DE406365C - Axle thrust compensation device for steam turbines, turbine blowers and similar machines - Google Patents
Axle thrust compensation device for steam turbines, turbine blowers and similar machinesInfo
- Publication number
- DE406365C DE406365C DEJ23649D DEJ0023649D DE406365C DE 406365 C DE406365 C DE 406365C DE J23649 D DEJ23649 D DE J23649D DE J0023649 D DEJ0023649 D DE J0023649D DE 406365 C DE406365 C DE 406365C
- Authority
- DE
- Germany
- Prior art keywords
- compensation device
- steam turbines
- similar machines
- thrust compensation
- axle thrust
- 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
- F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
- F01D3/04—Machines or engines with axial-thrust balancing effected by working-fluid axial thrust being compensated by thrust-balancing dummy piston 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Es ist bekannt, an den Stopfbüchsen von umlaufenden Maschinen, z. B. an den mit Dampf gesperrten Labyrinth-Stopfbüchsen von Dampfturbinen, Vorrichtungen anzubringen, die bei Stillstand der Maschine ein Eindringen von Luft durch die Stopfbüchse dadurch verhindern, daß nach Abstellen der Maschine ein ventilartiger Abschluß hergestellt wird. Bei Maschinen, die zum Ausgleich des Achsschubes mit einer mitDruckflüssigkeit arbeitenden Ausgleichvorrichtung ausgerüstet sind, die innerhalb der Maschine, angeordnet und derart bemessen ist, daß der Druck des Ausgleichmittels während des normalen Betriebes über der Atmosphäre liegt, ist eine *5 eigentliche Stopfbüchse an dieser Stelle der Welle überflüssig, da das Ausgleichmittel ein Eindringen von Luft ausschließt. Sobald aber bei Verminderung der Drehzahl oder beim Abstellen oder aus irgendeinem anderenIt is known to use the stuffing boxes of rotating machines, e.g. B. to the with Steam-locked labyrinth stuffing boxes of steam turbines, attaching devices, which causes air to penetrate through the stuffing box when the machine is at a standstill prevent a valve-like closure from being made after the machine has been switched off will. For machines that compensate for the axial thrust with a hydraulic fluid working compensation device, which are arranged within the machine and is dimensioned such that the pressure of the balancing means during normal operation is above the atmosphere, there is an actual stuffing box at this point Shaft superfluous as the balancing means prevents air from entering. As soon as when the engine speed is reduced or when it is switched off or for any other reason
Grunde der Druck des Ausgleichmittels einen gewissen Betrag unterschreitet, muß das Eindringen von Luft durch Vorrichtung verhindert werden, die zweckmäßigerweise selbsttätig wirkt. Dies wird nach vorliegender Erfindung dadurch erreicht, daß auf der Welle ein ventilartiger Körper vorgesehen ist oder daß der Ausgleichteller mit einer Ventilfläche ausgerüstet ist, die bei Stillstand der'MaschineIf the pressure of the balancing agent falls below a certain amount, the penetration must of air can be prevented by a device which expediently acts automatically. This is done according to the present invention achieved in that a valve-like body is provided on the shaft or that the compensating plate is equipped with a valve surface which, when the machine is at a standstill
ίο durch Federkraft gegen einen entsprechenden Ventilsitz am Gehäuse gepreßt wird. Sobald der Druck des Ausgleichmittels einen bestimmten Betrag erreicht, wird mit Hilfe eines unter dem Einfluß desselben stehenden Kolbens die Kraftwirkung der Feder auf die Welle oder auf den Ventilkörper vollständig aufgehoben.ίο by spring force against a corresponding one Valve seat is pressed on the housing. As soon as the pressure of the balancing agent has reached a certain level Amount is reached with the help of one under the influence of the same Piston completely absorbs the force of the spring on the shaft or on the valve body canceled.
In der Zeichnung bedeutet α das Gehäuse der Maschine, b den Ausgleichteller mit der Drosselfläche c und der Ventilfläche d, e einen unter dem Einfluß des Ausgleichmittels stehenden Kolben mit der Feder /. Das Ausgleichmittel wird in. der Pfeilrichtung zu- und abgeleitet. Solange die Maschine steht oder solange der Druck des Ausgleichmittels einen bestimmten Wert noch nicht erreicht hat, wird Kolben e durch die Feder / gegen den Ausgleichteller b und dadurch dessen Ventilfläche d gegen den am Gehäuse angebrachten Ventilsitz gepreßt und dadurch ein luftdichter Abschluß hergestellt. Sobald nun die Maschine angelassen wird oder sobald der Druck des Ausgleichmittels einen bestimmten Wert überschreitet, wird der Kolben e gegen die Kraftrichtung der Feder / von dem Ausgleichteller b abgehoben, so daß dann während des normalen -Betriebes die Welle mit dem Ausgleichteller frei und von der Feder unbelastet spielen kann.In the drawing, α means the housing of the machine, b the compensating plate with the throttle surface c and the valve surface d, e a piston with the spring / under the influence of the compensating means. The compensating means is supplied and discharged in the direction of the arrow. As long as the machine is at a standstill or as long as the pressure of the compensating means has not yet reached a certain value, piston e is pressed by the spring / against compensating plate b and thereby its valve surface d against the valve seat attached to the housing, creating an airtight seal. As soon as the machine is started or as soon as the pressure of the compensating means exceeds a certain value, the piston e is lifted against the direction of force of the spring / from the compensating plate b , so that then during normal operation the shaft with the compensating plate is free and from the Spring can play unloaded.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ23649D DE406365C (en) | 1923-04-20 | 1923-04-20 | Axle thrust compensation device for steam turbines, turbine blowers and similar machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ23649D DE406365C (en) | 1923-04-20 | 1923-04-20 | Axle thrust compensation device for steam turbines, turbine blowers and similar machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE406365C true DE406365C (en) | 1924-11-22 |
Family
ID=7201488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ23649D Expired DE406365C (en) | 1923-04-20 | 1923-04-20 | Axle thrust compensation device for steam turbines, turbine blowers and similar machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE406365C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2192266A1 (en) * | 2008-11-26 | 2010-06-02 | Siemens Aktiengesellschaft | Rotor device for a steam turbine and steam turbine |
-
1923
- 1923-04-20 DE DEJ23649D patent/DE406365C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2192266A1 (en) * | 2008-11-26 | 2010-06-02 | Siemens Aktiengesellschaft | Rotor device for a steam turbine and steam turbine |
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