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Submersible electric pumps can be divided into the following seven categories according to their purpose
Release Time:
Aug 09,2024
According to the purpose of submersible electric pumps, submersible electric pumps can be divided into the following seven categories.
(1) A submersible electric pump for a well is composed of a submersible three-phase or single-phase (asynchronous) motor for a well and a submersible pump for a well. It works in underground water and is used to suck groundwater or transport water to a high or long distance. Submersible electric pump.The overall structure of submersible electric pumps for wells is very different from ordinary land-use asynchronous motors.Since the outer diameter of the submersible electric pump for wells is strictly limited by the diameter of the well it is installed in, both the motor and the pump are very slender.The increase in the power of the motor of the same base number used in the same well diameter or the increase in the head of the submersible electric pump at a certain flow rate can only be achieved by increasing the height of the submersible motor and the number of stages of the submersible pump.When the power of the submersible motor for the well is very large and the head of the submersible pump is very high, the submersible electric pump for the well is thin and long.In accordance with GB/T 2816 "Submersible Pump for Wells" and GB/T 2818 "Submersible asynchronous motor for Wells" standards, the power of submersible electric pumps for wells is O.37~220kW, flow rate 2~500ni3/h, head 9~598m, synchronous speed of 1500r/min or 3000r/min.The products currently produced are mainly single-phase or three-phase, water-filled, oil-filled and shielded submersible electric pumps for wells with upper pump-type structures, and there are also a small number of single-phase dry-type submersible electric pumps for wells with upper pump-type structures.
(2) Clear water submersible electric pump is suitable for shallow water drainage and irrigation, and a submersible electric pump used to transport clear water.Its power is 0. 12~15 kW or greater, the flow rate is 1.5~250m3/h, and the head is 3~130m.The main products currently produced are QY-type oil-filled three-phase upper pump submersible electric pump, Q-type dry three-phase upper pump submersible electric pump, os-type water-filled three-phase upper pump submersible electric pump and ox-type dry three-phase lower pump submersible electric pump, QDX-type dry single-phase lower pump submersible electric pump and QYDX-type oil-filled single-phase lower pump submersible electric pump and other structures of submersible electric pumps.
(3) Sewage and dirt type submersible electric pumps are suitable for single-phase or three-phase submersible electric pumps for conveying sewage containing dirt, solid particles, etc.Its power is 0. 25~1400kW, the flow rate is 3~43350m3/h.At present, there are ow-type and WQ-type submersible electric pumps for sewage and sewage. They are mainly single-phase or three-phase down-pump type dry-type submersible electric pumps, and submersible electric pumps with oil-filled or water-filled structures can also be used.
(4) Mine explosion-proof submersible electric pumps are suitable for conveying submersible electric pumps for sewage containing solid particles such as dirt, pulverized coal, and sediment.Its structure is mainly dry or water-filled, explosion-proof, and can be used in environments containing explosive gases underground in coal mines.Its power is 0. 55~250kW, flow rate 3~1000n13/h, head 5~200m or higher.The submersible sewage electric pumps for mining mainly use a lower pump structure, and there are also products with an oil-filled upper pump structure.
(5) Axial flow submersible electric pumps are suitable for farmland water conservancy drainage and irrigation, urban water supply, and sewer drainage, especially for flood control and flood resistance of pumping stations along rivers, rivers, and lakes with high water level fluctuations. It is a replacement product of the traditional axial flow pump and an electric motor unit.Its structure is mainly divided into two types: bulb type and cross-flow type.The dry submersible motor of the bulb structure is placed above the axial submersible pump; in the cross-flow structure, the axial submersible pump and the water-filled submersible motor are combined into one. The power of the axial submersible electric pump is 4~280kW, the flow rate is 200~11000m3h, and the head is 1.6~10. 35m.
(6) High-pressure submersible electric pumps for mines and wells are mainly suitable for mine drainage and well pumping, and can also be used for urban water supply or river water intake. The outer diameter is limited by the well diameter and is generally relatively slender. Its structure is mainly water-filled upper pump type, vertical installation and use.The power is 280-2400kW or greater, and the voltage is generally 6000V.
(7) Large-scale submersible electric pumps are mainly suitable for water intake from rivers and lakes or urban water supply, water supply from pumping stations, flood control and drainage. The structure is mainly a water-filled upper pump type, the outer diameter and size are not limited, and it is installed and used vertically.It can also be made into a horizontal structure according to the requirements of use.The voltage is 6000V or 380V, and the power is more than a few hundred kilowatts.
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