DE438766C - Gap seal for axial steam or gas turbines - Google Patents
Gap seal for axial steam or gas turbinesInfo
- Publication number
- DE438766C DE438766C DEE29929D DEE0029929D DE438766C DE 438766 C DE438766 C DE 438766C DE E29929 D DEE29929 D DE E29929D DE E0029929 D DEE0029929 D DE E0029929D DE 438766 C DE438766 C DE 438766C
- Authority
- DE
- Germany
- Prior art keywords
- gap
- rivet head
- width
- reduced
- blade
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
AUSGEGEBEN Al 23. DEZEMBER 1926ISSUE Al DECEMBER 23, 1926
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
- M 438766 KLASSE 14 c GRUPPE- M 438766 CLASS 14c GROUP
(E 29929 I\i4c)(E 29929 I \ i4c)
Erste Brünner Maschinen-Fabriks-Gesellschaft in Brunn, Tschechoslowakische Republik.First Brno machine factory company in Brno, Czechoslovak Republic.
Spaltdichtung für axiale Dampf- oder Gasturbinen. Patentiert im Deutschen Reiche vom 17. Oktober 1923 ab. Gap seal for axial steam or gas turbines. Patented in the German Empire on October 17, 1923.
Bed Dampf- oder Gasturbinen müssen die die Köpfe der Laufschaufeln abdeckenden Kopfringe möglichst dünn gehalten werden, um einerseits die Stoßverluste beim Auftreffen des Dampfes auf die vorderen Endflächen der Kopfringe gering zu halten und anderaedts eine Vergrößerung der Fliehkräfte zu vermeiden, welche den Kopfring von den Schaufeln loslösen würden. Wenn man aber dem Kopfring eine so geringe Stärke (ungefähr 2 mm) erteilt, wie es für den eigentlichen I Zweck des Ringes genügen würde, so> ist es ! nicht mehr gut möglich, die Köpfe der den I Kopfring festhaltenden Niete ganz zu versen- jBed steam or gas turbines must cover the heads of the blades Head rings are kept as thin as possible, on the one hand to reduce the impact losses on impact to keep the steam on the front end surfaces of the head rings low and Others to avoid an increase in the centrifugal forces, which the head ring of the Shovels would loosen. But if you give the head ring such a small thickness (approx 2 mm), as it would suffice for the actual purpose of the ring, see above is it ! it is no longer possible to completely countersink the heads of the rivets holding the I head ring
ken, weil sonst infolge der großen Fliehkraft der Ring über die Nietköpfe weggerissen ( würde. Deshalb hat .man bei sehr dünnen Kopfringen von der vollkommenen Versenkung der Nietköpfe abgesehen, dafür aber den Nachteil in Kauf genommen, daß der zwischen dam Kopfring und dem Turbinen- j gehäuse verbleibende Spalt um die Höhe der Nietköpfe vergrößert wird.because otherwise the ring over the rivet heads would be torn away due to the great centrifugal force ( . Therefore, the complete countersinking of the rivet heads has been refrained from with very thin head rings, but the disadvantage is that the gap between the head ring and the turbine The remaining gap in the housing is increased by the height of the rivet heads.
Gemäß der vorliegenden Erfindung ist der die Schaufelköpfe umgebende Gehäuseteil erst as knapp vor den mkht versenkten. Schaufelinietköpfen auf die durch diese bedingte Breite ausgedreht, wahrend vor den Nietköpfen die Spaltbreite auf das Mindestmaß eingeschränkt ist.According to the present invention, the housing part surrounding the blade heads is only as sunk just before the mkht. Blade rivet heads turned to the width caused by this, while in front of the rivet heads the Gap width is limited to the minimum.
'Dadurch ist es möglich, den Kopfring so dünn als möglich zu halten und trotz der nicht versenkten Nietköpfe die Weite des vor den Nietköpfen liegenden Teiles des Spaltes auf das geringste zulässige Maß herabzusetzen. Es werden somit die Nachteile der eingangs erwähnten bekannten. Bauweisen vermieden..'This makes it possible to keep the head ring as thin as possible and in spite of it not countersunk rivet heads the width of the part of the gap lying in front of the rivet heads reduce the lowest permissible level. There are thus the disadvantages of the initially mentioned known. Avoided construction methods.
Die Zeichnung veranschaulicht zwei Ausführungsbeispiele der Erfindung.The drawing illustrates two exemplary embodiments of the invention.
Beim Ausführungsbeiepiel nach der Abb. 1 sind die Laufschaufel mit a, der Deckring1 mit b, der Nietkopf mit c, der stillstehendeIn the exemplary embodiment according to Fig. 1, the blade is marked with a, the shroud 1 with b, the rivet head with c, the stationary one
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT223218X | 1923-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE438766C true DE438766C (en) | 1926-12-23 |
Family
ID=3669849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE29929D Expired DE438766C (en) | 1923-10-10 | 1923-10-17 | Gap seal for axial steam or gas turbines |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE438766C (en) |
GB (1) | GB223218A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1026760B (en) * | 1955-11-10 | 1958-03-27 | Maschf Augsburg Nuernberg Ag | Centrifugal machine with runner mounted on the circumference of the blade ring and with lubrication by the propellant or conveying means |
-
1923
- 1923-10-17 DE DEE29929D patent/DE438766C/en not_active Expired
-
1924
- 1924-09-30 GB GB23100/24A patent/GB223218A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1026760B (en) * | 1955-11-10 | 1958-03-27 | Maschf Augsburg Nuernberg Ag | Centrifugal machine with runner mounted on the circumference of the blade ring and with lubrication by the propellant or conveying means |
Also Published As
Publication number | Publication date |
---|---|
GB223218A (en) | 1924-12-24 |
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