DE346099C - - Google Patents
Info
- Publication number
- DE346099C DE346099C DENDAT346099D DE346099DA DE346099C DE 346099 C DE346099 C DE 346099C DE NDAT346099 D DENDAT346099 D DE NDAT346099D DE 346099D A DE346099D A DE 346099DA DE 346099 C DE346099 C DE 346099C
- Authority
- DE
- Germany
- Prior art keywords
- blades
- water
- speed
- wheel
- impeller
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000002093 peripheral Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/02—Arrangements on vessels of propulsion elements directly acting on water of paddle wheels, e.g. of stern wheels
- B63H5/04—Arrangements on vessels of propulsion elements directly acting on water of paddle wheels, e.g. of stern wheels with stationary water-guiding elements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Hydraulic Turbines (AREA)
Description
Schaufelradeinrichtung für Wasserkraftfahrzeuge mit feststehenden Radschaufeln. Für Wasserkraftfahrzeuge, die mit Schaufelrädern betrieben werden, hat man bisher möglichst stoßfreien Eintritt des Wassers in die Schaufelräder durch Einrichtung beweglicher Schaufeln zu erzielen versucht, die so ausgeführt werden, daß der Eintritt und Austritt der Schaufeln möglichst senkrecht erfolgt, um die Stoßverluste zu verringern und um das Mitnehmen und Hochschleudern des `'Wassers durch die austretenden Schaufeln zu vermeiden. Will man die Komplikation der besonderen Schaufelführung beseitigen, so muß man sehr große Raddurchmesser anwenden (amerikanische Flußdampfer) und den Nachteil sehr geringer Umdrehungszahlen in Kauf nehmen.Bucket wheel device for water vehicles with fixed Wheel blades. For watercraft that are operated with paddle wheels, So far, the water has entered the paddle wheels with as little impact as possible Tries to achieve the establishment of moving blades which are designed in such a way that that the inlet and outlet of the blades is as perpendicular as possible to the To reduce shock losses and to take away and throw up the '' water to avoid by the escaping blades. One wants the complication of the special Eliminate the blade guide, you have to use very large wheel diameters (American River steamer) and accept the disadvantage of very low speeds.
Nachstehend beschriebene Erfindung soll beide Nachteile beseitigen.The invention described below is intended to overcome both disadvantages.
Zu diesem Zwecke werden Schaufelräder mit verhältnismäßig geringem Durchmesser und feststehenden Schaufeln angewandt, deren zweckmäßigste Formgebung von Fall zu Fall nach den gegebenen Verhältnissen festzulegen ist. Der möglichst stoßfreie Ein- und Austritt des Wassers wird dadurch erzielt, daß ähnlich wie. bei Wasserturbinen das Wasser den Laufradzellen mit Hilfe von Leitvorrichtungen zugeführt und abgeführt wird. Hierbei ist die Beschaufelung des Laufrades und der Leitvorrichtung so auszubilden, daß die absolute Eintrittsgeschwindigkeit (in der Leitvorrichtung), die Umfangsgeschwindigkeit des Rades und die relative Eintrittsgeschwindigkeit in das Rad ein Geschwindigkeitsparallelogramm bilden. Beim Austritt des Wassers aus dem Rade muß wieder ein Geschwindigkeitsparallelogramm gebildet werden aus relativer und absoluter Austrittsgeschwindigkeit sowie aus der Umfangsgeschwindigkcit des Rades. Die Richtung der absoluten Geschwindigkeit bestimmt die Formgebung des Leitkanals, die Richtung der relativen Geschwindigkeit die Formgebung der Laufradschaufeln.For this purpose, paddle wheels are relatively small Diameter and fixed blades applied, their most appropriate shape to be determined on a case-by-case basis according to the given circumstances. The most possible bumpless entry and exit of the water is achieved in that similar to. at Water turbines feed the water to the impeller cells with the help of guide devices and is discharged. Here is the blading of the impeller and the guide device designed in such a way that the absolute entry speed (in the guiding device), the peripheral speed of the wheel and the relative entry speed in the wheel form a speed parallelogram. When the water escapes A speed parallelogram must again be formed for the wheel from relative and absolute exit speed as well as from the peripheral speed of the Wheel. The direction of the absolute speed determines the shape of the guide channel, the direction of the relative speed the shape of the impeller blades.
In den Abb. z bis 3 sind verschiedene Ausführungsmöglichkeiten dargestellt. Hierbei tritt das Wasser bei a in der Richtung des Pfeiles in die Zuführungsleitradschaufeln ein, wird von den Schaufeln b des Rades mitgenommen und beschleunigt und tritt durch die Leitkanäle c wieder aus.Various design options are shown in Figs. Here the water enters the feed guide vanes at a in the direction of the arrow a, is carried along by the blades b of the wheel and accelerates and passes through the guide channels c off again.
Hierbei müssen die Laufradschaufeln b sowie die Leitkanäle a und c entsprechend den in Abb. .q. und 5 eingezeichneten Geschwindigkeitsparallelogrammen so gekrümmt sein, daß möglichst stoßfreier Eintritt und Austritt des Wassers gewährleistet wird.Here, the impeller blades b and the guide channels a and c according to the in Fig. .q. and 5 plotted speed parallelograms be curved in such a way that the water enters and exits as smoothly as possible will.
In den beiden Geschwindigkeitsparallelogrammen in Abb. q. und 5 sind die Umfangsgeschwindigkeit, die absolute Eintrittsgeschwindigkeit, die relative Eintrittsgeschwindigkeit, die absolute Austrittsgeschwindigkeit und die relative Austrittsgeschwindigkeit eingezeichnet und in die erforderlichen Beziehungen zueinander gesetzt.In the two speed parallelograms in Fig. Q. and 5 are the peripheral speed, the absolute entry speed, the relative Entry velocity, the absolute exit velocity and the relative Exit velocity drawn in and the necessary relationships to one another set.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE346099C true DE346099C (en) |
Family
ID=574071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT346099D Active DE346099C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE346099C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076427A (en) * | 1959-12-08 | 1963-02-05 | Donald R Stapleton | Marine propulsion apparatus |
DE102005005142A1 (en) * | 2005-02-04 | 2006-08-24 | Thomas Hauck | Horizontally/vertically operating centrifugal processing machine for conveying gas/ fluid in float, has housing segment connecting cells over part of rotor surrounded by section, with fluid, for energy exchange between fluid and cells |
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0
- DE DENDAT346099D patent/DE346099C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076427A (en) * | 1959-12-08 | 1963-02-05 | Donald R Stapleton | Marine propulsion apparatus |
DE102005005142A1 (en) * | 2005-02-04 | 2006-08-24 | Thomas Hauck | Horizontally/vertically operating centrifugal processing machine for conveying gas/ fluid in float, has housing segment connecting cells over part of rotor surrounded by section, with fluid, for energy exchange between fluid and cells |
DE102005005142B4 (en) * | 2005-02-04 | 2013-07-18 | Thomas Hauck | Zentrifugalarbeitsmaschine |
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