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- Title
新型自吸离心泵自吸结构设计与试验研究.
- Authors
武永生; 刘建瑞; 李红; 陈凯; 常浩
- Abstract
For traditional high flow self-priming centrifugal pumps are subject to poor self-priming performance and low efficiency,a large ffow self-priming centrifugal pump with a new self-priming structure is designed. In the design,a high-pressure jet is involved into the gas exhaust system of the pump,then the structure of jet nozzle is designed carefully and reasonably,and their main dimensions are decided accordingly. Moreover,a check valve is designed as well for the nozzle,and a globe valve with good air tightness is chosen. A new coupling-clutch transmission device is put forward,in which the shafts of the pump and a compressor is connected with a pulley to ensure the compressor to be detached quickly after the self-priming completion. A compressor is selected according to the requirement on the exhaust by the pump and relevant national technical standards. Experiments on the sell-priming performance of the newly designed self-priming pump are carried out,and the priming times at different suction heights are recorded. The experimental results show that the seH-priming times are 62, 92,121 and 173 s,respectively,when the suction heights are 5 . 3,6 .0,7 . 0 and 8 . 1 m . These selfpriming times are less than those specified in relevant national technical standards. Thus,for the pump,its advantage in the self-priming performance is obvious,and the overall efficiency of the pump unit is also improved significantly.
- Subjects
PERFORMANCE of centrifugal pumps; PRIMING of centrifugal pumps; CHECK valves; HIGH-pressure steam; AIR compressors; EXHAUST systems
- Publication
Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao, 2016, Vol 34, Issue 7, p579
- ISSN
1674-8530
- Publication type
Article
- DOI
10.3969/j.issn.1674-8530.15.0141