DE912769C - High temperature gas turbine - Google Patents
High temperature gas turbineInfo
- Publication number
- DE912769C DE912769C DESCH3061D DESC003061D DE912769C DE 912769 C DE912769 C DE 912769C DE SCH3061 D DESCH3061 D DE SCH3061D DE SC003061 D DESC003061 D DE SC003061D DE 912769 C DE912769 C DE 912769C
- Authority
- DE
- Germany
- Prior art keywords
- gas turbine
- high temperature
- temperature gas
- ceramic
- guide vanes
- 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.)
- Expired
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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/284—Selection of ceramic materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
Description
Gasturbine für hohe Temperatur Der Wirkungsgrad von Gasturbinen hängt wesentlich von der Höhe der zulässigen Gastemperatur ab. Dabei sind die durch hohe Fliehkraftbeanspruchungen belasteten Schaufeln des Läufers der Turbine die am meisten gefährdeten Teile. Man hat daher versucht, diese Schaufeln aus keramischem Material herzustellen, ohne daß diesen Bemühungen aber bisher ein wirklicher Erfolg beschieden war. Andererseits sind Turbinenläufer aus Stahl mit innerer Kühlung vorgeschlagen und dabei beachtliche Erfolge erzielt worden.Gas turbine for high temperature The efficiency of gas turbines depends depends significantly on the level of the permissible gas temperature. They are by high Centrifugal forces put the most stress on the blades of the turbine rotor endangered parts. Attempts have therefore been made to make these blades made of ceramic material to produce, but without these efforts so far having achieved any real success was. On the other hand, turbine rotors made of steel with internal cooling are proposed and considerable successes have been achieved in the process.
Bisher ist es bei Turbinen immer üblich gewesen, denselben Baustoff für Leit- und Laufschaufeln vorzusehen. Wenn man metallischen Baustoff nahm, mußte man notwendig in einem Bereich der Gastemperatur bleiben, in dem es keine Schwierigkeit machte, auch die mechanisch wesentlich weniger beanspruchten Leitschaufeln aus Metall herzustellen.So far it has always been common for turbines to use the same building material to be provided for guide and rotor blades. If you took metallic building material, you had to it is necessary to stay in a range of gas temperature in which there is no difficulty made, including the mechanically much less stressed guide vanes made of metal to manufacture.
Wählte man dagegen keramischen Baustoff für die Leitschaufeln, so konnte man die zugehörigen keramischen Laufschaufeln nicht mit genügend hoher Geschwindigkeit laufen lassen.If, on the other hand, ceramic building material was chosen for the guide vanes, then so the associated ceramic rotor blades could not be operated at a sufficiently high speed let run.
Neu und Gegenstand der Erfindung ist, für Leit-und Laufschaufeln derselben Turbine wesensverschiedene Werkstoffe zu verwenden, nämlich innengekühlte Laufschaufeln aus metallischem Werkstoff und Leitschaufeln aus keramischem Werkstoff. Auf diese Weise wird für jeden Bauteil der seiner Eigenart angepaßte Werkstoff benutzt. Die hohe Temperaturbeständigkeit der Keramik wird nur da angewandt, wo die Festigkeitsbeanspruchung für diesen Werkstoff noch erträglich ist, und der Stahl wird nur da gewählt, wo wegen der großen Fliehkräfte keramischer Werkstoff nicht ausreicht. Der Stahl der Laufschaufeln muß dann durch verdampfende Flüssigkeit mit Hilfe durchgeblasener Luft oder auf andere Weise gekühlt werden. Diese ,Maßnahme bleibt auf die Teile beschränkt, bei denen es auf andere Weise nicht geht. Die keramischen Leitschaufeln haben den Vorteil, daß sie nicht gekühlt zu werden brauchen und daß sie daher dem Gasturbinenprozeß mit seinem hohen Wirkungsgrad nicht unnötig Wärme entziehen.What is new and the subject of the invention is for guide vanes and rotor blades of the same Turbine to use essentially different materials, namely internally cooled blades made of metallic material and guide vanes made of ceramic material. To this For each component, the material that is adapted to its characteristics is used. the The high temperature resistance of the ceramic is only used where the strength stresses is still tolerable for this material, and the steel is only chosen where it is because the large centrifugal forces ceramic material is not sufficient. The steel of the blades must then by evaporating liquid with the help of blown air or on other way to be cooled. This measure remains limited to the parts who cannot do it any other way. The ceramic guide vanes have the advantage that they do not need to be cooled and that they therefore belong to the gas turbine process with its high level of efficiency, it does not draw heat unnecessarily.
Die keramischen Werkstoffe nach der Erfindung umfassen, wie Versuche gezeigt haben, sowohl die Erzeugnisse der eigentlichen Keramik und der sogenannten Oxydkeramik. wie Quarz, Porzellan, Steatitmassen, Silikate in geschmolzenem oder gesintertem Zustand, Metalloxyde z. B. in der Form geschmolzener oder gesinterter Tonerde, wie auch Stoffe, die nach metallkeramischen Verfahren erzeugt worden sind, wie Metallkarbide und gesinterte Metallpulver oder Metallpulver anderer Art oder Mischungen von Metallpulvern mit Nichtmetallen bzw. Oxyden oder Metallverbindungen.The ceramic materials according to the invention include, as tests have shown both the products of the actual ceramics and the so-called Oxide ceramics. such as quartz, porcelain, steatite masses, silicates in molten or sintered state, metal oxides e.g. B. in the form of molten or sintered Alumina, as well as substances that have been produced using metal-ceramic processes, such as metal carbides and sintered metal powders or other kinds of metal powders or Mixtures of metal powders with non-metals or oxides or metal compounds.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH3061D DE912769C (en) | 1944-03-22 | 1944-03-22 | High temperature gas turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH3061D DE912769C (en) | 1944-03-22 | 1944-03-22 | High temperature gas turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE912769C true DE912769C (en) | 1954-06-03 |
Family
ID=7423576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH3061D Expired DE912769C (en) | 1944-03-22 | 1944-03-22 | High temperature gas turbine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE912769C (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR348222A (en) * | 1904-11-24 | 1905-04-06 | Ladislas Arthur Edmond Sekutow | Application of carborundum to the construction of gas turbines and similar thermal machines |
DE332489C (en) * | 1919-08-03 | 1921-02-03 | Arthur Gaebler | Process for the production of nozzles, blades, wheels and drums |
DE628575C (en) * | 1932-05-20 | 1936-04-07 | Ton & Steinzeug Werke Akt Ges | Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses |
-
1944
- 1944-03-22 DE DESCH3061D patent/DE912769C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR348222A (en) * | 1904-11-24 | 1905-04-06 | Ladislas Arthur Edmond Sekutow | Application of carborundum to the construction of gas turbines and similar thermal machines |
DE332489C (en) * | 1919-08-03 | 1921-02-03 | Arthur Gaebler | Process for the production of nozzles, blades, wheels and drums |
DE628575C (en) * | 1932-05-20 | 1936-04-07 | Ton & Steinzeug Werke Akt Ges | Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses |
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