EP4232215B1 - Modular spray bar system for selectively cooling and/or lubricating rolls - Google Patents

Description

Field of invention

The present invention relates to a modular spray bar system for selective cooling and/or lubrication of rolls and/or rolling stock, in particular roll barrels, in a rolling stand.

State of the art

Spray bars for applying a cooling and/or lubricating medium to the surface of rolls arranged in a roll stand are basically known from the prior art. Such spray bars are designed individually for the corresponding rolling stand and the rolling task and are made in one piece, so that an adaptation of the rolling stock as well as changing rolling tasks and/or a different type of system always requires a complete replacement.

For example, this reveals DE 10 2009 040 876 A1 a spray bar for cooling a roll arranged in a roll stand, which is made in one piece and is arranged in the roll stand so as to be pivotable about a pivot axis parallel to the roll axis, and allows individual cooling.

Furthermore, from the US 4,247,047 a spray bar with a one-piece base body is known, which can be modularly equipped with differently designed nozzle plates in order to be able to react flexibly to changing rolling tasks.

The present invention is therefore based on the object of developing a spray bar in such a way that it can be easily adapted to changing rolling tasks, can be produced inexpensively and does not require any reserve parts to be kept.

According to the invention, the object is achieved by a modular spray bar system with the features of patent claim 1.

The modular spray bar system according to the invention for selective cooling and/or lubrication of rolls and/or rolling stock comprises at least one central connection block with at least one first fluid connection, which opens into a first main bore extending in the direction of a spray bar axis and which forms part of a first main fluid channel of a spray bar forms, and at least one first transverse bore which extends transversely from the first main bore and opens into a first fluid outlet opening; at least two central extension blocks that can be connected to the central connection block, each of the central extension blocks having a first main bore extending in the direction of the spray bar axis, which forms part of the first main fluid channel of the spray beam, and at least one first transverse bore that extends transversely from the first main bore and opens into a first fluid outlet opening; at least two outer extension blocks connectable to the central extension blocks, each of the outer extension blocks having a first main bore extending in the direction of the spray bar axis and forming part of the first main fluid channel of the spray bar, and at least one first transverse bore extending transversely from the first main bore and opens into a first fluid outlet opening; at least two outer connection blocks that can be connected to the outer extension blocks, each with at least one second fluid connection, which opens into a first main bore that is closed on one side and extends in the direction of the spray bar axis, the one forms the end part of the first main fluid channel of the spray bar; and at least one bracing element by means of which the spray bar formed from the different blocks can be braced.

The completely modular spray bar system allows a solution tailored to the respective requirements of the rolling stand and/or changing rolling task, in that the respective blocks can be individually assembled to form a spray bar. Since the system according to the invention only includes four different types of blocks, series production of these is particularly cost-effective and does not require the respective customer to keep reserve parts, so that additional storage costs can be saved. The modular structure of the entire spray bar also allows for quick replacement if one or more blocks wear out, without the entire spray bar having to be laboriously dismantled and maintained.

Further advantageous embodiments of the invention are specified in the dependent claims. The features listed individually in the dependent claims can be combined with one another in a technologically sensible manner and can define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, with further preferred embodiments of the invention being presented.

In an advantageous embodiment variant it is provided that each of the blocks has a second main bore which runs parallel to the first main bore and which each forms part of a second main fluid channel of the spray bar. In this context, it is particularly preferably provided that each of the blocks selected from the series of central connection block, central extension block and outer extension block comprises at least one second transverse bore which extends transversely from the second main bore and opens into a second fluid outlet opening. It is particularly preferred here that the second main fluid channel has a larger cross section than the first main fluid channel, via which the cooling and/or lubricating medium for roller barrel cooling can be conveyed within the spray bar to the respective transverse bores and the adjoining fluid or coolant outlet openings. Through the different channels, the cooling and/or lubricating medium can also be conveyed with the same or different pressures, so that adaptation to the rolling task to be performed is guaranteed.

In principle, the second main fluid channel can be fluidly connected to the first main fluid channel. However, it is advantageously provided that both main fluid channels are not fluidly connected to one another and that each of the outer connection blocks then comprises at least one third fluid connection which opens into the second main bore. It is preferably provided that the second main bore of each of the outer connection blocks is closed on one side.

In a further advantageous embodiment variant it is provided that each of the blocks comprises at least one nozzle plate for receiving spray nozzles. Each of the nozzle plates advantageously comprises at least two openings arranged one above the other into which the spray nozzles for cooling and/or lubrication can be inserted. It is particularly preferred that all nozzle plates are standardized in terms of their dimensions, so that only one basic type of nozzle plate is required for the different blocks. Using differently designed spray nozzles, which are available in a wide range in terms of flow rate and spray characteristics, the spray bar and the nozzles can be adapted to the corresponding cooling and/or lubrication requirements.

In principle, a single nozzle plate with the corresponding spray nozzles can be arranged on each of the blocks, with the exception of the central connection block. It is advantageously provided that the central connection block comprises two nozzle plates, each of the nozzle plates in turn comprising two openings for the spray nozzles arranged one above the other.

Furthermore, it is preferably provided that each of the blocks comprises at least one integrated control valve, via which the individual spray nozzles and/or groups of spray nozzles can be individually controlled.

Preferably, each of the blocks has at least one connection hole for receiving a fastening element on its contact surfaces directed towards the neighboring blocks.

In order to arrange and fix the spray bar on the roll stand, the two outer connection blocks each have at least one connecting element for connecting the spray bar in the stand.

In a further aspect, the present invention also relates to the use of the spray bar system according to the invention to form a spray bar for selective cooling and/or lubrication of rolls and/or rolling stock.

Fig. 1

eine Ausführungsvariante eines zentralen Anschlussblocks,

Fig. 2

eine Ausführungsvariante eines zentralen Erweiterungsblocks,

Fig. 3

eine Ausführungsvariante eines äußeren Erweiterungsblocks,

Fig. 4

eine Ausführungsvariante eines äußeren Anschlussblocks, und

Fig. 5

eine Ausführungsvariante eines aus den Blöcken zusammengesetzten Spritzbalkens.

The invention and the technical environment are explained in more detail below using the figures. It should be noted that the invention is not intended to be limited by the exemplary embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and findings from the present description and/or figures. In particular, it should be noted that the figures and in particular the size relationships shown are only schematic. The same reference numbers designate the same objects, so that explanations from other figures can be used in addition if necessary. Show it:

Fig. 1

an embodiment variant of a central connection block,

Fig. 2

an embodiment variant of a central expansion block,

Fig. 3

an embodiment variant of an outer extension block,

Fig. 4

an embodiment variant of an external connection block, and

Fig. 5

an embodiment variant of a spray bar composed of the blocks.

In Figure 1 an embodiment variant of a central connection block 1 for a modular spray bar system 2 is shown, which is intended for selective cooling and/or lubrication of rollers (not shown). The central connection block 1 is essentially designed in the form of a cuboid building block in order to enable individual and modular assembly. This and each of the other blocks can consist of metallic and/or non-metallic materials.

In the embodiment variant shown here, the central connection block 1 comprises a fluid connection 3 on the back, which opens into a first main bore 4. Parallel to the first main bore 4, the central connection block 1 includes a second main bore 5, which has a larger cross section. Both main bores 4, 5 extend along the spray bar axis and each form part of the media supply to the respective spray nozzles (not shown). As further shown in the illustration in Figure 1 As can be seen, the central connection block 1 has four transverse bores 6, 7, 8, 9, the first two transverse bores 6, 7 extending transversely from the first main bore 4 and the two second transverse bores 8, 9 extending transversely from the second main bore 5 and in a first and second respectively Fluid outlet openings 10, 11, 12, 13 open, which are arranged on the front of the connection block 1.

Furthermore, the central connection block 1 includes two nozzle plates 14, 15, which are screwed to the front of the connection block 1. Each of the nozzle plates 14, 15 is provided with two openings 16, 17, 18, 19, which are aligned with the respective fluid outlet openings 10, 11, 12, 13 and are intended to receive spray nozzles (not shown).

In Figure 2 an embodiment variant of a central expansion block 20 is shown, which can be connected to the central connection block 1. The central extension block 20 also has a first main bore 21 extending in the direction of the spray bar axis and a second main bore 22 arranged parallel thereto, each of which forms part of the media supply to the spray nozzles. On the front, the central extension block 20 includes a first and a second transverse bore 23, 24, which each extend transversely from the first main bore 21 and the second main bore 22 and each open into a first and a second fluid outlet opening 25, 26, which are on the front of the central Extension blocks 20 are arranged. In contrast to the connection block 1, the extension block 20 includes a nozzle plate 27, which is also attached to the front of the central extension block 20 via screw connections (not shown). Since all nozzle plates of the spray bar system 2 are designed the same, the nozzle plate 27 also has two openings 28, 29 which are aligned with the respective fluid outlet openings 25, 26.

In Figure 3 an embodiment variant of an outer expansion block 30 is shown, which can be connected to the central expansion block 20. Like the central extension block 20, the outer extension block 30 also has a first main bore 31 extending in the direction of the spray bar axis and a second main bore 32, each of which forms part of the media supply to the spray nozzles. On the front, the outer extension block 30 includes a first and a second transverse bore 31, 32, each of which is transverse to the first main bore 31 and the second main bore 32 and each open into a first and a second fluid outlet opening 35, 36, which are arranged on the front of the outer extension block 30. On the front, the outer extension block 30 includes a nozzle plate 37 with two openings 38, 39 which are aligned with the respective fluid outlet openings 35, 36.

In Figure 4 an embodiment variant of an outer connection block 43 is shown, which can be connected to the outer extension blocks 33 to form the modular spray bar system 2 and forms distal end elements of the spray bar 22. The outer connection block 43 has two fluid connections 44, 45 on the back, which open into a main bore 46 and a secondary bore 47, respectively. The two bores 46, 47 each form a final part of the channel for the media supply to the spray nozzles of the spray bar 22 and are therefore closed on one side. In contrast to the blocks 1, 23, 33, the outer connection block 43 in the embodiment variant shown here has no transverse bores and no nozzle plate. Furthermore, the outer connection block 43 includes a fastening element which is used to fasten the spray bar 22 in a framework (not shown).

In Figure 4 an embodiment variant of an outer connection block 40 is shown, which can be connected to the outer extension blocks 30 to form the modular spray bar system 2 and forms distal end elements of the spray bar. The outer connection block 40 has a second and a third fluid connection 41, 42 on the back, the second fluid connection 41 opening into a first main bore 43 and the third fluid connection 42 opening into a second main bore 44. The two main bores 43, 44 each form a final part of a first or a second main fluid channel 45, 46 of the spray bar and are therefore closed on one side. In contrast to the blocks 1, 20, 30, the outer connection block 40 in the embodiment variant shown here has no transverse bores and no nozzle plate. Furthermore, the outer connection block 40 comprises a connecting element 47, which is used to fasten the spray bar in a framework (not shown).

In Figure 5 an embodiment variant of a spray bar 47 composed of the blocks 1, 20, 30, 40 is shown, which are clamped together in a fluid-tight manner via one or more bracing elements (not shown). The number of central and outer extension blocks 20, 30 shown here refers to those in Figure 5 shown embodiment variant and can vary depending on the desired width of the rolling stock. As can be seen from the illustration, the spray bar 47 comprises a central connection block 1, three central extension blocks 20 arranged on both sides of the connection block 1, followed by three outer extension blocks 30 arranged on both sides of the central extension blocks 20, and one each on the two distal ends of the spray bar 47 arranged outer connection block 40.

The main advantage of the modular spray bar system 2 according to the invention is that it provides a solution tailored to the respective requirements of the rolling stand and/or changing rolling task. As in Figure 5 shown, the respective blocks 1, 20, 30, 40 can be individually assembled to form the spray bar 47. Due to the only four different types of blocks 1, 20, 30, 40, system 2 can also be produced particularly cost-effectively and does not require the respective customer to keep reserve parts, so that additional storage costs can be saved. Furthermore, the system 2 allows rapid maintenance in the event of wear, in that the respective blocks 1, 20, 30, 40 can be replaced without the entire spray bar 47 having to be laboriously removed. The main advantage of the structure described here is that in the event of wear, the entire spray bar does not have to be remanufactured, but only the affected components. Another advantage is that, depending on the rolling task, a spray bar can be assembled from prefabricated modules.

Reference symbol list

1

central connection block

2

Spray bar system

3

first fluid connection

4

first main drilling

5

main bore

6

first cross hole

7

first cross hole

8th

second cross hole

9

second cross hole

10

first fluid outlet opening

11

first fluid outlet opening

12

second fluid outlet opening

13

second fluid outlet opening

14

nozzle plate

15

nozzle plate

16

opening

17

opening

18

opening

19

opening

20

central extension block

21

first main drilling

22

second main hole

23

first cross hole

24

second cross hole

25

first fluid outlet opening

26

second fluid outlet opening

27

nozzle plate

28

opening

29

opening

30

outer extension block

31

first main drilling

32

second main hole

33

first cross hole

34

second cross hole

35

first fluid outlet opening

36

second fluid outlet opening

37

nozzle plate

38

opening

39

opening

40

external connection block

41

second fluid connection

42

third fluid connection

43

first main drilling

44

second main hole

45

first main fluid channel

46

second main fluid channel

47

Spray bar

Claims (10)

1. Modular spray bar system (2) for selective cooling and/or lubrication of rolls and/or rolling material, comprising at least one central connection block (1) with at least one first fluid connection (3) opening into a first main bore (4), which extends in the direction of a spray bar axis and which forms a part of a first main fluid channel (45) of a spray bar (47), as well as at least one first transverse bore (6) extending transversely of the first main bore (4) and opening into a first fluid outlet opening (10, 11);

   at least two central expansion blocks (20) connectible with the central connecting block (1), wherein each of the central expansion blocks (20) comprises a first main bore (21), which extends in the direction of the spray bar axis and which forms a part of the first main fluid channel (45) of the spray bar (47), as well as at least one first transverse bore (23), which extends transversely of the first main bore (21) and opens into a first fluid outlet opening (25);

   at least two outer expansion blocks (30) connectible with the central expansion blocks (20), wherein each of the outer expansion blocks (30) comprises a first main bore (31), which extends in the direction of the spray bar axis and which forms a part of the first main fluid channel (45) of the spray bar (47), as well as at least one first transverse bore (33) extending transversely of the first main bore (31) and opening into a first fluid outlet opening (35);

   at least two outer connection blocks (40), which are connectible with the outer expansion blocks (30), each with at least one respective second fluid connection (41) opening into a first main bore (43), which extends in the direction of the spray bar axis and is closed at one end and which forms an end part of the first main fluid channel (45) of the spray bar (47); and

   at least one clamping element by means of which the spray bar (47) formed from the different blocks can be clamped.
2. Modular spray bar system (2) according to claim 1, wherein each of the blocks comprises a second main bore (5, 22, 32, 44), which extends parallel to the first main bore (4, 21, 31, 43) and forms a part of a second main fluid channel (46) of the spray bar (47).
3. Modular spray bar system (2) according to claim 2, wherein each of the blocks selected from the row of central connection block (1), central expansion block (20) and outer expansion block (30) has a second transverse bore (8,9, 24, 34) extending transversely of the respective second main bore (5, 22, 32) and opening into a second fluid outlet opening (12, 13, 26, 36).
4. Modular spray bar system (2) according to claim 2 or 3, wherein each of the outer connection blocks (40) comprises at least one respective third fluid connection (42) opening into the second main bore (44).
5. Modular spray bar system (2) according to claim 4, wherein the second main bore (44) of each of the outer connection blocks (40) is closed at one end.
6. Modular spray bar system (2) according to any one of the preceding claims 2 to 5, wherein the second main fluid channel (46) has a cross-section larger with respect to the first main fluid channel (45).
7. Modular spray bar system (2) according to any one of the preceding claims, wherein each of the blocks (1, 20, 30) comprises at least one nozzle plate (15, 27, 37) for mounting spray nozzles.
8. Modular spray bar system (2) according to any one of the preceding claims, wherein each of the blocks (1, 20, 30) comprises at least one integrated control valve by way of which individual and/or groups of spray nozzles are activatable.
9. Modular spray bar system (2) according to any one of the preceding claims, wherein each of the blocks (1, 20, 30, 40) has at the contact surfaces thereof directed towards the adjacent blocks at least one connection bore for mounting of a fastening element.
10. Modular spray bar system (2) according to any one of the preceding claims, wherein the two outer connection blocks (40) each comprise at least one respective connecting element which is arranged for connection of the spray bar (47) in a stand.

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