Large Mining Submersible Pumps

Our large-scale high-voltage submersible electric pump began in 1976 with the introduction of German company technology combined with domestic and foreign mines and mine drainage conditions, after more than thirty years of continuous technological innovation, and we have gradually realized independent research and development and system optimization. The company has developed large motor electromagnetic calculation optimization and design software, excellent hydraulic model design software, large submersible electric pump real machine test platform, so that the equipment in the high voltage level (6KV, 10KV or customized), high power (up to 4,000kW), high head (up to 1,500m), large flow rate (up to 1,800m³/h), high reliability and intelligent protection, etc., to reach the international Advanced level.

Aiming at different drainage mediums (such as clear water, sediment water, coal dust water, seawater, and acidic and alkaline mediums) and application environments, the company boldly adopts new materials and techniques, develops relay drainage system and pontoon drainage system, and takes the lead in realizing vertical, horizontal, and slanting multi-angle safe operation scheme. In terms of key components, the thrust bearing is optimized by adopting FB102, a polymer material imported from the UK, which greatly improves the bearing capacity and wear resistance; meanwhile, impellers, guide vanes and pump segments made of various materials are developed through the deployment of micro-alloying elements, which effectively improves the wear-resistant and corrosion-resistant performance and service life of the equipment. For the characteristics of submersible pumps, the company has developed a special intelligent protection controller for large submersible pumps, which can realize all-weather automatic monitoring of the whole working conditions, and further guarantee the safety and intelligence of the equipment operation.

In terms of hydraulic design, the product is based on the simulation optimization model, and the impeller wrapping angle of the pump is refined to improve the overall efficiency and anti-cavitation ability. By optimizing the flow distribution and head matching, it ensures that the pumps always run stably throughout the working interval, without overpowering and cavitation, and the rated point is controlled in the center of the high-efficiency area, which greatly improves the use of efficiency. The motor part adopts self-developed wet stator (water-filled) fully enclosed asynchronous motor with IP68 protection level, adopting advanced winding insulation process, and fully waterproof manufacturing process of winding and cable joints, which makes it have excellent sealing and waterproof performance. Combined with the optimized electromagnetic and structural design, a full set of simulation and analysis models of electric pump starting current, voltage, temperature rise, performance curve, etc. are established to ensure that the equipment has excellent starting performance and long-term stable operation. Through the whole process of technical control and test verification, the efficiency, overload capacity and reliability of the motor have been comprehensively improved, truly realizing the efficient operation of the integration of machine, electricity and instrumentation.

Installation form:

The submersible electric pump is installed vertically in the vertical shaft silo, and the drainage system consists of a large submersible electric pump (with a relay submersible pump underneath) plus an inhalation cover, and the bottom end of the system hangs down to the bottom of the shaft, discharging the water to the ground at one time.

Advantages: the submersible electric pump runs vertically, the force is reasonable, the operation and maintenance cycle is long, the water silo occupies a small area, the loss of drainage pipeline is small, to meet the needs of underground drainage, and can completely replace the waterproof gate.

Horizontal (inclined) mounting：

Drainage system consists of submersible electric pump, suction cover and mining trolley. Horizontal (inclined) installation can be used for fixed installation in the mine pump room, inclined shaft restorative drainage, emergency drainage (no track can choose a small trailer) and other working conditions, practical and convenient.

Pros：

Horizontal fixed installation of lifting and pipeline support facilities require less, less pool construction, flexible installation. During the restorative drainage process, the submersible pump system can be changed with the water level, the depth of water chasing, shorten the drainage time, effective drainage water treatment.

Pontoon Installation：

The pontoon boat type submersible electric pump system consists of pontoon boat, submersible electric pump, connecting assembly, hand-pulled hoist and so on. It can be used for open pit remineralization drainage and other work, large pits are easy to move, the drainage depth is low, the pontoon boat is lowered with the drop of the water level, and it can solve the continuous type of mobile large flow and high head drainage work.