EP2255075B1 - Divided turbomachine housing having optimized parting line flanges - Google Patents

Divided turbomachine housing having optimized parting line flanges Download PDF

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Publication number
EP2255075B1
EP2255075B1 EP09715711A EP09715711A EP2255075B1 EP 2255075 B1 EP2255075 B1 EP 2255075B1 EP 09715711 A EP09715711 A EP 09715711A EP 09715711 A EP09715711 A EP 09715711A EP 2255075 B1 EP2255075 B1 EP 2255075B1
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EP
European Patent Office
Prior art keywords
parting
joint
housing
turbomachine
inner part
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
EP09715711A
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German (de)
French (fr)
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EP2255075A1 (en
Inventor
Otmar Gossmann
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Siemens AG
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Siemens AG
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Publication date
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Priority to EP09715711A priority Critical patent/EP2255075B1/en
Publication of EP2255075A1 publication Critical patent/EP2255075A1/en
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Publication of EP2255075B1 publication Critical patent/EP2255075B1/en
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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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/243—Flange connections; Bolting arrangements
    • 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
    • F05D2240/00—Components
    • F05D2240/55—Seals
    • 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
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the invention relates to a turbomachinery housing with a parting line, wherein the turbomachinery housing has a small part gap leakage at the parting line.
  • a turbomachine for example a gas turbine, has a housing that is designed to be horizontally and / or vertically split for reasons of mounting the gas turbine.
  • the divided gas turbine housing has, for example, an upper part and a lower part, which are assembled to form a parting line.
  • Fig. 8 the area of the parting line of a known turbine engine housing 101 is shown in cross section.
  • the turbomachine housing 101 has an upper part 102 and a lower part 103, which together form a parting line 104.
  • the turbomachine housing 101 is usually pressurized, so that on the inner side 105 of the turbomachine housing 101, a higher gas pressure prevails, compared with the outer side 106th
  • a top flange 107 and analogously, a lower flange 108 is formed on the parting line 104 on the lower part 103, wherein the two flanges 107, 108 form the parting line 104 on their sides facing each other.
  • a flange hole 109 is provided, through which a parting screw bolt 110 is inserted.
  • the part-joint screw bolt 110 protrudes from the upper flange 107 and the lower flange 108, respectively, and the split-joint screw bolt 110 has a threaded portion 111 at its outer portions, respectively.
  • the parting line 104 is as gas-tight as possible, so that the gas leakage occurring during operation of the turbomachine by the parting line 104 from the inside 105 to the outside 106 is as small as possible.
  • the reason for the gas leakage is in particular the time-delayed and non-uniform heating of the flanges 107, 108 together with the part-joint screw bolt 110, with the nuts 113 and the washers 114 in the transient operation of the turbomachine.
  • the partial joint screw bolt 110 is affected by the delayed heating, since it is structurally positioned generally far away from the location of the heat input and can be heated only via small contact surfaces on the threaded portions 111.
  • the gas leakage in the region of the turbomachine housing 101, at which a plurality of parting lines 104 intersect, is great.
  • the wall thickness of the turbomachine housing 101 is particularly large for each parting line 104, so that large temperature differences can occur in the material in the intersection region during startup of the turbomachine.
  • no optimal screwing density can be provided by the partial joint screw bolts 110 due to screw collisions. Therefore, the crossing area is characterized by particularly high rates of gas leakage.
  • the partial joint screw bolt 110 undergoes cold bending in addition to pure tensile forces and a bending stress that amplifies the uneven thermal expansion in the region of the parting line 104.
  • a correspondingly stable design of the screw and a correspondingly thick design of the upper flange 107 and the lower flange 108 is provided.
  • a housing for a turbomachine with two adjacent housing shells known.
  • a positive connection by means of a bridge which clamps the two shells together, provided on the outside of the housing.
  • the object of the invention is to provide a turbomachinery housing with a parting line, wherein the turbomachinery housing has a low gas leakage at the parting line.
  • the turbomachine housing according to the invention with a parting line has a first housing part with a first parting line bead formed on the parting line, a second housing part with a second parting line bulge formed on the parting line and a plurality of part joint clips, wherein the first parting bead together with the second parting line bead are encompassed by the parting joint clamps, so that the first and the second housing part are held together by the parting joint clamps by means of a positive connection at the Generalfugenwggsten.
  • the wall thickness distribution of the turbomachine housing is uniform, whereby a transient heating of the turbomachine housing, especially when starting the turbomachine, is more uniform and faster.
  • only weak temperature gradients occur in the material of the turbomachine housing, which in particular lead to no or a weak fault in the area of the parting line of the turbomachine housing. Since large distortions could lead to gas leakage of the turbomachine housing, it is inventively achieved that the turbomachinery housing in the parting line area has a low leakage rate.
  • the turbomachine housing according to the invention has a low weight, which results in low material costs during manufacture.
  • the turbomachine can drive fast starting gradients without leaks in the parting line area occurring on the turbomachine housing according to the invention.
  • each sectionfugenwulst extends both inside and outside of the turbomachinery housing and each part of the joint clamp has an inner part and an outer part, wherein the inner part engages the inner portions of the Generalfugenwülste and the outer part on the outer portions of the Generalfugenwülste.
  • the part-joint bracket has a single inner part and a single outer part, or a single inner part and a plurality of outer parts, or a plurality of inner parts and a single outer part.
  • the turbomachine housing has at least one parting hole and the parting joint clamp has at least one retaining means extending through the parting hole and both the inner part and the outer part is fastened, so that the inner part and the outer part are held by the holding means to the Operafugenwülste and cooperate with them such a form-fitting manner that the housing parts are compressed at the parting line of the parting joint clamp.
  • a bead flank is provided on the inner and outer portions of the Generalfugenwülste and the inner part with the inner Wulstflanken cooperating clamp edges and the outer part with the outer Wulstflanken cooperating clamp edges, wherein the bead flanks and the clamp edges are arranged inclined in that, when the inner part and the outer part are held together by the retaining means, the part-joint beads are compressed by the part-joint clip.
  • the holding means on a retaining screw which is arranged plugged through the parting hole and with the inner part and the outer part in each case forms a screw connection.
  • the holding means has a screw pattern, wherein the retaining screw is screwed into a threaded hole of the inner part and is inserted through a through-hole of the outer part and is screwed by means of the nut from outside of the turbomachine housing.
  • the nut is easily accessible from outside the turbomachine housing, wherein the mounting of the parting joint clamp is easy and fast accomplished.
  • a washer is arranged between the nut and the outer part.
  • the tightening force of the nut is preferably evenly distributed to the outer part.
  • turbomachinery housing has a leakage at the parting line.
  • the parting line is a horizontal parting joint and preferably the parting joint clip is arranged to hold the horizontal parting joint together.
  • the parting line is preferably a vertical parting joint
  • the parting-up clip is preferably configured to hold the vertical parting joint together.
  • the horizontal parting line and the vertical parting line intersect and at the intersecting point, there is provided a cross-membered joint bracket integrally formed by two parting-joint brackets provided inside and outside opposite each other at the crossing point and two for the vertical-parting-joint provided part joint brackets, which are arranged opposite each other at the crossing point.
  • the vertical parting joint and the horizontal parting joint of the cross-part joint clamp are effectively and tightly held together at the intersection.
  • the wall thicknesses of the turbomachinery housing in the region of the crossing point are not excessively strong, so that the turbomachinery housing can be rapidly heated, in particular in the area of the crossing point.
  • a turbomachinery housing on the horizontal parting and on the vertical parting, for example, with a conventional parting joint is provided, wherein the cross-member joint clip according to the invention is provided in the region of the crossing point.
  • the conventional part-joint connection and the cross-part joint clip according to the invention are provided on the turbomachinery housing.
  • a turbomachinery housing 1 a first housing part 2, a second housing part 3, a third housing part 4 and a fourth housing part 5 on.
  • the first housing part 2 and the third housing part 4 form, in Fig. 2 to 5 seen, the upper housing half of the turbomachine housing 1 and the second housing part 3 and the fourth housing part 5 form, in Fig. 2 to 5 seen, the lower half of the turbomachine housing 1, wherein the first housing part 2 and the second housing part 3 together with the third housing part 4 and the fourth housing part 5 form a horizontal parting line 7.
  • the turbomachinery housing 1 has a vertical parting line 6, which is formed by the first housing part 2 and the third housing part 4 together with the second housing part 3 and the fourth housing part 5.
  • the vertical parting line 6 and the horizontal parting line 7 intersect.
  • the vertical parting line 6 is held together by a plurality of vertical part jointing clips 8 and the horizontal parting line 7 is held together by a plurality of horizontal parting joint clips 9.
  • the vertical part joint clips 8 are arranged next to one another in a row along the vertical part joint 6 and the horizontal part joint clips 9 are arranged side by side in a row along the horizontal part joint 7.
  • a cross-part joint clip 10 is provided.
  • the first housing part 2 has at the vertical parting line 6 a first parting line 11 and in the region of the horizontal parting line 7 a third parting line 13.
  • a second Operafugenwulst 12 and at the horizontal parting line 7, a fifth Operafugenwulst 15 is formed on the second housing part 3 at the vertical parting line 6.
  • the third housing part 4 and the fourth housing part 5 are provided with Sectionfugenwggsten
  • the third housing part 4 at the horizontal parting line 7 a fourth sectionfugenwulst 14 and the horizontal parting line 6
  • the fourth housing part 5 at the vertical parting line 6 an eighth
  • Compart 16 has a sixth
  • Comparfugenwulst 11 to 18 in this case comprises a protruding from the outer surface of the corresponding housing part and a region protruding from the inner surface.
  • the part-joint brackets 8, 9, 10 each have an inner part 19 and an outer part 20, wherein the inner part engages around the inside of the turbomachinery housing 1 portion of the Operafugenwülste positive and the outer part 20 the outside of the turbomachinery housing 1 lying areas of the parting beads engages positively.
  • each parting line 6, 7 has a part-joint hole 23, which is provided centrally on the parting line 6, 7. In alignment with the parting hole 23 is the turbo machine housing 1 facing in the inner part 19, a threaded hole 21 is provided. Further, a through-hole 22 is provided with the threaded hole 21 and the parting hole 23 in alignment in the outer part 20.
  • a cross hole 24 is provided in the turbomachine housing 1, the longitudinal axis of which lies at the intersection of the horizontal parting line 7 and the vertical parting line 6.
  • a through hole 22 is provided for the cross hole 24 in the inner part 19 of the Wienteilfugenklammer 10 and in the outer part 20 of the Wienteilfugenklammer 10, wherein the threaded hole 21, the through hole 22 and the cross hole 24th aligned with each other.
  • the retaining screw 25 has a first threaded portion 26 and a second threaded portion 27, wherein between the first threaded portion 26 and the second threaded portion 27, a strain shaft 28 may be provided.
  • the retaining screw 25 is inserted into the holes 21 to 23 such that the first threaded portion 26 engages in the threaded hole 21 forming a screw, the second threaded portion 27 protrudes from the outer part 20 to the outside of the turbomachinery housing 1 and the expansion shaft 28 between the Operafugenwülsten eleventh is arranged to 18.
  • a nut 29 is screwed with a washer 30, so that when tightening the nut 29, the inner part 19 and the outer part 20 of the nut 29 to the Generalfugenwülste 11 to 18 is pressed.
  • two or more retaining screws 25 may be provided per part of the joint bracket, which may also be arranged eccentrically, ie, outside of the parting line.
  • the turbomachinery housing 1 is formed on the Operafugenwggsten 11 to 18 in cross-section T-shaped, wherein the Generalfugenwggste 11 to 18 facing away from the parting holes 23 sides bead flanks 31 have.
  • the inner bead flanks are formed substantially parallel to the longitudinal axis of the parting line hole 23, wherein the bead flanks 31 are arranged sloping sloping away from the turbomachine housing 1 toward the parting hole 23.
  • the inner part 19 and the outer part 20 are C-shaped and surround the Operafugenwülste 11 to 18 at their Wulstflanken 31. With the Wulstflanken 31 cooperating, the inner part 19 and the outer part 20 each have clamping edges 32, which are formed parallel to the bead flanks 31 ,
  • the procedure is as follows: First, the inner part 19 is to be applied to the inner portion of the sectionfugenwülste 11 to 18 so that the inner part 19 rests with its clamp edges 32 on the bead flanks 31. Then, the retaining screw 25 is stuck through the parting hole 23 and the cross hole 24 and screwed in the threaded hole 21 with the first threaded portion 26 on the inner part 19.
  • the nut 29 is screwed together with the washer 30.
  • the nut 29 is to be tightened so far characterized in that the inner part 19 and the outer part 20 is pressed against the sectionfugenwülste 11 to 18, wherein by the sliding side of the Wulstflanken 31 and the clamp edges 32 and caused by the inclined arrangement of the flanks 31, 32 with respect to the longitudinal axis of the retaining screw 25, the housing parts 2 to 5 are compressed at the parting lines 6, 7.
  • the vertical parting joint 6 is held in a form-fitting manner, for example, on the vertical parting line 6 in the horizontal direction 36.
  • the force flow 34 formed in the region of the parting lines 6, 7 of the turbomachine housing 1 is symmetrical, so that in the area of the parting lines 6, 7 the turbomachine housing 1 and the retaining screws 25 are not subjected to bending stress.
  • a seal 33 is provided between the inner part 19 and the inner portion of the Operafugenwülste 11 to 18, whereby the interior of the turbomachine housing 1 is closed to the outside gas-tight.

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

Abstract

The housing (1) has a pair of housing parts (2, 3) including a pair of casing joint rims (11, 12) formed on a casing joint (6), and a set of casing joint fasteners (8). The rims are encompassed by the fasteners, so that the housing parts of the fasteners are held together by a form fit connection at the rims. The rims extend inside and outside the housing, and the fasteners have an inner part (19) and an outer part (20). The inner part engage at an inner lying section of the rims and the outer part engage at an outer lying section of the rims.

Description

Die Erfindung betrifft ein Turbomaschinengehäuse mit einer Teilfuge, wobei das Turbomaschinengehäuse an der Teilfuge eine geringe Teilfugenleckage hat.The invention relates to a turbomachinery housing with a parting line, wherein the turbomachinery housing has a small part gap leakage at the parting line.

Eine Turbomaschine, beispielsweise eine Gasturbine, weist ein Gehäuse auf, das aus Gründen der Montierbarkeit der Gasturbine horizontal und/oder vertikal geteilt ausgeführt ist. Das geteilte Gasturbinengehäuse weist beispielsweise ein Oberteil und ein Unterteil auf, die unter Ausbilden einer Teilfuge zusammengesetzt sind.A turbomachine, for example a gas turbine, has a housing that is designed to be horizontally and / or vertically split for reasons of mounting the gas turbine. The divided gas turbine housing has, for example, an upper part and a lower part, which are assembled to form a parting line.

In Fig. 8 ist im Querschnitt der Bereich der Teilfuge eines bekannten Turbinenmaschinengehäuses 101 gezeigt. Das Turbomaschinengehäuse 101 weist ein Oberteil 102 und ein Unterteil 103 auf, die zusammen eine Teilfuge 104 bilden. Beim Betrieb der Turbomaschine ist das Turbomaschinengehäuse 101 in der Regel druckführend, so dass an der Innenseite 105 des Turbomaschinengehäuses 101 ein höherer Gasdruck herrscht, verglichen mit der Außenseite 106.In Fig. 8 the area of the parting line of a known turbine engine housing 101 is shown in cross section. The turbomachine housing 101 has an upper part 102 and a lower part 103, which together form a parting line 104. During operation of the turbomachine, the turbomachine housing 101 is usually pressurized, so that on the inner side 105 of the turbomachine housing 101, a higher gas pressure prevails, compared with the outer side 106th

An der Teilfuge 104 ist an dem Oberteil 102 ein Oberflansch 107 und analog ist an der Teilfuge 104 an dem Unterteil 103 ein Unterflansch 108 ausgebildet, wobei die beiden Flansche 107, 108 an ihren einander zugewandten Seiten die Teilfuge 104 bilden. Sowohl durch den Oberflansch 107 als auch durch den Unterflansch 108 ist ein Flanschloch 109 vorgesehen, durch das ein Teilfugenschraubenbolzen 110 eingesteckt ist. Der Teilfugenschraubenbolzen 110 steht jeweils von dem Oberflansch 107 und dem Unterflansch 108 vor, wobei der Teilfugenschraubenbolzen 110 an seinen außenliegenden Bereichen jeweils einen Gewindeabschnitt 111 hat. Zwischen den Gewindeabschnitten 111 ist der Teilfugenschraubenbolzen 110 mit einem Dehnschaft 112 versehen. An den Gewindeabschnitten 111 ist jeweils eine Schraubenmutter 113 mit einer Unterlegscheibe 114 aufgeschraubt, so dass mit der dadurch hergestellten Schraubenverbindung der Oberflansch 107 und der Unterflansch 108 aneinandergedrückt werden. Der in dem Oberteil 102, dem Unterteil 103, dem Teilfugenschraubenbolzen 110, den Schraubenmuttern 113 und den Unterlegscheiben 114 auftretende Kraftfluss ist mit Pfeilen 115 schematisch gezeigt.At the parting line 104 is on the upper part 102, a top flange 107 and analogously, a lower flange 108 is formed on the parting line 104 on the lower part 103, wherein the two flanges 107, 108 form the parting line 104 on their sides facing each other. Both through the upper flange 107 and through the lower flange 108, a flange hole 109 is provided, through which a parting screw bolt 110 is inserted. The part-joint screw bolt 110 protrudes from the upper flange 107 and the lower flange 108, respectively, and the split-joint screw bolt 110 has a threaded portion 111 at its outer portions, respectively. Between the threaded portions 111 of the parting screw bolt 110 with a Dehnschaft 112 provided. At the threaded portions 111, a nut 113 is screwed with a washer 114, so that with the screw connection produced thereby, the upper flange 107 and the lower flange 108 are pressed against each other. The force flow occurring in the upper part 102, the lower part 103, the part-joint screw bolt 110, the nuts 113 and the washers 114 is shown schematically by arrows 115.

Durch die von den Teilfugenschraubenbolzen 110 an dem Oberflansch 107 und dem Unterflansch 108 hergestellte Schraubenverbindung sind die beiden Flansche 107, 108 in Horizontalrichtung 116 kraftschlüssig miteinander befestigt.By the screw connection produced by the part-joint screw bolts 110 on the upper flange 107 and the lower flange 108, the two flanges 107, 108 are fastened to one another in the horizontal direction 116 in a force-fit manner.

Wünschenswert ist es, dass die Teilfuge 104 möglichst gasleckagearm ist, so dass die beim Betrieb der Turbomaschine durch die Teilfuge 104 auftretende Gasleckage von der Innenseite 105 zu der Außenseite 106 möglichst gering ist.It is desirable that the parting line 104 is as gas-tight as possible, so that the gas leakage occurring during operation of the turbomachine by the parting line 104 from the inside 105 to the outside 106 is as small as possible.

Ursache für die Gasleckage ist insbesondere die zeitlich verzögerte und ungleichförmige Durchwärmung der Flansche 107, 108 zusammen mit dem Teilfugenschraubenbolzen 110, mit den Schraubenmuttern 113 und den Unterlegscheiben 114 im instationären Betrieb der Turbomaschine. Insbesondere ist der Teilfugenschraubenbolzen 110 von der verzögerten Erwärmung betroffen, da er konstruktiv bedingt im Allgemeinen weit vom Ort des Wärmeeintrags entfernt positioniert ist und lediglich über kleine Kontaktflächen an den Gewindeabschnitten 111 aufgeheizt werden kann.The reason for the gas leakage is in particular the time-delayed and non-uniform heating of the flanges 107, 108 together with the part-joint screw bolt 110, with the nuts 113 and the washers 114 in the transient operation of the turbomachine. In particular, the partial joint screw bolt 110 is affected by the delayed heating, since it is structurally positioned generally far away from the location of the heat input and can be heated only via small contact surfaces on the threaded portions 111.

Insbesondere im Gehäusebereich, der innenseitig mit Verdichteraustrittsbedingungen beaufschlagt ist, treten beim Kaltstart extrem große Temperaturunterschiede zwischen dem Oberflansch 107 bzw. dem Unterflansch 108 und dem Dehnschaft 112 auf. Diese Temperaturunterschiede führen zu entsprechend großen Unterschieden in der Wärmedehnung der betroffenen Bauteile. Als Folge hiervon tritt beim allerersten Anfahren der Turbomaschine ein einmaliges Überrecken des Teilfugenschraubenbolzens 110 auf, das zu einer permanenten Reduktion der Vorspannung des Teilfugenschraubenbolzens 110 und somit eine Verringerung der Flächenpressung an der Teilfuge 104 zur Folge hat. Zusätzlich verformen sich der Oberflansch 107 und der Unterflansch 108 gegeneinander aufgrund ihrer inhomogenen Durchwärmung, was in Kombination mit der reduzierten Vorspannung des Teilfugenschraubenbolzens 110 zu einer Klaffung an der Teilfuge 104 führt. Dadurch tritt an der Teilfuge 104 eine Gasleckage auf.Especially in the housing area, which is acted upon on the inside with compressor outlet conditions, occur during cold start extremely large temperature differences between the upper flange 107 and the lower flange 108 and the expansion shaft 112. These temperature differences lead to correspondingly large differences in the thermal expansion of the affected components. As a consequence of this occurs at the very first start of the turbomachine a one-time stretching the Teilfugenschraubenbolzens 110, which results in a permanent reduction of the bias of the parting screw bolt 110 and thus a reduction in the surface pressure at the parting line 104 result. In addition, the upper flange 107 and the lower flange 108 deform against each other due to their inhomogeneous heating, which in combination with the reduced bias of the parting screw bolt 110 leads to a gap on the parting line 104. As a result, gas leakage occurs at the parting line 104.

Insbesondere groß ist die Gasleckage im Bereich des Turbomaschinengehäuses 101, an dem sich mehrere Teilfugen 104 kreuzen. Im Kreuzungsbereich ist aufgrund des Vorsehens von Oberflanschen 107 und Unterflanschen 108 für jede Teilfuge 104 die Wandstärke des Turbomaschinengehäuses 101 besonders groß, so dass in dem Kreuzungsbereich große Temperaturdifferenzen beim Anfahren der Turbomaschine in dessen Material auftreten können. Hinzu kommt, dass wegen der geometrisch beengten Verhältnisse keine optimale Verschraubungsdichte von den Teilfugenschraubenbolzen 110 aufgrund von Verschraubungskollisionen vorgesehen werden kann. Daher ist der Kreuzungsbereich durch besonders hohe Raten von Gasleckage gekennzeichnet.In particular, the gas leakage in the region of the turbomachine housing 101, at which a plurality of parting lines 104 intersect, is great. In the crossing region, due to the provision of upper flanges 107 and lower flanges 108, the wall thickness of the turbomachine housing 101 is particularly large for each parting line 104, so that large temperature differences can occur in the material in the intersection region during startup of the turbomachine. In addition, because of the geometrically cramped conditions, no optimal screwing density can be provided by the partial joint screw bolts 110 due to screw collisions. Therefore, the crossing area is characterized by particularly high rates of gas leakage.

Insbesondere geht die Entwicklung von modernen Gasturbinen dahin, dass das Verdichtungsverhältnis gegenüber heute üblichen Faktoren um 1,5 bis 2 deutlich erhöht werden soll. Die daraus resultierenden noch höheren Flanschkräfte sowie die noch höheren Verdichteraustrittstemperaturen hätten zur Folge, dass bei dem modernen Turbomaschinengehäuse mit der herkömmlichen Ausführung an der Teilfuge 104 mit dem Oberflansch 107, dem Unterflansch 108 und dem Teilfugenschraubenbolzen 110 mit höheren Gasleckageraten zu rechnen wäre. Außerdem müssten der Oberflansch 107 und der Unterflansch 108 größer dimensioniert und aus einem hochwertigeren Material hergestellt sein, um die zu erwartende höhere Verdichteraustrittstemperatur und den erhöhten Druck zu beherrschen. Beide Maßnahmen führen zu einer Kostensteigerung und zu einer Verschlechterung der Randbedingungen für die herkömmliche Flanschkonstruktion, da ein noch längerer Wärmetransportweg und eine daraus resultierende noch ungleichmäßigere Erwärmung gepaart mit einem noch größeren Vorspannverlust des Teilfugenschraubenbolzens einhergehen würde.In particular, the development of modern gas turbines is that the compression ratio compared to today's usual factors by 1.5 to 2 should be significantly increased. The resulting even higher flange forces and the even higher compressor outlet temperatures would have the consequence that would be expected in the modern turbomachinery housing with the conventional design on the parting line 104 with the upper flange 107, the lower flange 108 and the parting screw bolt 110 with higher gas leakage rates. In addition, the top flange 107 and bottom flange 108 would have to be sized larger and made of a higher quality material to handle the expected higher compressor exit temperature and pressure. Both measures lead to an increase in costs and a worsening of the boundary conditions for the conventional ones Flange construction, as would be accompanied by an even longer heat transport path and a resulting even more irregular heating paired with an even greater bias loss of Teilbugenschraubenbolzens.

Ferner hat das Turbomaschinengehäuse 101 im Bereich der Teilfuge 104 den Kraftfluss 115, der asymmetrisch ist. Dadurch erfährt der Teilfugenschraubenbolzen 110 beim Kaltstart neben reinen Zugkräften auch eine Biegebeanspruchung, die die ungleiche Wärmedehnung im Bereich der Teilfuge 104 verstärkt. Um der Biegebeanspruchung des Teilfugenschraubenbolzens 110 Rechnung zu tragen, ist eine entsprechend stabile Auslegung der Verschraubung und eine entsprechend dicke Ausführung des Oberflanschs 107 und des Unterflanschs 108 vorzusehen. Dies hätte jedoch zur Folge, dass die ungleichförmige Temperaturverteilung im Teilfugenbereich sich weiter verschlechtert.Furthermore, the turbomachinery housing 101 in the region of the parting line 104, the power flow 115, which is asymmetrical. As a result, the partial joint screw bolt 110 undergoes cold bending in addition to pure tensile forces and a bending stress that amplifies the uneven thermal expansion in the region of the parting line 104. In order to take into account the bending stress of the parting screw bolt 110, a correspondingly stable design of the screw and a correspondingly thick design of the upper flange 107 and the lower flange 108 is provided. However, this would mean that the non-uniform temperature distribution in the joint area further deteriorated.

Des Weiteren ist beispielsweise aus der EP 1 707 759 A2 ein Gehäuse für eine Turbomaschine mit zwei aneinanderliegenden Gehäuseschalen bekannt. Um im Betrieb der Maschine eine asymmetrische Verformung des Gehäuses zu vermeiden, ist eine formschlüssige Verbindung mittels einer Brücke, welche die beiden Schalen miteinander verklammert, an der Gehäuseaußenseite vorgesehen.Furthermore, for example, from the EP 1 707 759 A2 a housing for a turbomachine with two adjacent housing shells known. In order to avoid an asymmetric deformation of the housing during operation of the machine, a positive connection by means of a bridge, which clamps the two shells together, provided on the outside of the housing.

Weiter ist in der Auslegeschrift DE 1 160 701 eine Verbindung von Gehäuseteilen eines Hochdruckgefäßen offenbart, die neben einer üblichen äußeren Flanschverschraubung eine Klammerung mit Keilanzug an der Innenseite des Gehäuses aufweist.Next is in the layout DE 1 160 701 discloses a connection of housing parts of a high-pressure vessels, which in addition to a conventional outer Flanschverschraubung a bracket with wedge suit on the inside of the housing.

Aufgabe der Erfindung ist es, ein Turbomaschinengehäuse mit einer Teilfuge zu schaffen, wobei das Turbomaschinengehäuse an der Teilfuge eine geringe Gasleckage hat.The object of the invention is to provide a turbomachinery housing with a parting line, wherein the turbomachinery housing has a low gas leakage at the parting line.

Das erfindungsgemäße Turbomaschinengehäuse mit einer Teilfuge weist auf ein erstes Gehäuseteil mit einer an der Teilfuge ausgebildeten ersten Teilfugenwulst, ein zweites Gehäuseteil mit einer an der Teilfuge ausgebildeten zweiten Teilfugenwulst und eine Mehrzahl von Teilfugenklammern, wobei die erste Teilfugenwulst zusammen mit der zweiten Teilfugenwulst von den Teilfugenklammern umgriffen sind, so dass das erste und das zweite Gehäuseteil von den Teilfugenklammern mittels einer Formschlussverbindung an den Teilfugenwülsten zusammengehalten sind.The turbomachine housing according to the invention with a parting line has a first housing part with a first parting line bead formed on the parting line, a second housing part with a second parting line bulge formed on the parting line and a plurality of part joint clips, wherein the first parting bead together with the second parting line bead are encompassed by the parting joint clamps, so that the first and the second housing part are held together by the parting joint clamps by means of a positive connection at the Teilfugenwülsten.

Bei dem erfindungsgemäß symmetrisch konstruierten Teilfugenbereich des Turbomaschinengehäuses ist es unterbunden, dass im Teilfugenbereich große Wandstärken vorzusehen sind. Dadurch ist die Wandstärkenverteilung des Turbomaschinengehäuses gleichmäßiger, wodurch eine instationäre Erwärmung des Turbomaschinengehäuses, insbesondere beim Anfahren der Turbomaschine, gleichmäßiger und schneller vonstatten geht. Dadurch treten in dem Material des Turbomaschinengehäuses lediglich schwache Temperaturgradienten auf, die insbesondere zu keiner oder einer schwachen Verwerfung im Bereich der Teilfuge des Turbomaschinengehäuses führen. Da große Verwerfungen zu einer Gasleckage des Turbomaschinengehäuses führen könnten, ist es erfindungsgemäß erreicht, dass das Turbomaschinengehäuse im Teilfugenbereich eine geringe Leckagerate hat. Außerdem hat das erfindungsgemäße Turbomaschinengehäuse ein geringes Gewicht, wodurch bei der Herstellung geringe Materialkosten anfallen. Außerdem können mit der Turbomaschine schnelle Anfahrgradienten gefahren werden, ohne dass an dem erfindungsgemäßen Turbomaschinengehäuse Leckagen im Teilfugenbereich auftreten.In the invention symmetrically constructed part of the joint region of the turbomachine housing, it is prevented that large wall thicknesses are to be provided in the parting joint area. As a result, the wall thickness distribution of the turbomachine housing is uniform, whereby a transient heating of the turbomachine housing, especially when starting the turbomachine, is more uniform and faster. As a result, only weak temperature gradients occur in the material of the turbomachine housing, which in particular lead to no or a weak fault in the area of the parting line of the turbomachine housing. Since large distortions could lead to gas leakage of the turbomachine housing, it is inventively achieved that the turbomachinery housing in the parting line area has a low leakage rate. In addition, the turbomachine housing according to the invention has a low weight, which results in low material costs during manufacture. In addition, the turbomachine can drive fast starting gradients without leaks in the parting line area occurring on the turbomachine housing according to the invention.

Erfindungsgemäß, erstreckt sich jede Teilfugenwulst sowohl nach innerhalb als auch nach außerhalb des Turbomaschinengehäuses und jede Teilfugenklammer weist ein Innenteil und ein Außenteil auf, wobei das Innenteil an den innenliegenden Abschnitten der Teilfugenwülste und das Außenteil an den außenliegenden Abschnitten der Teilfugenwülste angreift.According to the invention, each Teilfugenwulst extends both inside and outside of the turbomachinery housing and each part of the joint clamp has an inner part and an outer part, wherein the inner part engages the inner portions of the Teilfugenwülste and the outer part on the outer portions of the Teilfugenwülste.

Dadurch ist erfindungsgemäß konstruktiv bedingt erreicht, dass der Kraftfluss in der Wand des Turbomaschinengehäuses im Bereich der Teilfuge symmetrisch verläuft. Somit ist es unterbunden, dass die Teilfugenwülste eine Biegebeanspruchung erfahren und die Teilfugenklammern unterliegen nur geringen Biegespannungen.As a result, according to the invention, it is achieved by design that the force flow in the wall of the turbomachine housing runs symmetrically in the region of the parting line. Thus it is prevented that the Teilfugenwülste undergo a bending stress and the parting joint brackets are subject to only low bending stresses.

Ferner ist es bevorzugt, dass die Teilfugenklammer ein einziges Innenteil und ein einziges Außenteil, oder ein einziges Innenteil und eine Mehrzahl von Außenteilen, oder eine Mehrzahl von Innenteilen und ein einziges Außenteil aufweist.Further, it is preferable that the part-joint bracket has a single inner part and a single outer part, or a single inner part and a plurality of outer parts, or a plurality of inner parts and a single outer part.

Dadurch kann entsprechend je nach den Druckverhältnissen innerhalb des Turbomaschinengehäuses eine Aufteilung der Teilfugenklammern in Innenteile und Außenteile vorgenommen werden, so dass der Einsatz der Teilfugenklammern optimiert und somit die Herstellungskosten des Turbomaschinengehäuses minimiert sind.As a result, depending on the pressure conditions within the turbomachine housing, a division of the part-joint clamps into internal parts and outer parts can be carried out, so that the use of the part-joint clamps is optimized and thus the production costs of the turbomachine housing are minimized.

Außerdem ist es bevorzugt, dass an jeder Stelle der Teilfuge, an der eine der Teilfugenklammern angeordnet ist, das Turbomaschinengehäuse zumindest ein Teilfugenloch und die Teilfugenklammer zumindest ein Haltemittel aufweist, das in dem Teilfugenloch sich hindurch erstreckt und sowohl mit dem Innenteil als auch mit dem Außenteil befestigt ist, so dass von dem Haltemittel das Innenteil und das Außenteil an die Teilfugenwülste gehalten sind und mit ihnen derart formschlüssig zusammenwirken, dass die Gehäuseteile an der Teilfuge von der Teilfugenklammer zusammengedrückt sind.Moreover, it is preferred that at each location of the parting line on which one of the parting joint clamps is arranged, the turbomachine housing has at least one parting hole and the parting joint clamp has at least one retaining means extending through the parting hole and both the inner part and the outer part is fastened, so that the inner part and the outer part are held by the holding means to the Teilfugenwülste and cooperate with them such a form-fitting manner that the housing parts are compressed at the parting line of the parting joint clamp.

Bevorzugt ist außerdem, dass an den innenliegenden und an den außenliegenden Abschnitten der Teilfugenwülste jeweils eine Wulstflanke vorgesehen ist sowie das Innenteil mit den innenliegenden Wulstflanken zusammenwirkende Klammerflanken und das Außenteil mit den außenliegenden Wulstflanken zusammenwirkende Klammerflanken aufweist, wobei die Wulstflanken und die Klammerflanken derart geneigt angeordnet sind, dass beim Zusammenhalten des Innenteils und des Außenteils von dem Haltemittel die Teilfugenwülste von der Teilfugenklammer zusammengedrückt sind.It is also preferred that in each case a bead flank is provided on the inner and outer portions of the Teilfugenwülste and the inner part with the inner Wulstflanken cooperating clamp edges and the outer part with the outer Wulstflanken cooperating clamp edges, wherein the bead flanks and the clamp edges are arranged inclined in that, when the inner part and the outer part are held together by the retaining means, the part-joint beads are compressed by the part-joint clip.

Bevorzugt weist das Haltemittel eine Halteschraube auf, die durch das Teilfugenloch gesteckt angeordnet ist und mit dem Innenteil und dem Außenteil jeweils eine Schraubenverbindung ausbildet.Preferably, the holding means on a retaining screw which is arranged plugged through the parting hole and with the inner part and the outer part in each case forms a screw connection.

Dadurch ist vorteilhaft mit der Halteschraube das Innenteil von innen an das Turbomaschinengehäuse gedrückt und das Außenteil von außen an das Turbomaschinengehäuse gedrückt, wobei das Innenteil mit seinen Kammerflanken an den Wulstflanken der innenliegenden Abschnitte der Teilfugenwülste gedrückt ist und das Außenteil mit seinen Klammerflanken an die Wulstflanken der außenliegenden Abschnitte der Teilfugenwülste gedrückt ist. An den jeweils aneinanderliegenden Flanken sind das Innenteil und das Außenteil an den Teilfugenwülsten hin und weg gleitbar, so dass beim Anziehen der Halteschraube sowohl das Innenteil als auch das Außenteil an den Teilfugenwülsten derart verkeilt werden, dass die miteinander verklammerten Gehäuseteile an der Teilfuge flächig aneinandergepresst werden.This is advantageous pressed with the retaining screw, the inner part of the inside of the turbomachinery housing and the outer part pressed from the outside to the turbomachinery housing, the inner part is pressed with its chamber flanks on the bead flanks of the inner portions of the Teilfugenwülste and the outer part with its clamp edges on the bead flanks outer portions of the Teilfugenwülste is pressed. At the respective adjacent flanks, the inner part and the outer part of the Teilfugenwülsten back and forth are slidable, so that when tightening the retaining screw both the inner part and the outer part are wedged to the Teilfugenwülsten such that the mutually clamped housing parts are pressed against each other flat on the parting line ,

Bevorzugt weist das Haltemittel ein Schraubenmuster auf, wobei die Halteschraube in ein Gewindeloch des Innenteils geschraubt ist und durch ein Durchsteckloch des Außenteils gesteckt ist sowie mittels der Schraubenmutter von außerhalb des Turbomaschinengehäuses festgeschraubt ist.Preferably, the holding means has a screw pattern, wherein the retaining screw is screwed into a threaded hole of the inner part and is inserted through a through-hole of the outer part and is screwed by means of the nut from outside of the turbomachine housing.

Dadurch ist von außerhalb des Turbomaschinengehäuses die Schraubenmutter gut zugänglich, wobei die Montage der Teilfugenklammer einfach und schnell bewerkstelligbar ist.As a result, the nut is easily accessible from outside the turbomachine housing, wherein the mounting of the parting joint clamp is easy and fast accomplished.

Ferner ist bevorzugt, dass zwischen der Schraubenmutter und dem Außenteil eine Unterlegscheibe angeordnet ist.Furthermore, it is preferred that a washer is arranged between the nut and the outer part.

Danach wird bevorzugt die Anzugskraft der Schraubenmutter auf das Außenteil gleichmäßig verteilt.Thereafter, the tightening force of the nut is preferably evenly distributed to the outer part.

Außerdem ist es bevorzugt, dass zwischen dem Innenteil und den innenliegenden Abschnitten der Teilfugenwülste eine Dichtung vorgesehen ist, so dass das Innere des Turbomaschinengehäuses nach außen abgedichtet ist.In addition, it is preferred that between the inner part and the inner portions of the Teilfugenwülste a seal is provided so that the interior of the turbomachine housing is sealed to the outside.

Dadurch ist es ferner unterbunden, dass an der Teilfuge das Turbomaschinengehäuse eine Leckage hat.As a result, it is also prevented that the turbomachinery housing has a leakage at the parting line.

Bevorzugt ist die Teilfuge eine Horizontalteilfuge und bevorzugt ist die Teilfugenklammer eingerichtet die Horizontalteilfuge zusammenzuhalten.Preferably, the parting line is a horizontal parting joint and preferably the parting joint clip is arranged to hold the horizontal parting joint together.

Alternativ ist bevorzugt die Teilfuge eine Vertikalteilfuge und bevorzugt ist die Teilfugenklammer eingerichtet die Vertikalteilfuge zusammenzuhalten.Alternatively, the parting line is preferably a vertical parting joint, and the parting-up clip is preferably configured to hold the vertical parting joint together.

Außerdem ist es bevorzugt, dass die Horizontalteilfuge und die Vertikalteilfuge sich kreuzen und am Kreuzungspunkt eine Kreuzteilfugenklammer vorgesehen ist, die einstückig gebildet ist von zwei für die Horizontalteilfuge vorgesehenen Teilfugenklammern, die innen und außen einander gegenüberliegend am Kreuzungspunkt angeordnet sind, und von zwei für die Vertikalteilfuge vorgesehenen Teilfugenklammern, die einander gegenüberliegend am Kreuzungspunkt angeordnet sind.In addition, it is preferable that the horizontal parting line and the vertical parting line intersect and at the intersecting point, there is provided a cross-membered joint bracket integrally formed by two parting-joint brackets provided inside and outside opposite each other at the crossing point and two for the vertical-parting-joint provided part joint brackets, which are arranged opposite each other at the crossing point.

Dadurch wird vorteilhaft erreicht, dass am Kreuzungspunkt die Vertikalteilfuge und die Horizontalteilfuge von der Kreuzteilfugenklammer effektiv und dicht zusammengehalten ist. Ferner sind insbesondere die Wandstärken des Turbomaschinengehäuses im Bereich des Kreuzungspunkts nicht übermäßig stark ausgeführt, so dass das Turbomaschinengehäuse insbesondere im Bereich des Kreuzungspunkts schnell durchwärmbar ist.As a result, it is advantageously achieved that the vertical parting joint and the horizontal parting joint of the cross-part joint clamp are effectively and tightly held together at the intersection. Furthermore, in particular, the wall thicknesses of the turbomachinery housing in the region of the crossing point are not excessively strong, so that the turbomachinery housing can be rapidly heated, in particular in the area of the crossing point.

Ferner treten aufgrund der erfindungsgemäßen Konstruktion der Kreuzteilfugenklammer im Bereich des Kreuzungspunktes keine Verschraubungskollisionen auf.Furthermore, due to the construction according to the invention of the cross-member joint clamp, no bolting collisions occur in the region of the crossing point.

Prinzipiell ist es vorteilhaft möglich, dass ein Turbomaschinengehäuses an der Horizontalteilfuge und an der Vertikalteilfuge beispielsweise mit einer herkömmlichen Teilfugenverbindung versehen ist, wobei im Bereich des Kreuzungspunkts die erfindungsgemäße Kreuzteilfugenklammer vorgesehen ist. Dadurch kann an dem Turbomaschinengehäuse sowohl die herkömmliche Teilfugenverbindung als auch die erfindungsgemäße Kreuzteilfugenklammer verwendet werden.In principle, it is advantageously possible that a turbomachinery housing on the horizontal parting and on the vertical parting, for example, with a conventional parting joint is provided, wherein the cross-member joint clip according to the invention is provided in the region of the crossing point. As a result, it is possible to use both the conventional part-joint connection and the cross-part joint clip according to the invention on the turbomachinery housing.

Im Folgenden wird ein bevorzugtes Ausführungsbeispiel des erfindungsgemäßen Turbomaschinengehäuses anhand der beigefügten schematischen Zeichnungen erläutert. Es zeigt:

Fig. 1
einen Querschnitt durch ein Turbomaschinenge- häuse im Bereich einer Teilfuge,
Fig. 2 - 7
eine perspektivische Darstellung des Turboma- schinengehäuses im Bereich der Horizontalteil- fuge, einer Vertikalteilfuge und im Bereich der Teilfugenkreuzung und
Fig. 8
einen Querschnitt durch ein herkömmliches Turbomaschinengehäuse im Bereich einer Teil- fuge.
In the following, a preferred embodiment of the turbomachine housing according to the invention will be explained with reference to the accompanying schematic drawings. It shows:
Fig. 1
a cross section through a turbomachinery housing in the region of a parting line,
Fig. 2-7
a perspective view of the turbomachine housing in the region of the horizontal part joint, a vertical parting and in the area of the parting junction and
Fig. 8
a cross section through a conventional turbomachinery housing in the region of a partial joint.

Wie es aus Fig. 1 bis 7 ersichtlich ist, weist ein Turbomaschinengehäuse 1 ein erstes Gehäuseteil 2, ein zweites Gehäuseteil 3, ein drittes Gehäuseteil 4 und ein viertes Gehäuseteil 5 auf. Das erste Gehäuseteil 2 und das dritte Gehäuseteil 4 bilden, in Fig. 2 bis 5 gesehen, die obere Gehäusehälfte des Turbomaschinengehäuses 1 und das zweite Gehäuseteil 3 und das vierte Gehäuseteil 5 bilden, in Fig. 2 bis 5 gesehen, die untere Gehäusehälfte des Turbomaschinengehäuses 1, wobei das erste Gehäuseteil 2 und das zweite Gehäuseteil 3 zusammen mit dem dritten Gehäuseteil 4 und dem vierten Gehäuseteil 5 eine Horizontalteilfuge 7 bilden. Ferner weist das Turbomaschinengehäuse 1 eine Vertikalteilfuge 6 auf, die von dem ersten Gehäuseteil 2 und dem dritten Gehäuseteil 4 zusammen mit dem zweiten Gehäuseteil 3 und dem vierten Gehäuseteil 5 gebildet ist. Die Vertikalteilfuge 6 und die Horizontalteilfuge 7 kreuzen sich. Außerdem weist das Turbomaschinengehäuse 1 in dem ersten Gehäuseteil 2 und dem zweiten Gehäuseteil 3 eine Gehäusestufe 37 auf, die von der Vertikalteilfuge 6 durchtrennt ist.Like it out Fig. 1 to 7 can be seen, a turbomachinery housing 1, a first housing part 2, a second housing part 3, a third housing part 4 and a fourth housing part 5 on. The first housing part 2 and the third housing part 4 form, in Fig. 2 to 5 seen, the upper housing half of the turbomachine housing 1 and the second housing part 3 and the fourth housing part 5 form, in Fig. 2 to 5 seen, the lower half of the turbomachine housing 1, wherein the first housing part 2 and the second housing part 3 together with the third housing part 4 and the fourth housing part 5 form a horizontal parting line 7. Furthermore, the turbomachinery housing 1 has a vertical parting line 6, which is formed by the first housing part 2 and the third housing part 4 together with the second housing part 3 and the fourth housing part 5. The vertical parting line 6 and the horizontal parting line 7 intersect. In addition, the turbomachinery housing 1 in the first housing part 2 and the second housing part 3, a housing stage 37, which is severed by the vertical parting line 6.

Die Vertikalteilfuge 6 ist von einer Mehrzahl von Vertikalteilfugenklammern 8 zusammengehalten und die Horizontalteilfuge 7 ist von einer Mehrzahl von Horizontalteilfugenklammern 9 zusammengehalten. Die Vertikalteilfugenklammern 8 sind nebeneinander in einer Reihe entlang der Vertikalteilfuge 6 angeordnet und die Horizontalteilfugenklammern 9 sind nebeneinander in einer Reihe entlang der Horizontalteilfuge 7 angeordnet.The vertical parting line 6 is held together by a plurality of vertical part jointing clips 8 and the horizontal parting line 7 is held together by a plurality of horizontal parting joint clips 9. The vertical part joint clips 8 are arranged next to one another in a row along the vertical part joint 6 and the horizontal part joint clips 9 are arranged side by side in a row along the horizontal part joint 7.

Im Kreuzungsbereich der Vertikalteilfuge 6 und der Horizontalteilfuge 7 ist eine Kreuzteilfugenklammer 10 vorgesehen.In the crossing region of the vertical parting line 6 and the horizontal parting line 7, a cross-part joint clip 10 is provided.

Das erste Gehäuseteil 2 weist an der Vertikalteilfuge 6 eine erste Teilfugenwulst 11 und im Bereich der Horizontalteilfuge 7 eine dritte Teilfugenwulst 13 auf. In analoger Weise ist an dem zweiten Gehäuseteil 3 an der Vertikalteilfuge 6 eine zweite Teilfugenwulst 12 und an der Horizontalteilfuge 7 eine fünfte Teilfugenwulst 15 ausgebildet. Genauso sind das dritte Gehäuseteil 4 und das vierte Gehäuseteil 5 mit Teilfugenwülsten versehen, wobei das dritte Gehäuseteil 4 an der Horizontalteilfuge 7 eine vierte Teilfugenwulst 14 und an der Horizontalteilfuge 6 eine siebte Teilfugenwulst 17 aufweist und das vierte Gehäuseteil 5 an der Vertikalteilfuge 6 eine achte Teilfugenwulst 18 und an der Horizontalteilfuge 7 eine sechste Teilfugenwulst 16 aufweist. Jeder Teilfugenwulst 11 bis 18 umfasst dabei einen von der Außenfläche des entsprechenden Gehäuseteils hervorstehenden Bereich und einen von der Innenfläche hervorstehenden Bereich.The first housing part 2 has at the vertical parting line 6 a first parting line 11 and in the region of the horizontal parting line 7 a third parting line 13. In an analogous manner, a second Teilfugenwulst 12 and at the horizontal parting line 7, a fifth Teilfugenwulst 15 is formed on the second housing part 3 at the vertical parting line 6. Similarly, the third housing part 4 and the fourth housing part 5 are provided with Teilfugenwülsten, the third housing part 4 at the horizontal parting line 7 a fourth Teilfugenwulst 14 and the horizontal parting line 6 a seventh Teilfugenwulst 17 and the fourth housing part 5 at the vertical parting line 6 an eighth Teilfugenwulst 18 and at the horizontal parting line 7 has a sixth Teilfugenwulst 16. Each Teilfugenwulst 11 to 18 in this case comprises a protruding from the outer surface of the corresponding housing part and a region protruding from the inner surface.

Die Teilfugenklammern 8, 9, 10 weisen jeweils ein Innenteil 19 und ein Außenteil 20 auf, wobei das Innenteil den in dem Turbomaschinengehäuse 1 innenliegenden Abschnitt der Teilfugenwülste formschlüssig umgreift und das Außenteil 20 die außerhalb des Turbomaschinengehäuses 1 liegenden Bereiche der Teilfugenwülste formschlüssig umgreift. Für jede Teilfugenklammer 8, 9, 10 weist jede Teilfuge 6, 7 ein Teilfugenloch 23 auf, das mittig an der Teilfuge 6, 7 vorgesehen ist. Mit dem Teilfugenloch 23 fluchtend ist dem Turbomaschinengehäuse 1 zugewandt in dem Innenteil 19 ein Gewindeloch 21 vorgesehen. Ferner ist mit dem Gewindeloch 21 und dem Teilfugenloch 23 fluchtend in dem Außenteil 20 ein Durchsteckloch 22 vorgesehen.The part-joint brackets 8, 9, 10 each have an inner part 19 and an outer part 20, wherein the inner part engages around the inside of the turbomachinery housing 1 portion of the Teilfugenwülste positive and the outer part 20 the outside of the turbomachinery housing 1 lying areas of the parting beads engages positively. For each part-joint bracket 8, 9, 10, each parting line 6, 7 has a part-joint hole 23, which is provided centrally on the parting line 6, 7. In alignment with the parting hole 23 is the turbo machine housing 1 facing in the inner part 19, a threaded hole 21 is provided. Further, a through-hole 22 is provided with the threaded hole 21 and the parting hole 23 in alignment in the outer part 20.

Zusätzlich ist an dem Kreuzungspunkt der Horizontalteilfuge 7 und der Vertikalteilfuge 6 ein Kreuzloch 24 in dem Turbomaschinengehäuse 1 vorgesehen, dessen Längsachse auf den Kreuzungspunkt der Horizontalteilfuge 7 und der Vertikalteilfuge 6 liegt. In analoger Weise, wie für das Teilfugenloch 23, ist für das Kreuzloch 24 in dem Innenteil 19 der Kreuzteilfugenklammer 10 ein Gewindeloch 21 und in dem Außenteil 20 der Kreuzteilfugenklammer 10 ein Durchsteckloch 22 vorgesehen, wobei das Gewindeloch 21, das Durchsteckloch 22 und das Kreuzloch 24 miteinander fluchten.In addition, at the intersection of the horizontal parting line 7 and the vertical parting line 6, a cross hole 24 is provided in the turbomachine housing 1, the longitudinal axis of which lies at the intersection of the horizontal parting line 7 and the vertical parting line 6. Similarly, as for the parting hole 23, a through hole 22 is provided for the cross hole 24 in the inner part 19 of the Kreuzteilfugenklammer 10 and in the outer part 20 of the Kreuzteilfugenklammer 10, wherein the threaded hole 21, the through hole 22 and the cross hole 24th aligned with each other.

Durch das Durchsteckloch 22, das Teilfugenloch 23 bzw. das Kreuzloch 24 und in das Gewindeloch 21 ist eine Halteschraube 25 gesteckt. Die Halteschraube 25 weist einen ersten Gewindeabschnitt 26 und einen zweiten Gewindeabschnitt 27 auf, wobei zwischen dem ersten Gewindeabschnitt 26 und dem zweiten Gewindeabschnitt 27 ein Dehnschaft 28 vorgesehen sein kann. Die Halteschraube 25 ist derart in die Löcher 21 bis 23 gesteckt, dass der erste Gewindeabschnitt 26 in dem Gewindeloch 21 eine Schraubverbindung ausbildend eingreift, der zweite Gewindeabschnitt 27 von dem Außenteil 20 nach außen von dem Turbomaschinengehäuse 1 vorsteht und der Dehnschaft 28 zwischen den Teilfugenwülsten 11 bis 18 angeordnet ist.Through the through-hole 22, the parting hole 23 and the cross hole 24 and in the threaded hole 21, a retaining screw 25 is inserted. The retaining screw 25 has a first threaded portion 26 and a second threaded portion 27, wherein between the first threaded portion 26 and the second threaded portion 27, a strain shaft 28 may be provided. The retaining screw 25 is inserted into the holes 21 to 23 such that the first threaded portion 26 engages in the threaded hole 21 forming a screw, the second threaded portion 27 protrudes from the outer part 20 to the outside of the turbomachinery housing 1 and the expansion shaft 28 between the Teilfugenwülsten eleventh is arranged to 18.

Auf den zweiten Gewindeabschnitt 27 ist eine Schraubenmutter 29 mit einer Unterlegscheibe 30 aufgeschraubt, so dass beim Anziehen der Schraubenmutter 29 das Innenteil 19 und das Außenteil 20 von der Schraubenmutter 29 an die Teilfugenwülste 11 bis 18 gedrückt wird. Selbstverständlich können je Teilfugenklammer auch zwei oder mehrere Halteschrauben 25 vorgesehen sein, die ggf. auch außermittig, d. h. auch außerhalb der Teilfuge angeordnet sein können.On the second threaded portion 27, a nut 29 is screwed with a washer 30, so that when tightening the nut 29, the inner part 19 and the outer part 20 of the nut 29 to the Teilfugenwülste 11 to 18 is pressed. Of course, two or more retaining screws 25 may be provided per part of the joint bracket, which may also be arranged eccentrically, ie, outside of the parting line.

Das Turbomaschinengehäuse 1 ist an den Teilfugenwülsten 11 bis 18 im Querschnitt T-förmig ausgebildet, wobei die Teilfugenwülste 11 bis 18 an ihren den Teilfugenlöchern 23 abgewandten Seiten Wulstflanken 31 aufweisen. Die inneren Wulstflanken sind im Wesentlichen parallel zur Längsachse des Teilfugenlochs 23 ausgebildet, wobei die Wulstflanken 31 von dem Turbomaschinengehäuse 1 weg zum Teilfugenloch 23 hin abfallend geneigt angeordnet sind.The turbomachinery housing 1 is formed on the Teilfugenwülsten 11 to 18 in cross-section T-shaped, wherein the Teilfugenwülste 11 to 18 facing away from the parting holes 23 sides bead flanks 31 have. The inner bead flanks are formed substantially parallel to the longitudinal axis of the parting line hole 23, wherein the bead flanks 31 are arranged sloping sloping away from the turbomachine housing 1 toward the parting hole 23.

Das Innenteil 19 und das Außenteil 20 sind C-förmig ausgebildet und umgreifen die Teilfugenwülste 11 bis 18 an ihren Wulstflanken 31. Mit den Wulstflanken 31 zusammenwirkend weisen das Innenteil 19 und das Außenteil 20 jeweils Klammerflanken 32 auf, die parallel zu den Wulstflanken 31 ausgebildet sind.The inner part 19 and the outer part 20 are C-shaped and surround the Teilfugenwülste 11 to 18 at their Wulstflanken 31. With the Wulstflanken 31 cooperating, the inner part 19 and the outer part 20 each have clamping edges 32, which are formed parallel to the bead flanks 31 ,

Bei der Montage des Turbomaschinengehäuses 1 mit seinen Gehäuseteilen 2 bis 5 ist wie folgt vorzugehen: Zuerst ist das Innenteil 19 an dem innenliegenden Abschnitt der Teilfugenwülste 11 bis 18 so anzulegen, dass das Innenteil 19 mit seinen Klammerflanken 32 an den Wulstflanken 31 anliegt. Dann ist die Halteschraube 25 durch das Teilfugenloch 23 bzw. das Kreuzloch 24 zu stecken und in dem Gewindeloch 21 mit dem ersten Gewindeabschnitt 26 an dem Innenteil 19 festzuschrauben. Als nächsten Schritt ist das Außenteil 20 mit dem Durchsteckloch 22 auf den zweiten Gewindeabschnitt 27 der Halteschraube 23 zu stecken, so dass das Außenteil 20 mit seinen Klammerflanken 32 an den Wulstflanken 31 der außenliegenden Abschnitte der Teilfugenwülste 11 bis 18 anliegt und ein Bereich des zweiten Gewindeabschnitts 27 von dem Außenteil 20 absteht. Auf den zweiten Gewindeabschnitt 27 ist dann die Schraubenmutter 29 zusammen mit der Unterlegscheibe 30 aufzuschrauben. Die Schraubenmutter 29 ist so weit anzuziehen, dass dadurch das Innenteil 19 und das Außenteil 20 gegen die Teilfugenwülste 11 bis 18 gedrückt wird, wobei durch das Aneinandergleiten der Wulstflanken 31 und der Klammerflanken 32 und hervorgerufen durch die geneigte Anordnung der Flanken 31, 32 bezüglich der Längsachse der Halteschraube 25 die Gehäuseteile 2 bis 5 an den Teilfugen 6, 7 zusammengedrückt werden.During assembly of the turbomachine housing 1 with its housing parts 2 to 5, the procedure is as follows: First, the inner part 19 is to be applied to the inner portion of the Teilfugenwülste 11 to 18 so that the inner part 19 rests with its clamp edges 32 on the bead flanks 31. Then, the retaining screw 25 is stuck through the parting hole 23 and the cross hole 24 and screwed in the threaded hole 21 with the first threaded portion 26 on the inner part 19. As a next step, the outer part 20 with the through-hole 22 to be stuck on the second threaded portion 27 of the retaining screw 23 so that the outer part 20 rests with its clamp edges 32 on the bead flanks 31 of the outer portions of the Teilfugenwülste 11 to 18 and a portion of the second threaded portion 27 protrudes from the outer part 20. On the second threaded portion 27 then the nut 29 is screwed together with the washer 30. The nut 29 is to be tightened so far characterized in that the inner part 19 and the outer part 20 is pressed against the Teilfugenwülste 11 to 18, wherein by the sliding side of the Wulstflanken 31 and the clamp edges 32 and caused by the inclined arrangement of the flanks 31, 32 with respect to the longitudinal axis of the retaining screw 25, the housing parts 2 to 5 are compressed at the parting lines 6, 7.

Dadurch ist es möglich, dass an dem Turbomaschinengehäuse 1 an den Teilfugen 6, 7 eine hohe Zugkraft 35 angreift, ohne dass an den Teilfugen 6, 7 eine Klaffung auftritt. Ferner ist beispielsweise an der Vertikalteilfuge 6 in Horizontalrichtung 36 die Vertikalteilfuge 6 formschlüssig gehalten.As a result, it is possible for a high tensile force 35 to act on the turbomachinery housing 1 at the parting joints 6, 7 without a gap occurring at the parting joints 6, 7. Furthermore, the vertical parting joint 6 is held in a form-fitting manner, for example, on the vertical parting line 6 in the horizontal direction 36.

Der im Bereich der Teilfugen 6, 7 des Turbomaschinengehäuses 1 sich ausgebildete Kraftfluss 34 ist symmetrisch ausgebildet, so dass im Bereich der Teilfugen 6, 7 das Turbomaschinengehäuse 1 und die Halteschrauben 25 nicht biegebeansprucht sind.The force flow 34 formed in the region of the parting lines 6, 7 of the turbomachine housing 1 is symmetrical, so that in the area of the parting lines 6, 7 the turbomachine housing 1 and the retaining screws 25 are not subjected to bending stress.

Ferner ist zwischen dem Innenteil 19 und dem innenliegenden Abschnitt der Teilfugenwülste 11 bis 18 eine Dichtung 33 vorgesehen, wodurch das Innere des Turbomaschinengehäuses 1 nach außen hin gasdicht abgeschlossen ist.Further, a seal 33 is provided between the inner part 19 and the inner portion of the Teilfugenwülste 11 to 18, whereby the interior of the turbomachine housing 1 is closed to the outside gas-tight.

Claims (12)

  1. Turbomachine casing with a parting joint (6),
    having a first casing section (2) with a first parting-joint protuberance (11) which is formed at the parting joint (6),
    a second casing section (3) with a second parting-joint protuberance (12) which is formed at the parting joint (6), and a plurality of parting-joint clamps (8), wherein the first parting-joint protuberance (11) together with the second parting-joint protuberance (12) are encompassed by the parting-joint clamps (8),
    so that the first and the second casing sections (2, 3) are held together by the parting-joint clamps (8) by means of a form-fitting connection on the parting-joint protuberances (11, 12),
    characterized in that
    each parting-joint protuberance (11, 12) extends both inside and outside the turbomachine casing (1) and each parting-joint clamp (8) has an inner part (19) and an outer part (20),
    wherein the inner part (19) acts on the inner sections of the parting-joint protuberances (11, 12) and the outer part (20) acts on the outer sections of the parting-joint protuberances (11, 12).
  2. Turbomachine casing according to Claim 1,
    wherein the parting-joint clamp (8) has a single inner part (19) and a single outer part (20), or a single inner part (19) and a multiplicity of outer parts (20), or a multiplicity of inner parts (19) and a single outer part (20).
  3. Turbomachine casing according to Claim 1 or 2,
    wherein at each position of the parting joint (6), at which one of the parting-joint clamps (8) is arranged, the turbomachine casing (1) has a parting-joint hole (23) and the parting-joint clamp (8) has a retaining means (25, 29) which extends through the parting-joint hole (23) and is fastened both to the inner part (19) and to the outer part (20),
    so that by the retaining means (25, 29) the inner part (19) and the outer part (20) are held against the parting-joint protuberances (11, 12) and interact with them in a form-fitting manner in such a way that the casing sections (2, 3) are pressed together at the parting joint (6) by the parting joint clamps (8).
  4. Turbomachine casing according to Claim 1, 2, or 3,
    wherein on the inner and on the outer sections of the parting-joint protuberances (11, 12) provision is made for a protuberance flank (31) in each case, and also the inner part (19) has clamp flanks (32) which interact with the inner protuberance flanks (31) and the outer part (20) has clamp flanks (32) which interact with the outer protuberance flanks (31),
    wherein the protuberance flanks (31) and the clamp flanks (32) are arranged in an inclined manner in such a way that during clamping of the inner part (19) and of the outer part (20) the parting-joint protuberances (11, 12) are pressed together by the parting-joint clamps (8).
  5. Turbomachine casing according to Claim 3 or 4,
    wherein the retaining means has a retaining screw (25) which is arranged in a manner in which it is inserted through the parting-joint hole (23) and with the inner part (19) forms a threaded connection in each case.
  6. Turbomachine casing according to Claim 5,
    wherein the retaining means has a threaded nut (29), wherein the retaining screw (25) is screwed into a threaded hole (21) of the inner part (19) and inserted through an insertion hole (22) of the outer part (20) and also is tightened up by means of the threaded nut (29) from outside the turbomachine casing (1).
  7. Turbomachine casing according to Claim 6,
    wherein a washer (30) is arranged between the threaded nut (29) and the outer part (20).
  8. Turbomachine casing according to one of Claims 1 to 7, wherein between the inner part (19) and the inner sections of the parting-joint protuberances (11, 12) provision is made for a seal (33) so
    that the inside of the turbomachine casing (1) is outwardly sealed off in a gastight manner.
  9. Turbomachine casing according to one of Claims 1 to 8,
    wherein the parting joint is a vertical parting joint (6) and the parting-joint clamp (8) is designed to hold together the vertical parting joint (6).
  10. Turbomachine casing according to one of Claims 1 to 8,
    wherein the parting joint is a horizontal parting joint (7) and the parting-joint clamp (9) is designed to hold together the horizontal parting joint (7).
  11. Turbomachine casing according to Claim 9 and 10,
    wherein the vertical parting joint (6) and the horizontal parting joint (7) intersect and at the point of intersection provision is made for an intersection parting-joint clamp (10) which is formed by two parting-joint clamps which are provided for the vertical parting joint (6) and are arranged in an oppositely disposed manner at the point of intersection, and from two parting-joint clamps which are provided for the horizontal parting joint (7) and are arranged in an oppositely disposed manner at the point of intersection.
  12. Turbomachine casing according to Claim 11,
    wherein at the point of intersection provision is made for an additional retaining means (25, 29) for holding together the inner part (19) and the outer part (20).
EP09715711A 2008-02-27 2009-01-14 Divided turbomachine housing having optimized parting line flanges Not-in-force EP2255075B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09715711A EP2255075B1 (en) 2008-02-27 2009-01-14 Divided turbomachine housing having optimized parting line flanges

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08003587A EP2096272A1 (en) 2008-02-27 2008-02-27 Partitioned turbo engine casing with optimised partial joint flange
PCT/EP2009/050355 WO2009106377A1 (en) 2008-02-27 2009-01-14 Divided turbomachine housing having optimized parting line flanges
EP09715711A EP2255075B1 (en) 2008-02-27 2009-01-14 Divided turbomachine housing having optimized parting line flanges

Publications (2)

Publication Number Publication Date
EP2255075A1 EP2255075A1 (en) 2010-12-01
EP2255075B1 true EP2255075B1 (en) 2011-07-20

Family

ID=39670913

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08003587A Withdrawn EP2096272A1 (en) 2008-02-27 2008-02-27 Partitioned turbo engine casing with optimised partial joint flange
EP09715711A Not-in-force EP2255075B1 (en) 2008-02-27 2009-01-14 Divided turbomachine housing having optimized parting line flanges

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08003587A Withdrawn EP2096272A1 (en) 2008-02-27 2008-02-27 Partitioned turbo engine casing with optimised partial joint flange

Country Status (6)

Country Link
US (1) US8511985B2 (en)
EP (2) EP2096272A1 (en)
JP (1) JP2011513621A (en)
CN (1) CN101960100A (en)
AT (1) ATE517233T1 (en)
WO (1) WO2009106377A1 (en)

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EP2921656B1 (en) * 2014-03-20 2019-05-08 Ansaldo Energia Switzerland AG Turbomachine and method for disassembling such a turbomachine
CN104405455B (en) * 2014-11-27 2016-09-07 浙江鸿峰重工机械有限公司 A kind of steam chamber cap of steam turbine
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EP3715590A1 (en) * 2019-03-27 2020-09-30 Siemens Aktiengesellschaft Turbomachinery housing assembly

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Also Published As

Publication number Publication date
US20110085904A1 (en) 2011-04-14
US8511985B2 (en) 2013-08-20
CN101960100A (en) 2011-01-26
JP2011513621A (en) 2011-04-28
WO2009106377A1 (en) 2009-09-03
EP2255075A1 (en) 2010-12-01
ATE517233T1 (en) 2011-08-15
EP2096272A1 (en) 2009-09-02

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