DE29506622U1 - Pipe component for solid material delivery pipes - Google Patents

Description

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O1DTMANN

STUHLMANN · WiLLERT

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^OR83 /36492-001

Your sign

PATENT ATTORNEYS

DR,-1NG, P. H. OIDTMANN* DIPL.-1NG. R. BOCKERMANN* DR.-ING. P. KSOLL DR.-ING. W. STUHLMANN T DiPL.-ING. R. WILLERT

EUROPEAN PATENT ATTORNEYS'

Bergstrasse 159 44791 BOCHUM

PO Box 102450 44724 BOCHUM

18.4.1995 XK/He

Esser-Werke GmbH & Co. KG Belecker Landstr. 107, 59581 Warstein

Pipe component for solids conveying pipes

The invention relates to a pipe component for solids conveying pipes according to the features in the preamble of claim 1 and to a pipe with such a pipe component.

Solids conveying pipes are assembled in sections to form pipe strings in the required lengths in order to transport building materials, concrete, gravel or sand pneumatically or hydraulically, for example. The solids conveying pipes are equipped with coupling flanges at both ends, which are used either in conjunction with coupling clamps or, in the case of coupling flanges with holes, in conjunction with screw bolts to detachably connect the solids conveying pipes that follow one another in the longitudinal direction of a pipe string.

The coupling flanges are part of a pipe component, which is welded to the solids conveying pipes. For this purpose, the pipe component has a weld-on collar.

Telephone (02 34) 5*1*9&dgr;>*5&bgr;&iacgr;'5&dgr;* .'"Tarefaii &Tgr;02 34)&1 _# 05&iacgr;&Igr; 2 . Telex 825361 swop d Commerzbank AG Bochum, Account No. 3&bgr;*64 73&idigr;? (Bl|Z;43pJlb*(|36j.· Postäirols<3nto Essen, Account No. 7447-431 (BLZ 360 100 43)

The pipe component can be attached bluntly to the end of a solids conveying pipe. It is also possible, however, for the weld collar to overlap the end of the solids conveying pipe by a certain amount and then be welded in place (cf. DE-PS 33 24 658).

Solids conveying pipes are available in a wide range of diameters, although the gradation in nominal widths is sometimes very small. It is therefore often not possible to distinguish between the pipes without a measuring tool. This mainly leads to problems when poorly trained and inexperienced personnel are used for loading or assembly. This then leads to confusion when selecting the pipe, which leads to unnecessary downtime and duplicate work processes.

The invention aims to remedy this situation. Based on the state of the art, the invention is based on the task of providing a pipe component that makes it easy to identify the solids conveying pipes in terms of design and nominal diameter.

According to the invention, this problem is solved by the features set out in the characterizing part of claim 1.

The weld collar is then provided with at least one annular groove. Using the groove, it is possible to identify a pipe provided with the pipe component according to the invention with regard to its nominal diameter and its quality or pipe characteristics. At the same time, the groove is an indicator of the origin of the pipe.

In order to ensure that the pipes can be distinguished, it is possible to design the groove in the weld collar with different widths. This means that pipes of different

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Nominal diameters have grooves of different widths. The dimensions of the groove are determined in such a way that the pipes can be distinguished from one another both visually and by feeling with the fingers. It is also conceivable that the grooves have different color markings.

It is also possible to provide the pipe components with a different number of grooves depending on the nominal diameter. The grooves can be very narrow or groove-like.

Additional means for detecting or identifying the pipes or their storage management, for example in the form of a bar code, can be accommodated in the protection of the groove.

The pipe component according to the invention facilitates the correct identification and assignment of a pipe (claim 5). This is advantageous during assembly on site. A measuring tool, for example a caliper, is not required to determine the nominal diameter of the pipes. This simplifies the work processes during assembly.

It must be taken into account that the pipes are sometimes laid in places that are difficult to access or in impassable, dark, dusty premises.

The work processes are also simplified for the staff when it comes to material planning and loading the pipes in the material warehouse. The selection of the pipes and the assembly of a load according to requirements can be carried out using simple specifications. All that is required is to specify how many pipes with which groove should be assembled. There is no need to re-measure the nominal diameter or length.

As a rule, the pipe strings made up of individual pipes are graded, i.e. they have lengths in which pipes of different diameters are installed. When planning such a pipe section, it is important to ensure that the right pipes and also the correct number of pipes are in the right place at the right time. It is now possible to give both the loading personnel and the fitters simple and clear instructions on which pipes and how many of them need to be loaded and where they need to be installed in the pipe string.

According to the features of claim 2, the groove is smaller than the groove formed by the distance between the coupling flange and the weld collar. The coupling flange ensures a secure and tight connection between the individual pipes. The weld collar can have different widths. This can also be used to identify the pipes or to support this.

An embodiment that further develops the general inventive concept is characterized in claim 3, according to which the groove accommodates an elastic ring.

The elastic ring also has an identification function. The rings can be made in different widths and thicknesses, but also in different colors.

The ring also provides shock absorption. During loading and assembly, the pipes are sometimes subjected to heavy loads. However, even small deformations can have a detrimental effect, particularly in the end areas of the pipes. The elastic rings make it possible to cushion harder impacts on the pipe ends.

In addition, the elastic ring can serve as an advertising medium according to the feature in claim 4. The ring then not only has an identification function for the technical characteristics of the pipe component or a pipe. It also functions as an indication of the origin of the manufacturer. This brings with it the additional technical advantage that pipes of the same quality are always installed in a pipe string. This can prevent operational interruptions that result from the failure and replacement of a pipe of inferior quality.

The pipe components are welded to the ends of a pipe. This can be done by placing the pipe component butt-jointed in front of the pipe end. It is also possible to design the pipe component in such a way that it is pushed over the pipe end and secured. The pipe component is then preferably designed in two layers, with an inner sleeve made of a wear- and impact-resistant material.

The invention is described in more detail below with reference to embodiments shown in the drawings. They show:

Figure 1 shows a vertical longitudinal section of the connection area between a pipe component and a double-layer pipe;

Figure 2 shows an enlarged view of section II of Figure 1;

Figure 3 shows a vertical longitudinal section of another embodiment of the connection area between a pipe component and a double-layer pipe;

Figure 4 shows an enlarged view of section IV of Figure 3. ■

In Figure 1, 1 designates a pipe component for a double-layer pipe 2 for transporting solids. The pipe 2 consists of a hardened core pipe 3 and a jacket pipe 4. The pipe part 1 is pushed onto the end 5 of pipe 2 and is flush with the front of pipe 2. The pipe component 1 is attached to the pipe 2 by welding.

The pipe component 1 consists of a sleeve 6, which has a circumferential, radially protruding coupling flange 8 at its end 7 and a circumferential, radial weld collar 10 at the other end 9.

The groove 11 between the coupling flange 8 and the weld collar 10 serves to clamp coupling elements not shown here.

An annular groove 12 is arranged in the outer circumference of the weld collar 10 (see also Figure 2).

The groove 12 in the weld collar 10 enables the clear identification of a pipe in terms of its nominal diameter and design. This means that a fitter can use the groove 10 to determine whether it is, for example, a double-layer or single-layer transport pipe. The groove 10 can also provide an indication of the wall thickness of the pipe 2.

Furthermore, groove 12 also serves as an indication of origin.

The depth T of slot 12 is less than its width B. In the example shown, the depth T is 2 mm and the width B is 5 mm. The radius R is on both sides

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1 mm. The weld collar 10 passes over the inclined surface 13 into the groove 11. ^;

Figure 3 shows a pipe component 14 which is designed in two layers. An inner sleeve 15 with a wall thickness D ₇ which corresponds to the wall thickness D 1_ of the double-layer pipe 16 is made of a hardened carbon steel, while the sleeve 17 is made of a welded steel. The inner diameter of the inner sleeve 15 and the inner diameter of the pipe 16 are matched to one another in such a way that there is no step at the transition from the inner sleeve 15 to the pipe 16.

To secure the pipe component 14 to the pipe 16, a shoulder 19 is formed on the weld-flush end 18. The shoulder 19 is obtained by making the inner sleeve 15 shorter than the sleeve 17. The sleeve 17 then partially overlaps the pipe 16 with its weld collar 20. The pipe component 14 is thus centered on the pipe 16. The weld seam 2 3 can now be placed in the angle area between the outer surface 21 of the pipe 16 and the front side 22 of the sleeve 17.

The groove 25 is provided in the outer circumference 24 of the weld collar 2 0. This accommodates an elastic ring 2 6 (see Figure 4). Information about the manufacturer of the pipe 16 and the pipe characteristics are provided in the surface 27 of the elastic ring 26.

The ring 26 is thicker by the dimension X than the depth T ₁ of the groove 25 and protrudes beyond the outer circumference of the sleeve 17. The ring 26 is thus able to dampen impacts on the pipe component 14 to a certain extent.

Reference symbol list

1 - Pipe component

2 - Pipe

3 - Core tube

4 - Jacket pipe

5 - End of 2

6 - Sleeve

7 - End of '6

8 - Coupling flange

9 - End of 6

10 - Amschwexßbund

11 - Groove

12 - Groove

13 - Inclined surface

14 - Pipe component

15 - Inner sleeve

16 - Pipe

17 - Sleeve

18 - end of 14

19 - Paragraph

2 0 - Weld-on collar

21 - Surface of

22 - Front side of

23 - Weld seam

24 - Outer circumference

25 - Groove

26 - elastic ring

27 - Surface of

T - depth of 12 B - width of 12 R - radius of 12 T ₁ - depth of 25 D - wall thickness of D ₁ - wall thickness of

Claims (5)

Protection claims 1. Pipe component for solids conveying pipes comprising a sleeve (6, 17) which has a circumferential radial coupling flange (8) at one end (7) and a circumferential radial weld collar (10, 20) at its other end (9), characterized in that at least one annular groove (12, 25) is provided in the outer circumference of the weld collar (10, 20). 2. Pipe component according to claim 1, characterized in that the groove (12, 25) is smaller than the groove (11) formed by the distance between the coupling flange (8) and the weld collar (10, 20). 3. Pipe component according to claim 1 or 2, characterized in that the groove (25) accommodates an elastic ring (26). 4. Pipe component according to claim 3, characterized in that the ring (26) is an advertising medium. 5. Pipe with a pipe component according to one of claims 1 to 4. ·