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Rotational viscometer based on velocity attenuation

A technology of rotational viscosity and viscometer, which is applied in flow characteristics, measuring devices, instruments, etc. It can solve the problems of large measuring range and achieve the effects of long life, small starting current and small vibration

Inactive Publication Date: 2011-04-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the application of the existing rotational viscometer, the present invention proposes a rotational viscometer based on velocity attenuation, which solves the existing problems of the current velocity attenuation rotational viscometer, and can overcome the traditional torque measurement type and rotational speed measurement rotational viscometer At the same time, it has the advantages of fast speed, high precision and large measuring range, and is suitable for the detection of viscosity values ​​of Newtonian fluids and non-Newtonian fluids.

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  • Rotational viscometer based on velocity attenuation

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Embodiment Construction

[0029] The present invention can be understood more clearly through the specific examples of the present invention given below, but the present invention is not limited thereto.

[0030] The rotational viscometer based on velocity decay, its shape is as follows figure 1 As shown, it consists of a cascaded motor 1, an air bearing 2, a speed sensor 3, a bracket 4, a probe rotor 5, an outer cylinder 6, a calculation and display unit 7, and an air source 8.

[0031] The cascaded motor 1 is composed of two motors in series, wherein the first motor is a synchronous motor with adjustable speed, the second motor is an adjustable speed slotless cylindrical solid rotor asynchronous motor, and the rotor of the second motor is the torque output shaft And supported by the air bearing 2 connected in series, the output torque is used to drive the probe rotor 5 to rotate in the fluid. The measuring probe rotor 5 is likewise supported by the air bearing 2 . The bracket 4 mainly plays a suppo...

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Abstract

The invention relates to a fluid viscosity (rheological property) measuring instrument which comprises a cascading motor (1), an air bearing (2), a velocity sensor (3), a support (4), a measuring head rotor (5), an outer cylinder (6), a calculation and display unit (7) and a gas source (8). The velocity attenuation of the measuring head rotor (5) in the fluid to be measured has the corresponding relation with the viscosity of the fluid to be measured, and the viscosity of the fluid to be measured can be worked out according to the corresponding relation by detecting the rotating speed of the measuring head rotor (5) at any two corresponding moments. The fluid viscosity (rheological property) measuring instrument has the characteristics of wide measurement range, high measurement accuracy, good measurement repeatability, high measurement speed and the like.

Description

technical field [0001] The invention relates to a liquid viscosity (rheological characteristic) measuring instrument, specifically a coaxial cylinder rotational viscometer based on inner cylinder velocity attenuation, which belongs to the field of detection instruments and mechanical engineering. Background technique [0002] Rotational viscometer is a relatively common instrument used to detect the viscosity value of fluids, and is widely used in the detection of viscosity values ​​of Newtonian fluids and non-Newtonian fluids. According to different detection parameters, rotational viscometers can be divided into torque measurement type, rotational speed measurement type, and three types of simultaneous measurement of rotational speed and torque. Simultaneous measurement of rotational speed and torque type rotational viscometers need to measure constantly changing torque and rotational speed at the same time, in the structure There are higher requirements on design and meas...

Claims

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Application Information

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IPC IPC(8): G01N11/14
Inventor 姚英学王洪波周亮陈海兵廖志荣
Owner HARBIN INST OF TECH
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