Trace amount liquid viscosity measuring method and apparatus

A technology of trace liquid and measurement method, applied in the field of viscosity instruments, can solve the problems of unsuitable micro-flow liquid viscosity, high cost of constant temperature bath, large amount of experimental liquid, etc., achieving short measurement period, suitable for miniaturization, and liquid small amount of effect
CN1501061AInactive Publication Date: 2004-06-02INST OF MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF MECHANICS - CHINESE ACAD OF SCI
Publication Date
2004-06-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to micro liquid viscosity measuring method and unit. The present invention measures the viscosity of liquid indirectly via measuring the flow rate-pressure relationship of liquid in micron pipe, and the method is superior to available one, which adopts large amount of test liquid and expensive constant temperature bath. One micro liquid viscosity measuring instrument with small amount of test liquid, simple constant temperature device and short measurement period is provided. The measuring instrument consists of low pressure micro flow experimental apparatus and temperature controller, and has the structure including gas storage, liquid tank, T-pipe, pressure detector, temperature controller, micron pipeline inside the temperature controller, transparent displacement pipe with one end connected to the micron pipeline and the other end communicated to atmosphere via the temperature controller, and optical microscope on the transparent displacement pipe.
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Description

technical field

[0001] The invention relates to a method for measuring the viscosity of a trace liquid, in particular to an instrument for measuring the viscosity of a trace liquid. Background technique

[0002] Viscosity is an important physical characteristic of fluid, which is the degree of viscosity, also known as dynamic viscosity. Viscosity measurement is very closely related to fields such as petrochemical, metallurgical coal and national defense. In these fields, viscosity measurement is an important means to control the production process, realize safe production, improve product quality, save and develop energy. In the medical field, measuring the viscosity of blood and other physiological fluids is a newly developed diagnostic method, especially for cardiovascular diseases, cancer, tumors and other difficult diseases. In scientific fields such as physical chemistry and fluid mechanics, viscosity measurement plays an important role in understanding fluid properti...

Claims

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