CSL Series Marine Vertical Double-Suction Middle-Open Centrifugal Pump

Our History

protect the quality of marine equipment in all aspects

 

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Marine Couplings	Marine Thrusters	Harmonic Reducer

 

OurProduct

OurProductsincludesthefollowing:

MarineTransmission

MarineDieselEngine

Marine/ShipPropellers

Marine/ShipGearBox

MarineFire-FightingPumps

HighPrecisionReducer

BoatEngine&TransmissionRepairs

ShipPowerSystemModifications

SolutionsforMarinePropulsionSystems

TransmissionDeviceforAgriculturalMachinery

TransferCase(ForAutomobiles)

TransferCaseforIndustrialTransmission

 

ProductApplication

Productuse:

CargoShip,Containerships,BulkCarriers,TankerVessels,ReeferVessels,Offshore

Vessels,PassengerVessels,NavalShips,,FishingVessels,ResearchVessels

Grain-harvestingmachinery,corn-harvestingmachinery,balers,knotters,film-

wrappingmachines,paddy-fieldsprayers,orchardsprayers,etc.Trucks,off-road

vehicles,lorries,constructionvehicles.Engineeringandindustrialfields.

Relevantqualifications

 

ProductionEquipment

Boxprocessing:

Patentedappearance,beautifulandcompact;

Precisioncastingofresinsandmetalmoldtoensurestrengthandnoleakage;

One-timeclampingandprocessinginthemachiningcenter,usingimportedCNC

machiningcentertoensuremachiningaccuracy;

Double-processprofessionalcleaningandphosphatingequipment,cleaning(removing

ironchips),andrust(corrosion)prevention.

Gearproductionline:

Usecleaningandphosphatinglineforcleaningandcorrosionprotection

Heattreatmentprocessing:

bendingstrengthoftoothrootbymorethan20%

100%onlineproductoperationinspection

Test machine ensure high quality goods



OverallSolutionforShipPropulsionSystem

Characteristics of the protective coating formed by this technology

1. Excellent adhesion between the coating and the metal substrate.
2. Wide applicable temperature range.
3. Good cathodic disbondment resistance, free of the "cathode screening" effect.
4. Stable electrical insulation to reduce cathodic protection current.
5. Resistant to chemical media corrosion, with good resistance to Cl
6. Similar thermal expansion coefficients of the coating and the steel structure, with good resistance to thermal changes.
7. The coating is easy to repair.

Main performance indices of this technology

1. Peak performance of the KsF series coatings: bond strength 100MPa, impact strength > 23J, anti - penetration property at 60ºC (within one year) with the coating resistance remaining constant.
2. Long - distance pipelines can be coated both inside and outside simultaneously, with performance meeting the national anti - corrosion coating standards for fusion - bonded epoxy powder coatings or SY/T0315 - 97 Technical Standard of Fusion Bond Epoxy Coating for Steel Pipeline.
3. Bends of long - distance pipelines can be coated both inside and outside simultaneously, with performance meeting the national anti - corrosion coating standards for fusion - bonded epoxy powder coatings or Q/Fs.J02.15 - 1996 enterprise standard.
4. The drag - reduction coating performance for long - distance pipelines meets the US standard APIRP5L2.
5. The field joint coating performance for long - distance pipelines meets the national anti - corrosion coating standards for fusion - bonded epoxy powder coatings.

Application fields of this technology

1. Products for severe corrosion protection, such as high - efficiency corrosion - resistant pumps, wear - resistant pumps, high - efficiency corrosion - resistant fans, corrosion - resistant valves, corrosion - resistant bellows compensators, and seawater filters.
2. Severe corrosion protection for long - distance pipelines of oil, gas, and water.
3. Severe corrosion protection for metal process pipelines of acids, alkalis, and salts.
4. Severe corrosion protection for equipment and structural parts in the chemical engineering and energy industries.
5. Severe corrosion protection for materials in ocean engineering.

Application examples of this technology

1. Qinshan Nuclear Power Station
   • Primary loop seawater pump: 20SHF - 19 seawater pump, flow rate 1400m³/h, head 23m, speed 978r/min, 4 sets.
   • Seawater booster pump: 14SH - 90 - 19 seawater pump, speed 1450r/min, 3 sets.
   • Underground seawater pipeline: 4 φ1400 pipelines, about 30m.
   • Bellows expansion joint: 8 units, φ1400×1.2m.
   • Seawater cooling pipe in the steam turbine building: seawater booster pump outlet pipe φ600×12m and tees, tee joints of φ325 - φ525mm, totally 260m.
2. Shenyang Automation Research Institute, Chinese Academy of Sciences
   Key parts of the underwater robot developed by the institute, such as underwater motors, underwater manipulator oil cylinders, and underwater tools, adopted the special KsF coating technology and were successfully used on Nanhai drilling platform Exploration 3 of China West Petroleum Company.

Effect of KsF spray - painting anticorrosion technology on marine pumps

1. No mechanical seal leakage, abnormal vibration, or noise occurred during the operation of the two pumps.
2. The impeller rings and seal rings of the two pumps had slight normal wear.
3. The rubbing surfaces of the mechanical seals of the two pumps had normal wear.
4. The coating surface of the painted pump's body, cover, impeller, and gland was smooth and intact, with no seawater corrosion, coating wear, or peeling. In contrast, the surface of the unpainted pump's body, cover, and impeller had corrosion, which was significantly aggravated compared to the first check.

 

Centrifugal Pump Operation Manual: 

1. Fundamental Operating Principle

Centrifugal pumps convert rotational energy from an impeller into kinetic energy, generating centrifugal force to move fluids. Proper selection and operation depend on understanding this hydrodynamic principle and its relationship to pump performance curves.

2. Pump Selection Criteria

Key parameters for centrifugal pump specification include:

• Flow Rate (Q) - Required volumetric capacity (m³/h or GPM)

• Total Dynamic Head (TDH) - Net pressure differential accounting for static lift, friction losses, and system resistance

• Fluid Properties - Viscosity, specific gravity, temperature, and chemical compatibility with wetted materials

• Net Positive Suction Head (NPSH) - Critical to prevent cavitation (NPSH> NPSH+ safety margin)

3. Pre-Installation Requirements

• Foundation - Rigid mounting base with vibration-damping provisions (grouted sole plates or isolation pads)

• Alignment - Laser-aligned shaft coupling within 0.05mm tolerance (per ANSI/HI standards)

• Piping -

  • Suction line: Short, straight runs with eccentric reducers (flat-top orientation)

  • Discharge: Install check valve and isolation gate valve

  • Support independent piping loads to prevent nozzle strain

4. Operational Monitoring Protocols

5. Preventive Maintenance Program

• Daily:

  • Inspect mechanical seal/gland packing for leaks

  • Monitor lube oil levels (oil-lubricated bearings)

  • Log pump performance metrics

• Monthly:

  • Grease bearings (quantity per OEM specs)

  • Flush seal chambers on abrasive services

  • Conduct motor megohm testing

• Annual:

  • Replace wear rings if clearance exceeds 0.5mm

  • Perform dynamic balancing (ISO 1940 G6.3 standard)

  • Hydrotest casing at 1.5x design pressure

6. Advanced Troubleshooting Guide