EP2885544B1 - Carter à volute de pot sans soudure - Google Patents

Carter à volute de pot sans soudure Download PDF

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Publication number
EP2885544B1
EP2885544B1 EP13765979.3A EP13765979A EP2885544B1 EP 2885544 B1 EP2885544 B1 EP 2885544B1 EP 13765979 A EP13765979 A EP 13765979A EP 2885544 B1 EP2885544 B1 EP 2885544B1
Authority
EP
European Patent Office
Prior art keywords
pot
blank
volute casing
machining
spiral housing
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
EP13765979.3A
Other languages
German (de)
English (en)
Other versions
EP2885544A1 (fr
Inventor
Jan Weule
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
Publication of EP2885544A1 publication Critical patent/EP2885544A1/fr
Application granted granted Critical
Publication of EP2885544B1 publication Critical patent/EP2885544B1/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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for 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
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/163—Combinations of two or more pumps ; Producing two or more separate gas flows driven by a common gearing arrangement
    • 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
    • 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
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the invention relates to a method for producing a pot for a pot spiral housing for a Gereteturbover Noner, as well as a pot spiral housing for a Gereteturbover Noner.
  • Compressors or fluid compressing devices are used in various industries for various applications involving compression or compression of fluids, especially (process) gases.
  • Well-known examples of this are turbo compressors in mobile industrial applications, such as in exhaust gas turbochargers or in jet engines, or even in stationary industrial applications, such as gearbox turbo compressors for air separation.
  • a plurality of such compressor stages can be connected in series.
  • turbocompressors As types of turbocompressors, a distinction is made between radial and axial compressors.
  • the fluid to be compressed for example a process gas
  • the gas flows axially into the impeller of the compressor stage and is then deflected outwards (radially, radially).
  • a flow diversion becomes necessary behind each stage.
  • a spiral insert is inserted in such a way that a space enclosed by the spiral casing and the spiral insert, a so-called annular space, remains in the cylindrical bore axially at the end of the spiral insert, over which the fluid flows from Impeller coming - flows radially over an expanding cross-section.
  • a system piping such as a pressure nozzle tube arranged on the volute casing with a pressure nozzle flange arranged thereon, the fluid then flows from the annular space further away from the compressor stage.
  • Such a transmission compressor a transmission compressor from Siemens called STC-GC, used for air separation, is out http://www.energy.siemens.com/hq/de/verdichtung-expansion-ventilation/turbover Whyr/getriebeturbover Whyr/stc-gc.htm (available on 05.10.2012) known.
  • the - the impeller receiving, the inflow or flow of the fluid to or from the compressor stage or the impeller causing - volute is usually executed, especially for small wheels, as welded or cast structures, the advantages - in the case of Sch spakonstrutation- in a short delivery time and simplified usability for high pressures and - in the case of the cast construction - in a high efficiency.
  • the invention has for its object to provide a pot spiral housing for a turbomachine, which is simple and inexpensive to produce and / or mountable.
  • the object is achieved by a method for producing a pot for a pot spiral housing for a turbomachine and solved by a pot spiral housing for a turbomachine with the features according to the respective independent claim.
  • the pot is produced from a blank by a machining process.
  • blade means a workpiece, for example a substantially block-shaped solid material body, which - containing the finished pot - substantially unprocessed in terms of the shape and design of the finished pot produced. Only through the machining process, the pot then obtains its essentially finished shape and design.
  • the machining operation on the blank may be a single machining technique performed on the blank, such as turning, milling or drilling.
  • the blank - in the one machining operation - by two or more different machining techniques for example, by turning and milling or by turning and drilling or by milling and drilling or by turning, milling and drilling, are processed.
  • the pot-producing machining process from the blank can be preprocessed or be, for example, forged, in particular forged by Anschmieden a partial body to a body.
  • the pot can be post-processed or be, for example, by local Machining of outer and / or inner contour surfaces in the pot, such as an introduction of screwing and / or contact surfaces for additional components in a pot surface or a post-treatment of already created during the machining process screwing and / or contact surfaces.
  • the pot is produced by machining in a machining operation from a blank.
  • the pot spiral housing has a pot produced by the method for producing a pot for a pot spiral housing.
  • cup spiral housing such as a plant piping or a pressure pipe
  • Other components or components of the cup spiral housing can then, in particular directly, be screwed on or with the pot.
  • the pot or cup spiral casing can be made free of welding seams, the pre-processing or processing intermediate and post-processing steps, such as welding seam preparation, welding, annealing, sandblasting, otherwise necessary for the spiral casing welding constructions and weld inspection, eliminated.
  • the pressure-bearing pot of the volute casing or the pressure-bearing volute casing is or will be free of welded components, its manufacture is simplified and also safe in process, as well as the pot or pot volute casing being extremely pressure-proof.
  • the pot, as well as the pot spiral housing, according to the invention is also extremely fast and inexpensive to produce, especially in the invention, only a single component, i. the blank to be processed on the machine or in the machining center in a machining operation.
  • the invention makes it possible to keep the impeller (impeller / impellers) and / or fluid flow / fluid flows unchanged when the pot is used, that is, previous components of such compressors can be used in combination with the invention.
  • the previous vulnerability in welded cup spiral housings ie the connection of the plant piping or the pressure nozzle tube with the pot, as well as other weld-related weaknesses in welded cup spiral housings omitted in the invention, in particular the compound "pot / plant piping" can be realized via a screw connection of plant piping or discharge pipe with the pot as well as the other connections via appropriate fittings.
  • a required cross-sectional extension for pressure build-up and flow delay in a compressor stage can then be implemented in the plant piping or in the pressure nozzle tube.
  • the machining production method is a turning, a milling and / or a drilling. That is, the machining process on the blank may be a single, carried out on the blank machining process technology, such as a turning, milling or drilling, also the blank - in the machining process - by two or more different machining techniques, such as by turning and milling or by turning and drilling or by milling and drilling or by turning, milling and drilling.
  • the blank in its shape and / or dimension as possible to save material. That is, the blank should be sized in shape and / or dimension, that during the machining process as little as possible material is removed from the blank.
  • the blank in cross section has a substantially teardrop-shaped outer contour.
  • the blank contour is a% circle followed by a rectangle. Starting from such a blank mold, little material removal occurs during the machining.
  • substantially teardrop-shaped blank can be prepared by forging a body to a substantially cylindrical body in a die.
  • the pot is or is post-processed, for example by local (re) machining of an outer and / or an inner contour surface in the pot.
  • the pot spiral housing has a plant piping screwed to the pot, in particular a pressure pipe which is screwed to the pot, via which the inflow or outflow of the fluid of the turbomachine can be realized.
  • This plant piping or this discharge pipe can be designed as a diffuser to achieve a flow delay and pressure increase there.
  • cup spiral housing according to the invention installed as a receptacle for an impeller of a compressor stage and as a flow guide for a fluid in the compressor stage - in a Getriebeturboverêtr.
  • a gear box connection for example a collar, for a gear or pinion shaft driving the impeller can be screwed to the pot of the cup spiral housing.
  • This adjustment option can optionally replace the previous adjustment in this respect via lock and support blocks, which is particularly advantageous in turbomachines without parting line (stretch pinion shaft).
  • FIG. 1 shows a longitudinal section through a simplified illustrated part of a compressor stage 18 of a gear compressor 10 with a weld seam-free pot spiral housing 1 according to the invention with a manufactured by machining from a blank 3 pot. 2
  • the compressor stage 18 has a rotor or pinion shaft 19 rotating about an axis of rotation 22 and received in an axial bore 15 in the pot 2, at the one end of which is shown an impeller 20 is mounted.
  • gear box connection 8 in the form of a collar 8 is arranged on there axial end face of the pot 2.
  • the impeller 20 is by an axial inflow 12 by a fluid 11 (axially) flows and conveys the compressed fluid 11 radially outward into an annular space 23rd
  • the fluid 11 flows from the annular space 23 into a collecting space 25, collects there and enters via a flow opening 16 and a diffuser opening 16 in the pot 2 in a plant piping 4 a.
  • the plant piping 4 has a diffuser formed, with the pot 2 screwed to a screwing 17 on the pot 2 Druckstutzenrohr 5 (in the circumferential direction darg Robinson) with subsequent Druckstutzenflansch 6, via which the further compressed there fluid 11 leaves the compressor stage 18.
  • the collecting space 25 extending in the circumferential direction about the axis of rotation 22 is formed by means of the pot 2 and a spiral insert 7 inserted into a recess 9 or cylindrical bore 9 of the pot 2.
  • the - consisting of high-alloy steel - pot 2 is made by pure machining in a single machining operation in a machining center of a forged stock 3.
  • the outer surface of the blank 3 is in the machining process - depending on the shape of the blank 3 - turned off on the outer contour of the pot 2, milled and / or drilled.
  • the recess 9 in the pot 2 for the spiral insert 7 is drilled in the machining process.
  • the - slightly conical - diffuser opening 16 is also drilled.
  • the bore 15 for receiving the pinion shaft 19 is drilled.
  • the screwing surface 17 for screwing the pressure nozzle tube 5 on the pot 2 is milled.
  • the spiral insert 7 is like FIG. 1 shows so fitted in the pot 2 that the axial end face of the spiral insert 7 an enclosed space which forms the annular space 23 remains.
  • FIG. 3 show a side view ( FIG. 2 ) as well as a plan view ( FIG. 3 ) of or on the pot 2 according to the invention, produced by machining in a machining operation from a blank 3.
  • FIG. 3 In the representations of the pot 2 in 2 and FIG. 3 are sections IV-IV ( FIG. 3 ), VV ( FIG. 2 ), VI-VI ( FIG. 3 ) and VII-VII ( FIG. 2 ), whose sectional views in the FIG. 4 . 5, FIG. 6 and FIG. 7 are shown.
  • the pot 2 has - in the radial cross-section - a teardrop-shaped outer contour, which extends in the axial direction for the spatial formation of the pot 2.
  • the teardrop-shaped outer contour is formed by a% circle followed by a rectangle.
  • the recess 9 is inserted for receiving the spiral insert 7, whereby the pot 2 acquires its pot-shaped configuration; at the other axial end, the bore 15 for receiving the pinion shaft 19 is inserted into the pot 2.
  • the screwing surface 17 for plant piping 4 and the pressure nozzle tube 5 incorporated.
  • the screwing surface 17 is substantially rectangular, with a corner of the rectangle is rounded.
  • FIG. 8 shows a schematic representation of a blank 3 for the pot 2 according to the invention for the weld free pot spiral housing 1 in block design.
  • FIG. 8 shown blank 3 has in its outer contour a - like the pot 2 - drop-shaped shape or shape, which results in a% circle with subsequent square.
  • This teardrop-shaped blank 3 is made by forging a body 14 to a cylindrical base body 13 in the die.
  • the Verschraubungs character 17 for plant piping 4 and the discharge nozzle tube 5 is on the blank 3 GE or milled and optionally reworked by smoothing; Tapped holes 27 for the screws 21 of the screw connection of pressure pipe 5 and pot 2 are introduced into the screwing surface 17.
  • the cylindrical bore 9 and the recess 9 for receiving the spiral insert 7 in the tube 2 is drilled; the borehole walls of the recess 9 are optionally turned or smoothed.
  • the bore 15 for receiving the pinion shaft 19 is also drilled; the borehole wall of the bore 15 is optionally turned or smoothed.
  • the diffuser opening 16 for the outflow of the fluid 11 from the pot 2 into the discharge pipe 5 is also drilled; the borehole walls of the diffuser opening 16 are optionally turned or smoothed.
  • FIGS 9 to 11 show embodiments of the blank, which are not part of the present invention.
  • FIG. 9 and FIG. 10 show more different schematic representations of a blank 3 for a pot 2 for the weld free pot spiral housing 1 in block design.
  • FIG. 9 illustrated blank 3 for the pot 2 is a cuboid, forged solid material body or block with approximately rectangular cross-section.
  • blank 3 for the pot 2 is a cylindrical solid material body. This can be forged or off the shelf.
  • FIG. 11 shows a perspective view of the cylindrical blank 3 after FIG. 10 with - indicated - finished "fitted” finished pot 2.
  • the amount of material 26 removed during the machining of the blank 3 is limited to the drop-shaped blank 3 (FIG. FIG. 8 ), whereas the material 26 removed during the machining of the blank 3 is at its lowest in the cylindrical blank 3 (FIG. FIG. 10 ) is the largest. Accordingly, the blank weight of the cylindrical blank 3 is the largest, whereas it is the smallest in the teardrop-shaped blank 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Forging (AREA)

Claims (7)

  1. Procédé de fabrication d'un pot (2) pour un carter (1) à volute à pot pour un compresseur (10),
    dans lequel
    on fabrique le pot (2) par un procédé de fabrication avec enlèvement de copeaux à partir d'une pièce tubulaire,
    caractérisé en ce que
    la pièce (3) tubulaire a, en section transversale, un contour extérieur sensiblement en forme de goutte.
  2. Procédé suivant la revendication 1,
    caractérisé en ce que
    le procédé de fabrication avec enlèvement de copeaux est un tournage, un fraisage et/ou un alésage.
  3. Procédé suivant au moins la revendication précédente,
    caractérisé en ce que
    on fabrique la pièce (3) tubulaire sensiblement en forme de goutte en section transversale, dans une étampe par forgeage d'un corps sur un corps de base sensiblement cylindrique.
  4. Carter (1) à volute à pot d'un turbocompresseur (10) à engrenage,
    caractérisé en ce que le carter (1) à volute à pot a un pot (2) ayant un contour extérieur en forme de goutte qui est fabriqué suivant au moins l'une des revendications de procédé précédent.
  5. Carter (1) à volute à pot suivant la revendication 4, caractérisé par une tuyauterie (4) d'installation vissée au pot (2), notamment une tubulure (5) tenant la pression et vissé au pot (2).
  6. Carter (1) à volute à pot suivant au moins l'une des revendications de dispositif précédentes,
    caractérisé par une surface de contour extérieur usinée du pot (2), par laquelle une canalisation (4) d'installation, notamment une tubulure (5) tenant la pression, peut être vissée au pot (2).
  7. Turbocompresseur (10) à engrenage ayant un carter (1) à volute à pot suivant au moins l'une des revendications de dispositif précédentes, ainsi qu'une liaison (8) de carter de boîte d'engrenage vissée au carter (1) à volute à pot, notamment un collet (8) vissé au pot (2) du carter (1) à volute à pot.
EP13765979.3A 2012-10-16 2013-09-16 Carter à volute de pot sans soudure Not-in-force EP2885544B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012218800 2012-10-16
PCT/EP2013/069171 WO2014060163A1 (fr) 2012-10-16 2013-09-16 Carter à volute de pot sans soudure

Publications (2)

Publication Number Publication Date
EP2885544A1 EP2885544A1 (fr) 2015-06-24
EP2885544B1 true EP2885544B1 (fr) 2016-11-30

Family

ID=49230712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13765979.3A Not-in-force EP2885544B1 (fr) 2012-10-16 2013-09-16 Carter à volute de pot sans soudure

Country Status (6)

Country Link
US (1) US20150260197A1 (fr)
EP (1) EP2885544B1 (fr)
CN (1) CN104718380B (fr)
IN (1) IN2015DN02442A (fr)
RU (1) RU2630950C2 (fr)
WO (1) WO2014060163A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223791A1 (de) 2017-12-27 2019-06-27 Siemens Aktiengesellschaft Wellendichtungsanordnung einer Turbomaschine, Turbomaschine
EP3594506A1 (fr) 2018-07-12 2020-01-15 Siemens Aktiengesellschaft Bague de contour pour un compresseur

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US4893986A (en) * 1979-10-29 1990-01-16 Rockwell International Corporation High-pressure high-temperature coal slurry centrifugal pump and let-down turbine
DE3232326C2 (de) * 1982-08-31 1985-10-03 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Topfgehäuse für Kreiselpumpen
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US6715288B1 (en) * 1999-05-27 2004-04-06 Borgwarner, Inc. Controllable exhaust gas turbocharger with a double-fluted turbine housing
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Also Published As

Publication number Publication date
RU2015114807A (ru) 2016-12-10
EP2885544A1 (fr) 2015-06-24
CN104718380B (zh) 2017-10-27
CN104718380A (zh) 2015-06-17
US20150260197A1 (en) 2015-09-17
WO2014060163A1 (fr) 2014-04-24
RU2630950C2 (ru) 2017-09-14
IN2015DN02442A (fr) 2015-09-04

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