A stacked roll double-connected two-dimensional piston dynamic flowmeter

Abstract

The invention discloses a stacking and rolling double-connected two-dimensional piston type dynamic flowmeter. The left housing is provided with a liquid inlet, the right housing is provided with a liquid outlet, the left housing is provided with a left metering unit, and the right housing is provided with a liquid inlet. There is a right metering unit in the body, and the left housing is fed and drained through the left metering unit, and the right housing is fed and drained through the right metering unit; the left metering unit includes a left piston, and the right metering unit includes a right metering unit. The piston, the left piston and the right piston are connected through a stacked roller transmission that allows the left piston and the right piston to keep synchronous rotation and relatively independent axial movement; the left piston is connected to a left speed sensor for detecting the axial speed of the left piston Assemblies, the right piston is connected with the right speed sensor assembly for detecting the axial speed of the right piston; the central processing unit calculates the flow rate according to the left speed signal and the right speed signal; the present invention uses the speed sensor to measure the flow rate, and the output signal and the flow rate The signal is directly proportional, with high linearity and high response frequency.

Description

technical field [0001] The invention relates to the technical field of flowmeters, in particular to a stack-roll double-connected two-dimensional piston dynamic flowmeter. Background technique [0002] Positive displacement flowmeter has high measurement accuracy and is less affected by fluid viscosity and flow state. It has been widely used in aerospace ships, mechatronics, chemical engineering and other fields. As a high-precision volumetric flowmeter, piston flowmeter can be divided into rotary piston flowmeter and reciprocating piston flowmeter according to the movement mode of the piston. The reciprocating piston flowmeter has a complex structure and is often used in the refueling mechanism of the gas station. The structure of the rotary piston flowmeter is slightly simple, allowing a certain leakage flow to reduce wear and improve the anti-pollution ability, but sacrifices the measurement accuracy, and can be used for the measurement of liquids such as water and liqui...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application solves the technical problem of hysteresis in the dynamic flow reading of positive displacement flowmeters in the prior art by providing a stacked double-connected two-dimensional piston dynamic flowmeter

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