【摘要】：水輪機外特性主要受其幾何尺寸影響,但目前尚沒有探明水輪機外特性與其幾何尺寸之間的關(guān)系式,在水輪機一維流動理論中無法采用水輪機幾何尺寸信息對其外特性進行預(yù)測。本文在水輪機流量調(diào)節(jié)方程的基礎(chǔ)上結(jié)合能量守恒定律建立了混流式水輪機的一維數(shù)學(xué)模型,得到了流量特性與力矩特性的顯式表達式,可有效預(yù)測水輪機外特性曲線,并通過與實測數(shù)據(jù)的比對驗證了該模型的正確性。文中提出的水輪機外特性曲線預(yù)測方法在水電站初步設(shè)計、過渡過程計算中混流式水輪機特性曲線延伸等領(lǐng)域具有重要的理論意義和實用價值。
[Abstract]:The external characteristics of hydraulic turbines are mainly affected by their geometric dimensions, but the relationship between the external characteristics of hydraulic turbines and their geometric dimensions has not been proved at present. In the one-dimensional flow theory of hydraulic turbine, it is impossible to predict the external characteristics of the turbine by using the geometry information of the turbine. In this paper, the one-dimensional mathematical model of Francis turbine is established based on the governing equation of turbine flow and the law of conservation of energy. The explicit expressions of flow and torque characteristics are obtained, which can be used to predict the external characteristic curve of hydraulic turbine effectively. The correctness of the model is verified by comparing with the measured data. The prediction method proposed in this paper has important theoretical significance and practical value in the fields of preliminary design of hydropower station and extension of characteristic curve of Francis turbine in the calculation of transition process.
【作者單位】： 西安理工大學(xué)水利水電學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(51479166;51339005)
【分類號】：TV734.1

【參考文獻】

相關(guān)期刊論文 前10條

1 馮建軍;羅興，

本文編號：2459270