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Invention relates to borehole pump units with multisection assemblies. Proposed plant comprises multistage rotary pump 1, inlet module 2, hydraulic protection unit 3, motor 4 with heat exchanger and current feed assembly 5 and borehole telemetry unit 6. It comprises two compensating couplings with upper and lower half-couplings with symmetric four-cam working surfaces and spring-loaded sets of balls. First compensating coupling is fitted in inlet module and can be centred therein by plain bearing composed by cermet sleeves to engage pump shaft with that of hydraulic protection unit. Chamber between upper and lower half-couplings in first compensating coupling is sealed and filled with grease. Second compensating coupling engages the hydraulic protection unit shaft with motor shaft. Said second coupling has threaded adapter on motor side for automatic adjustment of mutual axial displacement of half-couplings at starting the pump plant. |
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Pump plant with borehole liner ac converter-fed motor Invention relates to machine building, particularly, to displacement pumps with linear borehole motor drives. Proposed plant comprises borehole part including pump and borehole linear AC converter-fed motor. Moving part (a runner) can reciprocate. Electronic control unit consists of surface and borehole parts. Borehole part consists of inverter arranged in sealed case at normal internal air pressure. Inverter output is electrically connected with surface part and winding via sealed lead-ins. Inverter control unit is connected with the runner position transducer sensors via extra sealed lead-ins. It comprises runners step counter. Surface unit is composed of input rectifier, single-phase HF regulation inverter and output rectifier, all being connected in series. |
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Input device contains a sedimentation compartment connected to a sub in a pump receiver portion. A U-shaped intake channel is placed in it and its input is placed outside the sedimentation compartment. Below the sedimentation compartment there is a cup with openings in its upper part. The cross-section area between the intake channel and the cup is selected so that the maximum water flow rate in a downward direction in this cross-section can be twice more than the oil floating speed in water. The minimum volume of an inner space between the intake channel and the cup is not less than half of the volume of the liquid received by the pump at suction. The upper end of the input channel is placed at the level of the end of the U-shaped intake channel. Below the cup there are additional similar cups mounted, and their quantity is in direct relation of the pump capacity. The input channel communicates with the lower part of each cup by means of the inlet calibrated port, which can maintain the equal speed from the respective cup to the intake channel. Over the calibrated port there is a filter. Between the sedimentation compartment and the cup the intake channel is equipped with an additional compartment to increase its length. |
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Invention relates to determination of frequency components of damper to be secured to compressor at testing its sound wave length. Proposed method comprises the steps whereat compressor (20) cavity sound spectrum is defined without attachment of said damper to compressor (20). Cavity acoustic wave length is calculated. Damper near nozzle length is defined to calculate, proceeding from cavity acoustic wave length and damper near nozzle length, the frequencies related with damper near nozzle and compressor cavity. Damper near nozzle make the compressor near nozzle when damper is secured to the compressor (20). |
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Rotor of centrifugal compressor Rotor of a centrifugal compressor comprises a shaft with a thrust collar and a runner with its hub being fitted by fitment cylindrical belts and contacting with the thrust collar. The cylindrical belt of the runner hub section adjoining the thrust collar is equipped by a circular projection and the shaft surface is fitted by a groove mating it, the height of the circular projection is defined according to the dependence: h=k×α×RIN×(THR-TCR), where k=0.5±0.1; α - linear expansion factor of runner material, 1/°C; RIN - inner runner radius, mm; THR - temperature of the runner heated prior to fitting onto the shaft, °C; TCR - temperature of the cold runner, °C. |
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Downhole rotary pump stage impeller Proposed impeller comprises closed flow sections 1 at impeller inlet 2 and open flow channels 3 at outlet 4. Open flow channels 3 are provided with [-like vanes 5 with shrouds 6, 7 located at bulges of vanes 5. |
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Invention can be used in production and operation of low-capacity pumps of space rockets. This impeller comprises solid hub, drive disc, cover disc and n vanes. N axial props are arranged around the periphery of impeller to connect said cover disc with drive disc and made integral therewith, each being arranged between two adjacent vanes. Pressure side of every vane and proximate axial prop surface facing said side are composed by every cut-out at one of the discs. Rear side of every vane and proximate axial prop surface facing said side are composed by every cut-out at the other disc. |
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Drop catcher for centrifugal compressor Group of inventions relates to a centrifugal compressor, in particular, to drop catchers to remove liquid from a compressor as well as to the method to improve efficiency of centrifugal compressor performance in gas turbine engines. A device for catching liquid drops set in the compressor impeller comprises the first hole set on the impeller surface and made so that to receiver liquid drops, and a channel set below the said hole and communicating with it by flow. The channel is made so that the liquid drops are led out from the first hole and the compressor impeller. A centrifugal compressor set in a gas turbine engine comprises a centrifugal impeller which includes rotating solid blades each of them having a root part and an end part and providing for air compression in the centrifugal gravitational field, and units for catching the liquid drops. According to the method for improving the efficiency of centrifugal compressor performance by the removal of liquid drops, a liquid drop catching device is installed in the part of the centrifugal impeller effective from the point of view of catching the liquid drops in the place of their collision with the centrifugal impeller; afterwards the liquid drops are caught in the hole of the said device and removed from the centrifugal compressor by being led from the hole to the channel in the said device. |
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Radial flow compressor for humid gas mix separation and method of its fabrication Invention relates to separation of gas mixes. Radial flow compressor comprises at least one stage for separation of fluid and gas phases including inlet guide vane located in impeller case and distributor with straight funnel having the curved outlet section. Hydrophobic and/or super hydrophobic surface ply is located on at least one of said stages for separation of fluid and gas phases. |
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Hydraulic ram comprises feed pipeline, case shaped to air cap with intake valve and hammer valve. This ram comprises open adjusting tank with drain pipe and hammer valve. Second hammer valve is arranged in intake vertical overflow pipe communicating both tanks. Second hammer valve is engaged by float-type articulation-leverage drive arranged inside the tank. Both hammer valves are arranged parallel with feed pipeline. |
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Electric borehole pump motor (versions) Set of inventions relates to borehole pump motors. Borehole pump motor 10 comprises shaft 18, metal sleeve and rotor section 20 engaged with shaft 18 to spin therewith. Motor housing 12 is filled with dielectric lubricant and accommodates shaft 18, sleeve 26, rotor section 20 and stator section 14 coupled therewith. Motor 10 comprises bearing cylindrical housing 28 immersed in said lubricant and having inner cylindrical surface connected with outer cylindrical surface of sleeve 26. Cylindrical housing 28 of the bearing is arranged inside housing 12 with fixed thereto. At least cylindrical surface of sleeve 26 or bearing housing 28 have coating of nickel-boron, its thickness making about 0.00075 inch ±0.00025 inch. |
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Borehole electrically driven pump Invention relates to evacuation of fluid from, mainly, oil strippers. Pump piston is aligned with runner 3 having the sealed crosswise web 6 arranged inside cylindrical cavity of said runner 3. Cylindrical cavity of said runner 3 accommodates hollow rod 7 engaged with the runner cavity inner cylindrical surface via seal assembly 8 arranged at outer surface of said rod 7. Rod 7 interior and runner interior communicated therewith communicate via channel with the pump working chamber 20 communicated with outer pumped medium and outlet pipe via inlet, 11 and discharge, 14, valves, respectively. |
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Borehole electronic unit for borehole electrically driven pump Proposed electronic unit can be used for control over borehole motor. It comprises cylindrical case 1 closed at ends by base 3 and head 2 facing the motor, electronic circuit components arranged in sealed compartment, cable glands for connection of electronic components with motor circuits and plug-in terminal of contacts 7, 9. Said unit comprises chassis 11 of segmental cross-section made of material that features high heat and electric conductance. Chassis 11 is arranged to get in thermal contact with inner surface of case 1. Electronic circuit power components 12, particularly those fitted at the chassis 11 flat surface are electrically connected with cable glands. Joint between case 1 and base 3 and head 2 are sealed to sustain high pressure and to make sealed compartment with base 3, head 2 and case interior. |
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Invention relates to machine building and can be used for fluid lifting from deep waters. Proposed plant comprises displacement pump and borehole linear gated motor with interconnected movable and stationary parts. Motor stator and its movable part, a runner, are configured to allow reciprocation of the latter relative to stator. Motor interior is communicated with ambient medium via filter and with pump interior via seal fitted between rod and housing. Motor stator has lengthwise through channels made in area between winding outer surface and motor housing inner surface to communicate chambers arranged on the stator both end sides. |
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This pump comprises drive shaft, motor, flange, housing composed by three parts and cover composed by intake pipe. Impeller with vanes is fitted on shaft inside said flange, said vanes being directed form housing side to exhaust holes at its side surfaces. Housing first part accommodates the first stage with centrifugal wheel shaped to truncated cone with helical vanes on cover side. At least three grooves are made in wheel flange between two adjacent vanes. Housing second stage accommodates centring antifriction bearing and second stage with swirler displacing in shaft axis to control the clearance between ends of vanes and working chamber walls. Quantity of vanes of the wheel pressure side is 1.2 times larger than that on intake side. Bearing is composed by two aligned ceramic rings, inner one being secured at the shaft by lock ring. Sealing bush in length two times larger than shaft diameter is fitted at housing third part, on shaft at flange side. Intake opening in said cover is composed by inclined diverging channel above second stage working chamber intake hole. |
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Reversible thermomechanical pump for superfluid helium Invention relates to cryogenic engineering and can be used for feed and evacuation of superfluid helium used for cooling of detectors, heaters and control over evaporators. Two heating elements are arranged outside the metal case-tube to control superfluid helium flow magnitude and direction. Reversible thermomechanical pump is composed by steel cylindrical tube filled with compacted powder, two heating elements and helium evacuation-feed tube sealed at one end. Thin steel wall of said tube-case features low heat conductivity, hence, heat flow gets into said case (heat conductance along the wall is minimum). Heat insulation of heating elements is realised by dense winding of low heat conductance Teflon tape on said heaters that has good mechanical properties for use at helium temperatures. |
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Station for transfer and separation of polyphase mix Proposed station is designed to transfer and separate the multiphase mix. Its comprises manifold 1, bore pup units 2, 3, water-jet pumps 4, 5, 6, separator 7, fluid counter 8, drain tank 9, discharge pressure pipe 10, shutoff valves 11-28, check valves 29-35 and safety valve 36. Drain tank 9 is equipped with semisubmersible pump to force fluid to manifold inlet 1. Besides, said rain tanks is communicated via check valve 35 and shutoff valve 28 with fast-release joint 37 to pump fluid to tank-trucks. |
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Plunger pair and metering pump comprises at least one external part of crystal based on aluminium oxide alpha-modification and at least one internal part of crystal based on aluminium oxide alpha-modification, preferably, leucosapphire with working surface roughness Ra2÷5Å. Said surface smoothness is brought about by processing the cylindrical surfaces of part of crystal based on aluminium oxide alpha-modification. This method comprises drilling the preliminary blanks of part of crystal based on aluminium oxide alpha-modification with the help of diamond tool. Three-stage mechanical processing is performed by diamond tool with lubricant-coolants and sequential decreased in abrasive grain size to 125/100 and/or 100/80 mcm. Internal strain is removed from blanks by annealing at muffle furnace. Surface is processed by semisoft or soft grinding wheel or by lap with diamond 5/3 mcm or 1/0 mcm grain on clock oil. Tribochemical finishing of the surface is performed by colloidal SiO2-based composition. |
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Borehole multistage modular pump and pump stage Set of inventions relates to ump production, particularly to borehole multistage centrifugal pumps designed to extract oil from wells. Proposed pump comprises head, base and housing accommodating pump stages. Every said stage comprises polymer impeller with hub and distributor including the barrel with outer sleeve, top disc and axial; bearing made of metal, blades and bottom disc made of polymer. Said housing accommodates radial intermediate bearings with two carbide bushes, one being fitted on pump shaft and another one in bearing housing. Distributor comprises hub made of polymer material. Spacing between intermediate radial bearings with carbide bushes does not exceed 0.5 m. |
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Method of mutual conversion of mechanical energy and potential energy of compressed gas Method of mutual conversion of mechanical energy and potential energy of compressed gas consists in cyclic change of gas volume in above-piston and/or below-piston cavity at reciprocating motion of a piston inside a cylinder. Gas in the said cavity is periodically renewed through gas supply and withdrawal channels. The cylinder and/or the piston are rotated around the axis parallel to the direction of the piston's reciprocating motion. The piston is installed in the cylinder with a minimum radial gap. The cylinder is partially filled by fluid. The action of centrifugal forces provides for the formation of free surface of the fluid. Difference of static fluid pressures in the above-piston and below-piston cavities, provided by the difference of radiuses of the fluid free surface, compensates the gas pressure difference in these cavities. |
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Rotor axial device used as a pump comprises a casing with a cylindrical cavity in it, two cylindrical rotors with outer contact surfaces rotating in it and fixed at one shaft, one central disk, one damper baffle, suction and outlet channels made in the shaft, inlet and outlet holes. The disk is located between the rotors. The baffle is installed so that it can move between the outer contact surfaces of the rotors. The inlet and outlet holes are made on the opposite flat surfaces of the central disk on both sides of the damper baffle. The distance between the outer contact surfaces of the rotors is equal to the length of the damper baffle at all angles of simultaneous rotation of rotors in respect to the axis of the rotor axial device. |
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Lower end of housing 1 accommodates valve assembly 4 with shutoff balls 5 and damper 7. Besides it housing 1 comprises the system of pressure system pistons. First stage piston 8 arranged above damper 7 is composed by the valve with shutoff balls 9. Inductors 12, 13 are arranged inside second and third stage piston bodies 10, 11, respectively. Pistons have axial holes 14 and are separated by chambers 15, 16, 17. Pump incorporates extra inductor 18. Outlet chamber 19 houses extra outlet piston 20. Rod 21 of said extra piston 20 is hollow and recessed into axial hole of extra inductor 18. Radial holes 22 arranged under extra piston 20 are made at outlet chamber sidewalls. Pistons 8, 10, 11 of pressure stages are equipped with pipes 23, their ends being recessed in axial holes of pistons of the next stages. Third stage piston pipe is recessed in axial hole of extra inductor 18. Limiters are arranged in axial holes of pistons 10, 11 and extra coil 18 axial hole to prevent fall pipe out from said holes. Last stage piston pipe interacts with the rod 21 of piston 20. Radial holes 24 have radial holes made at pipe bases. |
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Pump rotor alignment with housing at main line pump unit mid-life repair Proposed method consists in fitting a gaged sleeve onto end seal seats, sleeve having ID for fitting on rotor shaft and OD. Said OD provides a guaranteed clearance with inner bore diameter of end seal chamber. Antifriction bearings are assembled with the stack of radial thrust bearings. Clearance is measured over appliances diameter on both sides to eliminate misalignment by adjustment of shaft position relative to chamber axis and displacement of front and rear bearings by puller bolts. Then impeller blades are relieved. |
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Proposed pump comprises suction opening and pressure valve, working cylinder 2 accommodating the main rotor 10 with at least one ledge 12, its radius being equal to that of cylinder 2. Extra rotor 17 has the recess 18 to accommodate rotor 10 ledge 12. Both rotors 10 and 17 are articulated for timed rotation. Rotors 10, 17 are arranged so that their axes cross while rotor 17 rotational plane is located at 90° to rotational plane of rotor 10. End surface of rotor 17 opposite cylinder 2 is located relative to rotor 10 rotational axis at distance equal to rotor 10 radius. Extra rotor 11 of sixes equal to those of rotor 10 is arranged parallel with the latter inside extra cylinder 3 with end walls, suction opening and pressure valve, and articulated with rotor 10. Ledge 13 of rotor 11 is directed to rotor 10 ledge 12 at 180°. End walls of cylinder 3 have two discharge grooves, one to close suction opening and another one to close the pressure valve. |
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Combination scavenging pump system including getter pump and ion pump Invention relates to pump engineering, particularly, to development of super high vacuum. Proposed system comprises getter pump (120; 220) and ion pump (130; 230). Both pumps (120, 220; 130, 230) are mounted at one flange (111; 211) arranged in opposition at the flange opposite sides so that conductivity of both pumps increases in direction of gas flow sources in vacuum chamber. |
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Invention is related to oil-submersible equipment and may be used for well fluid lifting and well parameters measurement without removal of the pump unit. The pump unit bypass system contains a Y-unit with a plug, and a string of bypass pipes is suspended to one output of the Y-unit by means of a cut-off clutch, connector and nozzles. The pump unit with a submersible pump and submersible motor equipped with a support tube is connected to the second output of the Y-unit through a cut-off clutch and a counterbalance valve. At that the string of bypass pipes and the pump unit are interconnected by protectolisers and a saddle. The connector is of disconnectable type; it consists of two symmetric parts with longitudinal hemicylindrical and prismatic caves. The connector parts are hinged at free ands from the side of the prismatic cave and screws between the caves for the purpose of additional fixture of the bypass pipe string and the pump unit due to cover of the prismatic caves by the walls of the pump unit. The bypass pipe is perforated at the level of the submersible motor. |
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Dual production method from two beds in same well Method includes determination of geologic characteristics for beds, setting of a packer in a well between two beds, running-in of one flow column with an electric motor and drive for two pumps and a stem. At that at running-in the lower pump is placed from the packer at a distance equal to a design dynamic fluid level in the lower bed. Due to the pressure in the below-packer area the product from the lower bed comes to suction of the lower pump and then back through a back-pressure valve (pressure regulator valve) it is fed to a tubular annulus, mixed with the upper bed fluid and pumped by the upper pump to the surface. Head characteristic of each pump can vary depending on geological characteristics of each bed. |
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Protector for hydraulic protection of submerged oil-filled electromotor Protector contains a body 1, a shaft 4 with the lower and upper end seals 6, a support 5 of the shaft 4, nipples, a footstep unit, the upper and lower heads 2 with flanges 3 for connection to the pump and electromotor respectively. The protector contains an impeller 7 of a centrifugal pump mounted on the shaft 4 between the end seal 6 and the flange for connection to the pump. The inner diameter D of the impeller 7 disc 9 faced towards the end seal 6 is bigger than the diameter d of the shaft 4. The outer diameter D1 of the disc 9 is less than the outer diameter D2 of the opposite disc 8 of the impeller 7. Centring of the impeller 7 in regard to the shaft 4 is made along the inner diameter d of the impeller 7. |
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System, device and method for fast configuration of pump displacement Proposed system comprises mixer for low-pressure fluid feed to the pump. Said drive has drive section and hydraulic section with several plungers. It comprises also the actuator to couple drive section with selected partial set of plungers. Besides, this system comprises controller to select said partial set of plungers in compliance with working delivery, working pressure and/or indicator of hydraulic section fault. Besides, said controller feeds instructions to actuator for coupling selected set of plungers with drive section. |
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Invention relates to suspension feed pumps. Proposed system comprises the following components: two high-pressure vessels (12) each including inner resilient chamber, pump feeding water via pipeline (30) into chambers, pipeline (26) to feed suspension from every high-pressure vessel at chamber expansion and control device (160) to feed water in one chamber shortly before full compression of the other chamber and vice versa. Control device (160) can feed preset amount of first fluid into chamber (60) measured with respect to reset reference point at first fluid delivery into chamber (60) via hole (22) for first fluid. This device allows measurement of first fluid volume and feeds preset fluid volume of second fluid into second fluid vessel (192) via second fluid opening (18). |
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Proposed machine comprises stator, rotor and working chamber formed there between. Working chamber is communicated with working medium feed and discharge channels. Working chamber cross-section width equals the difference between maximum and minimum radii of working chamber defined as the distance from machine axis to working chamber outermost point and the distance from the axis to innermost point. Working chamber houses blades and separator engaged with stator and rotor, respectively. Every blade comprises leading edge facing the rotor and arranged at β=5÷20° to meridian plane extending through leading edge centre. Blade cross-section mid line passed through leading edge centre is inclined to said meridian plane at α=5÷60°. Flat leading edge makes a sharp edge between edge plane and blade surface facing the rotor. Edge plane is parallel with the stator cross-section. |
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Fan designed to produce an air flow and comprising an air intake unit (20), an air outlet unit (14), an impeller (64) and a motor (68) intended for the rotation of the impeller to produce the air flow passing from the air intake unit to the air outlet unit. The air outlet unit (14) consists of an inner channel (94) intended to receive the air flow and an escape section (26) intended to release the air flow. The air outlet unit defines the hole (24) through which the air flow escaping the escape section sucks the air from the outside of the fan. The motor (68) comprises a rotor which can rotate with the speed of at least 5000 rpm when used. The air intake unit is placed in the side wall of the base. |
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Sealed axial electrically driven pump unit Proposed pump unit comprises electric drive stator with inlet guide vane and straightener blade. Rotor shaft with impeller runs in bearings at the cover. Cylindrical grooves are made at rotor ends. Recesses and cover cylindrical surfaces make the hydraulically communicated groove seals. |
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Downhole pump unit consists of a wellhead power hydroelectric unit, a lifting string, a submersible pump and submersible hydraulic drive with a sealed stepped plunger. The hydraulic drive with coupled with the power hydroelectric unit using hydraulic channel, and the top part of the plunger step of the large diameter is located in the lifting string. Transition of plunger diameters is in working cavity connected with the hydraulic channel. The step of the small diameter of the plunger is connected with the submersible pump. At the place of the step of the large diameter of the plunger entering cavity of the lifting string there is a heavy displacement fluid, e.g. quicksilver. Below sealing of the smaller diameter of the driving plunger there is a protecting cavity created filled with driving fluid, fed through a calibrated bypass valve. Energy accumulators in form of a spring or a pressure tank may be used. Installation can work with two hydraulic channels without using heavy fluid. There is no contact of mobile elements with pumping out fluid; besides, there are no rod strings. |
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Downhole pump unit consists of a lifting string, a wellhead power hydroelectric unit, and a submersible pump with pumping chamber, with a movable working element. The submersible hydraulic drive with a movable stepped plunger is coupled with the wellhead power hydroelectric unit using two hydraulic channels. The pumping chamber is additionally equipped with a cup, in cavity of which a movable working element is installed, made in form of heavy fluid, e.g. mercury. Heavy fluid occupies maximum capacity of the pumping chamber till the level of the pump's suction valve with the top position of the stepped plunger of the hydraulic drive. The stepped plunger is installed in two isolated sealed cavities with driving fluid, the top one of which is connected to one hydraulic channel, and the bottom one to another. Part of the stepped plunger having large diameter in place of separation of driving cavities and part of the stepped plunger having small diameter in the place of its transition from the top driving cavity into the pumping chamber are sealed. |
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Well bottomhole pump chain drive Chain drive includes a body, an engine and a reduction gear mounted on the base on a single frame. The body encloses a mechanism converting rotational motion into reciprocating and including driving and driven sprockets embraced by closed-link pulling chain. The last one is coupled with a carriage joined with counterbalance installed in guiding rails linked through a coupling element with the rod hanging assembly. It contains a mechanism for rolling away the drive from the well head. The carriage is equipped with tapered bearings, and two carriage axes out of four are made with an eccentric. In addition, the drive includes a connected with the carriage plunger with a clip with cheeks and a jaw larger than the vertical deviation value of one sprocket in respect of another, with the cheek width ensuring plunger stability against distortion at contact with the chain, with a taper rod and a tapered bearing close to the clip of the larger size and far from the clip of the smaller size. Ratio of the jaw width to the cheek width and to the clip thickness is 1:(0.48-0.50):(1.50-1.53), respectively. Axial and bending loads on the structure elements are eliminated. |
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Connection adapter for electrically driven borehole pump system Set of invention relates to mining and can be used in borehole electrically driven pump connection adapters. Proposed system comprises protector, motor section and seals to prevent leaks from protector and motor section during assembly. Seals interact with coupling assembly engaging protector shafts with motor section. Coupling assembly OD increases at the ledge around the coupling assembly. In compliance with one version, seal preventing the leaks from seal assembly that makes the interface around coupling assembly larger-diameter part to be removed at coupling shift so that its smaller diameter part abuts on said seal assembly. Motor section is sealed by another seal assembly including the case surrounding the motor shaft to make a circular space to be selectively filled with deal disc. Seal disc can be displaced inside said case at coupling the shafts by coupling assembly. |
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Diaphragm unit of positive displacement machine Invention relates to machine building, refers to positive displacement machines and is designed to be used at pumping of abrasive, aggressive and other media. A diaphragm unit consists of a rod, a diaphragm and a support. The support is a built-up structure comprising upper and lower segments swivelling on axes fixed by a pusher, connected to each other by guiding bars and covered by segment faceplates increasing the efficiency factor at solution pumping in the course of the segments' movement. A draw bar supports the diaphragm via a faceplate connecting the segments and the pusher. Lip ends of the segments cover the gaps occurring at their movement. The guiding bars serve as locking units for the segments. A dish retainer prevents break of the diaphragm in its middle section at return movement of the rod. Clamping bolts provide for the joint of the central diaphragm section with the dish retainer. The diaphragm periphery is rigidly fixed by a flange. |
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Invention relates to mining and can be used as a drive with the cable connection for simultaneous separate operation of two layers through one downhole with sucker rod pumps. The drive is used to actuate two sucker rod pumps located on different horizons of one downhole in two parallel columns of tubing string. At that two ropes are used, attached to a common traverse, one of which is spanned over one and the other - two rope pulleys. When moving the traverse created by two hydraulic jacks, the rope suspensions make oncoming traffic transmitted to the downhole pumps. |
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Air bleeder with inertial filter in compressor tandem rotor Invention relates to auxiliary air system of radial- and mixed-flow compressor with rotary shaft. Note here that said compressor can compress oxidiser gas. Auxiliary air system comprises oxidiser gas bleeder system arranged in the rotor. |
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Centrifugal compressor impeller Impeller of a centrifugal compressor comprises a rotor disk and blades set on both its sides, the blades set on one side of the rotor disk are shifted circumferentially in relation to the blades set on the other side of the rotor disk by the distance not exceeding the height of blades at the outlet of the impeller. |
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Machine of positive displacement action Machine consists of a cylinder 1 with a differential piston of U-shaped longitudinal section and two cavities: 3-pump one and 4 - compressor one. The inner part of the piston 2 is mating the outer surface of a crosshead lead-in segment 5 of U-shaped longitudinal section, the crosshead 6 is fitted by the inner lead-in segment along which the crosshead itself is sliding, the crosshead is hingedly coupled to a connecting rod 7 of a crank drive of the machine and coupled to the piston 2 via a rod 8. The piston 2 is fitted by a piston seal 9, and the crosshead lead-in 5 - by a seal 10. The inner cavity 12 of the piston 2 is connected with the suction line by a channel 11. Back pressure gas valves 13 and 14 are used to arrange the operation of the compressor cavity 4, fluid valves of the same type 15 and 16 - to arrange the operation of the pump cavity 3. U-shaped design of the piston and the crosshead lead-in provides for the creation of long seals at short length of the cylinder and piston group. |
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Two-cycle centrifugal compressor Two-cycle centrifugal compressor comprises a casing; a stator of the first and second sections, an intersection baffle with labyrinth sealing, a rotor with runners and dummy piston with the latter being a stepped one, are set inside the casing. The intersection cavity of the dummy piston is connected to the discharge chamber of the second section in the two-cycle compressor via a channel in the intersection baffle and inlet ports in the bush of the stepped labyrinth sealing; the ports in the bush of the stepped labyrinth sealing are made tangentially or at an angle to the inner ring surface of the sealing and are directed to the side opposite to the direction of the swirling flow rotation; ribs are set on the inner end face walls of the bush next to the inlet sealing ports, crescent recesses and ridges are provided on the inner surface of the sealing's bush. |
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Turbopump comprises housing (4) with working chamber (9), shaft (7) with external drive, impeller fitted on shaft (7) and aligned therewith inside said chamber (9). Impeller comprises first and second discs (1, 2) aligned with axial clearance there between and having inlet holes (6) at central area. Impeller has first inlet of fluid (5) for axial feed to axial clearance between said first and second discs (1, 2) via inlet of first disc (1). Impeller has second inlet of fluid for axial feed to axial clearance between said first and second discs (1, 2) via inlet (6) of second disc (2). Besides, it has outlet for discharge of first and second fluids from working chamber (9) periphery. Said impeller comprises extra mid solid disc (3) fitted aligned between discs (1, 2) and with clearance there between and discs (1, 2). OD of mid disc (3) is smaller than OD of discs (1, 2) and larger than that of outer circle on inlets (6) of discs (1, 2). |
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Multistage immersion vibratory pump with axial connection Device housing consists in section cases 1, 2. Pump section has inlet valve 3 with its own body. Disc piston 5 is fitted at rod 6 engaged with electromagnet armature 7 integrated with vibrator. Plate spring 9 is used as the armature return mechanism arranged in oil-filled chamber 10 to compensate for external pressure. Pump sections are interconnected by pipelines 11. Upper outlet part of pipeline 11 features the shape of diffuser 12 accommodating the inlet of inlet valve of the next pump section. Inlet valve of every section has intrinsic body threaded to pump section housing to allow the suction chamber volume. Seat with ball is fitted in the valve body. Electromagnet windings and control signals are fed via multiple-strand armoured cable 17. |
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Turbomachine diffuser-distributor assembly Diffuser-distributor assembly intended to be installed at a compressor output in a turbine comprises a distributor. The distributor includes two, in essence, cylindrical walls: a radial inner one and a radial outer one. The walls are connected by radial blades. The distributor walls are extended to the downstream part beyond the radial blades. Radial clearance between the walls is circumferentially variable downstream the blades so that in essence to be minimal in the blades extension and maximal between the blades. The clearance is circumferentially variable up to the downstream end of the downstream walls of the distributor. Subject of the invention is also a turbomachine such as turbojet engine, turboprop engine or helicopter engine comprising the assembly described above. |
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Proposed pump relates to dynamic pump units for transfer of high-thickness aggressive inflammable fluids containing solid and soft inclusions. This pump comprises housing with tangential bend with fluid feed and exhaust pipes, shaft with discs that feature wavy surface. Note here that one or more discs with said wavy surface feature radial arrangement of waves of variable radius increasing from wavy disc centre to its periphery. |
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Stage of downhole multistage rotary pump Proposed stage comprises impeller 2 with bush 3 and stator blade 7 composed by bucket 1, top disc 9 with axial bearing 13, bottom disc 11 and blades 10. Top disc 9 with axial bearing 13 is made integral with bucket 1 Note here that said bucket 1 is made from polymer material accommodating metallic carcass 5 that ensures stiffness of said bucket 1. |
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Method of fluid flow rate measurement Method involves measurement of rotation speed of a sensor and further processing of results. The speed measurements are carried out for at least two sensors rotating at different levels, the sensors are chosen so that to have different size and/or weight. |
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Turbo compressor with controlled supercharge Ice offgas-driven turbocompressor comprises housing to accommodate turbine wheel fixed with compressor first stage wheel shaft, compressor running in bearings. Besides, it includes extra compressor second stage wheel with arched blades. Compressor second stage shaft is engaged via overrunning coupling with compressor first stage wheel shaft. On the other side, it is engaged via second overrunning coupling with adjustable-control motor shaft. |
Another patent 2513121.