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Rheometer having a gas bearing

A gas bearing and rheometer technology, applied in the direction of air cushion bearings, bearings, bearing components, etc., can solve the problems of unusable rotors, surface defects, rotor geometric deviations, etc., achieve good adjustability, and suppress inaccurate working characteristics Effect

Active Publication Date: 2018-04-17
THERMO ELECTRON KARLSRUHE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This additional coating process increases manufacturing costs and there is a danger that in the case of poor coating, geometrical deviations or surface defects can occur on the rotor, rendering the rotor unusable

Method used

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  • Rheometer having a gas bearing
  • Rheometer having a gas bearing
  • Rheometer having a gas bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 It is a schematic vertical cross-sectional view of the gas bearing 10 of the generally vertical shaft 11 of the rheometer. Such as figure 1 As shown by the double arrow A in , the shaft is driven by rotation. A first bearing body (rotor) 12 is provided on the shaft body. The rotor is fixedly connected to the shaft body 11 and has two spherical main parts 21, 22 each in the form of a spherical layer, wherein the main parts 21, 22 are so along the shaft body. 11 are arranged axially such that these body parts abut each other with their smaller flat surfaces.

[0043] The shaft body 11 is designed as a hollow shaft and has an axial channel 15 extending in the longitudinal direction of the shaft body 11 , which communicates with the substantially radially opposite shaft body 11 via a radial hole 17 formed in the wall of the shaft body 11 . The extended connecting channel 16 connects. The connecting channel 16 extends linearly in the region of the contact surfac...

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PUM

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Abstract

The invention relates to a rheometer having a shaft, which is rotatably supported in a gas bearing. The gas bearing has a first bearing body (rotor) attached to the shaft and a second bearing body (stator), which surrounds the first bearing body (rotor) at a distance, a bearing gap thus being formed. The second bearing body (stator) is composed of a gas-permeable material at least in some sections, and a gas flows through the second bearing body (stator) in such a way that a gas cushion is formed in the bearing gap, by means of which gas cushion the first bearing body (rotor) and the shaft aresupported without contact. According to the invention, the first bearing body (rotor), at least in the regions thereof facing the second bearing body (stator), likewise is composed of a gas-permeablematerial, into which the gas penetrates, the gas forming the preferably stationary gas layer thereof close to the surface because of the dynamic pressure or back-up of the gas.

Description

technical field [0001] The invention relates to a rheometer having a shaft rotatably supported in a gas bearing, wherein the gas bearing has a first bearing body (rotor) mounted on the shaft and a second bearing body (rotor) A bearing body (stator), the second bearing body surrounds the first bearing body (rotor) at intervals in such a manner as to form a bearing gap, wherein the second bearing body (stator) is at least sectionally formed of a gas-permeable material and Gas flows in such a way that an air cushion is formed in the bearing gap, and the first bearing body (rotor) and the shaft body are supported by the air cushion in a non-contact manner. Background technique [0002] Corresponding gas bearings, also known as aerostatic bearings or air bearings, are usually used in rheometers because they enable reliable microstructural analysis at extremely low torques and deformations. [0003] Aerostatic bearings belong to the category of gas or air lubricated bearings. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/14G01N11/16
CPCF16C32/0618F16C32/0625F16C33/16F16C2206/40F16C2370/00G01N11/14G01N11/165F16C32/0614F16C32/0685F16C33/1005H02K5/1677
Inventor W·普拉泽克U·鲍尔
Owner THERMO ELECTRON KARLSRUHE