RU2274803C1 - Thermal deaerator - Google Patents

Abstract

FIELD: heat power engineering.

SUBSTANCE: thermal deaerator comprises deaerating head mounted on the deaerating tank by means of adapting connection and bubbling device mounted in the tank. The bubbling device is made of steam-distributing collector provided with bubbling pipes. The steam-distributing collector is provided with the branch pipe mounted in the steam space of the deaerating tank directly under the adapting connection and coaxially to it.

EFFECT: enhanced reliability and efficiency.

1 cl, 1 dwg

Description

The invention relates to the field of power engineering, in particular to thermal deaerators, designed to heat and remove corrosive gases from feed water of steam generators, and can be used in power plants of thermal power plants, nuclear power plants and boiler plants.

Known thermal deaerator, containing in the lower part of the deaeration column a bubbler device in the form of a bubbler plate, and below the last one there is a horizontal perforated collector in communication with a vertical bypass pipe integrated in the bubbler plate, and the steam collector is equipped with a nozzle placed relative to the outlet end face with a gap the edges of the steam bypass pipe and are coaxial with the latter, and the nozzle diameter is smaller than the pipe diameter (SU 1183778, IPC F 22 D 1/28, C 02 F 1/20, published 07.10.85).

The disadvantages of the known deaerator are the increased vertical dimension and steam resistance of the deaeration column, which entails an increase in the height of the deaerator shelf, insufficient reliability of the deaerator when operating at sliding pressure and at variable loads.

Known thermal deaerator containing a deaeration column mounted on the deaerator tank using a transition fitting, a bubbler device placed in the tank, made in the form of a steam distribution manifold installed at a water level at an angle to the longitudinal axis of the tank, and the collector is further provided with perforated nozzles located perpendicular to the longitudinal axis of the tank and made with a length that increases with distance from the lower end of the collector (RU 2006473, IPC C 02 F 1/20, F 22 D 1/50, published Ano 1/30/94).

By the totality of the features, this known technical solution is the closest to the claimed one and is taken as a prototype.

A disadvantage of the known deaerator adopted for the prototype is the separate supply of steam to the steam volume of the deaerator and to the bubbler device, which entails the need to use an additional supply steam line and a steam receiver in the deaerator, which complicates the necessary distribution of steam flow between the steam receivers when operating at a sliding pressure and at variable loads, worsens the economic performance of the installation.

The claimed technical solution allows to reduce the number of supply pipelines of heating steam to a thermal deaerator, to ensure reliable operation of the deaerator under sliding pressure in a wide range of thermal and hydraulic loads.

A thermal deaerator is proposed, including a deaeration column mounted on a deaerator tank using a transition fitting and a bubbler device placed in the tank, made in the form of a steam distribution manifold with sparging pipes attached to it, while the steam distribution manifold is equipped with a nozzle located directly in the steam volume of the deaerator adapter and coaxially with it, and the pipe is additionally equipped with perforation and / or throttle device.

The invention is illustrated in the drawing.

The thermal deaerator includes a deaeration column 1 mounted on the deaerator tank 2 with a transition fitting 3, and a bubbler device placed in the water volume of the tank 2, made in the form of a steam distribution manifold 4 with sparging pipes connected to it 5. The steam distribution manifold 4 is equipped with a nozzle 6 placed in the steam volume of the deaerator tank 2 directly under the transition fitting 3 and coaxially with it. The pipe 6 is additionally equipped with a perforation and / or throttle device 7. To supply water to the deaeration column 1, a fitting 8 is installed.

Deaerator works as follows. The water to be deaerated enters the deaeration column 1 through the nozzle 8, sequentially passes the deaeration stages of the deaeration column 1 and is discharged into the deaeration tank 2, where it is aged and processed using a flooded bubbler device. Then the deaerated water is discharged from the tank 2 through the nozzle 9. The heating steam from the turbine or other source is supplied to the steam distribution manifold 4 in the deaerator tank 2. Then, the heating steam enters the bubbler pipes 5 of the bubbler device at the same time, through which deaerated processing is carried out in the tank 2 water by steam and warming it to saturation temperature, and into a vertical pipe 6 for venting steam into the steam volume of the deaerator with a throttle device 7 installed on it, and from there to the deaeration column 1, where s deaerating stage at which the basic process water deaeration.

Claims (2)

1. Thermal deaerator, including a deaeration column mounted on a deaerator tank using a transition fitting and a bubbler device placed in the tank, made in the form of a steam distribution manifold with sparging pipes attached to it, characterized in that the steam distribution manifold is equipped with a nozzle located in the steam volume tank directly under the transitional union and coaxially with it. 2. Thermal deaerator according to claim 1, characterized in that the pipe is additionally equipped with perforation and / or throttle device.