1204results about "Reaction engines" patented technology

A wind energy plant with a nacelle, a rotor, which features at least one rotor blade adjustable in its blade pitch angle, a central control device for controlling the wind energy plant and a control unit disposed in the rotor for controlling the blade pitch angle of the at least one rotor blade, wherein the central control device and the control unit in the rotor can exchange data with each other via a data link, which comprises at least one first sending and receiving device at the nacelle side and at least one second sending and receiving device at the rotor side, wherein a wireless network connection with a safety-oriented communication protocol is provided between the at least one first sending and receiving device and the at least one second sending and receiving device, and that one monitoring- and communication device at a time is associated to the first and / or the second sending and receiving device, which can monitor the function of the sending and receiving device and initiate a predetermined action in the case of an error.

A fluid connection for a hydromotive machine or fluid-control valve having a first duct and a second duct. The first duct includes a mid-portion between a first end of the first duct and a second end of the first duct that has a non-circular cross-section. A second end of the first duct is wholly within the second end of the second duct. A first end of the second duct is wholly outside of the first duct.

The invention particularly discloses a visual monitoring system and an analysis method for the abrasion state of an impulse turbine set, and relates to the technical field of hydroelectric power generation equipment monitoring. The device comprises a visual monitoring module, a control module and an abrasion analysis early warning module, the visual monitoring module collects images through an industrial camera, an LED light source, a packaging protection structure and a water and mist removing device. The control module formulates an imaging mechanism according to working conditions such as strong water mist interference, idling no water, static no water and the like, and is linked with a unit PLC control system to realize imaging triggering, state adjustment and data interaction; and the abrasion analysis and early warning module identifies an abrasion area through a U-Net + + algorithm, calculates abrasion parameters based on a multi-view vision technology, grades the abrasion parameters, predicts a trend by adopting an ARIMA model, and recommends a maintenance scheme through rule reasoning in combination with threshold early warning. Automatic and intelligent monitoring and analysis of the abrasion state of the impact type unit are achieved, and guarantee is provided for safe and efficient operation of the unit.

The invention discloses a low-water-head water turbine with a flow guide wing bionic blade, which is provided with a variable pitch system for adjusting an included angle between a runner blade and an incoming flow direction, and a deflection control system for adjusting an included angle between a guide vane arranged on a bulb body and the incoming flow direction, the water flow impact acting force on the blades can be changed through the water flow impact acting force, the water flow impact acting force on the blades can be changed through the water flow impact acting force, and the water flow impact acting force on the blades can be changed through the water flow impact acting force. In addition, the blade of the runner of the hydraulic turbine set is the blade with the wave-shaped front edge, and a section protruding outwards is arranged in a pipeline for containing the bulb body and the runner, so that the water energy utilization rate of the hydraulic turbine set is further increased. The blade adopts a sine curve-shaped waveform front edge, and the structure simulates a convex shape on a fin-shaped limb of an underwater organism, so that the resistance in water is reduced, and the water energy utilization rate of a water turbine set is increased.

The invention discloses a modular splicing type wind power tower drum, and relates to the technical field of wind power engines, the modular splicing type wind power tower drum comprises a first tower drum and an automatic splicing assembly, a first flange is arranged on the outer wall of the top of the first tower drum, the automatic splicing assembly is fixed on the outer wall of a second tower drum, and a rotating sleeve is fixed at the end part of a blade. According to the modular splicing type wind power tower drum, oil flows in the annular channel to push the gear ring to be meshed with the nut gear to rotate, so that the nut body is in threaded connection along the surface of the fastening bolt in the descending process, and after the fastening bolt completely descends, the oil stops flowing to form resistance on the two sides of the blades; the nut body cannot rotate at will through the bearing, it is guaranteed that the first tower drum and the second tower drum are firmly spliced through the fastening bolts, fastening of all the fastening bolts can be achieved at a time, workers do not need to work high above the ground, assembly time is greatly shortened, and therefore the assembly efficiency of the tower drums is improved.

The utility model discloses vertical shaft hydroelectric power generation equipment which comprises a power generation module and a power output module, the power generation module comprises a floating platform, a power generator and a power input shaft, the power input shaft is vertically arranged and arranged on the floating platform in a swinging mode, the power generator is arranged on the floating platform, and a motor shaft of the power generator is in transmission connection with the power input shaft; the driving module comprises a water wheel assembly, the water wheel assembly comprises a plurality of blades, the blades are distributed around the rotating axis of the water wheel assembly, and the water wheel assembly is connected with the power input shaft; the counterweight assembly comprises a connecting rod, a rotating seat, a first anchor chain and a first counterweight part, the lower end part of the connecting rod is rotatably arranged on the rotating seat, and the first anchor chain is connected between the rotating seat and the first counterweight part; the upper end of the connecting rod is connected to the bottom of the water wheel assembly. The power generation efficiency of the hydroelectric power generation equipment is improved.

The utility model belongs to the field of fluid mechanical performance testing, and particularly discloses a water pump or hydroelectric generating set operation performance testing device which comprises an acquisition module and a testing module, the acquisition module comprises a power supply unit, a signal conditioning circuit and a data acquisition card, and the power supply unit is packaged by a sensor group and a portable interface box. The interface box and the sensor group are connected through phoenix wiring terminals, so that each path of sensor forms an independent signal channel, the test module comprises a calibration module, a test module, a sorting module and a signal analysis module, the calibration module comprises calibration optical cables connected with the signal channels in a one-to-one correspondence manner, and the calibration optical cables are connected with the signal channels in a one-to-one correspondence manner. The test module comprises an online monitoring unit, a test unit and a test recording unit, the sorting module is used for obtaining effective test data from the test recording unit, and the signal analysis module comprises a time domain analysis module and a frequency domain analysis module and is used for drawing various data charts for the effective test data. According to the utility model, the unit test process is simplified, and the error probability is greatly reduced.

The utility model discloses a water wheel driving module and hydroelectric power generation equipment, the water wheel driving module comprises two mounting discs and a plurality of blades, and the two mounting discs are arranged up and down; each blade comprises a mounting frame and a plurality of baffles, a plurality of through holes are formed in the mounting frame, and the baffles are hinged to the mounting frame and arranged at the corresponding through holes; the baffle is configured to be located on the incident flow face of the blade to close the through opening, and the blade is further configured to be located on the back flow face of the blade to open the through opening. The multiple blades are distributed around the axis of the installation discs, and the installation frame is vertically arranged and fixedly arranged between the two installation discs. The use reliability and the power generation efficiency are improved, and the manufacturing cost is reduced.

The invention provides a method for constructing a physical field of a horizontal axis water turbine blade of an agent model, and relates to the technical field of digital twinning. According to the method, rotating speed data of a water turbine under different flow velocity conditions are determined, and rotating speed values corresponding to all flow velocities are obtained; then, fluid-solid coupling simulation is carried out in combination with experimental data, and stress and deformation data of the water turbine blade under the actual operation working condition are further obtained; according to the method, the KNN algorithm is utilized to carry out order reduction processing on the obtained blade structure data, a plurality of grid points are combined into representative points, the calculation complexity is low, the processing requirement of graph rendering software on the data size in the real-time rendering process is met, a combined Kriging method is adopted to carry out digital twinning agent model training on the data after order reduction, and the real-time rendering efficiency is improved. The reconstruction of a real-time physical field of the blade is realized; iteratively optimizing the digital twin physical field proxy model according to a genetic algorithm, and solving the problem of deviation between the proxy physical field model and a real physical model; and finally, deploying the digital twin physical field agent model into a digital twin system and solving physical field distribution in real time.

The invention relates to the technical field of hydroelectric generation, in particular to an impulse turbine, a water bucket and a mortise and tenon joint structure for the water bucket and a hub. The water bucket comprises water bucket blades and tenons arranged at the roots of the blades; the shape of the tenon is configured to be movably assembled with a mortise formed in a hub of the water turbine in a fit clearance mode. According to the structure, a movable assembly mode with a fit clearance can be realized, and the water bucket can generate limited displacement in a gradual change clearance under different jet flow impact load conditions, so that the original traditional rigid connection is changed into flexible movable connection. The water bucket can be reliably connected with the hub without depending on welding or bolt fixing, and the common problem that in an original mode, a water head and a hub welding seam are prone to breakage under high-strength water impact force is solved.

The invention discloses a torsion type pipeline water turbine damping grid position adjusting mechanism which comprises a conveying pipeline, a sliding groove module and a movable damping grid. A guide through groove is formed in the conveying pipeline and extends in the conveying direction of the conveying pipeline. The sliding groove module is arranged outside the conveying pipeline, the interior of the sliding groove module is communicated with the guide through groove, a variable-pitch spring is arranged in the sliding groove module, and the telescopic direction of the variable-pitch spring is consistent with the extending arrangement direction of the guide through groove; the movable damping screen is arranged in the conveying pipeline in a sliding mode and provided with a connecting rod and a sliding block. One end of the connecting rod penetrates through the guide through groove and then is connected with a sliding block; the sliding block is fixedly connected with one end of a variable pitch spring; when the movable damping screen is scoured by fluid, the variable-pitch spring provides resistance for the movable damping screen so that the movable damping screen can move to the stress balance position. After the scheme is adopted, the self-adaptive adjustment of the position of the rectifying grid can be realized.

This invention discloses a wave energy and solar energy combined power generation device and its power station, belonging to the field of new energy technology for power generation using renewable energy. It includes floating boxes and photovoltaic panels. Adjacent floating boxes are hinged laterally to the same horizontal axis. The photovoltaic panels are arranged on the surface of the floating boxes at an angle facing south or horizontally. A connecting rod perpendicular to the horizontal axis is hinged to the horizontal axis. A hydro-generator and a passive piston pump for driving the hydro-generator are installed inside the floating box. The piston rod of the passive piston pump is hinged to the connecting rod at a position away from the horizontal axis. When adjacent floating boxes swing up and down around the horizontal axis, the passive piston pump completes the water intake and drainage actions, and drives the hydro-generator during drainage. This invention as a whole can realize the combined power generation of wave energy and solar energy. During the swinging of the floating boxes, the orientation of the photovoltaic panels can remain approximately unchanged, thus ensuring the utilization efficiency of the photovoltaic panels while fully utilizing wave energy.

The utility model belongs to the technical field of power generation equipment, and particularly relates to a speed increasing mechanism which comprises a box body, a speed increasing module is arranged in the box body, the speed increasing module comprises a shell, and a rotating disc and a rotating shaft are arranged in the shell. The rotating disc comprises a central column and a disc, the rotating shaft comprises a shaft rod and a gear, the shaft rod is perpendicular to the central column, the gear is coaxially fixed to the shaft rod, and the gear is meshed with insections on the disc; the rotating disc rotates to drive the shaft rod to rotate synchronously. A plurality of speed increasing modules are provided; and in every two adjacent speed increasing modules, the shaft rod of one speed increasing module is in transmission connection with the central column of the other speed increasing module. According to the utility model, energy obtained by a plurality of speed increasing modules can be concentrated on the shaft rod of one speed increasing module to be output uniformly, and meanwhile, multi-stage speed increasing can be realized.

The invention discloses an axial flow water turbine water guide mechanism and a using method, the axial flow water turbine water guide mechanism comprises an upper ring seat (1) and a lower ring seat (2), a plurality of guide vanes (3) are arranged between the upper ring seat (1) and the lower ring seat (2), rotating shafts (4) are arranged in the middles of the upper end and the lower end of each guide vane (3), a driving ring (5) is rotatably connected to the upper ring seat (1), and servomotors (6) are connected to the two sides of the driving ring (5). The upper ends of the rotating shafts (4) are connected with the driving ring (5) through a first connecting rod (7) and a second connecting rod (8), and a linkage mechanism connected with the lower ends of all the rotating shafts (4) is arranged at the bottom of the lower ring seat (2); the linkage mechanism comprises a plurality of adapter plates (9), the adapter plates (9) are fixed to the lower ends of the rotating shafts (4) respectively, third connecting rods (10) are arranged between the adjacent adapter plates (9), and the third connecting rods (10) are hinged to the adapter plates (9). The method has the advantage of being low in maintenance frequency.

The invention relates to the technical field of hydroelectric generation, in particular to a method for determining distribution parameters of an impulse turbine, a water bucket and a pin column. The water bucket is of a double-bowl-shaped structure which is symmetrical along the water diversion blade, the water bucket is provided with an upstream face used for bearing water flow impact and a downstream face opposite to the upstream face, a plurality of pin columns are embedded in the downstream face in the normal direction of the downstream face, and the ends of the pin columns are matched with the surface of the upstream face to form a continuous smooth curved face of the upstream face. Under the conditions of high water head and sediment, deformation and cracking of the bucket and even damage of bucket breakage are avoided, and the service life of the bucket is prolonged.

The present application provides an impulse water turbine, an anti-erosion water bucket and an anti-erosion structure setting method. The water bucket has a double-bowl structure symmetrically along a water distribution edge. The water bucket has a water-impingement surface for bearing the impact of water flow and a backwater surface opposite to the water-impingement surface. The concave-convex points of the water-impingement surface are distributed in an array on both sides of the water distribution edge, the downstream area, the water outlet edge area and the water outlet area. The array of the concave-convex points on the inner surface of the water bucket can form a water film in the concave points under the impact of strong water flow. The water film generates a certain tension, thereby buffering the impact of the silt and protecting the inner surface of the water bucket. The anti-erosion performance of the water bucket of the impulse water turbine under the condition of high silt content can be greatly improved, and the problems of easy erosion, easy fracture and greatly shortened service life of the water bucket of the impulse water turbine under the conditions of high silt, high water head and strong impact force can be effectively solved.

A runner for a hydraulic turbine, including a hub and a plurality of pivotable blades extending from the hub. Each pivotable blade of the plurality of pivotable blades includes a root located at the hub, a tip opposite the root, and a leading edge. Each pivotable blade of the plurality of pivotable blades is pivotable relative to the hub about a respective pivot axis. For at least one blade, the leading edge at the root is positioned along a radial axis of the runner and the leading edge at the tip is cantilevered beyond the radial axis in a circumferential direction of the runner.

The utility model relates to the technical field of ocean power generation, solves the problems of low efficiency and low mechanical power of an ocean tidal current energy collecting device caused by limitation of bottleneck factors such as changeable and unfixed tidal current directions, low tidal current speed and difficulty in starting in the prior art, and discloses a tidal current energy collecting device based on a cylindrical fluid theory. The outer wall of the center column is sleeved with a plurality of first bearings. The outer wall of the first bearing is sleeved with the cylinder, first cavities are formed in the two sides of the cylinder, a second cavity is formed in the upper end of the cylinder, a power generation device is fixedly embedded in the second cavity, and a detachable cover plate is fixed to the upper end of the second cavity; the fixed rudder is arranged in the first cavity, the tidal current energy collector is arranged in the first cavity, a main flow channel is formed in the side, away from the fixed rudder, of the cylinder, branch flow channels are directly formed in the main flow channel and the first cavity, the flow velocity of tidal current needed by starting of the device is low, and the tidal current energy can be collected in all directions.

The invention relates to the field of bulb through-flow turbines in hydropower stations, discloses a method for calculating the maximum runaway speed of a bulb through-flow turbine, and solves the problems that in the prior art, a scheme for calculating the maximum runaway speed of the bulb through-flow turbine under the working condition that guide vanes and runner blades are not in joint cooperation is inaccurate in calculation; the difference between the actual value and the actual value is large, and the requirement for hydropower engineering construction of a new device with a bulb tubular water turbine generator set cannot be met. According to the method, data of a large number of bulb tubular hydroelectric generating sets which run well at home and abroad for recent 30 years are collected and arranged, and then a nonlinear regression method is adopted to fit a complex relation among the data, so that a calculation formula of the maximum runaway rotating speed under the non-joint working condition is obtained. In practical application, the maximum runaway rotating speed under the non-joint working condition can be quickly and accurately calculated by substituting the rated specific rotating speed value, the maximum water head value and the nominal diameter value of the rotating wheel of the bulb tubular turbine with the maximum runaway rotating speed to be calculated into the maximum runaway rotating speed calculation formula.

Methods and systems for generating hydrogen gas from a source of pressurized water, for example, from an existing water main of a water distribution system, are provided. The methods and systems employ turbine / generators and water electrolyzers electrically powered by the turbine / generators. The turbine / generators are powered by the energy available in existing water distribution systems, for example, municipal, industrial, or agricultural systems, to access energy that typically is discarded, for example, via a pressure relief valve. The hydrogen gas generated may be used to fuel hydrogen powered vehicles, for example, cars, trucks, and forklifts, or as a fuel for power generation. Excess electrical energy produced by the generator may be distributed to the local power grid. Aspects of the invention may also be used to generate oxygen gas from the electrolysis of water, and then generate ozone gas from the oxygen gas for treating water, among other uses.

The invention discloses a low-energy-consumption hydroelectric generation and irrigation integrated device, and relates to the technical field of hydroelectric generation, the low-energy-consumption hydroelectric generation and irrigation integrated device comprises a power generation assembly, a flow guide assembly, an irrigation assembly and a flow adjusting assembly, irrigation water is guided into the irrigation assembly through the flow guide assembly to achieve irrigation, and the irrigation water flows through the power generation assembly to achieve power generation. According to the low-energy-consumption hydroelectric generation and irrigation integrated device, irrigation water automatically and downwards flows into the spiral pipeline under the action of gravity to drive the power generator to generate power, the advantage that potential energy generated by the irrigation water due to the gravity is converted into kinetic energy is achieved, the inner diameter of the spiral pipeline is wide in the upper portion and narrow in the lower portion, and the irrigation water enters the spiral pipeline after passing through the water inlet pipe; the inner diameter is smaller when the irrigation water flows downwards, the generated pressure is larger, and the height of the spiral pipeline can be adjusted, so that the impact force and the pressure are uniform when the irrigation water impacts the water turbine, the water turbine is protected, and the power generation effect is more stable.

The wide-load high-stability water turbine runner structure comprises an annular worm pipe, an annular support is fixed to the center of the worm pipe, and the worm pipe communicates with the side wall of the annular support; a plurality of flow deflectors are distributed on the circumference of the side wall of the annular support, a rotary drum is rotationally arranged in the center of the annular support, a plurality of blades are distributed around the rotary drum, a center shaft is fixed to the center of the rotary drum, and an output shaft is arranged at the upper end of the center shaft in a sleeving mode; compared with the prior art, the device has the beneficial effects of reducing the shutdown maintenance time, adapting to seasonal water flow changes, improving the power generation efficiency and prolonging the service life of equipment.

A centrifugal turbomachine (1) according to one embodiment includes: a pair of impellers (2A, 2C) in which back surfaces (21) thereof face each other; a shaft (3) interposed between the impellers (2A, 2C); and a fluid bearing (7) that supports the shaft (3) in a non-contact state. The fluid bearing (7) includes a bearing pad (71) in which a plurality of pockets arranged in a circumferential direction are formed on an inner peripheral surface. The centrifugal turbomachine (1) further includes a seal component (8) interposed between the fluid bearing (7) and the high-pressure-side impeller (2A) of the impellers (2A, 2C). The seal component (8) forms a chamber with the bearing pad (71), and the bearing pad (71) is provided with at least one through-hole that penetrates the bearing pad (71) in the axial direction of the shaft (3).

The utility model relates to the technical field of buoy equipment, in particular to a propulsion-power supply integrated buoy which comprises a buoy module, a rotating module arranged below the buoy module and a power generation module arranged in the buoy module. A driving shaft of the power generation module is arranged in the vertical direction, and the lower end of the driving shaft is connected with the rotating module; the rotating module comprises a hydrofoil part, the hydrofoil part comprises a plurality of hydrofoil blades, and a blade rotating shaft of each hydrofoil blade is parallel to the driving shaft and is distributed in the circumferential direction of the driving shaft; switching between a power supply mode and a propulsion mode is achieved by adjusting the angle of each hydrofoil blade, and in the power supply mode, the angle of each hydrofoil blade is adjusted to enable water flow to flow to drive the rotating module to rotate so as to drive a driving shaft of the power generation module to rotate for power generation; and in the propelling mode, the angles of the hydrofoil blades are adjusted, so that lift force in the target advancing direction is generated under the action of water flow, and the buoy is propelled.

The invention relates to a bionic water turbine blade and a three-dimensional structure thereof, which are suitable for an efficient hydroelectric generating set. According to the blade, the hydrodynamic performance is optimized through the outer ridges and the inner ridges which are evenly distributed on the outer contour and the inner contour respectively, the five outer ridges refer to geometric arrangement of fish scales, the stability of a boundary layer is improved, and fluid separation is reduced; the three inner ridges imitate a wing middle shaft framework, and the fluid guiding efficiency is enhanced. The overall shape of the blade simulates the curved surface of a fin, and microstructure bionic optimization is carried out on the surface to reduce water flow resistance and enhance self-cleaning capacity. The blade is made of a high-strength corrosion-resistant alloy material, and a waterproof coating is added on the surface of the blade to adapt to a complex underwater environment. According to the bionic design, the energy capture efficiency, the structural strength and the environmental adaptability of the water turbine are remarkably improved. And by adjusting geometric parameters of the blade and the distribution density of the ridges, different hydroelectric generation working conditions are adapted, and the wide and practical application value is achieved.

The utility model relates to a pipeline generator impeller chamber which is arranged in a pipeline and used for placing an impeller for driving a generator rotor. The impeller chamber comprises a water inlet and a water outlet, the water inlet is connected with the upstream of a pipeline, the water outlet is connected with the downstream of the pipeline, and the inner wall of the impeller chamber comprises two arcs which are different in radius and are concentrically arranged; the water outlet is arranged between the two arcs with different radiuses, and the water inlet of the impeller chamber is lower than the water outlet. Through the irregular circular structure of the impeller chamber, the water flow forms vortex, the kinetic energy of the water flow is fully utilized, and the power generation efficiency can be improved.

The present invention is a marine current turbine featuring a downstream rotor, a faired spar, a deckhouse at the waterline, and a ballasting and mooring arrangement to ensure the center of buoyancy is above the center of gravity to provide a stable platform and ample rotor torque reaction. The faired spar minimizes the wake deficit ingested by the rotor and reduces turbulence and drag on the turbine. The deckhouse provides buoyancy to react to gravitational forces and the downward tension component supplied by the mooring system during maximum platform and rotor drag conditions and reserve buoyancy if a portion of the platform becomes flooded. The mooring arrangement preferably forms a bridle to provide yaw stability.

The invention provides a runner blade optimization method of a mixed-flow water turbine and a runner. The method comprises the steps that a full-flow-channel three-dimensional model of a flow passage component of the mixed-flow water turbine in the water flow direction is established; a mixed turbulence model is selected, boundary conditions are set, simulation results of the runner under different design working conditions and critical working conditions are obtained, and a core loss area restricting maximum output is determined; setting meridian plane parameters, airfoil section parameters and space distortion parameters of the runner blade according to the position of the core loss area; based on the multiple sets of blade parameters, parameterized models of the runner blades are established respectively; comparing and analyzing simulation results of the plurality of parameterized models under the same working condition, and screening target blade parameters with high relevancy with the maximum output; and based on the target blade parameter, optimizing the runner blade so as to improve the maximum output of the mixed-flow water turbine. Through the optimization method provided by the invention, the problems of insufficient flow field coupling consideration, limited parametric modeling dimension, single optimization target and the like are solved.

The invention relates to the field of new energy, in particular to a rainwater power generation and building energy storage peak regulation system which comprises a water storage roof, a water drainage device, a rainwater opening, a rainwater hopper, a rainwater pipe, a power generation device, a water drainage facility, a water storage facility, a water pumping facility, a circuit pipeline and an automatic control device. The water enters the power generation device after being filtered and controlled by the water drainage device, and power is generated by utilizing potential energy of the water. The controlled drainage comprises the steps that during the peak period of power utilization of the power grid, the roof water level is higher than a set value, the water storage roof needs to drain roof water, and the drainage device drains the roof water when the water storage facility needs the roof water. The water pumping includes that when the water level of the water storage facility is higher than a set value and the water level of the roof water is lower than a set value in the power consumption valley period of the power grid, the water pumping facility pumps water into the water storage roof from the water storage facility. The water storage roof has the advantages that heat insulation and cooling are beneficial to building energy conservation; the power generation device can store energy for peak regulation by using roof water for power generation, and energy is saved.

The utility model discloses a water turbine runner and relates to the field of water turbines. Comprising an upper crown leaf disc and a lower ring leaf disc, upper crown blades are arranged on the upper crown leaf disc, lower ring blades are arranged on the lower ring leaf disc, the upper crown leaf disc is divided into an upper crown inner leaf disc and an upper crown outer leaf disc, the upper crown blades are divided into the upper crown inner blades and the upper crown outer blades, and the lower ring leaf disc is divided into a lower ring inner leaf disc and a lower ring outer leaf disc. The lower ring blades are divided into lower ring inner blades and lower ring outer blades; the upper crown blades are in one-to-one correspondence with the lower ring blades, and the upper crown blades are matched with the lower ring blades; one side of the matching position of the upper crown inner blade and the lower ring inner blade is an upper crown side, the other side of the matching position of the upper crown inner blade and the lower ring inner blade is a lower ring side, notches are formed in the upper crown side or the lower ring side or two sides, and supplementary block blades consistent with the notches in shape are arranged at the notches. According to the utility model, the welding amount, the relief grinding amount and the welding deposited metal amount can be reduced, the accurate segmentation of the rotating wheel is realized, the manufacturing manufacturability of welding, relief grinding and processing is met, and the operation risk is reduced.