WO2016055355A1 - Système de serrage permettant de précontraindre un tirant d'une turbomachine - Google Patents

Système de serrage permettant de précontraindre un tirant d'une turbomachine Download PDF

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Publication number
WO2016055355A1
WO2016055355A1 PCT/EP2015/072717 EP2015072717W WO2016055355A1 WO 2016055355 A1 WO2016055355 A1 WO 2016055355A1 EP 2015072717 W EP2015072717 W EP 2015072717W WO 2016055355 A1 WO2016055355 A1 WO 2016055355A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
tie rod
tensioning
force
tube
Prior art date
Application number
PCT/EP2015/072717
Other languages
German (de)
English (en)
Inventor
Sascha Dungs
Harald Hoell
Karsten Kolk
Marc Lange
Peter Schröder
Dirk Springborn
Vyacheslav Veitsman
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
Publication of WO2016055355A1 publication Critical patent/WO2016055355A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F04D29/054—Arrangements for joining or assembling shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/648—Mounting; Assembling; Disassembling of axial pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts

Definitions

  • the present invention relates to a clamping system for biasing an access of a flow engine, which has a tensioning pulley or a tensioning tube, as well as additional ⁇ possibly a pressure plate, which serves to bias the tension arm of the power transmission.
  • Gas turbines and other fluid power machines typically include a fixed housing in which a rotatable rotor is disposed. Between the rotatable rotor and the stationary component of the flow engine ver ⁇ runs a flow channel in an axial longitudinal direction, which is provided for the feed with hot gas as a working medium.
  • rotors of a gas turbine are usually subjected to high mechanical and thermal loads for operational reasons. Due to the high temperatures which the working medium has, moreover, the components which are in thermal contact with the rotor are in particular subject to very high thermal stress.
  • a nut is typically placed terminal on the tie rod, which fixes the individual components during clamping and the Tie rod and its component is under tension. After clamping, the individual components are arranged stably by means of press contact, so that they do not move relative to one another in relation to rotational movements taking place when the flow engine is in operation.
  • Tie rod subsequently biased with a jig.
  • the clamping nut can be placed about in this extended state and easier screwed.
  • the individual method steps can also differ according to the tie rod section. If, for example, provided for clamping the turbine portion of a single-shaft gas turbine, a terminal clamp nut, as for example with the same gas turbine for clamping the compressor section can.
  • the prestressing tensioning system not only requires high strength, but also good centering, so that the prestressing forces introduced into the components of the turbomachine are largely uniformly introduced.
  • safe work is required, in which the individual parts of the clamping system in a secure frictional Must be in contact with each other.
  • this has turned out to be a disadvantage in the method known from the prior art, since the prestressing forces applied by the tensioning system could not be introduced into the respective components of the flow combustion engine with sufficient safety. In other words, the frictional connection between the clamping system and the affected parts of the flow engine was insufficient si ⁇ cher to derive the high prestressing forces from the tensioning system in the respective components in a targeted and secure.
  • the tensioning system for pre-tensioning a tie rod can form a sufficiently good adhesion with the respective components of the flow force engine during pretensioning of the tie rod.
  • a clamping system for biasing a tension armature of a flow engine which has a Spannschei ⁇ be or clamping tube, and in addition a pressure plate, which is a biasing of the tie rod first, the clamping plate or the clamping tube facing support surface on ⁇ has, as well as a second support surface, which is opposite the first Ab- support surface, wherein the clamping disc or the clamping tube have a central passage through which the tie rod in a predetermined longitudinal direction, which coincides with the longitudinal direction of the tie rod can be performed, and wherein the second support surface has a Hirth toothing, which can be brought into a surface in Kon ⁇ tact during preloading with a suitable Schmidtth toothing for the introduction of a biasing force in components of the fluid flow engine.
  • a clamping tube for biasing a tie rod of a fluid-power machine having a first force transmitting surface and a second force transmitting surface which is disposed on one of the first force transmitting surface opposite ⁇ lying surface, the clamping tube having a central passageway by which the tie rod in a predetermined longitudinal direction, which coincides with the longitudinal extension direction of the tie rod, out who ⁇ can, and wherein the second force transmission surface has a Hirth toothing when preloading with a suitable Schmidthirth toothing for introducing a biasing force can be brought into contact surface in components of the flow engine.
  • the idea underlying the invention is initially to be seen in providing a pressure plate with Hirth toothing on its second support surface, which faces the components of the flow engine during clamping. Due to the Hirth toothing results between pressure plate and the corresponding components of the flow engine, which have a suitable Gegenhirth toothing, both a suitable centering and at the same time a good surface contact, which is secured against rotation. As a result, on the one hand, a sufficiently secure frictional connection between the pressure plate and the components of the flow engine can be achieved, but at the same time a displacement or slipping of the pressure plate can be prevented.
  • the Hirth toothing of the pressure plate or of the tensioning tube is intended to engage with a suitable counterhirth toothing of the respective components of the flow force machine that are acted upon by a biasing force.
  • the pressure plate and the tension tube is subjected to a biasing force parallel to the axial direction of the tie rod.
  • this biasing force is imparted by a tensioning pulley or tensioning tube, which is also applied to the tensioning rod.
  • the tensioning disk or the tensioning tube are applied to this tensioning anchor along a predetermined longitudinal direction, which is identical to the longitudinal direction of extension of the tensioning anchorage.
  • clamping means which allow to apply a biasing force to pressurize the pressure plate or provided with a Hirth toothing tensioning tube with the corresponding biasing force.
  • the passage of the clamping disc is provided with an internal thread in the predetermined longitudinal direction of the tie rod, wherein in addition a force transmission section is summarized over which a clamping means such a biasing force can apply to the clamping disc that after the clamping disc by means of the internal thread onto a suitable outer thread of the tension rod on ⁇ screw concentric to the central passage force to the tensioning pulley
  • the clamping means can directly or indirectly initiate a force on a support surface of the flow engine.
  • the clamping plate is first screwed onto the tie rod, where ⁇ at a matching external thread of the tie rod with an inner thread of the central passage of the clamping disk engages.
  • suitable clamping means may be applied directly or indirectly, a tensioning force on the first Abstützflache the pressure plate well, which is Weglei ⁇ tet in the Hirth toothing on the second exhaust supporting surface of the printing plate.
  • the first bearing surface may thus, for example.
  • As a bearing surface for the clamping means ⁇ serve, which are provided for application of the preload force.
  • the force transmission section is arranged as a number of symmetrical to the longitudinal direction
  • Passages is formed with internal screw threads, wherein the clamping means is executed ⁇ out as an equal number of screws, which can be screwed through the passages ⁇ NEN and can be supported on the first support surface of the pressure plate under Kraftbeetzschlagung. Since, as already stated above, due to the threaded engagement of the tensioner with the tie rod, the tensioning disc is immovable relative to the tie rod, the Vorspannkräf ⁇ te, which are transmitted via the screws in the appropriate ereninnen threads of the individual passages, in the pressure plate initiated on the first support surface. The total clamping force of the individual screws, which are arranged symmetrically in the circumferential direction about the central passage of the tensioning spike, adds up to the pretensioning force.
  • the clamping device can also be used as a hydraulic lifting device.
  • Be executed device which is supported against the power transmission section.
  • the power transmission section can in turn be understood as a section in which a force can be achieved by the clamping means in the clamping disc.
  • the hydraulic Hebevor ⁇ direction acts on the other hand, the pressure plate on its first Abstweilflache with a force that can be introduced as biasing force mediated by the second with a Hirth toothing ⁇ Hene Abstützflache the pressure plate in the respective components of the flow engine.
  • the tensioning pulley or tensioning tube has at least a number of mounting openings, in particular symmetrically about the central
  • a mounting opening is provided here to reach at least with a tool or by hand through the mounting hole to make more Montier suitse for bracing the tie rod can.
  • it turns out to be necessary to handle the after application of the pressure plate or clamping disc on the tie rod not wei ⁇ ter accessible clamping nut.
  • it is advantageous to be able to reach by the clamping disk or the clamping tube with suitable tools or by hand, to be able to re-tension the otherwise unreachable clamping nut suitable after pretensioning.
  • the provided mounting openings have these especially have a sufficient size in order firstly to run the Nachspannvorgang, at the same time, however, the strength of the clamping ⁇ disc and the clamping tube after introducing the biasing Strengthens ⁇ te will be subject to the same not to material fatigue.
  • Advantageous mounting holes have a size of, for example, between 20 and 50 cm in an extension direction.
  • the pressure plate made of hardened Me ⁇ tall is formed.
  • the clamping disc and the clamping tube itself a hardened metal umfas ⁇ sen. Due to the provision of hardened metals in these acted upon by high biasing forces components safe transmission of power and avoid material fatigue of the respective materials is guaranteed.
  • Figure 1 is a perspective view of an embodiment of a clamping system 1 of the invention
  • Figure 4 is a side sectional view through an exporting ⁇ approximate shape of a tensioning system 1 according to the invention, which has a tensioning tube 12 in the longitudinal extension direction of the tie rod.
  • FIG. 1 shows a perspective view of a tensioning system 1 according to the invention for pretensioning a tie rod 40, which has been indicated schematically.
  • the clamping system 1 comprises a pressure plate 100 which Zvi ⁇ rule of the clamping Write 11 and is arranged to be acted upon with a prestressing force components 3 of a fluid-power machine. 2
  • the pressure plate 100 has one of the clamping ⁇ disc 11 facing first Abstützflache 101, as well as the components 3 of the fluid-power machine 2 facing two ⁇ te AbstNeillflache 102.
  • the second Abstützflache 102 is here ⁇ at a Hirth coupling 103 (here not exclusively expressly shown), which can be brought into non-positive contact with the introduction of a biasing force into the components of the flow combustion engine when carrying out the pretensioning process with a suitable counterhirth gear 113 (not expressly shown here).
  • the clamping ⁇ means 35 are in this case designed as clamping screws, which are screwed in suitable passages 25 which are provided with a suitable internal thread screws 26th 11 Gleichzei ⁇ tig, the clamping disc to a central passage 20 which is also provided with an internal screw thread 21 verse ⁇ hen.
  • the clamping disk 11 For transmitting the biasing force by means of the clamping means 35, the clamping disk 11 is now screwed on the internal thread 21 on a corresponding mating external thread 41 of the tie rod 40 on ⁇ so that both relative to each other in the longitudinal direction (longitudinal direction) L of the tie rod can not be moved. Subsequently, the clamping means 35 designed as clamping screws are screwed into the passages 25, and transmit a clamping force after sufficient screwing on the first section surface 101 of the pressure plate 100. Will now be the individual designed as clamping screws clamping means 35 approximately cross with a
  • Hirth serration 103 ensures both the locally correct insertion position as well as a secure compression of the pressure plate 100 with the components 3. At the same time allows the Hirth serration an advantageous power ⁇ distribution around the central passage 20 of the clamping plate eleventh
  • Tie rod 40 comprehensive hollow shaft (not expressly shown here) is applied.
  • the compressor clamping nut can be nachge ⁇ spans 60 and brought into a final position ⁇ the.
  • the mounting holes 50 are in this case sufficiently large to reach with appropriate tools and to be able to turn the compressor lock nut 60 suitable.
  • Figure 3 shows an embodiment of a encompassed by the Invention ⁇ proper clamping system 1 clamping tube 12 and an education
  • the tensioning tube 12 has a conical portion, which is in each case terminally closed by a cylindrical portion. If the tensioning tube 12 is an embodiment of the tensioning tube according to the invention, which itself is provided with a Hirth toothing 103, the tensioning tube 12 does not require the use of a pressure plate 100 (not shown here) during tensioning of the tensioning anchor 40. Much more ⁇ a second force transmission surface 202 may be provided with the Hirth toothing 103, and this with a suitable Gegenhirth toothing 113 (not shown here) of a component 3 (not shown here) of a flow ⁇ 2 engine (not shown here) in Traction be brought.
  • the force for biasing the tie rod 40 via the first force transmission surface 201 such that the force on the first power transmission surface 201 to the second power ⁇ transmission surface 202 is mediated by the clamping tube 12, then directly or indirectly in the components 3 of the flow engine 2 to be initiated.
  • the tensioning tube 12 contrary to the present reference number, is not provided with a Hirth toothing 103, this can be formed as part of a tensioning system 1.
  • the terminal end surface shown here as the second force transmission surface 202 is not provided with a Hirth toothing, so that it can lie approximately flat against a first support surface 101 of a pressure plate 100.
  • the biasing force is transmitted via the pressure plate 100 in the to be acted upon by the biasing force components 3 of the flow engine 2.
  • the biasing force is applied by a turbine clamping nut 70, which (in this case not provided with reference sign ⁇ ) the biasing force in the clamping tube 12 transmits through suitable angled fittings.
  • the turbine retaining nut 70 is in this case terminal the tie rod 40 is screwed on and thus can mediate over the clamping tube 12 in the region of the compressor-clamping nut 60 cause a bias.
  • this can in turn via suitable
  • Mounting holes 50 are manipulated in the clamping tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention concerne un système de serrage (1) permettant de précontraindre un tirant (40) d'une turbomachine (2). Ledit système comprend une rondelle de serrage (11) ou un tube de serrage (12), ainsi qu'un plateau de pression (100), lequel comprend une première surface d'appui (101) orientée vers la rondelle de serrage (11) ou le tube de serrage (12) lorsque le tirant (40) est précontraint, ainsi qu'une deuxième surface d'appui (102), qui est disposée en face de la première surface d'appui (101). La rondelle de serrage (11) ou le tube de serrage (12) présente un passage central (20) que l'induit (40) peut traverser dans une direction longitudinale prédéfinie (L), laquelle coïncide avec la direction longitudinale de l'induit (40). La deuxième surface d'appui (102) présente un crantage Hirth (103) qui, lors de la précontrainte, peut être amené en contact à plat avec un crantage Hirth complémentaire (113) adapté pour l'application d'une force de précontrainte dans des éléments (3) de la turbomachine (2).
PCT/EP2015/072717 2014-10-07 2015-10-01 Système de serrage permettant de précontraindre un tirant d'une turbomachine WO2016055355A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014220294.9 2014-10-07
DE102014220294.9A DE102014220294A1 (de) 2014-10-07 2014-10-07 Spannsystem zum Vorspannen eines Zugangs einer Strömungskraftmaschine

Publications (1)

Publication Number Publication Date
WO2016055355A1 true WO2016055355A1 (fr) 2016-04-14

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Application Number Title Priority Date Filing Date
PCT/EP2015/072717 WO2016055355A1 (fr) 2014-10-07 2015-10-01 Système de serrage permettant de précontraindre un tirant d'une turbomachine

Country Status (2)

Country Link
DE (1) DE102014220294A1 (fr)
WO (1) WO2016055355A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120354A (zh) * 2020-02-25 2020-05-08 浙江上风高科专风实业有限公司 一种核电站用轴向离心风机
CN112682104A (zh) * 2020-12-25 2021-04-20 福建福清核电有限公司 一种核电厂汽轮机联轴器螺栓安装方法
CN117697692A (zh) * 2024-02-06 2024-03-15 成都中科翼能科技有限公司 一种燃气轮机锁紧连接装置的专用装卸工装

Citations (3)

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Publication number Priority date Publication date Assignee Title
US20070009360A1 (en) * 2004-07-13 2007-01-11 Honeywell International, Inc. Non-parallel spacer for improved rotor group balance
DE102010040288A1 (de) * 2010-09-06 2012-03-08 Siemens Aktiengesellschaft Rotor
US20120093661A1 (en) * 2010-10-13 2012-04-19 Vick Michael J Thermally insulating turbine coupling

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US5871205A (en) * 1996-05-24 1999-02-16 Latham; Robert J. Size adaptable bolt tensioner
JP4591047B2 (ja) * 2004-11-12 2010-12-01 株式会社日立製作所 タービンロータ及びガスタービン
GB201121976D0 (en) * 2011-12-20 2012-02-01 Ceney David Stud tensioning apparatus
RU2015112596A (ru) 2012-09-07 2016-10-27 Сименс Акциенгезелльшафт Способ сборки, соответственно разборки, содержащего множество роторных конструктивных элементов ротора турбомашины с осевым прохождением потока и такой ротор

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070009360A1 (en) * 2004-07-13 2007-01-11 Honeywell International, Inc. Non-parallel spacer for improved rotor group balance
DE102010040288A1 (de) * 2010-09-06 2012-03-08 Siemens Aktiengesellschaft Rotor
US20120093661A1 (en) * 2010-10-13 2012-04-19 Vick Michael J Thermally insulating turbine coupling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120354A (zh) * 2020-02-25 2020-05-08 浙江上风高科专风实业有限公司 一种核电站用轴向离心风机
CN111120354B (zh) * 2020-02-25 2020-10-20 浙江上风高科专风实业有限公司 一种核电站用轴向离心风机
CN112682104A (zh) * 2020-12-25 2021-04-20 福建福清核电有限公司 一种核电厂汽轮机联轴器螺栓安装方法
CN117697692A (zh) * 2024-02-06 2024-03-15 成都中科翼能科技有限公司 一种燃气轮机锁紧连接装置的专用装卸工装
CN117697692B (zh) * 2024-02-06 2024-04-23 成都中科翼能科技有限公司 一种燃气轮机锁紧连接装置的专用装卸工装

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