Detector for gas solubility in liquid

A solubility and tester technology, applied in the direction of instruments and analytical materials, can solve the problems of many measuring devices, errors in measurement results, high cost, etc., and achieve the effect of accurate experimental measurement results, fewer components and simple structure

Inactive Publication Date: 2007-04-11
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the existing gas solubility testers in liquids, there are mainly three deficiencies: First, different measuring instruments are required to measure the gas solubility in liquids under low pressure and high pressure, resulting in more measuring equipment
Secondly, the composition of measuring instruments is complex, the manufacturing technology is difficult, and the cost is high
Again, ignoring the volume of the space above the solvent, pipelines, etc., and the inability to determine the influence of temperature changes on the volume of the container and the measurement accuracy of the instrument will lead to large errors in the measurement results

Method used

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  • Detector for gas solubility in liquid
  • Detector for gas solubility in liquid
  • Detector for gas solubility in liquid

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with drawings and embodiments.

[0019] As shown in Figure 3, the present invention is equipped with stirring vane 16 in the bottom of cylinder body 5, and stirring vane 16 is immersed in the experiment liquid 15, and stirring vane 16 communicates with the torque motor 18 that is assembled outside the bottom of cylinder body 5 through motor shaft. connection, the rotary seal 17 on the motor shaft acts as a seal, and separates the inner cavity of the cylinder body 5 from the outside atmosphere. A piston 7 is housed in the cylinder body 5, and the piston 7 is located above the experimental liquid 15. One or A plurality of sealing rings 6, the upper end of the piston 7 is connected with the screw rod 11, the bolt 13 and the stopper 12 fix the lower end of the screw rod 11 in the inner hole of the upper end surface of the piston 7, and the screw sleeve 10 connected with the screw rod 11 is fixed in the cyli...

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Abstract

The present invention is instrument for gas solubility in liquid. The instrument has stirring blades soaked in test liquid and connected to the shaft of torque motor, one cylinder with piston connected to a lead screw, one precise constant temperature water bath with temperature display for the cylinder to be set in, and one gas source connected to gas pipe and precise manometer, with the precise manometer being connected to the inner cavity of the cylinder through the axial hole in the piston. The present invention converts the rotation of the lead screw into the axial motion of the piston inside the cylinder to control the gas pressure in the liquid inside the cylinder cavity, and has precise measurement of temperature, piston displacement and in-cavity gas pressure. The gas amount over the liquid may be calculated based on the gas state equation and the dissolved gas amount may be obtained. The present invention is used in measuring gas content and solubility in liquid.

Description

technical field [0001] The invention relates to the field of measuring gas content in liquids, in particular to a gas solubility tester in liquids. Background technique [0002] The gas solubility testers currently used in liquid mostly use the volumetric method to measure the solubility of gas in liquid. The gas enters the burette from the gas circuit switch through the capillary tube and then pours into the liquid container. The volume of the dissolved gas before and after the experiment is measured by the burette. The change of the pressure difference can be calculated by the height difference between the two mercury surfaces in the burette, ignoring the gas circuit switch and the volume in the capillary, the volume difference measured by the burette before and after the experiment is the volume of the dissolved gas in the liquid, through the gas state equation, The amount of dissolved gas was corrected from the pressure difference before and after the experiment. For th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/02
Inventor 范毓润郭关柱
Owner ZHEJIANG UNIV
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