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Ausblasen

English translation: Air blowing (procedure/process)

10:47 Nov 25, 2020
German to English translations [PRO]
Tech/Engineering - Energy / Power Generation / Pump turbine
German term or phrase: Ausblasen
DE:

2.3
Ausblasen
Beim Ausblasen wird das Wasser im Laufrad durch die einströmende Luft ins Saugrohr verdrängt.
Die Luft muß auf geeignete Art dem Laufrad zu geführt werden.
Es ist möglich, dafür den gleichen Weg zu verwenden, über den die Luft beim Füllen abgelassen wird.
In diesem Fall wird die Luft von oben durch die Bohrungen in der Laufradnabe eingeblasen.
Bei dieser Methode kann Luft in die Deckelentlastungsleitung strömen.
Je nach Einmündung dieser Leitung ins Saugrohr entweicht dieser Teil der Blasluft ins Unterwasser oder kommt auf Umwegen wieder zum Laufrad zurück.
Deshalb wurde untersucht, ob es nicht besser ist, die gesamte Blasluft direkt ins Saugrohr unterhalb des Laufrads einzublasen.
Es hat sich gezeigt, daß diese zweite Methode einfacher, sicherer und schneller ist und weniger Luft erfordert.
Beim Ausblasen im Stillstand entsprach das eingeblasene Luftvolumen sehr genau dem theoretischen Volumen, d. h. dem verdrängten Wasservolumen.
Bei rotierendem Laufrad wurde jedoch festgestellt, daß zum Ausblasen mehr Luft notwendig ist.
Es konnte beobachtet werden, daß vor allem in der Anfangsphase, solange das Laufrad noch wassergefüllt ist, die Sekundärströmungen immer einen Teil der eingeblasenen Luft über den Saugkrümmer ins Unterwasser befördern.
Je länger ein Blasvorgang dauert, desto mehr Luft geht verloren.
Deshalb soll der Blasluftstrom nicht zu klein angesetzt werden.
Bei den Versuchen hat sich ein Blasluftstrom von 3 % des Pumpenwasserstroms als brauchbarer Wert ergeben (auf Ansaugzustand bezogen).
Es ist günstiger, wenn ***während des Ausblasens*** die Spaltentwässerungsleitung geöffnet ist.

EN:
In a more favourable set-up, the slit drainage pipeline is kept open while the ***blowing out of blast air is underway***. -- ?

Thanks,

Cheers,
Sebastian Witte
Germany
Local time: 23:40
English translation:Air blowing (procedure/process)
Explanation:
I found a few articles talking about the cleaning process of pipelines (I am not entirely sure if your text talks about precisely this). But the term used in these texts is "air blowing" (and they also provide additional information about the procedure).

https://www.intero-integrity.com/services/air-blowing
https://www.hydratight.com/sites/default/files/downloads/med...
https://www.fourquest.com/services/air-blowing/


I also added a link to a German website, which contains the term "Ausblasen" when it comes to the check-up of water circuit systems, which, to my understanding, works with a similar method than the above-mentioned cleaning procedure:

https://www.werkzeug-formenbau.de/spritzen-giessen/kompaktes...

I hope this helps.
Selected response from:

Magalie Modert
Luxembourg
Local time: 23:40
Grading comment
I don't know ... I was actually looking for a pump turbine plant-related translation (it would be news to me if a pipe cleaning process was involved, but could be ... was rather thinking of vapor coming from the river/reservoir water being processed by the system being removed from the system in this way) and wasn't quite sure at the time whether it is really just plain air (of whatever type) that is blown out of the system as the schematic drawings wouldn't fully reveal themselves to me. Anyway, customer has safely received and acknowledged the translation. So the question was obviously not linguistic in nature, only technical.
2 KudoZ points were awarded for this answer



Summary of answers provided
4Exhaust air flow
Cillie Swart
3Air blowing (procedure/process)
Magalie Modert


  

Answers


1 hr   confidence: Answerer confidence 3/5Answerer confidence 3/5
Air blowing (procedure/process)


Explanation:
I found a few articles talking about the cleaning process of pipelines (I am not entirely sure if your text talks about precisely this). But the term used in these texts is "air blowing" (and they also provide additional information about the procedure).

https://www.intero-integrity.com/services/air-blowing
https://www.hydratight.com/sites/default/files/downloads/med...
https://www.fourquest.com/services/air-blowing/


I also added a link to a German website, which contains the term "Ausblasen" when it comes to the check-up of water circuit systems, which, to my understanding, works with a similar method than the above-mentioned cleaning procedure:

https://www.werkzeug-formenbau.de/spritzen-giessen/kompaktes...

I hope this helps.

Magalie Modert
Luxembourg
Local time: 23:40
Meets criteria
Native speaker of: Native in LuxembourgishLuxembourgish
PRO pts in category: 2
Grading comment
I don't know ... I was actually looking for a pump turbine plant-related translation (it would be news to me if a pipe cleaning process was involved, but could be ... was rather thinking of vapor coming from the river/reservoir water being processed by the system being removed from the system in this way) and wasn't quite sure at the time whether it is really just plain air (of whatever type) that is blown out of the system as the schematic drawings wouldn't fully reveal themselves to me. Anyway, customer has safely received and acknowledged the translation. So the question was obviously not linguistic in nature, only technical.
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1 hr   confidence: Answerer confidence 4/5Answerer confidence 4/5
Exhaust air flow


Explanation:
Seems like this involves exhaust air being blown out.


    https://www.sciencedirect.com/topics/earth-and-planetary-sciences/turbine-pump
Cillie Swart
South Africa
Local time: 23:40
Meets criteria
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 2
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