EP3128280B1 - Device for applying impact forces to a heating surface and method for mounting an anvil - Google Patents

Description

The invention relates to a device for introducing impact forces into a heating surface, comprising a collector and a distributor, for removing deposits on the heating surface with an anvil connected to a collector or distributor, on which the impact forces act in order to oscillate the heating surface ,
From the EP 0 716 282 A1 is a steam generator with steam generator heating surfaces, each having a collector and distributor, known. In such steam generators deposits of ash on the heating surfaces lead to a deterioration in the heat transfer from the flue gas to the heat transfer medium. The deposits can - as in the EP 0 716 282 A1 - are cleaned by a mechanical impulse, which is transmitted from a striking element on an anvil connected to the heating surface. Impact mechanisms for exerting a mechanical impulse on heating surfaces are also from the WO 2012/069702 A1 , of the EP 0 254 379 A1 and the US 3,835,817 A known. Another construction for the introduction of a shock pulse in a membrane wall is from the EP 2 452 146 A1 known.
It has been proposed to mount the anvil at the lower end of the heating surface on the Krempenboden of the lower heating surface collector, with Krempenboden is often referred to the welded end element of mostly cylindrical pressure vessels. By a shock pulse in the axial direction of the Heizflächensammlers on the Krempenboden, or the anvil attached there, the entire heating surface is set in vibration, whereby deposits can be effectively eliminated. Due to the high impact forces, accelerations of up to 300 times the gravitational acceleration occur.
For the reasons mentioned above, the anvil must be made of a material that is particularly resistant to mechanical stress and firmly connected to the heating surface. In particular, martensitic materials such as X20CrMoV11-1, which have a particularly high hardness, are used thus resistant to plastic deformation by the impact mechanism.

The particular problem here is the permanent solid connection between the anvil and the heating surface or the Krempenboden on the heating surface. This usually consists of ferritic materials such as e.g. 16Mo3, which are very bad or not weldable with a martensitic material. For the attachment of the anvil therefore an austenitic or ferritic-austenitic intermediate plate of a material is also welded, which is welded to both a ferritic, as well as a martensitic material. It is used, for example, in 10CrMo9-10.

In these complex welded constructions usually a particularly lengthy and expensive and thus expensive heat treatment is necessary to prevent embrittlement of the welds. In operation, this would lead to a very rapid breakage of the welded joint, which could cause the anvil to detach from the heating surface. This creates the risk of damage to the heating surface by a direct impact of the impact element on the then unprotected surface of the Krempenbodens.

If, during operation, the anvil falls off the heating surface, it is particularly difficult to mount a new anvil. Due to the installation situation of the heating surfaces, the space in the region of the anvil is very limited, making the welding of the new anvil and the heat treatment of the new welds are particularly difficult.

It is therefore an object of the present invention to attach an anvil easier and cheaper to the heating surface and at the same time to reduce the risk of separation of anvil and heating surface.

This object is achieved by a device according to the invention for the introduction of impact forces in a heating surface, in which on the front side of the collector or the distributor of the heating surface an intermediate ring for non-positive and / or positive fastening of a mounting portion of the anvil is attached.

Due to the non-positive and / or positive connection between anvil and intermediate ring can be on the intermediate plate of a ferritic-austenitic material - and a cohesive connection of this with the anvil - are omitted and thus the complex heat treatment of the welds superfluous.

In this way, there is a significant reduction in assembly time, which is necessary for the connection of anvil and heating surface. In addition, it is now possible to simply swap the anvil during a revision. Should it be damaged in operation, so the old intermediate ring can be separated and a new intermediate ring welded without further heat treatment. Alternatively, a new intermediate ring could be welded onto the old one.

Preferably, the intermediate ring has a first thread (for example, an internal thread) and the attachment portion of the anvil a second thread (for example, an external thread), which engage in fastening the attachment portion to the intermediate ring. As a result, the fastening section can either be screwed into the intermediate ring or the intermediate ring is screwed into the fastening section.

Preferably, however, the attachment portion of the anvil may also be press-fitted to the intermediate ring to provide a frictional connection.

Furthermore, advantageously, the length of the attachment portion is smaller than the width of the intermediate ring, whereby a gap remains between the collector / distributor side facing the mounting portion and the anvil-facing side of the collector / distributor after assembly of the anvil. Thus, a mechanical relief of Krempenbodens is achieved when hitting the impact mechanism on the anvil. The central area of the brim ground is not loaded by the impact forces, whereby no bending stresses are introduced into the ground. This will be the

Lifespan of the cramp floor increased significantly and the risk of damage in this area significantly reduced

Preferably, the geometry of the brim bottom substantially corresponds to the geometry of the intermediate ring. As a result, the impact is transmitted through the ring in the brim floor. This is mechanically loaded only in the outer area and transfers the force directly into the pipe material of the collector / distributor of the heating surface.

Preferably, the intermediate ring is made of the same ferritic material as the heating surface in order to provide a strong, cohesive connection in the form of a weld during welding, while the anvil itself is made of another, preferably martensitic material with higher hardness than the ferritic material since this is exposed to the loads of the impact mechanism.

Furthermore, advantageously, the header / manifold is substantially in the shape of a cylinder, with the rotational symmetry axis of the intermediate ring being equal to the rotational symmetry axis of the header / manifold to provide directional introduction of the impact forces into the header / manifold tubing.

Advantageously, a bore is provided through the intermediate ring and into the attachment portion of the anvil, in which a locking pin is hammered in the mounted state of the anvil to additionally secure the anvil against waste.

The head portion of the anvil, which absorbs the impact force can be made except in the form of a circle also as a hexagon or generally as a polygon to allow the attachment of a large wrench directly to the anvil.

It is advantageous to equip the anvil with one or more tool receivers extending radially outwards in order to be able to attach a tool when mounting the anvil and intermediate ring. In this case, a pressure equalization bore is advantageously provided on the anvil, extending from the bottom of the Anvil extends to one of the tool holders. This hole allows a pressure equalization of the area between the brim floor and intermediate ring to the environment.

• Anbringen eines Zwischenrings an der Stirnseite des Sammlers/Verteilers;
• formschlüssiges und/oder kraftschlüssiges Montieren eines Befestigungsabschnittes des Ambosses am Zwischenring.

The invention further relates to a method for mounting an anvil for the introduction of impact forces into a heating surface at a collector or distributor of the heating surface, the method comprising the following steps:

• Attaching an intermediate ring on the front side of the collector / distributor;
• positive and / or non-positive mounting a mounting portion of the anvil on the intermediate ring.

Further advantageous embodiments of the invention are defined in subclaims.

Fig. 1

zeigt eine explodierte Seitenansicht eines Abschnitts einer Heizfläche zusammen mit der erfindungsgemäßen Vorrichtung gemäß einer ersten Ausführungsform, bei der der Amboss in den Zwischenring geschraubt ist;

Fig. 2

zeigt eine perspektivische Ansicht der Ausführungsform gemäß Fig. 1 im an der Heizfläche montierten Zustand;

Fig. 3

zeigt eine explodierte, perspektivische Strichzeichnung der Ausführungsform gemäß Fig. 1 im nicht an der Heizfläche montierten Zustand;

Fig. 3A

zeigt eine Detailansicht eines Ausschnitts des Zwischenrings der Ausführungsform gemäß Fig. 1.

Fig. 4

zeigt eine perspektivische Ansicht der Strichzeichnung gemäß Figur 3.

Fig. 5

zeigt eine vorgeschlagene Verbindung von Amboss mit Heizfläche über eine Schweißkonstruktion mit ferritisch-austenitischer Zwischenplatte.

Fig. 6

zeigt die Krafteinleitung in den Krempenboden der Heizfläche bei montierter Vorrichtung der Ausführungsform gemäß Fig.1, wobei Zwischenring, Sammler und Schweissnaht als Schnitt bzw. Teilschnitt dargestellt sind.

Fig. 7

zeigt eine zweite Ausführungsform der erfindungsgemäßen Vorrichtung, wobei Zwischenring, Sammler und Schweissnaht als Schnitt bzw. Teilschnitt dargestellt sind und der Zwischenring in den Amboss geschraubt ist.

Fig. 8

zeigt eine dritte Ausführungsform der erfindungsgemäßen Vorrichtung, wobei Zwischenring, Sammler und Schweissnaht als Schnitt bzw. Teilschnitt dargestellt sind und der Amboss im Zwischenring mittels Presspassung befestigt ist.

The invention will now be explained with reference to the attached figures:

Fig. 1

shows an exploded side view of a portion of a heating surface together with the device according to the invention according to a first embodiment, in which the anvil is screwed into the intermediate ring;

Fig. 2

shows a perspective view of the embodiment according to Fig. 1 in the mounted on the heating surface state;

Fig. 3

shows an exploded, perspective line drawing of the embodiment according to Fig. 1 in the non-mounted on the heating surface state;

Fig. 3A

shows a detailed view of a section of the intermediate ring of the embodiment according to Fig. 1 ,

Fig. 4

shows a perspective view of the line drawing according to FIG. 3 ,

Fig. 5

shows a proposed connection of anvil with heating surface on a welded construction with ferritic-austenitic intermediate plate.

Fig. 6

shows the introduction of force in the Krempenboden the heating surface with mounted device of the embodiment according to Fig.1 , where intermediate ring, collector and weld are shown as a section or partial section.

Fig. 7

shows a second embodiment of the device according to the invention, wherein intermediate ring, collector and weld are shown as a section or partial section and the intermediate ring is screwed into the anvil.

Fig. 8

shows a third embodiment of the device according to the invention, wherein intermediate ring, collector and weld are shown as a section or partial section and the anvil is secured in the intermediate ring by means of press fit.

In the Figures 1 - 4 1 shows a device 1 for introducing impact forces into a heating surface 2 according to a first embodiment. The device comprises an anvil 3 and an intermediate ring 4. The anvil is preferably made of a martensitic materials such as X20CrMoV11-1 with particular hardness and has at one end a striking plate 5 for absorbing impact forces - generated by a striking mechanism, not shown - on. Impact mechanisms for removing deposits on heating surfaces for steam generators are known to those skilled in the art and are therefore not further discussed here.

The striking plate 5 has according to a preferred embodiment, a circular striking surface and has lateral tool holders 5a. However, according to other embodiments, the striking plate may also be made as a hexagon or generally as a polygon to allow attaching a large jaw key directly to the anvil.

The anvil further has at the opposite end according to the invention with the striking plate 5 integrally formed mounting portion 6 with a first thread (here external thread 6a). The attachment section 6 is preferably cylindrical with a radius smaller than the radius of the striking plate 5.

The intermediate ring 4 is preferably made of the same ferritic material as the heating surface 2, whereby a welding of the intermediate ring 4 to the heating surface 2 without heat treatment is possible, and has an outer radius corresponding to the radius of the striking plate 5. The intermediate ring 4 has a second thread (in this case an internal thread 4b on the inside of the intermediate ring 4) which engages with the first thread on the fastening section 6 for fastening the fastening section 6 of the anvil 3 to the intermediate ring 4 serves. In the in the Figures 1-4 illustrated first embodiment, the anvil 3 is screwed by means of the internal thread 4b and the external thread 6b in the intermediate ring 4c.

The heating surface 2 is a superheater heating surface with reversing collector 7 and another collector / distributor, not shown. The collector 7 is preferably a cylindrical hollow body which is closed at least at one end by a welded-on Krempenboden 8. Although the device 1 according to the invention is described in the following in connection with a collector 7, the device according to the invention can also be used in other heating surfaces with collector / distributor which are to be cleaned by tapping. The heating surface 2 further comprises tubes 10 and 11, which serve for the steam discharge or steam supply to the collector 7, as the arrows in the FIG. 2 demonstrate. The heating surface is preferably made of a ferritic materials such as 16Mo3.

The assembly of the device 1 on the heating surface 2 takes place by welding the intermediate ring 4 to the brim bottom 8 (see weld 9 in FIG Fig. 2 ) and the screwing of the attachment portion 6 of the anvil 3 in the intermediate ring 4. As a result, the anvil 3 is positively connected to the intermediate ring 4.

Preferably, in addition, a firm tightening of the screw with a tightening torque of 400 Nm to 1500 Nm, preferably with 800 Nm, in addition to form the connection positively. The tightening torque is introduced into the anvil 3 by a tool (not shown) mounted in one of the tool holders 5a and the anvil 3 is rotated relative to the intermediate ring 4 until the desired tightening torque is reached.

After the torque is reached, a bore 4a is introduced into the intermediate ring 4 in the radial direction in the intermediate ring 4, which extends through the thread 4b / 6b into the anvil. Subsequently, a locking pin 12 is taken in the hole and welded to the intermediate ring 4 outside. As a result, the loosening of the screw connection of anvil and intermediate ring additionally prevented by the particularly high loads when hitting the impact mechanism.

If the anvil 3 is damaged during operation of the steam generator, the anvil 3 can be separated from the intermediate ring 4 at the next revision standstill. This can be done either by loosening the screw under drilling of the locking pin 12, or by cutting the anvil 3 from the intermediate ring 4. A new intermediate ring 4 can be welded either on the old intermediate ring or on the brim floor 8. If it is mounted on the old intermediate ring, so there is no change in the pressure part of the heating surface 2, which is particularly useful in terms of the elimination of otherwise necessary testing activities on Krempenboden 8.

Another advantage of the solution of the problem of the invention results from the mechanical relief of Krempenbodens 8 upon impact of the impact mechanism on the anvil as it is in connection with the FIGS. 5 and 6 is shown. Fig. 5 first shows the aforementioned, proposed anvil attachment, in which an austenitic or ferritic-austenitic intermediate plate 13 with an anvil plate 14 and a brim bottom 8 of a collector is welded and the welds are then heat-treated consuming. In the embodiment according to the invention, in which the intermediate plate has been replaced by the intermediate ring, the impact force is now transferred via the intermediate ring 4 in the turf bottom 8 (see Fig. 6 ). However, the Krempenboden 8 is mechanically loaded only in the outer region and transmits the force via an annular surface (see arrows 15) directly into the tube material of the collector 7 of the heating surface 2. The central region 16 of the Krempenbodens 8 is not burdened by blows, as to the assembly of the anvil 3 a gap 17 between the Krempenboden 8 facing side of the mounting portion 6 and the anvil 3 facing side of the Krempenbodens 8 remains, whereby no bending stresses in the Krempenboden 8 is introduced. As a result, the life of the Krempenbodens 8 is significantly increased and significantly reduces the risk of damage in this area. From the FIG. 6 it can be seen that the intermediate ring 4 and turf bottom 8 are advantageously chamfered for the welding.

Furthermore, from the FIG. 6 can be seen that vorteihafterweise a pressure compensation hole 3a is provided in the anvil 3, which extends from the bottom of the mounting portion 6 through this and up to one of the tool holders 5a. The bore 3a serves to equalize the pressure of the gap 17 (ie the area between the rim bottom 8 and the intermediate ring 4) to the environment. It is intended to prevent pressure build-up and associated detachment of the intermediate ring during welding and operation.

A second embodiment of the device 1 according to the invention is shown in FIG FIG. 7 shown. The second embodiment is different from the embodiment of FIG FIG. 1 in that the function of the intermediate ring 3 and of the fastening section 6 are interchanged in the attachment of the anvil to the intermediate ring. According to the second embodiment, the attachment portion 6 of the anvil is configured as a ring with internal thread 6c, and the intermediate ring 4 has an external thread 4c. This allows screwing of the intermediate ring 4 in the anvil 3. The dimensions of the intermediate ring is maintained in the second embodiment over the first embodiment, while the striking plate 5 and mounting portion 6 are dimensioned correspondingly larger. In this embodiment, advantageously results in a striking plate 5 with a significantly larger diameter compared to in FIG. 5 Impact of the impact mechanism is thus facilitated (even in the event that the heating surface 2 should be moved or tilted). Otherwise, reference is made to the description of the first embodiment. In this embodiment, a pressure equalization bore 3a can also be provided from the bottom of the anvil 3.

In FIG. 8 is a further, third embodiment shown, in which instead of the screw of intermediate ring 4 and mounting portion 6 a purely non-positive connection is provided as a press fit. For this purpose - instead of the thread according to the first embodiment - an excess at the radius of the mounting portion 6 forming the disc is provided on the attachment portion 6 and the intermediate ring 4 is manufactured with a defined tolerance. It is However, also possible to manufacture the intermediate ring 4 with an undersize and the disc with a defined tolerance. In both cases, the pressing force would be the same. To mount the anvil 3 according to the third embodiment, either the anvil 3 or the intermediate ring 4 is heated or cooled to cause a temperature difference between the anvil 3 and the intermediate ring (4). For heating, for example, a conventional mobile gas burner can be used, with which the intermediate ring 4 is heated to a temperature in the range of 100 ° C - 300 ° C, whereby it expands accordingly. However, the temperature difference could also be done by cooling the anvil 3 in the unassembled state with dry ice. For this purpose, this could be embedded in dry ice and cooled, for example, to about -75 ° C. While the temperature difference exists (ie, the anvil 3 and the intermediate ring 4 have different temperatures), the fastening portions 6 are then inserted into the intermediate ring 4. Finally, the temperature difference between the anvil 3 and intermediate ring 4 is compensated, whereby anvil and intermediate ring are in press fit. Also in this embodiment, a pressure equalization hole 3a can also be provided through the attachment portion 6 to a tool holder 5a.

Although the third embodiment with a press fit for the arrangement according to the first embodiment of Figures 1-4 has been described (ie, in which the fixing portion is inserted into the intermediate ring), according to another embodiment, a press fit for the arrangement according to the second embodiment of FIG. 7 (ie, in the arrangement in which the intermediate ring is inserted into the mounting portion) are provided. For this purpose - instead of the thread according to the second embodiment - either the mounting portion 6 with undersize (and the intermediate ring 4 with a defined tolerance) made or intermediate ring 4 is made with an oversize (and the mounting portion with a defined tolerance). Subsequently, as described above for the third embodiment, the temperature difference is first produced again and then intermediate ring 4 is introduced into the anvil 3. In this case, for example, the intermediate ring 4 can be cooled in the unassembled state and placed in the anvil, in which case - after temperature compensation - the intermediate ring is welded in press fit with the anvil on the Krempenboden 8. Alternatively, first, the intermediate ring 4 in a first step to the Krempenboden 8 are welded, heated in a second step, the anvil 3 with a burner (and thus be stretched) and then placed on the Krempenboden 8 welded intermediate ring 4, wherein after balancing the temperature difference, a drop of the anvil by the clamping force of the press fit is prevented.

As in the first embodiment, in the other embodiments by setting a radial bore 4a through the intermediate ring 4 in the attachment portion 6 into (see FIG. 7 ) or hinein through the mounting portion 6 in the intermediate ring 4 (see FIG. 8 ) and by subsequent insertion of a locking pin 12, a drop of the mounted anvil 3 additionally prevented.

• ∘ Verzicht auf komplizierte Schweißkonstruktion
• ∘ Keine Wärmebehandlung nötig
• ∘ Wesentlich schnellere und damit kostengünstigere Montage der Vorrichtung
• ∘ Einfache Wartung möglich, Re-Montage auf Baustelle schnell und einfach möglich
• ∘ Bei Remontage keine Veränderung am Druckteil der Heizfläche 2 nötig
• ∘ Höhere Lebensdauer als bisherige Befestigungen
• ∘ Die Schlagplatte 5 kann deutlich größer im Durchmesser dimensioniert werden als die Ambossplatte 14. Hierdurch wird das Auftreffen des Schlagmechanismus erleichtert, wenn die Heizfläche 2 verschoben oder verkantet sein sollte.

In summary, the device according to the invention provides the following advantages:

• ∘ Elimination of complicated welded construction
• ∘ No heat treatment necessary
• ∘ Much faster and thus less expensive installation of the device
• ∘ Simple maintenance possible, re-assembly on site quickly and easily possible
• ∘ In the case of remontage, no change to the pressure part of heating surface 2 is necessary
• ∘ Higher service life than previous fixtures
• Schlag The impact plate 5 can be dimensioned significantly larger in diameter than the anvil plate 14. This facilitates the impact of the impact mechanism when the heating surface 2 should be moved or tilted.

• Anbringen des Zwischenrings 4 an der Stirnseite des Sammlers/Verteilers 7 der Heizfläche 2;
• formschlüssiges und/oder kraftschlüssiges Montieren des Befestigungsabschnittes 6 des Ambosses in dem Zwischenring 4, wobei hierzu zum Beispiel entweder ein Einschrauben des mit einem Aussengewinde 6b versehenen Befestigungsabschnittes 6 in den mit einem Innengewinde 4b versehenden Zwischenring 4 oder ein Kühlen des Ambosses 3, Einführen des Befestigungsabschnittes 6 in den Zwischenring 4 im gekühlten Zustand und Erwärmen des Ambosses 3 in Presspassung mit dem Zwischenring 4 durchgeführt wird.
• Setzten der Bohrung 4a durch den Zwischenring und in den Befestigungsabschnitt hinein; und
• Einschlagen des Sicherungsstiftes 12.

In the following, the method according to the invention for mounting the anvil 3 for the introduction of impact forces into the heating surface 2 at the collector or distributor of the heating surface is summarized below:

• Attaching the intermediate ring 4 at the end face of the collector / distributor 7 of the heating surface 2;
• positive and / or non-positive mounting of the mounting portion 6 of the anvil in the intermediate ring 4, for this purpose, for example, either a screwing in with a External thread 6 b provided mounting portion 6 in the provided with an internal thread 4 b intermediate ring 4 or cooling of the anvil 3, insertion of the mounting portion 6 in the intermediate ring 4 in the cooled state and heating of the anvil 3 in interference fit with the intermediate ring 4 is performed.
• Put the bore 4a through the intermediate ring and into the mounting portion; and
• Impacting the locking pin 12.

It will be apparent to those skilled in the art that, although in accordance with a preferred embodiment, the intermediate ring 4 is first welded to the brim bottom 8 and then the anvil 3 is frictionally and / or positively secured to the intermediate ring 4, the order of steps can also be reversed. Thus, for example, first intermediate ring 4 and anvil 3 with each other force and / or positively secured and the intermediate ring can then be welded on its exposed side on Krempenboden 8.

LIST OF REFERENCE NUMBERS

1

contraption

2

heating surface

3

anvil

3a

Pressure compensating bore

4

intermediate ring

4a

drilling

4b

inner thread

4c

external thread

5

impact plate

5a

tool holders

6

attachment section

6b

external thread

6c

inner thread

7

collector

8th

Kremp ground

9

Weld

10.11

Tube

12

safety pin

13

intermediate plate

14

anvil plate

15

force arrows

16

central area of the Krempenbodens

17

gap

Claims (14)

1. Manifold (7) for a heating surface (2) of an anvil (3) for introducing impact forces into the heating surface (2) for removing deposits on the heating surface, wherein the impacts act on the anvil so as to oscillate the heating surface, characterized in that
   an intermediate ring (4) is attached to the front face of the manifold (7) by force-fittingly and/or form-fittingly mounting a mounting portion (6) of the anvil (3),
   the manifold (7) comprises a welded end base (8) at its front face and the intermediate ring (4) is welded to the front face of the end base (8).
2. Manifold (7) according to claim 1, characterized in that the intermediate ring (4) comprises first threads (4b), and the mounting portion (6) comprises second threads (6b), which engage when the mounting portion (6) is attached to the intermediate ring (4).
3. Manifold (7) according to claim 2, characterized in that the intermediate ring (4) comprises female threads (4b) and the mounting portion (6) of the anvil comprises male threads (6b), and the mounting portion (6) is screwed into the intermediate ring (4), or in that the intermediate ring (4) comprises male threads (4c) and the mounting portion (6) of the anvil comprises female threads (6c), and the intermediate ring (4) is screwed into the mounting portion (6).
4. Manifold (7) according to claim 1, characterized in that the mounting portion (6) is attached to the intermediate ring (4) by means of an interference fit.
5. Manifold (7) according to one of the preceding claims, characterized in that the length of the mounting portion (6) is smaller than the width of the intermediate ring (4).
6. Manifold (7) according to one of the preceding claims, characterized in that the geometry of the end base (8) generally corresponds to the geometry of the intermediate ring (4) and/or that the intermediate ring (4) is made of the same ferritic material as the heating surface (2) while the anvil (3) is formed from a different material, preferably a martensitic material, having higher hardness than the ferritic material.
7. Manifold (7) according to one of the preceding claims, characterized in that the manifold (7) generally has the form of a cylinder and the rotational symmetry axis of the intermediate ring (4) is the same as the rotational symmetry axis as the manifold.
8. Manifold (7) according to one of the preceding claims, characterized in that a bore (4a) is provided through the intermediate ring and extending into the mounting portion (6) of the anvil (3), wherein a lock pin (12) is punched into the bore in a mounted condition of the anvil and/or that the anvil (3) comprises one or more tool mounts (5a) extending radially outward, wherein the anvil comprises at least one pressure compensation bore (3a) which extends from the bottom of the anvil (3) to a tool mount (5a).
9. Manifold (7) according to one of the preceding claims, characterized in that the anvil (3) comprises a head portion for receiving the impact force, wherein the head portion is formed as a circle, a hexagon or a polygon.
10. Method for mounting an anvil (3) for introducing impact forces into a heating surface (2) on a manifold (7) of the heating surface, characterized by attaching an intermediate ring (4) to the front face of the manifold (7) wherein the manifold (7) comprises an end base welded to the front face thereof, and wherein an intermediate ring (4) is welded to the front face of the end base (8); and
    mounting a mounting portion (6) of the anvil to the intermediate ring (4) by form-fit and/or force-fit.
11. Method for mounting an anvil (3) according to claim 10, characterized by screwing the mounting portion (6) which comprises male threads (6b) to the intermediate ring (4) which comprises female threads (4b) or screwing the mounting portion (6) which comprises female threads (6c) into the intermediate ring (4) which comprises male threads (4c).
12. Method for mounting an anvil (3) according to claim 10, characterized by heating or cooling either the anvil (3) or the intermediate ring (4) so as to provide a temperature difference between the anvil (3) and the intermediate ring (4);
    inserting the mounting portion (6) into the intermediate ring (4) or inserting the intermediate ring (4) into the mounting portion (6) while the anvil and the intermediate ring have a temperature difference; and
    balancing the temperature difference of the anvil and the intermediate ring as an interference fit.
13. Method for mounting an anvil (3) according to one of claims 10 - 12, wherein, after mounting the mounting portion (6) to the intermediate ring (4), a gap (17) remains between the side of the mounting portion (6) facing the manifold and the side of the anvil (3) facing the manifold, since the length of the mounting portion (6) is smaller than the width of the intermediate ring (4).
14. Method for mounting an anvil (3) according to one of claims 10 - 13, characterized by
    forming a bore (4a) in the intermediate ring (4) and in the mounting portion (6);
    punching a lock pin (12) into the bore (4a).

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