Standard meter method gas flow testing device and frequency conversion regulation control algorithm thereof

The invention relates to a standard meter method gas flow testing device and a frequency conversion regulation control algorithm. The device comprises a support, a detection mechanism and a centrifugal fan; the detection mechanism comprises a ball valve, a standard meter, a steady flow tank and a confluence tank; the confluence tank is arranged on the lower portion of the support; the steady flow tank is arranged at the upper end of the support; one side of the confluence tank is connected with the centrifugal fan through a hose; the upper end of the confluence tank is connected with the lower end of the ball valve; the upper end of the ball valve is connected with the lower end of the standard meter through a first pipeline; the upper end of the standard meter is connected with the lower end of the steady flow tank through a second pipeline; a pressure sensor is arranged on the second pipeline; and one side of the steady flow tank is provided with a detected meter interface. Aiming at the problems of long in