Method and device for measuring viscosity of high-viscosity fluid

Abstract

The invention discloses a method and device for measuring viscosity of a high-viscosity fluid. The device mainly comprises a high-viscosity fluid complete turbulence generation device, a rotating speed and torsion frequency conversion regulator, a temperature sensor, a data acquisition system and the like; a high shear rotor is directly driven by a motor; a high shear force is generated in high-speed rotation, so as to cause the high-viscosity fluid in a shear chamber to be fluidized, thus a complete turbulence is formed; and the viscosity of the high-viscosity fluid refers to a resistance resisting the fluid from deforming when the fluid is under the action of an external force, and seeing from the energy view, the viscosity of the high-viscosity fluid is energy dissipation essentially, namely the temperature rises due to heat generated by a friction action when the fluid is under the action of a high shear acting force, and the energy is dissipated in a heat manner. In the invention, by applying a temperature measuring method, an energy dissipation value of the viscosity of the high-viscosity fluid is measured and calculated after the high-viscosity fluid forms the complete turbulence in the high shear generation device; and an effective viscosity value of the high-viscosity fluid is further calculated by combining with other fluid dynamics parameters.

Description

technical field [0001] The invention relates to high-viscosity fluids, including offset printing inks widely used in the printing industry and the flow of high-viscosity crude oil in the petroleum industry, and in particular to a method and a device for measuring the viscosity of high-viscosity fluids. Background technique [0002] The glue ink widely used in the printing industry and the crude oil mined in the petroleum industry have a very high effective viscosity, usually in the range of tens to hundreds of Pa·s. [0003] Fluid viscosity refers to the resistance of the fluid against the deformation of the ink when it is subjected to external force. The fluid viscosity we usually refer to refers to the frictional resistance between the inner layers of the fluid when the fluid is sheared. From the point of view of energy, the viscosity of fluids, especially high-viscosity fluids, is essentially a kind of energy dissipation, that is, when the high-viscosity fluid is subjecte...

AI Technical Summary

Problems solved by technology

[0002] The effective viscosity of rubber ink widely used in the printing industry and crude oil extracted from the petroleum industry is very high, usually tens to hundreds of Pa s, and it is difficult to measure the effective viscosity when it flows with traditional testing instruments

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