The IWRM-Fergana Project: Kyrgyzstan, Tajikistan and Uzbekistan

Water resource management / Development projects / Water users associations / Irrigation canals / Irrigation management / Central Asia / Kyrgyzstan / Tajikistan / Uzbekistan / Fergana Valley

Contents

p. cm. Papers presented at a regional workshop. Includes bibliographical references. ISBN 0-89629-702-0 (pbk) 1. Agriculture and state—Asia, Central—Congresses. 2. Food Supply—Government policy—Asia, Central—Congresses. 3. Agriculture—Research—Asia, Central

Improving impeller and water flow section of vane pumps

As a result of the research, it was found that the blades of the working impellers of the pumps are eroded at the inlet and outlet. Based on software studies, the points of erosion caused by cavitation and sand particles at the entrance of the impeller and the points of operation of the impeller under heavy load have been determined. The operating points under heavy load are compared with working impellers in nature. After comparison with software developments, it is determined that they are compatible with working impellers in natural conditions. The following impeller model is recommended to reduce cavitation and erosion processes in the impeller (Figures. 6, 10). The recommended impeller is shown in the inlet of the impeller to free water entry, prevent water shortage, and reduce the level of cavitation. (Figures 6, 10, 11). The ingress of water into the impeller is freed, the continuous movement of water is restored, and the methods of preventing the processes of decay and holes formed in the impeller are given. Recommended methods of significantly reducing the level of wear in the input and output parts of the impeller are given

The Regional Knowledge Fair on Integrated Water Resources Management in Central Asia, Kyrgyz. National Drama Theater, Osh city, Kyrgyz Republic, 7-8 September, 2007

Report of a Knowledge fair organized by IWMI and Scientific Information Center of the Interstate Commission for Water Coordination in Central Asia (SIC-ICWC). Funded by the Swiss Agency for Development and Cooperation (SDC