EP3445953A1 - Strömungsmaschinengehäuse - Google Patents
StrömungsmaschinengehäuseInfo
- Publication number
- EP3445953A1 EP3445953A1 EP16787365.2A EP16787365A EP3445953A1 EP 3445953 A1 EP3445953 A1 EP 3445953A1 EP 16787365 A EP16787365 A EP 16787365A EP 3445953 A1 EP3445953 A1 EP 3445953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- curvature
- radius
- force
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- 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
- F01D25/265—Vertically split casings; Clamping arrangements therefor
-
- 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
- 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
- F01D25/246—Fastening of diaphragms or stator-rings
Definitions
- the invention relates to a turbomachine housing.
- a turbomachine housing such as a steam turbine housing, is typically composed of a plurality of housing parts, in particular a first, sub-part-like housing part and a second, lid-like housing part, which are connected to each other via screw connections on flanges lying opposite or adjacent to one another.
- FIG. 1 shows a partial cross section through a known from the prior art turbomachine housing 1, namely Dampfturbinenge- housing, in the region of a cover-like housing part 2.
- the lid-like housing part 2 has a curved in cross-section wall 3 with a curved inside 4 and a curved Outside 5.
- a flange 6 is formed, which connects with a flange surface 7 to a not shown, adjacent flange of an adjacent housing part.
- the lid-like housing part 2 of the turbomachine housing 1 shown in FIG. 1 is connected to the adjacent, not shown housing part via screw 8, wherein each screw 8 in the embodiment shown in Fig.
- FIG. 1 shows a force vector 12, which symbolizes the screw force of the screw connection 8.
- the force vector 12 of the screws by virtue of the screw connection extends through an axis 13 of the respective screw connection 8.
- a force vector 14 which is dependent on a pressure in the interior of the turbomachine housing 1, wherein in Fig. 1 this Pressure inside the turbomachine housing 1 dependent power is symbolized by a force vector 14.
- turbomachine housing in which the tightness of the flange connection between adjoining housing parts can be better ensured than is possible with turbomachinery housings known from the prior art.
- the present invention has the object to provide a novel flow machine housing.
- This object is achieved by a turbomachine housing according to claim 1.
- the curved inner side is contoured over a first radius of curvature R1 and in a second R2 region facing the screw connections via a second radius of curvature R2 deviating from the first radius of curvature R1 such that a force vector is provided in the area of the screw connections the force, which is dependent on a pressure inside the turbomachine housing, approximately coaxial but opposite to a force vector of the screw by virtue of the screw runs, which extends through the axis of the screw.
- an offset between the force vector of the force, which is dependent on the pressure inside the turbomachine housing, and the force vector of the screw force of the screw ⁇ 0.15, preferably ⁇ 0.05, the flange width B.
- the centers of these two curvature radii are offset from each other both in the vertical direction and in the horizontal direction. This is particularly preferred for setting favorable leverage ratios in the region of the screw connections and thus for ensuring good tightness of the turbomachine housing.
- the curved outer side is contoured over a third radius of curvature, the third radius of curvature R3 and the first radius of curvature R1 differing from one another, and wherein preferably the third radius of curvature R3 of the curved outer side is greater than the first radius of curvature R1 of the curved inner side and furthermore the centers of these two radii of curvature in the vertical direction but not in the horizontal direction can be offset from each other.
- This development of the invention also serves to set favorable leverage ratios in the region of the flange connection or screw connections and thus to ensure a good seal of the turbomachine housing.
- a contour extending through the arched wall of the second housing part intersects the same distance from the arched outside and the curved inside at least at one point of the arched wall, in particular in the upper vertex of the arched wall opposite or delimiting flange surfaces in the region of the screw in one
- Intersection which is approximately on the axis of the screw.
- a distance between this intersection and the axis of the screw ⁇ 0.15, preferably ⁇ 0.05, the flange width B.
- the second region of the curved inner side which faces the screw connections and is contoured with the second radius of curvature R2 merges on a side remote from the first region into a flat contoured region of the inner side.
- FIG. 2 shows a detail of a turbomachine housing according to the invention.
- the invention relates to a turbomachine housing, in particular a steam turbine housing.
- FIG. 2 shows a preferred embodiment of a turbomachine housing 21 according to the invention in the region of a second, cover-like housing part 22, which is connected to a first, sub-part-like housing part of the turbomachine housing 21, not shown.
- a curved wall 23 is shown, which comprises a curved inside cross-section 24 and a curved outer side 25.
- the illustrated cover-like housing part 22 of the turbomachine housing 21 has a flange 26 with a flange 27, wherein the flange portion 27 of the flange 26 of the cover-like housing part 22, not shown, part-like housing part of the turbomachine housing 21 connects with a corresponding flange, and then These housing parts are connected to each other via screw 28.
- Screwed connections 28 in turn have a screw 29, a nut 30 and an expansion sleeve 31.
- the invention provides that the curved inner side 21 in a first, remote from the screw 28 area over a first radius of curvature R1 and in a second, the screw 28 facing region via a second, from first radius of curvature R1 deviating radius of curvature R2 is contoured, in such a way that in the area of the screw 28, a force vector 32 of the screw of each screw approximately coaxial, but opposite to a force vector 34 of the force depends on the pressure inside the turbomachine housing is.
- FIG. 2 shows that the force vector 32 of the screws extends through the axis 33 of the respective screw connection 28 by virtue of the respective screw connection, and that the force vector 32 of the screw force and the force vector 34 of the force dependent on the internal pressure of the turbomachine housing are approximately coaxial with one another.
- approximately coaxial is to be understood that a possibly existing offset ⁇ between the force vectors 32, 34 is within a defined range.
- the offset ⁇ between the force vector 32 of the force of the respective screw connection 28 and the force vector 34 of the force dependent on the internal pressure is ⁇ 0.15, preferably ⁇ 0.05, the flange width B.
- the first radius of curvature R1 is the radius of curvature with which the curved inner side 24 of the curved wall 23 of the cover-like housing part 22 of the turbomachine housing 21 is arched in the region facing away from the screw connections 28.
- the region in which the curved wall 23 is contoured in the region of its inner side 24 with the first curvature radius R1 extends up to the upper vertex 35 of the curved wall 23.
- the first radius of curvature R1 of the curved inside 24 is greater than the second radius of curvature R2 of the curved inside 24, wherein centers 36, 37 of these curvature radii R1, R2 are offset from one another in both the vertical direction and in the horizontal direction.
- Fig. 2 shows that the center 37 of the second radius of curvature R2 with respect to the center 36 of the first radius of curvature R1 vertically upward toward the apex 35 of the wall 23 and horizontally outward in the direction of the flange 26 and the wall 23rd is offset.
- the curved outer side 25 of the curved wall 23 of the housing part 21 is contoured over a third radius of curvature R3, the third radius of curvature R3 and the first radius of curvature R1 differing from one another.
- the third radius of curvature R1 of the curved outer side 25 of the wall 23 is greater than the first radius of curvature R1 of the curved inner surface 24 of the wall 23, wherein the centers of these curvature radii R1 and R3 are offset from each other, preferably such that the radii of curvature R1 and R3 are offset from one another in the vertical direction, but not in the horizontal direction.
- Fig. 2 shows the optional embodiment that the center 36 of the first radius of curvature R1 of the inner side 24 is offset from the center 38 of the third radius of curvature R3 of the outer side 25 in the vertical direction upwards, ie a smaller distance from the apex 35 of the curved wall 23rd having.
- the center 36 and 38 of these radii of curvature R1 and R3 there is no offset between the centers 36 and 38 of these radii of curvature R1 and R3.
- the region of the curved inner side 24 of the housing part 22 contoured with the second radius of curvature R2 merges continuously on a first side into the first region of the curved inner side 24 contoured with the first radius of curvature R1. Furthermore, the region of the curved inner side 24 which is contoured with the second radius of curvature R2 merges continuously into a flat contoured region of the inner side 24 at a side remote from the first region, in which case the curved inner surface 24 does not bulge further, but rather runs flat.
- This flat contoured area of the inherently curved inner surface 24 of the curved wall 23 extends adjacent to the flange 27 of the flange 26 and ensures in particular that the housing part 22 of the Strömungsmaschinenge- housing 21 on the inside thereof in the region of the screw 28 a greater material thickness than then, when the curvature of the inner side 24 would extend to the flange 27.
- the strength of the turbomachine housing 21, in particular of the housing part 22, can be increased.
- contouring of the inner side 24 of the curved wall 23 via the radii R1 and R2, in particular in combination with the corresponding contouring of the curved outer side 25 over the radius R3, ensures that an offset between the force vectors 32, 34 is minimal , in particular that they extend approximately coaxially, whereby 28 such favorable leverage ratios can be adjusted in the region of the screw connections, that a good tightness of the turbomachine housing can be provided.
- the force vectors 32, 34 are opposite, but on one axis.
- Fig. 2 further shows a contour 39 of the curved wall 23 of the cover-like housing part 22, which extends between the curved inner side 24 and the curved outer side 25 through the wall 23 and at least at one point of the curved wall 23, in Fig. 2 in Vertex 35 of the same, from the curved outer side 25 and the curved inner side 24 have the same distance.
- this contour 39 is a circular section contour which, as already explained, has the same spacing in the region of the upper vertex 35 of the curved wall 23 from the inner side 24 and the outer side 25.
- An intersection point 40 of this contour 39 with the flange surface 27 in the region of the screw connections 28 preferably lies approximately on the axis 33 of the screw connections 28, through which the force vector 32 of the screw force extends.
- a distance between this intersection 40 and the axis 33 of the screw 28 is ⁇ 0.15, preferably ⁇ 0.05 of the flange width B.
- a defined contouring of the flow machine housing in particular a steam turbine housing, is proposed, preferably in the region of the curved wall 23 of the cover-like housing part 22 of the turbomachine housing 21.
- This defined contouring ensures that an offset ⁇ between the force vectors 32 and 34 of the screw forces and the force dependent on the internal pressure in the flow machine housing, which extends perpendicular to the force vectors, lies in a defined range, preferably zero.
- a good tightness of the turbomachine housing 21 can then be ensured.
- the necessary screw force for ensuring the tightness in the flange region between the contiguous flanges of the turbomachine housing can also be reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016107119.6A DE102016107119A1 (de) | 2016-04-18 | 2016-04-18 | Strömungsmaschinengehäuse |
| PCT/EP2016/075002 WO2017182106A1 (de) | 2016-04-18 | 2016-10-19 | Strömungsmaschinengehäuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3445953A1 true EP3445953A1 (de) | 2019-02-27 |
| EP3445953B1 EP3445953B1 (de) | 2020-04-01 |
Family
ID=57206220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16787365.2A Active EP3445953B1 (de) | 2016-04-18 | 2016-10-19 | Strömungsmaschinengehäuse |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3445953B1 (de) |
| JP (1) | JP6700476B2 (de) |
| CN (1) | CN109154207B (de) |
| BR (1) | BR112018069249B1 (de) |
| DE (1) | DE102016107119A1 (de) |
| WO (1) | WO2017182106A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD941360S1 (en) | 2019-01-31 | 2022-01-18 | Elliott Company | Oval steam turbine casing |
| US20200248589A1 (en) * | 2019-01-31 | 2020-08-06 | Elliott Company | Oval Steam Turbine Casing |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2278304A (en) * | 1940-07-30 | 1942-03-31 | Westinghouse Electric & Mfg Co | Joint construction |
| DE3542073A1 (de) * | 1985-11-28 | 1987-06-04 | Bbc Brown Boveri & Cie | Flanschverbindung an einem mehrteiligen, innendruckbeanspruchten gehaeuse, insbesondere von dampfturbinen |
| JPH0674003A (ja) * | 1991-07-12 | 1994-03-15 | Mitsubishi Heavy Ind Ltd | 圧力容器 |
| US6752589B2 (en) * | 2002-10-15 | 2004-06-22 | General Electric Company | Method and apparatus for retrofitting a steam turbine and a retrofitted steam turbine |
| JP2004150357A (ja) * | 2002-10-30 | 2004-05-27 | Toshiba Corp | 蒸気タービン |
| JP4559781B2 (ja) * | 2004-06-30 | 2010-10-13 | 株式会社東芝 | 蒸気タービンケーシングおよび蒸気タービン |
| DE102005015150A1 (de) * | 2005-03-31 | 2006-10-05 | Alstom Technology Ltd. | Maschinengehäuse |
| EP2096273A1 (de) * | 2008-02-28 | 2009-09-02 | Siemens Aktiengesellschaft | Rohrförmiges Gehäuse für einen Abschnitt eines Druckgehäuses einer Turbomaschine |
| US8128353B2 (en) * | 2008-09-30 | 2012-03-06 | General Electric Company | Method and apparatus for matching the thermal mass and stiffness of bolted split rings |
| US8506245B2 (en) | 2010-07-08 | 2013-08-13 | General Electric Company | Steam turbine shell |
| CH705191A1 (de) * | 2011-06-21 | 2012-12-31 | Alstom Technology Ltd | Druckgehäuse. |
| CN105134800A (zh) * | 2015-08-11 | 2015-12-09 | 哈尔滨汽轮机厂有限责任公司 | 汽轮机可顷瓦轴承的装配方法 |
-
2016
- 2016-04-18 DE DE102016107119.6A patent/DE102016107119A1/de not_active Withdrawn
- 2016-10-19 BR BR112018069249-2A patent/BR112018069249B1/pt active IP Right Grant
- 2016-10-19 JP JP2019505115A patent/JP6700476B2/ja active Active
- 2016-10-19 EP EP16787365.2A patent/EP3445953B1/de active Active
- 2016-10-19 WO PCT/EP2016/075002 patent/WO2017182106A1/de not_active Ceased
- 2016-10-19 CN CN201680084728.4A patent/CN109154207B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| BR112018069249A2 (pt) | 2019-01-22 |
| EP3445953B1 (de) | 2020-04-01 |
| JP6700476B2 (ja) | 2020-05-27 |
| DE102016107119A1 (de) | 2017-10-19 |
| CN109154207A (zh) | 2019-01-04 |
| JP2019513944A (ja) | 2019-05-30 |
| BR112018069249B1 (pt) | 2023-02-14 |
| WO2017182106A1 (de) | 2017-10-26 |
| CN109154207B (zh) | 2021-08-31 |
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