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Heat insulation sleeve, rotor and test bench for rotor thermal instability test

A thermal instability, test-bed technology, applied in the testing of mechanical components, testing of machine/structural components, instruments, etc., can solve the problems of rotor helical vibration, vibration amplitude, large rotor vibration, grinding tile, etc. The effect of improving the instability phenomenon, reducing the circumferential temperature difference of the journal, and avoiding the phenomenon of grinding pads

Active Publication Date: 2021-10-29
SHENYANG TURBO MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rotors used in the prior art are prone to large vibrations due to synchronous thermal instability during application, including rotor helical vibration and / or vibration amplitude increase and / or rotor hysteresis
It will not only lead to the application safety of the rotor itself in the application process, but also may cause the radial bearing of the rotor to be rubbed and / or cause excessive temperature due to the increase in the vibration amplitude.
Poor app experience

Method used

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  • Heat insulation sleeve, rotor and test bench for rotor thermal instability test
  • Heat insulation sleeve, rotor and test bench for rotor thermal instability test
  • Heat insulation sleeve, rotor and test bench for rotor thermal instability test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] See attached figure 1 ~ attached Figure 5 , The heat insulation sleeve provided by Embodiment 1 of the present invention includes a cylindrical side wall 20 , a first inner protrusion 22 and a second inner protrusion 23 . The first inner protrusion 22 is disposed in one axial end of the cylindrical sidewall 20 and protrudes toward the radial center of the cylindrical sidewall 20 . The second inner protrusion 23 is disposed in the other axial end of the cylindrical side wall 20 and protrudes toward the radial center of the cylindrical side wall 20 . The heat insulation sleeve 3 can tightly fit with the rotating shaft to be loaded through the first convex inner protrusion 22 and the second inner protrusion 23. When the heat insulating sleeve 3 is matched with the rotating shaft to be loaded, the cylindrical side wall 20 will There is still a gap 25 between the inner wall of the part other than the second inner protrusion 23 and the rotating shaft to be loaded.

[0041...

Embodiment 2

[0047] See attached figure 1 ~ attached Figure 5 , The rotor with a heat insulating sleeve provided in Embodiment 2 of the present invention includes a rotating shaft 1 and a heat insulating sleeve 3 . The heat insulating sleeve 3 is arranged at the journal of the non-driving side of the rotating shaft 1 .

[0048] The invention provides that the heat insulation sleeve is applied to the rotor and the test bench provided by the invention is used for the thermal instability test of the rotor, which can convert the original connection form of the load bearing directly connected to the rotor to the connection between the load bearing and the heat insulation sleeve form, in this case, the heat insulation sleeve is tightly fitted with the rotor shaft through the first inner protrusion and the second inner protrusion, therefore, during the test, the gap between the heat insulation sleeve and the rotor shaft can be avoided. produce relative rotation. In addition, since after the r...

Embodiment 3

[0050] See attached figure 1 ~ attached Figure 5 , the test bench for rotor thermal instability test provided by the third embodiment of the present invention is characterized in that it includes a frame, a first loading bearing 26 and a second loading bearing 27 . The first loading bearing 26 and the second loading bearing 27 are arranged on the frame respectively, so that the first loading bearing 26 is centered with the second loading bearing 27, and the center circle of the first loading bearing 26 is aligned with the second loading bearing 27. The centers of the circles are on the same horizontal line. The rotors with heat insulating sleeves are respectively arranged in the first loading bearing 26 and the second loading bearing 27 through the heat insulating sleeves 3 .

[0051] The reference signs in the drawings of this embodiment are: 1-rotor; 2-deflector; 3-heat insulation sleeve; 4-temperature measuring probe; 5-temperature measuring probe; 6-balance plate, used ...

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Abstract

The invention discloses a heat insulating sleeve, a rotor and a test bench for rotor thermal instability test, belonging to the technical field of rotor performance research. The heat insulation sleeve includes a cylindrical side wall, a first inner protrusion and a second inner protrusion. The first inner protrusion is arranged in one axial end of the cylindrical side wall and protrudes toward the radial center of the cylindrical side wall. , the second inner protrusion is arranged in the other axial end of the cylindrical side wall, and protrudes toward the radial center of the cylindrical side wall. Matching, after the heat insulating sleeve is matched with the rotating shaft to be loaded, there is still a gap between the inner wall of the part of the cylindrical side wall other than the first inner protrusion and the second inner protrusion and the rotating shaft to be loaded. The rotor includes a rotating shaft and a heat insulating sleeve, and the heat insulating sleeve is arranged at the non-driving side journal of the rotating shaft. The test rig can be used for thermal instability testing of the rotor. The rotor after applying the heat shield can reduce the amplitude. The test stand can be used to verify the performance of the rotor.

Description

technical field [0001] The invention relates to the technical field of rotor performance research, in particular to a thermal insulation sleeve, a rotor and a test bench for thermal instability tests of the rotor. Background technique [0002] The rotors used in the prior art tend to vibrate greatly due to synchronous thermal instability during application, including rotor helical vibration and / or increased vibration amplitude and / or rotor hysteresis. It will not only lead to the application safety of the rotor itself in the application process, but also may cause the radial bearing of the rotor to be rubbed and / or cause excessive temperature of the tile due to the increase of the vibration amplitude. The application experience is poor. Contents of the invention [0003] In view of this, the present invention provides a heat insulation sleeve, a rotor and a test bench for rotor thermal instability test, wherein the rotor with the heat insulation sleeve can reduce the larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 胡永肖忠会杨树华孟继纲姚洁李凯华崔天龙
Owner SHENYANG TURBO MASCH CORP