CN102720761B - Elastic rotor bearing structure - Google Patents
Elastic rotor bearing structure Download PDFInfo
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- CN102720761B CN102720761B CN201210193964.3A CN201210193964A CN102720761B CN 102720761 B CN102720761 B CN 102720761B CN 201210193964 A CN201210193964 A CN 201210193964A CN 102720761 B CN102720761 B CN 102720761B
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- ring
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- steel sheet
- sheet group
- steel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses an elastic rotor bearing structure which comprises an elastic steel sheet set and retainer rings. The elastic steel sheet set comprises a plurality of circular steel sheets gradually decreasing in width, the steel sheets are stacked, the joint of each circular steel sheet is welded, the adjacent circular steel sheets are adhered by high-temperature steel adhesive, weld joints of the circular steel sheets in each tier are angularly and peripherally distributed at equal angular intervals, an outer ring of the steel sheet set and a casing are mounted by means of transition fit, and an inner ring of the steel sheet set and a bearing are mounted by means of interference fit. A face, adjacent to the steel sheet set, of each of the left retainer ring and the right retainer ring is an inner conical face, and the retainer rings and the casing are mounted radially by means of clearance fit, and a gap is axially reserved between the retainer rings and the elastic sheet set. The elastic rotor bearing structure is simple in structure, convenient for performance parameter adjustment, low in cost, widely applicable, long in service life, high in reliability and suitable for serving as a mechanical elastic bearing for rotors. The elastic rotor bearing structure not only has wide range of bearing rigidity, but also is high in vibration damping, and integrates elastic bearing and vibration damping functions.
Description
Technical field
The invention belongs to rotor mechanical structural design field, relate to a kind of elastic rotor supporting structure, specifically, refer to a kind of structure for rotor dynamic mechanical supporting and vibration damping.
Background technique
In rotor mechanical design, all use yielding support and vibration damping equipment, to ensure that rotor normally works.In design, yielding support and vibration-damping function are realized by single-minded component at present, and by certain assembly relation, are combined to form rotor-bearing system.Its shortcoming is: number of components is many, complex structure, and manufacture cost is high, and system failure rate is high.For improving above-mentioned design deficiency, the present invention proposes a kind of elastic rotor supporting structure, related supporting structure, integrate yielding support and damping vibration attenuation function, when guaranteed performance requires, its performance can change by adjusting structural parameter, and has larger adjustable extent.Meanwhile, reduce system zero number of packages, reduced costs and rate of fault, there is good versatility and construction value.
Summary of the invention
For the shortcoming and defect of prior art, the object of the present invention is to provide a kind of elastic rotor supporting structure for rotor-support-foundation system supporting and vibration damping, this elastic rotor supporting structure not only can provide the support stiffness having a wide reach, and itself there is stronger damping vibration attenuation function, yielding support and vibration-damping function are integrated in one.Described elastic rotor supporting structure comprises elastic steel sheet group and back-up ring, elastic steel sheet group provides yielding support and damping vibration attenuation function, back-up ring, in order to safeguard the working stability of elastic steel sheet group and to stop the direct contact resilient steel disc of high-temperature gas group, ensures its working life.
The technological scheme that the present invention takes for its technical problem of solution is:
A kind of elastic rotor supporting structure, entirety is structure in the form of a ring, comprises elastic steel sheet group and back-up ring, it is characterized in that:
Described elastic steel sheet group is arranged between bearing and casing, and its inner ring and bearing are installed by interference fit, and outer ring and casing are installed by transition fit; Described elastic steel sheet group is stacked together successively by some layers of annular resilient steel ring, and the width of flexible steel ring successively decreases to casing direction successively from bearing, makes the cross section of described elastic steel sheet group be trapezium structure; Between adjacent two layers steel ring, use high temperature steel bonding glue bond; Every one deck steel ring jointing is welded to connect, the weld seam of each layer of steel ring along circumferentially uniformly-spaced angle be uniformly distributed;
Described back-up ring is arranged on elastic steel sheet group both sides, comprise left and right two back-up rings, the outer ring surface of each back-up ring and casing are installed by Spielpassung, and each back-up ring leaves gap in the axial direction and between elastic steel sheet group, and the adjacent side of each back-up ring and elastic steel sheet group is inner conical.
In elastic rotor supporting structure of the present invention, described elastic steel sheet group is arranged between bearing and casing, and inner ring and bearing are installed by interference fit, and outer ring and casing are installed by transition fit; Described back-up ring is arranged on elastic steel sheet group both sides, and outer ring and casing are installed by Spielpassung, axially and between elastic steel sheet group leaves gap, and this gap is space reserved while being out of shape for elastic steel sheet group.
Described elastic steel sheet group is stacked together by some annular resilient steel rings, preferably, each steel ring is rolled and is formed by rectangle steel disc, steel ring jointing welds, position while welding is along circumferentially uniformly-spaced angle distribution, by along the circumferential direction uniformly-spaced angle distribution of weld seam, be the isotropy in order to ensure elastic steel sheet group dynamic property, be beneficial to and keep its kinetic stability; Flexible steel ring width successively decreases to casing direction successively from bearing, makes elastic steel sheet group cross section be trapezium structure, and this feature makes elastic steel sheet group have suitable elasticity, meets the demand of support stiffness; The thickness of every steel ring can be identical can be not identical yet, thin steel ring has less rigidity, thick steel ring has larger rigidity, as required, can mix the steel ring of taking different-thickness, also can use the steel ring of same thickness, play the effect of adjusting elastic steel sheet group rigidity; Between steel ring, use high temperature steel bonding glue bond, prevent from the one hand producing between steel ring relative displacement, ensure the integrity of elastic steel sheet group, on the other hand, high temperature steel bonding glue can provide viscous damping, when elastic steel sheet group generation resiliently deformable, can provide structural damping, two kinds of damping effects are superimposed, and have ensured effect of this resilient supporting unit damping vibration attenuation.
Described back-up ring comprises left and right two back-up rings.Back-up ring and casing are installed by Spielpassung, facilitate structural member to install; The adjacent surface of back-up ring and elastic steel sheet group is inner conical, and and elastic steel sheet group between leave axial clearance, this gap is the elastic steel sheet group headspace in when distortion.Back-up ring prevents that elastic steel sheet group from producing excessive axial displacement on the one hand, on the other hand, prevents the direct contact resilient steel disc of high-temperature gas group, and then the phenomenon that high temperature steel bonding glue lost efficacy occurs.
Preferably, the width between every layer of steel ring differs certain length, plays the effect of adjusting elastic steel sheet group rigidity.
Preferably, elastic rotor supporting structure of the present invention is particularly useful for 0-2-0 rotor structure.
Compared with the existing technology, advantage of the present invention:
1, simple in structure, easily manufactured, cost is low, construction value is higher;
2, performance adjustable extent is wide, and performance is high to structural parameter change sensitivity, and product diversification cost is low;
3, integrate yielding support and damping vibration attenuation function, simplify rotor-support-foundation system structure complexity, design, manufacture cost reduce;
4, reliability is high, life-span assurance coefficient is high, good stability.
Brief description of the drawings
Fig. 1 elastic rotor supporting structure assembling of the present invention schematic diagram;
Fig. 2 elastic rotor supporting structure of the present invention schematic diagram;
Fig. 3 individual layer steel ring flat deployable structure schematic diagram;
Fig. 4 elastic steel sheet group schematic cross-section;
The adjacent steel ring size relationship of Fig. 5 figure.
Embodiment
For making object of the present invention, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Below, by reference to the accompanying drawings, taking 0-2-0 rotor as example, the present invention will be further described.
The invention provides a kind of elastic rotor supporting structure, described elastic rotor supporting structure is arranged on 0-2-0 rotor, rotor left end is gas compressor 1, right-hand member is turbine 2, elastic rotor supporting 5 is arranged between bearing 3 and casing 4, elastic rotor supporting 5 is interference fit with bearing 3, and elastic rotor supporting 5 is transition fit with casing 4.
The structure of described elastic rotor supporting 5 as shown in Figure 2, comprises elastic steel sheet group 8, left back-up ring 701, right back-up ring 702.Each back-up ring inner side is inner conical surface, to comply with the variation tendency of elastic steel sheet group external frame.Elastic steel sheet group 8 is stacked together by some steel rings 801, the width of every layer of steel ring 801 successively decreases to casing 4 directions successively from bearing 3, make the cross section of elastic steel sheet group 8 be trapezium structure, this feature makes elastic steel sheet group 8 have suitable elasticity, meets the demand of support stiffness; The structure of steel ring 801 as shown in Figure 3.Steel ring 801 expansion shapes are rectangle 802, roll into steel ring 801, and jointing welds, as shown in weld seam 803.The cross section of elastic steel sheet group, as shown in Figure 4, comprises 4 layers of steel ring as example taking elastic steel sheet group.The weld seam of each layer of steel ring, is along the circumferential direction uniformly-spaced angle and distributes, as shown in weld seam 501-504.Between each layer of steel ring, with high temperature steel bonding glue, 505-507 is bonding.
The rigidity of elastic steel sheet group can realize by the structural parameter of adjusting steel disc, as shown in Figure 5.Taking adjacent two steel discs 804 and 805 as example, steel plate thickness t can be identical, also can be different; Width differs 2h, and h is taken as definite value, so that back-up ring 701,702 inner sides are inner conical surface, and convenient processing; Be taken as definite value with the axial clearance of elastic steel sheet group 8, and both sides equate.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., all should be included within the scope of the present invention.
Claims (5)
1. an elastic rotor supporting structure, entirety is structure ringwise, comprises elastic steel sheet group and back-up ring, it is characterized in that:
Described elastic steel sheet group is arranged between bearing and casing, and its inner ring and bearing are installed by interference fit, and outer ring and casing are installed by transition fit; Described elastic steel sheet group is stacked together successively by some layers of annular resilient steel ring, and the width of flexible steel ring successively decreases to casing direction successively from bearing, makes the cross section of described elastic steel sheet group be trapezium structure; Between adjacent two layers steel ring, use high temperature steel bonding glue bond; Every one deck steel ring jointing is welded to connect, the weld seam of each layer of steel ring along circumferentially uniformly-spaced angle be uniformly distributed;
Described back-up ring is arranged on the axial both sides of elastic steel sheet group, comprise left and right two back-up rings, the outer ring surface of each back-up ring and casing are installed by Spielpassung, and each back-up ring leaves gap in the axial direction and between elastic steel sheet group, and the adjacent side of each back-up ring and elastic steel sheet group is inner conical.
2. elastic rotor supporting structure according to claim 1, is characterized in that, in described elastic steel sheet group, every layer of steel ring rolled and formed by rectangle steel disc.
3. elastic rotor supporting structure according to claim 1 and 2, is characterized in that, described elastic steel sheet group is stacked together by the identical annular resilient steel ring of some layer thicknesses.
4. elastic rotor supporting structure according to claim 1 and 2, is characterized in that, described elastic steel sheet group is stacked together by the different annular resilient steel ring of some layer thicknesses.
5. elastic rotor supporting structure according to claim 4, is characterized in that, the different mixed lapping of annular resilient steel ring of described some layer thicknesses is put together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193964.3A CN102720761B (en) | 2012-06-12 | 2012-06-12 | Elastic rotor bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210193964.3A CN102720761B (en) | 2012-06-12 | 2012-06-12 | Elastic rotor bearing structure |
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| Publication Number | Publication Date |
|---|---|
| CN102720761A CN102720761A (en) | 2012-10-10 |
| CN102720761B true CN102720761B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210193964.3A Active CN102720761B (en) | 2012-06-12 | 2012-06-12 | Elastic rotor bearing structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563732A (en) * | 2004-03-18 | 2005-01-12 | 西安交通大学 | Mechanical bearing flat foil type thrust gas bearing of high speed surbine |
| CN101243262A (en) * | 2005-08-24 | 2008-08-13 | 株式会社Ihi | Damper element of bearing, method of manufacturing damper element, bearing, and gas turbine engine |
| CN201513473U (en) * | 2009-09-17 | 2010-06-23 | 浙江省三门县世泰实业有限公司 | Elastic bearing |
| CN202152796U (en) * | 2011-01-24 | 2012-02-29 | 湖南航翔燃气轮机有限公司 | Elastic supporting structure, bearing supporting structure and gas turbine adopting structures |
| CN202612388U (en) * | 2012-06-12 | 2012-12-19 | 中国科学院工程热物理研究所 | Elastic rotor supporting structure |
-
2012
- 2012-06-12 CN CN201210193964.3A patent/CN102720761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563732A (en) * | 2004-03-18 | 2005-01-12 | 西安交通大学 | Mechanical bearing flat foil type thrust gas bearing of high speed surbine |
| CN101243262A (en) * | 2005-08-24 | 2008-08-13 | 株式会社Ihi | Damper element of bearing, method of manufacturing damper element, bearing, and gas turbine engine |
| CN201513473U (en) * | 2009-09-17 | 2010-06-23 | 浙江省三门县世泰实业有限公司 | Elastic bearing |
| CN202152796U (en) * | 2011-01-24 | 2012-02-29 | 湖南航翔燃气轮机有限公司 | Elastic supporting structure, bearing supporting structure and gas turbine adopting structures |
| CN202612388U (en) * | 2012-06-12 | 2012-12-19 | 中国科学院工程热物理研究所 | Elastic rotor supporting structure |
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| Publication number | Publication date |
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| CN102720761A (en) | 2012-10-10 |
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