AT93311B - Automatic control of bleed turbines in which the centrifugal governor adjusts the main steam valve and the overflow valve in the same way. - Google Patents
Automatic control of bleed turbines in which the centrifugal governor adjusts the main steam valve and the overflow valve in the same way.Info
- Publication number
- AT93311B AT93311B AT93311DA AT93311B AT 93311 B AT93311 B AT 93311B AT 93311D A AT93311D A AT 93311DA AT 93311 B AT93311 B AT 93311B
- Authority
- AT
- Austria
- Prior art keywords
- bleed
- valve
- turbines
- same way
- automatic control
- Prior art date
Links
Landscapes
- Control Of Turbines (AREA)
Description
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Selbsttätige Regelung von Anzapfturbinen, bei denen der FIiel1kraftregler das Frisch- dampf-und das Überströmventil in gleichem Sinne verstellt.
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werden im gleichen Sinne verstellt, u. zw. bei zunehmender Drehzahl geschlossen. Die Schieberbüchse m des Krafteinschalters f der Niederdrucksteuerung ist aber verschiebbar eingerichtet und mit dem Kolben n durch eine Stange verbunden. Auf die obere Seite des Kolbens n wirkt die Feder p, auf die untere der Heizdampf, der durch die Leitung o zugeführt wird.
Die Wirkungsweise der Einrichtung ist folgende : So lange der Heizdampfbedarf in normalen Grenzen schwankt, nimmt die Drehzahl der Anzapfturbine mit zunehmender Heizdampfentnahme und gleichbleibender Belastung etwas ab. Steigt der Heizdampfbedarf während einer ausgesprochenen Kälteperiode in besonderem Masse, so gelangt der Kolben n des Druckreglers in eine entsprechend tiefe Lage und bewegt das Überströmventil durch Vermittlung der Büchse m und des Kraftzylinders f so lange gegen seinen Sitz zu, bis die benötigte Anzapfmenge geliefert wird.
Zu gleicher Zeit sinkt der Geschwindigkeitsregler, da die Leistungsabgabe und damit die Drehzahl abnehmen, 11. zu. po lange, bis sich der Gesehwindigkeits-
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regler in einer solchen Lage befindet, dass das Frischdampfventil vollständig geöffnet ist und so der Turbine die grösstmögliche Dampfmenge zugeführt wird. Der Ausfall an Leistung muss nun von den parallel geschalteten Maschinen gedeckt werden. Statt eines Frischdampfventiles und eines Überströmventiles können naturgemäss auch je eine Gruppe von derartigen Ventilen vorgesehen werden.
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Automatic regulation of bleed turbines in which the flow regulator adjusts the live steam valve and the overflow valve in the same way.
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are adjusted in the same way, u. between closed with increasing speed. The sliding sleeve m of the power switch f of the low pressure control is, however, designed to be displaceable and is connected to the piston n by a rod. The spring p acts on the upper side of the piston n and the heating steam, which is supplied through the line o, acts on the lower side.
The function of the device is as follows: As long as the heating steam requirement fluctuates within normal limits, the speed of the bleed turbine decreases somewhat with increasing heating steam extraction and constant load. If the need for heating steam increases to a particularly high degree during a pronounced cold period, the piston n of the pressure regulator reaches a correspondingly low position and moves the overflow valve against its seat by means of the bushing m and the power cylinder f until the required amount of tap is delivered.
At the same time, the speed controller decreases, since the power output and thus the speed decrease, 11. to. po long until the speed
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controller is in such a position that the live steam valve is fully open and the turbine is supplied with the largest possible amount of steam. The loss of power must now be covered by the machines connected in parallel. Instead of a live steam valve and an overflow valve, a group of such valves can naturally also be provided.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE93311X | 1917-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT93311B true AT93311B (en) | 1923-06-25 |
Family
ID=5644591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT93311D AT93311B (en) | 1917-04-16 | 1917-05-10 | Automatic control of bleed turbines in which the centrifugal governor adjusts the main steam valve and the overflow valve in the same way. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT93311B (en) |
-
1917
- 1917-05-10 AT AT93311D patent/AT93311B/en active
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