Gas Meter

Introduction

Gas meter is a kind of gas flow meter, also known as gas meter, which is a mandatory verification measurement instrument listed in the national strong inspection list. The user must use the gas meter to be qualified by the quality and technical supervision department for the first time. The gas meter is made of aluminum material and weighs about 3 kg. It is placed in the instrument box welded by the steel plate and connected with two gas pipes by nuts. Such as industrial gas meters, membrane gas meters, IC card smart gas meters and other instruments.

principle

A gas meter is a flow meter that is used to accumulate the total volume of gas flowing through a pipeline. There are two metering boxes in the table. Each box contains a skin bag made of oil-impregnated thin sheepskin or synthetic rubber with a certain volume. As the gas flows through, the bladder expands and contracts, thereby changing the volume between the bladder and the metering box while changing the position of the slide valve. When the left slide valve moves to the right, air in chamber A and chamber B are exhausted, the right slide valve is in the middle, and chambers C and D stop intake and exhaust. After the intake of chamber A, the left slide valve moves to the left and the right slide valve moves to the left. At this time, the intake in chamber D and the exhaust in chamber C stop the intake and exhaust. Then the left slide valve moves to the left again, and the right slide valve moves right to the middle. At this time, the chamber B is in the intake, the chamber A is exhausted, and the chambers C and D stop the intake and exhaust. Then the left slide valve moves to the middle and the right slide valve moves to the right. At this time, the chamber C is in the intake, the chamber D is exhausted, and the chambers A and B stop the intake and exhaust. In this way, one cycle discharges the gas from the two metering tanks, and the crank swings once, driving the gears to rotate, and the rotation of the gears drives the counter. The reading of the counter is the volume of exhaust gas.