Device for supplying water from the well

 

(57) Abstract:

The invention relates to devices and mechanisms for exploitation of groundwater sources and intakes, particularly for pumping of artesian water in the main line of urban water systems. The device contains housed in a casing pipe, discharge pipe, multi-section pump with submersible motor and the device hydroplane installed below the static water level in the well. The device hydroplane made in the form of the hull and the main sealing element, and the main sealing element is designed in the form of a hollow cylinder and is mounted on the outer side wall of the case and the case of the adaptation of hydroplane made in the form of a float placed in the casing pipe coaxially with the pressure pipe. In the inner and outer side walls of the float is made holes for guide tubes, the axis of symmetry of which is radially oriented in the plane perpendicular to the axis of symmetry of the float, each of the guide tubes placed the recoil spring and plunger fixed to the inner surface of the primary sealing cell battery (included) the Oh on its outer surface an annular groove, and at the upper end of the float is mounted additional sealing element made in the form of a ring, the internal diameter of which does not exceed the outer diameter of the support element. The technical result of the invention is to provide a reliable seal between the walls of the discharge pipe and casing wells. 3 Il.

The invention relates to devices and mechanisms for exploitation of groundwater sources and intakes, particularly for pumping of artesian water in the main line of urban water systems.

Known devices for water supply from wells containing discharge pipe immersed in the borehole multistage pump gear shaft running inside the discharge pipe, and a motor mounted on the frame above the mouth of the well [1].

The presence of known devices gear transmission, not allowing you to accurately adjust the clearance between the impellers and guide apparatus of the pump, leading to a greater volume loss, reduced feed pressure and efficiency of the pump.

Closest to the proposed technical sown the th pipe discharge pipe, line of high pressure, laid along the discharge pipe to the wellhead, mnogosektsionye pump with submersible motor and the device hydroplane installed on the delivery pipe below the static water level in the well [2].

A disadvantage of the known device is the unreliability of the seal, which is a consequence of the presence of the water column above the sealing element, made in the form of inflatable chambers, while the impact of the underside of the specified element rarefied air.

The objective of the invention is the creation of a reliable seal between the walls of the discharge pipe and casing of the well.

The problem is solved in that the device for supplying water from wells containing housed in a casing pipe, discharge pipe, multi-section pump with submersible motor and the device hydroplane installed below the static water level in the well, the device hydroplane made in the form of the hull and the main sealing element, and the main sealing element is designed in the form of a hollow cylinder and is mounted on the outer side wall of the case and the case of the adaptation of getrenne and outer side walls of the float is made holes for guide tubes, the symmetry axis of which is radially oriented in the plane perpendicular to the axis of symmetry of the float, each of the guide tubes placed the recoil spring and plunger fixed to the inner surface of the primary sealing element, on the walls of the discharge pipe is installed supporting element is made in the form of a cylinder located on its outer surface an annular groove, and at the upper end of the float is mounted additional sealing element made in the form of a ring, the internal diameter of which does not exceed the outer diameter of the support element.

In Fig. 1 is a diagram of the proposed device for supplying water from the well of Fig. 2 - design of its devices hydroplane, Fig. 3 - the same, in working condition.

The device is located in the casing pipe 1 well and contains a section of the discharge pipe 2 with the flanges 3, multi-section pump with 4 water intake grid 5, submersible motor 6 and installed in sections 7 discharge pipe fixture of hydroplane, which included a float 8, the abutment element 9 with the annular groove 10, the main sealing element 11 with clamps 12-13, and more at Zmeiny return spring 16 and the plunger 17, fixed on the inner surface of the primary sealing element (Fig. 2-3).

The device operates as follows.

The natural water level in the well is characterized by a static level (line I in Fig. 1). After you enable the submersible motor 6 specified level is reduced by the amount So that an appropriate balance between the amount of water pumped by the pump 4 through the intake grid 5, and the amount of water influx from the aquifer. With the occurrence of the equilibrium in the well continuously during operation of the device the dynamic level, which, rising gradually as the distance from the well (curve II in Fig. 1), forms a so-called cone of depression of radius Ro.

Distance So between dynamic and static water levels in proportion to the productivity of the well. When this static level is determined by the hydrodynamic characteristics of groundwater and the value of the atmospheric pressure and the dynamic level should be not less than half a meter above multistage pump 4, which provides the desired cooling of the housing of the latter. I.e., with decreasing natural water level (direct the em by the value proportional to the value of dSx.

Therefore, to compensate for the effects of static level on the performance of the pump 4, the device is equipped with a device hydroplane in the corps, made in the form of a float 8, placed in the casing pipe 1 bore coaxial sections 2 penstock, and the support element 9 has a cylindrical shape with located on its outer surface an annular groove 10. The outer side wall of the float 8 by clamps 12 and 13 are mounted respectively the top and bottom edges of the main sealing element 11 made in the form of a hollow cylinder, and the upper end of the float is provided with an additional sealing element 14 made in the form of a ring, the internal diameter of which does not exceed the outer diameter of the support element 9 (Fig. 1-3).

In addition, in the inner and outer side walls of the float 8 evenly with holes for at least three guide tubes 15, the axis of symmetry of which is radially oriented in the plane perpendicular to the axis of symmetry of the float. In each of the guide tubes 15 posted by return spring 16 and the plunger 17, one of the ends of which are fixed on the inner surface of ikuemi through the flanges 3 at immersing the device in the casing 1 and the preceding sections 7, equipped device Hydrobotany, choose from the calculation that the interface in the well crossed the wall section 7 above float 8 installed in the original condition in which the free ends of the plungers 17 are located in the annular groove 10 of the support element 9. In this case, the length of the tappet 17 is chosen so that the condition of the float 8 the walls of the main sealing element 11 is held in a position where there is clearance with the casing pipe 1, makes it possible to mount the device (Fig. 2).

After mounting the unit to a predetermined depth start the motor 6. In the hydraulic shock occurring at the time of launch, the float 8, shifting down and overcoming the influence of the return spring 16, the outputs of the annular grooves 10, the free ends of the plungers 17.

With the lowering of the water level in the borehole additional sealing element 14 reaches the upper end of the support element 9 and block the gap between the inner side wall of the float 8 and section 7 of the discharge pipe. At the same time the pushers 17 relative to the walls of the casing 1 will be moved to the position at which the main sealing element 11 under the action of the closure of these gaps achieving dynamic water level in the well will be accompanied by a weakening influence on the media boundary atmospheric pressure, what causes an additional inflow of water from the aquifer into the well casing 1 well.

After turning off the electric motor 6 as a result of sharp increase of water level in the well will occur hammer acting on the float 8 and the walls of the main sealing element 9. With a sharp displacement of the float 8 up to the distance at which under the action of the return spring 16, the free ends of the plungers 17 are annular groove of the support element 9, is restored above the gaps for a smooth lifting device from the well (Fig. 2).

Thus, the effect of the rarefied air medium to the sealing element, which is the unreliability of seals in the prototype, the proposed device is a prerequisite for reliable operation of the devices hydroplane.

Sources of information

1. Shabalin, A. F. Operation of industrial pipelines. M.: metallurgy, 1972, S. 143.

2. Patent RU N 2083768, class E 03 B 3/08, 1997, bull. 19.

Device for supplying water from wells containing housed in a casing pipe, discharge pipe, multi-section pump with submersible motor and fixture hydropro is latania made in the form of housing and the primary sealing element, and the main sealing element is designed in the form of a hollow cylinder and is mounted on the outer side wall of the case and the case of the adaptation of hydroplane made in the form of a float placed in the casing pipe coaxially with the pressure pipe, the inner and outer side walls of the float is made holes for guide tubes, the axis of symmetry of which is radially oriented in the plane perpendicular to the axis of symmetry of the float, each of the guide tubes placed the recoil spring and plunger fixed to the inner surface of the primary sealing element, on the walls of the discharge pipe is installed supporting element, made in the form of a cylinder located on its outer surface an annular groove, and at the upper end of the float is mounted additional sealing element made in the form of a ring, the internal diameter of which does not exceed the outer diameter of the support element.

 

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FIELD: construction.

SUBSTANCE: water-intake tubular well comprises a perforated casing pipe in soil arranged with its perforated section in a water-bearing layer of rocks, and a water-lifting device in it. At the upper end the casing pipe is equipped with a cover with a collar installed on it, on the cord of which there is a water-lifting pipe suspended. The water-lifting pipe has an injection valve at the lower input and a circular body along the casing pipe diameter with a suction valve and elements of hydraulic seal along the external diameter in the form of circular grooves. To drill a water-intake tubular well, a device is used, which comprises drilling pipes and a cutting drilling bit. The drilling bit is equipped with a container with a valve made of light material, for instance, plastic, to stock damaged rock. Drilling pipes are lighter pipes, for instance, water-gas pipes. On the upper end of drilling pipes there is a transverse lever of rotation. In case of high drilling depth a device is used for lowering and raising operations, including a clamp of drilling pipes and a support for clamp placement. The support is made in the form of a well head with openings of trapezoidal shape on the upper end. The clamp is made of one movable and one fixed halves with a tightening bolt and radial levers laid into openings of the well head.

EFFECT: increased height of water raising from a water-intake tubular well.

4 cl, 5 dwg

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