Anti-blocking plug-in gas flow meter

Abstract

The invention discloses an anti-blocking plug-in type gas flow meter which comprises a gas flow meter main body, and a measuring pipe is connected to the gas flow meter main body. Through arrangementof a first-stage filter screen, a contact area between a probe and a measured gas is greatly enlarged, a user can conveniently and accurately measure, and meanwhile, the probe is prevented from beingblocked; through the arrangement of fan lugs, when the gas circulates, an outer cover of a measuring mechanism can be driven to rotate, and a condition that impurities in the gas adhere to the probe and affect use of the gas flow meter is avoided; through the arrangement of a filtering mechanism, tiny impurities in the gas can be filtered in a graded mode, the impurities are prevented from makingcontact with the probe, and a measuring effect is guaranteed; through the arrangement of a hammering ball, the first-stage filter screen and the filter mechanism are fully hammered, the impurities areprevented from adhering to the first-stage filter screen and the filter mechanism so that the gas is ensured to be unimpeded, and measurement accuracy is guaranteed; and through the arrangement of anexternal flow computer, a user can fully master other detailed data of the gas.

Description

technical field [0001] The invention belongs to the technical field of gas flow meters, and in particular relates to an anti-blocking plug-in gas flow meter. Background technique [0002] A gas flow meter is an instrument for measuring gas flow, which is mainly installed in the pipeline to record the amount of gas flowing through it. Among them, the gas flowmeter is divided into thermal gas mass flowmeter, precession vortex flowmeter, turbine flowmeter and vortex flowmeter. Among them, the thermal gas mass flowmeter is used in a wide range and is suitable for the measurement of all gas flowmeters. (except acetylene). [0003] The thermal gas mass flowmeter adopts the principle of thermal diffusion, and its sensing element includes two thermal resistors, one is a speed sensor, and the other is a temperature sensor that automatically compensates for changes in gas temperature. When two RTDs are placed in the medium, where the speed sensor is heated to a constant temperature ...

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