Vertical turbine pump and method for producing an elbow housing and/or a lantern housing of a vertical turbine pump

Abstract

The invention relates to a vertical turbine pump having a riser pipe extending along an axis, a motor shaft arranged in the riser pipe, an elbow housing with an elbow arranged therein and connected on a pressure side to the riser pipe, a lantern housing arranged on the elbow housing and accommodating the motor shaft, and a motor arranged on the lantern housing and driving the motor shaft, wherein the elbow housing and/or the lantern housing is formed mould-free and has a rectangular cross section.

Claims

1. A vertical turbine pump, comprising: a riser pipe extending along an axis, a motor shaft arranged in the riser pipe, an elbow housing with an elbow arranged therein and connected on a pressure side to the riser pipe, a lantern housing arranged on the elbow housing and accommodating the motor shaft, and a motor arranged on the lantern housing and driving the motor shaft, wherein the elbow housing and/or the lantern housing are formed mould-free and have a rectangular cross section.

2. The vertical turbine pump according to claim 1, wherein the elbow housing and/or the lantern housing are formed mould-free from rolled steel, formed mould-free from sheet metal and/or and is welded.

3. The vertical turbine pump according to claim 1, wherein the elbow housing and/or the lantern housing have, at its corners, axially extending angle profiles.

4. The vertical turbine pump according to claim 1, wherein the axially extending angle profiles comprise L-profiles or profiles of triangular cross section.

5. The vertical turbine pump according to claim 1, wherein the elbow housing and/or the lantern housing have at least two opposing, axially extending flat side walls.

6. The vertical turbine pump according to claim 5, wherein an axially and radially extending flat stiffening element extends away from the side wall.

7. The vertical turbine pump according to claim 5, wherein an opening is provided in the side wall.

8. The vertical turbine pump according to claim 1, wherein the elbow housing and the lantern housing and/or the lantern housing and the motor are screwed together, screwed together at regular intervals and/or screwed together at the corners.

9. The vertical turbine pump according to claim 1, wherein the elbow housing and/or the lantern housing has a radially extending fastening plate at at least one axial end.

10. The vertical turbine pump according to claim 9, wherein the radially extending fastening plate has a rectangular cross section.

11. The vertical turbine pump according to claim 1, wherein at least one of the elbow housing and the lantern housing has a radially extending fastening plate at both axial ends.

12. The vertical turbine pump according to claim 1, wherein the elbow housing, the lantern housing and/or the motor is arranged in axial extension of the riser pipe.

13. The vertical turbine pump according to claim 1, wherein the lantern housing is arranged in axial extension of the riser pipe between the elbow housing and the motor.

14. The vertical turbine pump according to claim 1, wherein the elbow housing and/or the lantern housing is box-shaped.

15. The vertical turbine pump according to claim 1, comprising an impeller arranged at an opposite, lower riser end and driven by the motor shaft for conveying a fluid into the riser pipe.

16. A method for producing an elbow housing for an elbow arrangeable therein and connectable on a pressure side to a riser pipe and/or a lantern housing for accommodating a motor shaft, driveable by a motor, of a vertical turbine pump with the riser pipe extending along an axis and the motor shaft arranged in the riser pipe, said method having the step of: forming the elbow housing and/or the lantern housing mould-free with a rectangular cross section.

17. The method according to claim 16, wherein mould-free forming comprises producing from rolled steel, from sheet metal and/or by means of welding.

18. The method according to claim 16, wherein mould-free forming comprises welding of axially extending angle profiles provided at corners of at least one of the elbow housing and/or the lantern housing to a radially extending fastening plate provided at at least one axial end of the elbow housing and/or the lantern housing.

19. The method according to claim 16, wherein mould-free forming comprises providing at least two opposing, axially extending flat side walls.

20. The method according to claim 16, wherein mould-free forming comprises forming of the elbow housing and/or the lantern housing in a box shape.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In the following, the invention is explained in greater detail with reference to the appended drawings with reference to preferred exemplary embodiments.

[0045] In the drawings

[0046] FIG. 1 shows a schematic sectional view of a vertical turbine pump with an elbow housing and a lantern housing according to a preferred exemplary embodiment of the invention,

[0047] FIG. 2 shows a schematic perspective view of the elbow housing and the lantern housing of the vertical turbine pump according to FIG. 1 in accordance with the preferred exemplary embodiment of the invention,

[0048] FIG. 3 shows a schematic transparent plan view of the lantern housing of the vertical turbine pump according to FIG. 1 according to a further preferred exemplary embodiment of the invention,

[0049] FIG. 4 shows a schematic perspective view of the lantern housing of the vertical turbine pump according to FIG. 1 according to a yet further preferred exemplary embodiment of the invention,

[0050] FIG. 5 shows a schematic perspective view of the lantern housing of the vertical turbine pump according to FIG. 1 according to a yet further preferred exemplary embodiment of the invention, and

[0051] FIG. 6 shows a schematic perspective view of the lantern housing of the vertical turbine pump according to FIG. 1 according to a yet further preferred exemplary embodiment of the invention.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

[0052] FIG. 1 shows a schematic sectional view of a vertical turbine pump 1 with an abstractly drawn elbow housing 2 having an elbow 3 and an abstractly drawn lantern housing 11 according to a preferred exemplary embodiment of the invention.

[0053] The vertical turbine pump 1 has a riser pipe 5 extending along an axis 4 with a circular outer cross section, which has a plurality of interconnected segments. A motor shaft 6 extends in the centre of the metal riser pipe 5 along the axis 4 and along the entire length of the riser pipe 5 in such a way that a free space is formed radially around the motor shaft 6 between the latter and the riser pipe 5, through which free space the fluid conveyed by the vertical turbine pump 1 rises axially upwards. For this purpose, several impellers 8 arranged axially one above the other are provided at a lower riser pipe end 7 and are driven by the motor shaft 6, draw in the fluid, and convey it into the free space.

[0054] The upper end 9 of the riser pipe 5 is attached to a base plate 10, so that the riser pipe 5 extends vertically downwards away from the base plate 10. Above the base plate 10, the elbow housing 2 adjoins vertically or upwards in the direction of the axis 4, initially in contact with the base plate, and in turn is adjoined by the lantern housing 11 in axial contact, and lastly by a motor 12 driving the motor shaft 6 and provided in a motor housing. A coupling 13 is arranged in the lantern housing 11 and is connected between the motor 12 and the motor shaft 6. Accordingly, the motor shaft 6 ends in the lantern housing 11. The elbow housing 2 and the lantern housing 11 are configured in two parts and are screwed together, as described below. The riser pipe upper end 9 is connected fluid-tightly to a first elbow end of the elbow 3 facing the impeller 8.

[0055] Referring now to FIG. 2, which shows a schematic perspective view of the elbow housing 2 and the lantern housing 11 of the vertical turbine pump 1 according to FIG. 1 in accordance with the preferred exemplary embodiment of the invention, and to FIG. 3, which shows a schematic sectional view of a plan view of the lantern housing 11 of the vertical turbine pump 1 according to FIG. 1 in accordance with a further preferred exemplary embodiment of the invention slightly supplemented with respect to FIG. 2, both the elbow housing 2 and the lantern housing 11 are produced mould-free, i.e. from welded-together metal sheets of rolled steel and profiles, and both the elbow housing 2 and the lantern housing 11 have a rectangular cross section in plan view.

[0056] Specifically, the elbow housing 2 and the lantern housing 11 each have four corners of axially extending, spaced-apart angle profiles 14 at their corners, which are configured as outwardly open L-profiles and are each closed, i.e. triangular in cross section, as may be seen in particular from FIG. 3 (FIG. 1 does not show the L-profiles). Axially extending flat side walls 15 made of sheet metal, which are welded to the angle profiles 14, are provided between two adjacent angle profiles 14.

[0057] The four side walls 15 extend, at least on the lantern housing 11, only along one part of the axial extent of the angle profiles 14, wherein an opening 16 is provided in the other part for maintenance of the lantern housing 11, which opening 16 is covered by a removable grille. The elbow housing 2 also has four side walls 15, wherein one side wall is closed insofar as the elbow 3 passes through this side wall 15 shown in the front left of the figure. In the embodiment shown in FIG. 3, the two side walls 15 shown at the top and bottom in the figure are provided with a flat, axially and radially extending rectangular stiffening element 17 made of sheet metal, which is welded along an axial edge to the corresponding side wall 15.

[0058] Returning to FIG. 2, the elbow housing 2 has a radially extending fastening plate 18 with a rectangular cross section at each of its two axial ends, which fastening plate, as may be seen from FIG. 3 for the lantern housing 11, is provided with a circular opening enclosed by the side walls 15 for the riser pipe 5 to pass through. At its lower axial end, the lantern housing 11 also has such a fastening plate 18, which is configured or arranged congruently with and in contact with the upper fastening plate 18 of the elbow housing 2. At its upper axial end, the lantern housing 11 has an octagonal fastening plate 18, which lies in contact with a circular base of the engine housing. In this respect, the respective fastening plates 18 extend orthogonally to the side walls 15 and are welded to these as well as to the angle profiles 14.

[0059] Axially below the elbow housing 2, a base element 19 is provided which is also formed mould-free and in a box shape, and which also has a fastening plate 18 at its lower axial ends. At its upper axial end, the base element 19 is formed and arranged congruently with and in contact with the lower fastening plate 18 of the elbow housing 2. Like the lantern housing 11 of FIG. 3, the base element 19 is also provided with axially and radially extending rectangular stiffening elements 17 made of sheet metal.

[0060] The base element 19 is fastened to a base with its fastening plate 18, not shown. The elbow housing 2 placed axially on the base element 19 is fastened to the base element 19 with screws guided through the lower fastening plate 18 of the elbow housing 2, wherein the screws are provided at regular intervals on the one hand and at the corners of the fastening plate 18 on the other. The lantern housing 11 placed axially on the elbow housing 2 is also fastened by screws guided through the respective fastening plates 18, wherein the screws again are provided at regular intervals on the one hand and at the corners of the fastening plate 18 on the other. Lastly, the motor housing of the motor 12, which is mounted axially on the lantern housing 11, is also connected by screws guided through the octagonal fastening plate 18 of the lantern housing 11 and the circular base of the motor housing.

[0061] FIGS. 4 to 6 each show a schematic perspective view of the lantern housing 11 of the vertical turbine pump 1 according to FIG. 1 according to a further preferred exemplary embodiment of the invention and with a respective stiffening element 17. In the exemplary embodiment of FIG. 4, two crossed sheet metal strips are welded onto the side wall 15 as stiffening elements 17. Of the two struts of the stiffening elements 17, one strut extends diagonally between the two oppositely arranged fastening plates 18 and the oppositely arranged angle profiles 14, while the other strut is welded diagonally to the first strut and in two parts at the respective ends to the centre of the continuous strut.

[0062] FIG. 5 shows a similar design, but with four struts as stiffening elements 17, which are configured as crossed U-profiles. In each case, two struts extend parallel to the two remaining struts, which also extend parallel to each other. The rectangular struts are each welded to the side wall 15 along their longitudinal edges, while the transverse edges are welded to the angle profiles 14. Lastly, FIG. 6 shows an axially extending stiffening element 17, which has a U-shaped form in axial section, the edges of which are welded to the side wall 15 and to the opposing fastening plates 18.

[0063] The described exemplary embodiments are merely examples that may be modified and/or supplemented in a variety of ways within the scope of the claims. Each feature described for a particular exemplary embodiment may be used independently or in combination with other features in any other exemplary embodiment. Each feature described for an exemplary embodiment of a certain category may also be used in a corresponding manner in an exemplary embodiment of another category.

LIST OF REFERENCE SIGNS

[0064] vertical turbine pump 1 [0065] elbow housing 2 [0066] elbow 3 [0067] axis 4 [0068] riser pipe 5 [0069] motor shaft 6 [0070] riser pipe lower end 7 [0071] impeller 8 [0072] riser pipe upper end 9 [0073] base plate 10 [0074] lantern housing 11 [0075] motor 12 [0076] coupling 13 [0077] angle profile 14 [0078] side wall 15 [0079] opening 16 [0080] stiffening element 17 [0081] fastening plate 18 [0082] floor element 19