Downhole hydraulic electric power station hydraulic unit

FIELD: engines and pumps.

SUBSTANCE: invention relates to power engineering and can be used for electric power generation. Proposed hydraulic unit comprises hydraulic turbine coupled with electric generator. Note here that hydraulic turbine represents turbodrill 10, electric generator represents electric drill 14 with their housings 17 and 18 integrated via sub 19 and armature-spindle 15 of electric drill 14 with rotor of turbodrill 10. Electric drill 14 is arranged above turbodrill 10. Housing 17, of electric drill 14 is coupled with lower end of drilling ripe string, the string upper end being fixed at the well mouth. Sub 19 has holes 20 communicating the well with hydraulic inlet of turbodrill 10 and hydraulic channel of armature-spindle 15 of electric drill 14. Well lower end represents its bottom, while well lock-down assembly represents bottom support jointed with lower part of housing 18 of turbodrill 10 arranged to take hydraulic unit forces and to turn hydraulic unit through. Note that well walls can also make borehole bearing element. Aforesaid lock-down assembly represents either mechanical or hydraulic wall packer jointed to lower part of housing 18 of turbodrill 10.

EFFECT: higher reliability and simplified design.

4 dwg

 

The invention relates to energy and can be used for electricity production and organisation of electricity supply in areas that have the necessary conditions to work well hydropower plants, including for the implementation of decentralized Autonomous power supply, remote from centralized utilities consumers. Thus, the claimed unit is intended for use in downhole hydroelectric power.

Known hydropower (Karelin VA and other Hydroelectric station. Edited by Prof. Karelin VA and Krivchenko GN. M, Energoatomizdat, 1987). It includes a water source such as a river, dam, nutrient capacity, is connected with the conduit, the lower end of which is connected to the area of the drain, located below the point of the message, the upper end of the conduit with the nourishing capacity. In the lower part of conduit installed machine hydraulic - turbine, the shaft of which is connected to the rotor of the generator, forming a combination of the unit. Hydraulic energy of the water stream is converted by the hydraulic unit into electrical energy, which is supplied to the electricity consumer. Known hydropower plant, because it is on the surface, is not constrained in size, i.e. in its design n the t a severe limitation in dimensions, incl. hydraulic unit. Moreover, in the construction, for example in bearings provided labyrinth seal (overall), and the generator is located in a separate room under normal, as a rule, the conditions.

Known downhole hydroelectric power plant (Generation of electricity during the injection of a denste fluid into a subterranean formation. Patent US 4132269 And CL. EV 43/20, F03G 7/04, publ. 02.01.1979,) using the similar principle, the conduit in which is the borehole and the hydraulic unit can be located at great depths.

In the wells hydroelectric power to its unit imposed more stringent requirements on the conditions of its operation. In particular, this requirement should be included: the need to work, including electric, water (liquid); work with small dimensions - diameter 164-290 mm; operation at high hydrostatic pressures up to 30-40 MPa or more; and when exposed to abrasive inclusions, commonly found in underground water used as source water for the operation of the downhole unit hydroelectric station, then SHES.

The disadvantage of this borehole hydroelectric power is that its installation and subsequent operation are carried out with the use of an auxiliary mining, that is, it is not adapted to Pro is the ECCA drilling and is not shared with operations, carried out during the production of the drilling process. This complicates the use of downhole hydroelectric power and its units, especially at great depths, and degrades the technical-economic indicators of its use.

Hydroelectric known well hydroelasticity (application for invention "downhole Unit hydroelectric station", No. 2006128649 from 02.11.2006, F03B 13/06, F03B 13/10, Rospatent's decision on granting a patent for invention dated 21.12.2007,) including a turbine connected to a generator installed in the borehole, the cable connecting the generator on the surface with electroprecipitation, in which the turbine is a mud motor, a generator - electric drill, the mud motor and the drill is coupled by connecting their bodies through the sub and the armature-spindle electropura with the rotor of the turbo-drill, the drill is located above the mud motor, the casing of the electric drill is connected with the lower end of the tubing for electronorte, the upper end of which is mounted on the wellhead, for example, through the rotary table and drawworks or with the Jack, which has segments of cables and their contact connection, which represents the electric line of an electric drill (electric) electroprecipitation, in the sub made hole is, informing the borehole with a hydraulic input of the mud motor and a hydraulic channel armature-spindle drill, site recording, interacting with the supporting element is well adopted for the prototype. The lack of downhole unit hydroelectric adopted as a prototype, is the fact that the supporting elements wells, interacts with the host fixation, are both the bottom and the walls of the well. In particular, its node fixation... "includes a stop face, the latch levers and the thrust levers, sliding elements are mounted for movement on the cone stops downhole, acting on the levers of the latch, causing their rejection to the walls of the hole.... It restricts the conditions for its application, and at shallow depths (minor length of the drill string) complicates its use.

Regarding the limitations of the conditions of use of the prototype. Work site of recording conditions, when the bottom hole is removed from the unit, for example, when multiple zones absorption located at different depths in the well above the bottom, and in which the hydraulic unit is installed above the roof of each of them should turn to practice, not possible. In such conditions, the site of fixation (the prototype) due to the lack of the face near the unit will not function and this is reflected in the deterioration of the reliability.

In such circumstances there is a need in the node record, which would interact with the borehole wall as a support element.

Regarding the complexity of the application prototype at small depths of installation of the unit and at shallow depths in the well. The site of fixation of the prototype is a special device, including interaction with the drillstring, the mechanical relationship with him, adjustment and is relatively complex.

At the same time, with little depth of wells and the installation of the unit the lower end of the drill string downhole hydroelectric twisted at a slight angle, and stabilization of the column - reduction of torsional deformation of the bottom of the column of pipes and their vibrations - the actual unit (Lacina L.A. Work the drill string. M., Nedra, 1979) can be achieved by installation of loading the column face of the support element, and the need for measures to prevent twisting of the column and its vibration is absent. The role of node capture can successfully perform downhole loaded with a weight (or part of) the tubing downhole bearing.

The technical result, which is aimed by the invention is a device - borehole hydraulic unit with a higher on what Einasto work in a remote location from the borehole bottom and a simpler design with shallow wells and the installation location of your unit.

This technical result is achieved by the fact that in the known unit borehole hydroelectric adopted as the prototype, including a turbine connected to a generator installed in the borehole, the cable from the load-carrying elements and the contact connections mounted on the brackets connecting the generator on the surface with electroprecipitation, in which the turbine is a mud motor, a generator - electric drill and site recording, interacting with the supporting element of the well, the mud motor and the drill is coupled by connecting their bodies through the sub and the armature-spindle electropura with the rotor of the mud motor and the drill is located above the mud motor, the casing of the electric drill is connected with the lower end the tubing for electronorte, the upper end of which is mounted on the wellhead, for example, through the rotary table and drawworks or with the Jack, which has segments of cables and their contact connection, which represents the electric line of an electric drill with electroprecipitation, and in the sub holes, indicating the well with a hydraulic input of the mud motor and a hydraulic channel armature-spindle drill, a support element well is it for the Oh, and node capture is connected with the lower part of the body of the downhole mud motor bearing, made with the possibility of perception of the load unit and simultaneously turning or supporting element of the wells are its walls, and site recording made in the form of mechanical or hydraulic packer connected to the lower part of the casing of the turbo-drill, for example mechanical packer for well cementing.

In the downhole unit hydro as downhole supports can be used wastewater arms a bit.

The features of the proposed unit borehole hydroelectric help you to achieve before the invention of the. Namely, the execution of node capture as connected to the housing of the downhole mud motor bearing, made with the possibility of perception of the load unit borehole hydroelectric and simultaneous turning, for example, spent on weapons and roller bit, allows you to use the unit not in deep wells, without special downhole nodes fixation, and to apply for this conventional roller bit (used for weaponry or without rock cutting inserts). This simplifies the design of the unit. In addition, the host is running, fixing in VI is e mechanical or hydraulic packer, connected to the casing of the turbo-drill, for example mechanical packer for well cementing, allowing you to use it, due to the fact that the supporting element fixing node are the walls of the well under conditions remote from the borehole bottom position of the unit. This expanded conditions of use of the downhole unit (almost any depth point wells), and performance is the most attractive.

Figure 1-4 shows as an example the scheme of the proposed unit borehole hydroelectric, further SGAS. Figure 1 is a diagram of the unit SGAS in the well with a downhole support in the form of a 3-roller bit (without rock cutting inserts). Figure 2 is a diagram of the fixing unit of the unit SGAS with downhole support in the form of odnochastichnogo bit (without rock cutting inserts). Figure 3 shows a diagram of the unit SGAS in the well with a downhole lock in the form of a mechanical packer for plugging. Figure 4 is a diagram of the fixing unit hydraulic unit in the form of a mechanical packer for plugging in a working (fixed in the borehole position.

Figure 1-4 introduced the following notation: 1 - borehole; 2 - aquifer interval, perebranny well; 3 - water from a surface source of water, held up wells is; 4 - zone flow (absorption), to which the well was drilled; 5 - second absorption zone; 6 - overlapped pipe; 7 - water in the borehole; 8 - dynamic water level in the well; 9 - latch surface water source; 10 - turbo-drill wells turbine); 11 - stator vanes turbodrill; 12 - blade rotor of the mud motor; 13 - fluid channel turbodrill (mechanical-hydraulic coupling of the blades of the stator and rotor); 14 - the drill (downhole motor - generator); 15 - anchor-spindle drill; 16 - hollow (hydraulic) channel in the anchor spindle; 17 - the case of the electric drill; 18-the case of the turbodrill; 19 - second sub connecting 17 and 18; 20 - hole (perforation) in the sub 19; 21 - centering spring; 22 - the third sub; 23 - trehalose bit; 24 - tapered threaded connection; 25 - channel flush fluid; 26 - gland nut; 27 - spring; 28 - Bush; 29 - Tsang; 30 - tube; 31 - coupling; 32 - nipple; 33 - directing ribs; 34 - tube; 35 - screw; 36 - sealing element; 37 - cone; 38 - pressure flange; 39 - resistant die; 40 - section; 41 - pin; 42 - bearing; 43 - roller cutter; 44 - the first sub; 45 - drill pipe; 46 - cable; 47 - coupling connection wire; 48 - bracket pin connector; 49 - pin cable connector; 50, 51 contacts cable; 52 - electroprecipitation-shaper; 53 - lock drill string is and the wellhead.

To generate electricity using the drill string to electrophorese equipped with a special cable when connecting the tubes with the unit at the bottom of the drilled well hydropower purposes, the design of the unit and downhole support in the form of 3x-roller bit is shown in figure 1, and as odnochastichnogo bit - 2. The diameter of the drilled hole is 190 mm Hole drilled to the absorption zone 4 (well of peravurani the absorption zone below her soles on 2 meters). In the process of drilling its peleburan aquifer interval 2, which tested drillstring equipped with a filter for later use of water for the formation of hydropower flow in a borehole (hereinafter SGAP). Borehole flow measurements (Ivashev L.M. Fighting acquisitions drilling fluid during the drilling of exploration wells. - M.: Nedra, 1982) perebeinos aquifer interval defined by the position of its boundaries and flow rate, which amounted Q=0.01 m3/c.

For the formation of the desired power SHIP to her mouth water supply 3 connected to the well water from a surface source, for controlling the flow of which is provided by the valve 9. The extra expense of surface source to generate proposed borehole, gijoe what ectrostatic electric power, equal to N=65 kW, is also Q=0.01 m3/stakim way, the total flow of water generated by SHEP is QΣ=0,02 m3/s Streams of water from the water pipe 3 and from the water-bearing interval 2 arrives in the well and moving in the area of its flow - the absorption zone, forming CHAP. Well it is the dynamic level of pressure Hbottomsits value determined for the wells amounted to 450 meters Downhole flow measurements checked and confirmed that water leaks in the interval from Hbottomsto the place of installation of the unit no. Hydraulic capacity determined according to a known ratio (Karelin VA and other Hydroelectric station. Edited by Prof. Karelin VA and Krivchenko G.P. M., Energoatomizdat, 1987), formed SHEP, after the substitution of the relevant values are:

N=ρ·q·Hbottoms·QΣwhere

N - hydraulic power generated in the well CHAP, W;

ρ is water density, kg/m3;

q is the acceleration of gravity, m/s2;

NDN - dynamic level pressure (exceeding the dynamic level in working well) above the unit, m;

QΣ- the total flow of SHEP in cross section at the depth of installation of the unit, m3/s

For this example: ρ=103kg/m3; q=9.8 m/s2; NDN =450 m; QΣ=0.02 m3/s After substitution in the form (1) we obtain:

N=103kg3/m3·9.8 m/s2·450 m·0.02 m3=88200 W=88,2 kW.

Taking the achievable efficiency of the existing unit drilling equipment, equal to η=(0,75-0,85), we can say that using it for this example in the well can be produced formed in it SHIP with hydraulic power equal 88,2 kW, electricity with a capacity of 65 kW.

For the implementation of electricity generation in the hole it goes down the drillstring, the composition is similar intended for electronorte (Fomenko FN. Electric drills for drilling oil and gas wells. M, 1958). Before that, the mud motor 10 and the drill 14 is coupled, while the drill is installed above the mud motor. Their housing 18 and 17 are connected to the second sub 19, in which holes 20 and through which the inlet of the hydraulic channel of the mud motor 10 is communicated with the hole. Through them has a message with the bore and the cavity (fluid channel) 16 of the armature-spindle 15 of the drill 14. Anchor-spindle drill 15 is connected to the rotor of the mud motor 10. The mud motor 10 in the lower part of its body 18 through the third sub 22 with a channel for water to secure the site of fixation, representing trehalose bit without rocks the destructive inserts in milling cutters 43 (spent or used on the arms a bit, but with preserved bearings). Bit 23 is mounted in the third sub 22 by threaded connection 24. The roller bit has three sections 40 with the pins 41, which are mounted cone 43 with bearings 42.

To the first sub 44 screwed on the bottom tube of the drill string through the thread on the drill 14, is screwed on the assembled unit. Mounted on the pipe unit is lowered into the well on a string of drill pipe are known in the drilling technology using a winch for pulling-lifting the drill and pipe turning machine driver.

Thus, the mud motor 10 in the lower part is connected to the node record, and in the upper part - with electric drill 14 through the connection of their buildings the second sub 19 with the slots 20. In the proposed device is applied is used for drilling deep wells turbodrill type TSE-6 5/8"diameter 172 mm, a rotation speed of 685-1and with the number of steps in the section, sufficient to provide the desired power output of 77 kW at a flow rate of flow of water through it, equal to 20 l/s (Fomenko FN. Electric drills for drilling oil and gas wells. M, 1958). The electric drill type e 164-8 - 14 designed for electrophorese deep wells, when rotation of its rotor can operate in the mode generator (Gresov ISI other Turbine drilling deep wells. The subsoil, M., 1967, Fomenko FN. Electric drills for drilling oil and gas wells. M, 1958). It is adapted for use in downhole conditions - performed oil and this allows him to work in the downhole fluid, including water containing chemicals and abrasive particles, at high hydrostatic pressures. For this example the selected drill type A-8 with an outer diameter of 164 mm, the rotational speed of 685-1and develop capacity of 65 kW.

With little depth of installation of the unit may occur when the unit twist of the lower end of the drill string slightly. Thanks roller cutter bit (host record)loaded weight of the pipe string or part of it, is turning the bottom of the column pipe and the hydraulic unit on this small angle and its stable state (no vibration) when the rotor of the mud motor with a nominal speed (Lacina L.A. Work the drill string. M., Nedra, 1979). This ensures a safe operation of the unit with the technical simplicity of its implementation. Similar arguments for the benefits of the proposed unit and its variants, involving the use of odnochastichnogo bit diagram of the fixing unit shown in figure 2.

In short the us upper part of the drill 14 (hydraulic unit) is screwed on the first sub 44, internal thread connected with the lower drill pipe 45. To the downhole drill string includes a drill pipe (45), United couplings connection 47. In each clutch installed brackets 48 pin connection 48 of the cable 46. When connecting couplings 47 drill pipe automatically connect the installed pin connection cable. This provides an isolated line, connected through sealed connectors, with the electric drill. At the exit of the drill pipe, the cable 46 is connected to electroprecipitation - driver signal 52. The cable can be two -, three-core or stranded (Fomenko F.M. Drilling the drill. M., Nedra, 1974).

The cable 46 is used specialized used in the implementation of electronorte, It is adapted for use in downhole conditions: includes load-carrying elements, contact connectors 48, mounted on brackets 48 and maintains the emerging efforts (cargo) in the cable when its great length (for deep wells and large depth of installation of unit); works reliably in moving water, including those containing abrasive particles; it is fitted with a sealed special pin connections for joining individual lengths of cable (pipe).

About the launched drilling string in the specified layout using standard drilling equipment - drawworks, pipe turning machine driver and tower.

When putting on the face (figure 1) roller cone bits perceived load the tubing or parts.

The top of the drill string at the wellhead is attached by means of a rotary table of the drilling rig, and the necessary force on the hydraulic unit is created by the weight of the drill string, adjustable by means of a winch (Shamshev F.A., Cockroaches Sungurov B.B. and other Technology and engineering exploration drilling. M., Nedra, 1983, str). This reactive torque produced when the unit is perceived rotary table, which is fixed to the upper end of the drill pipe string.

On the surface of the cable from the unit connected to electropneumatically - shaper signal 52.

Springs 21 are designed to center the drill 14 in the well.

When the well depth is considerable, and the unit is installed at a great distance from the borehole bottom (figure 3), for fixing the lower end of the pipe used for mechanical (or hydraulic) packer, which is intended for the perception of the reactive torque from the hydraulic unit (share determined by the twisting of the drill string by passing it to the walls of the well (the reference element). It is connected through the third sub 22, having a tapered thread, with case turn the drill 10. Mechanical packer consists of the following parts: case packer, performed by the nozzles 30 and 34 with a coupling 31 with the nipple 32 with left-hand thread and the guide ribs 33; fixing the site, including the collet 29, thrust plate 39 and cone 37; rubber sealing element 36 with pressure flange 38.

Running the unit in SHES as follows.

Water from an underground aquifer interval 2 is fed into the borehole 1. Open valve 9 and direct the flow of water from a surface source into the borehole. Water from the springs of water enters the borehole, while it is the dynamic level and the appropriate level of pressure Hbottoms=450 m, and the water from it in a continuous stream moves with a total flow rate equal to 0.02 m3/zone flow (absorption) 4. Formed SHIP moves along the circular channel of the well to the zone of flow 4 and the holes 20 is fed to the blades 11 and 12 of the mud motor 10, causing rotation of its rotor. From the output of the turbo-drill 10 water channel, the third in the sub 22, and then through the channels in the roller bit is moving in the absorption zone 4 (zone flow). The rotation of the rotor of the mud motor is transmitted to the armature-spindle drill 14 (electric generator)that is connected to the rotor of the mud motor.

When the unit its reactive moment perceived the drillstring, the upper end of which C is established at the wellhead in the rotary table (sometimes using the drawworks). However, the lower end of the tubing due to the deformation of the torsion pipe rotates at a certain angle. At small depths, this angle is negligible. When the bottom of the drill string touches the bottom of a well: using the loaded weight of the drill string (or its portion) of a roller bit without rock cutting inserts in the milling cutters, the work of a column is stabilized (Lacina L.A. Work the drill string. M., Nedra, 1979) and the vibration of the bottom of the tower is missing. The reliability of the unit is maintained, and this is achieved simply by using a commercially available mnogochastichnogo (figure 1) or odnochastichnogo (2) of the bit, and the lack of execution when any adjustments.

In cases where the unit is installed at a considerable distance from the well bottom to the body of the turbodrill with its bottom side is attached to the site of fixation in the form of mechanical (or hydraulic) packer, which is shown in figure 3, and the circuit node fixation in its working position (fixed in the hole) - figure 4.

The interval of the well to set the packer must be submitted monolithic rocks that do not have cavities. The third sub 22 turbodrill 10 unit connected to the packer. Then its on drill pipe is lowered into the well to a few meters in the higher zone of absorption. By lifting the tubing resistant die 39 cut into the walls of the well and the packer is fixed in the borehole (Rudenko A.P. Plugging and cementing of wells in diamond drilling. Leningrad, Nedra, Leningrad branch, str-120), locking in the hole on its side, the bottom of the column pipe unit. This fixing is achieved by preventing twisting of the bottom of the column pipe and the emergence of possible vibrations of the unit when it is installed at a considerable distance from the borehole bottom. The stabilisation unit in the well makes it work more reliable under these conditions. As node capture can be used a device similar in principle considered a mechanical packer is an inflatable packer used in exploration drilling (Kozlovsky E.A., Kurdish VG, Mursalov BV and other Reference engineer on drilling exploration wells: In 2 volumes. Under the editorship of Prof. Eaacatalog. - volume 1, a - M., Nedra, 1984, str-355).

The hydraulic capacity of the stream of water in the well is equal to 88,2 kW, hydraulic unit is converted into electrical power in the form of electric current on the cable 46 is transmitted to the surface and enters electroprecipitation-shaper signal 52. In it, the energy is converted and is formed by taking the parameters regulated but the normative documentation (GOST 13109-97. Standards power quality in electrical systems General purpose. M., publishing house of standards, 1996).

From electropneumatically - shaper signal 52 electricity regulated quality and the required power values equal to 65 kW produced by the downhole hydroelectric power plant with the use of the proposed unit is distributed and sent to the consumers.

In the absence of the drawworks in cases where the weight of the drill string exceeds the permissible load on the turbine and downhole motor-generator, to reduce it can be used disposable device, for example, the Jack is connected with the upper end of the drill string. If necessary, it creates an unloading force is removed the load of the weight of the drill string to the desired level.

Application of known mud motor and drill through to mount on the implementation of the fixation of their stators in the hole or bearing in the bottom for the subsequent generation downhole hydroelectric power station, and transfer the generated electricity on the surface from the bottom using the proposed sites fixation was made possible thanks detected by the author of the signs of the claimed invention, aimed at the achievement of the required technical the ski result.

The use of the proposed unit allows you to simplify its design and its implementation at small depths of its installation, and also to expand the conditions for its application, in particular when significant removal of the unit from the bottom of the borehole, and thus improve its technical, operational capabilities, and technical and economic performance of the application.

The suitability of the proposed unit to the drilling process, sovmestimosti operation installation and operation with the operations of the drilling process allow its installation and operation with minimal cost.

It should be noted that to convert various hydraulic capacity in the hole in the electric power SGAS to generate variants of units can be used in the claimed solution of various turbodrills and multiple layout as well as different (power and diameters).

The downhole unit hydroelectric containing a water turbine connected to a generator installed in the borehole, the cable from the load-carrying elements and pin connectors that are installed on brackets connecting the generator on the surface with electroprecipitation, in which the turbine is a mud motor, a generator - electric drill and the node is oxirane, interacting with the supporting element of the well, the mud motor and the drill is coupled by connecting their bodies through the sub and the armature-spindle drill with a rotor of the mud motor and the drill is located above the mud motor, the casing of the electric drill is connected with the lower end of the tubing to electrophorese, the upper end of which is mounted on the wellhead, for example, through the rotary table and drawworks or with the Jack, which has segments of cables and their contact connection, which represents the electric line of an electric drill with electroprecipitation, and in the sub holes, indicating the well with a hydraulic input of the mud motor and a hydraulic channel anchors-spindle drill, a support element well is her face, and node capture is connected with the lower part of the body of the downhole mud motor bearing, made with the possibility of perception of the load unit and the simultaneous turning or supporting element of the wells are its walls, and site recording made in the form of mechanical or hydraulic packer connected to the lower part of the casing of the turbo-drill, for example mechanical packer for well cementing.



 

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3 dwg

FIELD: electrical power engineering.

SUBSTANCE: invention relates to power generation and can be used in constructing low pressure river, tidal or wind power installations. A three-phase electric generator is put between orthogonal turbines. The orthogonal turbines have a common fixed axis. The electric generator is provided with at least one two-way action inductor. The inductor or inductors are immovably attached on arms in a circular direction using frames mounted on the axis. The magnetic core and windings of each inductor are put on a separate arm. The latter is semi-pivotally connected to the frame with possibility of axial displacement about the orthogonal turbines. Adjacent phase windings of each inductor of the electric generator intersect crosswise, creating electromagnetic fields, propagating in opposite directions at different sides of the inductor and the latter face different turbines. Electric power cables from the inductors are brought out on elements of the fixed frame through the hollow fixed axis of the power generating unit.

EFFECT: invention increases reliability of operation of power installations with orthogonal turbines by simplifying design of the power generating unit, as well as more efficient use of the energy of water or air medium.

4 cl, 5 dwg

FIELD: power engineering.

SUBSTANCE: invention refers to measuring methods of turbine flow rate of river-run hydraulic power plants. The method is meant for determining water volume flow rate of turbines of low-pressure hydraulic units with reinforced concrete spiral chambers of trapezoidal cross-section with partial angle of contact and stators made in the form of columns. At that, the columns are combined with chords from above and from below. The method consists in measuring average flow velocity by using acoustic method and determining water volume rate as per the measured velocity value and constant flow coefficient. Acoustic beam is formed with acoustic converters. Flow coefficient is determined at power tests performed at a certain site. As per the first version of the invention, one of acoustic converters is installed on upper or lower belt of the stator, escaping stator column. At that, the second acoustic converter is installed on the spiral chamber wall in horizontal plane or at an angle thereto. As per the second version of the invention, acoustic beam reflector is installed on upper or lower belt of the stator. Both acoustic converters are installed on the spiral chamber wall. At that, one branch of acoustic beam cut off with the reflector is routed in plan at an angle of installation of stator columns. The second branch of the beam is routed in plan at an angle of 90° to the first one.

EFFECT: invention allows providing high measuring accuracy of turbine flow rate of river-run hydraulic power plants and reliability of the measuring system allowing to perform continuous operating control of flow rate.

4 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: hydraulic unit of borehole hydraulic power plant includes hydraulic turbine that is connected to electric generator, which are installed in borehole, electric cable that connects electric generator on the surface with electric converter. Hydraulic turbine is turbodrill, electric generator is electric drill, which are unitised and connected by means of common casing with slots. To bottom part of casing fixing unit is connected, which includes bottom-hole thrust block, fixing unit levers and thrust levers, the sliding elements of which are installed with the possibility of movement along bottom-hole thrust block cone, thus affecting fixing element levers, causing their divergence to borehole walls. Hydraulic unit is equipped with unloading device, for instance, jack that is connected with top end of boring column.

EFFECT: operable device for power generation by borehole hydraulic power plant and avoidance of expenses for development of borehole hydraulic unit.

2 dwg

FIELD: power engineering.

SUBSTANCE: proposed plant is designed for converting energy of water flows into electric energy. Hydraulic power-generating plant contains at least two turbine water conduits arranged horizontally one over the other, generator installed over turbine water conduits, and orthogonal turbines arranged in water conduits whose shafts are installed vertically in bearing supports. Process spaces are formed in walls of turbine water conduits being sealed by detachable partitions. Said spaces accommodate bearing supports and connecting members mechanically coupling turbine shafts with each other and with shaft of generator. Bearing supports can be fastened in detachable watertight partitions. Plant can be furnished with at least two groups of turbine water conduits arranged one over the other horizontally along head front. Plant can be furnished with watertight communication channels designed for communication of process spaces with operating well of hydroelectric station.

EFFECT: provision of conditions for convenient mounting, demounting and servicing of equipment at reduced specific capital outlays.

4 cl, 3 dwg

The invention relates to the field of hydropower and can be used to regulate and maintain a stable hydrological, mineralogical and thermal regimes of reservoirs created by natural geological structure of the terrain, by pumping fluid from the reservoirs with a different arrangement of the levels of liquid in them, as well as to use the energy of the fluid in various fields of power generation to compensate for the energy required for pumping the fluid, and the fluid itself on different economic needs

The invention relates to hydropower and is designed to regulate and maintain a stable mineralogical composition of the reservoirs by pumping fluid from the reservoirs with a different arrangement of the levels of liquid in them, as well as for the energy of the pumped fluid to drive vehicles and electricity generation

FIELD: power engineering.

SUBSTANCE: proposed plant is designed for converting energy of water flows into electric energy. Hydraulic power-generating plant contains at least two turbine water conduits arranged horizontally one over the other, generator installed over turbine water conduits, and orthogonal turbines arranged in water conduits whose shafts are installed vertically in bearing supports. Process spaces are formed in walls of turbine water conduits being sealed by detachable partitions. Said spaces accommodate bearing supports and connecting members mechanically coupling turbine shafts with each other and with shaft of generator. Bearing supports can be fastened in detachable watertight partitions. Plant can be furnished with at least two groups of turbine water conduits arranged one over the other horizontally along head front. Plant can be furnished with watertight communication channels designed for communication of process spaces with operating well of hydroelectric station.

EFFECT: provision of conditions for convenient mounting, demounting and servicing of equipment at reduced specific capital outlays.

4 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: hydraulic unit of borehole hydraulic power plant includes hydraulic turbine that is connected to electric generator, which are installed in borehole, electric cable that connects electric generator on the surface with electric converter. Hydraulic turbine is turbodrill, electric generator is electric drill, which are unitised and connected by means of common casing with slots. To bottom part of casing fixing unit is connected, which includes bottom-hole thrust block, fixing unit levers and thrust levers, the sliding elements of which are installed with the possibility of movement along bottom-hole thrust block cone, thus affecting fixing element levers, causing their divergence to borehole walls. Hydraulic unit is equipped with unloading device, for instance, jack that is connected with top end of boring column.

EFFECT: operable device for power generation by borehole hydraulic power plant and avoidance of expenses for development of borehole hydraulic unit.

2 dwg

FIELD: power engineering.

SUBSTANCE: invention refers to measuring methods of turbine flow rate of river-run hydraulic power plants. The method is meant for determining water volume flow rate of turbines of low-pressure hydraulic units with reinforced concrete spiral chambers of trapezoidal cross-section with partial angle of contact and stators made in the form of columns. At that, the columns are combined with chords from above and from below. The method consists in measuring average flow velocity by using acoustic method and determining water volume rate as per the measured velocity value and constant flow coefficient. Acoustic beam is formed with acoustic converters. Flow coefficient is determined at power tests performed at a certain site. As per the first version of the invention, one of acoustic converters is installed on upper or lower belt of the stator, escaping stator column. At that, the second acoustic converter is installed on the spiral chamber wall in horizontal plane or at an angle thereto. As per the second version of the invention, acoustic beam reflector is installed on upper or lower belt of the stator. Both acoustic converters are installed on the spiral chamber wall. At that, one branch of acoustic beam cut off with the reflector is routed in plan at an angle of installation of stator columns. The second branch of the beam is routed in plan at an angle of 90° to the first one.

EFFECT: invention allows providing high measuring accuracy of turbine flow rate of river-run hydraulic power plants and reliability of the measuring system allowing to perform continuous operating control of flow rate.

4 cl, 11 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to power engineering and can be used for electric power generation. Proposed hydraulic unit comprises hydraulic turbine coupled with electric generator. Note here that hydraulic turbine represents turbodrill 10, electric generator represents electric drill 14 with their housings 17 and 18 integrated via sub 19 and armature-spindle 15 of electric drill 14 with rotor of turbodrill 10. Electric drill 14 is arranged above turbodrill 10. Housing 17, of electric drill 14 is coupled with lower end of drilling ripe string, the string upper end being fixed at the well mouth. Sub 19 has holes 20 communicating the well with hydraulic inlet of turbodrill 10 and hydraulic channel of armature-spindle 15 of electric drill 14. Well lower end represents its bottom, while well lock-down assembly represents bottom support jointed with lower part of housing 18 of turbodrill 10 arranged to take hydraulic unit forces and to turn hydraulic unit through. Note that well walls can also make borehole bearing element. Aforesaid lock-down assembly represents either mechanical or hydraulic wall packer jointed to lower part of housing 18 of turbodrill 10.

EFFECT: higher reliability and simplified design.

4 dwg

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