Analysis of Application Fault of Double Rotor Flowmeter

Analysis of Application Fault of Double Rotor Flowmeter

Dual-rotor flowmeter is a closed chamber composed of the empty groove part of the spiral rotor (measurement element) and the inner wall of the metering chamber as the measurement chamber. The rotor can output 8 times the volume of the cavity per revolution , and the flow rate of the fluid is at the speed of the spiral rotor. In proportion, the flow rate of the fluid can be converted based on the accumulation of the rotor speed. Therefore, in the application process, there will often be some minor problems, then the following two-rotor flowmeter application failure analysis:

1. If the double rotor flowmeter has a large negative error during application; the bypass valve leaks; the spiral rotor, the metering chamber wall or bearing is worn or corroded; the flow rate is below the lower limit; the magnetic coupling slides or the gear system is periodically hindered The actual fluid viscosity is less than the test fluid viscosity. Should check the bypass valve; replace the bearing, check the gear, adjust the gap; increase the flow; repair or replace the magnetic coupling or gear system; select the test liquid with the actual fluid viscosity similar to the flowmeter or viscosity correction.

2. If the double rotor flowmeter has large positive error during application ; the flow has large pulsation or contains gas; the actual liquid viscosity is greater than the test liquid viscosity; when the small inlet valve is closed, the medium is filled with the measuring chamber; the flow rate fluctuation should be reduced; Or increase the gas separator; select the test liquid with the actual liquid viscosity to check the flowmeter or make the viscosity correction; use the flowmeter outlet valve to regulate the medium flow.

3 , in the application if there is a double rotor flowmeter spiral rotor does not turn; pipelines have debris; filter Shun damage, debris into the table, gear stuck; due to excessive flow, bearing wear, resulting in spiral rotor collision , Causes stuck; Should clean the flowmeter and the pipeline; Repair the filter; Replace the bearing, guarantees the gap to be able to rotate flexibly.

The above is " Double Rotor Flowmeter Application Failure Analysis:" Hopefully helpful to everyone, Jiangsu Huayi Measurement & Control owns high-level knowledge groups consisting of disciplined professionals in automation instrumentation, automatic control, electronic engineering, and mechanical and electrical engineering. Provide " first-class products, first-class service " , to provide customers with specialized, targeted system solutions to help customers solve various problems encountered in production, optimize control and improve product quality. Perhaps you Jiangsu Huayi measurement and control orifice flowmeter, electromagnetic flow meters, pressure transmitters, interest paperless recorder, welcome new and old customers to consult.