Gas Roots flowmeter

Abstract

The invention relates to a gas Roots flowmeter. The gas Roots flowmeter comprises a metering cavity, waist wheel rotors, a counter and a volume correction instrument, the waist wheel rotors are mounted on the cover plates on the two sides of the metering cavity through bearings; the waist wheel rotors are in transmission connection through synchronous gears; two ends of the metering cavity are respectively provided with an upper cover body and a lower cover body; the synchronous gears and the bearings are arranged in the upper cover body and the lower cover body; the volume correction instrument is installed outside the metering cavity through a support, the counter is installed on the upper cover body, the flowmeter further includes an oil pump, the oil pump is electrically connected withthe volume correction instrument, the upper cover body and the lower cover body are respectively provided with oil spray nozzles used for spraying oil to the internal synchronous gears or bearings, and the oil spray nozzles are communicated with the oil pump through oil pipes. The gas Roots flowmeter has an automatic lubricating function, lubricating oil can be quantitatively, timely, effectivelyand accurately sprayed to the synchronous gears and the bearings which need to be lubricated, online accurate metering of the flowmeter is guaranteed, the service life is prolonged, the flowmeter isconvenient to maintain, and the labor intensity is reduced.

Description

technical field [0001] The invention relates to a gas Roots (waist wheel) flowmeter, in particular to a gas Roots flowmeter capable of realizing intelligence, automatic quantitative oil injection, timely, effective and accurate lubrication of synchronous gears and bearings. Background technique [0002] The gas Roots (waist wheel) flowmeter is a precision metering flow meter. During the measurement process, the inner waist wheel rotor, synchronous gear and bearing rotate at high speed. In order to ensure the long-term online use of the flowmeter and accurate measurement, this requires daily maintenance. timely and effective. At present, the lubricating oil of gas Roots (waist wheel) flowmeters on the market is directly poured into the space between the cover plate and the upper and lower covers, which has the following consequences: [0003] (1) Due to the different directions of the pipelines of customers, the way of installing the gas Roots (waist wheel) on the pipeline i...

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Problems solved by technology

[0003] (1) Due to the different directions of the pipelines of customers, the way of installing the gas Roots (waist wheel) on the pipeline is also different, which can be divided into horizontal installation and vertical installation. Therefore, the manufacturer needs to install the gas Roots (waist wheel) flowmeter At least two more oil filling holes and two observation holes are processed on each upper and lower cover of the machine, and finally the plug and oil window are installed, which directly increases the production difficulty and economic cost

[0004] (2) Due to the excessive drilling of the upper and lower covers of the flowmeter, the risk factor of the gas leakage point directly increases

[0005] (3) The lubricating oil poured into the space between the cover plate of the gas Roots (waist wheel) flowmeter and the upper and lower covers will directly flow into the metering cavity of the flowmeter through the gap, and the waist of the gas Roots (waist wheel) flowmeter The gap between the wheel rotor and the inner wall of the metering chamber is extremely precise (less than 0.1mm) and fixed. Due to the intrusion of lubricating oil, the resistance of the rotor increases and the measurement is inaccurate. At the same time, the lubricating oil on the waist wheel rotor will also absorb a large amount of gas The impurity in the air caused the waist wheel rotor to be stuck and stopped, and the gas consumption of downstream customers was interrupted, causing a large production accident and involving serious economic disputes between the trading parties

[0006] (4) If too little lubricating oil is poured into the gas Roots (waist wheel) flowmeter, the synchronous gears and bearings will not be lubricated in time and effectively, which will directly cause the service life of the flowmeter to be greatly shortened, and the price of the flowmeter itself will be greatly reduced. Expensive, will inevitably increase customer costs

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