CN103216573B - A kind of method utilizing radoal heating to suppress rotor oscillation - Google Patents
A kind of method utilizing radoal heating to suppress rotor oscillation Download PDFInfo
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- CN103216573B CN103216573B CN201310161995.5A CN201310161995A CN103216573B CN 103216573 B CN103216573 B CN 103216573B CN 201310161995 A CN201310161995 A CN 201310161995A CN 103216573 B CN103216573 B CN 103216573B
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Abstract
The present invention relates to a kind of radiation thermic rotor local thermal bending deformation that utilizes to suppress the method for rotor oscillation.It is characterized in that: the non-equilibrium site first determining rotor, and determine the Local Contraction surface in bending rotor unbalance position and local tensile surface respectively; The Local Contraction surface of non-equilibrium site is heated in rotor-support-foundation system running, utilize rotary rotor surface local absorption radiation heat, adopt cladding technique, radiation-absorbing coating is coated in the Local Contraction surface of rotor unbalance position, to improve the radiation absorptivity of coated rotor local surfaces; When using thermal radiation heating rotor, the local surface temperature of coating raises, and produces temperature difference with not cated rotor surface, makes rotor produce distortion, offsets original rotor unbalance with this, suppress the vibration of rotor.The object of the invention is the vibration in order to suppress rotor-support-foundation system, improving the operation stability of system, and make up the deficiency suppressing vibrotechnique at present.
Description
Technical field
The present invention relates to a kind of method suppressing rotor oscillation, particularly relate to a kind of radiation thermic rotor local thermal bending deformation that utilizes to suppress the method for rotor oscillation.
Background technique
The vibration problem of rotating machinery is the key factor affecting its stable operation, and every profession and trade all has regulation to the vibration of rotor-support-foundation system, requires that running rotor vibrates within the specific limits.But rotating machinery still can produce larger vibration because of a variety of causes in running, thus affects its operation stability.
The method mainly dynamic balancing of current suppression vibration, but even if do strict dynamic balancing to each rotor part, and it is good to install centering, and still stronger vibration may occur during the system cloud gray model of composition, the dynamic balancing before making it was lost efficacy.In addition, the method controlling vibration also comprises employing electromagnetic bearing, controlled squeeze film damper, piezoelectric actuator, marmem regulator etc., but control vibrotechnique also imperfection under many circumstances, as damper usually can lose efficacy, produce serious unstable problem in the supercritical region of rotor; Electromagnetic Control power is smaller, the more difficult control of dynamic property etc.
Summary of the invention
Goal of the invention: in order to suppress the vibration of rotor-support-foundation system, the operation stability of raising system, and make up the deficiency suppressing vibrotechnique at present, the present invention proposes a kind of radiation heat that utilizes and heat the local surfaces running rotor, thus make the distortion of rotor-support-foundation system generation localized heat realize suppressing the method for vibration.
Technical side presses: the present invention is achieved through the following technical solutions:
A kind of method utilizing radoal heating to suppress rotor oscillation, it is characterized in that: first utilize the non-equilibrium site of the influence coefficient method determination rotor of rotor dynamic balancing, size and phase place, and determine the Local Contraction surface in bending rotor unbalance position and local tensile surface respectively; The Local Contraction surface of non-equilibrium site is heated in rotor-support-foundation system running, utilize rotary rotor surface local absorption radiation heat, adopt cladding technique, radiation-absorbing coating is coated in the Local Contraction surface of rotor unbalance position, to improve the radiation absorptivity of coated rotor local surfaces; When using thermal radiation heating rotor, the local surface temperature of coating raises, and produces temperature difference with not cated rotor surface, makes rotor produce distortion, offsets original rotor unbalance with this, suppress the vibration of rotor.
Reflective thermal radiation coating is coated on the surface of former non-coating, when source of radiation carries out radiation, under identical irradiation structure Parameter Conditions, rotor local can be made to form larger temperature difference, accelerate and strengthen thermal distortion, offsetting rotor originally due to the distortion of imbalance generation.
This method can solve the vibration problem that rotor many places produce because of uneven, that is: radiation-absorbing material is coated on the Local Contraction surface of rotor unbalance position, many places, also reflected radiation material can be coated on other surfaces, adopting the source of radiation of a large radiation scope or the source of radiation of multiple little radiation scope to carry out radiation exposure makes rotor local non-equilibrium site produce thermal bending, offset rotor originally due to the distortion that imbalance produces, suppress rotor oscillation.
Advantage and effect: this method can carry out the suppression of unbalanced rotor vibration under non-stop-machine condition, be a kind of completely online method suppressing vibration, greatly reduce cost and the loss of shutdown; And the vibration that many places cause due to rotor unbalance can be processed, raising method utilization efficiency simultaneously; Due to the controllability of radiation, make the service precision of this method very high, suppress vibrating effect remarkable, compensate for the deficiency in current vibration suppression field.
accompanying drawing illustrates:
Fig. 1 is the schematic diagram that radoal heating of the present invention suppresses rotor oscillation.
Mark in figure: 1, source of radiation; 2, local coatings surface; 3, rotor.
mode of execution:
Central scope of the present invention is: first utilize the non-equilibrium site of the influence coefficient method determination rotor of rotor dynamic balancing, size and phase place, and determines the Local Contraction surface in bending rotor unbalance position and local tensile surface respectively; The Local Contraction surface of non-equilibrium site is heated in rotor-support-foundation system running, utilize rotary rotor surface local absorption radiation heat mechanism, adopt cladding technique, radiation-absorbing coating is coated in the Local Contraction surface of rotor unbalance position, to improve the radiation absorptivity of coated rotor local surfaces, when using thermal radiation heating rotor, the local surface temperature of coating raises, temperature difference is produced with not cated rotor surface, rotor is made to produce distortion, offset original rotor unbalance with this, suppress the vibration of rotor.
When rotor-support-foundation system runs, source of radiation produces radius, be radiated at the rotor shaft section surface of coating, due to rotor turns, radius is radiated at the whole circumferential surface of rotor shaft part, but the surface emissivity absorptivity of coating is very high, do not have cated surface emissivity absorptivity very low, the temperature of surface temperature far above other surfaces of coating is just made after such irradiation a period of time, produce temperature difference, form thermal bending, make the Local Contraction surface expanded by heating of original non-equilibrium site, be out of shape gradually, counteract originally due to the distortion of imbalance generation, suppress the vibration of rotor.
In addition, for raising the efficiency further, also reflective thermal radiation coating can be coated in the surface of former non-coating, when source of radiation carries out radiation, under identical irradiation structure Parameter Conditions, rotor local can be made to form larger temperature difference, accelerate and strengthen thermal distortion, offset rotor originally due to the distortion of imbalance generation.
This method also can solve the vibration suppression problem that rotor many places produce under vibration condition because of uneven, radiation-absorbing material can be coated on the Local Contraction surface of rotor unbalance position, many places simultaneously, also reflected radiation material can be coated on other surfaces, adopting the source of radiation of a large radiation scope or the source of radiation of multiple little radiation scope to carry out radiation exposure makes rotor local non-equilibrium site produce thermal bending, offset rotor originally due to the distortion that imbalance produces, suppress rotor oscillation.
Suppose to utilize influence coefficient method determination rotor 3 non-equilibrium site of rotor dynamic balancing for marking the axle center reverse position of 2 positions in figure, namely the axle center reverse position of black part in figure, is exactly the compression position of rotor unbalance.Then adopt cladding technique, radiation-absorbing coating is coated in the Local Contraction surface (i.e. local coatings surface 2) of rotor unbalance position, then the position of source of radiation 1 is adjusted, source of radiation 1 is aimed at the shaft part at 2 places, position, local coatings surface, rotor brings into operation, and open source of radiation, adjustment radiation intensity, heating rotor shaft part surface herein, structure-temperature field system through rotor after a period of time reaches stable state, coating surface and other surfaces produce temperature difference, shaft part is herein expanded, produce thermal distortion, offset rotor originally due to the distortion of imbalance generation, and the Vibration Condition of detection rotor, whether produce a desired effect, if do not reach, then change structure and radiation parameter, continue to repeat said method, until suppress vibration to reach expectation requirement.
In figure, source of radiation 1 can be one or more, and its position is also adjustable, can solve the vibration problem that rotor many places produce because of uneven in this way; Also the surface of white portion in the drawings reflected radiation material can be coated, when source of radiation carries out radiation, as radiation time, scope, emissivity, the coefficient of overall heat transmission, radiation spacing etc. under identical irradiation structure Parameter Conditions, rotor local non-equilibrium site is made to produce thermal bending rapidly, offset rotor originally due to the distortion that imbalance produces, suppress rotor oscillation.
Claims (3)
1. the method utilizing radoal heating to suppress rotor oscillation, it is characterized in that: first utilize the non-equilibrium site of the influence coefficient method determination rotor of rotor dynamic balancing, size and phase place, and determine the Local Contraction surface in bending rotor unbalance position and local tensile surface respectively; The Local Contraction surface of non-equilibrium site is heated in rotor-support-foundation system running, utilize rotary rotor surface local absorption radiation heat, adopt cladding technique, radiation-absorbing coating is coated in the Local Contraction surface of rotor unbalance position, to improve the radiation absorptivity on the rotor local surface of coating; When using thermal radiation heating rotor, the local surface temperature of coating raises, and produces temperature difference with not cated rotor surface, makes rotor produce distortion, offsets original rotor unbalance with this, suppress the vibration of rotor.
2. a kind of method utilizing radoal heating to suppress rotor oscillation according to claim 1, it is characterized in that: reflective thermal radiation coating is coated on the surface of former non-coating, when source of radiation carries out radiation, under identical irradiation structure Parameter Conditions, rotor local can be made to form larger temperature difference, accelerate and strengthen thermal distortion, offsetting rotor originally due to the distortion of imbalance generation.
3. a kind of method utilizing radoal heating to suppress rotor oscillation according to claim 1, it is characterized in that: coat radiation-absorbing material on the Local Contraction surface of rotor unbalance position, many places, also reflected radiation material can be coated on other surfaces, the source of radiation of a large radiation scope or the source of radiation of multiple little radiation scope is adopted to carry out radiation exposure, rotor local non-equilibrium site is made to produce thermal bending, offset rotor originally due to the distortion that imbalance produces, suppress rotor oscillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310161995.5A CN103216573B (en) | 2013-05-06 | 2013-05-06 | A kind of method utilizing radoal heating to suppress rotor oscillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310161995.5A CN103216573B (en) | 2013-05-06 | 2013-05-06 | A kind of method utilizing radoal heating to suppress rotor oscillation |
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| Publication Number | Publication Date |
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| CN103216573A CN103216573A (en) | 2013-07-24 |
| CN103216573B true CN103216573B (en) | 2015-09-23 |
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| CN201310161995.5A Expired - Fee Related CN103216573B (en) | 2013-05-06 | 2013-05-06 | A kind of method utilizing radoal heating to suppress rotor oscillation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3057358A1 (en) * | 2016-10-10 | 2018-04-13 | Airbus Operations (S.A.S.) | DEVICE FOR MEASURING FLIGHT PARAMETERS WITH DEFORMATION OPTICAL SENSORS FITTED BY THE RADOME OF AN AIRCRAFT |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB739579A (en) * | 1953-07-03 | 1955-11-02 | Bbc Brown Boveri & Cie | Thermal regulating device for turbo-generators |
| US3163789A (en) * | 1962-11-02 | 1964-12-29 | Allis Chalmers Mfg Co | Thermally balanced rotor |
| CN101040178A (en) * | 2004-10-06 | 2007-09-19 | 捷契尼卡科学生产企业有限责任公司 | Rotor balancing method and device |
| CN102266881A (en) * | 2011-07-12 | 2011-12-07 | 重庆大学 | Stretching-straightening device for online heating-straightening process of magnesium alloy extrusion material |
-
2013
- 2013-05-06 CN CN201310161995.5A patent/CN103216573B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB739579A (en) * | 1953-07-03 | 1955-11-02 | Bbc Brown Boveri & Cie | Thermal regulating device for turbo-generators |
| US3163789A (en) * | 1962-11-02 | 1964-12-29 | Allis Chalmers Mfg Co | Thermally balanced rotor |
| CN101040178A (en) * | 2004-10-06 | 2007-09-19 | 捷契尼卡科学生产企业有限责任公司 | Rotor balancing method and device |
| CN102266881A (en) * | 2011-07-12 | 2011-12-07 | 重庆大学 | Stretching-straightening device for online heating-straightening process of magnesium alloy extrusion material |
Non-Patent Citations (3)
| Title |
|---|
| 多跨转子系统不平衡动力学匹配;许琦等;《东北大学学报》;20130315;第34卷(第3期);404-407 * |
| 浅谈汽轮机转子直轴的局部加热法;李徹等;《广西电力》;20070228(第1期);27-29 * |
| 调相机转子局部加热直轴及轴颈弯曲的研磨;何建清;《四川电力技术》;19900630(第3期);21-27 * |
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| CN103216573A (en) | 2013-07-24 |
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