SU1407503A1 - Installation for vacuum deaeration of water - Google Patents

Abstract

The invention relates to the installation of vacuum de-aeration of water and can be used to remove dissolved gases (in particular, oxygen) from the water rf of the oil, energy and other sectors of the population. The purpose of the invention is to increase the reliability of the installation and reduce its metal consumption. The installation contains a degasser 1 and a preliminary deaeration compartment with nozzles 2 for supplying water and nozzles 5 and 6 for discharging water and gases, sprinklers 3, a nozzle 4 and a hydraulic lock 15, as well as vacuum pumps 22, 23, an airtight container 16 partially filled with water. A sealed container is placed below the degasser and is equipped with a water outlet pipe communicated with a suction pump. The upper open end of the pipe 19 is communicated with the pipe drain water from the degasser. 1 il. with

Description

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The invention relates to the technique of water deaeration and can be used to remove dissolved gases (in particular, oxygen) from water in the oil, energy and other branches of the national economy.

The aim of the invention is to increase the reliability of the installation and reduce its metal consumption.

The drawing shows schematically the installation of vacuum deazration of water

The installation contains a degasser 1 having a water inlet nozzle 2, a sprinkler 3, a nozzle 4, a nozzle 5 for draining water from the degasser, a nozzle 6 for withdrawing gas, a level regulator 7, a sensor 8 of the lower limit level.

Above the generator 1 is placed a pre-deaeration compartment 9 with a nozzle 10, a sprinkler 11, a nozzle for supplying water 12, venting gas 13 and water 14. The latter communicates through the hydraulic lock 15 the cavity of compartment 9 with the degasser cavity 1.

Under the degasser 1, a sealed container 16 is placed, the upper part of which is connected through the nozzle 17 to the atmosphere or to the drain pipe 18, and the lower part (below the water level) is connected through a vertical pipe 19 to the water outlet pipe from the degasser 1. pipe 20 of the water outlet connected to the suction pump 21

The cavity of the compartment 9 of the preliminary deaeration through the pipe 13 communicates with the low vacuum pump 22, and the cavity of the degasser 1 through the pipe 6 with the medium vacuum pump 23.

The installation works as follows.

The initial water is supplied to the compartment 9 of the preliminary deaeration of water through the water inlet nozzle 12 and through the sprinkler 11 enters the nozzle 10. The stack through the nozzle 10, water due to the vacuum created by the low vacuum pump 22 communicated with the compartment 9 through the nozzle 13, is released from the main (most) part of the gases dissolved in it and enters the lower part of compartment 9, from where through the water outlet pipe 14 and the hydraulic lock 15, which functions as a cavity separator with different pressure, through the water supply pipe 2 enters the degasser 1, this height of the trap is determined by the races

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By the same token, based on the magnitude of the difference in residual pressure in the degasser 1 and compartment 9, created by vacuum pumps of medium vacuum 23 and low vacuum 22, respectively.

In the degasser 1, the water with the dissolved gases remaining in it through the spray 3 enters the nozzle 4. Due to the fact that the medium vacuum pump 23 creates a higher vacuum in the degasser 1 than the pump 22 in compartment 9, the water in the degasser 1, the nozzle passage 4, it is released from the gases remaining in it and enters the lower part of the degasser 1. The sucked off gases are removed from the degasser 1 through the nozzle 6 by means of a vacuum pump 22, and the deaerated water enters the nozzles 5 and 17 from the degasser 1 to the airtight container 16. The lower end pipes 19 is lowered below the water level in the airtight container 16, and the vertical size (height) of the pipe 19 must be such as to ensure unobstructed draining of water from the vacuum apparatus - degasser 1 into the pressureless capacity 16, which by means of the pipe 17 communicates with the atmosphere or with a discharge pipe 18. So, if the residual pressure in the degasser is 0.05 kgf / cm, then the distance from the water level in the tank 16 to the water level in the degasser must be at least 9.5 m.

The water that has entered the tank 16 is then supplied through the pipe 20 by a suction pump 21 to the consumer.

In order to regulate the level of water in degassing tank 1, a level 7 regulator is provided that maintains the water level in degasser 1 within certain limits.

If the level regulator 7 fails and the water level in the degasser 1 drops to the lower limit level, the sensor 8 of the lower limit level will operate, which will abnormally stop the pump 21, draining water from the tank 16.

When the water level in the degasser 1 increases and the regulator 7 of the level 7 fails, the water level in the hermetic tank 16 will also increase, and when the water level in the tank 16 reaches the nozzle 17, excess water through the nozzle 17 will be unimpededly removed from the tank 16. When

this eliminates flooding 4 in degasser 1.

Thus, the proposed technical solution makes it possible to make the hermetic container 16 flow-through. This means that the lack of water in an airtight container, which may occur under certain conditions of operation of the installation, will be compensated by deaerated water flowing through the container. cases of installation failure due to lack of water in an airtight container will disappear (the container has become flow-through).

In addition, the flow through of a sealed container and the implementation of deaerated water intake by suction pumps directly from the sealed container allows reducing the height of the degasser by 2-3 m, which, for example, with a degasser diameter of 3.0 m will reduce the weight of the degasser by 2.7 tons.

1407503

nozzles The economic effect is also achieved in the manufacture, trans- formation and assembly of the column by reducing the total weight.

Claims (1)

Invention Formula Installation of vacuum deaeration of water, Q, containing a degasser and compartment pre-deaeration with water inlet and outlet pipes for water and gas, sprinklers, nozzle and water seal, vacuum pumps, airtight container partially filled with water, and a vertical pipe, the lower open end of which is located below the water level in the airtight container, x cavity which is communicated with the atmosphere by a 2Q swarm, excluding the fact that, in order to increase the reliability of the installation and reduce its metal consumption, the sealed capacity of the formula of the invention Installation of vacuum deaeration of water containing a degasser and compartment pre-deaeration with water inlet and outlet pipes for water and gas, sprinklers, nozzle and water seal, vacuum pumps, a sealed container partially filled with water, and a vertical pipe, the lower open end of which is located below the water level in a sealed container, whose cavity x communicated with the atmosphere, otl, and with the fact that, in order to increase the reliability of the installation and reduce its metal consumption, It is equipped with a pattaka method, the proposed 25-thru discharge water pump allows to reduce the thrust, and the upper open end of the metal pipe for the production of degassing is connected to the thorax degasser.