该成果用于从流动地表水源取水的移动式和固定式取水构筑物，其功能是防止取水头堵塞、改善水泵运行工况条件、保证正常的取水生产、节约能源、减轻工人劳动强度。原理：水泵取水时，取水头形成一负压场，通过理论研究和结构设计使负压场在所要求的方向具有确定的最小边界。装 The results are for mobile and fixed intake structures for water withdrawal from flowing surface water sources. Their function is to prevent plugging of the intake head, to improve operating conditions of the pump, to ensure normal water production, to save energy and to reduce the labor intensity of the workers. Principle: When the water pump takes water, the water head forms a negative pressure field. Through theoretical research and structural design, the negative pressure field has a certain minimum boundary in the required direction. Loaded