螺旋吸气式增氧机的性能测试与分析

PERFORMANCE TESTING AND ANALYSIS OF THE SPIRAL SUCKING OXYGEN ENHANCER

本文是对螺旋吸气式增氧机性能测试的总结、分析。该机的关键部件为扩散器和螺旋器等。测试结果表明：扩散器的直径、长度和转达与形成的负压大小成正比；螺旋器的直径、螺距比和转速与进气量成正比例关系。该机的增氧百分率达６８．７％；混合速度为１．０５亩·ｍ／ＫＷ·ｈ；当电机功率为０．７５—２．２ＫＷ时，其负荷水面为１．５—５亩。据测试结果分析，该型增氧机的综合性能良好，适于高密度养殖。

The paper summarised the performance of the spiral sucking oxygen enhancer. The key components consisted of the spreader and spiraler.Testing results showed that:themagnitude of the negative pressure was proportional to the diameter,length and rotatingspeed of the spreader,the amount of incoming air was proportional to the diameter,screwlength ratio and rotating speed of the spiraler.The percentage of the oxygen enhancementwas 68.7%,mixing speed was 1.05 mu·m/kw·h.When the power of electric motorwas 0.75 2.2kw,the area of load was 1.5 5mu. Testing results suggested that thecomprehensive performance of the oxygen enhancer was good,and it is suitable for the highdensity aquaculture.