WO2014032727A1 - Palier de retenue destiné à recevoir un arbre d'un moteur - Google Patents

Palier de retenue destiné à recevoir un arbre d'un moteur Download PDF

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Publication number
WO2014032727A1
WO2014032727A1 PCT/EP2012/066986 EP2012066986W WO2014032727A1 WO 2014032727 A1 WO2014032727 A1 WO 2014032727A1 EP 2012066986 W EP2012066986 W EP 2012066986W WO 2014032727 A1 WO2014032727 A1 WO 2014032727A1
Authority
WO
WIPO (PCT)
Prior art keywords
support body
housing
shaft
bearing
fishing camp
Prior art date
Application number
PCT/EP2012/066986
Other languages
German (de)
English (en)
Inventor
Felix Nils FEHRES
Winfried RENWANZ
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2012/066986 priority Critical patent/WO2014032727A1/fr
Publication of WO2014032727A1 publication Critical patent/WO2014032727A1/fr

Links

Classifications

    • 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
    • F16C39/00—Relieving load on bearings
    • F16C39/02—Relieving load on bearings using mechanical means
    • 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
    • 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
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown

Definitions

  • the invention relates to a fishing camp for catching a shaft of a machine with at least one a virtual geomet ⁇ ric central axis enclosing the first support body and a radially outside of at least a first support body arranged catcher housing, wherein radial forces of the at least one first support body to the fishing camp housing by means of at least one radial damping element are transferable. Furthermore, the invention relates to a machine with such a backup bearing. For example, bearings are used on machines with active bearings
  • Magnetic bearings are used in which a rotor is held by a magnetic field in suspension. This requires a control that keeps the rotor stable in position. If there is a fault, for example due to the failure of the control or a power failure, the rotating rotor crashes. In order to master this critical situation, catch bearings are used with a slightly larger inner diameter compared to the shaft diameter.
  • a retainer bearing can, for example, be designed as a slide bearing or roller bearing and be partially rigidly mounted in a housing
  • the retainer bearing has a resilient element in the radial direction, and radial damping elements can also be provided for this purpose.
  • a fishing camp for collecting a rotor shaft which has a first, approximately ⁇ approximately annular support body. If the ro- are from door shaft, the rotor shaft comes with rolling bodies in Be ⁇ affecting, which are aligned coaxially to the rotor shaft, thereby rotatably connected to the annular support body. Furthermore, an outer housing is provided, which is arranged radially on the outside of the annular support body and is connected by means of damping elements with the annular support body.
  • the invention has for its object to provide an improved fishing camp.
  • This object is achieved with a fishing camp of the type mentioned above in that axial forces of the at least one first support body to the fishing camp housing by means of at least one Axialdämpfungsiatas are transferable. Furthermore, this object is achieved by a machine with a shaft, a magnetic bearing, by means of which the shaft can be kept rotatably floating, and such, the shaft in the circumferential direction enclosing fishing camp.
  • the at least one radial damping element and / or the at least one ⁇ Axialdämpfungselement can thereby each be designed as Fe ⁇ DER and damper elements.
  • herkömmli ⁇ che springs for fishing camp for example, leaf springs or coil springs made of a plastic, an alloy
  • the at least one radial damping element can absorb in a fall from ⁇ the shaft occurring radial forces steaming, and pass on to the catch bearing housing. By damping the service life rotor is extended, resulting in ge ⁇ ringere tips of the radial forces occurring.
  • At least one Axialdämpfungs ⁇ element is further provided, which absorb in a crash of the shaft occurring axial forces, dampen and can pass on to the fishing camp housing. Because the at least one axial damping element can dampen a possible axial movement of the crashing shaft, the corresponding impact time of the rotor is lengthened with respect to this axial movement. This results in lower peaks of the axial forces occurring or occurring axial loads.
  • the safety bearing according to the invention can therefore reliably control such peaks of the axial forces which are not controllable by conventional safety bearings.
  • the fishing camp according to the invention with almost identical space compared to conventional bearings applications and applications are developed for the hitherto due to high axial peak loads no backup bearings were available.
  • the inventive Fangla ⁇ ger allows for almost identical space compared to conventional bearings a design in favor of increased durability and increased life. Especially for large machines where magnetic bearings and consequently safety bearings are preferably used, can occur in a crash of the wave can not be ignored Axial ⁇ forces.
  • the shaft is bent due ih ⁇ res own weight and mounted on the shaft components, wherein the shaft has approximately in its axial center ei ⁇ NEN downward stomach and have the two axial ends of the shaft upward.
  • axial forces occur there resulting from the fact that the shaft in the bearing is not completely aligned horizontally, but the respective axial ends facing upward. Even when the shaft crashes, these axial forces occur, the tips of which can be reduced according to the invention by the at least one axial damping element of the backup bearing.
  • the axial ⁇ forces are smaller by orders of magnitude than the la ⁇ like radial forces, which corresponds to the weight of the shaft and the components mounted on the shaft during normal operation of the machine.
  • Such large machines are for example electrical Ma ⁇ machines, such as electric motors or generators whose respective rotor is mounted by means of magnetic bearings and bearings and have a power in the megawatt range, in particular a power greater than 10 MW. Also particularly slightest ⁇ tung strong electric machines with performance in the big ⁇ jackix extract of 100 MW belong to such machines. Furthermore, such large machines can be designed as compressors, pumps or turbines, whose respective impeller or paddle wheel is mounted by means of magnetic bearings and backup bearings.
  • the axial damping element can be installed in the intermediate space between the first support body and the fishing bearing housing, wherein the axial damping element can absorb and damp forces which have at least one axial component.
  • This can be, for example, by a unilateral axial arrangement of the first Axialdämpfungsijns Errei ⁇ Chen, wherein the first Axialdämpfungselement is arranged at one of both axial ends of the first support body.
  • the safety bearing according to the invention comprises a battery of two or more in the axial direction juxtaposed first support bodies, and at least one Axialdämpfungselement is provided at one axial end of the battery of the first support bodies.
  • at least one further Axialdämpfungselement be arranged at the opposite axial end of the battery of the first support bodies.
  • the fishing camp housing covers at least one of the first support body in the radial direction at least partially.
  • the fishing camp housing thus covers at least one of the first support body at least partially ⁇ . Due to the overlap in the radial direction and in particular the attachment of the at least one Axialdämpfungsele- ment in the overlapping region of this particularly effective ⁇ fully damped axial forces of that first support body to the fishing camp housing pass.
  • the fishing camp housing on a U-shaped profile, wherein the opening of the U-shaped profile has radially inward to the central axis.
  • the fishing camp housing has approximately the geometric shape of a car tire.
  • This in turn is particularly advantageous in machines in which comparatively large axial forces can occur during operation or when the shaft crashes.
  • At least one of the limbs of the U-shaped profile at least partially covers at least one of the first support bodies in the radial direction.
  • a leg of the U-shaped profile is formed by a removable annular web.
  • Lubricants are checked by the at least one ers ⁇ te carrying body or the lubricant is examined for this purpose.
  • at least one of the radial damping elements and / or at least one of the Axialdämpfungs comprise ⁇ designed as a steel shaft belt.
  • the wavy band should be designed such that it has at least two orders of magnitude, in particular in about three orders of magnitude, greater attenuation compared to conventional leaf or coil springs.
  • the corrugator belt may, for example coated with ductile materials, particularly plastics and polymer plastics, can be used.
  • the at least one first support body of an art Fabric, an alloy and / or a metal include steel and copper alloys, in particular bronze. Since the at least preferably a first bearing body in such a way out from ⁇ that it can absorb a large part of the kinetic energy of the falling wave, it is advantageous if the at least one first support body can absorb comparatively ho ⁇ he energies at low deformations.
  • an embodiment of the at least one first support body in a sandwich arrangement which has at least two spatial areas made of different Mate ⁇ materials.
  • steel and a plastic can be combined to form such an arrangement, in particular by in each case a corresponding material layer or by a plastic component coated with steel component.
  • the fishing camp on at least a second support body, which is arranged concentrically to the central axis and radially inwardly of at least a first support body, wherein the fishing camp comprises rolling bodies, which between the at least one first support body and the at least one second support body are arranged.
  • the at least one first support body By the at least one first support body, the at least one second support body and arranged therebetween
  • the fishing camp is thus designed as a rolling bearing.
  • the at least one first supporting body and said at least ⁇ a second support body are formed such that the Rolling bodies are movable in between about the central axis and the at least one second support body is rotatable relative to the at least one first support body, wherein radial and axial forces of the at least one second support body to the at least one first support body are transferable.
  • spherical rolling body han ⁇ it delt by a ball bearing.
  • Other geometries of rolling elements or rolling elements can be used, as they are well known.
  • At least one second support body and / or the rolling bodies as for the at least one first support body, so that at least one of the second support bodies can also be made of the aforementioned materials, in particular with the aforementioned material properties.
  • At least one of the radial damping elements and / or at least one of the axial damping elements comprises a squeeze oil damper.
  • a squeeze oil damper is arranged radially or axially between the at least one first supporting body and the fishing-bearing housing for damping radial or axial forces and permits good damping of axial or radial forces generated by the at least one first support body are directed to the safety bearing housing.
  • lower peaks occur the ⁇ ser forces and vibrations can be effectively sup- pressed.
  • a crimping oil damper has two sealing rings, in particular O-rings or labyrinth seals, between which an oil film is enclosed.
  • damping elements permit a "floating" suspension of the at least one first support body and have particularly advantageous damping properties.
  • the Quetschöldämpfer can be combined with other conventional spring or spring damping elements, for example, from one of the aforementioned materials, in particular with the aforementioned material properties. Possible is a use in a fishing camp, which either as
  • Plain bearing or as a rolling bearing with the above-mentioned rolling elements and at least one second support body is executed.
  • Quetschöldämpfers can be used for the use of such Quetschöldämpfers.
  • Bearing housing and / or the at least one first Tragekör ⁇ by, for example, have an annular groove.
  • FIG. 1 shows a fishing camp according to the prior art.
  • the fishing camp has a fishing camp housing 2, which is arranged in the circumferential direction about a virtual geometric center axis 7 ⁇ .
  • a first support body 1 Radially inside the fishing camp housing 2, a first support body 1 is arranged, wherein the first support body 1 is connected to the fishing camp housing 2 by means of a radial damping element 3, which can dampen radial forces from the first support body 1 and transmitted to the fishing camp housing 2.
  • the fishing camp serves to catch a not belonging to the fishing camp shaft 6, which is held for example by a magnetic bearing floating and which thus does not touch the fishing camp in normal operation.
  • the shaft 6 falls on the first support body 1, so that radial forces acting on the first support body 1, which are attenuated via the radial damping element 3 to the Fanglagerge ⁇ housing 2 transferable.
  • Figure 2 shows a first embodiment of the invention shown SEN safety bearing.
  • the fishing camp has a first support body
  • the first support body 1 can axial forces acting on it by means of an Axialdämpfungsele- mentes 4, which is arranged only at one of the axial ends of the first support body 1, to the fishing camp housing
  • the axial damping element 4 can pass on a radial Kraftkom ⁇ component to the fishing camp 2 housing.
  • FIG. 3 shows a second embodiment of the invention shown SEN safety bearing.
  • the fishing camp has a first support body 1, which includes a virtual geometric center axis 7 ⁇ .
  • a catch bearing housing 2 is arranged, wherein the fishing camp housing 2 has a U-shaped profile, the opening points radially inward to the central axis.
  • the backup bearing housing 2 partially covers the first support body 1 in the radial direction, wherein the first support body 1 rests on the fishing camp housing 2 at one of its axial ends in the axial direction.
  • an axial damping element 4 is provided, by means of which Axial forces acting from the first support body 1 in the direction of the Axialdämpfungsiatas 4, damped and can be passed to the Fangla ⁇ gergephaseuse 2.
  • a unilateral axial arrangement of the axial damping element 4 is realized.
  • a Rad ⁇ aldämpfungselement 3 is provided.
  • Figure 4 shows a modification of the second embodiment, wherein like reference numerals denote like in Figure 4 like objects.
  • the modification consists in that the first support body 1 is now designed in two pieces and each of the two first support body 1 with a separate Radialdämp- tion element 3 can derive radial forces to the fishing camp 2 housing ⁇ damped.
  • this modified safety bearing on two second support body 8 which are arranged concentrically to the central axis 7 and radially inward on the two first Tra- bodies 1.
  • rolling elements 9 are pre ⁇ see, which are arranged between the respective first support body 1 and the respective second support body 8, so that this modification of the backup bearing is designed as a rolling bearing.
  • FIG. 5 shows a third embodiment of the invention shown SEN safety bearing.
  • the fishing camp has a first support body 1, which includes a virtual geometric center axis 7 ⁇ .
  • a catch bearing housing 2 Radially outside of the first support body 1, a catch bearing housing 2 is arranged.
  • the fishing camp housing 2 has a U-shaped profile, the opening points radially inward, wherein a leg of the U-shaped profile is formed by a removable annular ridge 5. Act radial forces on the first support body 1, he can these by means of a radial damping element 3, which dampens the radial forces, on the fishing camp 2 housing goge ⁇ ben.
  • Figure 6 shows a modification of the third embodiment, wherein the modified fishing camp similar to that in Figure 5 is now designed as a rolling bearing.
  • the invention relates to a fishing camp for ⁇ catching a shaft of a machine with at least one virtual geometric center axis enclosing first Tra ⁇ body and a radially outside of at least a first support body arranged Fanglagergetude, wherein radial forces of the at least one first support body to the fishing camp by housing at least one radial damping element are transferable.
  • the invention relates to a machine with such a backup bearing. In order to provide an improved safety bearing is available, it is proposed that axial forces of the at least one first supporting body to the catch bearing housing by means of at least one Axialdämpfungsele ⁇ mentes are transferable.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

L'invention concerne un palier de retenue destiné à recevoir un arbre (6) d'un moteur. Ledit palier est pourvu d'au moins un premier corps de support (1) entourant un axe médian géométrique virtuel (7) et d'un logement de palier de retenue (2) disposé radialement à l'extérieur sur au moins un premier corps de support (1), des forces radiales pouvant être transférées du ou des premiers corps de support (1) sur le logement de palier de retenue (2) au moyen d'au moins un élément d'amortissement radial (3). L'invention concerne par ailleurs un moteur pourvu d'un palier de retenue de ce type. L'invention vise à mettre à disposition un palier de retenue amélioré. A cet effet, les forces axiales peuvent être transférées du ou des premiers corps de support (1) sur le logement de palier de retenue (2) au moyen d'au moins un élément d'amortissement axial (4).
PCT/EP2012/066986 2012-08-31 2012-08-31 Palier de retenue destiné à recevoir un arbre d'un moteur WO2014032727A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/066986 WO2014032727A1 (fr) 2012-08-31 2012-08-31 Palier de retenue destiné à recevoir un arbre d'un moteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/066986 WO2014032727A1 (fr) 2012-08-31 2012-08-31 Palier de retenue destiné à recevoir un arbre d'un moteur

Publications (1)

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WO2014032727A1 true WO2014032727A1 (fr) 2014-03-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016220196A1 (de) 2015-11-18 2017-05-18 Schaeffler Technologies AG & Co. KG Fanglagersystem
DE102017208128A1 (de) * 2017-05-15 2018-11-15 Man Diesel & Turbo Se Kompressor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0287120U (fr) * 1989-09-19 1990-07-10
US5752774A (en) * 1996-10-22 1998-05-19 Mohawk Innovative Technology, Inc. Zero clearance auxiliary bearing for providing rotor shock tolerance
DE102009031887A1 (de) 2009-07-06 2011-01-13 Siemens Aktiengesellschaft Fanglager zum Auffangen einer Rotorwelle einer Maschine
US20110085753A1 (en) * 2009-10-09 2011-04-14 Dresser-Rand Company Auxiliary bearing system with oil ring for magnetically supported rotor system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0287120U (fr) * 1989-09-19 1990-07-10
US5752774A (en) * 1996-10-22 1998-05-19 Mohawk Innovative Technology, Inc. Zero clearance auxiliary bearing for providing rotor shock tolerance
DE102009031887A1 (de) 2009-07-06 2011-01-13 Siemens Aktiengesellschaft Fanglager zum Auffangen einer Rotorwelle einer Maschine
US20110085753A1 (en) * 2009-10-09 2011-04-14 Dresser-Rand Company Auxiliary bearing system with oil ring for magnetically supported rotor system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016220196A1 (de) 2015-11-18 2017-05-18 Schaeffler Technologies AG & Co. KG Fanglagersystem
DE102016220196B4 (de) 2015-11-18 2021-12-09 Schaeffler Technologies AG & Co. KG Fanglagersystem
DE102017208128A1 (de) * 2017-05-15 2018-11-15 Man Diesel & Turbo Se Kompressor
US10690140B2 (en) 2017-05-15 2020-06-23 Man Energy Solutions Se Compressor

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