RU2166030C1 - Water intaking apparatus - Google Patents

Abstract

FIELD: hydraulic engineering. SUBSTANCE: apparatus has water intaking head, submerged pump, axial vertical monoblock pump, pipeline provided with two branched vertical pits. Submerged pump is positioned in one pit and axial vertical monoblock pump is positioned in other pit. Water intaking head is put onto pontoon so as to be dipped into water with variable level and has diffuser with spiral guides formed on its inner surface, mixing chamber communicated with atmosphere via flexible pipe with nozzle and provided with curved helical grooves formed in its inner surface, confuser connected to supply pipe via flexible pipeline. Perforated insert provided with wavy openings widening in the direction of water flow and fish protection device are positioned at water inlet side of head. Apparatus is adapted for intaking water from sources with fluctuating water level. EFFECT: enhanced reliability in operation and provision for intaking of purest water. 3 dwg

Description

 The invention relates to hydraulic engineering, in particular to water intake devices from sources with a large range of level fluctuations.

 Known water intake structure (see AS N 325316 MKI E 03 B 3/04, Bull. N 3, 1972), containing a water intake head, pipelines, pump station, submersible pump mounted with axial movement.

 The disadvantage of this water intake structure is the lack of reliability with large fluctuations in levels due to an increase in suction height.

 A water intake device is known (see AS M 1234542 MKI E 03 B 3/04, Bull. N 20, 1986), containing a water intake head, a submersible pump, an axial vertical monoblock pump, a pipe made with branching in the form of two vertical wells , in one of which a submersible pump is installed, and in the other, an axial vertical monoblock pump.

 The disadvantage of this water intake device is the ability to capture sediment due to the lack of a water intake threshold and blockage by floating objects and sludge inlets.

 The technical task of the invention is to increase the reliability of the intake device and ensure that the cleanest water is captured from the source by landing the water intake head on the pontoon to immerse it under a changing water level, which consists of a diffuser, on the inner surface of which there are spiral guides, mixing chambers connected to an atmosphere with an elastic pipe with a nozzle, on the inner surface of which there are curved helical grooves, confusers, connected to the supply pipe by a flexible pipe, and at the water inlet there is a perforated insert with wave-like openings expanding along the water and a fish protection device.

 The technical result is achieved in that a water intake device containing a water intake head, a submersible pump, an axial vertical monoblock pump, a pipe made with branching in the form of two vertical wells, one of which has a submersible pump, and the other an axial vertical monoblock pump, a water intake the head is mounted on the pontoon to immerse it under a changing water level and consists of a diffuser, on the inner surface of which there are spiral guides, mixing chambers, An elastic pipe connected to the atmosphere with a nozzle, on the inner surface of which there are curved helical grooves, a confuser connected to the supply pipe by a flexible pipe, and a perforated insert with wave-shaped openings expanding in the direction of movement of the water and a fish protection device are installed at the water inlet. The ability to move the water intake head at the source, the presence of protective devices at the water inlet, the creation of an emulsion of water and air ensures the intake of clean water, protects against plugging of holes and increases the reliability of the intake.

 In FIG. 1 shows a water intake device; FIG. 2 is a diagram of a water intake head, and in FIG. 3 - scan of the inner surface of the diffuser with spiral guides.

 The water intake device comprises a water intake head 1, consisting of a diffuser 2, on the inner surface of which there are mounted spiral guides 3, mixing chambers 4 connected to the atmosphere by an elastic pipe 5 with a nozzle 6 at the end. On the inner surface of the nozzle 6, curved helical grooves 7 are provided. The nozzle 6 is mounted on the float 8. The water intake head 1 has support legs 9, at the water inlet there is a perforated insert 10 with wave-shaped holes 11 expanding along the water, and a fish protection device 12 is installed on the pontoon 13. The water intake head 1 is connected by a flexible pipe 14 to the supply pipe 15, made with branching in the form of two vertical wells 16 and 17, in one of which 16 there is a submersible pump 18, and in the other 17 an axle oh vertical monoblock pump 19. The well 17 is fixed by a support flange 20 to the floor 21 of the machine room through a rubber seal 22.

 The water intake device operates as follows.

 Water through the water intake head 1 through the diffuser 2, enters, twisting in spiral guides 3, into the mixing chamber 4, where air is drawn in through the elastic pipe 5 from the atmosphere through the nozzle 6, which is twisted in a curved helical grooves 7. The nozzle 6 is located on the float 8 and is maintained constantly at the upper water level in the source. In the mixing chamber 4 creates a deep emulsified mixture having a low density. An insert 10 is installed at the water inlet, perforated by wave-shaped openings 11, expanding in the direction of movement of water in order to prevent jamming of solid particles. The insert 10 protects the hole from the ingress of floating objects and sludge, therefore, from blocking the passage sections. Fish protection device 12 provides protection of the fauna of the aquatic environment. Water-air emulsion, entering through the flexible pipe 14 into the supply pipe 15, creates an airlift effect in the wells 16 and 17. The submersible pump 18 pumps the working medium into the vertical well 16, and then into the well 17. By the axial vertical monoblock pump 19, the water is pumped to the consumer. The support ring 20, fixed to the floor 21 of the engine room on rubber seals 22, ensures the reliability of the installation of a monoblock pump 19.

 In the period of the year when the impeller of the axial vertical monoblock pump 19 is sufficiently deepened under the water level, the water is supplied to the consumer directly by this pump, and the submersible pump 18 is dismantled from the well 16. In this case, the pump is automatically started and is not always required, as for centrifugal pumps, auxiliary systems for filling them or additional deepening of the station building. Finding the water intake head 1 immersed on the pontoon always at a certain depth ensures high-quality water intake. The creation of an emulsion causes the effect of airlift in the wells, significantly reducing the energy consumption for raising water, and the design of the intake head ensures the reliability of the intake device.

 The originality of the proposed technical solution is to create conditions for reliable operation of the water intake device due to the selective properties of its elements and to use the airlift effect, creating a deeply emulsified water-air mixture.

Claims (1)

 A water intake device comprising a water intake head, a submersible pump, an axial vertical monoblock pump, a pipe made with branching in the form of two vertical wells, one of which has a submersible pump and the other an axial vertical monoblock pump, characterized in that the water intake head is planted on the pontoon to immerse it under a changing water level and consists of a diffuser, on the inner surface of which there are spiral guides, a mixing chamber connected to the atmospheres a flexible elastic pipe with a nozzle, on the inner surface of which there are curved helical grooves, a confuser connected to the supply pipe by a flexible pipe, and a perforated insert with wave-shaped openings expanding in the direction of movement of water and a fish protection device are installed at the water inlet.

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