EP0058532A2 - Tuyère de turbine axiale - Google Patents
Tuyère de turbine axiale Download PDFInfo
- Publication number
- EP0058532A2 EP0058532A2 EP82300699A EP82300699A EP0058532A2 EP 0058532 A2 EP0058532 A2 EP 0058532A2 EP 82300699 A EP82300699 A EP 82300699A EP 82300699 A EP82300699 A EP 82300699A EP 0058532 A2 EP0058532 A2 EP 0058532A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- slits
- nozzle
- turbine
- filler metals
- exhaust gas
- 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.)
- Withdrawn
Links
Images
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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
Definitions
- the present invention relates to axial flow turbines, such as an exhaust gas turbine, and particularly to nozzles for such turbines.
- FIG. 1 A cross-section of part of an exhaust gas turbine in a conventional known exhaust gas turbine supercharger is shown in Figure 1.
- a nozzle of the exhaust gas turbine is shown in Figure 2 in a perspective view
- a part of an outer ring of the nozzle is shown in Figure.3 in plan view.
- the turbine is of the axial flow type and exhaust gas from a diesel engine entering a turbine inlet casing 1 passes through the nozzle 2, then drives a turbine rotor 3 by means of the turbine blades 4 and exits through a turbine outlet casing 5.
- the nozzle 2 is of the integral type normally used with an axial flow turbine, and it is constructed of nozzle blades 6, an inner nozzle ring 7 and an outer nozzle ring 8 as shown in Figure 2.
- nozzle blades 6 an inner nozzle ring 7 and an outer nozzle ring 8 as shown in Figure 2.
- stainless steel materials are used for the nozzle blades 6 because of their resistance to heat and corrosion, but the inner nozzle ring 7 and the outer nozzle ring 8 are made of cast iron with the nozzle blades 6 fixed therein.
- expansion slits 9 as shown in Figures 2 and 3 are provided at several locations in the outer nozzle ring 8.
- the slits 9 are formed in a rectilinear shape between the nozzle blades 6 by machining as shown in Figure 3, and thereby the outer nozzle ring 8 is divided into several segments. The size of these slits is, in the case of the nozzle of a large-sixed supercharger, about 3 mm wide and about 170 mm long.
- the flow of gas at high pressure on the inlet side of the nozzle blades enters through the slits in the outer nozzle ring into a sealingly enclosed chamber 10, and then escapes through the same slits towards the outlet side of the nozzle blades at a low pressure.
- the turbine inlet casing is formed as a double casing structure consisting of an inner casing 11 and an outer casing 12, and this construction is especially advantageous in that extraction of the rotor is made possible without disconnecting the coupling between the exhaust pipe of the diesel engine and the turbine inlet casing of the supercharger as shown in Figure 5.
- a gap is provided in the exhaust duct between the said inner and outer casings to allow for the removal of the inner casing 11.
- an integral type nozzle for use in an axial flow turbine in which nozzle a number of slits are formed in the outer nozzle ring so as to divide it into a number of segments in its circumferential direction, is characterised in that filler metals are located in the said slits so as,in use of the turbine, to prevent gas from escaping through said slits.
- escape of exhaust gas through the slits can be prevented without carrying out any special machining of the nozzle and moreover without being influenced by thermal expansion.
- slits 9 are formed in the outer nozzle ring 8 similarly to the prior art construction shown in Figure 2, and the width of the slits is a minimum of 2-3 mm, like the nozzles in the prior art, due to machining limitations.
- the outer circumferential edges of the nozzle blades 6 are made integral with the outer nozzle ring 8 during casting, and filler metals 15 made of heat resisting material are inserted into the several slits 9.
- the thickness of the filler metal 15 is made slightly thinner than the nominal width of the slits 9 so as to leave a small clearance between the opposed surfaces of the slits 9 and their filler metals 15 when fixed; thereby some adaptability for dimensional variations of the width of the slits is retained.
- the radial depth of the filler metal 15 is somewhat shorter than the depth of the slits 9 so as not to protrude beyond the inner diameter of the outer nozzle ring 8, as shown by the dashed line in Figure 8, while for preventing the said metals 15 from being displaced, tongues 16 are provided on each filler metal and are bent down onto the outer circumference of the outer nozzle ring 8 and secured thereto by means of bolts 17.
- the escape of exhaust gas through the slits can be prevented. Accordingly, degradation of the performance of the nozzle can be prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20146/81U | 1981-02-17 | ||
JP2014681U JPS57134302U (fr) | 1981-02-17 | 1981-02-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0058532A2 true EP0058532A2 (fr) | 1982-08-25 |
EP0058532A3 EP0058532A3 (fr) | 1983-04-27 |
Family
ID=12019006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82300699A Withdrawn EP0058532A3 (fr) | 1981-02-17 | 1982-02-12 | Tuyère de turbine axiale |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0058532A3 (fr) |
JP (1) | JPS57134302U (fr) |
DK (1) | DK48082A (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005042926A1 (fr) | 2003-10-28 | 2005-05-12 | Pratt & Whitney Canada Corp. | Controle de fuite ameliore dans un moteur a turbine |
DE102005062562A1 (de) * | 2005-12-27 | 2007-06-28 | Abb Turbo Systems Ag | Axialturbine |
CN101936193A (zh) * | 2009-06-30 | 2011-01-05 | 上海电气电站设备有限公司 | 一种大型汽轮机整体喷嘴组的制造方法 |
WO2014009203A1 (fr) * | 2012-07-09 | 2014-01-16 | Abb Turbo Systems Ag | Turbine à gaz d'échappement comprenant une couronne directrice fermée |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1286534A (fr) * | 1961-04-21 | 1962-03-02 | Austin Motor Co Ltd | Turbine à gaz du type axial |
FR1297540A (fr) * | 1961-08-12 | 1962-06-29 | Gen Electric | Stator de turbine |
GB1018168A (en) * | 1962-12-28 | 1966-01-26 | Gen Electric | Improvements in stator assembly |
CH409527A (de) * | 1962-02-14 | 1966-03-15 | Licentia Gmbh | Axialturbine mit Aussengehäuse und Innengehäuse und mit einem Ringflansch im Zwischenraum |
GB1126718A (en) * | 1966-09-09 | 1968-09-11 | Gen Motors Corp | Gas seal between turbine parts |
DE1925573A1 (de) * | 1968-05-22 | 1969-11-27 | Westinghouse Electric Corp | Gasturbine der Axialbauart |
DE1950812A1 (de) * | 1968-10-30 | 1970-06-18 | Westinghouse Electric Corp | Waermebewegliche Dichtungsanordnung fuer Axialturbinen,vorzugsweise Axial-Gasturbinen |
US3728041A (en) * | 1971-10-04 | 1973-04-17 | Gen Electric | Fluidic seal for segmented nozzle diaphragm |
US3752598A (en) * | 1971-11-17 | 1973-08-14 | United Aircraft Corp | Segmented duct seal |
GB1348446A (en) * | 1971-12-01 | 1974-03-20 | Westinghouse Electric Corp | Bladed diaphragm structure for an axial flow machine |
GB1358798A (en) * | 1972-06-09 | 1974-07-10 | Bbc Sulzer Turbomaschinen | Sealing element for a turbo-machine |
JPS5427604A (en) * | 1977-08-03 | 1979-03-01 | Toshiba Corp | Steam turbine |
DE2849747A1 (de) * | 1978-11-16 | 1980-05-29 | Volkswagenwerk Ag | Aus keramischen werkstoffen bestehender axial-leitschaufelkranz fuer gasturbinen |
GB1580884A (en) * | 1977-08-03 | 1980-12-10 | Rolls Royce | Sealing means |
-
1981
- 1981-02-17 JP JP2014681U patent/JPS57134302U/ja active Pending
-
1982
- 1982-02-04 DK DK48082A patent/DK48082A/da not_active Application Discontinuation
- 1982-02-12 EP EP82300699A patent/EP0058532A3/fr not_active Withdrawn
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1286534A (fr) * | 1961-04-21 | 1962-03-02 | Austin Motor Co Ltd | Turbine à gaz du type axial |
FR1297540A (fr) * | 1961-08-12 | 1962-06-29 | Gen Electric | Stator de turbine |
CH409527A (de) * | 1962-02-14 | 1966-03-15 | Licentia Gmbh | Axialturbine mit Aussengehäuse und Innengehäuse und mit einem Ringflansch im Zwischenraum |
GB1018168A (en) * | 1962-12-28 | 1966-01-26 | Gen Electric | Improvements in stator assembly |
GB1126718A (en) * | 1966-09-09 | 1968-09-11 | Gen Motors Corp | Gas seal between turbine parts |
DE1925573A1 (de) * | 1968-05-22 | 1969-11-27 | Westinghouse Electric Corp | Gasturbine der Axialbauart |
DE1950812A1 (de) * | 1968-10-30 | 1970-06-18 | Westinghouse Electric Corp | Waermebewegliche Dichtungsanordnung fuer Axialturbinen,vorzugsweise Axial-Gasturbinen |
US3728041A (en) * | 1971-10-04 | 1973-04-17 | Gen Electric | Fluidic seal for segmented nozzle diaphragm |
US3752598A (en) * | 1971-11-17 | 1973-08-14 | United Aircraft Corp | Segmented duct seal |
GB1348446A (en) * | 1971-12-01 | 1974-03-20 | Westinghouse Electric Corp | Bladed diaphragm structure for an axial flow machine |
GB1358798A (en) * | 1972-06-09 | 1974-07-10 | Bbc Sulzer Turbomaschinen | Sealing element for a turbo-machine |
JPS5427604A (en) * | 1977-08-03 | 1979-03-01 | Toshiba Corp | Steam turbine |
GB1580884A (en) * | 1977-08-03 | 1980-12-10 | Rolls Royce | Sealing means |
DE2849747A1 (de) * | 1978-11-16 | 1980-05-29 | Volkswagenwerk Ag | Aus keramischen werkstoffen bestehender axial-leitschaufelkranz fuer gasturbinen |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005042926A1 (fr) | 2003-10-28 | 2005-05-12 | Pratt & Whitney Canada Corp. | Controle de fuite ameliore dans un moteur a turbine |
EP1697617A1 (fr) * | 2003-10-28 | 2006-09-06 | PRATT & WHITNEY CANADA INC. | Controle de fuite ameliore dans un moteur a turbine |
US7128522B2 (en) | 2003-10-28 | 2006-10-31 | Pratt & Whitney Canada Corp. | Leakage control in a gas turbine engine |
EP1697617A4 (fr) * | 2003-10-28 | 2009-07-22 | Pratt & Whitney Canada | Controle de fuite ameliore dans un moteur a turbine |
DE102005062562A1 (de) * | 2005-12-27 | 2007-06-28 | Abb Turbo Systems Ag | Axialturbine |
CN101936193A (zh) * | 2009-06-30 | 2011-01-05 | 上海电气电站设备有限公司 | 一种大型汽轮机整体喷嘴组的制造方法 |
CN101936193B (zh) * | 2009-06-30 | 2013-07-10 | 上海电气电站设备有限公司 | 一种大型汽轮机整体喷嘴组的制造方法 |
WO2014009203A1 (fr) * | 2012-07-09 | 2014-01-16 | Abb Turbo Systems Ag | Turbine à gaz d'échappement comprenant une couronne directrice fermée |
CN104487659A (zh) * | 2012-07-09 | 2015-04-01 | Abb涡轮系统有限公司 | 带有封闭的喷嘴环的废气涡轮 |
EP2847439B1 (fr) | 2012-07-09 | 2017-03-22 | ABB Turbo Systems AG | Turbine à gaz d'échappement comprenant une couronne directrice fermée |
CN104487659B (zh) * | 2012-07-09 | 2017-03-22 | Abb涡轮系统有限公司 | 带有封闭的喷嘴环的废气涡轮 |
Also Published As
Publication number | Publication date |
---|---|
EP0058532A3 (fr) | 1983-04-27 |
DK48082A (da) | 1982-08-18 |
JPS57134302U (fr) | 1982-08-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB LI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
RHK1 | Main classification (correction) |
Ipc: F01D 9/04 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB LI |
|
17P | Request for examination filed |
Effective date: 19831012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19850402 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: AONO, YOSHITSUGUNAGASAKI SHIPYARD & ENGINE WORKS |