SU42090A1 - High Pressure Steam Boiler - Google Patents

Description

The invention relates to high pressure steam boilers consisting exclusively of steam superheater coils, from which superheated steam is supplied partly to the consumer, and partly to the evaporator to form saturated steam due to the heat of superheat introduced with the steam from the superheater. - In the proposed steam boiler, the active driving force in the ejector intended for producing saturated steam, and at the same time for generating circulation of steam in the system, is the feed water supplied through the economizer by the feed pump. When mixed with superheated steam coming from the coil of the superheater, the water is converted into saturated steam in contact with the free surface of the water in a row of annular tubes of the accumulator and creating a constant circulation in one direction.

The drawing shows schematically a longitudinal vertical section of a high pressure steam boiler.

The feed water is supplied by a pump 7 at a pressure of about 200-250 atm. in a water economizer 2, where it is heated by the heat of gases to a temperature of about 350 ° (10-15 ° below the boiling point of water at an economizer pressure) and through nozzles 3, made according to the type of nozzles

(166)

Pelton's water turbines flow at high speed into the ejector connected to the collector 5 of the boiler containing superheated steam (about 500).

The outgoing water at high velocity is the active driving force and ejects superheated steam, mixes with it and evaporates and, at the same time, creates steam circulation in the system.

The resulting vapor in the evaporator, which has a high speed (due to the velocity of the incoming water), enters the ejector diffuser 4, where the dynamic pressure is partially converted into a static one.

Saturated steam goes further to the pipeline 6 to the accumulator 7, which consists of a series of annular tubes partially filled with water.

In the tubes of the accumulator, the vapor touches the water surface, the vapor is saturated, the water droplets that are not evaporated are separated and the scalers remain.

When it moves through the coarse accumulator 7, the pairs, in contact with the free surface of the water and moving in one particular direction, create constant circulation in the annular tubes, which constantly mix the water and maintain the same temperature in all parts water volume. From the annular tubes of the accumulator 7 (Saturated steam through line 8 falls into the collector 9, and from it 72 co-heaters located in the furnace fO of the boiler supplied with burners //).

Pass through the coil tubes / 2, the steam overheats due to the heat of the furnace to a temperature of about 425 ° and enters the collector / 5, from where part of the steam through the pipeline / 4 is taken to the line to the steam consumer, and the second part passes through the JG located in the furnace the boiler coils overheater / 5, overheats up to about 500 ° C and enters the collector 5, and from there again into the ejector 4.

The subject matter of the invention.

Claims (2)

1. A high pressure steam boiler .VII with a heating surface consisting of exclusively from the steam superheater coils, distributing the superheated steam in it between the consumer and the evaporator, producing saturated steam due to the superheat heat introduced with the steam from the superheater, characterized in that an ejector 4 is used to produce saturated steam and simultaneous circulation of steam in the system , the active driving medium in which feed water is supplied through an economizer 2 by a feed pump / for transformation into saturated steam when displaced with superheated steam from the coil of the superheater / 5. 2. The use in the boiler according to claim 1 of an accumulator 7 consisting of a series of annular tubes in which steam, in contact with the free surface of water and moving in one particular direction, creates a constant circulation.