RU2142538C1 - Pumping station - Google Patents

Abstract

FIELD: water-supply systems. SUBSTANCE: pumping station of second-stage lift is intended for supplying water directly to consumers in water-supply systems, land reclamation, irrigation, etc. Pumping station has pumping house with equipment, water-receiving chamber, water delivery duct and pressure pipelines. Water-receiving chamber is made in the form of one or several bore-holes which incorporate casing pipes and hydraulic pipe strings. Each casing pipe has bottom with opening provided with stopper, each hydraulic pipe string has blind bottom and is connected with water delivery duct. Located between bottoms of hydraulic pipe string and casing pipe is shock-absorber. located between bottom of casing pipe and shock-absorber is hydraulic seal. In addition, pumping station is provided with collector pipeline which is connected with pressure pipelines. Aforesaid arrangement of pumping station requires no special operations for lowering of ground water level during construction and allows for reducing ground surface area occupied by construction site. Also there is no need for erection of walls and bottom of water-receiving chamber from prefabricated or monolithic reinforced concrete with subsequent waterproofing. EFFECT: higher efficiency. 3 cl, 2 dwg

Description

 The invention relates to pumping stations of the second rise, designed to supply water directly to consumers, and can be used for water supply, land reclamation, irrigation, etc.

 A well-known pump station containing a pump room with equipment, a water intake part and a pressure pipe (see Rychagov V.V. et al., Edited by Chebaevsky V.F. Design of pumping stations and testing of pumping units. - M .: Kolos, 1982, p. 158-159, Fig. 102).

 A pump station containing a pump room with equipment, a water intake chamber, a siphon conduit and pressure pipelines was selected as a prototype (see V.V. Rychagov et al., Edited by V.F. Chebaevsky. Design of pumping stations and testing of pumping units. - M .: Kolos, 1982, p. 157-158, fig. 101).

 The disadvantage of the second lift pumping stations selected as an analogue and prototype is that the design of their water intake chambers (water receiving parts) is not technologically advanced in construction and, especially, if the pumping station is being built on water-saturated soils.

 Typically, the walls and bottoms of these water intake chambers (water intake parts) are made of precast or monolithic reinforced concrete with subsequent waterproofing, which requires a large consumption of building material and increases the construction time and its cost.

 In water-saturated soils, the construction of pumping stations with such a design of water intake chambers (water receiving parts) requires a large amount of work to reduce water, which not only significantly increases the construction time and cost, but also increases the area of the land occupied for construction by 1.2 - 1, 3 times.

 The technical task of the invention was to create the design of a pumping station, the construction of which on water-saturated soils would not require work to reduce water. The design of the pumping station should provide a significant reduction in the volume of excavation and construction time, as well as reducing the cost of building materials.

 The essence of the invention lies in the fact that in a pumping station containing a pump room with equipment, a water inlet chamber, an inlet conduit and pressure pipes, the water inlet chamber is made in the form of one or more wells in which casing pipes and hydrocolumns are placed, each casing pipe is provided with a bottom, which has an opening provided with a plug, and each hydrocolumn is equipped with a blank bottom and is connected to a supply conduit.

 In addition, each well is additionally equipped with a shock absorber, which is placed between the bottoms of the hydrocolumn and casing.

 The casing is equipped with a hydraulic lock, which is located between the bottom of the casing and the shock absorber.

 The pump station is additionally equipped with a manifold pipe to which pressure pipelines are connected.

 The proposed design of the pumping station does not require work to reduce water during construction and can reduce the area of land occupied by construction by 1.2 - 1.3 times and reduce the volume of earthwork by 4 or more times.

 Moreover, the design does not require the walls and bottom of the intake chamber made of precast or monolithic reinforced concrete with subsequent waterproofing, which reduces the consumption of building materials used for the construction of this chamber by 2-8 times.

 Due to the fact that the water intake chamber is made in the form of wells, the latter are also exploratory wells during design and survey work before construction begins.

 The advantages described above can reduce the cost of construction by 4-6.5 times and reduce its time by 3 times.

 The invention is illustrated by drawings, where in FIG. 1 shows a perspective view of a pumping station; in FIG. 2 is a section AA in FIG. 1.

 The pump station contains a pump room 1 with equipment located in it and a water intake chamber made in the form of one or more wells 2. The drawings show three wells 2, however, their number may be different. The number of wells 2 that make up the water intake chamber depends on the required water flow.

 Each of the wells 2 contains a casing 3, which is provided with a bottom 4 having an opening 5 provided with a plug 6.

 Inside the casing 3 there is a hydrocolumn 7, equipped at one end with a blind bottom 8, and at the other end with a sealed head 9.

 Between the bottom 8 of the hydrocolumn 7 and the bottom 4 of the casing 3, a clay hydraulic lock 10 and a shock absorber 11, for example made of rubber, can be placed.

 The hydraulic lock 10 eliminates the possibility of groundwater penetrating through the hole 5, closed by a plug 6, and their slow, gradual accumulation between the walls of the casing 3 and the casing 7.

 Seals 12 are installed between the walls of the casing 3 and the walls of the hydrocolumn 7 in its upper part mounted in the floor of the pump room 1.

 Each of the hydrocolumns 7 is connected to the supply conduit 13 and is equipped with a submersible pump 14, which is connected to the pressure pipe 15.

 The use of submersible pumps in the described pump station is most optimal. However, other types of pumps can be used, mounted in the pump room 1 and connected to the hydrocolumns by suction pipelines.

 All pressure pipelines 15 can be connected to a collector pipe 16, to which pipelines are connected that supply water directly to consumers (not shown).

 The presence of the collector pipe 16 eliminates the interruption of water supply to consumers in the event of a sudden failure of one of the pumps 14. In addition, the presence of the collector pipe 16 allows for subsequent maintenance and scheduled repairs of the pumps 14, hydrocolumns 7 and wells 2 also without shutting off the water supply.

 The pump room 1 of the proposed pump station can be both underground and ground type. The drawings show an underground type of pumping room.

 The construction of the water intake chamber of the pumping station is as follows.

 The required (estimated) number of wells 2 is drilled, into which the casing pipes 3 are then lowered. The plugs 6 are in the open state, as a result of which groundwater filling the wells 2 flows through holes 5 in the bottoms 4 into the casing 3.

 When the casing 3 rests with its bottoms 4 in the soil of the bottoms of the wells 2, the latter acts on the plugs 6, which plug the holes 5 tightly. After that, groundwater is pumped out of the casing 3, made on the bottoms 4 of the hydraulic clay locks 10 and the rubber shock absorbers 11 are installed Seals 3 are lowered inside the casing 3. Seals 12 are installed between the walls of the casing 3 and the walls of the hydrocolumns 7 in their upper parts mounted in the floor of the pump room 1.

 The pump station operates as follows.

 Water is supplied through inlet conduits 13 to the cavity of the hydrocolumn 7, from where it is taken by submersible pumps 14 and supplied via pressure pipelines 15 to the collector line 16. From the collector line 16, water flows directly to consumers from pipelines (not shown).

Claims (4)

 1. A pumping station comprising a pump room with equipment, a water intake chamber, a conductive water conduit and pressure pipelines, characterized in that the water intake chamber is made in the form of one or more wells in which casing pipes and hydrocolumns are placed, each casing pipe is provided with a bottom that has a hole provided with a plug, and each hydrocolumn is equipped with a blank bottom and is connected to a supply conduit.  2. The pumping station according to claim 1, characterized in that each well is equipped with a shock absorber, which is placed between the bottoms of the hydrocolumn and the casing.  3. The pump station according to claim 1 or 2, characterized in that the casing is equipped with a hydraulic lock, which is located between the bottom of the casing and the shock absorber.  4. The pump station according to claim 1, characterized in that it is equipped with a manifold pipe to which pressure pipelines are connected.

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