DE1933202U - SEAL, SLIDING PIPE CONNECTION BETWEEN STATIONARY AND ROTATING CONNECTION PIPES OF SOOT BLOW DEVICE IN REGENERATIVE AIR HEATERS. - Google Patents

Description

RA.002 356-U.6

Apparatebau Rothemühle Pat. 653/12 / Et / Cs

Brandt & Kritzler

5961 Rothemühle above. Pipe

Utility model registration

"Sealing sliding pipe connection between stationary and rotating connection lines of the sootblowing device in regenerative air heaters "

The innovation according to the model concerns a sealingly sliding pipe connection between stationary and rotating connection lines of the Sootblower in regenerative air heaters.

Such a blowing device is for example in the regenerative air heater with stationary heating surfaces on the rotating air hoods arranged within the connection channels for the heating gases to the Rotate the end faces of the cylindrical regenerative chamber.

Figures 1 and 2 show schematically and by way of example an embodiment of this blowing device with h blowing nozzles at the outer ends of the radial pipe arms (ί?), Which open like spokes at equal angular intervals into a central supply pipe (8). This feed pipe (8) is rotatably mounted parallel to the regenerator axis on the upper air hood (2). By means of a pin wheel (12) and the plunger (13), which is adjustably mounted on the outer circumference of the regenerator housing (i), the blow nozzles can be adjusted by a small angle with each revolution of the air hood, in order to periodically clean the entire heating surface area.

Figure 1 shows part of the longitudinal section through the regenerative chamber. You can see 1 piece each of the upper regenerator face and the connection of the air hood (2) with its hollow shaft (6). The blowing agent is fed through the hollow shaft and the radial feed line (7) to the tube (8), which is rotatably mounted relative to it. Between the upper end of the rotatable tube (8) and the lower connection cross section

of the pipe bend (7 ^T ), the sealingly sliding pipe connecting element (21) is installed according to the innovation. This connection element within the upper supply channel for the dusty heating gases must ensure a reliably sealing connection under the prevailing operating conditions (especially under very high temperatures). At the same time, it serves the task of absorbing thermal expansion in all spatial directions and creating a sealing, sliding connection between stationary and rotating pipelines.

The structural design of this element according to the model innovation is shown on a larger scale in Figures 3 and k .

It consists of the compensator (22) with inner and outer protective tubes (23 »23 '» 2, k, Zk ¹ ) . The compensator (22) is firmly screwed with its upper connecting flange (25) to the flange (7 ") of the upper pipe bend (7 ') which is arranged at the outer end of the radial feed pipe (7).

The lower compensator flange (26) as well as the upper flange (25) on its outer circumference each 3 claws (27 '27') · - ^ ¹¹ screwed adjustably to the outriggers (27) on the upper flange (25) are spring pins (28) , which are guided axially sliding in the claws (27 ') of the lower flange (26). The spring bolts (28) carry spring plates (29, 29 ') with adjustable compression springs (30).

The lower compensator flange (26) is firmly screwed to the Guide flange (31) of the upper sealing ring (32) by the Pressure springs (30) seal against the lower rotating slide ring (33) is pressed. Both sealing rings (32, 33) are made of very hard steel and ensure high wear resistance the sealing surface.

The lower sealing ring (33) is firmly connected by its connecting flange with the flange (35) ^m the upper end of the rotatable feed pipe (8).

Figure 4 shows a partial plan view of the upper connection flange (7 ") and the compensator flange (25) with the claws (27) for the spring bolts.

+) or other known material with good sliding properties,

The sealingly sliding pipe connection according to this model
The innovation has proven to be reliable under the relatively high gas temperatures of the hot flue gases. The thermal expansions that
With the large regenerator dimensions that are customary today, they also occur to a larger extent, are resiliently accommodated in the direction of the connecting axis of the pipe element as well as in the sealing plane perpendicular thereto. The spring pressure required for this is at
Assembly precisely adjusted.

Claims (1)

: M. (FuZ obfa * - ?, ι.ob J right to protection Sealing sliding pipe connection element between stationary and rotating connection lines of the soot blowing device in one Regenerative air heater, consisting of one known per se Compensator (22) with inner and outer protective tubes (23 »23 '» 24, 24 ') and connecting flanges (25, 26), characterized in that that the connecting flanges (25, 26) are provided with claws (27, 27 ') in which spring bolts (28) are held and guided in an axially sliding manner with spring plates (29, 29 ') and adjustable compression springs (30) the sealing rings (32, 33) inserted in the guide flanges (3I, 34) Press against each other in a sliding manner and thus form a flexible, sealing pipe connection.