WO2011035985A1

WO2011035985A1 - Adapter and pump system

Info

Publication number: WO2011035985A1
Application number: PCT/EP2010/061865
Authority: WO
Inventors: Sönke BRODERSEN; Franz Bosbach
Original assignee: Ksb Aktiengesellschaft
Priority date: 2009-09-23
Filing date: 2010-08-16
Publication date: 2011-03-31
Also published as: DE202009018129U1; DE102009042620A1

Abstract

The present invention relates to an adapter (10) for a pump system (100), wherein the pump system (100) comprises at least one pump (20) and at least one connecting element (30), in particular at least one connecting pipe (30), and wherein the pump (20) and connecting element (30) can be connected directly and/or indirectly to one another by means of the adapter (10). The invention furthermore relates to such a pump system (100).

Description

description

Adapter and pump system

The present invention relates to an adapter for a pump installation, wherein the pump installation comprises at least one pump and at least one connection element, in particular at least one connection pipe, and wherein the pump and connection element can be indirectly and / or directly connected to one another by means of the adapter. Furthermore, the invention relates to such a pump system.

Previously known pump systems have the disadvantage that they are usually oversized. In detail, this means, among other things, that the pumps and motors are usually chosen too large and thus regularly operated only in partial load operation.

In existing plants, an adaptation can currently be made by using partial load wheels or smaller pump sizes. However, especially when using smaller pump sizes, the problem arises that the connections, in particular the flanges of pumps and system components, do not match.

Furthermore, it would be desirable to be able to use over-synchronously operated pumps. This is made possible by the now available high-efficiency motors and the increasing use of regulated pumps. For a certain operating point it would then be possible to use smaller motors or smaller pump sizes use. However, there is also the problem here that the connections, in particular the flanges of pumps and system components, do not match due to deviating diameters.

The approaches known from the prior art are so far not satisfactory, since they are not particularly simple and / or not easy to install, do not allow flow-optimized fluid management and / or have no compact dimensions.

In particular, conventional adapters are provided with respective end flanges, so that these adapters have no compact dimensions due to the necessary minimum distance between the flanges for adequate accessibility of the Flanschverschraubung.

From US 2,144,417 a pump is known in which the pump outlet has an increase in diameter. The increase in diameter is formed in that an insert with a widening inner bore is inserted into the pump housing in a form-fitting manner and is partially overlapped by a flange attachment.

US 1,914,919 discloses a fitting for a pump and a fluid-carrying tube, wherein the fitting is screwed end-to-end to the pump and the tube. Furthermore, an embodiment of a connecting piece is shown in which the connecting piece is connected in each case to the end by means of a flange connection with pump and tube.

From GB 399,891 there is further known an insert for a pressure medium motor, which is fastened to the engine inlet by means of a fastening collar. The insert has for connection to a hose for the supply of fluid to several circumferential sealing beads on the z. B. a hose can be pushed. It is therefore an object of the present invention to develop an adapter of the type mentioned in an advantageous manner, in particular to the effect that it is simple in construction and easy to install, allows a flow-optimized fluid guide and has compact dimensions.

This object is achieved by an adapter with the features of claim 1. Thereafter, it is provided that an adapter is a connecting element for a pump installation, wherein the pump installation comprises at least one pump and at least one connection element, in particular at least one connection pipe, and wherein the pump and connection element can be indirectly and / or directly connected to one another by means of the adapter. In this case, the adapter has a flange, by means of which pump and adapter can be connected by means of a flange connection. Next, the adapter on a socket, by means of the adapter and connection element are pushed into one another connectable. Preferably, the connection element is a connection pipe. An indirect connection can be realized, for example, by the fact that in each case sealing elements such as sealing washers, rings and / or sleeves are provided between adapter and pump and / or connecting element. It is also conceivable that adapter and pump or adapter and connecting element abut each other directly and sealing elements such as sealing rings in grooves o. Ä. seal the interconnected components of the pump system.

In particular, there is the advantage that a part of the dimensions of the adapter can disappear in the connection element, so that the dimensions of the mounted adapter or the assembled connection consisting of adapter, pump and connection element are compact. It is conceivable that only the strength of the flange of the adapter is included in the axial dimensions of the assembled connection, if the adapter otherwise has only the fully insertable into an opening of the connecting element connecting piece.

It is particularly advantageous in particular that the connection made possible with the adapter provides an easily accessible flange connection between pump and adapter optionally, which can be easily solved during a maintenance work. Since experience shows that the connection between adapter and connection element with a connecting pipe of the pump system must be very rarely solved, it is not necessary to provide an easily accessible flange connection here. Here, the usual mounting criteria can be used, since the adapter corresponds to the existing flanges. By this type of connection, in particular a compact dimension of the adapter or the assembled connection comprising the adapter can be achieved. In particular, it is possible to carry out the adapter in one piece or in one piece.

Furthermore, it can be provided that the adapter reduces the diameter of the connection element to the diameter of a connection of the pump. The diameter may be the nominal diameter of the corresponding fluid-carrying element, such as. B. the inner diameter of a pipe or a connecting piece. For example, it may be provided that the connecting piece protruding into the connecting piece end has an opening which corresponds to the diameter of the connecting element or is approximated. In the axial direction of the adapter, the inner diameter of the fluid-carrying opening of the adapter can then be reduced to the diameter of the connection of the pump. It is preferred if the diameter of the fluid-conducting opening of the adapter continuously or steadily reduced. In particular, it is advantageous if no projections or edge-like transitions are provided.

In addition, it is possible that the connection of the pump is a suction nozzle and / or a discharge nozzle. It is advantageously irrelevant for the design of the adapter, whether it is arranged on a pressure or suction side of a pump.

It is conceivable that the diameter of the connection element and / or the diameter of the connection of the pump is a standardized by a kit diameter and / or that the adapter has a flange with a wall thickness which is dimensioned such that it is the diameter difference resulting difference in length in the axial direction. Experience shows smaller pumps also smaller dimensions in the longitudinal direction. If now a larger, oversized pump in an existing pump system is replaced by a smaller, advantageously sized pump, there is inevitably a difference in the longitudinal or axial direction. Since in addition to the dimensions of the diameter and the dimensions in the longitudinal or axial direction are known, this known difference can be taken into account in an increased wall thickness of the flange of the adapter. It is possible in particular, for any jumps in the kit, so z. B. from a diameter to the next smallest or even smaller diameter already compensate for the respective difference in length by an increased wall thickness of the flange of the adapter from the outset.

Furthermore, it can be provided that the diameters of the connection element and of the connection of the pump differ by one or more steps from the construction kit. Such a modular system can be defined by technical standards, regulations, internal guidelines or in an analogous manner.

It is also possible that the adapter and the connecting element are screwed into one another. For this purpose, for example, a thread may be provided on the neck of the adapter.

In addition, it can be provided that the adapter and the connection element can be connected to one another in a form-fitting and / or frictionally engaged manner. For example, adapter and connection element can be connected to one another by means of a press fit.

It is further provided that an eccentric adapter training compensates for a center offset between the pump and the connection element. This training is used in those cases in which a smaller pump to be used may also have a lower altitude of the pump shaft to an existing pump installation level. As a result, a flow passage within the adapter is arranged eccentrically to the connecting surfaces between the pump and / or connecting piece, thus providing a stress-free integration with a to obtain existing plant. An adaptation of the Pumpenaufstellelemente to such a modified configuration can be provided in the simplest case on a case by case basis. This can also be done analogously on the pressure side of the pump.

It is preferred if the dimensions of adapter, pump and connecting element are chosen such that the pump is operable by a frequency-controlled drive motor with super-synchronous speed.

It is conceivable that the adapter has at least one flow distribution means, preferably at least one diffuser. To adjust the length, the adapter can also be designed as a stage iffusor. The flow-distributing means or the diffuser can thereby extend from one axial end to the other end of the adapter. The flow-distributing means can also be designed as baffles or other separate built-in parts. Preferably, the wall heights of the baffles increase as the opening diameter of the adapter increases, i. H. that the wall height in the region of the transition to the connecting element is highest. In this case, the wall height end side connection element side be maximum and end pump side minimal, especially zero, be.

Furthermore, it can be provided that the adapter has at least one vibration-damping element.

It is also possible that the adapter has at least one vibration-decoupling element.

It can be advantageous if the adapter has at least one element for the indirect and / or direct determination of measured values, in particular at least one element for measuring pressure, temperature and / or flow velocity. For this purpose, corresponding sensors can be arranged or integrated in the adapter itself. For example, it is possible for the element or at least one sensor to be in signal connection with the pump control and, if appropriate, for the pump power or rotational speed of the pump to be changed on the basis of the measured values. In addition, it can be provided that the adapter is formed at least partially flow optimized.

It is also conceivable that the adapter has at least one fitting. Such a fitting may for example be a suitable operating element for the pump in particular or the pump system in general. In particular, the valve may be a stopcock, a butterfly valve, a gate valve, a breather, a combined non-return flow restrictor (KFR) valve, a condensate drain, and / or a backflow preventer.

Furthermore, at least one sealing element is provided between the adapter and the pump and between the adapter and the connecting element.

Furthermore, the invention relates to a pump system with the features of claim 19. Thereafter, it is provided that a pump system has at least one pump, at least one connection element and at least one adapter according to one of claims 1 to 18.

Further details and advantages of the invention will be illustrated with reference to an embodiment shown in more detail in the drawing. It shows:

Figure 1: a sectional view of a pump system according to the invention, and the

Figures 2 & 3: other forms of training.

Figure 4: a pump system with various forms of training

1 shows a sectional view of a pump system 100, wherein the components to be interconnected adapter 10, pump 20 and connecting element 30 are shown detached from each other. The connecting element 30 has an inner diameter d3o and is preferably designed as a connecting tube 30. For the standard connection, a flange 31 is provided, which is usually flanged to the adjacent component such as a pump.

In the case shown here, however, a previously used, oversized and not shown pump from a kit against a smaller and over-synchronous operable pump 20 is to be replaced from this or another kit. The pump 20 thus has a smaller inner diameter d2o in the pump nozzle 22 as the connecting element 30. The pump 20 is located for this purpose two stages below the stage of the connecting element 30, d. H. the nominal inner diameters d2o and d3o are two inner diameter steps apart. Each stage is assigned a pump with a specific rated power.

As will be readily apparent from Figure 1, the flange 42 of the pump 20 and the flange 31 of the connection element 30 can not be interconnected because their diameters are not compatible.

The connection between the pump 20 and connecting element 30 is therefore realized by an integrally designed adapter 10. On the pump side, the adapter 10 has a flange 41, by means of which the adapter 10 can be flanged onto the pump neck 42 or pump flange 42 in order to form a flange connection 40. On the pump side, the adapter 10 has a virtually identical inner diameter as the inner diameter d 2 o in the pump neck 22 of the pump 20, so that a flow-optimized transition of a length L between adapter 10 and pump 20 is created.

The flange 41 of the adapter 10 has a wall thickness s, which is dimensioned such that the difference in length in the axial direction, which is caused by the smaller pump 20, is compensated. In detail, this means that the wall thickness s is increased exactly by the amount that the two-stage smaller selected pump 20 in the mounted state of the mounted connection elements 30th is removed, based on the distance between the end faces of the flanges 31 and 42. This distance is previously known due to the flange sizes and attachment points of the pump 20 from a kit and the connection element 30, so that the wall thickness s can also be standardized. Thus, a standardized wall thickness s of the flange 41 of the adapter 10 can be provided for each step.

The adapter 10 has, on the connection element side, a connecting piece 12 which can be pushed completely into the opening of the connecting element 30. In the illustrated embodiment, the nozzle 12 is fixed by means of press fit in the connection element 30. This results in a very compact connection of the pump 20 and connecting element 30 in the mounted state, because the adapter 10 is only involved with the wall thickness s on the dimensions in the axial direction. As described above, the adapter 10 must anyway realize this length compensation in order to close the distance from the reduced pump 20 to the connection element 30. However, the main dimensions of the adapter 10 disappear inside the connector 30, thus providing a connection with compact dimensions. In particular, the flange 40 is easily accessible, so that if necessary, the pump 20 can be quickly solved by the adapter 10.

In the interior of the adapter 10, a diffuser 50 is further arranged, which distributes the inflowing or outflowing fluid uniformly over the inner diameter of the adapter 10 which widens or reduces depending on the flow direction. Advantageously, the diffuser 50 has a plurality of, if necessary, helically curved baffles whose wall height also decreases with decreasing inner diameter of the adapter 10. Here, the wall height end side connection element side maximum and end pump side zero.

Thus, by the adapter 10, a flow-optimized transition from the connecting element 30 with nominal inner diameter d3o to the nominal inner diameter d2o of the pump nozzle 20 are formed, so the diameter difference A _{d are} bridged flow optimized. In principle, it is conceivable that, although not shown in detail in Figure 1, the adapter is equipped with sensors for temperature, pressure and / or flow rate detection. It is also conceivable that a vibration-damping element or a vibration-decoupling element is provided, preferably in and / or at the connecting surfaces between the adapter 10 and pump 20 or between the adapter 10 and the connection element 30. In principle, it is further conceivable that a valve not shown in detail Adapter 10 is arranged.

FIG. 2 shows the integration of two sealing elements (60) between connecting piece (30) and adapter (10) and between adapter (10) and pump (20). In addition, in this case, the adapter (10) is screwed into the fitting (30) as an example of an internal screw connection.

FIG. 3 shows the use of the various flange holes (70) for fastening the adapter (10) between the pump (20) and the connecting piece (30). Between connection piece (30) and adapter (10) takes place a connection by screwing elements (71) are inserted through the flange openings. In contrast, the adapter (10) on a smaller diameter on a bolt circle on which a plurality of threaded holes (75) are arranged distributed. In this bolt (76) are then used to connect the adapter (10) with the pump (20). Additionally, here the adapter (10) is shown as a step end iffusor of length (L) between pump (20) and fitting (30). The diameter of the diffuser (dio) should preferably be chosen between the diameter (d2o) of the pump and the diameter (d3o) of the connection piece.

Figure 4 shows the arrangement of a concentric adapter (10k) on the pump discharge port (23) for connection to the pressure line (30d) and additionally an eccentrically shaped adapter (10e) with variable length L on the circumference

suction-side pump connection (24) for connection to the suction line (30s). The adapter according to the invention can flow side rectified (1 1 a) or curved walled (1 1 b) are shown. Thus, a quick adaptation to a piping system is possible in the simplest way. According to the Pumpenbaufornn the adapter can also have a reverse arrangement. Likewise, adapters of only one design can be used.

Claims

claims

Adapter and pump system

Adapter (10) for a pump installation (100), wherein the pump installation (100) comprises at least one pump (20) and at least one connection element (30), in particular at least one connection pipe (30), and wherein the pump (20) and connection element (30 ) are indirectly and / or directly connectable to each other by means of the adapter (10), characterized in that the adapter (10) has a flange (41) by means of the pump (20) and adapter (10) by means of a flange (40) connectable are, and that the adapter (10) has a connecting piece (12), by means of which the adapter (10) and connecting element (30) are connectable to one another.

Adapter (10) according to claim 1, characterized in that the adapter (10) reduces the diameter (d3o) of the connection element (30) to the diameter (d2o) of a connection (22) of the pump (20).

Adapter (10) according to claim 2, characterized in that the connection (22) of the pump (20) is a suction nozzle (22) and / or a discharge nozzle (22).

Adapter (10) according to claim 2 or 3, characterized in that the diameter (d3o) of the connection element (30) and / or the diameter (d2o) of the connection (22) of the pump (20) is standardized by a modular system Diameter is and / or that the adapter (10) has a flange (41) with a wall thickness (S), which is dimensioned such that it compensates for the diameter difference resulting difference in length in the axial direction.

5. Adapter (10) according to claim 4, characterized in that the diameters (d2o, d3o) of the connection element (30) and the connection (22) of the pump (20) differ by one or more stages from the modular system.

6. Adapter (10) according to any one of the preceding claims, characterized in that the adapter (10) and the connecting element (30) by internal and / or external screw means (121) are connectable.

7. Adapter (10) according to one of claims 1 to 5, characterized in that the adapter (10) and the connection element (30) are positively and / or frictionally connected to one another.

8. Adapter (10) according to one of the preceding claims, characterized in that an eccentric adapter training a center offset between the pump (20) and connecting element (30) compensates.

9. Adapter (10) according to any one of the preceding claims, characterized in that the dimensions of the adapter (10), pump (20) and connection element (30) are selected such that the pump (20) is operated synchronously by a frequency-controlled drive motor ,

10. Adapter (10) according to any one of the preceding claims, characterized in that the adapter (10) has at least one flow distribution means (50), preferably at least one diffuser (50).

1 1. Adapter (10) according to claim 10, characterized in that the adapter (10) is designed as a stage end iffusor.

12. Adapter (10) according to any one of the preceding claims, characterized in that the inserted length (L) distributed over the circumference varies between zero and twice the flange diameter.

13. Adapter (10) according to any one of the preceding claims, characterized in that the fluid-side wall (1 1) is executed rectilinear, stepped or curved.

14. Adapter (10) according to any one of the preceding claims, characterized in that the adapter (10) has at least one vibration-damping element.

15. Adapter (10) according to any one of the preceding claims, characterized in that the adapter (10) has at least one vibration-decoupling element.

16. An adapter (10) according to any one of the preceding claims, characterized in that the adapter (10) has at least one element for the indirect and / or immediate determination of measured values, in particular at least one element for measuring pressure, temperature and / or flow rate.

17. Adapter (10) according to any one of the preceding claims, characterized in that the adapter (10) is at least partially formed flow optimized.

18. Adapter (10) according to one of the preceding claims, characterized in that the adapter (10) has at least one fitting.

19. Adapter (10) according to one of the preceding claims, characterized in that between the adapter (10) and pump (20) and between the adapter (10) and connection element (30) at least one sealing element (60) is provided.

20. Pump system (100) with at least one pump (20) and at least one connection element (30) and with at least one adapter (10) according to one of claims 1 to 18.