DE9415739U1 - Flue pipe column with pipe socket - Google Patents

Description

Patent attorneys Tergau & Pohl, Nuremberg * &iacgr;! &Idigr; I .. · 6elte4 ·,

2 Description

6 Smoke pipe column with pipe socket

s The invention relates to a smoke pipe column with the features of the upper

9 scope of claim 1.

11 Such a smoke tube column is known from EP 0 424 617 A2. There,

12 several ceramic smoke pipes are placed on top of each other and thus form a smoke pipe column. Two adjacent smoke pipes are connected to each other in a gas-tight manner by a pipe sleeve. The pipe sleeve is formed in one piece onto the pipe end of a first smoke pipe that acts as the sleeve end. It is curved outwards in an arc compared to the sleeve end of the first pipe.

&eegr; and protrudes the first pipe in the axial direction. In the assembled state of the smoke

18 pipe column, the pipe sleeve encloses the pipe end of the above arranged

19 second smoke pipe. The second pipe is connected to a so-called

μ plug-in effective pipe end inserted into the pipe socket of the first pipe.

21 The two smoke pipes joined together in this way are placed in the socket

22 fen area are cemented, glued or otherwise sealed together.

23 added.

25 The disadvantage of the previously known pipe socket is that the second pipe

26 and after the insertion process, large mechanical stresses on the

27 Transition area between the socket end of the primary pipe and the

28 formed pipe socket. These stresses are essentially radial

29 outwards and can burst the transition area between the first pipe so and the pipe socket. The breaking apart of the pipe socket and the

The first pipe is all the more likely as the smoke pipes are isostatically made of relatively

32 dry clay material and the density and strength of the

33 smoke pipes is therefore very limited from the outset. The low strength

34 of the pipe socket has a large reject rate of the smoke pipes already during

35 during assembly. This makes the assembly of the smoke pipe column very time-consuming and costly. Due to the large radial stresses, 37 the material quickly becomes fatigued and the pipe socket breaks. This

28 September 1994

Patent attorneys Tergau & Pohl, Nuremberg * :: . ^ . j·..j. 6eitjg,j.

&igr; leads to undesirable thermal bridges between the smoke pipe column and the

2 Outside space. In addition, the mechanical stability of the column is at risk.

4 On the one hand, the strength of the smoke pipes is due to their isostatic production

5 positionally strongly limited, on the other hand, the smoke pipes are also subjected to strong stress during &bgr; transport. In order to reduce the transport-related reject rate of the

7 To keep the smoke pipes low, the smoke pipes must be designed as relatively

8 small length sections of the smoke pipe column - e.g. with a length of

s 1.33 m - can be manufactured. The assembled smoke pipe column therefore has

10 many butt joints and pipe sockets with correspondingly many leakage possibilities

11 and risk of breakage. Proper exhaust gas routing of the smoke

12 tube column is therefore not guaranteed.

14 The invention is based on the object of providing a smoke tube column of the type

is to be constructed cost-effectively and to be secured in a safety-related manner.

16 improve.

is This object is achieved with the feature combination of claim 1. The

The solution is to produce the smoke pipe using the extrusion process

20. The pipe material is practically the same. Extrusion

21 follows in a more liquid state of the clay material, as

22 it is present in the known isostatic production method. Due to the

23 In a more liquid state of aggregation, the extrusion process is

24 Pipe material is pressed through the mouthpiece of the extrusion die and receives

25 This results in a high material density. The walls of the smoke

26 pipes and smaller air spaces in volume. The increased

27 Density of the smoke pipe material and the associated increased strength

28 reduces the risk of cracking and breaking the smoke pipe. Therefore,

29 Loss of transport safety even with longer - e.g. 1.50 m - smoke pipes

30. Consequently, the assembly time of the smoke column is shorter.

31 Longer pipe lengths also reduce storage and logistics costs.

33 The number of butt joints and socket areas is reduced. This means that the

34 Need for high-quality and therefore expensive fasteners and sealants

35 is also reduced. The assembly time for cementing or other

the sealing connection of the joint areas of all adjacent smoke

37 pipes is shorter. The smaller number of seams reduces

38 the risk of leakage and breakage in the smoke tube column. The inventive

28 September 19B4

Patent attorneys Tergau & Pohl, Nuremberg

&igr; Column therefore also offers greater security for a FU or over-

2 pressure chimney.

4 The high strength of the smoke pipe according to the invention also reduces

5 their reject rate during assembly and fatigue phenomena β of the smoke tube material during the operating life of the column.

8 The extruded smoke pipe also withstands burning temperatures of 800° and test

9 temperatures up to 1000°. Due to its extrusion manufacturing method,

10 the smoke pipe has a uniform cross-sectional shape over its entire length.

11 The cross-section is, for example, rectangular, in particular square or

12 circular.

&eegr; The uniform cross-sectional shape of the smoke pipes makes it possible for the is first pipe to be simply inserted into a i pipe socket designed as a separate component in the same way as the second pipe. As a result, the &igr;? socket end of the first pipe also functions as a plug end. As a separate is component, the pipe socket, when designed accordingly, avoids the strength deficits mentioned at the beginning of a one-piece pipe socket in the

20 arched transition area between pipe socket and smoke pipe. The sta-

21 tic compressive stresses are generally the case with a separate pipe socket

22 less. In the transition area between the pipe socket and the adjacent

23 smoke pipes, the radial stresses are reduced. The separate pipe socket

24 therefore supports the safe and flawless functioning of the

25 smoke pipe column.

27 The separate pipe sleeve is glued or puttyed onto the smoke pipes

28 or shrunk during the firing process.

so The smoke tube column according to the invention contains due to the separate

si pipe sockets more modular functional units than the previously known

32 smoke pipe column. This is also very advantageous because if there is damage

33 or destruction of a component, e.g. during assembly, only the relevant

34 component itself must be replaced. If the component is damaged,

35 Pipe socket only replaces the pipe socket itself, while the smoke pipe can be used instead. This also contributes to the cost-effective installation of the 37 smoke pipe column.

28 September 1894

Patent attorneys Tergau & Pohl, Nuremberg * J J ! J ♦ · · Page 4 ■

&igr; Claim 2 takes into account deviations of the column course compared to a

2 columns running exactly vertically. With the separate sleeve, this is

3 technically simple. The offset of two adjacent smoke pipes is

4 simply by a corresponding design of the pipe socket. For example, it is conceivable that the bends between two opposing

&bgr; angled smoke pipes effective pipe sleeve an arched course

7. Due to its separate production, the pipe socket can be individually

8 different required directional guides between two opposing

9 of the offset smoke pipes. In general, this

10 Pipe sleeve as coupling part at offset points of the smoke pipe column.

12 The positive engagement between the smoke pipes and the pipe socket according to

13 Claim 3 reduces the need for additional connecting and sealing

14 ing agents in the joint area of two adjacent smoke pipes. In addition, the pipe sleeve acts as a centering aid when placing the individual

The smoke pipes. This further simplifies the installation of the smoke pipe column.

18 According to claim 4, several supports are provided which are attached to the inner wall

is of the socket shell and extend radially inwards towards the

20 column longitudinal axis. With the help of these supports, the pipe socket can be

21 on the first pipe. The support is then placed on the

22 The plug end of the second pipe is placed on top. The supports therefore fix the pipe

23 socket and the smoke pipes in their respective positions without additional

24 Fasteners. Accidental displacement of the components is avoided.

25 den. The pipe socket is with its supports between adjacent smoke pipes

26 ren are in a sense trapped and thus also protected against a possible

27 rotation around the column’s longitudinal axis. In extreme cases, two

28 opposite supports in the same radial plane are sufficient to

29 adjacent smoke pipes and the pipe socket between them

30 to be mechanically and stably fixed together.

32 If the pipe socket is used as a bend or offset point between two adjacent

33 smoke pipes, the pipe sleeve preferably contains several

34 supports in two different, correspondingly offset radial planes. The

35 supports of one radial plane are placed on the first pipe, while the plug end of the second pipe in the assembled state rests on the supports of the

37 second radial plane. In this way, the assembly of the smoke

38 pipe column, even with offset smoke pipes.

28.September 1S84 *··&idigr;l'l* I "*.

Patent attorneys Tergau & Pohl, Nuremberg * &Idigr; i t &Idigr;♦ J J Page &iacgr;> ·

2 According to claim 5, the supports are not located in the areas occupied by the smoke pipes.

3 bounded column cavity. The supports therefore do not hinder

4 the flue gas extraction.

&bgr; According to claim 6, the supports divide the pipe socket in the axial direction into two

7 halves. With regard to this division plane, the pipe socket is therefore symmetrical.

8 Irish design. This allows the pipe socket to be manufactured with simple construction

9 ing forms. The pipe socket surrounds the plug ends.

10 adjacent smoke pipes evenly and therefore seals the butt joint area

11 between two adjacent smoke pipes in the axial direction.

is Claim 7 proposes instead of several, in the same radial plane lying

&eegr; support a self-contained socket collar. The pipe socket and the

15 adjacent smoke pipes are inserted into each other absolutely securely,

ie The self-contained socket collar improves the centering effect of the

&eegr; Pipe sleeve, further simplifies the installation of the smoke pipe column and

18 improves the inherent stability of the pipe socket.

20 Claim 8 contributes to the further mechanical stabilisation of the pipe socket.

21 The one-piece pipe socket can improve existing radial stresses

Record 22.

24 According to claim 9, the pipe socket is made of the same material as the

25 smoke pipes are manufactured. This creates a

26 column a uniform temperature-related expansion behavior. The

27 The same expansion behaviour in turn avoids additional radial chipping

28 connections between the pipe socket and the plug ends of the smoke pipes. The

29 Socket areas are therefore protected even in extreme temperature differences

30 is not additionally stressed, so that the risk of leakage in the

31 smoke pipe column is further reduced.

33 According to claim 10, the smoke tube column is constructed to be mechanically stable.

34 Suitable fasteners for firmly connecting the pipe socket with the

35 Smoke pipes can also have a good sealing effect in a dual function.

28 September 1994

Patent attorneys Tergau & Pohl, Nuremberg

&igr; The subject matter of the invention is illustrated in the figures.

2 examples are explained in more detail.

4 Show:

β Fig.1 the section of a smoke tube column according to the invention, partially

6 cut,

7 Fig.2 the top view of the smoke tube column according to the arrow direction Il β in Fig.1,

a Fig.3 the top view of the pipe sleeve according to the invention according to Fig.2, each

10 but without the smoke pipe inserted,

11 Fig.4 the sectioned front view of the pipe socket according to the

12 Section line IV-IV in Fig.3.

14 Two adjacent smoke pipes, a first pipe 1 and a second pipe 2 are arranged in axial

15 direction 3 of the smoke pipe column 4 (Fig.1). The two in

The axial direction 3 facing pipe ends, i.e. the plug ends 5,6 of the

&eegr; both smoke pipes 1,2 are inserted into a pipe socket 7. During the

When mounting the smoke pipe column 4, the pipe sleeve 7 is placed on the plug end 5 of the

19 of the first pipe 1. The second pipe 2 is inserted with its plug end 6 into the

The pipe sleeve 7 thus fitted is inserted.

22 Along the axial direction 3, the smoke pipes 1,2 have a constant,

23 Column cavity 8 limiting internal cross-section and a constant external

24 external cross-section. Regarding the columns running in axial direction 3

25 longitudinal axis 9, the smoke pipes 1,2 and the pipe socket 7 are axially symmetrical

26 designed.

28 The pipe socket 7 encompasses with its socket casing 10 the two plug ends 5,6

29 (Fig.1,2). The gap between the sleeve casing 10 and the

The joint 11 (Fig.2) formed by the plug ends 5,6 is, if necessary, filled with putty, a

si glue or another connecting and/or sealing agent.

32 This ensures that the smoke pipes 1,2 are tightly connected to each other.

34 The pipe socket 7 is rectangular in cross-section, but the corner areas are

35 quarter-circle rounded (Fig.2,3).

37 On the inner wall of the socket casing 10 facing the smoke pipes 1,2

38, a socket collar 12 is integrally formed. It is in the circumferential direction of the

23 September 1994

Patent attorneys Tergau & Pohl, Nuremberg * &iacgr;&idigr;;.·&idiagr;..&iacgr;«

&igr; Pipe socket 7 closed in itself (Fig.3) and halves the pipe socket 7 in

&zgr; Axial direction 3. The sleeve collar 12 extends radially inwards in the direction

3 direction of the column longitudinal axis 9, but is aligned in the axial direction 3 with the

4 smoke pipes 1,2 (Fig.1). The socket collar 12 forms together with the socket

5 furnace casing 10 has the cross-sectional shape of a T (Fig.1,4), whereby the socket collar β 12 is the vertical beam of the T-shape. With its socket collar 12, the pipe socket 7 is, so to speak, between the plug ends 5,6 of the smoke pipes 1,2

&bgr; clamped. The pipe socket 7 can no longer be moved and has

&bgr; thereby simultaneously serving as a joining aid when placing the

io smoke pipes.

12 The space between the socket collar 12 and the two smoke pipes 1,2

13 formed butt joint 13 (Fig.1) can be in the same way as the joints 11 with a

14 a connecting and/or sealing agent.

28 September 1994

Patent attorneys Tergau & Pohl, Nuremberg

List of reference symbols

1 First pipe 2 Second pipe 3 Axial direction 4 Smoke pipe column 5 Plug end 6 Plug end 7 Pipe socket 8th Column cavity 9 Column longitudinal axis 10 Socket jacket 11 Gap 12 Socket collar 13 Butt joint

28 September 1034

Claims (1)

Patent Attorneys Tergau & Pohl, Nuremberg .·*.·". ·**··**«Page*f. · &igr; 94715-8/37/42 3 28 September 1994 6 Claims 9 1. Smoke pipe column (4) for a chimney 10 - with several in the axial direction (3) of the column (4) placed on top of each other 11 smoke pipes (1,2) made of ceramic material and 12 - with a pipe socket (7) for the tight connection of adjacent smoke pipes, 13 of a first pipe (1) and a second pipe (6), &igr;* wherein the pipe socket (7) is - the butt joint (13) between the first pipe (1) and the second pipe (2) is bridged at the socket end of the first pipe (1) is attached and 17 - the plug end (6) of the second pipe (2) is characterized by ig - that the smoke pipes (1,2) are extruded with a constant cross-section 20 cut are made and 21 - that the pipe socket (7) is designed as a separate component and also the 22 also forms a socket end (5) of the first pipe (1) ₂ 3 summarizes. 25 2. Smoke tube column according to claim 1, 26 characterized by 27 that adjacent smoke pipes (1,2) are angled to each other in the axial direction (3). 28 other, whereby the pipe socket (7) forms the bend between adjacent 29 bearded smoke pipes (1,2). 31 3. Pipe sleeve for the smoke pipe column according to claim 1 or 2, 32 characterized by 33 that it covers the socket ends (5,6) and the butt joint with its socket casing (10) 34 (13) approximately form-fitting. se 4. Pipe socket according to one of claims 1-3, 28 September 1994 (N:\AN\94715.TXT) Patent Attorneys Tergau & Pohl, Nuremberg ."..**. ;**;;": ^Be *? ^# % \ &igr; characterized by 2 that on the inner wall of the socket casing (10) in the same radial plane 3 several supports are formed on the column longitudinal axis (9), 4 - which in the assembled state of the column (4) on the plug end (5) of the first 5 pipe (1), and/or &bgr; - on which, in the assembled state of the column (4), the plug end (6) of the 7 Second pipe (2). 9 5. Pipe socket according to claim 4, 10 characterized by 11 that the supports in axial direction (3) with the inner wall of the smoke pipes (1,2) 12 cursed. 14 6. Pipe socket according to claim 4 or 5, is characterized by ie that the supports in a the pipe socket (7) in axial direction (3) in two halves 17 dividing radial plane. ig 7. Pipe socket according to one of claims 4-6, 20 characterized by 21 that the supports are components of a circumferentially arranged 22 (10) self-contained socket collar (12). 24 8. Pipe sleeve according to one of the preceding claims, 25 characterized by 26 that it is manufactured in one piece. 28 9. Pipe sleeve according to one of the preceding claims, 29 characterized in that it is made of ceramic. 32 10. Pipe sleeve according to one of the preceding claims, 33 characterized by 34 that they are firmly connected to the smoke pipes (1,2) in the assembled state, e.g. 35 is cemented. September 23, 1994(&Ngr;&Lgr;&Agr;&Mgr;94715.&Tgr;&KHgr;&Ggr;) *··! !··· · ***. .* *. *..i