RU207665U1 - SURFACE WATER PUMPING STATION - Google Patents

Abstract

The utility model relates to pumping, namely to surface water intake devices of pumping stations, designed to take water from open sources from a shallow depth and exclude the ingress of silt, large solid particles and fish fry into the suction system of pumping units. ) contains a self-cleaning screen drum filter 1 rotating along a horizontal axis with a stationary suction chamber 2 coaxially located inside it, equipped with a system of lift check valves with spring-loaded spools that prevent the change in the direction of water flow, a safety valve to protect against water hammer and a connecting flange 3 for hydraulic connection of the suction chambers to the inlet pipeline of the pumping station, while all elements of the device are mounted on a load-bearing frame 4, mounted on a frame 5 of metal profiles and pontoons 6. To ensure rotation and self-cleaning longitudinal drive blades 7 in the form of metal channels are fixed on the outer mesh cylindrical surface of the drum filter, and inclined water jet nozzles 8 are installed outside and inside the drum filter, hydraulically connected to the pressure line of the pumping station using a flexible pipeline 10 equipped with a shut-off and control valve 9 . The TLU is fixed with cables for frame structural elements to the coastal elements, and its pontoons 6 are made with filling necks equipped with plugs with the possibility of adjusting the immersion depth of the mesh drum filter and ensuring the horizontality of the TLU on the water surface. Through flexible pipeline 10, water from the pressure pipeline of the pumping station enters on the nozzles 8. From the upper nozzles 8 oblique pressure jets of water interact with the outer surface of the mesh drum filter 1, knocking down the retained dirt and interacting with the drive blades 7, driving the mesh drum filter 1. Inclined pressure jets of water from the lower nozzles 8 interact with the inner surface of the mesh drum filter 1, "knocking out" dirt from it and scaring fish away from the water intake zone. When using the utility model, the following technical result is achieved - increasing the reliability of the water intake surface device pumping station. 4 c.p. cl, 4 dwg

Description

The utility model relates to pump engineering, namely to surface water intake devices of pumping stations, designed to take water from open sources from a shallow depth and exclude the ingress of silt, large solid particles and fish fry into the suction system of pumping units.

As a prototype, a water intake device of a pumping station is selected, containing a rotating filter drum placed in a chamber so that its top is about 1/3 of the diameter above the water surface, from the supply channel of which clarified water is fed through a perforated pipe (serving as an axis of rotation) inside the drum and is filtered through a rotating mesh with clarified water discharge through a channel to the pumping unit inlet, while a pressure flushing device is installed above the upper part of the rotating mesh drum, and inside the drum under the upper (flushing) part of the mesh there is a tray for collecting waste flushing water discharged through the pipe , serving as the second support of the rotating drum [Abramov N.N. Water supply. Textbook for universities. Ed. 2nd, rev. and add. M, Stroyizdat, 1974, p. 313, fig. V 49].

The disadvantage of the known device is the low reliability of operation.

The purpose of the claimed utility model is to improve the reliability of the surface water intake device of the pumping station.

This goal is achieved by the fact that, according to the utility model, the water intake surface device of the pumping station (VPU) is characterized by the fact that it is a self-cleaning screen drum filter rotating around a horizontal axis with a suction chamber coaxially located inside it, equipped with a system of check valves to prevent changes in the direction of water flow and a connecting flange for hydraulic connection of the suction chamber to the inlet pipeline of the pumping station, while all the elements of the device are mounted on a power frame mounted on a frame made of metal profiles and pontoons, while to ensure rotation and self-cleaning of the drum filter on its outer mesh cylindrical surface, longitudinal drive vanes in the form of metal profiles, and water jet nozzles with an adjustable angle of inclination are installed outside and inside the drum filter, hydraulically connected to the pressure line of the pumping station using and a pipeline equipped with a shut-off and control valve, while the inclination of the external nozzles is adjusted to ensure the interaction of the water jets supplied through them with the driving blades of the rotating mesh drum filter.

In this case, the pipeline connecting the water nozzles with the pressure line of the pumping station is flexible.

For greater reliability of the TLU operation, the check valve system consists of lift check valves with spring-loaded spools with the possibility of their operation and ensuring the normal operation of the device when the spool axes are located at an angle of up to 30 ° from the vertical, while the total hydraulic resistance of the valves is commensurate with the hydraulic losses at the connection section chambers with an inlet pipeline of the pumping station.

In this case, the pontoons of the VPU are made with filling necks equipped with plugs with the possibility of adjusting the immersion depth of the mesh drum filter and ensuring the horizontal position of the device on the water surface.

In this case, the pontoons are made with filling necks equipped with plugs with the possibility of adjusting the immersion depth of the mesh drum filter and ensuring the horizontal position of the WPU on the water surface.

At the same time, the TLU is fixed with cables to the structural elements of the power profile frame frame to the coastal fixed elements.

The utility model is illustrated with drawings:

FIG. 1 - general view of the TLU disassembled (general view of the components of the TLU nodes and elements);

FIG. 2 - General view of the TLU assembled on the surface of the reservoir (side view);

FIG. 3 - General view of the TLU assembled on the surface of the reservoir (front view);

FIG. 4 - General view of the TLU connected to the pumping station (schematic top view).

List of items on the drawings:

1 - mesh drum filter;

2 - suction chamber;

3 - connecting flange;

5 - power frame;

6 - pontoon;

7 - driving blades;

8 - water jet nozzles;

9 - shut-off and control valve;

10 - flexible pipeline.

The water intake surface device of the main pumping station (see Fig. 1, Fig. 2, Fig. 3) contains a self-cleaning mesh drum filter 1 rotating around a horizontal axis with a suction chamber 2 coaxially located inside it, equipped with a system of lift check valves with spring-loaded spools to exclude changes in the direction of water flow (not shown), a safety valve to protect against water hammer (not shown) and a connecting flange 3 for the hydraulic connection of the suction chamber 2 to the suction line of the pumping station (see Fig. 4), while all elements of the device ( see Fig. 1) mounted on a load-bearing frame 4 mounted on a frame 5 of metal (aluminum) profiles and pontoons 6. To ensure rotation and self-cleaning of the drum filter on its outer mesh cylindrical surface, longitudinal drive blades 7 are fixed in the form of aluminum channels, and outside and inside the drum filter 1, inclined in Single jet nozzles 8, hydraulically connected to the pressure line of the pumping station by means of a flexible pipeline 10 equipped with a shut-off and control valve 9 (see. FIG. 4). The TLU is fixed with cables for the structural elements of the power profile frame frame to the coastal fixed elements (see Fig. 4), and its pontoons 6 are made with filling necks equipped with plugs (not shown) with the possibility of adjusting the immersion depth of the mesh drum filter 1 and ensuring the desired position WPU on the water surface (see Fig. 2).

Before starting the pumping station, the TLU is placed strictly horizontally relative to the "mirror" of water on the surface of the reservoir and fixed with cables for the frame elements of the structure to the coastal elements (see Fig. 4). In the absence of special lifting equipment, manual installation of the TLU on site is possible. Next, the flange 3 of the VPU is connected to the flange of the suction line of the pumping station (see Fig. 4) and the suction chamber 2 of the VPU and the inlet pipeline of the pumping station are filled with water using a vacuum pump installed in the upper part of the inlet pipeline of the pumping station (not shown).

A flexible pipeline 10 is connected to the water jet nozzles 8, which is hydraulically connected through a shut-off and control valve 9 to the pressure line of the pumping station. By turning the water nozzles 8, the jet feed angles are adjusted and the nozzles 8 are fixed in the desired position with threaded stops (not shown).

The work of the WPU is as follows.

They turn on the drive (diesel or electric) of the pump of the station and open the shut-off and control valve 9. Due to the pre-filling (filling) of the suction line of the pump, the latter starts to normally pump water from the reservoir towards the consumer (for example, into the sprinkler). When the pump is operating in the suction chamber 2 of the VPU, a vacuum is created, under the action of which its system of lift check valves with spring-loaded spools is in the open position, in which chamber 2 is in communication with the reservoir environment and is constantly filled with fish, solid particles and silt that have passed through mesh drum filter 1 with water flowing further sequentially into the inlet pipeline, pump, pressure line and to the consumer (for example, to the sprinkler).

Through flexible pipeline 10, part of the water from the pressure pipeline of the pumping station enters the nozzles 8. From the upper nozzles 8, inclined pressure jets of water interact with the outer surface of the mesh drum filter 1, knocking down the dirt retained by it and, hitting the drive blades 7, rotating the mesh drum filter 1. Inclined pressure jets of water from the lower inclined nozzles 8 interact with the inner surface of the mesh drum filter 1, "knocking out" dirt from it and scaring fish away from the water intake zone. All of the above ensures constant self-cleaning of the mesh drum filter 1, ensures reliable operation of the WPU and the pumping station as a whole.

When the pumping station is turned off, the pressure in its main line is equalized (in the pressure head it drops, and in the suction station it rises). The system of check valves is triggered, the spools of which, under the action of gravity and compression springs, go down and close the inlets of the suction chamber 2, as a result of which it is sealed, and the entire hydraulic system remains filled with water, which ensures the readiness of the pumping station to turn on and work at any time ...

When using the utility model, the following technical result is achieved - increasing the reliability of the surface water intake device of the pumping station.

Claims (5)

1. Water intake surface device of a pumping station, characterized in that it contains a self-cleaning screen drum filter rotating around a horizontal axis with a suction chamber coaxially located inside it, equipped with a system of check valves to exclude a change in the direction of water flow and a connecting flange for hydraulic connection of the suction chamber to the inlet pipeline of the pumping station, while all elements of the device are mounted on a load-bearing frame mounted on a frame made of metal profiles and pontoons, while to ensure rotation and self-cleaning of the drum filter, longitudinal drive blades in the form of metal profiles are fixed on its outer mesh cylindrical surface, and outside and inside the drum filter, water jet nozzles with an adjustable angle of inclination are installed, hydraulically connected to the pressure line of the pumping station by means of a pipeline equipped with a shut-off and control valve, the inclination of the external nozzles is adjusted to ensure the interaction of the water jets supplied through them with the driving blades of the rotating mesh drum filter. 2. The water intake surface device of the pumping station according to claim 1, characterized in that the pipeline connecting the water nozzles with the pressure line of the pumping station is flexible. 3. The water intake surface device of the pumping station according to claim 1, characterized in that the check valve system consists of lift check valves with spring-loaded spools with the possibility of their operation and ensuring the normal operation of the device when the spool axes are located at an angle of up to 30 ° from the vertical, while the total hydraulic resistance of the valves is commensurate with the hydraulic losses at the section where the chamber is connected to the inlet pipeline of the pumping station. 4. The water intake surface device of the pumping station according to claim 1, characterized in that the pontoons are made with filling necks equipped with plugs with the possibility of adjusting the immersion depth of the mesh drum filter and ensuring the horizontal position of the device on the water surface. 5. The water intake surface device of the pumping station according to claim 1, characterized in that it is fixed with cables for structural elements of the power profile frame frame to the coastal fixed elements.

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