signal
Off
On
Cable
Technical data
Power supply
230 V AC, 50 Hz, 10 VA
Output
□
□
□
32
1 visual alarm (red light)
1 acoustic alarm, can be switched off
(buzzer)
1 potential free change-over switch for
external signal max. 230 V AC, 3 A
Operating temperature
-5...+40 °C
Housing dimensions
163 x 97 x 62 mm
Protection class
II
IP41
Mounting
Wall mounting
Catalog
The pump change-over device provides several
functions to control double station pump units. It
is unsuitable for heavy fuel oil applications.
Pumpe 1
Betrieb
Pumpe 1
Störung
Entriegelung
Pumpe 1
Pumpe 2
Betrieb
Pumpe 2
Störung
Entriegelung
Pumpe 2
Alarm
Pumpe 1
Pumpe 2
Pumpen - Steuerung
Aus
Functions:
□ Selectable control switch On-Off-P1-P2automatic
□ Time clock for automatic switch
□ Protective motor relay
□ Monitor lamps P1 and P2
□ Fault indication
□ Fault alarm output for external fault report
□ Automatic switch-over in case of breakdown
of pump
□ Connection for pressure control
□ Connection for leak oil monitoring device
Technical data
Catalog
Supply voltage
220/380 V AC, 50 Hz
Control voltage
220 V AC, 50 Hz
Protective motor range
0.7 – 17 A
Housing material
Plastics
Housing dimensions
300 x 250 x 120 mm
IP 54
Mounting
Wall mounting
33
Options
Options
Mounting
Mounting
Mounting types
□ Mounting on base frame with oil pan
□ Bracket mounting
Fig. 1
Fig. 2
Bracket mounting
Fig. 4
Pump station with built-on OMA
Built-on Volumeter OMA
Fig. 3
KRAL Volumeter OMA Series
To measure the flow A KRAL Volumeter of the OMA series can be built on the pump station.
34
Catalog
Heating system
The pump stations can be equipped with an optional heating system. We recommend heaters for highviscosity liquids that do not flow sufficiently if not heated. This can result in excessive power consumption or lead to problems arising through cavitation or sealing.
Method of heating:
□ Electric heating system
□ Fluid heating system
□ Special heating system
5
4
3
2
1
1
2
3
4
5
Connecting cable
Heating element
Seal ring
Screw plug heating element
Seal ring
Operating data:
Voltage: 230 V
Power output:
▪ Small pump station with pump sizes K 5–42/M 5–54:
▪ Large pump station with pump sizes K 55–118:
□
□
□
□
□
220 W
2 x 220 W
Frequency: 50/60 Hz
Wire cross-section: 2 x 1 mm²
Filling volume:
0.40 l
0.12 l per heating duct
Scope of delivery
Catalog
Small pump station with pump sizes
K 5–42/M 5–54
Large pump stations with pump sizes
K 55–118
□
□
□
□
□
□
□
□
1 Heating element
1 Screw plug
2 Seal rings
0.5 l Thermal oil Caldo ISO 32
2 Heating elements
2 Screw plugs
4 Seal rings
0.25 l Thermal oil Caldo ISO 32
35
Options
Heating system
In the case of a small pump station the electric heating is installed in a heating duct within the station
block. The electric heating for the large pump station consists of two heating elements that are integrated in two heating ducts of the station block.
7
7
6
2
4
5
3
1
6
Fig. 5
1
2
3
4
8
6
Heating duct*
Fig. 6
Connecting cable
Heating element
Seal ring
Screw plug heating element
5
6
7
8
Heating element installation
Seal ring
Heating duct
Upper screw plug heating duct*
Lower screw plug heating duct*
* Figure 3 shows the large pump station. The small pump station disposes of only one heating duct with
one upper and one lower screw plug each.
The output of the heating element corresponds to the radiation and convection losses of the station in
the required temperature range so that overheating is not possible.
Heating up of the station block of the small pump station after the steady-state condition has been
reached:
□
□
Station rear: approx. 60 K
Station front: approx. 40 K
60
50
ΔT [K]
Options
Heating system
A
40
30
20
B
10
0
Fig. 7
36
0
10
20
30
Δt [min]
40
50
60
∆t
∆T
A
B
Heating-up time
Temperature rise
Station rear
Station front
Temperature rise after the heating has been switched on
Catalog
Options
Heating system
Fluid heating system
3
2
Fig. 8
1
2
2
1
Fluid heating system for small pump
station
Fig. 9
Piping
Straight screw connection
3
1
Fluid heating system for large pump
station
Swiveling screw connection
In the case of the fluid heating system the heating fluid passes through one or two heating ducts in the
station block. The screw connections required are available from KRAL. When setting the supplied liquid
and its temperature observe the respective operating limit values of the station and the attached pumps.
Operating data:
□ Maximum pressure: 16 bar
□ Maximum fluid temperature: 180 °C
□ Connection:
straight screw connection, outer diameter 28 mm
swiveling screw connection, outer diameter 22 mm and
straight screw connection, outer diameter 22 mm
Scope of delivery
Small pump station with pump sizes
K 5–42/M 5–54
Large pump station with pump sizes
K 55–118
□
□
□
□
□
2 Straight screw connections
1 Seal ring
1 Adapter sleeve
2 Swiveling screw connections
2 Straight screw connections
Special heating system
If special heating systems are installed, please contact KRAL.
Catalog
37
38
Catalog
General drawings
General drawings
General drawings
General drawings
300
472
893
739.3
076
893
739.1
304
076
502
739.1
606.3
164.1
405
502
914.1
739.4
165.1
739.5
901.1
228.2
914.1
405
901.2
423 165.2
606.1
611.4 611.2
914.1
611.1
228.1
611.3
165.2
423
165.4
914.1
901.2
165.3
116
705
739.4
705
914
Catalog
606.2
739.2
739.2
Fig. 1
228.1
164.2
165.1
165.4
165.3
165.2
165.1
Station block for pump sizes K 5–42/M 5–54 with pressure maintaining valve closure
39
General drawings
General drawings
893
300
472
076
739.3
739.1
502
304
405
228.2
164.1
606.3
914.1
739.4
606.1
739.5
739.5
165.3
165.3
611.2
611.3
611.4
611.1
165.2
606.2
423
914.1
739.2
116
228.1
705
739.2
739.4
705
165.3
165.3
165.3
165.4
164.2
914
Fig. 2
40
Station block for pump sizes K 55–118 with pressure maintaining valve closure
Catalog
General drawings
General drawings
914.2
629
424
739.6
424
629
Fig. 3
Fig. 4
493
483
482
481
Small pump station
483
Large pump station
Fig. 5
Catalog
Fig. 6
Screw connection fluid heating system
41
General drawings
General drawings
307
308
300
309.1
309.1
310
425.1
425.2
309.2
425.3
425.4
425.5
914
705
739.2
425.6
Fig. 7
914
739.2
705
Two-way valve / Limit switch two-way valve / Actuators
075
605
717
621
Fig. 8
42
225
Leak oil monitoring / Thermometer / Strainer cover protection /
Differential pressure monitoring / Base frame with oil pan
Catalog
General drawings
General drawings
607
Fig. 9
Pressure switch
529
901.2
180
729.1
001
894.2
729.2
225
Fig. 10 Pump station with mounted pumps
Catalog
43
General drawings
Spare parts
Spare parts
Spare part Part
No.
Spare part Part
No.
001
Pump
482
075
483
Screw connection fluid heating syst.
076
Strainer cover
493
Screw plug
116
Station block
502
Conical spring
164.1
Locking bolt
529
Motor
164.2
Screw plug
605
Differential pressure indication
165.1
Screw plug
606.1
Suction-side pressure gauge
165.2
Screw plug
606.2
Suction-side pressure gauge
165.3
Screw plug
606.3
Pressure-side pressure gauge
165.4
Screw plug
607
Pressure switch
180
Pump bracket
611
Non-return valve
225
611.1
Supporting ring
228.1
Hoisting eye
611.2
O-ring
228.2
Hoisting eye
611.3
Sealing washer
300
Reversing valve/ two way valve lever 611.4
Spring
304
Control plug
621
Leak oil monitoring system
307
Actuator, electrical
629
Valve housing
308
Actuator, pneumatic
705
Counter flange
309
Two-way valve limit switch
717
Thermometer
309.1
Proximity switch
729.1
Flat gasket
309.2
Bracket
729.2
Flat gasket
310
Mounting bracket actuator
739.1
O-ring
405
Strainer insert
739.2
O-ring
423
Vent valve
739.3
O-ring
424
739.4
O-ring
425
Two-way valve
739.5
O-ring
425.1
Circlip
739.6
O-ring
425.2
O-ring
893
Cap nut
425.3
Control plug
894.2
Hexagon nut
425.4
O-ring
901.1
Stud screw
425.5
Valve housing
901.2
Stud screw
425.6
Socket screw
914
Socket screw
472
Circlip
914.1
Socket screw
481
Heating element
914.2
Socket screw
Tab. 1 Spare part numbers
44
Catalog
Catalog
45
KRAL AG, Bildgasse 40, Industrie Nord, 6890 Lustenau, Austria,Tel.: +43 / 55 77 / 8 66 44 - 0
Fax: +43 / 55 77 / 8 84 33, www.kral.at, E-Mail: [email protected]

Catalog KRAL Pump Stations. DKC/DMC Series.

Transcription

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