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EP1862740B1 - Paroi de chambre de combustion - Google Patents

Paroi de chambre de combustion Download PDF

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Publication number
EP1862740B1
EP1862740B1 EP06011276.0A EP06011276A EP1862740B1 EP 1862740 B1 EP1862740 B1 EP 1862740B1 EP 06011276 A EP06011276 A EP 06011276A EP 1862740 B1 EP1862740 B1 EP 1862740B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
spring
chamber wall
support structure
side facing
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP06011276.0A
Other languages
German (de)
English (en)
Other versions
EP1862740A1 (fr
Inventor
Milan Schmahl
Marc Tertilt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Priority to EP06011276.0A priority Critical patent/EP1862740B1/fr
Priority to EP07726475A priority patent/EP2021695A1/fr
Priority to CN2007800203112A priority patent/CN101460783B/zh
Priority to RU2008152071/06A priority patent/RU2437034C2/ru
Priority to US12/227,448 priority patent/US8069670B2/en
Priority to PCT/EP2007/051717 priority patent/WO2007137883A1/fr
Publication of EP1862740A1 publication Critical patent/EP1862740A1/fr
Application granted granted Critical
Publication of EP1862740B1 publication Critical patent/EP1862740B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/14—Supports for linings
    • F27D1/141—Anchors therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/04—Supports for linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/007—Continuous combustion chambers using liquid or gaseous fuel constructed mainly of ceramic components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/60—Support structures; Attaching or mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00005—Preventing fatigue failures or reducing mechanical stress in gas turbine components

Definitions

  • the invention relates to a combustion chamber wall with a combustion chamber comprising a support structure with a number of heat shields, which are fastened to the support structure with a fastening means, wherein the fastening means comprises a spring device.
  • the combustion chamber of a gas turbine is exposed to special loads, for example hot gases or vibrations.
  • loads for example hot gases or vibrations.
  • heat shields are mounted on the support structure, which protects the support structure from the hot gases and other loads.
  • Heat shields in a combustion chamber are attached to the support structure with a screw.
  • plate spring packs are used for mounting so-called plate spring packs.
  • Metallic heat shield plates are fastened centrally with the plate springs.
  • the disc spring assembly consists of a sleeve and arranged in the sleeve disc springs. These have on the inside a continuous axial hole.
  • the plate spring pack have at the axial hole partially on a thread.
  • the screw is screwed into this axial hole.
  • On the outside of the cup spring package so on the sleeve an external thread is attached. With this the cup spring package is screwed into the support structure.
  • a recess with a matching internal thread is provided in the support structure.
  • the screw head is now arranged in or on the heat shield.
  • the heat shield is attached to the support structure.
  • the screw may be such that it is screwed through the screwed in the support structure Diaphragm spring packet protrudes and extends even further into the recess of the support structure.
  • the sleeve In the direction of the combustion chamber, the sleeve has a fixed lid, which may also have an axial hole for receiving the screw. The lid is a part of the sleeve, so to speak. Thus, the disc springs do not fall into the combustion chamber.
  • the disc springs of the plate spring package are secured on the side toward the support structure with a retaining ring against falling out. Between safety ring and spring is further arranged a pressure plate.
  • the safety ring has often been solved in the past and or is broken. If, for example, a heat shield has to be dismantled / installed due to cracks or fractures, the springs and the pressure plate itself can fall into the combustion chamber if the safety ring is broken. These then have to be effortfully searched for and removed again. Also, the assembly of new plate spring package is difficult because the back of the support structure in some places, for. at the hub is not accessible from the outside.
  • the object of the invention is to specify a combustion chamber wall with a support structure and with heat shields which are fastened to the support structure, the attachment of these heat shields to the support structure being particularly service-friendly and easy to assemble / disassemble.
  • a combustion chamber wall having a combustion chamber comprising a support structure with a number of heat shields which are fastened to the support structure by a fastening means, and wherein the fastening means comprises a spring device, and wherein the spring device is firmly connected to the support structure, wherein the spring device consists at least of a spring mounted in a shell, wherein the shell has an external thread, wherein the spring is secured against falling out on the side facing away from the combustion chamber by a first captive, and wherein the spring device inside an axial hole for receiving having the fastener, and wherein the spring is secured by a second captive on the side facing the combustion chamber against falling out, wherein on the side facing the combustion chamber on the spring a locking plate is mounted, wherein on the combustion chamber side facing the locking plate a disc is attached, wherein the disc has a supporting external thread, wherein the external thread as well as the shell in the corresponding inner casing of the support structure can be screwed, so that the spring device on the side facing
  • the spring device according to the invention therefore consists of a spring, for example disc spring which is mounted in a shell with external thread.
  • the spring device has an axial hole on the inside. This is due to uniform load distribution mostly centered and is for the Recording the fastener, such as a screw, thought.
  • the fastening means such as the screw
  • the heat shield is attached to the support structure, for example, in which the Schaub head is mounted in or on the heat shield.
  • the spring device is firmly connected to the support structure.
  • a first captive securing device is now attached, which secures the spring in the sheath against falling out in the direction of the supporting structure. This can for example be a kind of cover.
  • This is now designed such that it can be expanded in the direction of the combustion chamber.
  • a locking plate is attached to the side facing the combustion chamber on the spring and a disc which has an external thread, wherein the external thread, like the shell in the corresponding internal thread of the support structure is screwed, so that the spring device on the combustion chamber side facing is expandable.
  • the at least one spring is a plate spring. This is advantageous because disc springs can absorb very large forces in comparison with other springs in a small installation space. Furthermore, these can achieve an arbitrarily variable column length by assembling a plurality of disc springs. Achieve correct dimensioning Disc springs with dynamic load also a long service life.
  • the first captive is a pressure plate and / or attached to the inside of the shell edge.
  • the springs in particular the disc springs can rest. Thus, they can not fall into the combustion chamber.
  • the risk of breakage e.g. significantly reduced during disassembly / assembly of a heat shield.
  • the pressure plate is therefore advantageously mounted between the edge and spring in the shell. This also increases the contact surface of the springs. This allows the springs to absorb the load largely constant. This can increase the life of the springs.
  • the pressure plate has an internal thread for fastening the fastening means.
  • This can be advantageously designed as a supporting internal thread, in which the fastening means is attached.
  • the shell has recesses on the side facing the combustion chamber.
  • the projection of the pressure plate is arranged. This achieves a better connection of the two elements and also secures the pressure plate against misalignment.
  • the shell is a sleeve.
  • This is preferably made of metal or metallic base material or other heat-resistant material.
  • the sleeve is preferably such that it allows low strains due to heat. This is the case, for example, with metal / metallic base material.
  • a locking plate is mounted on the spring.
  • the safety plate can be arranged both in the shell on the spring or outside on the spring.
  • the safety sheet can be designed such that a part of the safety sheet is arranged in and part of the safety sheet outside the casing.
  • the locking plate with the shell is firmly connected by the locking plate on the outside has at least one attachment.
  • This attachment is arranged for example in the recesses of the shell.
  • the safety plate is firmly connected to the shell.
  • the safety plate is arranged dejustierêt.
  • this protects the spring from misalignment. This in turn increases the life of the spring.
  • the locking plate on the inside has at least one structure. This serves for further attachment of the locking plate.
  • At least one tooth is applied to the securing plate on the outer edge on the side facing the combustion chamber. If there are several teeth, these are applied evenly over the entire outer edge.
  • at least one bead is embossed on the securing plate on the outer edge on the side facing the combustion chamber.
  • the disc has at least one inside recess.
  • the structure of the safety plate is arranged.
  • the disc is additionally secured against misalignment.
  • the disc has an external thread.
  • the external thread can be configured as a supporting external thread.
  • the screw-in disc also offers the advantage of saving the reworking on the so-called plate pin to adapt the plate to the support structure by the spring device can be adjusted individually in height.
  • the fastening means is a screw.
  • the spring device for fixing a heat shield in the support structure is arranged.
  • a corresponding recess with a corresponding internal thread is to be mounted in the support structure.
  • the pressure plate has at least one projection. With this a better attachment of the pressure plate in the envelope is possible.
  • FIG. 1 shows a disc spring package 5 according to the prior art. This has on the inside in the middle of an axial hole 11 which can receive a screw 10. At the screw head of the heat shield to be attached (not shown) is arranged.
  • the cup spring package 5 has a sleeve 2 with an external thread 14. This sleeve is screwed into the support structure 18 with the corresponding internal thread.
  • a pressure plate 6 and one or more disc springs 4 are attached in the sleeve 2.
  • the pressure plate 6 has an internal thread 16 into which the thread 12 of the screw 10 can be screwed. So that they do not fall into the support structure 18, a releasable safety ring 8 is attached to the side facing away from the combustion chamber 15 side.
  • a closure lid 9 is also firmly attached to the sleeve 2 with the axial hole 11.
  • the closure lid 9 is a part of the sleeve 2 itself.
  • the cup spring package 5 can not open to the combustion chamber 15 out.
  • the plate spring package 5 In a breakage of the safety ring 8 in, for example, the disassembly / assembly of a heat shield to be replaced therefore the plate spring package 5 must be dismantled from the support structure side 18, which, however, requires a lot of time. Otherwise you can Safety ring 8, plate spring 4 or parts of the sleeve 2 fall into the combustion chamber. Since these cause great damage in the combustion chamber 15, they must be consuming sought and removed.
  • FIG. 2 and 3 show a spring device according to the invention.
  • the here essentially round spring device designed here with plate spring 24 as a spring, to the interior of the combustion chamber 15 can be removed.
  • the spring device preferably has an axial hole 34 in the center on the inside.
  • the spring device consists of a shell designed as a sleeve 20. This has an external thread 32 which is screwed into the corresponding internal thread of the support structure 18. Furthermore, the sleeve 20 on the side facing the combustion chamber 15 has recesses 40 and on the side facing away from the combustion chamber 15 an edge 33. In this sleeve now a round pressure plate 22 is inserted, in such a way that they on the edge 33 of the sleeve 20th rests. The pressure plate 22 has on the outside two but at least one projection 42. These projections 42 are inserted into the recess 40 of the sleeve 20. This achieves a better durability of the pressure plate 22 on the other hand a security against rotation of the pressure plate 22.
  • an internal thread 27 is installed, which is designed here as a supporting internal thread 27.
  • the fastener is attached to the support structure 18.
  • the heat shield is mounted (not shown).
  • the spring On the pressure plate 22 in the sleeve 20 is now the spring, here the plate spring 24 or disc springs 24 are arranged.
  • a safety plate 26 On the disc springs 24, a safety plate 26 is now arranged. In this case, the safety plate 26 can still be arranged in the sleeve 20 or even outside the sleeve 20. This has an attachment 44 on the outer edge. This Attachment 44 is inserted into the recess 40 of the sleeve 20.
  • this article 44 provides better cohesion of the two components safety plate 26 and disc springs 24.
  • a disc 28 is arranged on the safety plate 26 . This has on the inside recesses 48, in which the structure 46 of the safety plate 26 is inserted. This also serves as a security against rotation or misalignment and also calls for better cohesion of the components disc 28 and safety plate 26.
  • the disc 28 has a supporting external thread 30. The external thread is, as already the sleeve 20 screwed into the corresponding internal thread of the support structure 18. For better screwing and unscrewing the disc may be provided with a slot 50.
  • the unscrewable disc 28 has the advantage of saving the reworking on the so-called plate pin for adaptation of the heat shield to the support structure 18 by the spring device can be adjusted individually in height.
  • the expandability is achieved by the shell, which is designed here as a sleeve 20, is now expandable combustion chamber side.
  • FIG. 4 shows various embodiments of the safety plate 26.
  • this may be, for example, a locking plate 26 with teeth 72 or a locking plate 26 with embossed bead 70.
  • a rattle prevents the plate springs 24 and the spring device in the thread. As a result, wear in the thread is prevented by relative movements.
  • the required serviceability is essentially achieved according to the invention by the interchangeability of the combustion chamber side. It is thus compensated for the disadvantage that the disc spring package shown in the prior art on the side facing the combustion chamber is not removable or mountable. Thus, it is avoided that in case of breakage of a heat shield and its de / mounting disc springs and / or the pressure plate fall into the combustion chamber. The spring device can now be exchanged directly with the replacement of the heat shield.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Ceramic Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (16)

  1. Paroi de chambre de combustion ayant une chambre de combustion, comprenant
    une structure (18) porteuse ayant un certain nombre de boucliers thermiques, qui sont fixés à la structure (18) porteuse par un moyen de fixation, le moyen de fixation comprenant un dispositif à ressort,
    caractérisée en ce que
    le dispositif à ressort est relié de manière fixe à la structure (18) porteuse, le dispositif à ressort étant constitué au moins d'un ressort mis dans une gaine, la gaine ayant un filetage (32), le ressort étant empêché de tomber par une sécurisation à la perte en étant empêché de sortir du côté éloigné de la chambre de combustion (15), et le dispositif à ressort ayant, du côté intérieur, un trou (34) axial pour la réception du moyen de fixation, le ressort étant sécurisé en étant empêché de tomber par une deuxième sécurisation vis-à-vis de la perte du côté tourné vers la chambre de combustion (15), une tôle (26) de sécurisation étant mise sur le ressort du côté tourné vers la chambre de combustion (15) et un disque (28) étant mis sur la tôle (26) de sécurisation du côté tourné vers la chambre de combustion (15), le disque (28) ayant un filetage (30) porteur, le filetage (30) comme déjà la gaine pouvant être vissé dans le taraudage correspondant de la structure (18) porteuse, de sorte que le dispositif à ressort peut être démonté du côté tourné vers la chambre de combustion (15).
  2. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant la revendication 1,
    caractérisée en ce que le trou (34) axial est traversant.
  3. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications 1 à 2,
    caractérisée en ce que le dispositif à ressort a une forme circulaire.
  4. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications 1 à 3,
    caractérisée en ce que le au moins un ressort est un ressort (24) à disque.
  5. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications 1 à 4,
    caractérisée en ce que la première sécurisation vis-à-vis de la perte est un plateau (22) d'application d'une pression ou/et une arête (33) mise sur le côté intérieur de la gaine.
  6. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant la revendication 5,
    caractérisée en ce que le plateau (22) d'application d'une pression est mis dans la gaine entre l'arête (33) et le ressort.
  7. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications 5 à 6,
    caractérisée en ce que le plateau (22) d'application d'une pression a au moins une saillie (42).
  8. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications 5 à 7,
    caractérisée en ce que le plateau (22) d'application d'une pression a un taraudage pour la fixation du moyen de fixation.
  9. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que la gaine a des évidements (40) du côté tourné vers la chambre de combustion (15).
  10. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que la gaine est un manchon (20).
  11. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que la tôle (26) de sécurisation est reliée fixement à la gaine par le fait que la tôle (26) de sécurisation a, du côté extérieur, au moins un couronnement (44).
  12. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que la tôle (26) de sécurisation a, du côté intérieur, au moins une saillie (46).
  13. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que, sur la tôle (26) de sécurisation, au moins une dent (72) est mise sur le bord extérieur du côté tourné vers la chambre de combustion (15).
  14. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que, sur la tôle de sécurisation, est imprimée sur le bord au moins une goulotte (70) du côté tourné vers la chambre de combustion (15).
  15. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que le disque (28) a au moins un évidement (48) du côté intérieur.
  16. Paroi de chambre de combustion ayant une chambre de combustion (15) suivant l'une des revendications précédentes,
    caractérisée en ce que le moyen de fixation est un boulon (10).
EP06011276.0A 2006-05-31 2006-05-31 Paroi de chambre de combustion Not-in-force EP1862740B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP06011276.0A EP1862740B1 (fr) 2006-05-31 2006-05-31 Paroi de chambre de combustion
EP07726475A EP2021695A1 (fr) 2006-05-31 2007-02-22 Paroi de chambre de combustion
CN2007800203112A CN101460783B (zh) 2006-05-31 2007-02-22 燃烧室壁
RU2008152071/06A RU2437034C2 (ru) 2006-05-31 2007-02-22 Стенка камеры сгорания и газовая турбина
US12/227,448 US8069670B2 (en) 2006-05-31 2007-02-22 Combustion chamber wall
PCT/EP2007/051717 WO2007137883A1 (fr) 2006-05-31 2007-02-22 Paroi de chambre de combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06011276.0A EP1862740B1 (fr) 2006-05-31 2006-05-31 Paroi de chambre de combustion

Publications (2)

Publication Number Publication Date
EP1862740A1 EP1862740A1 (fr) 2007-12-05
EP1862740B1 true EP1862740B1 (fr) 2015-09-16

Family

ID=37311944

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06011276.0A Not-in-force EP1862740B1 (fr) 2006-05-31 2006-05-31 Paroi de chambre de combustion
EP07726475A Withdrawn EP2021695A1 (fr) 2006-05-31 2007-02-22 Paroi de chambre de combustion

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07726475A Withdrawn EP2021695A1 (fr) 2006-05-31 2007-02-22 Paroi de chambre de combustion

Country Status (5)

Country Link
US (1) US8069670B2 (fr)
EP (2) EP1862740B1 (fr)
CN (1) CN101460783B (fr)
RU (1) RU2437034C2 (fr)
WO (1) WO2007137883A1 (fr)

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EP1398569A1 (fr) * 2002-09-13 2004-03-17 Siemens Aktiengesellschaft Turbine à gaz
US6931855B2 (en) * 2003-05-12 2005-08-23 Siemens Westinghouse Power Corporation Attachment system for coupling combustor liners to a carrier of a turbine combustor
EP1533572A1 (fr) * 2003-11-24 2005-05-25 Siemens Aktiengesellschaft Chambre de combustion pour turbine à gaz et turbine à gaz
EP1533574A1 (fr) * 2003-11-24 2005-05-25 Siemens Aktiengesellschaft Chambre de combustion pour turbine à gaz avec des éléments de revêtement et procédé pour appliquer ou enlever ces éléments

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016211613A1 (de) 2016-06-28 2017-12-28 Siemens Aktiengesellschaft Hitzeschildanordnung einer Brennkammer mit Tellerfederpaket
WO2018001696A1 (fr) 2016-06-28 2018-01-04 Siemens Aktiengesellschaft Ensemble écran thermique d'une chambre de combustion comprenant un groupe de rondelles ressort
CN109312922A (zh) * 2016-06-28 2019-02-05 西门子股份公司 燃烧室的具有盘簧组的热屏蔽组件
RU2708760C1 (ru) * 2016-06-28 2019-12-11 Сименс Акциенгезелльшафт Конструкция теплозащитного экрана камеры сгорания с пакетом тарельчатых пружин
CN109312922B (zh) * 2016-06-28 2020-10-02 西门子股份公司 燃烧室的具有盘簧组的热屏蔽组件
US10989412B2 (en) 2016-06-28 2021-04-27 Siemens Energy Global GmbH & Co. KG Heat shield assembly of a combustion chamber having a disk spring set

Also Published As

Publication number Publication date
RU2008152071A (ru) 2010-07-10
CN101460783A (zh) 2009-06-17
CN101460783B (zh) 2012-01-04
US8069670B2 (en) 2011-12-06
EP2021695A1 (fr) 2009-02-11
US20090205314A1 (en) 2009-08-20
EP1862740A1 (fr) 2007-12-05
RU2437034C2 (ru) 2011-12-20
WO2007137883A1 (fr) 2007-12-06

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