SU37100A1 - Method of cooling steam boilers - Google Patents

Description

The proposed method of cooling down steam boilers using artificial circulation of boiler water consists in that hot boiler water, after being drained from the boiler of steam, is forced to circulate, before the boiler is cooled to the required temperature, in a closed system including a heat exchanger and a filter.

In FIG. Figure 1 shows an installation diagram for implementing a method for cooling steam boilers; FIG. 2- bottom view of the boiler; FIG. 3-5 view of heat exchanger in three projections.

The proposed method for cooling down steam boilers is based on creating an artificial circulation of boiler water through a heat exchanger. For this, boiler water goes through a three-inch drain valve and a binding ring and flexible hoses into a sediment filter tank into a three-inch pipe and from there a centrifugal pump r is passed through a heat exchanger back to the boiler, where it is fed through four valves b: two two-inch and two - one and a half-inch, installed at the axis level on both sides of the boiler, two on the right and left side. The heat exchanger is a finned tube system d with a heating surface of at least 4 meters each,

mounted in an amount of 12 brushes in such a way that it is possible to include each pipe separately into the circulation circuit; This is necessary to perform the adjustment method described below. The piping system is placed in the tank (through which the cooling water from the water supply system flows through the pipeline of the criminal code supplied with a thermometer o located at the entrance to the tank e and a water meter to; a thermometer is installed on the branch pipe and from the tank e

Thus, the boiler water circulates in a closed system and, through the finned tubes for its heat to the cooling water, lowers its temperature and, consequently, the temperature of the boiler. By including more or fewer cooling pipes and by increasing or decreasing the amount of cooling water, it is possible to achieve a significant rate of cooling of the boiler water with a smooth and uniform drop in its temperature. This is done by adjusting as follows: in the first moments, heat transfer can occur through the finned tubes into the air, by gradually inserting more and more tubes into the circuit; when the heat transfer to the air is insufficient, then they begin to fill the tank

tap water in such a way that it gradually lifted washed around large and large areas of the surface of the pipe fins. As the level in the tank rises, most of the pipes turn off and then the pipes turn on one after the other as needed; they are currently in standing water. When this standing water is so heated that the temperature drop of the boiler water starts to slow down, all the pipes are turned off except for one; they open the water valve for a small opening and the water in the tank doesn’t flow. As the temperature of the boiler water decreases, gradually, depending on the rapidity of the temperature drop, the finned tubes are turned on one by one until all of them are turned on. Further adjustments are made by increasing the amount of flowing cooling water;

The limits here are large, since the water pipe is designed two-inch.

As can be seen from the description of the adjustment process, the temperature of the boiler water can be lowered gradually and smoothly, observing it from the readings of thermometers installed on the circulating system after the water leaves the boiler and before entering the boiler.

The subject matter of the invention.

A method of cooling down steam boilers using artificial circulation of boiler water, characterized by

by the fact that after the steam has been descended, hot boiler water is forced to circulate in a closed system including a heat exchanger and a filter, until the boiler is cooled to the required temperature.

FIG.5