Rotational viscometer with paddle-type rotor and method for measuring particle fluid viscosity

Abstract

The invention discloses a rotational viscometer with a blade-shape motor, and a method of measuring particle fluid viscosity by the rotational viscometer. The rotational viscometer comprises a torque transducer, a support, a hoisting mechanism, a rotating rod, a swivel, a sample chamber, a blade-shape rotor, an experiment platform, a signal line and a control mechanism, wherein the blade-shape motor is fixed to the swivel, the swivel is connected to the torque transducer through the rotating rod; the torque transducer is disposed in the support of the hoisting mechanism, and the torque transducer and the hoisting mechanism are controlled by the control mechanism. A using method includes that the torque transducer rotates and drives the blade-shape motor to rotate, the blade-shape motor rotates in a particle fluid and is subjected to shearing stress of the particle fluid, torque changes sensed by the torque transducer are transferred to the control mechanism through electric signals, and the viscosity of the particle fluid can be calculated by the measured torque. The rotational viscometer and the method are advantaged by capability of accurately measuring the viscosity of various fluids at room temperature, high precision, good repeatability, high measuring speed, simple structure, low cost, long service lifetime and high production efficiency.

Description

Technical field: [0001] The invention belongs to the technical field of detection, in particular to an instrument capable of measuring particle fluid viscosity and a measuring method. Background technique: [0002] Substances in nature can be divided into four states (or four phases) of solid, liquid, gas and plasma. Among them, liquid gas and plasma are called fluids because they can be deformed without any external force. When the fluid contains a large number of fine solid particles and the flow velocity is large enough, the flow of solid particles is similar to that of fluid, that is, solid particles can be regarded as pseudo-fluid (or quasi-fluid), and together with liquid gas and plasma as a fluid flow problem to deal with. Therefore, the granular fluid system is one of the most common phenomena in nature and industry, which affects human survival and living environment invisibly. With the continuous development of science and technology, the research on granular fl...

AI Technical Summary

Problems solved by technology

At present, the rotor of the main rotational viscometer in China is mainly cylindrical. Put the cylindrical rotor into the granular fluid to rotate. After rotating for a certain period of time, the rotation of the rotor will not be subjected to the shear stress of the granular fluid, so the particle cannot be accurately measured. fluid viscosity

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