Steam turbine. RU patent 2520255.
 Rotary vortex machine / 2519624Proposed machine comprises stator, rotor and working chamber formed there between. Working chamber is communicated with working medium feed and discharge channels. Working chamber cross-section width equals the difference between maximum and minimum radii of working chamber defined as the distance from machine axis to working chamber outermost point and the distance from the axis to innermost point. Working chamber houses blades and separator engaged with stator and rotor, respectively. Every blade comprises leading edge facing the rotor and arranged at β=5÷20° to meridian plane extending through leading edge centre. Blade cross-section mid line passed through leading edge centre is inclined to said meridian plane at α=5÷60°. Flat leading edge makes a sharp edge between edge plane and blade surface facing the rotor. Edge plane is parallel with the stator cross-section. |
 Multistage radial turbine / 2518703Proposed turbine comprises rotary shaft, set of rotor blades, set of nozzles and connection channel. Rotor blades are fitted on the shaft and spaced apart thereat to direct working fluid flow in, in fact, lengthwise direction. Nozzles are arranged at top upstream part of every rotor blade to accelerate working fluid flow. Connection section has curved U-like section, blade section and inverse bend section. Said curved U-like section deflects working fluid flow from rotor blade radially outward in lengthwise direction. Blade section comprises a set of blades deflecting working fluid flow in direction of blades rotation, from said curved U-like section radially outward. Said inverse bend section deflects the flow radially inward, flow flowing from blade section radially outward. Said curved U-like section features cross-section area nearby blade section, downstream of section end, not exceeding 0.8-0.9 of its across-section area nearby the end proximate to radial turbine rotor blade, at its upper side. |
 Ventilation system and its assembly method / 2500891Ventilation device (14) to be used with rotating element (18) includes casing (16) containing a cover and an outlet section passing from the cover. The cover is hollow and forms a cavity inside itself. Internal part of the outlet section is interconnected with the cavity. The cover includes outer surface (58) containing at least one of the holes - first (38) and second (42); with that, the first and the second holes can transfer fluid medium (62) through themselves. Rotating element (18) is continued at least partially through the first and/or the second holes so that rotation of the above rotating element creates swirling of fluid medium flow, which makes it pass inside, through the first and/or the second holes and outside through the above outlet section. |
 Turbine assembly / 2498079Turbine assembly comprising at least one first and one second rotor wheels, a shaft and a bearing system. Back surfaces of rotor wheels are turned to each other. Radial rotor wheels are installed on the rotor shaft. In the zone of both radial rotor wheels there installed are thrust bearings respectively with one rotor bearing half and one stator bearing half. The rotor bearing half is placed on the back surface of conjugated radial rotor wheel. The first radial rotor wheel is made as one-piece. The second radial rotor wheel capable of being demounted is connected to the rotor shaft. The rotor shaft at the outlet from the first radial rotor wheel in the direction of the second radial rotor wheel is tapering or has constant diameter. |
 Stage of rotary vortex machine / 2496006Stage of rotary vortex machine includes two stators and one rotor that is located between stators. Toroid-shaped working cavity is formed between rotor and each of the stators. Blades connected to stator and divider connected to rotor is arranged in each cavity. In rotor there made is at least one discharge passage in the form of through longitudinal slot with parallel walls located along rotor radius. |
 Composite part of machine and gas turbine / 2492327Composite part of machine for a gas turbine with the main part made of an initial material, which in a partial area of its surface is equipped with lining from applied material with higher hardness and/or viscosity compared to the initial material. The lining is formed by certain number of lining elements, which in their longitudinal direction are applied onto the main part with an inclination towards the main flow of hot gas passing via the main part, so that lining elements cover the main body in a spiral manner. The gas turbine is made with a certain number of composite parts of the machine, namely, a fire tube, a combustion chamber, a mixing chamber of the combustion chamber and/or an inner body of the combustion chamber are arranged as composite parts of the machine. |
 Steam turbine and method for determining leakage in steam turbine / 2485323Restricting assembly is located around the shaft. The first pipe is connected as to fluid medium with the restricting assembly. The first pipe has the possibility of supplying the flow of low-temperature steam of low pressure to the restricting assembly. The second pipe is also connected as to fluid medium to the restricting assembly downstream of the first turbine section and upstream of the first pipe. The second pipe receives some part of high-temperature steam of high pressure passing to the restricting assembly from the first section of turbine. A valve is connected as to fluid medium to the second pipe. The valve has the possibility of selective activation to provide mixing of high-temperature steam of high pressure with low-temperature steam of low pressure in the second pipe. |
 Line of generator-steam turbine-turbocompressor and method for its operation / 2478795Line of generator - steam turbine - turbocompressor comprises a frequency-variable generator, a steam turbine and a turbocompressor, driven by the generator and/or the steam turbine, which are interconnected with a shafting, besides, the generator is electrically connected with an electric network for grid supply, and the steam turbine has the possibility for connection to a device of live steam supply for supply of live steam to the steam turbine, so that the line of generator - steam turbine - turbocompressor by means of changing grid supply and/or by means of supply of live steam may be controlled according to the number of rotations. |
 Aircraft engine and method of its operation / 2472942Engine has front and rear air screws with variable-rake. In cruising flight, engine runs at constant air screw tip peripheral speed. In, at least, liftoff, climb or approach, blade tip peripheral speed exceeds that in cruising speed. Blades are closed from their rake in cruising flight to that in approach. Front air screw 23 has, at least, nine blades (Nf=9) and diameter Df. Rear air screw 24 has maximum number of blades Nr=Nf minus, at least, three. Front and rear air screws 23, 24 are separated by axial clearance x. Ratio x/Df varies from 0.15 to 0.4. Engine may be gas turbine, diesel or gasoline engine, or that running on fuel cells. |
 Heat barrier coating based on zirconium dioxide, which is applied directly to monocrystalline alloys based on nickel / 2464351Invention refers to application method of heat barrier coating based on zirconium dioxide to monocrystalline heat resistant alloy based on nickel, which has the following composition, wt %: 3.5-7.5 Cr, 0-1.5 Mo, 1.5-5.5 Re, 2.5-5.5 Ru, 3.5-8.5 W, 5-6.5 Al, 0-2.5 Ti, 4.5-9 Ta, 0.08-0.12 Hf, 0.08-0.12 Si, Ni and inevitable impurities of up to 100% are the rest. To the above heat resistant alloy there applied is zirconium dioxide stabilised at least with one oxide of the element chosen from the group consisting of rare-earth metals, or combination of tantalum oxide and at least one oxide of rare-earth metal, or combination of niobium oxide and at least one oxide of rare-earth metal. A part is made from the above heat resistant alloy and the coating is applied to it using the above described method. Turbine blade includes the above part; turbomachine includes the above blade. |
 Axial-flow turbine stage and multi-stage turbine / 2256081Multi-stage turbine and axial-flow turbine stage comprise working wheels that rotate in the opposite directions, are arranged on individual shafts, and have blade cascades on the intermediate diameter, which terns the fluid flow at the angle ΔβCA = 180° - (β1I + β2EFF), where β1I is the blade cascade inlet angle, β2EFF is the effective angle of the blade cascade output. The blade cascade of the first upstream working wheel turns the fluid not more than by 15°. Between the wheels, power is transmitted via a reduction gear. Between the shafts and the common shaft, power is transmitted through a conical reduction gear. |
 Method of modification of steam turbine rotor blade, steam turbine rotor blade and multistage steam turbine / 2264541According to invention, rotor blade is modified to contribute to change of rotor blade natural vibration frequency. Proposed rotor blade has leading edge, trailing edge, first side wall and second side wall. First and second side walls are connected in axial direction to leading and trailing edges, and side walls pass in radial direction between rotor blade and head. Method includes determination of conditions of rotor blade vibration resonance and forming of blade extension between rotor blade root and head which changes resonance conditions. |
 Turbojet engine / 2264553Proposed turbojet engine contains the following devices successively installed in housing: air intake, axial-flow compressor and gas turbine, and combustion chamber and reaction nozzle. Rotors of axial-flow compressor and gas turbine are secured on shafts interconnected by gear-type reverser made in form of planetary reduction gear. Drive gear wheel of planetary reduction gear secured on turbine shaft is meshed through skew gearing with planet pinions installed separately of fixed supports. End face stage of planet pinions is mechanically closed with driven internal gear wheel secured on compressor shaft holder, thus forming skew drive of rotation opposite to rotation of above-indicated skew drive gear wheel-planet pinion gearing. |
 Jet engine and steam turbine on its base / 2276731Proposed turbine may be used for generation of electric power at power plants. Jet propulsor has working chamber, supply pipe for delivery of working medium or hot mixture and many nozzles available in one of walls of chamber. Working chamber is made in form of single space with many nozzles in one of its walls. Chamber wall opposite to nozzles is located at distance exceeding size of nozzle orifice by 40 and more times. Nozzles are provided at distance from each other exceeding size of their orifice by at least 5 times. Total area of all nozzles is lesser than sectional area of supply pipe. Turbine is provided with primary rotor made in form of Segner's wheel mounted on shaft, supply pipe for delivery of working medium, secondary rotor mounted concentrically relative to primary rotor embracing it. Mounted over circle of Segner' s wheel are two or more jet engines. Secondary rotor is made in form of impeller. Shafts of primary and secondary rotors are mounted coaxially for independent rotation. Turbine may be mounted inside low-pressure condenser. |
 Method of producing mechanical energy in turbine, turbine and segner's wheel for implementing the method / 2280168Proposed method of producing mechanical energy in turbine containing Segner's wheel comes to delivery of working medium into holes made in Segner's wheel and acceleration of working medium flowing out of holes to provide rotation of turbine shaft. Working medium is accelerated at least once to supersonic speed with provision of shock wave in closed space after Segner's wheel, accelerated working medium being fed into closed space after Segner's wheel at right angle to wheel radius and acute angle to axis of rotation. Turbine has working medium inlet and outlet, shell and Segner's wheel installed inside cylinder coaxially with shaft for rotation, and at least one additional Segner's wheel and end face fixed members. Segner's wheels are made in form of rings, and holes in them are made in form of de Laval nozzles at right angle to radius of ring and acute angle to axis of its rotation. Segner's wheels are installed between cylinder and shell to form closed ring space in between. |
 Reaction turbine / 2287695Invention relates to turbine plants and it can be used in ship and other power systems. Proposed reaction turbine contains rotor, devices to supply fluid medium with inlet and exit reaction nozzles, axis of exit nozzle is square to turbine radius. Rotor of turbine contains at least four devices to supply fluid medium to exit reaction nozzles and at least one fluid medium ionization device. Each device to supply fluid medium to reaction nozzle consists of at least two nozzles on one axle, at least one nozzle being rigidly or with possibility of axial displacement, engaged coaxially into nozzle following in direction of fluid medium flow forming space between nozzles. At least one space communicates with devices to feed and suck out fluid medium. Ionization devices are arranged in space of one of fluid medium supply device. Pressure sensors are installed in all space, and jet velocity sensors are installed in inlet and exit reaction nozzles. Jet of fluid medium from exit reaction nozzle of fluid medium supply device is directed to inlet nozzle of preceding fluid medium supply device. Rotor has cylindrical housing provided with slots near inlet nozzle of each fluid medium supply device. |
 Reaction air turbine / 2287696Invention relates to stationary and transport turbine plants and it can be used in ship and other power systems. Proposed reaction air turbine consists of rotor, reaction nozzles in plane of turbine rotation whose axes are square to radius of turbine, and devices to supply air to reaction nozzles. At least two coaxial converging nozzles and air ionization devices are arranged in housing of device to supply air to reaction nozzles. At least one nozzle is rigidly or, with possibility of axial displacement of space in between. At least one space communicates with air feed and suck out devices, intake valves are arranged on wall in at least one space and also air ionization devices. Pressure sensors are arranged in spaces. Jet velocity sensors are arranged on inlet and exit nozzles with delivery of information from sensors to plant operation control unit. Inlet sections of inlet nozzle and reaction nozzle are made in form of rectangular slot orientated along rotor shaft, lower side of slot coincides with cylindrical shell of rotor. |
 Internal combustion turbine engine / 2291305Proposed internal combustion turbine engine has body, shaft, turbine with radial blades, compressor, combustion chamber, fuel mixture supply and ignition system and exhaust system. At least one row of additional blades is found at least on one side surface of turbine. Channels-nozzles are made on surface of body adjoining said side surface of turbine. Channels-nozzles direct working gases, when registering with combustion chamber, from space formed by radial blades into space formed by additional blades. |
 Gas turbine / 2303136Proposed gas turbine has casing closed by covers, shaft installed in bearings of covers whose free end gets out through hole of one of covers, wheels secured on shaft, and intake outlet and middle spaces. Turbine wheels of similar designed are installed on shaft at distance from each other being made in form of disks, each provided with through channel arranged over concentric circles. Inlet hole of each channel opens to end face side of disk coupled with intake space. Outlet hole of each through channel opens to opposite end face. Each through channel is made in form of de Laval nozzle longitudinal axis of each of which in each concentric circle is tilted to side opposite to direction of rotation of disk and is arranged at angle to end face surface of disk to which intake holes of through channels open. Diameter of each through channel decreases in direction to center of rotation. Front, rear and middle shells are installed inside casing and provided with round slots on end face sides into which round sealing rings are fitted being pressed to end face sides of turbine wheels by springs. |
 Reaction turbine / 2303137Proposed reaction turbine contains rotor with channels to supply working medium to nozzles. Each channel is connected to unit space of spheroidal shape arranged on turbine shaft coaxially with shaft. Central axis of channel is located in plane of turbine rotation and its consists of straight line section at angle to radius of rotor perpendicular to axis of nozzle and butt joint curvilinear section whose end changes into nozzle. At least one aero-or hydrodynamic body with element of mechanization or without such elements is arranged inside channel in area of mating of two sections of channel perpendicular to plane of turbine rotation at angle to central axis of channel. Shape of inner surface of channel in place of location of aero-or hydrodynamic body and also in both sides from this place lengthwise the channel coincides in maximum possible degree with lines of flow of real liquid (working medium) passing over aero-or hydrodynamic body. |
FIELD: energy.
SUBSTANCE: steam turbine comprises a rotor with working blades, a cylinder with the end seal mounted on it and the collector of supplying the steam to the seal. The collector is connected through the pipeline to the turbine end seal. In the space between the rotor, the cylinder and the end seal the guiding unit is mounted, which input is connected by the pipeline to the collector of supplying the steam to the seals, and the output is connected to the exhaust pipe of the turbine.
EFFECT: invention enables to improve the reliability of the turbine.
1 dwg
The invention relates to the field of power engineering, turbine construction and can be used for designing and modernization of steam turbines.
When working turbines in low-flow regimes is idling and small loads leads to heating of blades of the final stages of cylinders low and medium pressure due to the fact that the applicants in the flowing part of steam is not sufficient to fill the entire cross-section blades. There are many ways of cooling of blades of steam turbines. All of them, as a rule, connected with the flow in the steam space of the condenser cooling water mixture.
Famous steam turbine T-180/210-130, for cooling of blades and exhaust manifolds which when working with small expenses pair of special sagalaeva device consisting of two headers installed perpendicular to the axis of the turbine at the top of the neck capacitor each thread a couple of low-pressure cylinder. In the upper collector placed nozzles installed at the same distance, the lower collector holes at the same distance along the length of the collector. On the blade cooling system and exhaust pipe made of supply main condensate after IPA-3. On-line supply of condensate cooling down, installed in parallel two mechanical filter. (Technical report "the Study of low-pressure turbine T-180/210-130 in modes with low steam consumption in the capacitor". Me and e of the USSR, Gastekabine, Production Association "Soyuztechenergo", the Enterprise "Withanage", Cogeneration unit 180/210 MW Art. no 1 Vilnius CHP-3, Code works: 84.201.045., Inv. №1234, Lvov, 1986)
The disadvantage of a steam turbine is that the inclusion of the work sahonagasy device does not reduce the steam temperature in the exhaust module. In addition, to reduce the temperature of exhaust apply makeup water, leading to erosion of blades and the temperature of the exhaust nozzles high, which leads to misalignment and the emergence of vibration.
Famous steam turbine, including the rotor the rotor blades, the cylinder with the installed an end seal and collector of steam supply on end seal. (A.V. Sapaev. Steam turbine. M: Energy, 1976, str, 9-13; str, tab 9-11).
On set of features this famous steam turbine is most similar to the claimed and accepted as a prototype.
The disadvantage of a steam turbine, adopted for the prototype, is that in the big pressure difference between the condensing vapor in the corresponding chamber and steam in a low-pressure cylinders for the last step, sealing pairs flows in LPT and brought forth into the condenser, not producing useful work. The particles of moisture accumulate on the surface of the exhaust pipe and form a film that reverse currents pair in this connection addicted to the output edges of the blades last stage, which leads to their erosive destruction. Couples going through end seal and falling on the blades last stage of the turbine, sticked to the basis of rotor blades and heats them, which reduces the service life of the latter.
Conducted by the applicant, the analysis of the level of technology that includes search by patent and scientific and technological information sources, and the identification of the sources containing information about the analogues of the claimed invention, has allowed to establish that the applicant had not found technical solutions, characterized by signs identical or equivalent offer.
The claimed solution can improve the reliability and efficiency of the turbine at the expense of cooling the steam coming from the end seals, by mixing it with the steam coming from the guide vanes, and then going to work blades, and thus is safe cooling of the last stage and exhaust nozzle turbine.
In accordance with the proposed technical solution proposed steam turbine, including the rotor the rotor blades, the cylinder with the installed an end seal and collector of steam supply on the seals, linked by pipeline with an end seal of the turbine, while the space between the rotor, the cylinder end seal has a guiding apparatus, whose input is piped to the collector of steam supply on the seals, and the output from the exhaust gas outlet of the turbine.
The invention is illustrated by drawings Figure 1.
Steam turbine includes the rotor 1 with the rotor blades 2, 3 cylinder with the web clipper 4. Cylinder 3 is the housing end seals 5 o-ring 6, between which formed the intermediate chamber, one of which - Luggage 7 by line 8 is connected to the collector of steam supply on seals 9. In the space between the rotor 1, 3 cylinder, housing seals 5 and clipper 4 has a guiding apparatus 10, the input of which is connected by a pipeline 11 with refrigerant vapor 12, shutoff valves 13, check valve 14, with a line of steam supply on the seal 8, and the output in the exhaust outlet of the turbine.
Steam turbine works as follows. Start-up operations at turbine start with steam from the manifold gaskets 9 on line 8 in the camera 7 seals 5, at the same time opens the valve 13 and couples from the collector 9 through cooler 12 pipeline 11 comes to directing device 10. Sealing pairs in the pipelines of steam supply on the seal 8 enters the chamber 7 and through the sealing ring 6 flows in cavity formed by the rotor 1, 3 cylinder, housing seals 5 and clipper 4, which has a guiding apparatus 10. Cooled steam coming from the guide vane 10 mixed with steam coming out of the end seals 5, and this reduces the temperature of the mixed couple. Cooled steam mixture through the gap between the rotor 1 and clipper 4 gets to the shoulder-blade 2. As the steam supplied to the shoulder blade 2 of the flowing part, fills it with about one third and the centrifugal force is discarded to the periphery blade 2, then the root of the blade 2 vacuum is created and there is a pumping effect, due to which cooled steam is supplied to the shoulder blade 2 and cools it.
Steam turbine, including the rotor the rotor blades, the cylinder with the installed an end seal and collector of steam supply on the seals, linked by pipeline with an end seal turbine, characterized in that in the space between the rotor, the cylinder end seal has a guiding apparatus, whose input is piped to the collector of steam supply on the seals, and the output from the exhaust gas outlet of the turbine.