Heze City, Shandong Heze Bureau "LQS type two-phase flow submersible pump dredging system" successfully

Recently, in the evaluation of Shandong Yellow River Scientific and Technological Progress Award, the "LQS two-phase flow submersible pump dredging system development" achievement came to the fore and won the first prize.
The project was jointly developed by the Yellow River Authority of Heze City, Beijing Qingda Huayun Science and Technology Development Center, and Taian Qianyang Dredging Co., Ltd. It is a parallel-type dredging system for electric pump platforms developed on the basis of simple mud boats. Connect the platform, float in river water, install traction, winch and electric control cabinet on the platform. Take the method of strengthening the dynamic seal, so that the water pressure in the inlet cavity before the pump side mechanical seal is zero. For the first time, the solid-liquid velocity ratio two-phase flow design theory was applied to the water conservancy design of the submersible pump. The structure, shape and rotation angle of the pump flow-through components were scientifically designed to reduce the degree of wear.
The system has achieved remarkable results since the start of trial operation of the Yellow River dredging project from the beginning of 2002. Compared with the simple mudboat, the system has stable and reliable operation, long service life, low power consumption, and high sand extraction efficiency. It can not only be applied directly to the backfilling of embankments along the entire Yellow River, but also can be applied directly in the hydraulic dredging and dredging (solid embankment) projects in the middle reaches of the Yellow River and other rivers, lakes, channels, and ponds.