Brief about submersible pumps

A submersible pump is a pump that is able to be placed underwater and still carry out its intended purpose. Some pumps may be designed to work while being fully submerged, whereas others may be submerged or placed in a dry area. It is important to understand what type of pump you are dealing with in order that no damage is incurred when it is being used.

Submersible pump types include sump pumps and submersible sewage pump. These are the types with which most residential users will be most familiar. However, the submersible pump can be used in a number of other applications as well such as well pumps, fountain pumps and borehole pumps. Besides, submersible well pump can be applied in factories, commercial seriously polluted wastewater; the city sewage treatment plant, hospital, hotel drainage system; residential sewage drainage station; the civil air defense system drainage station, water plant water supply device; municipal engineering, construction; exploration, mining, power plant matching machine; rural firedamp pool, agricultural irrigation, river dredging.
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The advantages of a submersible pump are numerous. First, it has the advantage of being self-primed because the substance it is pumping, usually water, is right there at the pump itself. Further, the submersible pump may actually have to do less work than a standard pump simply because it is closer to the liquid being pumped. Do you know its working conditions? It can be described as following parts: water temperature up to 35°C; PH: 6.5 to 8.5; density of liquid: 1.3g/cm3; power supply: single phase 220V±10%, 50Hz; three phase 380V±10%, 50Hz; power: 0.75~90Kw; insulation class: B; protection class: IP 68; capacity: up to 1300m3/h; head: up to 75m. Submersible pumps are used in oil production to provide a relatively efficient form of "artificial lift", able to operate across a broad range of flow rates and depths. By decreasing the pressure at the bottom of the well (by lowering bottomhole flowing pressure, or increasing drawdown), significantly more oil can be produced from the well when compared with natural production. The pumps are typically electrically powered and referred to as Electrical Submersible Pumps (ESP).

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