RU3888U1 - INSTALLING VACUUM WATER DEAERATION - Google Patents

Abstract

Installation of vacuum deaeration of water, containing a degasser with nozzle, sprayer and nozzles for supplying water and drainage of water and gas, a pump unit with a vacuum pump and a pump for pumping water, in communication with the degasser, respectively, with a vacuum line and a drainage line, a water level controller and lower sensors and the upper limit level in the degasser, characterized in that as a sensor of the water level regulator and sensors of the lower and upper limit level in the degasser, differs placed in the pump unit are used cially gauges plus-chambers which communicate with the drainage line and the minus - a vacuum line.

Description

M1Zh in 01D 19/00

THE SUGGEST OF THE LAST WATER DEAER

The technical field to which the utility model belongs.

The invention relates to the field of water degassing technology, in particular, to the technology of vacuum deaeration of water in column vacuum apparatuses and can be used in oil and gas and other industries where the removal of dissolved gases (in particular, oxygen) from water is required

State of the art

A known installation of vacuum deaeration of water, containing a degasser with nozzles for supplying water and discharging water and gas, a nozzle and a sprayer, a pump unit that houses a vacuum pump and a pump for pumping water. The installation has an automation system to maintain a given level of water in the degasser, which includes installed buoys in the degasser (tertiary water level sensors and lower and upper limit level sensors (see Mutin, and Makarov) Installation of vacuum deaeration of water UDV-3000 Express information No. 7, Series Sh-Z, SCHNGIZHM NESHNSHSH, M ,, I980rJ,

A disadvantage of the known installation is its low performance due to the placement of the level sensor and the lower and upper limit level sensors at a considerable height (more than 10 m). The indicated height is determined by the cavitation characteristics of the pump and the residual (absolute) pressure in the cavity above the water level in the degasser, which is a column with a height of more than 16 m. This arrangement of sensors makes them inaccessible for installation, commissioning, inspection and repair without a ladder and a special platform. about, in turn, increases the intensity of the known installation

The choice of sensors is also difficult, they must work in an explosive zone at ambient temperature, sometimes reaching up to -50 ° C. The range of choice of such devices offered by our industry is extremely narrow

Partially indicated drawbacks were eliminated in a known installation for deaerating water, comprising a degasser with nozzles for supplying iodine and water and gas, a nozzle and a sprayer, a pump unit with a vacuum pump in communication with the degasser with a vacuum line, and a water evacuation pump in communication with the degasser line water drainage The installation has automatic systems for maintaining a given water level in the degasser, including water level sensors, and lower and upper limit level sensors, of which: as a upper limit sensor At the lower level, a sealed container located at the bottom of the degasser is used, partially filled with water, with a pipe, the lower open end of which is located below the water level in the sealed container, and the upper open end is located below the gas outlet pipe and is in communication with the cavity of the degasser and the cavity of the sealed container above water communicated with the atmosphere; a buoy type level control sensor is installed in the aforementioned pressurized container; and only the sensor of the lower limit level of the buoy type, as in the known analogue, is installed directly on the degasser at an altitude of 8 m (USSR fo 1269605, IPC Yu1D 19/00, 1984),

Thus, the problem of poor performance of the Qia connection with the inaccessibility of sensors for their maintenance without a ladder and special platforms remains unresolved, as well as the conditions of the safety technology

Utility Model Essence

To improve the operational characteristics of the installation, reduce weight, ensure safety conditions in a known installation of vacuum deaeration of water containing a degasser with nozzle, sprayer and nozzles for supplying water and drainage of water and gas, a pump unit with a vacuum pump and a pump for pumping water, connected with a degasser, respectively, with a vacuum and a water drain line, a sensor for the water level controller and sensors for the lower and V upper limit level in the degasser, according to a utility model, as a sensor for the ur controller vnya water and sensors of the lower and upper limit levels applied differential pressure gauges, arranged in the pump unit, the plus-differential pressure chamber communicated with the drainage line and the minus -e linisgu- vacuum. List of drawings The proposed drawing shows a diagram of the installation of vacuum deaeration of water. Information confirming the possibility of implementation. The installation includes a degasser I having a pipe 2 for supplying water, a sprayer 3, a nozzle 4, a pipe 5 for water drainage, a pipe 6 for gas discharge, a pump unit 7, c which contains a vacuum pump 8, connected by a vacuum line 9 with the nozzle 6 of the degasser I, and a pump 10 of water drainage from the degasser I, communicated by the water drain line II with the nozzle 5 of the degasser I. In the insulated pump unit 7 between the drain line and water II and vacuum line 9 are the upper limit water level sensor 12, (differential pressure gauge) lower limit level sensor 13 (differential pressure gauge) and level regulator sensor 14 (differential pressure gauge), whose positive chambers are connected via pipelines 15 to the water discharge line II from degasser I and the minus chambers are connected with the vacuum line 9 via pipelines 16. The installation works as follows. The source water enters the degasser I through the pipe 2 of the water supply and through the sprayer 3 enters the nozzle 4, Flowing down the nozzle, the water in The vacuum created in degasser I by vacuum pump 8 is freed from the gases dissolved in it and enters the lower part of degasser I, from where it is supplied to the consumer through nozzle 5 via water outlet II, pump 10 is drawn to the consumer. The exhausted gases are removed from degasser I through nozzle 6 and vacuum line 9, and then vacuum pump 8 are sent to the atmosphere of the utility model

Sensors 12, 13 and 14 monitor the water level in the degasser. There is a pressure in line II of the water drain, which is the sum of the hydrostatic pressure of the liquid column in the degasser and the pressure above the water level in it. In order to measure only the water level in the degasser and eliminate the effect of pressure in space above the water level in the degasser, negative sensor chambers are connected to the upper cavity of the degasser I by means of a vacuum line 9, i.e., the sensors record the actual water level in the degasser I, excluding the effect of pressure above the water level in degasato.re I.

The sensor of the water level regulator in the degasser is necessary to ensure the regulation of the water level in the degasser I within certain limits. If the regulator fails and the water level in the degasser decreases, the sensor 13 for the lower limit water level will operate, turning off the water drain pump 10 and stopping the entire plant as a whole in order to prevent cavitation and possible breakdown of the pump 10. If the water level in the degasser I rises if the regulator fails, the sensor 12. of the upper limit water level will work, which will stop the vacuum pump 8 and the operation of the entire installation as a whole so as to prevent water from entering the cavity of the vacuum pump and its possible breakdown.

Thus, the placement of differential pressure gauges inside the heated pump unit will significantly reduce the mass of the degasser due to the elimination of metal structures in the form of service platforms and flight stairs, improve operating conditions, since all work on the maintenance of sensors, their repair and replacement will not be carried out outdoors (including in cold winter) and not at an altitude of 10, "" 15 m, but in a heated room, under normal operating conditions, which allow us to expand the range of devices used due to the fact that the pump unit is located outside the hazardous area, the devices used can be in a wide design, which will significantly reduce their cost, weight and dimensions, simplify the installation and maintenance system, and also allow you to place the degasser in any hazardous area

Claims (1)

Installation of vacuum deaeration of water, containing a degasser with nozzle, sprayer and nozzles for supplying water and drainage of water and gas, a pump unit with a vacuum pump and a pump for pumping water, in communication with the degasser, respectively, with a vacuum line and a drainage line, a water level control sensor and lower sensors and the upper limit level in the degasser, characterized in that as a sensor of the water level regulator and sensors of the lower and upper limit level in the degasser, differs placed in the pump unit are used cially gauges plus-chambers which communicate with the drainage line and the minus - a vacuum line.