RU22219U1 - STEAM GENERATOR - Google Patents

Description

200tl31827

liliifppilpp

IPC F 22B37 / 48

STEAM GENERATOR

The utility model relates to the field of heat power and can be used in various types of steam generators.

A steam generator is known from the prior art, comprising heating screen surfaces with lowering drainage and elevating evaporation tubes connected to the lower water collector and the upper steam manifold, which are connected to the drum and / or remote cyclones (SU 918655 A, F22B 33/02, 1982; SU 1174670 A, F22B 37/26, 1985; SU 145669 A1, F22B 33/18, 1989; Buznikov EV, Cyclone separators in steam boilers, M., Energia, 1969, pp. 127, 213, 230, 231 ) At the same time, heating screen surfaces are made in the form of block panels of screen pipes with horizontally located collectors (Styrikovich MA, Katkovskaya K.Ya., Serov EP, Steam generators of power plants, M.-L., Energia, 1966, p. 12, 264272). The main disadvantage of this design is the difficulty of removing sludge (insoluble suspended particles) from the boiler water circulating on the screen heating surfaces, even with a significant amount of continuous blowing.

The utility model is aimed at increasing the efficiency of removing sludge from boiler water while reducing the amount of continuous purging.

The solution to this problem is provided by the fact that in a steam generator containing screen heating surfaces in the form of panels with lowering water supply and lifting

evaporation pipes connected to the lower water and upper steam manifolds, which are connected to the drum and / or remote cyclones, according to the utility model, the lower water collector of the panel is inclined to a horizontal plane and provided with an additional periodic purge pipe, which is connected to its lower part, at the same time, the lowering water supply pipes are connected to the upper part of the said collector.

Moreover, the angle of inclination of the lower water collector to the horizontal plane is 10 -30.

In addition, the upper steam manifold of the panel of the screen tubes is parallel to the lower water collector, which simplifies the layout of the screen heating surfaces.

The proposed design of the panel of the screen tubes provides the possibility of separating the sludge from the boiler water in the lower water collector, sedimentation of the sludge in the lower part of the latter and subsequent; its removal of the sludge from the collector during its periodic purging, which allows to reduce the amount of continuous blowing, to increase the purity of steam and, accordingly, increase the overall efficiency of the steam generator.

In FIG. 1 schematically shows a general view of a steam generator; Fig. 2 is a general view of a panel of a heating screen surface.

The steam generator comprises a drum 1 and / or remote cyclones 2 with screen heating surfaces 3, which are made in the form of panels (figure 2) of screen pipes, including their lower water collector 4, installed with an inclination to the horizontal plane at an angle of 10 4-30, which are connected to the lowering

water supply pipes 5, lifting evaporation pipes 6, periodic blowdown pipe 7, upper steam manifold 8 mounted parallel to the lower water collector 4 and connected to the drum and / or remote cyclones 2 by a steam exhaust pipe 9.

The steam generator operates as follows.

Feed water enters the drum 1 and / or external cyclones 2 through the pipeline 10, and the generated steam is discharged through the steam line 11. The boiler water in the process of circulation along the screen heating surfaces, enters the lower water collector 4 of the panel through the lowering water supply pipes 5 to its upper part and, flowing from top to bottom along the inclined collector 4, it is evenly distributed along the lifting evaporation pipes 6. At the same time, due to the centrifugal effect resulting from the rotation of the boiler water at the entrance to the lifting evaporation pipes 6 , there is a separation of sludge - solid insoluble particles suspended in boiler water. Separated sludge accumulates in the lower part of the lower water collector 4 and is removed from the water volume during periodic purging through the pipe 7.

Claims (3)

1. A steam generator containing heating screen surfaces in the form of panels with lowering water supply and lifting vapor pipes connected to the lower water and upper steam manifolds, which are connected to the drum and / or remote cyclones, characterized in that the lower water collector of the panel is inclined to horizontal plane and is equipped with an additional periodic purge pipe, which is connected to its lower part, while the lowering water supply pipes are connected to the upper part of the of said collector. 2. The steam generator according to claim 1, characterized in that the angle of inclination of the lower water collector to the horizontal plane is 10-30 ^o . 3. The steam generator according to claim 1 or 2, characterized in that the upper steam manifold of the screen tube panel is parallel to the lower water collector.