58203A SLP-18/280 LNG Submersible Pump
Tag No.：58203A
Model：SLP-18/280
Name：LNG Submersible Pump
1. Technical specifications
|
SN |
Name |
Specifications |
Note |
|
1 |
Model |
SLP-18/280 |
|
|
2 |
Type |
Vertical, single suction, two-stage, direct connected submerged centrifugal pump |
|
|
3 |
Medium |
LNG/LN2 |
|
|
4 |
Medium density |
425kg/m³ |
|
|
5 |
Medium temperature |
≤-135℃ |
|
|
6 |
Design temperature |
-196ºC |
|
|
7 |
Design flow |
20 m³/h(liquid) |
|
|
8 |
Design head |
300m |
|
|
9 |
Design speed |
6000r/min |
|
|
10 |
Allowable speed |
≤6000r/min |
The lower the speed, the better |
|
11 |
Minimum flow |
6.5m³/h(liquid) |
|
|
12 |
Cavitation allowance NPSHr |
1.5m |
Design condition |
|
13 |
Inlet pressure (gauge pressure) |
0.02～1.2MPa |
|
|
14 |
Variable frequency motor power/number of poles/speed |
15KW/2P/6000r/min |
|
|
15 |
Efficiency of variable frequency motor |
0.86 |
|
|
16 |
Power factor of variable frequency motor |
0.91 |
|
|
17 |
Insulation grade of variable frequency motor |
F |
|
|
18 |
Frequency conversion range |
0-100hz (constant torque) 100-105hz (constant power) |
|
|
19 |
Flow range |
5-25 m³/ h (liquid) |
|
|
20 |
Head range |
120-300m |
|
|
21 |
Net weight |
≈ 88Kg |
|
|
22 |
Noise |
≤75dB |
Measured at 1m around |
2. Design standard
|
SN |
Standard Code |
Standard Name |
|
1 |
GB/T 1176-2013 |
Cast copper and copper alloys |
|
2 |
GB/T 1220-2007 |
Stainless steel rod |
|
3 |
API610-2004 |
Centrifugal pumps for the oil, heavy chemical and gas industries |
|
4 |
GB/T5656-2008 |
Technical Conditions of Centrifugal Pumps (Ⅱ) |
|
5 |
GB/T 22724 |
LNG equipment and installation onshore design |
|
6 |
GB/T 19204 |
General characteristics of LNG |
|
7 |
JB/T6879-2008 |
Dimensional tolerance of centrifugal pump casting over-current part |
|
8 |
ISO1940-2003 |
Mechanical Vibration Balance Quality Requirements for Rigid Rotors |
|
9 |
GB/T 3216-2005 |
Acceptance test of hydraulic performance of rotary power pump |
|
10 |
JB/T8098-1999 |
Pump noise measurement and evaluation method |
|
11 |
GB/T13007-2011 |
centrifugal pump efficiency |
|
12 |
CCS |
Specification for construction and equipment of ships carrying liquefied gases in bulk |
|
13 |
CCS |
Specification for natural gas fueled ships |
|
14 |
GB 755-2008 |
Rotating Electric Machine Ratings and Performance |
|
15 |
GB 1032-1990 |
Three-phase asynchronous motor test method |
|
16 |
GB 1971-1980 |
Motor wire end marking and direction of rotation |
|
17 |
GB 14711-1992 |
General requirements for the safety of small and medium rotating electrical machines |
|
18 |
GB 191-1990 |
Packaging, storage and transportation icons |
|
19 |
ASTM B62-09 |
Standard specification for Composition Bronze or Ounce Metal Castings |
|
20 |
ASTM A351/A351: 2000 |
Austenitic, austenitic-ferritic (duplex) steel castings for pressure components |
|
21 |
ISO1940:2003 |
Mechanical vibration-Balance quality requirements for rotor in a constant (rigid) state |
Product introduction:
Purpose: to transfer LNG from storage tank, pressurize and fill the vehicle with LNG.
Transmission medium: LNG.
Structure: vertical, single suction, two-stage, direct connected submersible centrifugal pump. The pump is coaxial with the motor. The axial force is balanced by adjusting the impeller nozzle ring, and the radial force is balanced by multi-channel guide vane design. The residual axial force and radial force are borne by low-temperature bearing. When the operation and medium temperature change, the rotor can float up and down freely, and the deformation of the disc spring produces different supporting forces to support the rotor.
Bearing: imported customized low-temperature bearing, which balances part of the axial force through the balance hole, and the remaining axial force is borne by the motor bearing. The bearing adopts medium self-lubrication.
The submersible pump is connected with the upper cover of the pump pool through four M10 bolts, and the low-temperature outgoing cable is connected through a special cable connector.
Driving mode/transmission direction: motor driven, counterclockwise rotation from the driving end (judge whether the motor direction is correct through the outlet pressure during the initial operation).
Foundation form: pump sump base, 4pc of φ24 holes.
The performance curve is gentle.
The critical speed of the pump shall not be lower than 125% of the rated speed.
The trouble-free operation time of the pump set is 10000 hours.
The installation and interface dimensions of the same model of cryogenic centrifugal pump shall be completely consistent and interchangeable.
All rotating parts shall be assembled together for dynamic balance test. According to ISO1940:2003 standard, the balance accuracy reaches G2 Level 5.
For more information, please contact us by email sales@wintekgroup.com .
Key Words: LNG Submerged Pump, Centrifugal Liquid Pump, LNG Filling Pump, LNG Filling Station Pump
