EP2788634A1 - Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique - Google Patents

Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique

Info

Publication number
EP2788634A1
EP2788634A1 EP12788485.6A EP12788485A EP2788634A1 EP 2788634 A1 EP2788634 A1 EP 2788634A1 EP 12788485 A EP12788485 A EP 12788485A EP 2788634 A1 EP2788634 A1 EP 2788634A1
Authority
EP
European Patent Office
Prior art keywords
coupling
sleeve
thread
torque
halves
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.)
Withdrawn
Application number
EP12788485.6A
Other languages
German (de)
English (en)
Inventor
David Barkowski
Ridvan Bayram
Volker Guck
Ralf Hoffacker
Yevgen Kostenko
Rene Mahnke
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
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 filed Critical Siemens AG
Priority to EP12788485.6A priority Critical patent/EP2788634A1/fr
Publication of EP2788634A1 publication Critical patent/EP2788634A1/fr
Withdrawn legal-status Critical Current

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
    • F01D5/026—Shaft to shaft connections
    • 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
    • F01D13/00—Combinations of two or more machines or engines
    • F01D13/003—Combinations of two or more machines or engines with at least two independent shafts, i.e. cross-compound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
    • 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
    • F04D29/622—Adjusting the clearances between rotary and stationary parts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement

Definitions

  • the invention relates to a torque coupling, a strand having at least two turbomachines whose rotors are coupled to the torque coupling, and a method for adjusting the axial position of the rotors.
  • a steam turbine before ⁇ is seen to drive a turbo-compressor, wherein the rotor of the steam turbine and the rotor of the turbocompressor are coupled with a torque clutch.
  • the rotor of the steam turbine is set for example with a Axi ⁇ allager in the axial direction, which is attached to the longitudinal end of the rotor, which faces away from the torque coupling.
  • the rotor of the steam turbine is in contact with process steam, so that the rotor is heated by the process steam, which is accompanied by a corresponding thermal axial expansion of the rotor.
  • the heat input is high ⁇ contract from the process steam in the rotor, wherein the axial length of the rotor amendments tion of correspondingly.
  • the rotor with the thrust bearing is axially at the opposite longitudinal end of the torque coupling set, the other longitudinal end to which the torque clutch is being introduced ⁇ , the largest axial displacement undergoes.
  • This axial displacement is transmitted via the torque coupling to the rotor of the turbocompressor, whereby the rotor of the turbocompressor is also displaced axially.
  • the axial position of the rotor changes relative to the housing of the turbo ⁇ compressor, which may result in unfavorable fluid mechanical conditions in the turbo compressor.
  • the axial displacement of the rotor of the turbo compressor in the housing must be kept constructive, which usually geometries in the turbo compressor are accepted which are associated with losses in the thermodynamic efficiency of the turbocompressor.
  • the problem can occur analogously when, for example, two rotors of two steam turbines are coupled with a torque coupling.
  • the object of the invention is to provide a torque coupling, a strand having at least two turbomachines whose rotors are coupled to the torque coupling, and a method for adjusting the axial position of the rotors, wherein the turbomachinery are effectively operable over a wide operating range.
  • the torque coupling according to the invention has a first coupling half, which has a first coupling screw, and a second clutch half, having a second clutch ⁇ thread having an opposite intimate for the first coupling screw rotation and rotationally fixed to the first coupling half and is fixed relative to the first coupling half axial displace ⁇ slidable, and a sleeve with a first sleeve thread and a second sleeve thread, wherein each of the socket threads is ver screwed with one of the coupling screw ⁇ and the sleeve is driven by a variable-speed drive unit, that the sleeve by means of the drive unit with a different angular velocity of the coupling halves Angular velocity is rotatable so that the axial distance of the coupling halves is mutually variable, as well as synchronously rotatable with the coupling halves, so that the axial distance remains the same.
  • the strand according to the invention has at least two turbomachines whose rotors are
  • the inventive method for adjusting the Axialposi ⁇ tion of the rotors of the turbomachinery of the strand has the following steps: operating the strand with the turbo ⁇ machines whose rotors are coupled together with the torque coupling, wherein driven by the drive unit, the sleeve synchronously to the Rotors is rotated; Vorherbestim- men of a desired value of the axial distance of the two coupling halves ⁇ ; Determining an actual value of the axial distance of the coupling halves; When the target value is not equal to the actual value, rotating the sleeve by means of the drive unit with a to the angular speed of the clutch halves in such a different angular velocity, and with a Derar ⁇ term continuous, that the actual value is equal to the target value.
  • the actual value is determined from an axial distance from one point on the strand to a fixed point on the foundation of the strand.
  • the actual value is determined by an ultrasonic method or by
  • the strand consists of a steam turbine and a turbocompressor as the turbomachines
  • the rotor of the steam turbine experiences a high heat input through the process steam during startup, as a result of which the axial length of the steam turbine rotor changes.
  • the rotor of the turbocompressor Via the Drehmomentkupp ⁇ lung might be the rotor of the turbocompressor will also be moved axially, whereby the axial position of the rotor of the turbocompressor would change relative to the housing of the turbocompressor disadvantageous.
  • the coupling threads are preferably external thread and the socket threads internal thread and / or the coupling thread and the socket thread fine thread. By providing fine wind ⁇ the axial distance between the two coupling halves is precisely adjustable to each other.
  • the coupling halves are preferably positively locking each other in engagement.
  • the drive ⁇ unit is preferably a motor, in particular an electric ⁇ motor, which is coupled by means of a transmission with the sleeve. It is preferred that the transmission has a pinion driven by the motor, which engages in a ring gear attached to the sleeve ⁇ .
  • the sprocket is preferably arranged on the front side or radially on the outside of the sleeve ⁇ .
  • the turbo compressor for example, in axial flow and has alternately stationary guide and Rotie ⁇ Rende rotor blade rings on.
  • the torque clutch axial displacement of the rotor of the turbo compressor there is a displacement of the blade rings relative to the guide vane rings, so that, for example, the trailing edges of the blades of one of the blade rings unfavorably approach the leading edges of the blades ⁇ show the downstream vane ring. This leads to false starts in the vane ring, which reduces the thermodynamic efficiency of the turbocompressor.
  • turbo compressor for example a in the main flow direction a tapered housing contour
  • the turbo compressor can set at the undesired and non-compensated by the torque clutch axial displacement of the rotor of the turbocompressor a is unfavorable Variegated ⁇ tion of the radial gap between the blade tips of the blades to the housing. If the rotor of the turbocompressor is displaced axially unfavorably in the main flow direction, the radial gap can be bridged and the blades on the housing are detrimentally scratched.
  • the radial gap can be large, thereby to increase the gap flow ⁇ effects and the thermal efficiency of the turbo compressor decreases.
  • a strand 1 has a first shaft 2, a second shaft 3 and a Drehmomentkupp ⁇ ment 5, wherein the first shaft 2 is coupled to the second shaft 3 by means of the torque coupling 5.
  • the first shaft 2 and the second shaft 3 have a common shaft axis 4 about which the shafts 2, 3 and the torque coupling 5 are rotatable.
  • the torque coupling 5 has a first coupling half 6 and a second coupling half 7, wherein the first coupling half 6 with the first shaft 2 and the second coupling half 7 with the second shaft 3 are firmly connected.
  • the two coupling halves 6, 7 are mutually positively and axially displaceable in engagement.
  • a coupling gap 8 is provided with an axial distance 21.
  • the first clutch half 6 has a first thread coupling 10 and the second Kupp ⁇ lung half 7 has a second coupling thread 11 on its radially outer side on its radially outer side.
  • the coupling threads 10, 11 have opposite directions of rotation and the axes of the coupling ⁇ thread 10, 11 coincide with the shaft axis 4.
  • the torque coupling 5 also has a sleeve 9 with a radially inner first sleeve thread 12 and a radially inner second sleeve thread 13.
  • the socket threads 12, 13 have opposite directions of rotation. thinking bar is that the threads 10 to 13 are alsobil ⁇ det as a fine thread.
  • the first female thread 12 is connected to the first Kupp ⁇ lung thread 10 and the second threaded sleeve screwed to the two threaded coupling ⁇ th 11 13, so that the coupling halves 6, 7 are covered by the sleeve 9 and against a
  • the sleeve is arranged radially inn detox on the coupling halves.
  • the coupling halves would have internal threads and the sleeve external threads.
  • the strand 1 is arranged on a foundation 18.
  • a drive unit 15 is mounted, which is coupled to the sleeve 9.
  • the rotation of the sleeve 9 can be accomplished relative to the coupling halves 6, 7.
  • the sleeve 9 radially on the outside ⁇ a ring gear 14 which engages in a pinion 17 of a transmission 16 of the drive unit 15.
  • the toothed ring 14 is arranged on the end face of the sleeve 9.
  • the sleeve 9 By coupling the sleeve 9 with the drive ⁇ unit 15, the sleeve 9 can be rotated by means of the drive unit 15 with a to the angular velocity of the coupling halves 6, 7 different angular velocity, so that the coupling gap 8 widened or narrowed who ⁇ can.
  • the coupling between the sleeve 9 and the drive unit 15 can for example also by belts ⁇ SUC gene.
  • the drive unit 15 is a motor, particularly an electric motor.
  • the method for adjusting the axial position of the two coupling halves 6, 7 of the torque coupling 5 relative zuein- the other is carried out as follows: operating of the strand 1, wherein driven by the drive unit 15, the sleeve is rotated syn ⁇ chron; Predetermining a desired value of the Axi ⁇ alabstands 21 of the two coupling halves 6, 7; Determining an actual value of the axial spacing 21 of the two clutch halves ⁇ 6, 7; If the target value is not equal to the actual value, the sleeve 9 is rotated by means of the drive unit 15 with an angular velocity different from the angular velocity of the coupling halves 6, 7 and with a duration such that the actual value becomes equal to the desired value , If the rotational frequency of the coupling halves 6, 7, for example
  • the sleeve can be uncoupled from the drive unit 9 15 ⁇ the.
  • the drive unit 15 is driven by the sleeve 9.
  • the actual value can result from a distance from one of the two measuring points 19, 20 to a fixed point 23 or 24, which is at rest relative to the foundation 18.
  • the desired value can also result from the length of the shaft 2 and / or 3, which can change during operation of the strand 1 by thermal expansion. It is also possible to determine the distance of a point on the shaft 2 or 3 to a reference point on the housing of the turbomachine. As a result, a differential expansion between the shaft 2 or 3 and the housing could be detected.
  • the measurement of the distance can be determined by an ultrasonic method or by means of an inductive distance sensor.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne un accouplement dynamométrique comportant un premier demi-accouplement (6), qui est muni d'un premier filetage d'accouplement (10), et un deuxième demi-accouplement (7), qui est muni d'un deuxième filetage d'accouplement (11) dont le sens de rotation est opposé à celui du premier demi-accouplement, et qui est fixé de manière solidaire en rotation au premier demi-accouplement (6) et de manière mobile axialement par rapport au premier demi-accouplement (6). L'accouplement dynamométrique comporte également un manchon (9) muni d'un premier filetage de manchon (12) et d'un deuxième filetage de manchon (13), chacun des filetages de manchon (12, 13) étant vissé à un des filetages d'accouplement (10, 11) et le manchon (9) étant entraîné par une unité d'entraînement (15) à une vitesse de rotation variable de telle manière que le manchon (9) peut être mis en rotation par l'unité d'entraînement (15) à une vitesse angulaire différente de la vitesse angulaire des demi-accouplements (6, 7), de sorte que la distance axiale (21) entre les demi-accouplements (6, 7) peut être modifiée, et peut être mis en rotation de manière synchronisée avec les demi-accouplements (6, 7), de sorte que la distance axiale (21) reste fixe.
EP12788485.6A 2012-01-25 2012-11-07 Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique Withdrawn EP2788634A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12788485.6A EP2788634A1 (fr) 2012-01-25 2012-11-07 Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12152440.9A EP2620665A1 (fr) 2012-01-25 2012-01-25 Embrayage à couple et procédé de réglage d'un embrayage à couple
EP12788485.6A EP2788634A1 (fr) 2012-01-25 2012-11-07 Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique
PCT/EP2012/071981 WO2013110364A1 (fr) 2012-01-25 2012-11-07 Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique

Publications (1)

Publication Number Publication Date
EP2788634A1 true EP2788634A1 (fr) 2014-10-15

Family

ID=47216231

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12152440.9A Withdrawn EP2620665A1 (fr) 2012-01-25 2012-01-25 Embrayage à couple et procédé de réglage d'un embrayage à couple
EP12788485.6A Withdrawn EP2788634A1 (fr) 2012-01-25 2012-11-07 Accouplement dynamométrique et procédé de réglage dudit accouplement dynamométrique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12152440.9A Withdrawn EP2620665A1 (fr) 2012-01-25 2012-01-25 Embrayage à couple et procédé de réglage d'un embrayage à couple

Country Status (3)

Country Link
EP (2) EP2620665A1 (fr)
CN (1) CN104067015B (fr)
WO (1) WO2013110364A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105041889A (zh) * 2015-06-23 2015-11-11 江苏荣基重工科技有限公司 一种联轴器
DE102020209199A1 (de) * 2020-07-22 2022-01-27 Robert Bosch Gesellschaft mit beschränkter Haftung Sensorsystem zur Überwachung eines Kupplungssystems

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978814A (en) * 1932-05-14 1934-10-30 Us Electrical Mfg Company Shaft coupling
US5123772A (en) * 1991-04-15 1992-06-23 Coupling Corporation Of America Threaded assembly with locking capability
JP4272883B2 (ja) * 2000-11-16 2009-06-03 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング トルクを遊びなく伝達するための伝動エレメント
US7788896B2 (en) * 2007-07-06 2010-09-07 John Jackson Screw shaft turbine compressor
DE102008044892A1 (de) * 2008-08-29 2010-03-25 Chr. Mayr Gmbh + Co Kg Axial steckbare Wellenkupplung
KR101040269B1 (ko) * 2010-11-25 2011-06-09 엘아이지넥스원 주식회사 축 내부에 삽입되는 커플링
CN102324829B (zh) * 2011-08-02 2013-07-17 江苏大学 一种可调式轴向异步磁力联轴器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013110364A1 *

Also Published As

Publication number Publication date
EP2620665A1 (fr) 2013-07-31
CN104067015B (zh) 2016-05-11
CN104067015A (zh) 2014-09-24
WO2013110364A1 (fr) 2013-08-01

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