The submersible electric pump is a high-tech product of mechatronics. In recent years, as the submersible electric pump has made great progress in sealing, insulation, cooling and monitoring technologies, and also successfully realized the automatic coupling of the water pump and the outlet pipe, the promotion and application of large-caliber submersible electric pumps has been significantly accelerated. As the submersible electric pumping station saves engineering investment, can be quickly installed and overhauled, operating conditions are greatly improved, and the reliability and service life of the equipment are significantly improved. At present, China not only produces and installs axial flow pumps and mixed flow pumps with large diameters below 900mm, but can also produce large submersible pumps with diameters of 1.4m and 1.6m, which has laid a good foundation for the technical promotion of submersible pumping stations. The submersible electric pump is not afraid of flooding, and it has the advantages of quick dismantling and installation, and it can cope with various emergencies such as the surge of water level and the flooding of the pump house. The advent of large-scale submersible electric pumps makes the pump station structure and installation Revolutionary changes have taken place in methods and operating environment. Compared with conventional pumping stations, submersible electric pumping stations have more obvious advantages in low-lying and flood-prone areas. At the same time, there are a variety of pump types such as submersible sewage pumps and sand pumps, which can clear the drainage channel silt in time.
1. The pumping station is not afraid of flooding
For low-lying areas prone to waterlogging, drainage and irrigation pumping stations are often flooded when dike breaches or heavy rains exceeding design standards fall. Once the mechanical and electrical equipment of the pumping station is soaked in water, the repair work such as cleaning and baking will be heavy, which will delay the drainage time and increase the disaster loss. Therefore, the flood and moisture prevention of conventional pumping stations is also one of the most important issues. However, the submersible electric pump uses a submersible motor, and the water pump unit can be operated underwater. Therefore, even if the pumping station is submerged in water, as long as the motor is not overloaded, the submersible electric pump can work in the stable area and can be put into operation at any time.
2. Quick disassembly and assembly of the unit
In the past, the submersible electric pump and the outlet pipe were connected by bolts, which were mainly used for deep well pumping and small construction drainage. However, modern submersible electric pumps and outlet pipes have realized automatic coupling. When the outlet pipes are fixed, the pump unit can be quickly installed and disassembled without bolts, which greatly speeds up the installation and maintenance of the unit.
The main installation types of current large-caliber submersible electric pumps are wellbore type and guide rail type.
The main installation method of axial flow and guide vane mixed flow submersible pumps is the wellbore type. The wellbore type has suspension type, elbow type, floor type, open type and so on.
In addition, for different types of inlet runners. A wellbore submersible electric pump can also be used. It is a wellbore submersible electric pump device with a bell-shaped inlet channel.
3. Pumping station project investment province
The investment in the pumping station project includes civil construction investment and equipment investment. After adopting the submersible electric pump, the investment in civil construction and equipment can be reduced.
(1) Civil construction investment. Due to the following reasons, the civil construction investment of submersible electric pumping stations can be reduced by 30%-50% compared with conventional pumping stations.
①The submersible electric pump unit can be operated underwater, not afraid of wind and rain, and the upper structure of the pump room can be omitted;
②The submersible electric pumps are coaxial, with small axial dimensions, and the lifting height of the pump is small. Even if the superstructure needs to be built, its height is lower than that of conventional pumping stations;
③For pumping stations that need backup units, only the backup submersible electric pump units are needed, and there is no need to increase the location of the backup units, so that the length of the pump room can be reduced;
④The submersible electric pumping station does not require auxiliary equipment such as water supply pumps, drain pumps, vacuum pumps, fans, etc. The pump room is small in size and the hydraulic structure is simple.
(2) Equipment investment. Due to the high requirements for sealing, insulation, and cooling of submersible electric pumps, there are also many monitoring equipment in the unit, so the cost of submersible electric pumps is usually higher than that of conventional units. However, because the submersible electric pump can save a lot of auxiliary equipment, the equipment investment of the submersible electric pumping station is still lower than that of the conventional pumping station.
4. High reliability and long service life
Compared with conventional pumping station equipment, submersible electric pumps have fewer auxiliary equipment, which not only simplifies operating procedures and facilitates automation, but also greatly reduces the probability of failure, thereby significantly improving the reliability of the equipment. At the same time, because of the rapid development of modern sealing, insulation, cooling and other technologies, submersible electric pumps are not prone to failure. Even in the event of seal leakage, excessive temperature rise, and insulation drop, various sensors will transmit signals in time for control and protection. Therefore, submersible electric pumps have high reliability.
In addition, because the installation and disassembly of the submersible electric pump is very convenient, it can be hoisted in the non-operating season, which greatly improves the management conditions of the unit, thereby prolonging the service life of the pump unit.
Water supply equipment: non-negative pressure water supply equipment, variable frequency constant pressure water supply equipment, fire-fighting air pressure water supply equipment, constant pressure water supply equipment
If you need to buy a submersible electric pump, or want to know the price of our submersible electric pump, please feel free to contact us
Post time: 2021-12-13
