FI92759C - Equipment for cleaning the boiler tube wall - Google Patents

Description

92759

Equipment for cleaning boiler pipe walls

The invention relates to an apparatus for cleaning a boiler tube wall welded together from parallel pipes and flat flat plates, which apparatus consists of a drop hammer to be used and an impact guide device mounted on the boiler tube wall.

In the case of the known apparatus 10 of this type (DE-PS 22 40 250), the impact conductor device consists of a single beam fixed to the pipes of the boiler tube wall. In the case of such equipment, a drop hammer has to be used relatively often, to prevent or remove deposits from the boiler tube wall, it is found that the impact conductor or single beam detaches relatively easily from the boiler tube wall due to fracture fractures in the welds.

The object of the invention is to find an impact guide device for equipment of the type described above, which maintains its function with a high impact density of a myOs drop hammer.

The apparatus according to the present invention is mainly characterized in that the impact guide device consists of the free use of a drop hammer and the perpendicular impact force applied at its end face. 25 of an anvil lurking in the boiler tube wall and an anvil supporting hook attached to the boiler tube wall, wherein the anvil is guided perpendicular to the direction of the boiler tube wall and the boiler tube wall is pressed with at least one spring.

The invention is based on the fact that when the impact density of the drop hinge is relatively high, the detachment of the impact guide device from the boiler wall can only be prevented if the impact force provided by the drop hammer is not silenced directly closed, but is above all supported by a chipper movable relative to the boiler tube wall, which in turn is fixed to the boiler tube wall. Tests of use: are: in any case, have shown good adhesion.

There are several possibilities for further embodiments within the scope of the invention. Thus, in one hydraulic embodiment, the end face on the boiler tube wall side of the anvil substantially corresponds to the shape of the boiler tube wall surface 10, to transmit the impact force in a non-point or non-line shape of the possible nozzle, but conforming to the surface of the boiler tube wall. Since, when the anvil is massive, a sufficiently precise design of the end face is only difficult, it is recommended according to the invention that the end face 15 of the anvil be provided with protective shells for the boiler tube wall tubes which can be relatively easily manufactured and replaced. In an advantageous embodiment of this arm, the shells are attached to an arcuate structure loosely attached to the anvil, the shells corresponding to the force of the drop hammer being silenced on the wall only through parts which do not have a welded connection to the pipe wall. Hakki itself is usefully welded to flat silicon wafers and not to pipes. Its structure is particularly simple, but it is still completely satisfactory. The 25th embodiment is characterized in that the chip consists of two U-shaped conductor support arches attached to the anvil in the region of each of its horns. These lead-decanter arches can even be formed from flat irons screwed together. In any case, it is recommended that the anvil be pressed behind each horn by a coil spring supported and supported by a guide support rail. In this connection, it is also advantageous for the front ends of the coil springs to extend into the recesses behind the anvil.

In the following, the invention will be described in more detail by means of a drawing showing an exemplary embodiment.

• * 11 3 92759

Figure 1 is a view of the apparatus,

Figure 2 shows the apparatus of Figure 1 from behind in the direction of arrow A, and

Figure 3 shows the apparatus of Figures 1 and 2, 5 Control of the section in the direction of arrow B.

The apparatus for cleaning the external boiler tube wall 1 shown in the figures, which boiler tube wall 1 is welded to one of the parallel tubes 2 and the flat plates 3 connected to their pile, is composed of The construction and operation of the drop hammer are sufficiently known in the prior art (DE-PS 22 40 250) and do not require a detailed description.

Iskujohdelaite 4 in turn consists of the anvil 5 and håkistå 6, 7. The drop hammer to use the anvil 5 of the va free end 8 kattilaputkiseinaan perpendicular to the direction of arrow A direction. The impact force exerted by the tail is selected through the end face 9 of the lower 20 perpendicular to the boiler tube wall 1. The anvil 5 is attached to a chip 6, 7 fixed to the boiler tube wall 1 and specifically so as to be passed perpendicular to the boiler tube wall 6 and 7. with coil spring 10.

As can be easily seen from Fig. 1, the anvil 5 has an end face 9 formed substantially on the surface of the boiler tube wall on the surface side of the boiler tube wall 9. The end face of the anvil 5 itself is further provided with protective shells 11 which abut the tubes 2 of the boiler tube wall. patch the set arch structure 12, 13. This arch structure 12, 13 consists of two U-shaped arches 12 and 13, which in turn together with the protective shells 11 again form 35 U-shaped components (cf. Fig. 3).

92759 ------ τ— 4 The box 6, 7 is not welded to the pipes 2, but to the flat silicon plates 3 of the boiler-pipe wall 1, which has proved to be useful. In any case, the chip 6, 7 consists of two U-shaped conductor support arches 6 and 5 7 which attach to the anvil 5 in the region of each of the horns 14. These conductor support arches 6, 7 consist of flat irons screwed together; the screw connection allows simple disassembly of the bottom. In any case, the anvil 5 backs from the rear of each of its horns 14 one-to-10 coil spring 10 acting directly on the boiler tube wall 1, supported on the rail 15 of the mounted guide bracket 6 and 7 and held on by the pin 16 with the satin screw 17. The coil springs 10 extend for rear immersions 18.

Claims (9)

An apparatus for cleaning a boiler tube wall welded together from parallel tubes (2) and optional flat silicon plates (3), consisting of a drop hammer used and a drive rod, an impact guide device (4) mounted on the boiler tube wall (1), a sensor (4) (4) consists of an anvil (5) used by a drop hammer and a percussion force (9) perpendicular to its end face (9) perpendicular to the end wall (1) of the impact force applied by the drop hammer and an anvil (5) attached to the boiler tube wall (1). a box (6, 7) in which the anvil (5) is guided perpendicular to the direction of the boiler tube wall (1) and the boiler tube-15 wall (1) is pressed by at least one spring (10). Apparatus according to claim 1, characterized in that the anvil (5) has an end face (9) formed on the side of the boiler tube wall surface, substantially corresponding to the boiler tube wall surface. Apparatus according to Claim 1 or 2, characterized in that the end face (9) of the anvil (5) is provided with protective shells (11) which hit the pipes (2) of the boiler tube wall (1). Apparatus according to Claim 3, characterized in that the protective shells (11) are fastened to an arcuate structure (12, 13) which is perfectly positioned on the anvil (5). Apparatus according to one of Claims 1 to 4, characterized in that the chip (6, 7) is welded to the flat silicon plates (3). 5 92759 Apparatus according to one of Claims 1 to 5, characterized in that the chip (6, 7) consists of two U-shaped conductor support arches 35 (6, 7) which engage the anvil (5) in the region of each of its horns (14). 92759 ---- τ— 6 Apparatus according to one of Claims 1 to 6, characterized in that the conductor support arches (6, 7) consist of flat irons screwed to one another. Apparatus according to one of Claims 1 to 7, characterized in that the anvil (5) is pressed, on the rear side of each of its horns (14), by one helical spring (10) which is supported and supported by a corresponding guide support arm (6, 7). rail (15). Apparatus according to claim 8, characterized in that the coil springs (10) extend from their front end to the rear recesses (18) of the anvil (5). 7 92759