Vertical turbine pump and method for producing a bent pipe housing and / or a lamp housing of a vertical turbine pump

Abstract

The invention relates to a vertical turbine pump (1) with a riser pipe (5) extending along an axis (4), a motor shaft (6) arranged in the riser pipe (5), a manifold housing (2) with a manifold (3) arranged therein and connected to the riser pipe (5) on the pressure side, a lantern housing (11) arranged on the manifold housing (2) and receiving the motor shaft (6), and a motor (12) arranged on the lantern housing (11) and driving the motor shaft (6), wherein the manifold housing (2) and / or the lantern housing (11) is designed without a specific shape and has a rectangular cross-section.

Description

Technical area

[0001] The invention relates to a vertical turbine pump with a riser pipe extending along an axis, a motor shaft arranged in the riser pipe, a manifold housing with a manifold arranged therein and connected to the riser pipe on the pressure side, a lantern housing arranged on the manifold housing and receiving the motor shaft, and a motor arranged on the lantern housing and driving the motor shaft. The invention further relates to a method for producing a manifold housing for a manifold that can be arranged therein and connected to a riser pipe on the pressure side, and / or a lantern housing for receiving a motor-driven motor shaft of a vertical turbine pump with the riser pipe extending along an axis and the motor shaft arranged in the riser pipe. Background of the invention

[0002] Vertical turbine pumps are semi-axial pumps designed to pump liquids, particularly from open liquid reservoirs, to a higher level. Vertical turbine pumps are used in all kinds of applications, from pumping process water in industrial plants to supplying cooling towers in power plants, from pumping raw water for irrigation to increasing water pressure in municipal pumping systems, and for virtually every other conceivable pumping application. By connecting multiple impellers in series, vertical turbine pumps can achieve heads of, for example, 40 to 100 meters.

[0003] Vertical turbine pumps typically comprise a motor mounted on some sort of pedestal or motor mount. A motor shaft can be either directly attached to the motor or coupled to it, and extends downward toward the impeller through a column mount or a vertical tube arrangement, also called a riser. The impeller typically contains several impeller blades that rotate with the motor and motor shaft, thus pumping the fluid into the riser.

[0004] EP 2606238 A1 describes a vertical turbine pump that is elongated along a longitudinal direction, with a motor and a motor shaft rotatably coupled to the motor, which drives an impeller. The fluid, pumped vertically upward by the impeller into a riser pipe, exits the riser pipe horizontally above a base plate through a tubular elbow.

[0005] In the prior art designs, the manifold is housed in a cast-iron manifold housing, referred to as a "delivery bend," which is arranged on the base plate as an axial extension of the riser pipe. On the manifold housing, in turn, as an axial extension of the riser pipe, is a cast-iron lantern housing, also referred to as a "motor stool," or, in combination with the "delivery bend," as a DBMS housing, in which the motor shaft is located. Finally, the often very heavy motor is arranged axially on the lantern housing.

[0006] In this respect, there is a considerable risk with the axially elongated DBMS housings known from the state of the art that a motor speed reaches the natural frequency of the aforementioned components and thus causes a resonance case, which can lead to vibrations and possible damage to the vertical turbine pumps. Description of the invention

[0007] Based on this situation, it is an object of the present invention to provide a vertical turbine pump and a corresponding manufacturing method for a vertical turbine pump in which the resonance case is avoided.

[0008] The object of the invention is achieved by the features of the independent claims. Advantageous embodiments are specified in the subclaims.

[0009] Accordingly, the task is solved by a vertical turbine pump with a riser pipe extending along an axis, a motor shaft arranged in the riser pipe and in particular a motor shaft protection pipe for the motor shaft, a manifold housing with a manifold arranged therein and connected to the riser pipe on the pressure side, a lantern housing arranged on the manifold housing and receiving the motor shaft, and a motor arranged on the lantern housing and driving the motor shaft, wherein the manifold housing and / or the lantern housing is designed without a primary shape and has a rectangular cross-section.

[0010] With manifold housings and / or lantern housings known from the prior art, there is a significant risk that, due to the interaction between the rigidity of a structure formed by the manifold housing and / or lantern housing and the mass of the engine, the natural frequency of this structure will be affected during turbine pump operation, resulting in an undesirable resonance that negatively impacts the operation of the vertical turbine pump. This risk essentially arises from the fact that the manifold housings and / or lantern housings known from the prior art do not have a rectangular structure, but rather a round one, which generally has a lower natural frequency than a rectangular structure.

[0011] In other words, the manifold housings and / or lantern housings known from the state of the art, with a regular conical or round shape as a cast and / or welded construction with a minimum wall thickness determined by the casting process and casting material used, allow only very limited control over material properties and little to no possibility of influencing the stiffness of the structure in order to shift the natural frequency into a range that is not critical for the operation of the vertical turbine pump.

[0012] The proposed solution takes a fundamentally different approach from the solutions known from the prior art, in that the manifold housing and / or the lantern housing are, on the one hand, designed without a primary shape, i.e., for example, made of rolled steel, and, on the other hand, have a rectangular cross-section, i.e., for example, a rectangular, square, and / or box-shaped shape. The structure created in this way is stiffer than a cast, conical, or round shape due to a higher modulus of elasticity, allows greater design freedom, is more cost-effective, as standard or common steel profiles can be used to achieve the rectangular, square, and / or box-shaped shape, and also allows for a more compact design, as one base of the manifold housing and / or the lantern housing is designed to be smaller, allowing the manifold housing and / or the lantern housing to be installed in more confined spaces.

[0013] In summary, the proposed solution allows for cost savings through weight reduction and the use of standard components without expensive casting tools. Furthermore, since the mechanical properties of rolled steel, for example, are significantly better than those of gray cast iron, it increases the rigidity of the manifold housing and / or the lantern housing. The rigidity-optimized manifold housing and / or the lantern housing utilizes shear fields to achieve a significant shift in the natural frequency of the vertical turbine pump, significantly reducing vibrations during operation and, as a result, essentially eliminating the possibility of damage to the vertical turbine pump.

[0014] Designed without a primary mold means in particular that the manifold housing and / or the lantern housing is not primary formed, i.e. in particular not manufactured by means of a casting process, i.e. a primary form of the manifold housing and / or the lantern housing is not produced directly from a liquid state, for example by means of a casting mold. Designed without a primary mold also means in particular that the manifold housing and / or the lantern housing is not manufactured according to a manufacturing process in accordance with DIN 8580, i.e. not according to a manufacturing process in which a solid body with a geometrically defined shape is produced from a formless material. In other words, designed without a primary mold means in particular that the direct starting materials for shaping the manifold housing and / or the lantern housing are not in a liquid, gaseous, plastic, granular or powdery state.The manifold housing and / or the lantern housing preferably have a rectangular, square, and / or the aforementioned box-shaped shape, which defines the rectangular cross-section relative to the axis of the riser pipe. Unless otherwise defined, the terms "axial" and "radial" preferably refer to the axis of the riser pipe. The cross-section preferably extends along the radial line and / or the normal of the cross-section runs parallel to the axis.

[0015] The manifold housing and / or the lantern housing, in particular, provide a supporting function for the hydraulics and / or motor of the turbine pump, serve to guide the motor shaft, facilitate maintenance, etc. The stiffer and more robust the manifold housing and / or the lantern housing, the better the vibrations occurring during operation of the turbine pump can be dampened. Compared to a round or cylindrical structure, the proposed rectangular structure is stiffer and thus less subject to vibration. The occurrence of resonance refers, in particular, to a shift in the first and second eigenmodes, which can coincide with an operating frequency of the turbine pump.

[0016] Vertical turbine pumps are semi-axial pumps designed to pump liquids, particularly from open liquid reservoirs, to a higher level. Vertical turbine pumps are often multi-stage, i.e. equipped with more than one impeller. However, they can also be single-stage, i.e. with just one impeller. Each additional impeller increases the head that the pump can generate at a constant flow rate. The riser pipe can have an outer diameter as small as a few centimeters, so that the vertical turbine pump is often considerably longer axially along the axis than it is radially wide. The riser pipe usually extends for the most part below a base plate, to which the vertical turbine pump can be mounted.In this respect, the engine and the manifold are preferably arranged above the base plate in such a way that the riser pipe is connected, in particular in a fluid-tight manner, to a first manifold end just above or at the base plate, and the engine is arranged vertically above the manifold. The riser pipe is preferably made of metal and / or has a circular or circular cross-section.

[0017] The motor shaft preferably extends axially along the centerline of the riser pipe and, for this purpose, passes through the tubular elbow on an outer side in an axial extension of the riser pipe. An opening through which the motor shaft passes can be provided in the elbow on this outer side. Preferably, a seal, in particular a radial seal, is provided, which is arranged in the opening and seals the motor shaft radially and circumferentially in a fluid-tight manner relative to the elbow. Preferably, the motor shaft ends in the lantern housing, in which a coupling can be arranged, which can be switched between the motor and the motor shaft.

[0018] The bend is preferably designed as a pipe bend or in the shape of a pipe bend and / or has a circular arc or elliptical shape when viewed from the side. The bend preferably extends over a circular arc or in the shape of a circular arc over 90°, although other values ​​such as 80° or 100° are also possible. The bend preferably has a curvature continuously away from the axis, which in particular does not mean that the bend initially extends in a direction towards a second bend end facing away from the riser pipe, for example has an S-shaped shape, but rather extends linearly and / or continuously, in particular in the shape of a circular arc or elliptical when viewed from the side, with regard to its radial center line continuously further away from the axis or the riser pipe.Furthermore, the feature that the bend has a curvature continuously away from the axis is to be understood as synonymous with the feature that the bend extends continuously away from the axis with respect to its radial, in particular circular-arc-like, center line. In the case of an elliptical shape, in particular extending over 90°, the minor axis of the ellipse preferably runs parallel to the axis and / or the major axis runs horizontally.

[0019] Preferably, a radial diameter relative to an axis of the manifold initially decreases as the height of the manifold from the first manifold end towards the second manifold end and then increases, which means in particular that at at least one position between the first manifold end and the second manifold end, the height of the manifold is less than the height at the first manifold end and / or at the second manifold end. In side view, the manifold has a particularly "flattened" shape. In particular, in side view, the manifold can again have a "dented" shape on its outer side, wherein the height is particularly reduced to a maximum at the "dent". The radial diameter is understood to mean in particular a radial inner diameter of the manifold relative to the axis of the manifold, which defines a clear height in the manifold through which the fluid can flow.In this respect, when we talk about a reduction or increase in diameter, we can mean not only the inner diameter but also the outer diameter.

[0020] According to a preferred development, the manifold housing and / or the lantern housing is designed without a primary shape, in particular from rolled steel, from sheet metal and / or welded. For example, the manifold housing and / or the lantern housing can have four axially extending flat side walls, for example steel sheets, which are welded at their opposite axial edges to an upper and lower, radially extending, in particular rectangular, fastening plate having an opening. The manifold housing and / or the lantern housing is made in particular of metal, such as iron or aluminum. Welding allows particularly low wall thicknesses to be achieved, which are approximately two to three times thinner than a cast construction. The manifold housing and the lantern housing can be designed in one piece as a single or common housing, i.e. not divided into two housings.

[0021] According to a further preferred embodiment, the manifold housing and / or the lantern housing has axially extending rolled corner and / or angle profiles at its corners, in particular L-profiles, in particular profiles with a triangular cross-section, in particular as L-profiles closed with a diagonal sheet. Another type of angle profile can also be selected, depending on the desired rigidity behavior of the angle profile. Axially and / or longitudinally extending corner and / or angle profiles can transmit longitudinal forces that counteract bending moments. The angle profile is preferably designed as a straight, axially extending, extruded and / or thin-walled profile, for example as a tube or duct profile, which, for the sake of ease of manufacture, can be welded to a flat steel sheet as a side wall without complex edge preparation.If, for example, an additional stiffening profile is required during operation of the vertical turbine pump to further increase rigidity, such an additional stiffening profile can be simply welded onto the manifold housing and / or lantern housing, unlike prior art manifold housings and / or lantern housings with conical or cylindrically shaped and cast side walls. The angle profiles are preferably directed outward, i.e., the legs of the angle profiles extend radially away from the axis to thereby increase shear and flexural rigidity. L-profiles closed with a diagonal sheet provide high rigidity and are easy to manufacture.

[0022] According to another preferred embodiment, the manifold housing and / or the lantern housing has at least two opposing, axially extending, flat side walls. Such flat, in particular spaced, rectangular and / or parallel side walls allow for the utilization of shear resistance to effectively dampen unwanted vibrations. The side walls can be arranged between two angle profiles provided at the corners and, in particular, welded to them and / or extend over the entire axial extent of the angle profiles and / or between the fastening plates. In this way, the rigidity can be further increased, since the side walls serve as a so-called shear profile. In particular, a box-shaped manifold housing and / or lantern housing, preferably without curvatures, allows for high rigidity.

[0023] According to a further preferred embodiment, an axially and radially extending flat stiffening element extends from the side wall. The stiffening element can be profile-like, rectangular, and / or flat, in particular extending orthogonally from the side wall and / or being welded to it, and allows for an advantageous influence on the natural frequency. The stiffening element preferably extends along the entire axial extent of the side wall, the angle profile, the manifold housing, and / or the lantern housing and / or is connected to the mounting plates, in particular being welded to them.

[0024] According to another preferred embodiment, an opening is provided in the side wall. The opening can be designed as a recess in the side wall, so that the side wall extends, for example, only over part of the axial extent of the lantern housing and / or the lantern housing. The opening can be closed with a ventilation grille or the like and / or can serve for maintenance of the lantern housing and / or the lantern housing.

[0025] According to a further preferred embodiment, the manifold housing and the lantern housing and / or the lantern housing and the engine, in particular an engine housing of the engine, are screwed together, in particular at regular intervals and / or at the corners. According to another preferred development, the manifold housing and / or the lantern housing has a radially extending fastening plate, in particular in the form of a rectangular flange, in particular with a rectangular cross-section, at at least one axial end, in particular at both axial ends.

[0026] Preferably, the manifold housing and the lantern housing and / or the lantern housing and the engine, in particular the engine housing of the engine, are connected to one another by screws passing through the respective fastening plates. Preferably, a rectangular and / or mold-free base element is provided, which also preferably has a respective radially extending fastening plate, in particular with a rectangular cross-section, at both axial ends. The base element is preferably provided between the manifold housing and a base plate, preferably a base, wherein more preferably the base element is screwed to the manifold housing and / or the base plate by the respective fastening plate. The fastening plate preferably has a particularly rectangular or round opening through which, for example, the motor shaft is passed.

[0027] According to a further preferred embodiment, the manifold housing, the lantern housing, and / or the motor are arranged in the axial extension of the riser pipe, and / or the lantern housing is arranged in the axial extension of the riser pipe between the manifold housing and the motor. In other words, the motor is preferably arranged above the lantern housing, and the lantern housing is preferably arranged above the siren housing. According to another preferred development, the manifold housing and / or the lantern housing are box-shaped, in particular rectangular.

[0028] According to a further preferred embodiment, the vertical turbine pump has an impeller arranged at an opposite, lower riser end and driven by the motor shaft for conveying a fluid into the riser. The riser and / or the vertical turbine pump preferably has an axial longitudinal extent of ≥ 10, 20, 30, 40 m, or more. A plurality of impellers arranged axially one behind the other can be provided at the lower first riser end, through which the fluid is conveyed into the riser and axially upwards to the elbow. A second riser end is preferably connected, in particular screwed, to the first elbow end in a fluid-tight manner.

[0029] The object is further achieved by a method for producing a manifold housing for a manifold which can be arranged therein and connected on the pressure side to a riser pipe and / or a lantern housing for receiving a motor shaft of a vertical turbine pump which can be driven by a motor, with the riser pipe extending along an axis and the motor shaft arranged in the riser pipe, with the step: shaping, in particular producing, the manifold housing and / or the lantern housing with a rectangular cross-section without the need for a primary shape.

[0030] According to a preferred embodiment, mold-free design comprises manufacturing from rolled steel, from sheet metal and / or by welding.

[0031] According to another preferred development, the shaping without the need for a primary shape comprises welding axially extending angle profiles, in particular L-profiles, in particular profiles with a triangular cross-section, provided at corners of the manifold housing and / or the lantern housing, to a radially extending fastening plate, in particular with a rectangular cross-section, provided at at least one axial end, in particular at both axial ends, of the manifold housing and / or the lantern housing.

[0032] According to a further preferred embodiment, mold-free design comprises providing at least two opposite, axially extending flat side walls.

[0033] According to another preferred development, the original form-free design comprises a box-shaped design of the manifold housing and / or the lantern housing.

[0034] Further advantages and refinements of the method will become apparent to the person skilled in the art in analogy to the vertical turbine pump described above. Short description of the drawings

[0035] The invention is explained in more detail below with reference to the attached drawings using preferred embodiments.

[0036] The drawings show Fig. 1 is a schematic sectional view of a vertical turbine pump with a manifold housing and a lantern housing according to a preferred embodiment of the invention, Fig. 2 is a schematic perspective view of the manifold housing and the lantern housing of the vertical turbine pump according to Fig. 1 according to the preferred embodiment of the invention, Fig. 3 a schematic transparent plan view of the lantern housing of the vertical turbine pump according to Fig. 1according to a further preferred embodiment of the invention, Fig. 4 a schematic perspective view of the lantern housing of the vertical turbine pump according to Fig. 1 according to yet another preferred embodiment of the invention, Fig. 5 is a schematic perspective view of the lantern housing of the vertical turbine pump according to Fig. 1 according to yet another preferred embodiment of the invention, and Fig. 6 is a schematic perspective view of the lantern housing of the vertical turbine pump according to Fig. 1 according to yet another preferred embodiment of the invention. Detailed description of the implementation examples

[0037] Fig. 1 shows a schematic sectional view of a vertical turbine pump 1 with a graphically abstracted manifold housing 2 having a manifold 3 and a graphically abstracted lantern housing 11 according to a preferred embodiment of the invention.

[0038] 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 centrally in 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 encircling the motor shaft 6 between the motor shaft 6 and the riser pipe 5, through which free space the fluid pumped by the vertical turbine pump 1 rises axially upwards. For this purpose, a plurality of impellers 8 arranged axially one above the other are provided at a lower end 7 of the riser pipe. These impellers are driven by the motor shaft 6, suck in the fluid, and pump it into the free space.

[0039] The riser pipe 5 is fastened by its upper riser pipe end 9 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, vertically or in the direction of the axis 4, the manifold housing 2 is initially connected, touching upwards. To this manifold housing 2, in turn, the lantern housing 11 is connected, touching axially, and finally a motor 12, which drives the motor shaft 6 and is 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 manifold housing 2 and the lantern housing 11 are designed in two parts and are screwed together, as described below. The upper riser pipe end 9 is connected in a fluid-tight manner to a first manifold end of the manifold 3, which faces the impeller 8.

[0040] Now referring to Fig. 2 which is a schematic perspective view of the manifold housing 2 and the lantern housing 11 of the vertical turbine pump 1 according to Fig. 1 according to the preferred embodiment of the invention, as well as Fig. 3 which is a schematic sectional view of a plan view of the lantern housing 11 of the vertical turbine pump 1 according to Fig. 1 according to another Fig. 2 slightly supplemented preferred embodiment of the invention, both the manifold housing 2 and the lantern housing 11 are, on the one hand, made without a primary shape, i.e. from welded metallic sheets of rolled steel and profiles, and, on the other hand, both the manifold housing 2 and the lantern housing 11 have a rectangular cross-section in plan view.

[0041] Specifically, the manifold housing 2 as well as the lantern housing 11 have at its corners four corners each axially extending, spaced apart and designed as outwardly open L-profiles, which are each closed, i.e. triangular in cross-section, as can be seen in particular from Fig. 3 recognizable ( Fig. 1 (does not show the L-profiles). Between two adjacent angle profiles 14, axially extending flat side walls 15 made of sheet metal are provided, which are welded to the angle profiles 14.

[0042] The four side walls 15 extend, at least on the lantern housing 11, only along a part of the axial extent of the angle profiles 14, with an opening 16 for servicing the lantern housing 11 being provided in the other part, which opening 16 is covered by a removable grille. The manifold housing 2 also has four side walls 15, but one side wall 15 is closed in that the manifold 3 passes through this side wall 15, shown at the front left in the figure. In the embodiment of the Fig. 3 the two side walls 15 shown above and below 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.

[0043] Returning to Fig. 2The manifold housing 2 has at each of its two axial ends a radially extending fastening plate 18 with a rectangular cross-section, which, as well as Fig. 3 As can be seen for the lantern housing 11, it is provided with a circular opening enclosed by the side walls 15 for the passage of the riser pipe 5. The lantern housing 11 also has such a fastening plate 18 at its lower axial end, which is designed or arranged congruently with and in contact with the upper fastening plate 18 of the manifold housing 2. At its upper axial end, the lantern housing 11 has an octagonal fastening plate 18, which rests in contact with a circular base of the engine housing. The respective fastening plates 18 thus extend orthogonally to the side walls 15 and are welded to these and to the angle profiles 14.

[0044] Axially below the manifold housing 2, a base element 19 is provided which is also free of original form and box-shaped and which also has a fastening plate 18 at its lower axial ends. The base element 19 is designed and arranged at its upper axial end congruent with and in contact with the lower fastening plate 18 of the manifold housing 2. The base element 19 is furthermore, like the lantern housing 11 of the Fig. 3 provided with axially and radially extending rectangular stiffening elements 17 made of sheet metal.

[0045] The base element 19 is fastened to a base by its fastening plate 18, not shown. The manifold housing 2, which is placed axially on the base element 19, is fastened to the base element 19 by screws guided through the lower fastening plate 18 of the manifold 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, which is placed axially on the manifold housing 2, is likewise fastened by screws guided through the respective fastening plates 18, wherein the screws are again provided at regular intervals on the one hand and at the corners of the fastening plate 18 on the other. Finally, the motor housing of the motor 12, which is placed 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.

[0046] Figs. 4 to 6each show a schematic perspective view of the lantern housing 11 of the vertical turbine pump 1 according to Fig. 1 according to a respective further preferred embodiment of the invention and with a respective stiffening element 17. In the embodiment of the 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 mounting plates 18 and the oppositely arranged angle profiles 14, while the other strut is welded diagonally to the first strut and split into two at each end onto the center of the continuous strut.

[0047] Fig. 5shows a similar design, but with four struts designed as crossed U-profiles as stiffening elements 17. Two struts extend parallel to the two remaining struts, which also extend parallel to each other. The rectangular struts are each welded along their longitudinal edges to the side wall 15, while the transverse edges are welded to the angle profiles 14. Fig. 6 finally 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 opposite fastening plates 18.

[0048] The described embodiments are merely examples that can be modified and / or supplemented in a variety of ways within the scope of the claims. Each feature described for a specific embodiment can be used independently or in combination with other features in any other embodiment. Any feature described for an embodiment of a particular category can also be used in a corresponding manner in an embodiment of a different category. List of reference symbols

[0049] Vertical turbine pump 1 Manifold housing 2 Manifold 3 axis 4 riser pipe 5 Motor shaft 6 Lower riser end 7 balance bike 8 Upper riser end 9 base plate 10 Lantern housing 11 Motor 12 coupling 13 Angle profile 14 side wall 15 opening 16 stiffening element 17 Mounting plate 18 Floor element 19

Claims

1. Vertical turbine pump (1) with a riser pipe (5) extending along an axis (4), a motor shaft (6) arranged in the riser pipe (5), a manifold housing (2) with a manifold (3) arranged therein and connected to the riser pipe (5) on the pressure side, a lantern housing (11) arranged on the manifold housing (2) and receiving the motor shaft (6), and a motor (12) arranged on the lantern housing (11) and driving the motor shaft (6), wherein the manifold housing (2) and / or the lantern housing (11) is designed to be free of original shapes and has a rectangular cross-section.

2. Vertical turbine pump (1) according to the preceding claim, wherein the manifold housing (2) and / or the lantern housing (11) is designed without a primary shape from rolled steel, from sheet metal and / or welded.

3. Vertical turbine pump (1) according to one of the preceding claims, wherein the manifold housing (2) and / or the lantern housing (11) has axially extending angle profiles (14) at its corners, in particular L-profiles, in particular triangular profiles in cross-section.

4. Vertical turbine pump (1) according to one of the preceding claims, wherein the manifold housing (2) and / or the lantern housing (11) has at least two opposite, axially extending flat side walls (15).

5. Vertical turbine pump (1) according to the preceding claim, wherein an axially and radially extending planar stiffening element (17) extends away from the side wall (15).

6. Vertical turbine pump (1) according to one of the two preceding claims, wherein an opening (16) is provided in the side wall (15).

7. Vertical turbine pump (1) according to one of the preceding claims, wherein the manifold housing (2) and the lantern housing (11) and / or the lantern housing (11) and the motor (12), in particular a motor housing of the motor (12), are screwed together, in particular at regular intervals and / or at the corners.

8. Vertical turbine pump (1) according to one of the preceding claims, wherein the manifold housing (2) and / or the lantern housing (11) has at least one axial end, in particular at both axial ends, a radially extending fastening plate (18), in particular with a rectangular cross-section.

9. Vertical turbine pump (1) according to one of the preceding claims, wherein the manifold housing (2), the lantern housing (11) and / or the motor (12) is arranged in an axial extension of the riser pipe (5) and / or the lantern housing (11) is arranged in an axial extension of the riser pipe (5) between the manifold housing (2) and the motor (12).

10. Vertical turbine pump (1) according to one of the preceding claims, wherein the manifold housing (2) and / or the lantern housing (11) is box-shaped.

11. Vertical turbine pump (1) according to one of the preceding claims, with an impeller (8) arranged at an opposite, lower riser pipe end (7) and driven by the motor shaft (6) for conveying a fluid into the riser pipe (5).

12. Method for producing a manifold housing (2) for a manifold (3) which can be arranged therein and connected on the pressure side to a riser pipe (5) and / or a lantern housing (11) for receiving a motor shaft (6) of a vertical turbine pump (1) which can be driven by a motor (12) and has the riser pipe (5) extending along an axis (4) and the motor shaft (6) arranged in the riser pipe (5), with the step: shaping the manifold housing (2) and / or the lantern housing (11) with a rectangular cross-section without the need for a primary shape.

13. Method according to the preceding method claim, wherein the forming without primary form comprises manufacturing from rolled steel, from sheet metal and / or by welding.

14. Method according to one of the preceding method claims, wherein the shaping without primary form comprises welding axially extending angle profiles (14), in particular L-profiles, in particular profiles with a triangular cross-section, provided at corners of the manifold housing (2) and / or the lantern housing (11), to a radially extending fastening plate (18), in particular with a rectangular cross-section, provided at at least one axial end, in particular at both axial ends, of the manifold housing (2) and / or the lantern housing (11).

15. Method according to one of the preceding method claims, wherein the original form-free design comprises providing at least two opposite, axially extending flat side walls (15), and / or wherein the original form-free design comprises a box-shaped design of the manifold housing (2) and / or the lantern housing (11).

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