DE1041202B - Sealing of fan shafts - Google Patents

Sealing of fan shafts

Info

Publication number
DE1041202B
DE1041202B DED26893A DED0026893A DE1041202B DE 1041202 B DE1041202 B DE 1041202B DE D26893 A DED26893 A DE D26893A DE D0026893 A DED0026893 A DE D0026893A DE 1041202 B DE1041202 B DE 1041202B
Authority
DE
Germany
Prior art keywords
blower
gas
fan
sealing
suction
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.)
Pending
Application number
DED26893A
Other languages
German (de)
Inventor
Peter Hertwig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Original Assignee
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsche Babcock and Wilcox Dampfkesselwerke AG filed Critical Deutsche Babcock and Wilcox Dampfkesselwerke AG
Priority to DED26893A priority Critical patent/DE1041202B/en
Publication of DE1041202B publication Critical patent/DE1041202B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Abdichtung von Gebläsewellen Die Erfindung betrifft die Absaugung des Leckgases aus denWellendichtungen einesGebläses mittels Strahlpumpe, die durch Fördergas des Gebläses getrieben wird.Sealing of fan shafts The invention relates to suction of the leakage gas from the shaft seals of a blower by means of a jet pump, which is Conveying gas of the fan is driven.

Bei der bekannten Einrichtung dieser Art ragt die Mündung der Absaugleitung in den Saugmund des L,aufrades der ersten Stufe des Gebläses. Das die Strahlpumpe treibende Druckgefälle ist also nur dasjenige, welches das Fördergas durch die Beschleunigung infolge der Verengung im Saugmund des Laufrades erfährt. Das Gefälle ist daher nur gering; die Saugkraft der Strahlpumpe ist daher nur klein.In the known device of this type, the mouth of the suction line protrudes into the suction mouth of the L, on the first stage of the fan. That the jet pump The driving pressure gradient is only that which the conveying gas accelerates as a result of the constriction in the suction mouth of the impeller. The gradient is therefore only small amount; the suction force of the jet pump is therefore only small.

Die Erfindung will ein größeres Gefälle für die Strahlpurnpe nutzbar machen. Die Erfindung besteht darin, daß das Treibgas der Pumpe vom Austrittsstutzen züm Einlaßstutzen des Gebläses strömt, daß also das Druckgefälle des Treibgases gleich der Förderhöhe des Gebläses ist.The invention aims to use a greater gradient for the jet pump do. The invention consists in that the propellant gas of the pump from the outlet nozzle züm inlet port of the blower flows, so that the pressure drop of the propellant gas is equal to the delivery head of the fan.

Die Erfindung ist in der Zeichnung beispielsweise und vereinfacht dargestellt. Das Gas tritt in Richtung des Pfeiles 1 in den Einlaßstutzen 2 beispielsweise mit 100 mm WS-Überdruck und von dort in den Saugstutzen 3 eines Gebläses 4 ein. Über das Grebläserad 5 wird es beispielsweise mit 400 mm WS-C-berdruck weiter in Richtung des Pfeiles 7 zur Verbrauchsstelle gefördert. Der Einlaßstutzen 2 ist mit dem Austrittsstutzen 6 durch eine Leitung 8 verbunden, in der eine Strahlpumpe 9 angeordnet ist. An deren engster Stelle ist ein Stutzen 10 angeordnet, an dem beispielsweise ein Unterdruck von 30mm WS herrscht. Mit dem Stutzen 10 sind die Absaugestutzen 11 und 12 der Dichtungen der Welle 13 des Gebläses verbunden. Etwa durch die Dichtungen austretendes Leckgas wird dabei durch den Unterdruck an den Stellen 11 und 12 aus den zweckmäßigerweise an diesen angeordneten Absaugkammern 14 und 15 abgesaugt. Der Antrieb des Gebläses erfolgt über die Kupplung 16. The invention is shown in the drawing by way of example and in a simplified manner. The gas enters the inlet port 2 in the direction of arrow 1, for example with 100 mm water pressure overpressure, and from there into the suction port 3 of a blower 4. It is conveyed further in the direction of arrow 7 to the point of consumption via the Grebläserad 5 , for example with 400 mm WS-C overpressure. The inlet connector 2 is connected to the outlet connector 6 by a line 8 in which a jet pump 9 is arranged. At its narrowest point, a nozzle 10 is arranged, at which, for example, there is a negative pressure of 30 mm water column. With the nozzle 10 , the suction nozzle 11 and 12 of the seals of the shaft 13 of the fan are connected. Any leakage gas escaping through the seals is sucked out of the suction chambers 14 and 15, which are expediently arranged at these, by the negative pressure at points 11 and 12. The fan is driven via the coupling 16.

Claims (1)

PATENT #NSPEUCH: Absaugung des Leckgases aus den Wellendichtungen eines Gebläses mittels Strahlpumpe, die durch Fördergas des Gebläses getrieben wird, dadurch gekennzeichnet, daß das Treibgas der Pumpe vom Austrittsstutzen zum Einlaßstutzen des Gebläses strömt, daß also das Druckgefälle des Treibgases gleich der Förderhöhe des Gebläses ist. In Betracht gezogene Druckschriften: Deutsche Auslegeschrift Nr. 1018 187; USA.-Patentschrift Nr. 2 283 131. PATENT #NSPEUCH: Extraction of the leakage gas from the shaft seals of a blower by means of a jet pump, which is driven by the blower's conveying gas, characterized in that the propellant gas of the pump flows from the outlet connection to the inlet connection of the blower, so that the pressure gradient of the propellant gas is equal to the delivery height of the blower is. Documents considered: German Auslegeschrift No. 1018 187; U.S. Patent No. 2,283,131 .
DED26893A 1957-11-23 1957-11-23 Sealing of fan shafts Pending DE1041202B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED26893A DE1041202B (en) 1957-11-23 1957-11-23 Sealing of fan shafts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED26893A DE1041202B (en) 1957-11-23 1957-11-23 Sealing of fan shafts

Publications (1)

Publication Number Publication Date
DE1041202B true DE1041202B (en) 1958-10-16

Family

ID=7039042

Family Applications (1)

Application Number Title Priority Date Filing Date
DED26893A Pending DE1041202B (en) 1957-11-23 1957-11-23 Sealing of fan shafts

Country Status (1)

Country Link
DE (1) DE1041202B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283131A (en) * 1940-07-17 1942-05-12 Allis Chalmers Mfg Co Centrifugal blower
DE1018187B (en) * 1953-11-07 1957-10-24 Allis Chalmers Mfg Co Compressor shaft seal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283131A (en) * 1940-07-17 1942-05-12 Allis Chalmers Mfg Co Centrifugal blower
DE1018187B (en) * 1953-11-07 1957-10-24 Allis Chalmers Mfg Co Compressor shaft seal

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