Fully Automatic Water Meter Test Bench
Our company has designed and manufactured an active piston-type liquid flow standard device with water as the medium. This standard device is uniquely designed and its basic working principle is to compare the volume flow of the fluid discharged by the piston with the volume flow of the measured flowmeter over a certain time interval. The volume of fluid discharged by the piston is obtained by multiplying the cross-sectional area of the piston cylinder and the displacement of the piston. Driven by a servo motor to reduce disturbance to the fluid flow. It has many advantages such as stability and reliability, good repeatability, a high degree of automation, and simple operation. The shortcomings of the start-stop effect or the commutator effect of the traditional liquid flow standard device are avoided. Helps to improve the level of measurement uncertainty.
Device Composition
The active piston liquid flow standard device is mainly composed of a frame, a piston rod, a piston cylinder, a motor, a ball screw, a supporting optical axis, a sensor, a protective shell, etc. The piston rod is in close contact with the piston cylinder through the Y-shaped seal ring, and the three together form a sealed cavity. The movement of the piston rod is realized by the servo motor, coupling, ball screw, supporting optical axis, etc., the piston rod and the ball screw The rod is connected by a screw nut, and the direction of movement is controlled by a servo motor and a ball screw. A suction pneumatic valve and a drainage pneumatic valve are installed at the outlet of the piston cylinder. The suction pneumatic valve is connected to the water tank, and the drainage pneumatic valve is connected to the meter pipeline. Install high-precision temperature and pressure sensors.
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