The intake device
(57) Abstract:The intake device refers to devices and mechanisms for exploitation of groundwater and water intake structures, in particular for pumping of artesian water in the main line of urban water systems. The device includes accommodated in the casing tube well discharge pipe, multi-section pump with submersible motor and the device hydroplane in the composition of the housing and the sealing element, the inner cavity of which is connected with a line of high pressure, laid along the penstock, and the case of the adaptation of hydroplane installed with the possibility of reciprocating displacement along the axis of the discharge pipe and is made in the form of a segment of pipe, the ends of which are provided with flanges. The sealing element is designed in the form of two inflatable chambers, one of which is placed in the internal cavity of the housing, and the other in the area between the case of the adaptation of hydroplane and the wall of the casing wells, the average diameter of the pipe segment housing is chosen equal to half the difference between the values of the external diameter of the flanges and the diameter of the pressure truboprovodny pipe casing devices hydroplane. This allows you to combine working plane devices hydroplane with the static water level in the well, i.e., to increase the degree of rarefaction of air over its dynamic level and thus increase the power intakes. 1 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 water intake device 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 .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 to the technical essence and the achieved effect is the intake device containing housed in a casing theobromine in the corps, rigidly mounted on the delivery pipe below the static water level in the well, and the sealing element, the inner cavity of which is connected with a line of high pressure, laid along the discharge pipe .A disadvantage of the known device consists in the following. It is known that underground sources subject to seasonal fluctuations in natural water level. The most undesirable are irreversible lowering of the static water level in skaine, which can be caused, for example, education of the district of depression under the influence of water from nearby wells. Regardless of hydrologic conditions on power intake can be affected by clogging of wells torn parts of the intake device, clogging of a strainer wells, etc., Therefore, the known device is equipped with a device hydroplane, which is rigidly mounted between the flanges (top and bottom) two pieces of pipe, the discharge pipe below the static water level. This allows to reduce the impact of natural water level in the well at the power intake. However, in the rigid fastening devices hydroplane, the VA, what is the result of education in the casing pipe bore water column due to the weight of which the sealing element acts excess pressure under simultaneous exposure to the underside of the specified element rarefied air, secondly, is not achieved the maximum effect from the use of devices hydroplane, which is the higher, the closer to the static water level posted by the sealing element (the distance between the specified element and the housing of the pump depends on the degree of rarefaction of air over the dynamic water level in the well), which affects the capacity of the water intake.An object of the invention is to increase the capacity of the water intake.This task is solved in that the intake device housing adaptations of hydroplane installed with the possibility of reciprocating displacement along the axis of the discharge pipe and is made in the form of a segment of pipe, the ends of which are provided with flanges, the sealing element is designed in the form of two inflatable chambers, one of which is placed in the internal cavity of the housing, and the other in the area between the case of the adaptation of hydroplane and the wall of the casing wells, the average diameter of the discharge pipe, and the cavity of the inflatable chambers connected by a hose, passes through a through hole made in the wall of the pipe segment corps devices hydroplane.The drawing shows the proposed device and explain its working.The unit is mounted in the casing pipe 1 well and contains a discharge pipe 2, mnogosektsionye pump 3 with the water intake grid 4, submersible elecrodvigatel 5, device 6 hydroplane and line 7 high blood pressure. The case of the adaptation of hydroplane made in the form of a segment of the pipe 8 with the flanges 9 and 10, and its sealing element in the form of two inflatable chambers 11 and 12, the cavity of which is connected by a hose 13.The device operates as follows.The natural water level in the casing pipe 1 is characterized by a static level, the value of A1 (A2) which depends on the hydrodynamic characteristics of groundwater and magnitude of atmospheric pressure. When the water from the aquifer level in the well is reduced by the value of S1 (S2), which is greater than the higher performance of the unit in the structure of the pump 3 and the motor 5. With the onset of equilibrium between the amount of pumped through the intake grid 4 voutes 5 dynamic level (curve B1 (B2) in the drawing), which, rising gradually as the distance from the well, forms a so-called cone of depression radius R1 (R2).When mounting the unit in the casing 1 of his device 6 hydroplane placed on the section of the discharge pipe 2, the walls of which when submerged device to a predetermined depth will pass through the interface in the well. Part of the fixture 6 is made of light material pipe section 8 with flanges 9 and 10, between which is placed an inflatable chambers 11 and 12. Cavity chambers are connected by a hose 13 so that when the air supply line 7 high pressure volume of the chambers 11 and 12 of the first pressure Po reaches a value at which the device 6 POPs up, and then under the action of pressure Px closes the gaps with casing pipe 1 and the pressure pipe 2.As a result, after running the motor 5 to the balance between the volume pumped into the distribution network of water and its volume flowing into the casing 1 from the aquifer (i.e., the achievement of dynamic water level) will be reduced (compared to atmospheric) pressure on the surface of the water, causing more of her prickley motor 5 with the purpose of maintenance or repair work pressure Px in the cavity between the inflatable chambers 11 and 12 through the line 7 is reduced to the original value Po, when restored gaps with casing pipe 1 and with the pressure pipe 2 for a smooth lifting device from the well.Thus, in the non-rigid attachment devices 6 on the delivery pipe 2 completely exclude the possibility of education in the casing pipe bore water column, the excess pressure on the walls of the inflatable chambers 11 and 12 in the presence of a rarefied environment under the latter imposes additional constraints on the choice of the design of the device 6 hydroplane device. Combining the work plane devices hydroplane with static level allows you to achieve maximum effect from the use of the device, because the degree of rarefaction of air over the dynamic water level in the well is determined by the distance between the sealing element of the device and the pump casing, which allows to increase the capacity of the water intake.In addition, seasonal fluctuations or permanent lowering of the static water level A1 in the well, for example when lowering it to the value A2, the pressure Px of the air in the chambers 11 and 12 of device 6 off of elektrodvigatel the spine with level A2. The result excludes the effect of air column height dS on the degree of rarefaction of air over the dynamic water level in the well that allows you to partially compensate for the lower power intake for seasonal and permanent lowering of the static water level in the well.Sources of information
1. Shabalin, A. F. Operation of industrial pipelines. - M.: metallurgy, 1972, S. 143.2. Application N 95105997/03 (011002) from 18.04.95, "the Intake device. The decision VNIIKP for a patent for invention from 22.04.96, The intake device containing housed in a casing tube well discharge pipe, multi-section pump with submersible motor and the device hydroplane in the composition of the housing and the sealing element, the inner cavity of which is connected with a line of high pressure, laid along the discharge pipe, wherein the case of the adaptation of hydroplane installed with the possibility of reciprocating displacement along the axis of the discharge pipe and is made in the form of a segment of pipe, the ends of which are provided with flanges, the sealing element is designed in the form of two inflatable chambers, one of which is placed bidney tube wells, the average diameter of the pipe segment housing is chosen equal to half the difference between the values of the external diameter of the flanges and the diameter of the discharge pipe, and the cavity of the inflatable chambers connected by a hose, passes through a through hole made in the wall of the pipe segment corps devices hydroplane.
FIELD: obtaining or collecting drinking water or tap water, particularly to wash artesian wells along with flow rate and specific flow rate determination.
SUBSTANCE: method involves supplying compressed air in water lifting pipes of airlift with mixers arranged at different levels; blocking water flow in hoses and feeding compressed air to mixers through separate hoses. At the beginning of above operation compressed air is supplied to upper mixer and then in water lifting pipes. Airlift is brought into stable operational mode. Compressed air is fed in downstream mixer and operation is provided by two mixers. Then upper mixer is switched off or kept in operational state.
EFFECT: increased efficiency and extended range of technology methods.
2 cl, 2 dwg
FIELD: water intake structures, particularly obtaining and confining water by means of pit wells.
SUBSTANCE: water production device comprises casing pipe provided with disc valve and with perforated filter arranged in lower part thereof. Upper casing pipe part has steel bottom with pressure relief valve adapted to reduce pressure inside casing pipe and compressed air inlet pipe having valve. The valve is connected with receiver and with air compressor. Connected to disc valve is air-tight removable plug having cable fastened to the disc valve to provide manual valve opening in the case of valve seizure. Pipe with water displacement valve is installed in the casing pipe and extends for the full casing pipe length. The pipe has check valve and shutoff valve located at well outlet. Method for water production from artesian well with the use of above device involves filling casing pipe with water portion under dynamic artesian horizon level pressure; activating compressor; filling the receiver with compressed air; supplying compressed air into casing pipe under pressure corresponding to summary height of well and water tower; displacing water from casing pipe into water tower; closing compressed air inlet valve; venting air from casing pipe through pressure relief valve, which is closed after air discharge operation termination and continuing above filling-displacement operations.
EFFECT: increased reliability and pressure without the use of submersible pump provided with electric motor.
2 cl, 1 ex, 1 dwg
FIELD: engines and pumps.
SUBSTANCE: proposed pump unit is additionally provided with the device for fastening cables to motor, cable locking disk, tripping-safety and operating cables, and collar. Said collar consists of base disk and rubber-metal skirt. Base disk has four holes for attachment to pump and cutout to receive power supply cable. Rubber-metal skirt consists of moving reinforcing carcass with rings and rubber element. Besides, pump unit incorporates head cap communicating well via flange joint with pressure pipeline.
EFFECT: simplified and accelerated mounting/dismantling.
FIELD: process engineering.
SUBSTANCE: invention relates to water supply and can be used in outfitting of artesian wells with hydraulic accumulators and concrete water storage tanks. Besides, it can be used at artesian wells with sealed water towers and metal tanks. Method of prevention of the occurrence of ferrous and ferric iron oxides in artesian well water consists in fitting the sealed head wall to seal the casing against the air oxygen ingress therein. Besides, the cable and water lift pipe are sealed at the sealed head wall inlet.
EFFECT: decreased content of total iron in walls encased by metal pipes to less than 0,3 mg/l to comply with the requirements of the State Standard GOST "Drinking Water".
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
FIELD: oil and gas production.
SUBSTANCE: invention refers to oil and gas industry, notably, to inflated packers. It contains a packer mandrel, a packing element and a swelling material. The packing element is assembled over the packer mandrel; there is a circular gap between the packing element and the mandrel. The material is placed in the circular gap and is designed to capture at least part of medium supplied into the circular gap between the swelling material and the packing element.
EFFECT: facilitates maintaining tightness after expanding regardless of damage or change of conditions in well.
20 cl, 6 dwg
FIELD: oil and gas industry.
SUBSTANCE: device includes a coupling which can expand in radial direction under influence of fluid medium. Coupling is fixed on end members and includes a pair of cylindrical membranes 20, 21 with flexible and elastic wall coaxially inserted one into the other. Fluid medium pressure influences inner membrane 20. Outer membrane 21 is intended to be pressed to the wall of well or pipeline. Between membranes 20, 21 there is at least one annular and fibre construction 5 of increased density, which is formed by many thin and long fibres with high mechanical strength with diametre of 5 mcm to 100 mcm. Fibres attach end members to each other and are wound in a spiral manner around inner membrane 20. Fibre winding angle in relation to longitudinal symmetry axis X-X' is 45° to 60° in end sections and 15° to 30° in central part of that coupling. Fibre winding density decreases in direction from each end to central section of the coupling wall.
EFFECT: decreasing non-uniform distribution of stresses in fibre construction, and preventing extrusion.
13 cl, 23 dwg
FIELD: oil and gas production.
SUBSTANCE: device consists of tubular collar radially expanding under effect of pumped fluid medium. The collar is rigidly connected with end elements at least one of which contains circular cylinder section facing the collar. The said cylinder section is made on half of thickness of a wall of the element forming two circular flanges. A group of through orifices is formed in the wall of the cylinder section, while material of the collar covers both external and internal sides of the said cylinder section passing through orifices and maintaining its integrity.
EFFECT: reliable connection between collar and end element avoiding unsticking or breaking.
7 cl, 10 dwg
SUBSTANCE: invention belongs to the borehole oilfield equipment and, more specifically, to the expanding packer elements. A plate to be used in the expanding packer possesses a corpus-based element, characterized by the length, width and thickness and containing no less than one bearding in it and at least one wedge, going from it, fittings for interconnection with corpus elements of the adjoining plates of the expanding packer and a range of reinforcing elements, located within the corpus element and formed in a shape of web or twisted structure; moreover the expanding packer contains an elastic bladder and a range of plates, located along the bladder and equipped with reinforcing elements at least partially open in order to provide an easy fixing of the expanding packer against the well shaft walls.
EFFECT: protection against outsqueezing, withstanding mechanical overload, control over the packer elements load rate and enhancement of their characteristics, increases the fixing potential with regard to well shaft walls.
FIELD: oil and gas industry.
SUBSTANCE: system for removal of fluid medium from a certain zone of well shaft includes a single packer having external layer expanding in the well shaft across the expansion zone and containing many drain holes in expansion zone and many tubes connected to many drain holes, elastic inflatable balloon located inside external layer and pair of mechanical fastening devices located on opposite ends of external layer and having many turning flow elements connected to many tubes for adaptation to expansion of external layer with elastic inflatable balloon.
EFFECT: improved expansion degrees; higher depression pressure drops; enhanced support of formation in the zone, from which formation fluid media are taken.