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Experimental apparatus for determining surface tension coefficient of temperature-variable liquid

A technology of liquid surface tension and experimental device, applied in the field of experimental instruments, can solve the problem of not reflecting the relationship between the liquid surface tension coefficient and the liquid temperature, and achieve the effect of simple structure and simple operation

Inactive Publication Date: 2006-10-11
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Their disadvantage is that they cannot reflect the relationship between the surface tension coefficient of the liquid and the temperature of the liquid

Method used

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  • Experimental apparatus for determining surface tension coefficient of temperature-variable liquid
  • Experimental apparatus for determining surface tension coefficient of temperature-variable liquid

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Experimental program
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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] For the structure of this device see figure 1 , including pressure resistance sensor 4, digital millivolt meter 2, temperature controller 1, semiconductor refrigeration sheet 7, metal utensil 5, suspension ring 16, cooling fan 17, bracket 19 and base 3 and other basic components. Adjusting screw 15 is arranged below the support base 3, in order to adjust the level of base 3, the blister 14 that shows whether base is level is arranged on the base 3 upper surface, support 19 and carrier 9 are fixed on the base 3; Lift the screw 13 and fix the heat dissipation fan 17; fix the heat dissipation aluminum material 8 on the heat dissipation fan 17 with screws; coat the upper and lower sides of the semiconductor refrigeration sheet 7 with thermal conductive silicon grease, and then attach the semiconductor refrigeration sheet 7 to the heat dissipation alu...

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Abstract

The invention relates to a device for testing the surface tension parameter of warm liquid, which comprises a pressure resistance sensor, a digital millivoltmeter, a temperature controller, a semi-conductor refrigerator, a metallic container, a swing ring, a heat emit fan, a support and a base. Wherein, the semi-conductor refrigerator is under the metallic container that containing liquid, which is connected to the temperature controller; the temperature sensor is inserted into said liquid; the support base has adjust bolt and horizontal instruction foam; the support is mounted with a pressure resistance sensor connected to the digital millivoltmeter; the pressure resistance sensor is connected to the swing ring whose bottom surface contacts the liquid surface of metallic container. The invention can set and control the temperature of tested liquid, to detect the surface tension parameter at different temperature, with simple structure and easy operation.

Description

technical field [0001] The invention relates to an experimental instrument, in particular to an experimental instrument for measuring the surface tension coefficient of a variable temperature liquid. Background technique [0002] Due to the action of molecules in the liquid surface layer, it is like a tensioned elastic film, which has a tendency to shrink. This force along the liquid surface and shrinking the liquid surface is called surface tension. It is related to the type of liquid, temperature and other factors. The higher the temperature, the smaller the surface tension coefficient. The study of liquid surface tension has many applications in industry and daily life, such as flotation technology and liquid transportation technology in industrial technology. In physical experiments, methods such as pull-off method and capillary method are generally used to measure the surface tension of liquids. Their disadvantage is that they cannot re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/02B01L7/00
Inventor 谭兴文
Owner SOUTHWEST UNIVERSITY
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