RU31779U1 - Deaerator - Google Patents

Description

The utility model relates to the field of water treatment by deaerating the removal of aggressive gases - oxygen and carbon dioxide from water, and, more specifically, to water deaeration plants used in hot water systems to reduce the corrosion rate of pipelines.

A known installation for deaeration of water, containing a vacuum deaerator with connected pipelines of source water, deaerated water and vapor, the last of which is a vacuum deaerator connected to a gas exhaust device. In the installation, an additional vacuum deaerator is included in the source water pipeline with a completely connected pipeline (see patent RU 3 22189946 according to class C02F 1/20 with priority U. 11.2000, published on 09.27.2002, BI No. 27).

A disadvantage of the known installation is the complexity of its hardware design and high cost due to

the need for the process under vacuum in two stages. A known installation for deaeration of water, containing nozzles for supplying source water, a heating agent - steam, a vacuum deaerator equipped with a steam-jet ejector to remove vshara and high pressure deaerator, equipped with a device for removing vapor under pressure, as well as a pipe connecting the device for removal evaporation of a deaerator of high pressure with a steam-jet ejector of a vacuum deaerator and a pipe for discharging deaerated water. (see Dhashnt, JVfo2182116, class CO2F 1/20, priority 5.06.2001, publ. 10.05.2002, B.I. No. 13, 2 hours)

DEAERATOR.

C 02 F 1/20

A disadvantage of the known installation is the complexity of its hardware design for deaeration under vacuum and overpressure, high cost, both because of the above and because of the loss of pressure, which leads to the need to install additional pumps.

A deaerator is known that is closest in purpose and technical essence to the claimed one, consisting of a cylindrical body with a lid and a bottom, a deaerating device in the form of a plate with a perforated bottom for contacting the deaerated water with a heating agent - steam, a source water supply pipe with a central pipe for its distribution facing the bottom of the plate, a steam inlet pipe connected to the bottom of the plate, a central gas outlet pipe located in the upper part of the body and a nozzle for deaerating ovannoy water. (see A.S. USSR No. 1165846, class C02F 1/20 with priority 13.08.82, publ. 7.07.85, B.I. No. 25).

A disadvantage of the known deaerator is 11 that it is not possible to use the latter in hot water systems, at central heating stations (CCP), in individual buildings due to:

- the absence of steam there and the high cost due to the complete loss of pressure in the deaerators in communication with the atmosphere, which requires additional installation of pumps,

- low productivity due to the need to perform a small diameter deaerator, because with an increase in the diameter of the deaerator, the effect of deaeration is reduced due to the deterioration of gas separation due to freezing of the gas fuses in the upper part of the housing.

DP AGE P2P The technical result of the claimed utility model is

the possibility of using a deaerator in hot water systems to reduce the corrosion rate of pipelines by reducing the cost of the structure and increasing its productivity with a sufficiently high deaeration effect.

The technical result is achieved in that in a deaerator, consisting of a cylindrical body equipped with a fastener and a bottom, a source water supply pipe with a central pipe for supplying it to a deaerating device, a deaerating device, gas and deaerated water discharge devices, a diameter ratio of a sealed, thermally insulated body to the diameter of the pipe for supplying water to the deaerating device is at least 3.5: 1, the deaerating device is made in the form of mutually perpendicular inverse gutters in, coaxial to the body, with sectors located between each of the adjacent pairs of gutters, connected to them and forming the cover of the body, the central pipe for supplying water to the deaerating device is facing the body 1 fipps, automatic valves for gas discharge are placed on each of the segments formed by the intersection the back of the grooves the bottom of the body is made in the form of mutually perpendicular grooves, coaxial to the body, with sectors located between each of the adjacent pairs of gutters and connected to them, at both ends of each gutter mounted pipes with valves for washing and disposal of sludge, the central pipe, connected to the conduit for removing the deaerated water was placed on the bottom of the housing facing thereto, and the duct communicated with hot water conduit system.

DP AGE D3D

The figure 2 presents the deaerator in plan.

The figure 3 presents a deaerator, bottom view.

The deaerator consists of: a cylindrical sealed housing 1, a source water supply pipe 2 connected to a central pipe for supplying water to a deaerating device 3 (the ratio of the diameters of the housing 1 and the central pipe 3 is at least 3.5: 1), a deaerating device 4, executed in the form of mutually perpendicular return grooves 5 coaxial with the housing 1, equipped with automatic gas exhaust valves 6, located on each of the segments formed by the intersection of the return grooves 5. Sectors 7, mounted m Between each of the pairs of return troughs 5 and connected with them, form a cover 8 of the housing 1. The central pipe for supplying water to the deaerating device 3 is facing the cover 8 of the housing 1. The central pipe 9 connected to the pipe for discharging the deaerated water 10 is located above the bottom 11 case 1 and turned to this bottom.

The bottom 11 of the housing 1 of the deaerator is made in the form of grooves 12 mutually perpendicular to the housing 1 and arranged between each of the adjacent pairs of these grooves and sectors 13. The ends of each of the grooves 12 are equipped with nozzles 14 with valves 15 for drainage and removal of the resulting draft. A pipeline for discharging deaerated water 10 is in communication with a pipeline of a hot water supply system; the installation case is equipped with thermal insulation 16.

The deaerator works as follows:

Water preheated in water heaters

temperature 55-60 C, at a pressure of 4-6 kg / cm, containing oxygen and carbon dioxide released during the heating of water, served in

DPAGE n4D

cylindrical sealed housing 1 of the deaerator, through the source water supply pipe 2 with a central pipe for supplying it to the deaerating device 3, facing toward the cover 8 of the housing 1. Getting into the area located between the central pipe for supplying water to the deaerating device 3 and the cover 8 of the housing 1 formed by mutually perpendicular reverse grooves 5, coaxial to the housing 1, with sectors 7 located between each of the adjacent pairs of grooves, sectors 7 connected to the above-mentioned grooves, deaerated water directed vertically upward flow, to the deaerating device 4, hits the cover 8 of the housing 1, is distributed along mutually perpendicular reverse grooves 5; and escaping as a result of phase separation (liquid and gaseous), gas is discharged through automatic valves 6 mounted on each of the segments formed by the intersection of the gutters 5. Distributed, decentralized gas discharge helps to eliminate the formation of stagnant zones and more complete gas separation.

Maintaining a ratio of the case diameter to the diameter of the nozzle for supplying water to the deaerating device at least 3.5: 1 ensures effective separation of the water and gaseous phases due to a sufficient (10-fold) reduction in the flow rate of deaerated water in the deaerator body compared to its speed in the nozzle to supply the source water to the deaerating device.

When the ratio of the case diameter to the diameter of the nozzle for supplying water to the deaerating device is less than 3.5: 1, the speed of water movement in the deaerator body will increase, which will lead to a rise in bubbles of gas insoluble in water and, therefore, the deaeration process will deteriorate.

DP AGE PBP

An increase in the ratio of the diameter of the housing to the diameter of the nozzle for supplying water to the deaerating device is impractical because it will lead to an unjustified increase in the size of the deaerator, and, consequently, to an increase in the cost of the latter.

Deaerated water is drawn through a central pipe 9 connected to a pipe for discharging deaerated water 10, located above the bottom 11 of the housing 1 and facing the bottom 11, made in the form of grooves 12, mutually perpendicular to the housing 1, located between each of the adjacent pairs and connected with sectors 13. Deaerated water through the central pipe 9 and a pipe for its discharge 10 is discharged into the hot water supply pipe connected to the latter. In the case of the formation of sediment, it is washed and removed through the gutters 12 using nozzles 14 with valves for washing and discharging the sediment 15 mounted at the ends of each of the gutters 12.

The troughs forming the krypps and the bottom are 5 and 12, respectively, provide structural rigidity.

In the deaerator, in the pressure mode, at the indicated pressure, deaeration is carried out - separation of the liquid and gaseous phases - while maintaining the temperature of the source water provided by thermal insulation 16 of the body of the deaerator 1, minimizing heat loss.

Under these conditions, the possibility of re-dissolving aggressive gases in the water supplied to the hot water supply system, where the water is partially cooled, is excluded, compared with its temperature at the outlet of the central heating water heater. This prevents corrosion intensification.

DPAGE D7D

pipelines of hot water systems, which was due to the re-dissolution of aggressive gases in them.

The implementation of the deaerator in an airtight housing reduces its cost by reducing energy costs due to the exclusion of pressure losses occurring in direct contact with a heating medium - steam in deaerators that communicate with the atmosphere.

The proposed deaerator in comparison with the known provides:

- the possibility of using it in hot water systems - on central heating and in individual buildings - due to its low cost due to the exclusion of the use of a rather expensive heating agent - steam, as well as due to the exclusion of pressure losses with a sufficiently high deaeration efficiency;

- the ability to create deaerators of great productivity due to the design of the deaerating device with dispersed gas exhaust, which provides an increase in the effect of deaeration due to the exclusion of stagnant zones during its centralized discharge.

The deaeration efficiency, due to the creation of optimal process speeds, is also ensured by maintaining the ratio of the diameters of the casing and the nozzle for supplying water to the deaerating device at least 3.5: 1, respectively.

The savings from the use of deaerators of this design on a large city scale will amount to hundreds of millions of rubles a year.

DPAGE DSD

Author: L, 7 Kucherenko D.I.

Claims (1)

Deaerator, consisting of a cylindrical body equipped with a cover and a bottom, a source water supply pipe with a central pipe for supplying it to a deaerating device, a deaerating device, gas and deaerated water discharge devices, characterized in that the ratio of the diameter of the sealed, heat-insulated body to the diameter of the pipe for supplying water to the deaerating device is at least 3.5: 1, the deaerating device is made in the form of mutually perpendicular inverse grooves, coaxial to the body, with sects The holes placed between each of the adjacent pairs of gutters, connected to them and forming the body cover, the central pipe for supplying water to the deaerating device faces the body cover, automatic valves for gas discharge are placed on each of the segments formed by the intersection of the return channels, the bottom of the body is made in the form of mutually perpendicular gutters, coaxial to the housing, with sectors located between each of the adjacent pairs of gutters and connected to them, at both ends of each of the gutters are mounted pipes with valves for washing and discharging sludge, the central pipe connected to the pipeline for discharging deaerated water is placed over the bottom of the body, facing it, and the pipeline itself is in communication with the pipeline of the hot water supply system.