DE322348C - Device for preventing pumping of centrifugal compressors according to patent 310586 - Google Patents

Device for preventing pumping of centrifugal compressors according to patent 310586

Info

Publication number
DE322348C
DE322348C DE1919322348D DE322348DD DE322348C DE 322348 C DE322348 C DE 322348C DE 1919322348 D DE1919322348 D DE 1919322348D DE 322348D D DE322348D D DE 322348DD DE 322348 C DE322348 C DE 322348C
Authority
DE
Germany
Prior art keywords
narrow
centrifugal compressors
compressors according
pipe
compressor
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
Application number
DE1919322348D
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Application granted granted Critical
Publication of DE322348C publication Critical patent/DE322348C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02Surge control
    • F04D27/0253Surge control by throttling

Landscapes

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

Description

Vorrichtung zum Verhüten des Pumpens von Kreiseiverdichtern nach Patent 310586. Zum Verhüten des Pumpens von Kreiselverdichtern ist es bekannt, zwischen zwei Druckräumen eine enge Rohrleitung einzuschalten oder die die Druckräume verbindende weite Rohrleitung dann, wenn die Leistung des Verdichters bis zur Pumpgrenze gesunken ist, durch eine enge, verhältnismäßig lange Rohrleitung zu ersetzen.Device for preventing pumping of circular compressors according to patent 310586. To prevent centrifugal compressors from pumping, it is known between to connect a narrow pipeline between two pressure chambers or the one connecting the pressure chambers wide pipeline when the performance of the compressor has dropped to the surge limit is to be replaced by a narrow, relatively long pipe.

Bei Regelung des Verdichters durch Veränderung der Umdrehungszahl ist es gleichgültig, ob die Einschaltung der engen Rohrleitung zwischen zwei Druckstufen, in der Saugleitung oder in der Druckleitung erfolgt; bei Antrieb des Verdichters mit unveränderlicher Drehzahl, wie dies z. B. bei Verwendung von Drehstrommotoren der Fall ist, ist dies jedoch nicht bedeutungslos. Im letzteren Falle erfolgt nämlich die Regelung der Leistung des Verdichters a durch Drosselung der Saugleitung b- (vgl. die Zeichnung). Man erhält hierdurch zwei verschiedene Druckräume in der Saugleitung, zwischen denen ein um so höherer Druckunterschied herrscht, j e geringer die angesaugte Luftmenge ist. Es ist daher bei Drosselregelung zweckmäßig, gemäß der Erfindung den Raum vor und hinter der Drosselklappe c durch eine lange, enge Leitung d zu verbinden, um- bei Herabdrosselung bis zur oberen Pumpgrenze den dann vorhandenen großen Unterschied vor und hinter der Drosselklappe für die zu über-. wältigende Reibungsarbeit in der engen, langen Rohrleitung benutzen zu können.When controlling the compressor by changing the number of revolutions it does not matter whether the narrow pipeline is switched on between two pressure stages, takes place in the suction line or in the pressure line; when driving the compressor with a constant speed, as z. B. when using three-phase motors is the case, however, it is not meaningless. In the latter case takes place namely the regulation of the performance of the compressor a by throttling the suction line b- (see the drawing). This results in two different pressure chambers in the suction line, between which there is a higher pressure difference, the lower the one sucked in Air volume is. It is therefore useful in throttle control according to the invention the space in front of and behind the throttle valve c through a long, narrow line d connect to - when throttling down to the upper surge limit the then existing big difference in front of and behind the throttle for the over-. overwhelming To be able to use friction work in the narrow, long pipeline.

Würde .man die enge Rohrleitung bei dieser Regelung an einer anderen Stelle des Verdichters, z. B. in der Druckleitung anbringen, so würde im Saugrohr das gleiche Gefälle wie vorher vernichtet werden, wozu jedoch dann noch die Reibungsarbeit an der in der Druckleitung eingeschalteten engen Rohrleitung hinzukäme. Bei einer Anordnung gemäß der Erfindung fällt diese letztere Arbeit fort, da sie in diesem Falle von dem in der Saugleitung vorhandenen Gefälle kostenlos geleistet wird.If the narrow pipeline with this scheme would be on another one Location of the compressor, e.g. B. attach in the pressure line, it would be in the intake manifold the same gradient as before can be destroyed, but then add the friction work would be added to the narrow pipeline switched on in the pressure line. At a Arrangement according to the invention, this latter work is omitted as it is in this If there is a gradient in the suction line, this is provided free of charge.

Die Einrichtung hat ferner den Vorteil, daß eine besondere Umschaltung der weiten Rohrleitung auf das enge Rohr und umgekehrt bei Erreichung der Pumpgrenze nicht vorgenommen zu werden braucht, da bei großer Leistung beide Rohre als Saugrohre benutzt werden, von denen dann das zweite Rohr so lange gedrosselt wird, bis das enge Rohr allein offen bleibt. Sollte die Anwendung des engen Rohres die Pumpgrenze nicht so stark herabsetzen, wie es vielleicht gewünscht wird, so kann auch in dem engen Rohr eine besondere Drosselvorrichtung vorgesehen werden, jedoch dürfte das in den meisten Fällen nicht nötig sein.The device also has the advantage that a special switchover the wide pipe to the narrow pipe and vice versa when the surge limit is reached does not need to be carried out, since both pipes are used as suction pipes when the power is high can be used, of which the second pipe is then throttled until the narrow tube alone remains open. Should the application of the narrow pipe exceed the surge line do not diminish as much as may be desired, so can also in that a special throttle device should be provided for narrow pipe, but that should be may not be necessary in most cases.

Gleichbedeutend mit der Drosselung des %veiten Rohres und Zuschaltung eines engen Rohres ist die Anordnung eines parallel geschalteten Röhrenbündels in der Saugleitung, von dem die einzelnen Rohre bei Abnahme der Leistung eins nach dem andern verschlossen «=erden, bis schließlich nur noch ein oder mehrere Rohre mit dem gewünschten engen Querschnitt übrigbleiben, in denen infolge des starken Druckunterschiedes vor und hinter der engen Rohrleitung eine starke Geschwindigkeit der angesaugten Luftmenge herrscht.Equivalent to the throttling of the% wide pipe and connection a tight one Pipe is the arrangement of a parallel connected Tube bundle in the suction line, of which the individual tubes when the power decreases one by one closed "= ground until finally only one or more Pipes with the desired narrow cross-section remain, in which, as a result of the strong Pressure difference upstream and downstream of the narrow pipeline creates a strong velocity the amount of air sucked in.

Claims (1)

PATENT-ANSPRUcH: Vorrichtung zum Verhüten des Pumpens von Kreiselverdichtern nach Patent Vo586, dadurch gekennzeichnet, daß bei einer Leistungsregelung des Verdichters durch Veränderung- des Saugrohrquerschnittes die zur Dämpfung des geförderten Mittels benötigte enge Rohrleitung parallel zur Regelungsstelle geschaltet ist. .PATENT CLAIM: Device to prevent pumping of centrifugal compressors according to patent Vo586, characterized in that with a capacity control of the compressor by changing the suction pipe cross-section to dampen the conveyed medium required narrow pipeline is connected in parallel to the control center. .
DE1919322348D 1919-10-09 1919-10-09 Device for preventing pumping of centrifugal compressors according to patent 310586 Expired DE322348C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE322348T 1919-10-09

Publications (1)

Publication Number Publication Date
DE322348C true DE322348C (en) 1920-06-30

Family

ID=6166666

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919322348D Expired DE322348C (en) 1919-10-09 1919-10-09 Device for preventing pumping of centrifugal compressors according to patent 310586

Country Status (1)

Country Link
DE (1) DE322348C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0357246A2 (en) * 1988-08-03 1990-03-07 Nissan Motor Co., Ltd. Shaft seal arrangement of turbocharger
BE1012901A3 (en) * 1999-09-15 2001-05-08 Atlas Copco Airpower Nv Working method for the regulation of the flow of a gaseous fluid in a pipeand a pipe fitted with a flow control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0357246A2 (en) * 1988-08-03 1990-03-07 Nissan Motor Co., Ltd. Shaft seal arrangement of turbocharger
EP0357246A3 (en) * 1988-08-03 1990-03-14 Nissan Motor Shaft seal arrangement of turbocharger
US5076765A (en) * 1988-08-03 1991-12-31 Nissan Motor Company, Altd. Shaft seal arrangement of turbocharger
BE1012901A3 (en) * 1999-09-15 2001-05-08 Atlas Copco Airpower Nv Working method for the regulation of the flow of a gaseous fluid in a pipeand a pipe fitted with a flow control

Similar Documents

Publication Publication Date Title
DE6918573U (en) REFRIGERATION SYSTEM WITH MULTI-STAGE THROAT
DE2849723A1 (en) INTERNAL COMBUSTION ENGINE
DE322348C (en) Device for preventing pumping of centrifugal compressors according to patent 310586
EP0243675B1 (en) Method of pulsation damping at piston compressors
DE407168C (en) Device for overpressure feeding of explosion engines
DE2446490A1 (en) CHARGED PISTON ENGINE
DE671913C (en) Single or multi-housing, multi-stage axial compressor with at least one external intermediate cooler
CH248603A (en) Method for operating an internal combustion engine with at least two exhaust gas turbochargers that can be switched in parallel, as well as a device for performing this method.
DE650569C (en) Internal combustion engine with exhaust gas-driven supercharger and at least two separate exhaust pipes
AT75190B (en) Multi-cell machine with rotating pistons and radially displaceable piston blades.
DE929360C (en) Process and device for the supply of split cooling water and compressed air in hydraulic centrifugal machines when idling
AT32915B (en) Control device for prime movers for driving fans, centrifugal compressors and pumps.
DE3114522A1 (en) Turbocompressor unit
DE305068C (en)
DE743192C (en) Air intake line, mainly for internal combustion engines of aircraft
AT214780B (en) Centrifugal pump
DE950038C (en) Control device for gas turbines
DE446239C (en) Centrifugal compressor with several partial compressors
DE866114C (en) Internal combustion engine with two centrifugal fans for flushing or charging
DE310331C (en)
DE366528C (en) Method for saving motive steam in jet pumps
DE518520C (en) Steam power plant
DE611199C (en) Multi-cylinder two-stroke machine with a common purge air tank
DE901102C (en) Compressor system
DE908209C (en) Method and device for the performance-increasing supply of purified fresh air in internal combustion engines, in particular in diesel engines