Gas metering device

A technology of gas measurement and gas volume, which is applied in the direction of measuring devices, volume measuring instruments/methods, liquid/fluid solid measurement, etc. It can solve the problems that are not suitable for measuring gas pressure and gas volume, and achieve the effect of small error and large measurement range

Active Publication Date: 2020-04-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, how to solve the problem that the existing gas metering device is not suitable for measuring the gas volume when the gas pressure is constantly changing or the flow rate is unstable is a technical problem that those skilled in the art need to solve

Method used

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  • Gas metering device

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] like figure 1 As shown, the gas metering device of the present invention includes a metering tube 21 filled with liquid, a balance cup 20 connected to the metering tube 21 through a first pipeline 22 , and a lifting unit connected to the balance cup 20 . The metering tube 21 can be a sealed glass metering tube 21 , and the first pipeline 22 can be a U-shaped connecting hose 22 . The lower end of the metering tube 21 is connected to the balance cup 20 through a U-shaped connecting hose 22 to facilitate the movement of the balance cup 20 up and down. The U-shaped connecting hose 22 is a silicone rubber latex tube, and the glass metering tube 21 is a cylinder with the same upper and lower diameters, and is arranged in a replaceable manner. Specifically, it can be replaced with the same length and different diameters according to the amount of gas to be measured. The g...

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Abstract

The invention provides a gas metering device which comprises a metering tube, a balance cup, and a lifting unit, wherein the metering tube is used to store gas needing to be metered; the balance cup communicates with the metering tube by a first pipeline, and the balance cup is designed to store a liquid communicating with the external environment; the lifting unit is connected to the balance cupso as to drive vertical motion of the balance cup; and after injection of the gas into the metering tube, the lifting unit can drive the balance cup to move, make the liquid level in the balance cup and the liquid level in the metering cup balanced and compute the volume of the gas according to a motion distance of the balance cup. The gas metering device has the advantage that automatic collection and metering of the volume of gas which has unsteady flows, uncertain constituents and high pressure, and is generated in a lab can be achieved.

Description

technical field [0001] The invention relates to the technical field of metering devices, in particular to a gas metering device. Background technique [0002] There are many types of instruments and devices used for gas volume measurement in industry or laboratories. For example, the gas measurement methods commonly used in laboratories include differential pressure method, drainage method or syringe collection method. The equipment used in these methods is simple, but it is only suitable for the measurement of trace low-pressure gases. The collection of gas by drainage and gas collection requires placing the gas collection bottle in a water tank. Due to the existence of water pressure, the pressure of the gas collected in the gas collection bottle is greater than the pressure of the atmosphere. According to the gas state equation, at the same temperature, place The amount of substance of the gas of the gas collecting bottle in the water tank is larger than the amount of su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F22/02
Inventor 郑伦举徐旭辉段铁军李贶王强马中良承秋泉
Owner CHINA PETROLEUM & CHEM CORP
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