The working principle of the rotary cup flowmeter and the measurement and calculation method of the flow rate

Abstract: The working principle and flow rate measurement and calculation method information of the rotary cup flowmeter are provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. When the water flow acts on the rotating cup of the sensing element of the instrument, due to the difference of the concave and convex shapes of the cups on the left and right sides, the pressure will be unequal, and the pressure difference will form a rotating torque and promote the rotating cup. The faster the water flow, the faster the rotation of the rotating cup. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the working principle of the rotary cup flowmeter and the details of the flow rate measurement and calculation method. When the water flow acts on the sensing element of the instrument——When the cup is rotated, due to the difference in the shape of the concave and convex cups on the left and right sides, the pressure will be unequal, and the pressure difference will form a rotational moment and promote the rotation of the cup. The faster the speed of the water flow, the faster the rotating speed of the rotating cup; there is a certain functional relationship between them, which is determined by the experiment of calibrating the water tank. The verification result of each instrument is accompanied by a verification formula, and its form is as follows: V=Kn+C where V—Flow velocity (m/s); n—The rotation rate of the bell, equal to the total number of rotations of the bell“N”with the corresponding tachometer duration“T”ratio, that is, n=T(N)(1/S)K—Hydraulic pitch (m); C—Instrument constant (m/s). K and C are the coefficients that characterize the performance of the instrument, which are related to the size and shape of the rotary cup, the axial clearance of the rotary shaft, the arc and smoothness of the thimble and the gem bearing. Therefore, the matching relationship of this part must be checked strictly in accordance with the technical requirements. 2. Measurement and calculation method of the flow rate. The flow rate of the water is measured with a flow meter, which is actually the measurement of the rotation generated when the rotating cup is impacted by the water flow within a predetermined time. number. The number of revolutions of the rotating cup is converted into an electrical pulse signal by means of the contact mechanism of the instrument, and transmitted to the counter of the water surface part through the wire. Each time the rotary cup rotates 1 turn, the contact mechanism connects the circuit once, and the counter sends out a signal. The measurer counts the number of signals“N”and the corresponding speed measurement duration“T”, according to this, the water flow velocity can be calculated according to the above formula. Specializing in the production of flow meters, Parshall troughs, open channel flowmeters, ultrasonic flowmeters, ultrasonic sounders, etc. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'The working principle of the rotary cup flowmeter and the measurement and calculation method of the flow rate'

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