G2.5 diaphragm gas meter

Abstract

The invention discloses a G2.5 diaphragm gas meter. A machine core is installed in an installation shell and comprises a machine core body, a flow channel structure is formed in the top of the machine core body, and the cross section of an air distribution flow channel and the cross section of an air outlet flow channel are both of a hexagonal structure, wherein the hexagon structure is formed by coinciding any side of a rectangle and the long bottom side of an isosceles trapezoid. A partition board is arranged in the air distribution flow channel. A valve grid is installed on the top of the machine core and provided with two valve decks. Two vertical shaft fixing pipes are both internally provided with a vertical shaft, the other end of the each vertical shaft is connected with a transmission mechanism, the transmission mechanism is provided with an error adjusting mechanism, and the transmission mechanism is connected with the two valve decks. The flow channels and the valve grid in the machine core are improved and designed. The error adjusting mechanism is further arranged, so the diaphragm gas meter can meet the national standard GB / T6968 if the rotation volume in the G2.5 diaphragm gas meter is 0.8 L. The structures of the flow channels are more optimized, metering precision is high, the size of the gas meter is reduced, and part cost and package, transport and storage cost are greatly reduced.

Description

technical field [0001] The invention relates to the field of membrane gas meters, in particular to a G2.5 membrane gas meter with a slewing volume of 0.8L. Background technique [0002] Diaphragm gas meter is a kind of volumetric gas volume measuring instrument. It is a metering system composed of two containers. Each container is divided into two measuring chambers through the membrane. The pressure difference at the inlet and outlet of the gas meter pushes the membrane to move. Under the action of the pressure difference, the membrane continuously moves alternately, pushing the two valve covers to continuously discharge the gas filled in the metering chamber to the gas outlet of the gas meter, and then connects with the counter through a mechanical transmission mechanism to realize the gas flow through the membrane type. The gas on the meter is measured by volume. Now the commonly used membrane gas meters at home and abroad are all G2.5 membrane gas meters. G2.5 membrane ...

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Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention proposes a G2.5 diaphragm gas meter, and the present invention solves the technology that cannot use a movement with a rotation volume of 0.8L to produce a G2.5 diaphragm gas meter. problem; also solve the existing model gas meter large volume, aging structure, poor matching of the flow channel and large pressure loss and other technical problems

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