EP1703078B1 - Dispositif et procédé pour sécuriser les pattes de verrouillage dans un compresseur ou une turbine par pliage - Google Patents

Dispositif et procédé pour sécuriser les pattes de verrouillage dans un compresseur ou une turbine par pliage Download PDF

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Publication number
EP1703078B1
EP1703078B1 EP05005872A EP05005872A EP1703078B1 EP 1703078 B1 EP1703078 B1 EP 1703078B1 EP 05005872 A EP05005872 A EP 05005872A EP 05005872 A EP05005872 A EP 05005872A EP 1703078 B1 EP1703078 B1 EP 1703078B1
Authority
EP
European Patent Office
Prior art keywords
bending device
bending
punch
compressor
intermediate space
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
EP05005872A
Other languages
German (de)
English (en)
Other versions
EP1703078A1 (fr
Inventor
David Miosga
Peter Schröder
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
Priority to DE502005000782T priority Critical patent/DE502005000782D1/de
Priority to EP05005872A priority patent/EP1703078B1/fr
Priority to ES05005872T priority patent/ES2285594T3/es
Priority to AT05005872T priority patent/ATE363585T1/de
Priority to PL05005872T priority patent/PL1703078T3/pl
Application filed by Siemens AG filed Critical Siemens AG
Priority to CNB2006100086332A priority patent/CN100443209C/zh
Priority to US11/385,048 priority patent/US7415763B2/en
Publication of EP1703078A1 publication Critical patent/EP1703078A1/fr
Application granted granted Critical
Publication of EP1703078B1 publication Critical patent/EP1703078B1/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
    • 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling

Definitions

  • the invention relates to a bending device positionable for bending a sheet in a gap between two blade rings arranged along an axis of a compressor or turbine with blades extending along a radius. Furthermore, the invention relates to a method for bending a sheet in the intermediate space.
  • a turbine or a compressor formed between a housing and an impeller or rotor flow channel with a flow of working fluid is applied.
  • the flow channel extends along an axis of the compressor or turbine.
  • In the flow channel extend along a radius blades, which are flowed through by the working medium.
  • These may be casings attached to the housing or blades attached to the impeller or rotor.
  • the vanes serve to influence the flow of the working medium.
  • the blades are flowed by the flow of the working medium.
  • the blades are rotated by the impeller in rotational motion and compress in this way the flow of the working fluid.
  • the flowing working fluid releases its kinetic energy to the blades, which in this way cause the rotor to rotate.
  • the rotational movement of the rotor can be used, for example, to drive a generator and above to generate electricity.
  • a number of vanes typically form a vane ring in which the number of vanes are secured annularly juxtaposed along the circumference of the flow duct to the housing in the case of vanes or on the rotor or impeller in the case of blades.
  • One depending on the application appropriate number of such blade rings is arranged in steps along the axis of a compressor or a turbine in a row.
  • the design and alignment of a blade of a blade ring varies from stage to stage in accordance with the pressure and temperature conditions of the flow of the working medium along the flow channel. Between a first and a second blade ring arranged along the axis, there is a gap in which the medium flows freely.
  • a shovel In the space a shovel is fixed with its foot on the impeller or housing.
  • the attachment can be secured by bending a metal sheet in the intermediate space, for example into a gap formed on the housing or impeller or rotor.
  • a compressor For assembly or disassembly during production or revision of a compressor such a locking plate is previously bent manually.
  • a bending tool in the form of a rod or a suitable lever is positioned in a space between two blade rings arranged along an axis of a compressor with blades extending along a radius on the sheet to be bent. By striking a hammer on the bending tool, the sheet is then bent manually.
  • This bending process must be performed individually for each locking plate.
  • the manual activity no defined and reproducible bending in a series of sheets can be guaranteed.
  • the manual operation leads to a relatively high installation time.
  • the leverage forces to be executed are in some cases so great that when the lever slips off there is a comparatively high risk of injury to the installer and / or a blade of the compressor can be damaged.
  • the impeller or provided for receiving the blades wheel disc can be damaged.
  • cracks can be initiated in the metal sheet due to undefined, manual bending which may affect its life and safety.
  • the situation is similar in a bending operation of a sheet in a gap in a turbine.
  • a stationary device is known from US Pat. No. 3,440,706, by means of which compressor rotor blades can be fastened to a rotor disk.
  • the blades are arranged on the rotor disk and fastened by means of a then protruding sheet metal strip.
  • a plurality of hydraulic punches are present on the device. These hydraulic rams are extended one after the other and retracted to gradually bend over the sheet metal strip until it rests against the rotor disk on the front side.
  • the invention is directed to providing an apparatus and method for bending a sheet in a space between two blade rings arranged along an axis of a compressor or a turbine with blades extending along a radius which simultaneously perform the bending operation more effective and reliable than a manual bending process.
  • the object is achieved by the bending device mentioned above, which according to the invention comprises a fixing element for the bending device, a hydraulic system and an actuatable by the hydraulic punch, which is executable in the direction of the radius.
  • the invention is based on the consideration that, in departure from a manual bending process, a comparatively automated bending process can perform, on the one hand, more effectively and, on the other hand, more reliably the bending of a metal sheet.
  • the invention has recognized that it is possible to provide a bending device which is fixable in the intermediate space and can bend a sheet to be bent in a defined manner effectively and reliably via a hydraulically actuable punch.
  • the hydraulics can namely be operated largely automatically, without a fitter would have to perform manually with an attached lever bending the sheet. Rather, it is up to the installer now to fix the bending device in the space and to set the hydraulics in motion.
  • the method according to the new concept leads to a time saving when bending a sheet, so that in particular in the case of a compressor, the possibility of a comparatively rapid exchange of a blade ring is given. In this way the revision time and thus the necessary costs are reduced. Since a fitter no longer has to carry out the bending process independently with considerable expenditure of force, a danger of injury to the fitter and a risk of damaging a blade are virtually ruled out. Rather, an installer adjusts and fixes the hydraulic bending device and then activates the hydraulics. The installer can observe the bending process and possibly influence the bending process under control of the hydraulic and hydraulic power.
  • the bending device is expediently formed in the form of a mobile, portable bending device.
  • the bending device can be handled easily and, for example, along the axis of a compressor in each successive spaces each properly positioned and fixed.
  • the fixing element is designed for fixing the bending device in the respective intermediate space along the axis.
  • This has the advantage that the bending device can be properly fixed with varying dimensions of the intermediate space, for example with a varying dimension between a first and a second blade ring, ie even in the case of a variable environment.
  • a fixing element in the form of a clamping element that allows clamping of the bending device in the intermediate space along the axis is particularly advantageous.
  • the fixing element is adaptable to different spaces between the blade rings.
  • the hydraulic system of the bending device preferably has a pump, a guide for hydraulic fluid, for example an inlet and outlet, and a cylinder for actuating the punch.
  • the hydraulic pump is replaceable.
  • the bending device in particular has a variable connection, via which a pump can be connected. This can be, for example, any automatic pump, eg a pump that is often present for an embossing device, or a manually operated hand pump. This has the advantage that the bending device can be operated with existing pumps.
  • the punch of the bending device is replaceable.
  • This increases the variability of the bending device and makes the bending device adaptable, for example, to a respective plate of a compressor wheel.
  • the bending device can thus be used for a variety of spaces with variable dimensions. Despite different dimensions of the spaces along an axis of a compressor or a turbine thus one and the same bending device for bending a sheet can be used in a space, namely by, for example, the fixing element for clamping the bending device is variably adjustable and on the other hand a stamp of the bending device is replaceable, in particular by a stamp of other dimensions is replaceable.
  • the punch is extendable in the direction of the radius.
  • the ram in the case of a bending device fixed along the axis of a compressor or a turbine, the ram can therefore be extended perpendicularly to the fixing direction of the bending device, namely in the direction of the radius. It has been found that a bending device arranged in this way relative to a turbine or a compressor can be adjusted and fixed in a particularly simple and reliable manner and can execute the bending operation reliably.
  • the bending device is fixed in the space along the axis and the punch in the direction of the radius moved toward the sheet to be bent. Conveniently, the sheet is folded into a groove of the impeller.
  • FIG. 1 shows an impeller 1 of a compressor (not shown) with a number of blade rings 5 arranged along an axis 3 of the compressor.
  • a blade ring 5 has a number of blades 9 extending along a radius 7, of which in each case one blade 9 in FIG Section is shown.
  • a blade 9 of the compressor is held with its foot 11, similar to a tongue and groove connection to a respective segment 13 of the compressor wheel 1.
  • the groove for receiving the foot 11 is in each case designed as an axial groove.
  • the orientation and design of such grooves is exemplified in FIG 2, wherein the arrow 12 indicates the direction of the turbine axis 3.
  • the foot 11 is inserted together with an underlying plate 47 in the groove of the segment 13.
  • sheet 47 is provided with a bead 14 running circumferentially (i.e., transverse to axis 3) which engages a corresponding recess on the underside of foot 11.
  • the length of the sheet 47 is dimensioned such that it projects beyond the impeller 1 or the so-called wheel disc head immediately after insertion into the groove of the segment 13 on both sides (that is, in the axial direction). This is shown in FIG. 3A.
  • the arrangement of the plate 47 which acts as a safety plate in this manner after bending (that is to say in the operating state of the compressor) is shown in FIG. After bending into the respectively provided for receiving groove 43, the tabs of the plate 47 are flush with the wheel disc head.
  • the position of the locking plates 47 in relation to the turbine blades 9 and the Radusionnkopf can also be illustrated by the reproduced in Figure 4 view, in which the viewing direction in the radial direction (from the blade tips to the turbine shaft) is selected.
  • a plate 47 is shown before bending and a plate 47 after bending.
  • the respective receiving groove and thus also the plate 47 are slightly inclined in this example against the direction of the axis 3.
  • a bending device 17 is fixed.
  • the bending device 17 is positioned in the intermediate space 15 and clamped by a fixing element 19 in the form of a clamping element in the intermediate space 15 between two stops 21 of adjacent segments 13 of the compressor wheel 1.
  • the fixing element 19 can be widened via a screw 23 or alternatively via a hydraulic cylinder.
  • the fixing member 23 is mounted either releasably adjacent to the bending device in the space 15 and by actuation of the screw 23 or hydraulic Widened way.
  • the fixing element can also be attached directly to the bending device and already positioned with the bending device in the intermediate space 15. In this way, the bending device 17 together with the fixing element 19 have different axial widths, which is also adaptable to a gap 15 'or 15 ", wherein the intermediate spaces 15, 15' and 15" have different dimensions.
  • a bending device 17 fixed in this way also has a hydraulic system 25.
  • the hydraulic system comprises a pump 27, a feed 29 and an outlet 31 for a hydraulic fluid and a hydraulic cylinder 33.
  • the hydraulic cylinder 33 serves to actuate a punch 35.
  • the punch can, depending on the selected inflow 37 or outflow 39 in a corresponding movement 41 along a radius 7 off or retracted.
  • the punch 35 of the bending device 17 is hydraulically actuated, wherein the punch 35 is moved along the radius 7 on the sheet 47 to be bent. In this way, the sheet to be bent 47 is folded under the action of the punch 35.
  • the stopper 45 acts as a edge strip for the sheet 47 to be bent.
  • the movement of the punch is effected by a hydraulic piston 49, which extends from the pump 27 at supply 37 of hydraulic fluid.
  • the punch 35 is replaceable, so that it is adapted to the respective to be mounted plate 47, which is designed as a locking plate.
  • a different punch can thus be used to bend a securing plate.
  • a punch moves radially on the sheet 47 to be bent during extension of the piston 49 and edges it on the stop 45 acting as a border around.
  • an existing hydraulic pump for example a hydraulic pump for a mobile embossing device, can also be used.
  • the provided for the drive of the hydraulic cylinder 33 with the punch 35 pump 27 can also be used to actuate the fixing element 19, if this is carried out hydraulically.
  • each one or the other functional unit can be controlled by mounted in the system of hydraulic lines directional control valves.
  • the bending device 17 is provided according to the embodiment shown in FIG 1 with a sealing tip protection 51.
  • the sealing tip protection 51 as a polymeric or made of a soft metal pad, which is interchangeable attached to the bending device 37, executed.
  • a method for bending a sheet 47 in the gap 15, 15 ', 15 "provides that a bending device 17 is positioned in the gap 15, 15', 15", the bending device 17 in the gap 15, 15 ', 15 is fixed, for bending the sheet 47, a punch 35 of the bending device 17 is hydraulically actuated, wherein the punch 35 is moved to the sheet 47 to be bent and the sheet 47 is bent under the action of the punch 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (11)

  1. Dispositif (17) de pliage, qui afin de plier une plaque (47) de tôle, peut être positionné dans un espace (15, 15', 15") intermédiaire entre deux aubages (5) disposés le long d'un axe (3) d'un compresseur ou d'une turbine et dotés d'aubes (9) s'étendant le long d'un rayon (7),
    caractérisé en ce que le dispositif de pliage comprend un élément (19) d'immobilisation, un système (25) hydraulique et un poinçon (35) qui peut être actionné par le système (25) hydraulique et qui peut être déployé dans la direction du rayon (7).
  2. Dispositif (17) de pliage suivant la revendication 1, sous la forme d'un dispositif de pliage mobile et portatif pouvant être inséré dans l'espace intermédiaire.
  3. Dispositif (17) de pliage suivant la revendication 1 ou 2, caractérisé en ce que l'élément (19) d'immobilisation est conçu pour immobiliser le dispositif (17) de pliage le long de l'axe (3) dans l'espace (15, 15', 15") intermédiaire.
  4. Dispositif (17) de pliage suivant l'une des revendications 1 à 3, caractérisé en ce que l'élément (19) d'immobilisation est réalisé sous la forme d'un élément de serrage qui permet de maintenir par serrage le dispositif (17) de pliage le long de l'axe (3) dans l'espace (15, 15', 15") intermédiaire.
  5. Dispositif (17) de pliage suivant l'une des revendications 1 à 4, caractérisé en ce que l'élément (19) d'immobilisation peut être adapté à des espaces (15, 15', 15") intermédiaires différents entre des aubages (5).
  6. Dispositif (17) de pliage suivant l'une des revendications 1 à 5, caractérisé en ce qu'une pompe (27) hydraulique est interchangeable.
  7. Dispositif (17) de pliage suivant l'une des revendications 1 à 6, caractérisé en ce que le poinçon (35) est interchangeable.
  8. Procédé de pliage d'une plaque de tôle dans un espace (15, 15', 15") intermédiaire entre deux aubages (5) disposés le long d'un axe (3) d'un compresseur ou d'une turbine et dotés d'aubes (9) s'étendant le long d'un rayon (7),
    suivant lequel un dispositif (17) de pliage suivant la revendication 1 est positionné dans l'espace (15, 15', 15") intermédiaire,
    caractérisé en ce que
    - le dispositif (17) de pliage est immobilisé dans l'espace (15, 15', 15") intermédiaire par un élément d'immobilisation,
    - afin de plier la plaque (47) de tôle, un poinçon (35), pouvant être déployé dans la direction du rayon, du dispositif (17) de pliage est actionné hydrauliquement,
    - le poinçon (35) étant déplacé en direction de la plaque (47) de tôle à plier, et
    - la plaque (47) de tôle étant pliée sous l'action du poinçon (35).
  9. Procédé suivant la revendication 8, caractérisé en ce que le dispositif (17) de pliage est immobilisé le long de l'axe (3) dans l'espace (15, 15', 15") intermédiaire.
  10. Procédé suivant la revendication 8 ou 9, caractérisé en ce que le poinçon (35) est déplacé dans la direction du rayon (7) vers la plaque (47) de tôle à plier.
  11. Procédé suivant l'une des revendications 8 à 10, caractérisé en ce que la plaque (47) de tôle est rabattue dans une rainure (43) d'un rotor (1).
EP05005872A 2005-03-17 2005-03-17 Dispositif et procédé pour sécuriser les pattes de verrouillage dans un compresseur ou une turbine par pliage Not-in-force EP1703078B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP05005872A EP1703078B1 (fr) 2005-03-17 2005-03-17 Dispositif et procédé pour sécuriser les pattes de verrouillage dans un compresseur ou une turbine par pliage
ES05005872T ES2285594T3 (es) 2005-03-17 2005-03-17 Curvadora y procedimiento de curvado de una lamina de seguridad en un compresor o una turbina.
AT05005872T ATE363585T1 (de) 2005-03-17 2005-03-17 Biegevorrichtung und verfahren zum biegen eines sicherungsbleches in einem verdichter oder einer turbine
PL05005872T PL1703078T3 (pl) 2005-03-17 2005-03-17 Urządzenie do gięcia i sposób gięcia blachy zabezpieczającej w sprężarce lub turbinie
DE502005000782T DE502005000782D1 (de) 2005-03-17 2005-03-17 Biegevorrichtung und Verfahren zum Biegen eines Sicherungsbleches in einem Verdichter oder einer Turbine
CNB2006100086332A CN100443209C (zh) 2005-03-17 2006-02-20 用于弯曲一板件的折弯装置及方法
US11/385,048 US7415763B2 (en) 2005-03-17 2006-03-17 Bending device and method for bending a plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05005872A EP1703078B1 (fr) 2005-03-17 2005-03-17 Dispositif et procédé pour sécuriser les pattes de verrouillage dans un compresseur ou une turbine par pliage

Publications (2)

Publication Number Publication Date
EP1703078A1 EP1703078A1 (fr) 2006-09-20
EP1703078B1 true EP1703078B1 (fr) 2007-05-30

Family

ID=34934337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05005872A Not-in-force EP1703078B1 (fr) 2005-03-17 2005-03-17 Dispositif et procédé pour sécuriser les pattes de verrouillage dans un compresseur ou une turbine par pliage

Country Status (7)

Country Link
US (1) US7415763B2 (fr)
EP (1) EP1703078B1 (fr)
CN (1) CN100443209C (fr)
AT (1) ATE363585T1 (fr)
DE (1) DE502005000782D1 (fr)
ES (1) ES2285594T3 (fr)
PL (1) PL1703078T3 (fr)

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ES2285594T3 (es) 2007-11-16
US7415763B2 (en) 2008-08-26
US20060207309A1 (en) 2006-09-21
CN100443209C (zh) 2008-12-17
EP1703078A1 (fr) 2006-09-20
CN1833792A (zh) 2006-09-20
PL1703078T3 (pl) 2007-10-31
ATE363585T1 (de) 2007-06-15
DE502005000782D1 (de) 2007-07-12

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