What are the precautions for the use of natural gas flow meters? Posted by : admin / Posted on : Jul 29， 2020

We know that the flow meters for measuring natural gas mainly include gas waist wheel (Roots) flow meters, gas turbine flow meters, precession vortex flow meters and orifice flow meters, and we know that Roots flow meters should be used when measuring natural gas. Attention issues, then what matters should be paid attention to when using gas turbine flowmeters and precession vortex flowmeters that are also commonly used to measure natural gas?
The gas turbine flowmeter is simple in structure and easy to install. It is often used to measure the flow of natural gas. However, when the turbine of the turbine flowmeter rotates at a high speed, mechanical friction will occur between the bearing and the shaft, so pay attention to lubricating it. The method for regular replenishment of lubricating oil. At the same time, if the high-speed flowing gas contains larger solid particles, it will easily damage the turbine blades. Therefore, a filter should be installed on the pipeline in front of the turbine flowmeter.
The precession vortex flowmeter is also widely used in the measurement of natural gas. It has a wide operating temperature range, strong applicability, and low requirements for upstream and downstream straight pipe sections. Its main disadvantage is that the pressure loss is large, and The precession vortex flowmeter is a fluid-vibrating flowmeter, which is more sensitive to pipeline vibration and electromagnetic interference. Therefore, it should be fully considered for use in an on-site environment with less vibration and no electromagnetic interference during installation.

Gas flowmeter