AT74314B

AT74314B - Procedure for regulating the number of revolutions of the prime mover of boiler feed pumps with fluctuating back pressure.

Info

Publication number: AT74314B
Authority: AT
Original assignee: Aeg
Priority date: 1911-03-02
Filing date: 1914-03-23
Publication date: 1918-04-10

Description

  

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 dass immer nur die Dampfspannung desjenigen Kessels auf die Regelungsvorrichtung der Kesselspeisepumpen einwirkt, welcher zurzeit die höchste Dampfspannung   besitzt. Gemäss   der Zeichnung 
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 Leitung k eingebaute Rückschlagventil infolge des   9 in dem Kessel Il   herrschenden Überdruckes geöffnet ist. 



   Das   Flächenverhältnis   der beiden Differentialkolben ist so gewählt, dass die zusätzliche Pumpe b erst bei Überlastung der bereits in Betrieb befindlichen Pumpe a selbsttätig   zn-   geschaltet wird. 



   Durch Verstellung eines in die Verbindungsleitung n der unter dem Pumpendruck stehenden 
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 Pumpen a und b unabhängig voneinander gemacht werden und jede für sich je zwei Kessel speisen. Zu diesem Zwecke müsste dann ein in dem   Vrteilungsrohr g zwischen   den Leitungen   k und I   
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 oder anderen Kessels entzogen werden.



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 that the boiler feed pump control device is only ever affected by the steam tension of the boiler which currently has the highest steam tension. According to the drawing
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 Line k built-in check valve is open due to the 9 prevailing overpressure in the boiler II.



   The area ratio of the two differential pistons is selected so that the additional pump b is only switched on automatically when the pump a that is already in operation is overloaded.



   By adjusting one in the connecting line n which is under the pump pressure
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 Pumps a and b can be made independent of each other and each feed two boilers. For this purpose, one would then have to be in the distribution pipe g between the lines k and I.
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 or removed from another boiler.

Claims

PATENT CLAIM: Method for regulating the number of revolutions of the drive machine of boiler feed pumps with fluctuating back pressure according to patent no.57309, characterized in that when several boilers connected in parallel are fed, the steam voltage of that boiler is used to regulate the number of revolutions of the drive machine which has the highest steam voltage.