DE1528770B2

DE1528770B2 - Axial or semi-axial flow machine

Info

Publication number: DE1528770B2
Application number: DE19661528770
Authority: DE
Inventors: Kurt 6710 Frankenthal Fickelscher
Original assignee: Balcke AG
Current assignee: Balcke AG
Priority date: 1966-01-27
Filing date: 1966-01-27
Publication date: 1974-03-14
Also published as: DE1528770A1; FR1509587A; NL158593B; DE1528770C3; NL6700740A

Description

teil 3 endigt oben in einem etwas erweiterten, kegel- oder kugelförmigen Zentrierungsring 4. Der Zentrierungsring 4 trägt einen Spaltring 5, welcher unten mit einer korrespondierenden Zentrierungsfläche ausgerüstet ist. Der Spaltring 5 ist an den Außenmantel der Leitradwand 6 des Leitrades 7 angeflanscht. Oben ist die Leitradwand 6 in einem Druckstutzen 8 geführt, der mittels eines Flansches 9 auf der Decke des Sumpfes 1 ruht. Der Druckstutzen 8 führt in den Krümmer 10.part 3 ends at the top in a somewhat widened, conical or spherical centering ring 4. The centering ring 4 carries a split ring 5, which is below is equipped with a corresponding centering surface. The split ring 5 is on the outer jacket the stator wall 6 of the stator 7 flanged. At the top, the stator wall 6 is in a pressure port 8 guided, which rests on the ceiling of the sump 1 by means of a flange 9. The pressure port 8 leads into the Manifold 10.

Der Krümmer 10 bzw. Druckkrümmer ist unter Bildung einer öffnung 11 schräg zu einer Maschinenwelle 15 und zum Druckstutzen 8 geschnitten. Eine Krümmerhaube 12 gleicht der abgeschnittenen Form. Diese Krümmerhaube 12 ist über schräge Flansche 13 mit dem Rest des Krümmers 10 verbunden. Über eine Laterne 14 werden beliebige Lager für die Maschinenwelle 15 getragen.The manifold 10 or pressure manifold is inclined to a machine shaft, forming an opening 11 15 and cut to the pressure port 8. A manifold hood 12 resembles the cut one Shape. This manifold hood 12 is connected to the rest of the manifold 10 via inclined flanges 13. Any bearings for the machine shaft 15 are supported via a lantern 14.

Die Maschinenwelle 15 ist im Bereich des Krümmers von einem Standrohr 16 umschlossen, das sich nach unten etwas erweitert. Dort ist das Standrohr 16 an die Leitradwand 6 des Leitrades 7 angeflanscht. Innerhalb des Leitrades 7 ist die Maschinenwelle 15 noch einmal gelagert, und sie trägt in diesem Bereich einen Laufkopf 18 mit Schaufeln 19.The machine shaft 15 is enclosed in the area of the manifold by a standpipe 16, which slightly expanded downwards. There the standpipe 16 is flanged to the stator wall 6 of the stator 7. The machine shaft 15 is once again supported within the stator 7, and it carries in a running head 18 with blades 19 in this area.

Man erkennt ohne weiteres, daß die Strömung fast ungestört wie in einem normalen Krümmer verläuft. Die Krümmerhaube 12 stört nicht, und das Standrohr 16 kann sehr dünn und strömungsgünstig gestaltet werden. Weiterhin erkennt man, daß die Krümmerhaube 12 und die Laterne 14 nur so weit angehoben zu werden brauchen, daß der Laufkopf 18 sich oberhalb des untersten Punktes der Flanschverbindung 13 befindet. Hat man diese Höhe erreicht, so läßt sich das vom Laufkopf 18 bis zum oberen Ende der Maschinenwelle 15 laufende Gebilde ohne weiteres seitlich herausfahren (in der Zeichnung nach rechts). Die durch die Linie 11 angedeutete Öffnung muß groß genug sein, um denIt is easy to see that the flow is almost undisturbed, just like in a normal bend. The manifold hood 12 does not interfere, and the standpipe 16 can be designed to be very thin and streamlined will. It can also be seen that the manifold hood 12 and the lantern 14 only so far need to be raised that the running head 18 is above the lowest point of the flange connection 13 is located. Once this height has been reached, this can be done from the barrel head 18 to the At the upper end of the machine shaft 15, easily pull out running structures to the side (in the Drawing to the right). The indicated by the line 11 opening must be large enough to the

ίο Außenmantel des Leitrades 7 hindurchtreten zu lassen. ίο to let the outer jacket of the stator 7 pass through.

Beim Einsetzen stützt und zentriert sich der Spaltring 5 in den Zentrierring 4 des Einlaufteiles 3.When inserted, the split ring 5 is supported and centered in the centering ring 4 of the inlet part 3.

Diese Verbindung am schrägen Flansch 13 erfolgt vorteilhaft durch Schrauben und Kegelstifte.This connection on the inclined flange 13 is advantageously carried out by screws and tapered pins.

Das Standrohr 16 ist in der Krümmerhaube 12 und der Laterne 14 etwas axial verschiebbar, damit die Zentrierungs- und Dichtflächen von Zentrierungsring 4 und Spaltring 5 gut auf einanderliegen.The standpipe 16 is somewhat axially displaceable in the manifold hood 12 and the lantern 14, so the centering and sealing surfaces of the centering ring 4 and split ring 5 lie well on top of one another.

Die Druckkraft zur Zentrierung des Spaltringes 5 kann kleinere Werte haben, da infolge der Druckdifferenz vor und hinter den Leitradschaufeln 7 eine Axialkraft auftritt, die bei entsprechender Neigung der sich im Reibungsschluß zwischen 4 und 5 berührenden Flächen eine verdjehungssichere Verbindung gewährleistet. Infolge des' Fortfalles hydraulischer Kräfte, die das Standrohr 16 beanspruchen könnten, ist es wie erwähnt möglich, dieses Standrohr sehr dünn auszuführen, um so die Durchflußwiderstandsbeiwerte günstig zu wählen.The compressive force for centering the split ring 5 can have smaller values because of the pressure difference an axial force occurs in front of and behind the stator blades 7, which with a corresponding inclination the frictional contact between 4 and 5 surfaces a twist-proof connection guaranteed. As a result of the 'elimination of hydraulic Forces that could stress the standpipe 16, it is possible, as mentioned, this standpipe very To be made thin in order to choose the flow resistance coefficients favorably.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 2 material must exist. It should be emphasized that the claims: manifold hood disrupts the flow in the known arrangement.

1. Axial or semi-axial flow machine, the object of the present invention is, in particular specifically high-speed centrifugal 5 starting from the flow pump mentioned at the beginning For conveying liquids around the research machine, the running parts can be pulled out easily up to 25 m, with the liquid flow as well as the solid parts connected to the running parts Maintain a 90 ° bend in one elbow while improving the Pressure port is deflected and the outside flow. The solution is according to the invention wall of the manifold has an opening, io therein that the opening to the machine shaft and to through which the centrifugal pump is inclined with the vertical pressure connection and from a one-piece th standpipe, with falling moving parts so- Elbow hood is closed, which as angled as can be pulled out with fixed parts, along the opening cut from the elbow characterized in that the opening part is shaped and sealed with the manifold and (11) to the machine shaft (15) and to the pressure 15 is firmly but detachably connected, so that the original nozzle (8) is inclined and from a one-piece borrowed shape of the elbow (before cutting off) Manifold hood (12) is closed, which is essentially retained. The von obliquely along the opening (11) covered by the manifold of the manifold hood opening in the project (10) cut part is shaped and with tion in the pull-out direction an inner circumference that the manifold (10) tightly and firmly, but detachably ao connected in each radial, from the pull-out direction so that the original shape of the measured direction is larger than the bend to be drawn through (before cutting) the essential parts of the barrel and those with them, if applicable chen is preserved. connected fixed parts.

2. Turbomachine according to claim 1, that remains advantageous through this embodiment. the characterized in that the standpipe (16) as a manifold or Dnickfarürnmer in its original a split ring (5) in the centering ring (4) in a reduced shape is essentially obtained. The one mentioned is based. Guide vane is omitted and "accordingly, it can

3. Turbomachine according to claim 1 standpipe are made much easier; because or 2, characterized in that the stand has to bear neither the weight nor shocks and tube (16) in the manifold hood (12) and a 30 vibrations. Of special pre-lantern (14) is axially displaceable. part is also the use of an oblique

Cut, because this results in an opening that extends quite far downwards, so that the pull-out

- only up to the lower edge of this opening

35 need to be raised. As soon as they have reached this height, they can be removed from the side Invention relates to an axial or semi-axial drive.

The one-piece manifold hood is connected to the curved centrifugal pump for conveying liquids, advantageously by means of a flange, at delivery heights of up to 25 m, the liquids being. This flange also serves for the amplification flow in a bend by 90 ° in a kung of the cutting line. The manifold hood can now be redirected pressure connection and the outer wall has a lantern with a thrust bearing of the manifold an opening through which to carry the machine axis,
the centrifugal pump with the vertical standpipe, with It is known per se to attach an upper part of the manifold

Flange all moving parts and fixed parts 45 (German Auslegeschrift 1055 963). Can be pulled at. Specifically high-speed centrifugal pumps of the well-known pumping station pumps (very small body pumps are called centrifugal pumps for large delivery heights, large delivery flows) with a flow rate and smaller delivery heads. deflection by 45 °, this upper part consists of two A known turbomachine of the initially part, which are divided in the longitudinal plane and held together by the aforementioned type with a deflection of the Strö- 50 flanges,
mung by 90 ° already has the advantage that the known manifold in a horizontal centrifugal pump can be pulled out of the manifold in the zontal plane at an angle to the direction of extraction without detaching it from the pressure line (Buch th. The manifold parts are consequently only Time-consuming by A. de Koväts and Desmur "Pompes, venti- to solve, and the nozzle is in the area of the upper lateurs, compresseurs", 1962, p. 274). At the well-known 55 flanges, which disrupts the flow,
th flow machine must, however, the standpipe. In addition to the flow loads, the flow machine according to the invention is suitable for bearing the entire weight, in particular for nominal widths from 700 mm and the pump arrangement. Furthermore, there remains for delivery heights up to 25 m. It leads to a small gap between the guide vane and the elbow, which gives rise to structural heights with great structural rigidity, too much to disturbances in the flow. Behind 60 ring wear of the rotating parts with a small guide vane, a higher pressure arises, which puts a strain on the cost of materials, resulting in a favorable through-guide vane. The standpipe must consequently have a flow resistance coefficient and great smoothness. In this case, it is made strong and its storage is relatively far away from the additional expense that would otherwise be set for ausoben, whereby a large overall height has applied pullable constructions.
arises. In addition, the guide vane is on both sides of the 65 The drawing shows an advantageous embodiment attack of the possibly corrosive liquid example for the subject of the invention.
(Sea water in desalination plants), so in the pump sump 1 is attached by means of screw bolts 2 that the entire guide vane made of valuable work-bell-shaped inlet part 3. The inlet