Turboalternator

FIELD: engines and pumps.

SUBSTANCE: proposed turboalternator comprises outer stator arranged in tight casing, upper fairing and inner rotor fitted on turboalternator shaft. The latter runs in rolling bearings arranged on both sides of the rotor. Said shaft is furnished with two extra seals. Said tight casing is filled with lubricant-coolant. It comprises two stationary pistonless compensators that do not revolve with the shaft. First compensator is arranged inside turboalternator housing nut and filled with lubricant-coolant. Second compensator is arranged in shell that covers the turboalternator tight housing. First seal separates inner space of the said first compensator from outer fluid (drill fluid), while second seal separates first compensator inner space filled with lubricant-coolant from turboalternator tight housing, also filled with lubricant-coolant.

EFFECT: notable reduced abrasive wear, ruling out turbulent flow origination, longer life and higher reliability.

1 cl, 1 dwg

 

The invention relates to the field of drilling and can be used to power Autonomous downhole geophysical and navigation systems.

Known turbine generator to power the downhole equipment containing the outer rotor housing and the rotor blades of the turbine, the inner stator winding is performed on the axis in which the winding is filled sealed electroconductive material resistant to abrasive wear, the outer rotor is installed on the bearings, the inner surfaces of the slide bearings made of elastic material such as rubber, with through channels and mounted on a removable sleeves with shoulder and sleeve is attached to the axis, with the upper bearing is closed with the end face of the fairing with the formation of the annular gap between it and the housing (patent RF №2184225 on CL EV 47/00, dated 01.08.2000,).

The disadvantages of the known turbine generator are the complexity of the repair of the stator winding, increased wear of the inner surface of the rotor due to the presence of abrasive particles in the drilling fluid, in addition, due to the manufacture of inner surfaces of the bearings of rubber to assemble the stator-rotor without misalignment of the axes is very difficult.

Also known turbine generator to power the downhole equipment containing the external with the ATOR, housed in a sealed housing, the upper fairing and the inner rotor located on the shaft of the turbine, the shaft is mounted in bearings located on both sides of the rotor on the shaft placed additional sealing device, with a sealed enclosure filled with coolant fluid, and the shaft further established by the compensating device, the latter comprises a holder, glass compensator filled with coolant fluid, a piston and a spring disposed between the piston and the top of the fairing, and the cavity of the Cup compensator connected filled with coolant fluid cavity of the sealed enclosure through the axial hole made inside of the shaft, the conical surface of the upper fairing holes, and additional sealing device is located between the glass compensator and the stator of the generator (patent RF GR №39358).

The disadvantages of the known turbine generator are large inertia actuation of the piston of the compensating device for equalizing the pressure of the drilling fluid and internal pressure sealed cavity of the turbine housing (3 to 7), which is one of the main reasons for the ingress of drilling fluid through the sealing device in a hermetically sealed n is the maturity of the turbogenerator, large dimensions and weight compensating device attached console on the shaft and rotating together with the shaft, causing increased wear of the bearings and, consequently, reduce the service life of the turbine as a whole. Complicate the technology is also threaded and tapered surface on the shaft, for the manufacture of which the requirements are higher, which increases the cost of the product.

The invention aims to remedy these disadvantages and increase the service life of the turbine and increase its reliability.

The problem is solved in the present invention due to the fact that the turbo-generator to power the downhole apparatus containing an outer stator, placed in a hermetically sealed enclosure, the upper fairing and the inner rotor located on the shaft of the turbine, the shaft is mounted in bearings located on both sides of the rotor, the shaft has two additional sealing device, with a sealed enclosure filled with coolant fluid, and two compensating device pasportnogo type, which are fixed and do not rotate with the shaft, the first of which is located within the nut housing of the turbo-generator and filled with coolant fluid, and the second is installed in the holder, coloradoriver the hermetic housing of the turbo-generator, moreover, the first sealing device divides the inner cavity of the first compensating device from the outer fluid (drilling mud), and the second sealing device divides the inner cavity of the first compensating device filled with coolant fluid, from a sealed housing of a turbo-generator, also filled with coolant fluid.

The invention is illustrated in the drawing, which shows the proposed turbine in the section.

The turbine contains lower fairing 1 coupled to the housing 2. The lower fairing 1 has a flange with 4 holes for mounting and the outer conical surface 3 for smooth passage of the drilling fluid. The turbine generator is installed in the drilling string and is fixed by means of the flange 4. In the housing 2 is installed in the stator winding 5 of the turbogenerator. On the shaft 9 on both sides of the rotor 6 at a distance of not more than 70 mm from each other are installed bearings 7 and 8 and the sealing device 10 and 18, containing mechanical seals, each of which, for example, consists of two rings, one of which may be spring-loaded and have the possibility of axial movement, and the second may be able to radial movement together with the shaft. In the case of a turbo-generator 2 is installed ferrule 11, on which are fixed nebody the but and hermetically first corrective device 15 (external) with ring 16 and nut 17, made of elastic material such as elastomer, the inner cavity 19, which is filled with coolant fluid, and the second corrective device 12 (inner) ring 13, also made of the same material, the internal cavity 14 which is filled with coolant fluid. The sealing device 10 is installed between the first compensating device 15 and the second compensating device 12 and divides the internal cavity 19 of the first compensating device 15 and the inner cavity 14 of the second compensating device 12 filled with coolant fluid. Sealing device 18 mounted on the shaft 9 in such a way that divides the internal cavity 19 of the first compensating device 15 from the external fluid flow, such as drilling mud. The cover 20 is made openings for the ingress of drilling fluid on the external surface of the first compensating device 15. At the end of the shaft 9 is installed to the housing 22 of the turbine, which is fixed to the turbine 23 and the fairing 24 and valve 25 and the rod 26, through which is fueling and refueling coolant into the internal cavity 19 of the first compensating device 15, and the fastening of the rotor 6, the sealing device 10 and 18, a turbine casing 22 and valve 25 is carried out in a special way be the application thread. A distinctive feature of the turbine is equal to the flow area of the outer surface from the turbine 23 to the flange 4 of the lower fairing 1.

When the turbine drilling mud is fed in the direction shown by the arrows. Under pressure turbine solution 23 starts to rotate, and with it the rotating shaft 9, and the rotor 6. Entering through holes 21 on the outer surface of the first compensating device 15, the pressure of the drilling fluid is almost a fraction of a second is transmitted to the internal cavity 19 of the first compensator filled with coolant fluid, thereby align the external pressure of the drilling fluid with the internal pressure of the coolant in the cavity 19, and, further, this pressure almost instantly passed through the second compensating device 12 on the inner cavity 14, are filled with coolant fluid. Consequently, when performing the rotational movement of the shaft of the turbogenerator drilling mud almost misses its internal cavity, in addition, the ingress of drilling fluid inside the generator and prevent the sealing device 10 and 18. Thus, the proposed turbogenerator more reliably protected against the ingress of drilling fluid inside the generator due to the presence of two cavities filled the coolant fluid, which are arranged in series. Filling cavities generator coolant fluid helps to ensure cooling of the parts of the generator without the use of drilling mud, and the use of roller bearings located on both sides of the rotor at a distance of not more than 70 mm from each other, allows a more accurate centring of the shaft, substantially reduce the effect of magnetic field on the bending of the shaft in the working area of the electric machine (rotor-stator) and thereby significantly reduce the dimensions of the turbine generator.

The invention allows to significantly reduce abrasive wear of the parts of the turbine due to the ingress of abrasive particles contained in the mud, to avoid the possibility of turbulent flow, which is the cavitation process, thereby increasing the life of the generator and the reliability of its performance under variable pressures and temperatures.

The turbine generator to power the downhole apparatus containing an outer stator, placed in a hermetically sealed enclosure, the upper fairing and the inner rotor located on the shaft of the turbine, the shaft is mounted in bearings located on both sides of the rotor, the shaft has two additional sealing device, with a sealed housing filled with lubricant-cooled is her fluid, characterized in that it has two compensating device pasportnogo type, which are fixed and do not rotate with the shaft, the first of which is located within the nut housing of the turbo-generator and filled with coolant fluid, and the second is installed in a housing which closes the hermetic housing of the turbine, and the first sealing device divides the inner cavity of the first compensating device from the outer fluid (drilling mud), and the second sealing device divides the inner cavity of the first compensating device filled with coolant fluid, from a sealed housing of a turbo-generator, also filled with coolant fluid.



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: invention can be used as a hydraulic turbine for producing electric power, as a pneumatic and hydraulic turbine making a drive in heading machines, as well as in drilling gas and oil holes. Twin rotor stepping turbine incorporates an asynchronous reduction gear. Inner (5) and outer (6) rotors are fitted aligned on the aligned shafts, the outer and inter rotor vanes entering their inter-vane space to come into contact with the inner rotor outer surface and the outer rotor inner surface, respectively, so as to turn the said rotors in turn one way through the designed angle from the acting working clearance which allows filling the rotors' inter-vane space via the slide valves fitted on the turbine inner and outer rotors. Note that the aforesaid rotors are rigidly linked with the aforesaid inner and outer aligned shafts of the asynchronous variable gear ratio reduction gear to allow asynchronous one-way rotation of the twin turbine inner and outer rotors.

EFFECT: smaller turbine overall sizes and higher output.

5 dwg

Turbodrill turbine // 2269631

FIELD: oil and gas well drilling equipment, particularly axial flow turbine of multistage turbodrill.

SUBSTANCE: turbodrill turbine comprises stator with blade ring and inner rim, rotor with blade ring and hub. Design angles of stator flow inlet and outlet directions α2 and α1 and rotor flow inlet and outlet directions β2 and β1 are related by theoretical correlations with peripheral velocity determined in idle and optimal (shock-free) mode of turbine operation. Stator and rotor blade ring blades defining above design angles as distinct from prior art turbines are formed so that shock-free regime of flow around the stator and the rotor is realized at different peripheral velocities, wherein above shock-free regime of stator flow-around is performed in retardation mode, shock-free regime of rotor flow-around is performed in runaway mode thereof. Above stator and rotor angles are correlated as α12≤π/2 and β21≤π/2 (in the case of positive reactive turbine) and β12≤π/2 (for negative reactive turbine). The stator rim has surface of lesser diameter having conoid shape and converging towards lower cross-section thereof so that minimal annular gap defined by rotor hub is 0.05-0.3, preferably 0.1-0.2 of radial stator blade height and inner blade ring surface of lesser diameter has conoid shape and is converged to upper section so that radial rotor blade height ratio in lower and upper sections is equal to 0.7 - 0.95.

EFFECT: increased axial support resistance along with increased performance.

5 cl, 8 dwg

FIELD: electromechanical engineering.

SUBSTANCE: proposed generator primarily designed to supply with power borehole instrument of face telemetering system in the course of boring has internal stator and rotor; the latter mounts turbine in its front part that has casing carrying rectangular- or trapezoidal-section helical blades. These blades are free to vary their angle of lift depending on conditions of borehole washing with drilling fluid. Blades may be made of flexible material and have two parts of which one part is joined with turbine casing and other (loose) part is free to bend in transverse plane. In addition, blades may have variable stiffness in cross-sectional area and variable height of cross-section profile; loose parts of blades may be joined with ring. Blade turn limiter responding to maximal discharge of drilling fluid may be provided on the turbine casing.

EFFECT: enhanced operating reliability and extended variation range of drilling fluid discharge through generator turbine.

7 cl, 2 dwg

FIELD: engine manufacturing.

SUBSTANCE: invention relates to method of operation of self-contained power station powered by diesel-generator set. According to proposed method of operation of self-contained power station powered by diesel generator set equipped with additional flywheel and disconnect clutch with automatic control members, additional flywheel is mounted on separate shaft which is connected with diesel-generator set by means of disconnect clutch. Preparatory operation is carried out to set power station into operation with subsequent overcoming of short-time starting resistances from consumer. Additional flywheel is connected to shut down diesel generator set by means of disconnect clutch. Power station is started under no load, and its coming to rated speed is detected by readings of generator shaft speed pickups. Load is connected and intensity of generator shaft speed drop is checked. Information is automatically transmitted to controller wherefrom, at termination of generator speed drop, signal is transmitted to disconnect clutch, and rotating additional flywheel is disconnected from diesel generator set, thus changing the set for accelerated mode of restoration of initial rated speed.

EFFECT: provision of power saving operation at stable conditions for overcoming designed resistance torque and short-time overloads exceeding capabilities of chosen supply source.

1 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: device has metallic hubs of stator and rotor, wherein crowns of stator and rotor are concentrically pressed. Crowns of stator and rotor are made of durable ceramics and are additionally equipped with connections, allowing to exclude non-controlled turning of crowns in hubs and spontaneous axial displacement thereof.

EFFECT: higher reliability and efficiency.

2 dwg

The invention relates to the field of drilling, in particular, to a downhole motors

Downhole motor // 2224077
The invention relates to downhole motors to drive the rock cutting tool during drilling

The invention relates to a hydraulic downhole motors, which result in rotation of the roller bit, destroying the faces of barrels of drilling wells

The invention relates to the field of drilling, hydraulic actuators placed in the well

The invention relates to the field of drilling, hydraulic actuators placed in the well

FIELD: oil and gas extractive industry.

SUBSTANCE: device has metallic hubs of stator and rotor, wherein crowns of stator and rotor are concentrically pressed. Crowns of stator and rotor are made of durable ceramics and are additionally equipped with connections, allowing to exclude non-controlled turning of crowns in hubs and spontaneous axial displacement thereof.

EFFECT: higher reliability and efficiency.

2 dwg

FIELD: engine manufacturing.

SUBSTANCE: invention relates to method of operation of self-contained power station powered by diesel-generator set. According to proposed method of operation of self-contained power station powered by diesel generator set equipped with additional flywheel and disconnect clutch with automatic control members, additional flywheel is mounted on separate shaft which is connected with diesel-generator set by means of disconnect clutch. Preparatory operation is carried out to set power station into operation with subsequent overcoming of short-time starting resistances from consumer. Additional flywheel is connected to shut down diesel generator set by means of disconnect clutch. Power station is started under no load, and its coming to rated speed is detected by readings of generator shaft speed pickups. Load is connected and intensity of generator shaft speed drop is checked. Information is automatically transmitted to controller wherefrom, at termination of generator speed drop, signal is transmitted to disconnect clutch, and rotating additional flywheel is disconnected from diesel generator set, thus changing the set for accelerated mode of restoration of initial rated speed.

EFFECT: provision of power saving operation at stable conditions for overcoming designed resistance torque and short-time overloads exceeding capabilities of chosen supply source.

1 dwg

FIELD: electromechanical engineering.

SUBSTANCE: proposed generator primarily designed to supply with power borehole instrument of face telemetering system in the course of boring has internal stator and rotor; the latter mounts turbine in its front part that has casing carrying rectangular- or trapezoidal-section helical blades. These blades are free to vary their angle of lift depending on conditions of borehole washing with drilling fluid. Blades may be made of flexible material and have two parts of which one part is joined with turbine casing and other (loose) part is free to bend in transverse plane. In addition, blades may have variable stiffness in cross-sectional area and variable height of cross-section profile; loose parts of blades may be joined with ring. Blade turn limiter responding to maximal discharge of drilling fluid may be provided on the turbine casing.

EFFECT: enhanced operating reliability and extended variation range of drilling fluid discharge through generator turbine.

7 cl, 2 dwg

Turbodrill turbine // 2269631

FIELD: oil and gas well drilling equipment, particularly axial flow turbine of multistage turbodrill.

SUBSTANCE: turbodrill turbine comprises stator with blade ring and inner rim, rotor with blade ring and hub. Design angles of stator flow inlet and outlet directions α2 and α1 and rotor flow inlet and outlet directions β2 and β1 are related by theoretical correlations with peripheral velocity determined in idle and optimal (shock-free) mode of turbine operation. Stator and rotor blade ring blades defining above design angles as distinct from prior art turbines are formed so that shock-free regime of flow around the stator and the rotor is realized at different peripheral velocities, wherein above shock-free regime of stator flow-around is performed in retardation mode, shock-free regime of rotor flow-around is performed in runaway mode thereof. Above stator and rotor angles are correlated as α12≤π/2 and β21≤π/2 (in the case of positive reactive turbine) and β12≤π/2 (for negative reactive turbine). The stator rim has surface of lesser diameter having conoid shape and converging towards lower cross-section thereof so that minimal annular gap defined by rotor hub is 0.05-0.3, preferably 0.1-0.2 of radial stator blade height and inner blade ring surface of lesser diameter has conoid shape and is converged to upper section so that radial rotor blade height ratio in lower and upper sections is equal to 0.7 - 0.95.

EFFECT: increased axial support resistance along with increased performance.

5 cl, 8 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used as a hydraulic turbine for producing electric power, as a pneumatic and hydraulic turbine making a drive in heading machines, as well as in drilling gas and oil holes. Twin rotor stepping turbine incorporates an asynchronous reduction gear. Inner (5) and outer (6) rotors are fitted aligned on the aligned shafts, the outer and inter rotor vanes entering their inter-vane space to come into contact with the inner rotor outer surface and the outer rotor inner surface, respectively, so as to turn the said rotors in turn one way through the designed angle from the acting working clearance which allows filling the rotors' inter-vane space via the slide valves fitted on the turbine inner and outer rotors. Note that the aforesaid rotors are rigidly linked with the aforesaid inner and outer aligned shafts of the asynchronous variable gear ratio reduction gear to allow asynchronous one-way rotation of the twin turbine inner and outer rotors.

EFFECT: smaller turbine overall sizes and higher output.

5 dwg

Turboalternator // 2404370

FIELD: engines and pumps.

SUBSTANCE: proposed turboalternator comprises outer stator arranged in tight casing, upper fairing and inner rotor fitted on turboalternator shaft. The latter runs in rolling bearings arranged on both sides of the rotor. Said shaft is furnished with two extra seals. Said tight casing is filled with lubricant-coolant. It comprises two stationary pistonless compensators that do not revolve with the shaft. First compensator is arranged inside turboalternator housing nut and filled with lubricant-coolant. Second compensator is arranged in shell that covers the turboalternator tight housing. First seal separates inner space of the said first compensator from outer fluid (drill fluid), while second seal separates first compensator inner space filled with lubricant-coolant from turboalternator tight housing, also filled with lubricant-coolant.

EFFECT: notable reduced abrasive wear, ruling out turbulent flow origination, longer life and higher reliability.

1 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to power supply system of borehole surface system assembly. The power supply system of a borehole surface system assembly contains at least one primary engine interconnected to fuel source supplying the primary engine and containing at least one heat source, at least one pump driven by the primary engine interconnected to at least one borehole and at least one fluid used in the borehole and at least one auxiliary system interconnected to the heat source from at least one primary engine. At that the auxiliary system contains a heat exchanger designed to transfer heat from the heat source to the fluid in order to separate one part of the fluid from the other part in at least one borehole.

EFFECT: improving efficiency, flexibility and productivity of the power supply system of a borehole surface system assembly.

20 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: generator, external stator placed in as sealed body, internal rotor installed at the generator shaft with roller bearings in sealed cavity filled with a lubricant coolant and sealing components. At that the generator sealed body is divided into three sealed loops - electrical, kinematic and protective ones. Electric loop of the stator is equipped with an independent compensating diaphragm and filled with cooling liquid and separated from the kinematic loop by a screen made of non-magnet material. Kinematic loop of the bearings is filled with lubricant and separated by a system of cup-type seals and inner diaphragm from the protective loop of an end sealing compensator filled with lubricant in the volume limited by the outside diaphragm. The electrical loop is filled with dielectric cooling liquid without excessive pressure; the kinematic is filled with dielectric cooling liquid without excessive pressure; protective is filled with dielectric cooling liquid under excessive pressure. Besides, the protective loop may be filled with lubricant having higher viscosity and higher boundary tension in comparison with lubricant in the kinematic loop. Zero point of the stator windings is coupled to the body through a plugging contact. The filling system for the protective and kinematic loops has a valve spindle to switch between the filled loops at vacuuming and filling of lubricant. Rigidity of diaphragms in the electric and kinematic loops is higher than the same in the protective loop.

EFFECT: improving reliability of the generator and reducing labour intensity during repair and maintenance operations.

6 cl, 1 dwg

FIELD: mining.

SUBSTANCE: group of inventions is related to drilling, i.e. to rotary drilling hydraulic drives installed in borehole. Assembly of hydraulic downhole motor comprises screw motor having near end and far end and comprising stator and rotor. Stator comprises metal case, first elastomer material arranged in metal case, and first rigid material, arranged radially and directed inward from and at least partially covering first elastomer material. Rotor contains metal core, second elastomer material, located around metal core, and second rigid material arranged around second elastomer material. Stator first rigid material contacts rotor second rigid material.

EFFECT: enabling limiting of rotor geometric center displacement trajectory.

12 cl, 21 dwg

FIELD: electricity.

SUBSTANCE: invention relates to turbine for transmission of electric data from one end of turbine to other end. Turbine (100) has first end (101) and second end (103). Ends (101) and (103) are opposite to each other. Turbine (100) comprises housing (104), shaft (102) located in centre of housing (104), engine (106), having a plurality of rotors, stators and bearings arranged between shaft (102) and housing (104), at least one non-conducting insulator, providing electrical insulation of shaft (102) and housing (104) from each other. Engine (106) is located between first end (101) and second end (103) of turbine (100). Non-conducting insulator is located between housing (104) and a plurality of rotors, stators and bearings or is located between shaft (102) and a plurality of rotors, stators and bearings.

EFFECT: invention is aimed providing transmission of electric data signals.

20 cl, 12 dwg

Up!