V-shaped ball valve element optimization design method capable of achieving equal-percentage characteristic

The invention discloses a V-shaped ball valve element optimization design method capable of achieving the equal-percentage characteristic. The method comprises the steps of collecting data informationof an original V-shaped ball valve element; calculating the actual flow of the valve core of the ball valve; calculating an equal-percentage characteristic coefficient of the valve core of the ball valve; calculating the deviation between the equal percentage characteristic coefficients of the valve core of the ball valve by using a standard deviation method, and judging whether the deviation isacceptable by using a hypothesis test analysis method; if yes, considering a fact that the final optimized shape of the V-shaped ball valve element is obtained, and otherwise, calculating the theoretical flow value of the original V-shaped ball valve element; optimizing the original V-shaped ball valve core based on the actual flow and the theoretical flow until the final optimized shape of the V-shaped ball valve core is