Translation of "Drain point" in German

This forms a drain point 14a.

Effective cleaning from the high point to the low-point drain is thereby ensured.

Technical details such as e.g. drain pipework for point drainage and linear drainage are also dealt with.

The lowermost point of the annular bead 14 around the outlet 12, or in other words the drain point 14a from the secondary chamber 4, is located at a position that is spaced apart from the flue gas vent opening 16 by the maximum distance.

Liquid ash A that flows downward along the walls of the secondary chamber 4 initially collects in the channel 13 and then spills over the bead 14 at its lowermost point, namely at the drain point 14a.

Another possibility, currently regarded as particularly advantageous, for guiding the camera probe into the subsidiary canal branching off from the main drain consists in holding a deflecting frame in position in the main drain at the point where the subsidiary canal branches off, which guides the camera into the subsidiary canal.

The condensation causes the metal to heat up and the condensation point shifts from the injection point toward the low-point drain.

This increases the stability, durability and reliability of the waterproofing in the area of the drain point, even in the case of temperature-related screed movement.

Because at least one low-point drain remains open in the part requiring to be cleaned, with steam continuing to be injected until steam emerges from the low-point drain, it is ensured that the entire system, from the high point to the low-point drain, has come into contact with a volume of steam that is sufficient for cleaning purposes.

When steam emerges from the low-point drain it can be assumed that the flushing of the system has been completed, at least in the region of said low-point drain.

The steam injection means is then closed and all low-point drains 17 are reopened.

When the cleaning solution is drained off from the system and steam is injected immediately after or during the draining operation, with the low-point drains remaining open, the inflowing steam condenses on the metal surfaces and the condensate formed is discharged by way of the drain.

As soon as the cleaning solution is drained off by way of the low-point drains 17, steam can be conducted into the drum 14 by way of the auxiliary steam line 19 for post-flushing purposes.

The steam condenses on the metal surfaces of drum 14, evaporator 15, condensate preheater 13, superheater 16 and the lines connecting them, and the condensate formed is discharged by way of the low-point drains 17 .

As the time during which steam is supplied increases, the metal heats up due to the condensation, and the condensation point shifts starting from the steam drum 14 as injection point in the direction of low-point drains 17 (see FIG. 2).

In larger-scale systems having a plurality of low-point drains 17, those low-point drains 17 from which steam emerges are closed and the flushing process is continued until steam has emerged from all low-point drains 17 .

In a method for cleaning at least a part of a water-steam circuit of a power plant, wherein a cleaning solution is introduced into the part requiring to be cleaned and subsequently is drained off, while the cleaning solution is being drained off or immediately thereafter steam for flushing is injected into the part requiring to be cleaned at at least one high point of the part requiring to be cleaned and low-point drains are opened or remain open in the part requiring to be cleaned and steam continues to be injected until steam emerges from the low-point drains and those low-point drains from which steam emerges are closed, and steam continues to be injected until steam has emerged from all low-point drains, whereupon the steam injection means is closed and all low-point drains are reopened, the following is achieved: