RU2215194C2 - Water supply station - Google Patents

Abstract

FIELD: water supply facilities. SUBSTANCE: invention relates to pumping stations providing delivery of water to cottages and other buildings. Proposed water supply station contains reservoir with pressure gauge, pump, valves and suction and delivery pipelines. Branch pipe is placed in pump rarefaction zone. One end of said branch pipe is in zone of rarefaction being fitted into contraction-ejector along axis of impeller of centrifugal pump and diffuser, and other end communicates with outer surface of pump. Branch pipe passage area is adjustable. Branch pipe is installed for longitudinal displacement, and reservoir is furnished with air pressure and water level transmitters providing cutting in and out of valves and ;pump at preset parameters. EFFECT: simplified design of station, improved its operating characteristics. 5 cl, 2 dwg

Description

 The present invention relates to a water management complex, to devices that provide water to cottages, buildings, structures. It can be used in fire fighting equipment.

 A device is known that can be used in a water supply station to simplify its design and automate pumping of air [1].

 The device comprises a housing with an opening for air intake and a nozzle located inside the housing for accelerating and turbulizing water. The gap between the housing and the nozzle is made conical.

 An essential feature of this device is the presence of a special booster and turbulent nozzle that provides a high degree of intensification of the process of trapping air with water. This complicates the design.

 Station [2] - the prototype contains a tank with a manometer for compressing air and water, a pump, valves, suction and discharge pipelines. The air cavity in the tank is fed by compressor pressure and serves to squeeze water out of the tank and supply it to the consumer. The pressure of compressed air in the tank can be increased and with the help of a pump, by which water is supplied to the tank, occupies the volume in it and compresses the air in the upper part of the tank. The process is controlled by a pressure gauge.

 The disadvantage of this device is that the process of pumping air and water is divided into two separate processes, which requires a compressor for air and a pump for water. This complicates the design and operation of the station, reduces its consumer properties.

 The objective of the invention is to simplify the design of the water supply station, increase its consumer properties, as well as expand the arsenal of technical equipment for a similar purpose.

 The technical result is achieved by the fact that in a station containing a tank with a manometer, a pump, valves, forcing and suction pipelines, air is ejected into the tank functionally using a standard centrifugal pump, into the rarefaction zone of which a nozzle is introduced, which communicates with the air medium at the other end. In the particular case, the pipe connected to the air is installed along the axis of the impeller of the pump and diffuser.

 The bore of the pipe is adjustable, and the pipe itself has the ability to move longitudinally. The tank is equipped with a sensor for air pressure and water level, providing on and off valves and a pump with the given parameters. The impeller acts as a turbulator. Intensively mixes water with air, providing its capture process, and delivers water with air to the capacity of the water supply station. At the same time, two processes in the station - air and water supply separately, are combined into one process - joint supply of water and air. This simplifies the design of the station, simplifies its operation, that is, increases its consumer properties.

 In more detail, the invention will be described below.

 In FIG. 1 is a schematic drawing of a water supply station. Figure 2 shows a drawing of air pumping using the impeller of an electric pump and a confuser of the secondary water flow of the same pump.

 The water supply station of FIG. 1 consists of a tank 1 with a water measuring tube 2, a pressure gauge 3, a valve 4, a discharge pipe 5, a pump 6, a suction pipe 7, level sensors 8 and a valve 9.

 In FIG. 2 shows: the shaft of the pump motor 10, the pump housing 11, the pump cover 12, the filler plug 13, the nozzle 14, the valve 15, the pipe 16, the confuser-ejector 17, the diffuser 18, the impeller 19.

 The water supply station operates as follows.

 Through the filler hole under the plug 13 (see Fig. 2) of the pump 6, water is poured into the cavity of the cover 12, which fills the pipeline 7 connected to the water source. The water source in FIG. 1 and 2 are not shown.

 Open valve 4 and turn on pump 6.

 The impeller 19, throwing water into the discharge pipe 5 (shown in Fig. 2 by an arrow), begins to suck in water from the suction pipe 7 (shown by an arrow) and then from a water source.

 A constant vacuum is created in the diffuser 18, where water enters from the suction pipe 7 through the gap between the diffuser 18 and the confuser-ejector 17. A secondary stream of water is sucked into the confuser-ejector 17, which did not enter the discharge pipe 5.

 Inside the confuser-ejector 17, a nozzle 16 passes along its axis and is connected to a valve 15 mounted on the cover 12. When the valve 15 is opened, the air will be ejected (sucked) into the diffuser 18 and intensively mixed by the impeller 19 with water, which is then pumped through the discharge pipe 5 and open valve 4 enters the tank 1.

 In tank 1, compressed air is accumulated above the water in the upper part. The pressure in the air cavity is controlled by a pressure gauge 3, and the water level is monitored by a transparent gauge tube. The amount of ejected air is controlled by opening or closing the valve 15 (see figure 2).

 Using valves 9 and 15, it is possible to provide in the tank 1 the specified parameters for water level and pressure in the air cavity.

 So if there is a lack of air pressure in the tank 1, water is drained from it through the valve 9, after which it is closed and the valve 4 is opened. The pump 6 is turned on and the valve 15 is opened. When the required air pressure is reached, the valve 15 is closed, the pump 6 is turned off and the valve 4 is closed, and valve 9 supplies water to the consumer.

 In order to adjust the efficiency of air ejection, the nozzle 16 has the possibility of longitudinal movement, and the bore of the nozzle is controlled by the opening or closing of the valve 15.

 The proposed design of the water supply station allows you to combine two processes - air supply and water supply, in one process - water supply with air along one line, which simplifies the design and operation of the station, that is, increases its consumer properties, expands the arsenal of technical equipment for a similar purpose.

 In this case, a standard centrifugal pump is used, in which the impeller not only supplies water with air to the tank, but also pre-mixes them intensively, increasing the air-absorbing capacity of the water.

 All this is ensured by minimal modifications to the pump, the introduction of an additional part, a nozzle, into the existing ejector.

 The above-described suction of air into the tank 1 can be implemented on any pumps having a vacuum zone in the running pump. In this case, the ejection pipe can be introduced into the rarefaction zone from anywhere.

 The operation of the proposed water supply station can be fully automated. We will analyze the work of the station using the control panel and sensors that control this work.

 Let, for example, the level in the tank 1 drop to the min mark (see FIG. 1) and the air pressure in the air cavity decreases due to its expansion and does not provide the station. In this case, the 8 min level sensor turns on pump 6 without air ejection and closes valve 9. Water is pumped to the max level and 8 max sensor turns off pump 6. Pressure has increased in the air cavity and the station is ready for operation.

 If, simultaneously with a decrease in the water level, an air leak occurs, then at the same time as the water is pumped, the valve 15 is turned on, through which air is ejected. Moreover, if the max level is reached, but the working pressure has not yet been created in the cavity, the pump 6 will turn off and the valve 9 will open, discharging water from the tank 1 to the min level. Next, the valve 9 closes and the pump 6 again supplies water with air.

 When operating pressure is reached, pump 6 and valve 15 will turn off.

 Thus, the air cavity in the container 1 is monitored both by pressure and by volume.

 The water supply station contains a tank with a pressure gauge, a pump, valves, suction and discharge pipelines. A pipe has been introduced into the rarefaction zone of the pump, the other end of which communicates with the outer surface of the pump. In the particular case, the nozzle is inserted at one end into the confuser-ejector along the axis of the impeller of the centrifugal pump and the diffuser, and the other communicates with the outer surface of the pump, the bore of the nozzle is adjustable and installed with the possibility of longitudinal movement, and the tank is equipped with air pressure and water level sensors, providing switching on and off of valves and a pump at the set parameters. The station is technically applicable. It is produced in the conditions of mechanical workshops and in operation ensures the achievement of a technical result.

Sources of information
1. A. p. USSR 1699565 A, B 01 3/04, C 02 3/20 from 10.19.89. "Device for aeration of water."

 2. Certificate for utility model 14614 RU, F 04 В 23/00 dated 06/21/99. "Water supply station" - a prototype.

Claims (5)

 1. A water supply station containing a container with a pressure gauge, a pump, valves, suction and discharge pipelines, characterized in that a pipe is introduced into the rarefaction zone of the pump, one end of which is in the rarefaction zone, and the other communicates with the outer surface of the pump.  2. A water supply station according to claim 1, characterized in that the pipe is inserted at one end into the confuser-ejector along the axis of the impeller of the centrifugal pump and diffuser, and the other communicates with the outer surface of the pump.  3. A water supply station according to claim 1, characterized in that the flow area of the pipe is adjustable.  4. A water supply station according to claim 1, characterized in that the pipe is installed with the possibility of longitudinal movement.  5. A water supply station according to claim 1, characterized in that the tank is equipped with air pressure and water level sensors that enable the valves and the pump to be turned on and off at specified parameters.

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