| 摘要: |
| 运用水轮机运转特性曲线，求取水轮机工作点的效率和计算水轮机的过流量，以近似率定蜗壳流量系数，并与现场效率试验的实测资料进行了分析比较。结果表明，这种方法具有较高的精度，计算流量与实测流量的最大偏差可控制在4％以下，可广泛应用于蜗壳流量系数的近似率定。 |
| 关键词: 差压法测流，蜗壳流量系数，水轮机流量 |
| DOI： |
| 分类号:TK730 |
| 基金项目:能源部水利水电科学基金资助项目 |
|
| The Approximate Calibration of the Flow Coefficient with the Spiral Differential Pressure Method |
|
Zhang Jiangbin
|
| Abstract: |
| The hydraulic turbine's performance curve is used for calculating the furbine's efficiency and flow,in order to compare the flow coefficient of spiral-casing approximately calibrated with the prototype turbine's efficioncy and the test data.The result shows that this method has higher accuracy,with the maximum error of the calculation flow to the measurement flow being less than 4 percent.It can be used widely in the approximate calibration of the spiral-casing flow coefficient. |
| Key words: differential presure method,flow coefficient of spiral-casing,turbine's flow |
