Double-waist-wheel gas flowmeter

Abstract

The invention discloses a double-waist-wheel gas flow meter, and relates to the technical field of gas measurement, the double-waist-wheel gas flow meter comprises a counting module and a metering module, the metering module comprises a metering chamber shell, two groups of synchronous rotors, a front end cover, a rear end cover, a front end plate, a rear end plate, a synchronous gear set and a magnetic coupler, each group comprises two synchronous rotors, each group comprises two synchronous rotors, and each group comprises two synchronous rotors; the synchronous rotors are arranged on the two sides of the metering chamber shell respectively, rotating shafts are arranged at the two ends of the synchronous rotors, the front end plate and the rear end plate are arranged at the front end and the rear end of the metering chamber shell respectively, the rotating shafts penetrate through the front end plate and the rear end plate, and the synchronous gear set is arranged on the front end plate and fixedly connected with the rotating shafts. The front end cover and the rear end cover correspondingly cover the front end plate and the rear end plate, a magnetic coupler is arranged on the front end cover, one end of the magnetic coupler penetrates through the front end cover and is rotationally connected with the synchronous gear set, and the other end of the magnetic coupler is rotationally connected with the counting module. The device is simple and compact in structure, small in occupied space, wide in range and low in starting flow.

Description

technical field [0001] The invention belongs to the technical field of gas measurement, and in particular relates to a double-waisted gas flowmeter. Background technique [0002] Gas waist wheel flowmeter, also known as gas Roots flowmeter, is a high-precision metering instrument used for continuous or intermittent measurement of gas or liquid flow in pipelines. It has the characteristics of high precision, good reliability, light weight, long life, low operating noise, easy installation and use, etc. The waist wheel flowmeter can indicate the cumulative flow, instantaneous flow, single flow, etc. The ideal meter for flow detection. [0003] The metering cavity of a pair of rotor flowmeters currently on the market is mostly composed of a shell and front and rear plates. When the gas passes through the rotor assembly of the flowmeter, a positive displacement flowmeter will be generated at the outlet of the gas Roots flowmeter. The unique pulsating flow leads to unbalanced d...

AI Technical Summary

Problems solved by technology

[0003] The metering chamber of a pair of rotor flowmeters currently on the market is mostly composed of a housing and front and rear end plates. When the gas passes through the rotor assembly of the flowmeter, a volumetric flowmeter will be generated at the outlet of the gas Roots flowmeter. The unique pulsating flow leads to unbalanced displacement and large vibration in the pipeline, which affects the operation stability of the entire flowmeter, reduces the measurement accuracy of the flowmeter and shortens the service life of the product

[0004] The flowmeters with two pairs of rotors currently used in the market basically directly rotate the two pairs of rotors through the coupling, so that the bearings of the coupling cannot be cleaned and lubricated well, which affects the small flow rate of the meter. Metering performance and shortened product life

Images