seawater pump
seawater pump
INDUSTRIA

Soluciones de bombas para aplicaciones marinas y agua de mar

Marine engineering pump duties may involve continuously aerated seawater, tidal level changes, suspended sand, warm cooling water, concentrated brine and restricted maintenance access. These conditions affect corrosion, cavitation, wear, sealing and service life.

Changyu Pump reviews seawater chemistry, chloride level, temperature, suspended solids, particle size, flow, total head, tide or tank level, NPSHa, installation position, operating hours and material requirements before recommending a pump series.

APPLICABLE FLUID

Marine & Seawater Pumping Applications

A marine or coastal project contains several different pump duties. Screened seawater, cooling circulation, construction water with sand, pits and sumps, concentrated brine and auxiliary transfer cannot be assigned the same pump or material by default.

Changyu Pump separates clean-water hydraulic duties from abrasive and solids-bearing duties, then checks alloy, seal, suction arrangement and maintenance access against the actual project conditions.

Clean Seawater Intake / Cooling & Circulation / Port & Marine Construction / Pits, Tanks & Sumps / Brine & Salt Slurry / Auxiliary Transfer

Clean Seawater Intake, Lifting and Transfer

Aplicación:

This duty covers screened seawater without settled sand, shells or large solids. The pump must provide stable flow while resisting chloride attack and maintaining adequate NPSH margin as tide or intake level changes.

CYH is the first Changyu series to evaluate for clean seawater, brackish water and compatible saltwater transfer. The final wet-end alloy and seal faces are selected from chloride level, temperature, oxygen, deposits and required service life.

Bombas Recomendadas

Main selection factors

  • Design, normal and minimum flow
  • Total dynamic head and tide range
  • NPSHa and suction geometry
  • Salinity, chloride and temperature
  • Screen condition and suspended solids
  • Wet-end alloy and seal faces

Bomba química centrífuga de acero inoxidable serie CYH

Bombas centrífugas químicas de acero inoxidable de alto rendimiento de la serie CYH. Caudal: 0,8–750 m³/h, temperatura de hasta 280 °C. Cumplen con la norma ISO 2858 y ofrecen soporte para OEM/ODM. ¡Consigue hoy mismo una solución confiable!

Cooling Water Circulation

Aplicación:

Marine engines, heat exchangers, coastal plants and offshore packages may require continuous cooling-water circulation. Warm seawater, oxygen, biofouling and deposits can reduce hydraulic performance and accelerate corrosion.

CYH is evaluated for screened seawater circulation when the hydraulic duty and material are compatible. CYE can be considered where an above-level pump must lift screened water by self-priming. Very large cooling-water flows require individual hydraulic review.

Bombas Recomendadas

Main selection factors

  • Continuous and standby flow
  • System resistance and equipment pressure drop
  • Minimum intake level and NPSHa
  • Seawater temperature and chlorination
  • Biofouling and cleaning method
  • Motor margin and duty cycle

Bomba química centrífuga de acero inoxidable serie CYH

Bombas centrífugas químicas de acero inoxidable de alto rendimiento de la serie CYH. Caudal: 0,8–750 m³/h, temperatura de hasta 280 °C. Cumplen con la norma ISO 2858 y ofrecen soporte para OEM/ODM. ¡Consigue hoy mismo una solución confiable!

Port, Dock and Marine Construction Water

Aplicación:

Dewatering, caisson work, dredging support and temporary marine construction can introduce sand, silt, rust scale or variable solids. A clean-water seawater pump should not be used by default when abrasive particles are normal.

PGY is evaluated for medium-to-large abrasive sand or silt transfer. PHH is suitable when abrasive service also needs higher head or a longer discharge line. CYE is considered for self-priming transfer from a pit or excavation after solids size and concentration are confirmed.

Bombas Recomendadas

Main selection factors

  • Concentración de sólidos y tamaño de partícula
  • Slurry density and settling tendency
  • Flow, head and pipeline length
  • Suction lift and priming requirement
  • Intermittent or continuous operation
  • Wear-part and flushing plan

Bombas horizontales para lodos de la serie PGY | Bomba de alta presión para servicio pesado

Bombas de lodo horizontales de la serie PGY de Changyupump. Servicio pesado, altura de elevación de hasta 100 m, doble carcasa, cojinetes lubricados con aceite. Piezas húmedas de aleación de alto cromo (BTMCr27/Cr28/Cr33). Caudal de 117-976 m³/h, descarga de 40-400 mm. Cuatro opciones de sello de eje. Ideal para minería, metalurgia, desulfuración de gases de combustión, lavado de carbón y lodos químicos. Datos técnicos y guía de selección.

Bomba centrífuga para lodos de la serie PHH para la industria minera y las centrales eléctricas

La bomba centrífuga para lodos de la serie PHH es una bomba de alta presión y alta resistencia diseñada para la minería, las centrales eléctricas, el dragado y el transporte de lodos abrasivos. Con piezas de desgaste de aleación de alto contenido en cromo, doble protección de la carcasa y caudales de hasta 1008 m³/h, ofrece un bombeo fiable de lodos a larga distancia con menores costos de mantenimiento y una vida útil prolongada.

Pits, Tanks, Bilges and Sumps

Aplicación:

Marine pits, ballast-related tanks, deck drains and sumps can contain seawater, rust, sediment, oily contamination or treatment chemicals. The pump arrangement depends on liquid level, access, solids and whether the pump is above or inside the tank.

CYE is evaluated for self-priming suction from below-level pits. FY suits compatible tank-mounted or immersed duties with flooded suction. BFQ or BFD diaphragm pumps can be considered for intermittent dirty liquid, variable flow or entrained air after diaphragm and valve compatibility are checked.

Bombas Recomendadas

Main selection factors

  • Liquid composition and oil content
  • Solids size and concentration
  • Minimum and maximum liquid level
  • Suction lift or immersion depth
  • Intermittent or continuous duty
  • Material and diaphragm compatibility

Concentrated Brine and Salt Slurry

Aplicación:

Desalination reject, saltworks and coastal process systems may handle concentrated brine, crystals or settled salt solids. Corrosion and abrasion must be evaluated together, and clean brine should be separated from salt slurry.

UHB is evaluated for lower-temperature corrosive brine with fine abrasive solids. PGY or PHH is considered for denser salt slurry, larger solids, higher flow or higher head. ZJP-Z hose pumps can suit lower-flow concentrated brine slurry, salt crystals or viscous mother liquor when hose compatibility is confirmed. Clean brine without solids requires a separate hydraulic and alloy review.

Bombas Recomendadas

Main selection factors

  • Salinity and chloride concentration
  • Crystal size and solids by weight
  • Specific gravity and viscosity
  • Temperatura de funcionamiento
  • Flow, head and pipe velocity
  • Material, seal and flushing arrangement

Bomba para ácido fosfórico serie UHB

La serie UHB de bombas para ácido fosfórico con revestimiento de UHMWPE está diseñada para manejar ácido fosfórico, ácidos corrosivos y lodos abrasivos con contenido de sólidos. Adecuada…

Marine Auxiliary Transfer and Cleaning

Aplicación:

Auxiliary duties include deck washing, temporary transfer, service water, tank cleaning and emergency drainage. The liquid may be clean seawater, dirty drainage or a chemical cleaning solution, so the pump should be selected from the actual medium rather than the word auxiliary.

CYH is evaluated for compatible screened seawater. CYE suits above-level self-priming transfer. FY is considered for compatible immersed installation, while BFQ or BFD may suit intermittent dirty or air-entrained liquids after material compatibility is confirmed.

Bombas Recomendadas

Main selection factors

  • Actual liquid composition
  • Required flow and discharge pressure
  • Self-priming or immersed installation
  • Solids, air and intermittent operation
  • Portable or fixed arrangement
  • Material, seal or diaphragm compatibility

How to Select a Pump for Marine Engineering Service

The word seawater is not enough to select a pump. Marine projects must be checked against the actual water chemistry, solids, hydraulic system, installation and maintenance constraints.

  • Seawater, brackish water, concentrated brine or salt slurry composition
  • Chloride, temperature, oxygen, chlorination and other chemicals
  • Suspended solids, particle size, shells, sand and settling tendency
  • Design, normal and minimum flow plus total dynamic head
  • Tide or tank level, suction lift, NPSHa and priming requirement
  • Continuous or intermittent duty, certification and maintenance access

Límite de selección: High-pressure RO feed, seawater injection, very large vertical intake, fire-fighting and class-critical marine service require separate engineering and certification review.

Quick Selection Table for Marine Engineering Duties

Marine or seawater dutyDesafío principalFirst pump to evaluateAlternativaDo not finalize before checking
Screened seawater intake or transferChlorides, cavitation, continuous dutyCYHProject-specific configuration for very large intakeFlow, head, NPSHa, salinity, temperature, material
Seawater cooling circulationContinuous operation, corrosion, foulingCYHNone without hydraulic reviewFull system curve, heat-exchanger loss, NPSH, operating range
Above-level port or dock transferSuction lift, changing level, suspended sandCYECYH for clean flooded suctionSuction lift, solids, priming time, material
Marine-construction water with abrasive sandErosion and settling solidsPGY o PHHCYE for moderate solids and lower headSolids wt%, maximum particle size, SG, pipeline length
Seawater pit or tankImmersion, variable liquid levelFYCYE for external self-priming installationImmersion depth, liquid level, solids, alloy
Concentrated brine without crystalsHigh chloride and material attackCYH after material reviewUHB below 90°C where chemistry is compatibleComplete ion analysis, temperature, oxygen, deposits
Brine or salt slurry with fine crystalsCorrosion, abrasion, scalingUHBPGY; ZJP-Z for low flowSalt species, solids, crystal size, pH, cleaning plan
Intermittent auxiliary or cleaning fluidVariable composition, entrained airBFQPara qué tanto alborotoComplete chemistry, diaphragm and valve compatibility
High-pressure RO, seawater injection or class-critical ship systemPressure containment, certification, safetyIndividual engineering review onlyProject-specific pumpFull specification, applicable code and certification

Not sure which pump to choose? Send Bomba Changyu the medium composition, salinity, temperature, solids, particle size, flow, total head, NPSHa, tide or tank level, installation and operating hours.

Why Choose Changyu Pump for Marine Engineering

Duty-Based Selection

We separate clean seawater, abrasive construction water, dirty sumps and concentrated salt slurry, then match the hydraulic design and pump construction to each duty.

Material and Seal Review

Wet-end alloy, shaft seal, seal faces and elastomers are checked against chloride, temperature, oxygen, solids, treatment chemicals and required service life.

Hydraulic Verification

Flow, total dynamic head, NPSHa, tide range, suction lift, pipe losses and motor margin are reviewed before a pump model is confirmed.

Clear Engineering Boundaries

We identify when a standard Changyu series is applicable and when marine class, fire service, high pressure or very large intake conditions require project-specific engineering and certification.

Contáctenos

Soluciones de bombeo flexibles, eficientes y totalmente personalizadas.

¿Busca la solución de bombeo perfecta para sus necesidades específicas? Nuestro equipo de expertos ofrece soluciones personalizadas de bombas centrífugas adaptadas a sus fluidos, condiciones de funcionamiento y requisitos del proyecto. ¡Solicite hoy mismo una consulta personalizada y un presupuesto!

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Preguntas frecuentes

CYH normalmente es la primera serie a evaluar para el trasvase de agua de mar limpia filtrada, agua salobre y agua salada compatible. El modelo hidráulico final, la aleación del extremo húmedo, las caras de sellado y los elastómeros aún deben seleccionarse en función del caudal real, la altura, la NPSHa, el nivel de cloruro, la temperatura y la vida útil requerida.

Para salmuera corrosiva a baja temperatura que contiene sólidos abrasivos finos o lodo salino, la Serie UHB es una bomba a evaluar. La lechada salina más densa, los sólidos más grandes, el mayor caudal o la mayor altura pueden requerir una bomba para lodos PGY o PHH. La selección final depende de la química completa de la salmuera, la concentración de cloruro, la temperatura, el contenido de sólidos, el tamaño de partícula, el caudal, la altura y la compatibilidad de materiales.

El acero inoxidable 316L no es automáticamente adecuado para todo servicio con agua de mar. La selección del material debe considerar el nivel de cloruros, la temperatura, el oxígeno, la cloración, los depósitos, las grietas, las condiciones de flujo y la vida útil requerida. Según las condiciones, puede requerirse dúplex, superdúplex u otro material compatible para el extremo húmedo.

A self-priming pump should be considered when the pump is installed above the liquid level and must lift liquid from a dock, pit, tank or excavation. The CYE Series can be evaluated after the suction lift, minimum liquid level, priming time, solids size and concentration, flow, head and material compatibility are confirmed.

UHB is evaluated for lower-temperature corrosive brine with fine abrasive solids. PGY or PHH is considered for denser salt slurry, larger solids, higher flow or higher head. ZJP-Z hose pumps can suit lower-flow concentrated brine slurry, salt crystals or viscous mother liquor when hose compatibility is confirmed. Clean brine without solids requires a separate hydraulic and alloy review.

High-pressure RO feed, seawater injection, very large vertical intake, fire-fighting and class-critical marine duties are not standard series selections on this page. They require an individual engineering and certification review against the full project specification, applicable code, pressure requirements and marine-class requirements.

Provide the pumped medium and complete composition, salinity or chloride level, temperature, solids concentration, maximum particle size, specific gravity and viscosity; design, normal and minimum flow; total dynamic head; NPSHa, tide or tank levels and suction arrangement; installation position; operating hours and duty cycle; required materials; and any applicable certification or marine-class requirements.

PRODUCTO

Recommended Marine Engineering Pumps

These Changyu Pump series cover clean seawater, self-priming transfer, immersed installation, abrasive construction water, dirty sumps and concentrated salt slurry. Final selection depends on water chemistry, solids, flow, head, suction conditions, installation, duty cycle and certification.