RU14999U1 - DEVICE FOR REMOVING OXYGEN FROM MAIN WATER OF HEAT SUPPLY SYSTEMS - Google Patents

Abstract

A device for removing oxygen from the make-up water of heating systems, comprising a boiler, a deaeration column, a storage tank, inlet and outlet fittings installed in a deaeration column connected through a drain pipe to the storage tank, characterized in that the boiler is installed at a distance (0, 1-0.2) m from the rear wall of the boiler, a coil for heating chemically purified water, the inlet of which is connected by a pipeline to the pump station, and the outlet - with the inlet fitting, while the deaeration column contains a swirl heated to 90-95C water, a guide sleeve and a vent pipe connected to the outlet fitting.

Description

Device for removing oxygen from make-up water of heating systems

The utility model relates to heat supply systems and can be used to remove oxygen from make-up water.

Currently, steam power plants and pipelines for steam and hot water are widely used in the national economy. Many large enterprises use water vapor or hot water for technological and heating purposes. Moreover, in many cases, steam boilers installed in boiler rooms are not used at full capacity. To save energy, steam boilers are transferred to the hot water mode. The reconstructed boiler when burning natural gas provides water heating from 70 to 115 degrees Celsius. Compensation of the consumed hot water in the boiler is carried out by supplying chemically cleaned make-up water.

To prevent corrosion of pipes and boilers, oxygen must be removed from make-up water. For this purpose, devices are used to purify oxygen from industrial water, for example, described in the book Operation of steam boilers and steam pipelines. Technique, 1971

About 9

2 O 00

IPC F22D 1/00

Closest to the proposed is a device for removing corrosive gases (oxygen and free carbon dioxide) from makeup water of steam boilers, adopted as a prototype and shown in Fig. 2, p. 9 Instructions for installation and operation of atmospheric deaerators (GOST 16860-77), Oblpoligrafizdat. Donetsk, 1981

The prototype device consists of a deaeration column connected through a drain pipe to the battery tank and having inlet and outlet fittings. The streams of make-up water to be cleaned of oxygen are fed into the deaeration column through the inlet fitting to the upper perforated plate. From the last plate, water flows in jets to a lower plate located below, from where a beam of oversized jets enters the battery tank, where steam is supplied, which exposes the water to intensive processing. The vapor-gas mixture is discharged from the deaeration column through the outlet fitting.

The disadvantage of the prototype is the low efficiency when it is used in conjunction with boilers in hot water performance. This disadvantage is due to the fact that for the effective operation of the prototype device, the mandatory presence of steam is necessary, which ensures the removal of oxygen from make-up water. However, in boilers in the hot-water version there is no steam.

The objective of the utility model is to create a device for the effective removal of oxygen from make-up water of heating systems with a steam boiler in a hot water design.

The essence of the utility model lies in the fact that in the device for removing oxygen from the make-up water of heating systems containing a boiler, a deaeration column, a storage tank, inlet and outlet fittings installed in a deaeration column connected through a drain pipe to the storage tank, the installed at a distance of (0.1-0.2) m from the rear wall of the boiler

- 2 a coil for heating chemically purified water, the inlet of which is connected by a pipeline to the pumping station, and the outlet - with an inlet fitting, while the deaeration column contains a swirl heated to 90-95 degrees Celsius, a guide sleeve and a gas outlet pipe connected to the outlet nipple.

The essence of the utility model is illustrated by drawings, which depict:

in FIG. 1 is a block diagram of a device;

in FIG. 2 - layout of the coil relative to the rear wall of the boiler.

In FIG. 1, 2 are indicated:

1- boiler;

2- coil heating chemically purified water;

3- input outlet fitting;

4- swirl;

5 - deaeration column;

6- guide sleeve;

7- gas outlet pipe;

8 - output fitting;

9- drain pipe;

10-battery tank.

The proposed device operates as follows.

Chemically purified cold water from the pumping station enters the coil 2, made of pipe segments with a diameter of 51 mm, connected by welding with taps and installed in the boiler furnace 1 (the direction of water movement in Fig. 1 is shown by an arrow). The coil 2 is installed at a distance of (7 (0.1-0.2) m from the rear wall of the boiler 1 (Fig. 2). This arrangement of the coil eliminates moisture condensation on the walls of the boiler 1. An increase in the distance Gf is impractical, since in this case disrupt the uniformity of the combustion of the gas burner.

- 3 For the effective operation of the device, the water temperature in the coil should be 90-95 ° С. Water heated to this temperature through the inlet 3 enters the deaeration column 5, in which the swirler 4 is rigidly fixed, providing rotational movement of the water entering the deaeration column 5. Due to the rotational movement of the water, an increase in the speed of movement occurs. At the same time, the pressure in the water decreases, which contributes to the formation of bubbles filled with oxygen in the water (cavitation phenomenon). Cavitation bubbles under the action of the field of centrifugal forces are separated from the water and form on the axis of the deaeration column 5 a stable vapor-gas vortex. Evacuation of gas into the atmosphere is carried out through a gas outlet pipe 7, fixed in column 5 with a guide sleeve 6 and connected to an outlet fitting 8. The water purified from gas bubbles through a drain pipe 9 enters the accumulator tank 10, where it settles and is finally freed of oxygen.

The main parts and components of the proposed device coil 2, deaeration column 5, swirler 4, gas pipe 7 are made of materials not subject to corrosion.

Thus, the proposed utility model provides effective removal of oxygen from the make-up water of heating systems with a steam boiler in a hot-water design.

The industrial applicability of the utility model is determined by the possibility of its production from known materials using known technological processes and the possibility of using heat supply systems with a steam boiler to remove oxygen from makeup water.

Claims (1)

A device for removing oxygen from the make-up water of heating systems, comprising a boiler, a deaeration column, a storage tank, inlet and outlet fittings installed in a deaeration column connected through a drain pipe to the storage tank, characterized in that the boiler is installed at a distance (0, 1-0.2) m from the rear wall of the boiler, a coil for chemically purified water heating, the inlet of which is connected by a pipeline to the pump station, and the outlet - with the inlet fitting, while the deaeration column contains a swirl heated to 90-95 ^o C water, a guide sleeve and a vent pipe connected to the outlet fitting.