(57) Abstract:Combined chosen to replace-a guide bearing for the axial turbine contains resistant guide bearing with two bearing surfaces, held in an annular groove of the shaft. Bearing segments each fixed on the radially inner segment of a common carrier beams, which Rethimno attached to podshipnikovaja and enters annular groove. Bearing this design has good access, the segments are made with the ability to easily control and can be easily replaced. 6 C.p. f-crystals, 4 Il. The invention relates generally to axial turbine, comprising surrounded by the housing of the generator and turbine, which is installed on one common shaft, or the ends of their shafts connected by the coupling, and on the segment of the shaft between the generator and the turbine has a combined chosen to replace-a guide bearing. The invention relates in particular to the combination chosen to replace-guiding bearing for these machines, held by the surrounding of podshipnikovaja, which is fixed to the first bearing segments cooperating with the first cylindrical segment in modestmouse with two axially remote from each other, radially directed line segments of the shaft as the bearing surfaces of the thrust bearing, and means are provided for adjustment of the mutual position of the bearing segments on the said shaft segments.The invention is based in General, the prior art known, for example, from the prospect - "Bruwn Boveri Mittei lungen" April 1970, T. 57, pages 182 to 190, and in particular Fig. 5 on page 186. More detailed design chosen to replace the combined-guide bearing of this kind is the subject of the international application N WO 90/14523.The axial generators, also called axial turbine generators, combined chosen to replace-a guide bearing mounted between the turbine and the generator, must take in addition to the own weight of the rotating parts hydraulic thrust, comprising many hundreds of tons. This combined bearing is held surrounding podshipnikovaja, which is fixed to the segments of the thrust bearing, interacting with the two radially directed bearing surfaces on the flange of the shaft as the bearing surfaces of the thrust bearing. On podshipnikovaja also enshrined the radial segments of podshipnikovykh. In addition, all segments correspond to means for regulating their mutual position relative named bearing surfaces of the thrust and radial bearings on the shaft sections (see application N WO 90/14523).Bearing segments of the thrust bearing on podshipnikopttorg is very difficult, because podshipnikopttorg should cover this flange U-shape. Adjustment and revision of the work necessary to remove difficult part of the casing, in order to get to the adjusting elements of the bearings.The basis of the invention lies in the task of creating an axial turbine with a combined chosen to replace-guide bearing, which can bear any loads, has a simple structure and provides good access to the bearing segments together with their control elements.This problem is solved according to the invention by the fact that on the section of the shaft between the turbine and the generator is made annular groove perpendicular to the axis of the shaft bearing surfaces for the bearing, each of the second bearing segments mounted on the radially inner segment of a common carrier beams, which Rethimno fixed on Podshipnik what is that
- mounting and Dismounting of bearing segments can be carried out simply;
as the radial segments, and the segments of the thrust bearings have good access and are made with individual regulation;
maintenance and inspection work can be carried out quickly;
- bearings do not require lubrication when the machine stop;
the elasticity of the thrust bearing is achieved through constructive execution and departure bearing beams, can be a simple way aligned with the overall elasticity of the axial generator.The invention is explained in more detail below using the drawing.An example embodiment of the invention schematically shown in the drawing, where
in Fig. 1 in a strongly simplified form shows a longitudinal section of an axial turbine;
Fig. 2 is a more detailed longitudinal section chosen to replace-guide bearing of the generator of Fig. 1;
Fig. 3 is a cross - section of part of the radial guide bearing of the generator of Fig. 2 along the line A-A;
Fig. 4 is a longitudinal section of part of an alternate chosen to replace-guide bearing.In Fig. 1 in a strongly simplified form shown, an axial turbine, the generator is aznom the casing 1, held under the water by the bottom 2 and top 3 supports. Turbine and generator set in this example, on the same shaft 4. The generator is mounted on the shaft 4 console and consists of a stator 5 and rotor 6. The latter contains the body 7 with the poles (not shown) mounted on the supporting structure 8 of the rotor, which Rethimno enshrined in the area of the hub 9 at the end of the shaft 4. At the other end of the shaft 4 is installed turbine wheel.Marked POS. 10 combined chosen to replace-the guide bearing is mounted on a segment of the shaft between the generator and the turbine and is retained by podshipnikovaja 11, which casings conical fastener 12 and the radial fastener 13 is fixed by a flange 14 on the inner wall of the casing 1. The bearing is completely enclosed in a compound lining 15, 16, which on the end side of the shaft is type radial gap seals in the grooves 17, 18 of the shaft.In this regard, the axial turbine is known and, for example, described and depicted in the above publication.As follows from Fig. 5 of this publication or of the only pieces of the application N WO 90/14523, accessibility to the bearing segments with the purpose of adjusting or servicing is difficult not only covering the guide bearings according to the mentioned application, that is, structures in which the segments of the thrust bearing interact with both lateral surfaces of the shaft shoulder.To create an axial turbine with combined chosen to replace-guide bearing, which can bear any loads, has a simple structure and provides good access to the bearing segments together with their adjusting elements according to the invention, provides for the implementation on a segment of the shaft between the turbine and the generator of the ring groove 19 is perpendicular to the axis of the shaft bearing surfaces 20, 21 of the bearing. These both bearing surfaces 20, 21 of the bearing segments 22, 23 mounted on the inner end of the radially oriented bearing beams 24. The beams in this example, their twelve - evenly distributed around the circumference (Fig. 3). The beams 24 Rethimno attached to podshipnikovaja 11 threaded his fingers 25, axially completely through podshipnikopttorg 11, and together with a fixed segments 22, 23 are annular groove 19. The device is made in this example so that it is perpendicular to the axis of the shaft 4 mounting surface 26 of podshipnikovaja 11 lies on the same axial height are the texts and extract the screw fingers 25 can radially to pull out and remove.If perpendicular to the axis of the shaft 4 mounting surface 26 of podshipnikovaja 11 does not lie on the same axial height of the bearing surface 20 of the side wall of the groove 19 as this form of execution shown in the example in Fig. 4, where the same parts are denoted by the same reference position as in Fig. 2 - you should make sure that the radial width b23segments 23 was less than the distance b in the light between the individual ring 32 and the shaft 4. In this condition the carrier beam together with the segments 22, 23 after the weakening and extract the screw fingers 25 you can extend radially outward and then axially and thereby remove.Bearing segments 22, 23 Rethimno mounted on the carrier beam in a known manner by means axially operating the adjusting means 27 and is well accessible from the outside. The bearing surface 28 on the shaft 4 for segments 29 of the radial bearing of the bearing is directly adjacent to the annular groove 19. The segments 29 Rethimno fixed to the inner periphery of podshipnikovaja 11 with radial operating the adjusting means 30 and, if necessary, spacer plates 31.Podshipnikopttorg 11 consists of (in OK is that welded between a radially directed, axially passing the ridges 34. To ensure that the clamping forces to the supporting beams 24 are not passed on welds, the design is made so that the holes are axially through jumpers 34 and each individual ring 32, 33 consists of a number of annular segments welded butt joint with the ends of the crosspieces 34. Directed inwardly, axially passing the narrow sides of the jumper at the same time serve for the maintenance and fixing of the segments 29 radial rotor bearing.The covering on the end chosen to replace-guide bearing of the turbine is made in the form of two or more annular plate parts 16, which enters the groove 18 and is bolted to the end face 35 of podshipnikovaja 11 from the generator. The covering on the end-side of generator is designed as consisting of two or more parts of the box-shaped cover 36 D-shaped section, which Rethimno mounted on the radial fasteners 13. On directed radially inward shelf similar to the end from the generator Rethimno fixed annular plate 37 of the two or more parts, a part of the groove 17. Proper sealing of the bearing between the turbine and the generator are connected in a known manner through contact apartine in Fig. 2 also shows the system of oil supply to the bearing 10. It involves passing the inside of the cover 36 of the ring line 40, from which the inside to the segments 29, 22, 23 were branched lines 41, 42, 43, respectively.As can be seen from Fig. 2, the design chosen to replace the combined-guide bearing 10 provides the cover 36 unhindered access to its basic parts. Both radial and axial bearing segments are not only clearly visible, and installed with the possibility of regulation, but they can also remove a few hand motions. After removal of the bearing beams 24 should just slip segments 29 of the radial bearing in the direction of the annular grooves 19 and extract them from the annular space between the shaft 4 and podshipnikovaja 11.Another advantage of the described device in that the axial guide and radial bearing can be made compact without complex chosen to replace-restraints, because they are mounted on a common holding body podshipnikovaja 11. The use of a single retaining body (carrier beam 24) for each of the two segments 22, 23 allows, in addition, by a suitable calculation of the bearing beams, neprimenimosti may be subsequently changed, for example, due to the replacement of other beams.The bearing design has been described on the example of an axial turbine with generator and turbine mounted on a common shaft 4 and the rotor of the generator is installed console. It can, of course, also be used in installations generator with support from both parties or in installations where the generator and turbine are used through the intermediate shaft, as described in the above-mentioned prospectus. 1. Axial turbine comprising a generator (5, 6, 7), surrounded by a housing or casing (1), and the turbine, which is installed on the same common shaft (4), or the ends of their shafts connected by the coupling, and on the segment of the shaft between the generator and the turbine has a combined nessisarily bearing (10) held its surrounding podshipnikovaja (11), which is fixed to the first bearing segments (29) communicating with the first cylindrical segment (28) of the shaft as the bearing surface of the radial bearing, and two groups of second bearing segments (22, 23), which interact with two axially remote from each other, radially directed line segments of the shaft as the bearing the bearing segments on the said shaft segments, characterized in that on the section of the shaft between the turbine and the generator is made annular groove (19) perpendicular to the axis of the shaft bearing support surfaces (20, 21), while the second bearing segments (22, 23) is fixed on each of the radially inner segment of the overall beam (24), which Rethimno attached to podshipnikovaja (11) and enters an annular groove (19).2. Installation under item 1, characterized in that podshipnikopttorg consists of two axially remote from each other individual rings (32, 33), which are separated from each other by radially directed, axially passing jumpers (34) and are firmly connected with them.3. Installation under item 2, characterized in that the beams (24) is fixed on podshipnikovaja (11) threaded fingers (25), which axially passes through the entire podshipnikopttorg (11).4. Installation under item 1, characterized in that podshipnikopttorg consists of radially directed, axially passing jumpers (34), to both ends of the jumper (34) butt welded passing in the radial direction of the ring segments, and bridges, as well as ring segments form thus podshipnikopttorg (11) in the form of a double ring, etc is odashima via jumper wires (34).5. Installation on PP.1, 2, or 4, characterized in that the first bearing segments (29) Rethimno attached to the ends of the jumpers (34) through the adjusting means (30, 31).6. Installation on PP.1 to 5, characterized in that the perpendicular to the axis of the shaft 4 mounting surface (26) of podshipnikovaja (11) lies at the same height with the carrier bearing surface (20) of the side wall of the groove (19).7. Installation on PP.1 to 5, characterized in that when lying at different axial height of the mounting surface (26) of podshipnikovaja (11) and bearing a bearing surface (20) of the side wall of the groove (19) distance (b) in the light between the shaft (4) and podshipnikovaja (11) is greater than the radial width (b23) adjacent segment (23).
FIELD: mechanical engineering.
SUBSTANCE: plain bearing comprises segment inserts mounted inside the race and adjustable with the use of a wedge pair. The first wedge surface is made on the insert, and the second one is made on the housing. According to another version, the plain bearing comprises segment inserts adjustable by way of a wedge pair and having a bearing sphere. The first wedge surface is made on the insert. The second wedge surface made of a bearing wedge bears on the race via the bearing surface.
EFFECT: enhanced reliability and simplified structure.
8 cl, 6 dwg
FIELD: engines and pumps.
SUBSTANCE: hydrogenerator includes rotor 1, oil bath of centre plate, which has external and internal walls 3 and 6, support elements 4, cover 7 and condensers 8 of oil vapours and detachable ring filter 9, gravity filter 10 and water ejector 11, which are arranged on cover 7 and attached to each other and through condenser 8 to air cavity of oil bath, absorption cooling chambers with oil receiver, non-return valve 13 and tight valve 22. In oil bath there installed are flexible U-shaped pipelines 23 which are rigidly pressed by means of clamps to walls 3 and 6 of oil bath and to its bottom 2. Inlet edges of face of pipelines 23, which are adjacent to wall 6, are located in air cavity of oil bath restricted with rotor 1 and wall 6 and above level of oil filling the oil bath. Outlet edges of pipelines 23 which are adjacent to wall 3 are located in air cavity of oil bath restricted with rotor 1, wall 3 and cover 7 and above level of the oil filling the oil bath and inlet edges of pipelines 23 which are adjacent to wall 6.
EFFECT: improving efficiency of the device by complete prevention of oil vapours outflow from oil bath of centre plate to atmosphere.
3 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: hydroelectric turbine includes stator 12 and shaftless rotor 14. Stator 12 restricts an opening in which rotor 14 is installed with possibility of being rotated. The opening allows rotation of rotor 14 about its central axis due to its shape and size, and movement in a circumferential direction of the opening, thus moving in the direction opposite to direction of rotor 14 rotation.
EFFECT: creation of an improved turbine that is characterised with a decreased friction of bearings, which occurs at its start-up, and provides the possibility of cleaning and cooling of bearings during its functioning, which improves operating characteristics of the turbine.
12 cl, 5 dwg
FIELD: machine building.
SUBSTANCE: hydraulic machine comprises wheel fitted on shaft, both running about axis X5. Hydrostatic or hydrodynamic bearing 100 with water lubrication is composed of shaft radial peripheral surface 52 on one side and on the opposite side by inner radial surface 102 of member 101 fixed relative to said axis. Said bearing is arranged between two edges 121 and 122 to make water film removal zones created in standard operation of bearing 100. Said fixed member 101 has cavity 130 exposed to its inner radial surface 102 nearby bearing first edge 121 of said first and second edges 121, 122. Said fixed member comprises means 131, 132, 133 to communicate said cavities with those outside the bearing 100, nearby second edge 122. Said cavity 130 and said means 131, 132, 133 can remove flow parts that form water film in case removal of water film at the level of said first edge is impossible.
EFFECT: reliable operation of the bearing.
14 cl, 4 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention relates to structures of installations for energy conversion of water course of airflow into electrical power. Hydropower installation contains generator 1 and hydrodynamic drive 4, implemented in the form of two sequentially installed screws 7 and 8, implemented with rotation ability into side opposite and connected to generator 1 through conversion facility of rotational movement of two shafts into rotational movement of one shaft, implemented in the form of conic step-up gear 13, installed in inner body 6. Inner body 6 is affixed to external body 5 by means of two wicket gates 23 and 24, provided for spinning of water flow before its supplying to the back screw 8.
EFFECT: invention is directed to increasing of coefficient of efficiency of installation ensured by increasing of back screw coefficient of efficiency.
FIELD: engines and pumps.
SUBSTANCE: invention relates to units designed to convert water flow energy into electric power. Proposed power source comprises generator 1 and hydrodynamic drive 2. Aforesaid birotary generator 1 includes housing 11 and two rotors 12 and 13. Aforesaid hydrodynamic drive 2 represents two coaxial screws 3 and 4 fitted on shafts 7 and 8 on both faces of generator 1. Power source incorporates rotation converter and two auger-type turbines 5 and 6 arranged concentric with housing 11. Screws 3 and 4 and auger-type turbines 5 and 6 are linked with inner and outer shafts 7 and 9, respectively, and, via rotation converter, with rotors 12 and 13 of generator 1.
EFFECT: higher efficiency, reduced sizes at increased power.
7 cl, 6 dwg
FIELD: power engineering.
SUBSTANCE: invention is related to designs of plants for transformation of air flow water course energy into electric energy. Hydropower plant comprises generator 1 and hydrodynamic drive 2, arranged in the form of two coaxially installed screws 5 and 6, which are arranged, in their turn, with the possibility of rotation in opposite directions and connected with generator 1 via facility of two shafts rotary motion transformation into rotary motion of single shaft. Transformation facility is arranged in the form of differential planetary multiplier. Generator 1 and transformation facility are installed in body 17, having joint 18, located in vertical plane, passing through center of masses, fixed on stand 19 and providing for possibility of rotation in horizontal and vertical planes, and cavity of generator 1 is sealed and filled with lubricating liquid and communicated to pressure compensator 21, which consists of cylinder 22 and spring-loaded piston 23.
EFFECT: invention is aimed at increase of plant efficient factor with reduction of its dimensions and simultaneous increase of power.
7 cl, 2 dwg
FIELD: power engineering.
SUBSTANCE: hydrogenerator comprises electric generator 1 and hydrodynamic drive 2. Electric generator 1 is arranged as birotary in the form of cylindrical body 3 with excitation winding 6 inside of it and external and internal rotors 4 and 5. Hydrodynamic drive 2 is arranged in the form of two coaxially installed turbines 9 and 10, one of which is installed on external surface of external rotor 4, and the second one - on internal rotor 5. Electric generator 1 is equipped with magnets 7 and 8, installed on external and internal rotors 4 and 5, located accordingly inside and outside body 3. Turbines 9 and 19 are arranged as auger, the second of which is installed on internal surface of internal rotor 5.
EFFECT: higher efficiency factor of plant with reduction of its dimensions and simultaneous increase of power.
5 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: source of energy comprises electric generator 1, arranged as birotary with internal and external rotors 5 and 4 and hydrodynamic drive 2 with internal and external shafts 13 and 12 of drive. On external rotor 4 of electric generator 1 there are stages of working blades 14 installed, between which here are stages of opposite rotation working blades 16 installed, being connected to internal rotor 5 of electric generator, through magnetic couplings 17, number of which corresponds to number of stages of opposite rotation working blades 16.
EFFECT: increased efficiency of plant with reduction of its size and simultaneous increase of power.
4 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to designs of plants designed to convert water current energy into electric power. Proposed hydro-generator driven by sea current comprises hydrodynamic drive 2 and electric birotary generator 1 made up of housing 3, outer and inner rotors 4 and 5. Inner rotor 5 is arranged inside said housing 2. Hydrodynamic drive 2 represents blades 9 radially fitted on outer surface of outer rotor 4 and is mounted in casing 19 furnished with inlet and outlet branch popes. Housing 3 and casing 19 represents cylindrical structures. Outer rotor 4 seats outside housing 3. Rotors 4 and 5 are coupled via reduction gear 12 comprising driven gear 13 in mesh with outer rotor 4, idle gears 14 and drive gear 16 in mesh with inner rotor 5 to ensure counter rotation of rotors 4 and 5.
EFFECT: higher efficiency, reduced sizes and increased power output.
2 cl, 2 dwg
FIELD: engines and pumps.
SUBSTANCE: proposed hydraulic turbine comprises cylindrical section-modular housing 1 with vane-screw rigidly fixed on the shaft and appliance to secure the vanes to the housing that allows the shaft rotation. Each section accommodates vane-screw. All vanes feature identical curvature to provide for constant flow rate and synchronous operation of all vane-screws. Attachment mechanism is arranged on opposite side of vane-screw relative to flow direction. Turbine incorporates flow stabilisers made up of metal sheets with their one rib secured to housing 1 and their plane oriented along the radius towards the shaft along housing 1 to stabilise the flow coming from one vane-screw to the other.
EFFECT: simple design and operation, higher output and efficiency, longer life, reduced production costs.
FIELD: engines and pumps.
SUBSTANCE: unit is intended to be used at derivational and reservoired HPP with inconsiderable vibration of after-bay level with wide ranges of water head and flow rate. Lower end of vertical shaft of the unit with operating spherical surface is borne against the centre plate. Cone-shaped tray is rigidly attached to the shaft and impeller. Outlet tubes with variable and fixed cross section area are tangentially attached to the above cone-shaped tray. One end of bent vanes is fixed in the guide vanes in external rim and the opposite end is attached to the rim which envelops the shaft. Vanes are made at a tangent to outlet section plane. Upper rib of vane is oriented in radial plane and inclined from internal rim to external rim, and lower rib is oriented horizontally. Seal of the impeller consists of two flexible elastic rings with the chute profile the bottom of which faces the top. Some sides of those are tightly attached to the sealed parts and the opposite convex sides contact each other. Centrifugal water flow regulator includes balancing levers, rods and a slide on the unit shaft, and it is arranged in protection casing in the flowing water flow.
EFFECT: use of the unit contributes to increase in the power, efficiency and high speed, and allows simplifying, cheapening and accelerating the HPP construction.
7 cl, 17 dwg