EP3299592B1 - Carter d'échappement pour un système de turbine à vapeur basse pression - Google Patents

Carter d'échappement pour un système de turbine à vapeur basse pression Download PDF

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Publication number
EP3299592B1
EP3299592B1 EP16189912.5A EP16189912A EP3299592B1 EP 3299592 B1 EP3299592 B1 EP 3299592B1 EP 16189912 A EP16189912 A EP 16189912A EP 3299592 B1 EP3299592 B1 EP 3299592B1
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EP
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Prior art keywords
guiding rib
exhaust casing
exhaust
casing
steam turbine
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EP16189912.5A
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German (de)
English (en)
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EP3299592A1 (fr
Inventor
Michal Hoznedl
Ladislav Tajc
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Doosan Skoda Power sro
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Doosan Skoda Power sro
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Priority to EP16189912.5A priority Critical patent/EP3299592B1/fr
Priority to KR1020170121549A priority patent/KR101923482B1/ko
Publication of EP3299592A1 publication Critical patent/EP3299592A1/fr
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    • 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
    • F01D25/30—Exhaust heads, chambers, or the like
    • 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
    • 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
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing

Definitions

  • the present invention relates to an exhaust casing for a low pressure steam turbine system, and to a configuration of the guiding rib and reinforcement elements within an inner space of the exhaust casing, which allows to reduce the pressure losses and to increase the steam flow efficiency.
  • a steam passing through a steam turbine is guided through an exhaust system to a condenser to be condensed and brought back into the system.
  • a conventional exhaust system comprises an annular diffuser, comprising an inner and an outer flow guide, through which the steam passed through the turbine stage is discharged radially outward.
  • a conventional exhaust system may be oriented vertically or horizontally, typically a vertical orientation is provided.
  • a conventional diffuser has a guiding channel, divided by a horizontal plane into an upper and a lower guiding channel. The steam exiting the diffuser through the lower guiding channel moves substantially radially downwards and merely continues in this direction through the outlet towards the condenser.
  • the steam exiting the diffuser through the upper guiding channel is, however, moving in a substantially vertically upward direction and has to be turned by 180 degrees in order to flow downwards to the outlet of the exhaust system.
  • the steam is directed by collisions with guiding blocks at the apex of the diffuser within an inner space of the exhaust system.
  • the steam collides with the casing itself and any other elements positioned within said inner space of the exhaust casing.
  • the other elements may be various connecting elements, e.g. connecting elements for connecting individual blocks of a casing or fastening ribs for fastening reinforcement elements within the exhaust system. Consequently, vortices are formed within the exhaust casing in the upper part of the diffuser outlet and the steam flow undergoes large pressure losses, which undesirably affects the efficiency of the exhaust system and the overall performance of the turbine.
  • the exhaust casing may be built up of several blocks, which have to be connected together.
  • the blocks may be connected e.g. by connecting element or elements similar to the guiding ribs, but separate from the actual guiding rib.
  • Such a configuration increases the number of elements present within the inner space of exhaust casing, which in turn increases steam collisions and pressure losses.
  • the exhaust casing must be reinforced, because a vacuum has to be provided inside the exhaust casing.
  • the reinforcement is usually provided by a plurality of reinforcement elements, often in a form of tubes or plates, which need to be fastened to the casing.
  • the current practice is that each of the reinforcement elements is fastened to a separate fastening rib.
  • fastening ribs as reinforcing elements.
  • the fastening ribs are positioned perpendicularly to the guiding rib, i.e. parallel to the longitudinal axis of the steam turbine system.
  • Such a configuration extremely increases the number of elements present within the inner space of exhaust casing, which in turn increases steam collisions and pressure losses.
  • US 2012/0207595 discloses a low pressure steam turbine module having a steam diffuser fixed to an internal body by circular or semicircular flanges and and fastened to the steam exhaust bottom wall by a rigid fastening device. Together with a skirt, the flange forms a rigid hub, in which the rigid fastening device (rigid fastening rods) is directly implemented, so that it is fixed at one end thereof to the hub and at the opposite end thereof to the exhaust bottom wall.
  • the hub directly connects internal body to the rigid fastening device without passing by the diffuser.
  • the flange provides a connection between the hub and the internal body, so that the flange is fixed on the internal body.
  • the flange is not attached to the upper wall of the exhaust casing and thus cannot be considered to be a guiding rib as disclosed in the present application.
  • US 5203674 discloses a power gas turbine with diffuser, through which the exhaust gas is conveyed into the exhaust casing. After passing through the diffuser, the exhaust gas flows towards the exhaust mouth, or the gas is turned to substantially vertical upward direction.
  • the diffuser is connected to the exhaust casing by an envelope which has it contours smoothly joined to the diffuser and is contained in the exhaust casing itself, forming, in fact, the side walls of the exhaust casing.
  • the envelope is provided also in the lower part of the system, where the turn of the gas flow is necessary.
  • the envelope forms the side walls of the exhaust casing, as well as the "lower wall” of the casing and the gas flow follows the path given by the envelope. There is no guiding rib. It is also to be noted that the double curved configuration of the diffuser is very different in comparison to the diffuser of a steam turbine, so the dynamics of the flow is also different.
  • the aim of this invention is to provide a configuration of the guiding rib and the reinforcement elements within the inner space of the exhaust casing, which allows to reduce the pressure losses and to increase the steam flow efficiency.
  • the present invention provides an exhaust casing for a low pressure steam turbine system according to claim 1.
  • the steam flow efficiency is improved with this configuration, because it reduces the number of elements within the inner space of the exhaust casing.
  • collisions of the steam passing through the system with said elements are reduced as well. Consequently, turbulent velocities of the steam are balanced and pressure losses caused by the collisions are reduced.
  • the efficiency of the exhaust system and the overall performance of the turbine are improved.
  • vibrations of the system caused by the turbulent steam flow are reduced, which increases the durability of the individual elements present in the system.
  • the present invention further relates to a low pressure steam turbine system comprising the exhaust casing as described above.
  • a low pressure steam turbine system comprises a low pressure steam turbine, a diffuser, and an exhaust casing covering the exhaust system.
  • the diffuser may be a conventional diffuser, which is positioned directly behind the last row of blades of the steam turbine.
  • the diffuser forms part of the exhaust system of the steam turbine system and comprises an exhaust guiding channel, formed by an inner guide and an outer guide, the outer guide being the one which is distant from a side wall of the exhaust casing.
  • the steam turbine system may be divided into an upper part and a lower part, determined by the horizontal plane containing the longitudinal axis of the system. Further, the steam turbine system is usually symmetric about the vertical plane containing its transversal axis and may be also divided into a first half and a second half, determined by the vertical plane containing the transversal axis of the system.
  • the exhaust casing as described in the following is provided in the first half of the upper part, covering at least part of the steam turbine and creating the inner space of the exhaust casing in the first half of the upper part of the system.
  • the steam turbine system may comprise at least one exhaust casing as described in the following, preferably two exhaust casings, the two exhaust casings being mutually symmetric about the vertical plane containing the transversal axis. The two exhaust casings may then cover the whole low pressure steam turbine system.
  • the steam turbine system may be one flow direction low pressure steam turbine with radial steam exhaust with only one low pressure steam turbine exhaust system and one exhaust casing.
  • the exhaust casing of the exhaust system may have a substantially cylindrical shape.
  • the cylindrical shape is preferred for steam turbine systems with vertically oriented exhaust outlet.
  • the exhaust casing of the steam turbine system may have another shape, preferably rectangular.
  • a combination of a cylindrical and rectangular exhaust casing may be preferred for the steam turbine systems with horizontally oriented exhaust outlet.
  • the casing of the exhaust system may comprise one or more blocks.
  • the casing comprises two blocks - a first block and a second block, but it may also comprise more than two blocks. Configuration with more blocks may be preferred especially for large steam turbines.
  • the exhaust casing comprises an upper wall and a side wall, both having an inner surface and an outer surface.
  • the exhaust casing may be made of creep-resistant materials, such as metals, e.g. of steel or steel alloys.
  • a vacuum needs to be provided in the inner space of the exhaust casing (typically a pressure of about 0.5 bar or less is used, preferably a pressure of about 0.1 bar or less is used); therefore the exhaust casing needs to be reinforced.
  • the reinforcement is provided by a plurality of reinforcement elements, positioned within the inner space of the exhaust casing.
  • the reinforcement elements are positioned between the upper wall and the side wall of the exhaust casing, between the upper wall and the connection between the side wall and the inner flow guide of the diffuser or between the upper wall and the inner flow guide of the diffuser.
  • the reinforcement elements may have any suitable form, preferably a form of tubes or plates.
  • An angle between the reinforcement element and the upper wall may be between 20 and 60 degrees, preferably between 30 and 50 degrees.
  • the number of reinforcement elements should preferably be reduced as much as possible with respect to the reinforcement needs.
  • the optimal number of reinforcement elements falls within a range of 5-15, preferably 7-10. They may preferably be made of the same material as the casing of the exhaust system, e.g. of steel or steel alloys.
  • guiding rib is located in the inner space created by the exhaust casing.
  • the guiding rib is attached to the upper wall of the exhaust casing and oriented perpendicularly to the longitudinal axis of the system.
  • the guiding rib extends from the inner surface of the upper wall radially inwards into the inner space of the exhaust system.
  • the guiding rib extends from the horizontal plane of the longitudinal axis of the system and follows the cylindrical shape of the upper wall of the exhaust casing.
  • the guiding rib may have an I-shape or a T-shape.
  • the guiding rib may be formed of one single plate, or it may comprise more identical plates, preferably two - the first plate and the second plate.
  • the T-shaped guiding rib preferably contains two identical L-shaped plates.
  • the T-shaped guiding rib may also comprise an additional plate perpendicular to the plate or plates of the I-shaped guiding rib.
  • the plates may be made of the same material as the exhaust casing, e.g. steel or steel alloys and may then be connected together by bolts and/or welding.
  • the T-shaped guiding rib on the other hand has an advantage that it is easier to weld.
  • the height h of the guiding rib is given with respect to the height H between the horizontal plane of the longitudinal axis and the highest point of the upper wall.
  • the height h of the guiding rib may be in the range of 0.05 ⁇ H and 0.15 ⁇ H , preferably 0.14 ⁇ H , more preferably about 0.1 ⁇ H .
  • the reduction of pressure losses is higher within this height range in comparison to heights outside this range.
  • the same height range may be applied to both the I-shaped and the T-shaped guiding ribs.
  • the width w of the T-shaped guiding rib is preferably equal to or less than 1.4 ⁇ h , more preferably equal to or less than 1.2 ⁇ h and even more preferably equal to or less than 1.0 ⁇ h .
  • the guiding rib serves as a guide for the steam exiting the outlet of the diffuser in the substantially vertically upward direction to be turned in 180 degrees in order to flow downwards to the outlet of the exhaust system.
  • the guiding rib may be positioned in a specific position with respect to the exhaust outlet of the diffuser, or at a distance l from the side wall of the exhaust casing, respectively.
  • the position or the distance l may be determined based on the distance m between the end point of the outer guide of the guiding channel and the inner surface of the side wall of the exhaust casing.
  • the reduction of pressure losses is higher within this range in comparison to the cases when the guiding rib is positioned outside this range.
  • the same position range may be applied to both the I-shaped and the T-shaped guiding ribs.
  • the guiding rib further provides the reinforcement for the exhaust casing of the steam turbine system.
  • the guiding rib itself provides the reinforcement for the exhaust casing.
  • the guiding rib serves as a fastening element for fastening the reinforcement elements to the upper wall of the exhaust casing, such that no separate fastening ribs are needed.
  • the reinforcement elements are fastened to the guiding rib. They may be fastened directly to the guiding rib, or an abutment element may be provided in order to fasten the reinforcement element to the guiding rib.
  • the abutment element may have any suitable shape and size.
  • the height of the abutment element should preferably be equal to or less than the height h of the guiding rib, in order not to introduce further obstacles for the flowing steam.
  • the width of the abutment element should preferably be equal to or less than the height of the abutment element.
  • One single abutment element may be provided along the guiding rib, or, preferably, separate abutment elements may be provided for each of the reinforcement elements.
  • the reinforcement elements are fastened to the guiding rib or to the abutment elements by any suitable means known in the art, e.g. by bolts and/or welding, preferably by both bolts and welding, in order to ensure a solid connection.
  • the reinforcing elements may penetrate the guiding rib and may be attached to the upper wall at the side of the guiding rib that is distant from the side wall.
  • the guiding rib and the penetrating reinforcement elements are fastened to each other, e.g. by welding.
  • a separate abutment elements are needed, however, the size of those separate abutment elements may be reduced, because the welded connections of the reinforcement elements with the guiding rib provide additional fixation.
  • the guiding rib may be attached to the upper wall in one of the following ways: a single plate of the guiding rib may be attached to the inner surface of the upper wall or a single plate of the guiding rib may be used as a connecting element to connect the individual blocks of the exhaust casing.
  • the first plate may be attached to the first block of the exhaust casing and the second plate may be attached to the second block of the exhaust casing.
  • the connections between the rib and the casing blocks may be provided by any suitable means known in the art, e.g. by bolts and/or welding, preferably by both bolts and welding, in order to ensure a secure and sealed connection.
  • the guiding rib serves as a guide for a steam moving in the substantially vertically upward direction to be turned by 180 degrees in order to flow downwards to the outlet of the exhaust system.
  • the guiding rib further serves as a reinforcing element and as a fastening element for fastening the reinforcement elements to the upper wall of the exhaust casing and may also serve as a connecting element between casing blocks.
  • any of the above-mentioned configurations allows for improvement of the steam flow efficiency, because it reduces the number of elements within the inner space of the exhaust casing.
  • collisions of the steam passing through the system with said elements are reduced as well. Consequently, turbulent velocities of the steam are balanced and pressure losses caused by the collisions are reduced.
  • the efficiency of the exhaust system and the overall performance of the turbine are improved.
  • vibrations of the system caused by the turbulent steam flow are reduced, which increases the durability of the individual elements present in the system.
  • a low pressure steam turbine system of Fig. 1 comprises a low pressure steam turbine 1, a diffuser 22, and an exhaust casing 10 covering the exhaust system.
  • the diffuser 22 may be a conventional diffuser, which is positioned directly behind the last row of blades 24 of the steam turbine 1.
  • the diffuser 22 comprises an exhaust guiding channel 19, formed by an inner guide 20 and an outer guide 21. Once the steam has passed the last row of blades 24 of the steam turbine 1, it is directed through the guiding channel 19 and its outlet 23 into the inner space 18 of the exhaust system surrounded by the exhaust casing 10.
  • the exhaust casing 10 is provided in the first half of the upper part of the steam turbine system, which is the part above the horizontal plane containing the longitudinal axis 25 of the system, covering at least part of the steam turbine 1 and creating the inner space 18 of the exhaust casing 10 in the upper part of the system, into which the steam exits from the outlet 23 of the diffuser 22 and where it is to be turned 180 degrees towards the outlet 26 in the lower part of the steam turbine system below the horizontal plane of the longitudinal axis.
  • the exhaust casing 10 of the exhaust system has a substantially cylindrical shape and comprises an upper wall 11 and a side wall 12.
  • the casing 10 of the exhaust system has an inner surface 13 and an outer surface 14.
  • the exhaust casing 10 may be made of creep-resistant materials, such as metals, e.g. of steel or steel alloys.
  • the reinforcement of the exhaust casing 10 is provided by the guiding rib 17 itself and by a plurality of reinforcement elements 15, which are preferably positioned between the upper wall 11 and place of connection of the inner flow guide 20 to the side wall 12 of the exhaust casing 10.
  • the reinforcement elements 15 may have a form of tubes or plates, preferably tubes.
  • the optimal number of reinforcement elements 15 is from 5 to 15, preferably 7 to 10; in the provided example, eleven reinforcement elements are provided. They may preferably be made of the same material as the casing 10 of the exhaust system, e.g. of steel or steel alloys.
  • the guiding rib 17 is attached to the upper wall 11 of the exhaust casing 10 and oriented perpendicularly to the longitudinal axis 25 of the system. It extends from the inner surface 13 of the upper wall 11 radially inwards into the inner space 18 of the exhaust casing.
  • the guiding rib 17 extends from the horizontal plane of the longitudinal axis 25 of the system and follows the cylindrical shape of the upper wall 11 of the exhaust casing 10, which can be seen in the 3D model of Fig. 2 .
  • the T-shaped guiding rib 17 comprises two identical plates - the first plate 171 and the second plate 172.
  • the plates may be made of the same material as the exhaust casing, e.g. steel or steel alloys and may then be connected together by bolts and/or welding.
  • the height h of the guiding rib 17 is given with respect to the height H between the horizontal plane of the longitudinal axis 25 and the highest point of the upper wall 11.
  • the height h of the guiding rib 17 may be in the range of 0.05 ⁇ H and 0.15 ⁇ H , preferably 0.14 ⁇ H , more preferably 0.1 ⁇ H .
  • the height of the guiding rib 17 is 0.1 ⁇ H .
  • the same height range may be applied to both the I-shaped and the T-shaped guiding ribs 17.
  • the width w of the T-shaped guiding rib 17 is preferably equal to or less than 1.4 ⁇ h , more preferably equal to or less than 1.2 ⁇ h and even more preferably equal to or less than 1.0 ⁇ h .
  • the guiding rib 17 is positioned in a specific position with respect to the exhaust outlet 23 of the diffuser 22.
  • the above-mentioned position range is based on measurements of a loss coefficient of the steam flow (representing the pressure losses of the steam flow) for various positions of the guiding rib 17.
  • the results of the measurements may be seen in Fig. 3 , in which the dependency of the loss coefficient normalized according to its highest value on the position of the guiding rib 17 from the inner surface 13 of the side wall 12 is shown. According to these measurements, the pressure losses for the guiding rib 17 positioned between 1.2 ⁇ m and 1.9 ⁇ m are relatively low compared to losses measured outside this range.
  • the guiding rib 17 serves as a fastening element for fastening the reinforcement elements 15 to the upper wall 11 of the exhaust casing 10.
  • the reinforcement elements 15 may be fastened directly to the guiding rib 17, or, as can be seen in Fig.1 , an abutment element 16 may be provided in order to fasten the reinforcement element 15 to the guiding rib 17.
  • the abutment element 16 may have any suitable shape and size.
  • the height of the abutment element 16 is preferably equal to or less than the height h of the guiding rib 17.
  • the width of the abutment element 16 is preferably equal to or less than the height of the abutment element 16.
  • One single abutment element 16 may be provided along the guiding rib (not shown), or, preferably, separate abutment elements 16 may be provided for each of the reinforcement elements 15.
  • the reinforcement elements 15 are fastened to the guiding rib 17 or to the abutment elements 15 aby any suitable means known in the art, e.g. by bolts and/or welding, preferably by both bolts and welding, in order to ensure a solid connection.
  • the reinforcing elements 15 may penetrate the guiding rib 17 and may be attached to the upper wall 11 at the side of the guiding rib 17, which is distant from the side wall 12.
  • the casing 10 of the exhaust system may comprise one or more blocks. Preferably, it comprises two blocks - a first block 10a and a second block 10b. As can be seen in Fig. 1 , the first block 10a and the second block 10b may be connected together.
  • the first plate 171 of the guiding rib 17 may be attached to the first block 10a of the exhaust casing 10 and the second plate 172 may be attached to the second block 10b of the exhaust casing 10.
  • the connections between the rib 17 and the casing blocks 10a, 10b may be provided by any suitable means known in the art, e.g. by bolts and/or welding, preferably by both bolts and welding, in order to ensure a secure and sealed connection.
  • FIG. 2 shows a preferred embodiment of the low pressure steam turbine system with two connected exhaust casings.

Claims (8)

  1. Boîtier (10) d'échappement pour un système de turbine à vapeur à basse pression comprenant une paroi (11) supérieure, une paroi (12) latérale, la paroi (12) latérale étant configurée pour la connexion avec un guide (20) intérieur d'un diffuseur (22),
    une surface (13) intérieure du boîtier d'échappement et une surface (14) extérieure du boîtier d'échappement,
    une pluralité d'éléments (15) de renforcement, chacun desdits éléments (15) de renforcement étant configuré pour une connexion à la paroi (12) latérale, au guide (20) intérieur ou au lieu de connexion entre la paroi (12) latérale et le guide (20) intérieur, et
    une nervure (17) de guidage, la nervure (17) de guidage fixée à la paroi (11) supérieure du boîtier (10) d'échappement et s'étendant radialement vers l'intérieur, caractérisée en ce que au moins l'un des éléments (15) de renforcement est fixé à la nervure (17) de guidage, la nervure (17) de guidage étant positionnée à une distance comprise entre 1,2∗ m et 1,9∗ m de la surface (13) intérieure de la paroi (12) latérale du boîtier (10) d'échappement, où le paramètre m est défini comme la distance axiale entre un point d'extrémité d'un guide (21) extérieur d'un diffuseur (22) du système de turbine à vapeur et la surface (13) intérieure de la paroi (12) latérale.
  2. Boîtier (10) d'échappement selon l'une quelconque des revendications précédentes, où la hauteur de la nervure (17) de guidage se situe dans la plage de 0,05∗ H à 0,15∗ H, où H est la hauteur du système de turbine à vapeur entre le plan horizontal de l'axe (25) longitudinal et le point le plus haut de la paroi (11) supérieure.
  3. Boîtier (10) d'échappement selon l'une quelconque des revendications précédentes, où la nervure (17) de guidage a une forme en I et comprend au moins une plaque, ou la nervure (17) de guidage a une forme en T et contient deux plaques en forme de L identiques ou contient une plaque supplémentaire perpendiculaire à la plaque ou aux plaques de la nervure de guidage en forme de I.
  4. Boîtier (10) d'échappement selon l'une quelconque des revendications précédentes, où chacun des éléments (15) de renforcement de boîtier est fixé à la nervure (17) de guidage à travers un élément (16) de butée séparé.
  5. Boîtier (10) d'échappement selon la revendication 4, où
    la hauteur de chacun des éléments (16) de butée séparés est égale ou inférieure à la hauteur h de la nervure (17) de guidage et où la largeur de chacun des éléments (16) de butée séparés est égale ou inférieure à la hauteur de l'élément (16) de butée séparé.
  6. Boîtier (10) d'échappement selon l'une quelconque des revendications 1 à 3, où
    au moins l'un des éléments (15) de renforcement pénètre dans la nervure (17) de guidage et est fixé à la paroi (11) supérieure du côté de la nervure (17) de guidage, qui est éloignée de la paroi (12) latérale du boîtier (10) d'échappement.
  7. Boîtier (10) d'échappement selon la revendication 3, comprenant en outre au moins deux blocs (10a, 10b) de boîtier, où
    la première plaque (171) de la nervure (17) de guidage est fixée au premier bloc (10a) du boîtier (10) d'échappement et la seconde plaque (172) de la nervure (17) de guidage est fixée au deuxième bloc (10b) du boîtier (10) d'échappement.
  8. Système de turbine à vapeur comprenant au moins un boîtier (10) d'échappement selon l'une quelconque des revendications précédentes.
EP16189912.5A 2016-09-21 2016-09-21 Carter d'échappement pour un système de turbine à vapeur basse pression Active EP3299592B1 (fr)

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EP16189912.5A EP3299592B1 (fr) 2016-09-21 2016-09-21 Carter d'échappement pour un système de turbine à vapeur basse pression
KR1020170121549A KR101923482B1 (ko) 2016-09-21 2017-09-21 저압 증기 터빈 시스템용 배기 케이스

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EP3299592B1 true EP3299592B1 (fr) 2020-03-18

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JP6884660B2 (ja) * 2017-07-13 2021-06-09 三菱パワー株式会社 蒸気タービンシステム
JP7254472B2 (ja) * 2018-09-28 2023-04-10 三菱重工業株式会社 蒸気タービンの排気室、蒸気タービン及び蒸気タービンの換装方法
EP3653850B1 (fr) * 2018-11-16 2021-09-29 Doosan Skoda Power S.r.o. Diffuseur d'échappement pour une turbine à vapeur et turbine à vapeur associée

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