Submersible Pump Prices in Nepal

Note: The prices may not be up-to-date, to get the current pricing, please contact our suppliers directly.

 

Submersible Pump Suppliers in Nepal

 

1. Deepshree Construction and Suppliers Pvt Ltd

Business Type: Wholesaler/Dealer/Distributor

Location: Teku, Kathmandu

Verification Status: Verified Supplier

About Deepshree Construction and Suppliers Pvt Ltd:

Deepshree Construction and Suppliers Pvt Ltd is a reputable wholesaler, dealer, and distributor based in Teku, Kathmandu. With a commitment to quality and reliability, we specialize in supplying a wide range of submersible pumps to meet the diverse needs of our customers across Nepal.

 

Exploring the Mechanics, & Applications of Submersible Pumps

A submersible pump is a type of centrifugal pump designed to operate while fully submerged in the fluid it is pumping. Its main components include:

Motor: typically a sealed electric motor that is waterproof and designed to operate underwater.

Impeller: The rotating component responsible for generating centrifugal force, which imparts kinetic energy to the fluid, increasing its velocity and pressure.

Casing: A protective housing that encloses the motor and impeller assembly, ensuring efficient fluid flow and preventing water ingress.

 

Operating Principle:

Submersible pumps operate on the principle of centrifugal force. When the motor rotates the impeller, fluid enters the pump through the intake port and is accelerated by the rotating impeller. As the fluid moves radially outward, centrifugal force increases its velocity and pressure, enabling it to be discharged through the pump's outlet port.

 

Materials and Construction:

Submersible pumps are typically constructed from materials such as stainless steel, cast iron, or thermoplastics. Stainless steel pumps offer excellent corrosion resistance, making them suitable for applications involving aggressive fluids. Cast iron pumps are durable and well-suited for heavy-duty applications, while thermoplastic pumps are lightweight and resistant to chemical corrosion.

 

Types of submersible pumps:

Submersible pumps are classified based on various factors, including:

Pump Design: Submersible pumps may be designed as radial flow pumps, axial flow pumps, or mixed flow pumps, depending on the direction of fluid flow relative to the pump shaft.

Motor Type: Submersible pumps may feature different types of motors, such as induction motors, permanent magnet motors, or oil-filled motors, each offering specific advantages in terms of efficiency and performance.

Intended Application: Submersible pumps are available in various configurations tailored to specific applications, such as groundwater extraction, wastewater management, aquaculture, or mining.

 

Applications of Submersible Pumps:

Groundwater Extraction:

Submersible pumps are extensively used for extracting groundwater from wells and boreholes for various purposes, including:

Irrigation: providing water for agricultural irrigation systems to support crop growth and maximise yields.

Drinking Water Supply: Pumping clean groundwater for municipal water supply systems to meet the drinking water needs of communities.

Industrial Use: Supplying water for industrial processes such as manufacturing, cooling, and processing.

 

Wastewater Management:

Submersible pumps play a crucial role in managing wastewater and sewage by:

Pumping sewage from residential, commercial, and industrial buildings to wastewater treatment plants for processing and treatment.

Facilitating stormwater drainage and flood control by removing excess water from streets, basements, and low-lying areas during heavy rainfall events.

Handling corrosive and abrasive fluids commonly found in sewage systems, thanks to their robust construction and corrosion-resistant materials.

 

Aquaculture and Agriculture:

Submersible pumps are employed in aquaculture and agriculture for:

Oxygenation: Circulating and aerating water in aquaculture ponds and fish tanks to maintain optimal dissolved oxygen levels for fish and aquatic organisms.

Irrigation: Delivering water for agricultural irrigation systems to ensure proper hydration of crops and promote healthy growth and development.

 

Oil and Gas Industry:

Crude Oil Production: Lifting crude oil from oil wells to the surface for processing and refining, enhancing production rates,, and maximizing oil recovery.

Water Injection: Injecting water into oil reservoirs to maintain reservoir pressure and improve oil recovery in secondary and tertiary oil production methods.

 

Mining and Construction:

Submersible pumps are essential for dewatering applications in mining and construction by:

Removing groundwater from mines, tunnels, and construction sites to prevent flooding and maintain dry working conditions.

Handling abrasive slurry and mine water containing solids, sand, and sediment, thanks to their robust construction and ability to handle high concentrations of solids.

 

Advantages of Submersible Pumps:

 

Energy Efficiency:

Submersible pumps are highly energy-efficient due to several factors:

Elimination of Priming: Since submersible pumps are submerged in the fluid they are pumping, there is no need for priming, reducing energy consumption and improving pump efficiency.

Reduced Friction Losses: The short distance between the pump and the fluid source minimizes friction losses, resulting in higher overall efficiency.

 

Space Saving:

Submersible pumps offer space-saving advantages by:

Eliminating the need for external piping and housing typically required by surface pumps, thereby reducing the installation footprint and construction costs.

Allowing for compact installation within wells, boreholes, or fluid reservoirs, making them ideal for applications with limited space availability.

 

Quiet Operation:

Submersible pumps operate quietly due to their submerged placement.

The underwater operation of submersible pumps minimizes noise transmission, making them suitable for residential, commercial, and noise-sensitive environments.

Quiet operation enhances user comfort and reduces noise pollution compared to surface pumps, which may produce more audible noise during operation.

 

Reliability and Longevity:

Submersible pumps are known for their reliability and longevity thanks to:

Sealed Construction: Submersible pumps are hermetically sealed, protecting internal components from environmental factors such as moisture, dust, and debris, which can extend the pump's lifespan.

Efficient Heat Dissipation: Submersible pumps dissipate heat more effectively due to direct contact with the surrounding fluid, preventing overheating and prolonging motor life.

 

Considerations for Submersible Pump Selection:

Pump capacity and head:

Selecting the appropriate pump capacity and head is critical for optimal performance.

Pump Capacity: Determined by factors such as flow rate requirements, fluid properties, and system pressure, ensuring the pump can deliver the desired volume of fluid.

Pump Head: Determined by factors such as vertical lift, friction losses, and system pressure requirements, ensuring the pump can overcome resistance and maintain flow.

 

Pump Efficiency and Performance Curves:

Understanding pump efficiency and performance curves aids in selecting the right pump for the application.

Performance Curves: Graphical representations of a pump's performance under various operating conditions, including flow rate, head, and efficiency, help users choose the most suitable pump for their specific requirements.

Efficiency: The ratio of pump output power to input power indicates how effectively the pump converts electrical energy into hydraulic energy, with higher-efficiency pumps offering lower operating costs.

 

Submersible Cable Selection:

Choosing the appropriate submersible cable is essential for safe and reliable pump operation.

Voltage Rating: Selecting cables with the appropriate voltage rating to match the pump motor's voltage requirements ensures compatibility and prevents electrical hazards.

Insulation Material: Choosing cables with durable insulation materials such as PVC, EPDM, or polyethylene to withstand submersion and resist abrasion, chemicals, and environmental factors.

Length Requirements: determining the required cable length based on installation depth, distance from the power source, and routing considerations to ensure proper cable sizing and prevent voltage drop.

 

Maintenance Requirements:

Regular maintenance is essential for ensuring the reliable operation and longevity of submersible pumps.

Inspection: conducting visual inspections of the pump, motor, and cable for signs of damage, wear, or corrosion, and addressing any issues promptly to prevent further damage.

Cleaning: removing debris, sediment, and fouling from the pump intake, impeller, and casing to prevent performance degradation and maintain optimal hydraulic efficiency.

Lubrication: Lubricating bearings, seals, and other moving parts as recommended by the manufacturer to reduce friction, prevent wear, and extend component life.

Motor Winding Checks: Periodically inspecting the motor windings for signs of overheating, insulation degradation, or moisture ingress and performing electrical tests to ensure motor integrity and reliability.

 

Installation and Operation Guidelines:

 

Site Preparation:

Proper site preparation is crucial for ensuring successful pump installation and operation.

Borehole Drilling: Drilling and casing the borehole or well to the required depth and diameter, ensuring stable formation and preventing collapse during pump installation.

Casing Installation: Installing the pump casing and securing it in place to prevent movement or misalignment, ensuring efficient fluid intake and discharge.

Support Structures: Providing adequate support and bracing for the pump and motor assembly to prevent sagging, vibration, or damage during operation.

 

Pump Installation:

Following proper installation procedures is essential for ensuring reliable pump performance.

Alignment: ensuring proper alignment of the pump motor and impeller assembly with the casing and discharge piping to minimize vibration and maximize efficiency.

Cable Connection: making secure and watertight electrical connections between the pump motor and power supply cable, using waterproof connectors,, and sealing materials to prevent water ingress.

Sealing: ensuring a watertight seal between the pump and casing, discharge piping, and cable entry point to prevent water leakage and maintain pump integrity.

 

Start-Up Procedures:

Following the correct start-up procedures is crucial for avoiding damage to the pump and motor.

Priming (if applicable): If the pump requires priming to remove air from the system, follow the manufacturer's guidelines for priming procedures to ensure proper pump operation and prevent cavitation.

Motor Testing: Testing the pump motor under no-load conditions to verify proper rotation, voltage, and current draw, ensuring motor integrity and electrical safety.

Monitoring: monitoring pump performance during initial operation, including flow rate, pressure, and temperature, and addressing any anomalies or issues promptly to prevent damage or downtime.

 

Safety Precautions:

Adhering to safety protocols is essential for preventing accidents and ensuring operator safety.

Electrical Safety: Follow proper electrical safety procedures when working with submersible pumps, including using ground fault circuit interrupters (GFCIs), waterproof connectors, and insulated tools to prevent electric shock hazards.

Lifting Techniques: Using appropriate lifting equipment and techniques to safely handle heavy pump and motor assemblies during installation and maintenance, preventing injuries and equipment damage.

Equipment Grounding: Ensuring proper grounding of the pump, motor, and electrical components to minimise the risk of electrical faults, static discharge, and equipment damage.

 

Conclusion:

Submersible pumps are versatile and reliable devices widely used in various industries and applications, ranging from groundwater extraction and wastewater management to aquaculture, agriculture, and dewatering. By understanding the mechanics, applications, advantages, considerations, and installation guidelines associated with submersible pumps, users can make informed decisions when selecting, installing, and operating these essential fluid handling solutions, ensuring optimal performance, efficiency, and longevity.