12/16/2023 0 Comments Submerge pumpThe motors used in an ESP system are designed to operate under high temperatures and pressures. This is a cost-effective method of lifting large volumes of fluids from deep wells. Oil and Gas: Many submersible pumps in the oil and gas industry operate according to the Electric Submersible Pumping (ESP) principle. They have to contend with severe conditions because mine water is highly acidic and carries suspended solids. Mining: Mines use ESP submersible pumps that are designed differently from those used in the oil and gas industry. The oil and gas industry uses ESP submersible pumps extensively to lift oil to the surface from deep wells. ![]() Wells: Water wells and boreholes employ these pumps to lift water to the surface. They have to be specially designed to handle liquids with high solid content. An example is removing tailings ponds from mining operations or removing water from the basement of a building due to flooding.ĭredging: These pumps are used by port authorities to dredge a harbor. Sump pumping: Submersible pumps are often used to remove water that has accumulated in a low-lying area or pit where water can collect. These pumps often reduce sewage material to particles for easier handling and downstream treatment. Sewage treatment: This application requires submersible pumps, such as grinder pumps, that can transport solid material without obstruction from pump inlet to discharge. They are often used in pump and lift stations because they are compact and are less costly to install than other pumps. Wastewater: Submersible pumps are widely used in the grit and wastewater industry. These are some of the main applications for these pumps: They are made with robust iron castings and protected against corrosion with coated epoxy. Submersible pumps are generally very reliable and able to operate well in harsh conditions. In this way, any necessary repairs can be carried out to prolong the life of the pump. Wherever possible, submersible pumps should be inspected as often as possible. To counteract corrosion these pumps need to be made of corrosion-resistant material, which can make them more expensive than other types of pumps of the same capacity. Seals are especially prone to corrosion, which leads to leaks and damage to the motor. Submersible pumps are often used to handle liquids that are corrosive and abrasive. This makes it difficult to perform preventative maintenance and in many applications pumps are left to run until they break down and need to be replaced.Ĭorrosion: Prolonged exposure to a liquid of any sort will lead to corrosion. There are also some disadvantages to contend with:Īccessibility: Submersible pumps are often not easily accessible for routine inspection or maintenance, especially in deep well applications. Noise: Being submerged, these pumps are very quiet in most applications. This condition can increase efficiency due to less energy required to move fluid through the liquid path of the pump. This can be a problem with centrifugal pumps and other types of positive displacement pumps.Įfficiency: When a pump is submerged there is positive fluid pressure at the inlet of the pump. They are self-priming because they operate below the surface of the fluid being pumped.Ĭavitation: Because they are fully submerged, submersible pumps are not prone to cavitation. The submersible pump offers several major advantages over other types of pumps: ![]() They require special electricity cables and can be expensive to run.Īdvantages and Disadvantages of Submersible Pumps ![]() Many submersible pumps in the oil and gas industry operate according to the Electric Submersible Pumping (ESP) principle. A positive effect from the pump being submerged is that the motor is cooled by the liquid around it, preventing overheating. This is extremely efficient because the pump uses the head of liquid in which it is submerged to operate and no energy is spent in drawing the liquid into the pump. This condition can create greater efficiency due to less energy required to move the fluid through the liquid path of the pumpĪ submersible pump operates by pushing, as opposed to drawing, liquid during the pumping process. When a pump is submerged there is positive fluid pressure at the inlet of the pump. The water-tight enclosure around the motor is usually filled with oil to protect it from damage by preventing the entry of any liquid which may cause a short circuit. This type of pump has a hermetically sealed motor which is close-coupled to the pump body. As the name suggests, a submersible pump is designed to work with the entire assembly, consisting of pump and motor, fully submerged in the liquid or medium to be processed.
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