8526 results about "Impeller" patented technology

Apparatus and methods are described including a ventricular assist device that includes an impeller configured to be placed inside a left ventricle of a subject. A driving magnet is coupled to a motor and is rotated by the motor. A driven magnet is magnetically coupled to the driving magnet and is rotated by the driving magnet. A drive cable extends from the driven magnet and imparts rotational motion from the driven magnet to the impeller. A set of sensors is configured to detect a magnetic phase difference between the driven magnet and the driving magnet. A computer processor receives the detected magnetic phase difference and determines a physiological parameter of the subject, at least partially in response thereto. Other applications are also described.

A mechanical circulatory support (MCS) system having an axial rotary blood pump with an impeller housing having a cylindrical pocket for receiving a magnet and closed by an end ring, requiring only a single circumferential weld and an axial weld. The impeller includes a shaft and one or more blades extending radially from the shaft. An inner and outer wall extend longitudinally from the shaft defining the pocket therebetween. A magnet array is positioned within the pocket and configured to be magnetically driven by an output shaft of a motor. The end ring is coupled to the end of the pocket opposite the shaft thereby encapsulating the magnet array within the pocket. Alignment holes may be provided within a floor of the pocket for orienting and balancing the impeller.

A blood pump includes an impeller; a drive shaft coupled to the impeller and configured to rotate with the impeller; and a rotor coupled to the drive shaft and configured to rotate with the drive shaft. The rotor includes a driven magnet having an outer surface. A corrosion-resistant coating may be disposed on the outer surface of the driven magnet. A stator is disposed adjacent the rotor and configured to drive the rotor, causing the rotor to rotate; and a motor is configured to drive the stator. A protection assembly may be disposed adjacent the stator and configured to receive an end of the drive shaft, and may include a protection assembly housing enclosing a protective fluid chamber, the protective fluid chamber including the driven magnet and at least a portion of a bearing configured to engage the end of the drive shaft.

The invention belongs to the field of aero-engines and turbines, and provides a quick prediction method, system and device for a two-dimensional viscous compressible flow field of a gas compressor and a medium, and the method comprises the steps: obtaining CFD simulation data of a two-dimensional blade profile of the gas compressor under multiple working conditions, and carrying out the preprocessing to obtain a standardized training data set; on the basis of the data set, constructing a hybrid neural network model which takes a blade profile geometric parameter and an operation condition parameter as input and takes a two-dimensional viscous compressible flow field as output; combining mean square error, gradient loss and physical consistency loss based on RANS equation residual error to construct a total loss function, and performing end-to-end training on the model; during reasoning, to-be-predicted parameters are input into the trained model according to the same preprocessing mode, and then a flow field prediction result can be rapidly output. According to the method, the problems of long consumed time, low precision and poor consistency of traditional CFD simulation can be solved, millisecond-level flow field prediction is achieved, high precision and high physical consistency are achieved, and the method is suitable for efficient optimization design of the blade profile of the gas compressor.

The invention relates to the technical field of turbomachinery monitoring, and discloses a cross-dimension turbomachinery dynamic risk prediction and visualization system. A dynamic data acquisition module of the system acquires multi-source heterogeneous sensing data such as a vibration spectrum sequence, an aerodynamic load distribution matrix, a rotor axial displacement time sequence and a surface temperature field thermodynamic diagram in real time; the service degradation evaluation module extracts a vibration characteristic spectrum based on a historical degradation mode library, calculates an instability risk level in combination with an aerodynamic load deviation value, and fuses a displacement sudden change gradient and a temperature difference abnormal area to generate a service degradation track matrix; the multi-dimensional risk prediction module inputs the degradation track matrix into a space-time coupling prediction network, and outputs a dynamic risk assessment vector including time-varying fault probability distribution, a residual life prediction value and a risk propagation path set; and the risk visualization engine module constructs a three-dimensional risk thermal field model and generates a dynamic thermal grid layer superposed on the digital twinborn body.

The invention provides an intelligent diagnosis system and method for a wind turbine impeller-gearbox composite fault, and relates to the technical field of fault diagnosis, and the system comprises a multi-modal data collection module which is used for carrying out the deployment of a multi-source sensor based on coupling path analysis, and collecting the multi-modal data of the multi-source sensor; the tensor matrix construction module is used for constructing a tensor matrix according to the multi-modal data; the fault analysis module is used for constructing a feature-damage mapping model to perform fault analysis on the tensor matrix to obtain a fault diagnosis result; and the fault maintenance module is used for pushing the fault diagnosis result and carrying out fault maintenance according to the fault diagnosis result. According to the invention, the technical problem that the fault diagnosis accuracy and the operation safety and stability of the wind power equipment are affected due to the fact that tiny early faults of key parts of the wind turbine cannot be effectively identified in the prior art can be solved, and the fault diagnosis accuracy and the system response efficiency are improved; the service life of equipment is prolonged; and the maintenance cost is reduced.

The invention relates to the technical field of multi-stage pumps, and particularly discloses a multi-stage pump axial force balancing system which comprises a water inlet section, a water outlet section and a water outlet section. The water outlet section is provided with a pressure relief cavity; two ends of the balance pipe are respectively communicated with the water inlet section and the pressure relief cavity; the two ends of the middle section are communicated with the water inlet section and the water outlet section respectively, an impeller is arranged on the inner wall of the middle section in a matched mode, a flow blocking cavity and a cover plate cavity are formed in the two sides of the impeller, and when the impeller rotates, hydraulic pressure generated by media in the flow blocking cavity to the impeller and hydraulic pressure generated by media in the cover plate cavity to the impeller are balanced; a balancing drum mounted on the pump shaft; the balance rings are mounted on the water outlet section, and the outer wall of the balance drum is sleeved with the balance rings at intervals; wherein the impellers comprise a plurality of first impellers and a plurality of second impellers, and the cover plate cavity corresponding to the second impellers is communicated with the pressure relief cavity through a gap between the balancing drum and the balancing ring. According to the axial force balancing system of the multi-stage pump, the balancing effect of axial force can be improved, and it is ensured that the multi-stage pump runs safely.

The invention discloses a wave-current combined simulation system and method in a low-pressure environment, and relates to the technical field of underwater vehicle hydrodynamic model tests. The defects that in the prior art, sealing and strength are difficult to guarantee in a low-air-pressure environment, and accurate flow velocity and shear gradient control of a multi-layer flow channel cannot be achieved are overcome. According to the technical scheme, the device comprises a low-pressure pool, a plurality of layers of layered water inlet galleries, a plurality of layers of layered water outlet galleries, a rectifying wall, a rectifying baffle, a flow guide grid, a wave absorbing bank, an in-cabin rocking plate type wave maker, a plurality of bottom flow making pump flow making systems, an electric butterfly valve, a high-voltage frequency conversion cabinet, a three-phase asynchronous motor, a gear box, an impeller shaft system and the like. All the devices work cooperatively, and accurate coupling simulation of a multi-layer flow field and high sea condition waves under low air pressure is achieved. The device is suitable for wave-current combined hydrodynamic characteristic simulation and test research of deep-sea navigation bodies and ocean engineering equipment in a low-pressure environment.

An apparatus for an aircraft powerplant includes an impeller rotor and a seal runner. The impeller rotor includes a plurality of fluid circuits. Each of the fluid circuits includes a first outlet passage, a second outlet passage and an inlet passage fluidly coupled to the first outlet passage and the second outlet passage in parallel. The seal runner includes a bore, an inner guide surface and an outer land surface. The seal runner extends circumferentially about the axis and radially between the inner guide surface and the outer land surface. The bore is fluidly coupled to the first outlet passage of each fluid circuit. The inner guide surface forms a radial outer peripheral boundary of the bore. The inner guide surface radially diverges away from the axis as the inner guide surface extends axially away from the impeller rotor and to a distal end of the seal runner.

A flow sensor for sensing fluid flow. The flow sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the flow sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit.

The invention relates to the technical field of feed processing equipment, and discloses an efficient feed mixing stirrer which comprises a machine body, a main stirring assembly, an auxiliary stirring assembly, a driving mechanism, a feeding mechanism, a discharging mechanism and a control system.The machine body is of a horizontal cylindrical structure, and the main stirring assembly is arranged in the center of the interior of the machine body in the axial direction of the machine body; the auxiliary stirring assembly comprises a side wall auxiliary assembly and a bottom auxiliary assembly, and the driving mechanism is in power connection with the main stirring shaft, the side wall auxiliary assembly and the bottom auxiliary assembly through the transmission assembly and provides power for all the assemblies. Through a synergistic stirring structure of the main stirring assembly, the side wall and the bottom auxiliary assembly, a paddle and spiral composite structure of the main stirring assembly pushes materials to realize composite motion in the axial direction and the circumferential direction, stirring teeth of the side wall auxiliary assembly break a material circulation layer, and a scraping plate of the bottom auxiliary assembly prevents deposition of the materials with high density; the three synergistically enable the feed to be uniformly mixed.

The invention relates to an array type underwater propeller with high maneuverability and low energy consumption, a pump jet generating device and a flow divider jointly form a propeller front end, an intelligent fluid director forms a propeller rear end, and the pump jet generating device drives an impeller through a rotating motor to drive surrounding water flow to rotate to generate a main jet flow; an isolation structure is arranged in the flow divider and used for evenly dividing the main jet flow into multiple strands of independent sub jet flows, and all the sub jet flows form propelling power after entering the intelligent flow guider to be guided. The intelligent fluid directors are connected with the flow channels of the flow divider in a one-to-one correspondence mode and used for converting fluid flowing out of the flow divider and out of the jet flow face into effective action jet flow with the adjustable flow speed. The intelligent fluid director comprises a jet flow end regulation and control mechanism and a pressure relief end regulation and control mechanism, and the jet flow end regulation and control mechanism is used for independently regulating the flow speed of effective jet flow ejected from the fluid director; and the pressure relief end regulation and control mechanism is used for maintaining the constant flow velocity at the inlet of the fluid director by releasing part of water flow when the effective jet flow velocity is regulated.

The invention provides a plasma welding tool for water pump impeller machining, and relates to the technical field of welding tools, and the plasma welding tool comprises a basic frame assembly, a rotating mechanism assembly, a lifting adjusting mechanism assembly, a positioning mechanism assembly and an auxiliary welding system. The auxiliary welding system comprises a main control unit, a sensor unit, a parameter storage unit, a welding parameter dynamic generation module and a man-machine interaction unit. According to the scheme, aiming at traditional tool pain points, parameters are dynamically generated through multi-sensor collection and machine learning, PID closed-loop correction is conducted, and the welding quality stability is improved; manual intervention is reduced and the period is shortened by means of automatic regulation and control of the main control unit and man-machine interaction; and different impellers are quickly adapted by virtue of the classification process database and the welding parameter dynamic generation module, so that the adjustment time consumption is reduced, the quality, efficiency and flexibility are comprehensively improved, and the production cost is reduced.

An exhaust turbocharger has a housing, in which a shaft is mounted by bearings, which carries a turbine wheel, on the one hand, and a compressor wheel, on the other hand. An electric machine has a rotor and a stator. The rotor is secured on the shaft for conjoint rotation therewith and the stator surrounds the rotor radially on the outside. A sleeve, which supports the rotor radially and axially, is arranged between the stator and the rotor. The sleeve has at least one fluid duct, by way of which a cooling fluid can be guided toward the bearings of the shaft.

A catheter pump assembly is provided that includes an elongate body, an elongate flexible shaft disposed in the elongate body, and an impeller coupled with the distal end of the elongate flexible shaft. The drive system includes a drive component, a motor and a tension member. The tension member is coupled with the motor and the drive component and to cause the drive component to rotate, and thereby to cause the impeller to rotate.

The invention discloses an energy-saving and efficiency-improving submersible pump for an integrated pump gate. The energy-saving and efficiency-improving submersible pump comprises a gate body and a submersible pump body, the pump body part comprises an impeller, a rotating shaft and a pump shell, the inducer is arranged at the upstream end of the impeller, and the impeller comprises impeller blades and a hub; the device is characterized in that a step part is arranged on the peripheral surface of the lower end part of the hub, the inducer comprises inducing blades and an adjusting cylinder, the upper end of the adjusting cylinder is connected with the step part, the lower end of the adjusting cylinder is connected with an adjusting cap, a drainage cavity is formed among the adjusting cap, the adjusting cylinder and the lower end part of the hub, a first through hole is formed in the adjusting cap, and a second through hole is formed in the adjusting cylinder; third through holes are formed in the induction blades, and the third through holes penetrate to the blade tops of the induction blades. The suction performance of the submersible pump can be improved, the influence of boundary layers between the induction blades and impeller blades and secondary flow on liquid flowing is reduced, and therefore the hydraulic performance and efficiency of the submersible pump can be improved, and the good effects of energy saving and efficiency improving are achieved.

The utility model relates to a water pump. The water pump comprises a pump shell; the pump cover is mounted at the opening end of the pump shell; the shell has a water inlet and a water outlet; the shielding sleeve is arranged in a cavity defined by the pump shell and the pump cover, the cavity is divided into a waterproof cavity and a pump cavity, and the pump cavity is connected with the water inlet and the water outlet; the stator is arranged in the waterproof cavity; the rotor is arranged in the pump cavity, on one hand, the rotor can rotate relative to the shielding sleeve around the axis of the rotor in the first direction under the action of the stator, and on the other hand, the rotor can rotate relative to the shielding sleeve around the axis of the rotor in the second direction under the action of water flow when the water flow flows back to the water inlet from the water outlet; the first direction is opposite to the second direction; the rotor is provided with an impeller, at least part of the impeller extends into the pump cover, and the radial distance between the inner side wall of the pump cover and the outer edge of the impeller is gradually reduced from the water outlet in the second direction. When water flows back from the water outlet to the water inlet, water flow dispersion can be reduced.

The utility model discloses a pre-filter and a water consumption system, and relates to the technical field of filters. Wherein the pre-filter comprises a valve head, a filter bottle, a filter assembly, an outer framework and an impeller assembly, the outer framework is rotatably arranged outside the filter assembly in a sleeving manner, and the impeller assembly comprises a mounting seat fixedly mounted in the water filtering cavity and an impeller body rotatably mounted on the mounting seat; the impeller body and the outer framework are coaxially connected and fixed in the circumferential direction, and the mounting base comprises a first water inlet formed in one axial side, a second water inlet formed in the circumferential side and a water outlet formed in the other axial side. The technical scheme provided by the utility model has the technical effects that the filtering effect of the filtering assembly is ensured, and the service life of the pre-filter is prolonged.

The invention relates to the technical field of chemical production, in particular to a chemical reaction kettle which comprises a double-layer flow guide mechanism, a flow dividing channel and a branch diffusion wheel set. The double-layer flow guide mechanism comprises a lower-layer impeller, an upper-layer impeller and a lifting force rotating channel; the lower-layer impeller is connected with the lower part of the stirring shaft; the upper-layer impeller is connected with the upper part of the stirring shaft; the shunting channel is connected with the inner wall of the middle of the kettle body; the branch diffusion wheel set is connected with the shunting channel; the lifting force rotary channel is connected between the lower-layer impeller and the upper-layer impeller; flowing circulation that the wall surface position of the kettle body descends and the center position of the kettle body ascends is formed by fluid, particulate matter is prevented from being enriched on the inner wall of the kettle body, the circulating center fluid is diffused to the circulating position through the flow dividing channel and the branch flow diffusion wheel set, and it is guaranteed that reactants in the whole kettle body are evenly heated; the problems that a porous heat insulation scale layer is formed on the wall surface of the kettle body when solid particles exist in reactants of a large chemical reaction kettle, so that the reactants cannot be effectively heated, and the energy consumption is increased are solved.

The invention discloses a wind turbine generator impeller anomaly detection method and system based on sound vibration signal identification. According to the method, firstly, impeller response is collected through a microphone / vibration sensor, and a Mel spectrogram is generated; then, a Teager-Kaiser energy operator and self-correlation analysis are utilized, and under the condition of not depending on a rotating speed signal, the rotating period of the impeller is recognized, and frequency spectrum segmentation is carried out; calculating a cross-period Mel frequency spectrum dynamic deviation, and normalizing the cross-period Mel frequency spectrum dynamic deviation through an amplitude correction coefficient related to the rotating speed; generating a periodic coherent energy diagram by adopting an improved structural similarity algorithm; performing filtering enhancement by using a harmonic resonance template, performing morphological deconstruction and parameterization on an abnormal region in the graph, and extracting geometric features; and finally, calculating a comprehensive abnormal score based on the multi-dimensional features and realizing automatic early warning. According to the method, the problems of variable working condition interference and rotating speed dependence are effectively solved, and accurate and stable detection of early abnormality of the impeller can be realized.

The invention discloses a fusion reactor gas injection device and method, and relates to the technical field of fusion engineering. The device comprises a driving air source supply unit used for providing high-speed airflow; the turbocharging unit comprises a turbine and an air compression impeller which are coaxially connected, an inlet of the turbine communicates with the driving air source supply unit, an inlet of the air compression impeller is used for guiding in working air, and the turbine is driven by high-speed airflow to rotate and drives the air compression impeller to rotate so as to compress the working air; an inlet of the high-pressure cavity is communicated with an outlet of the compressor impeller, and the high-pressure cavity is used for storing the compressed working gas to form a high-pressure gas source; the quick valve is arranged on an outlet pipeline of the high-pressure cavity and is used for performing pulse type release on the high-pressure air source; and the directional nozzle is connected to the downstream of the quick valve and is used for injecting the released working gas into the plasma boundary area of the fusion reactor. Therefore, when the fusion reactor gas is injected, the injection pressure can be increased, the response time can be shortened, and accurate regulation and control can be realized.

A horizontal shaft impact crusher and method for adjusting the same is provided. The crusher housing has an inlet for receiving material to be crushed and an outlet for material that has been crushed. The crusher housing includes an impeller, which is mounted on a horizontal shaft and which is operative for rotating around a horizontal axis, a curtain against which material accelerated by the impeller may be crushed, and an adjustment device including an adjustment bar for adjusting the position of the curtain relative to the impeller, a cross beam to which the adjustment bar is connected, the crossbeam being adjustable relative to the impeller, and a drive cylinder arranged for displacing the cross beam to set the position of the curtain relative to the impeller. The drive cylinder includes an internally mounted sensor to measure the curtain position relative to the impeller.

The utility model provides a reaction tank for heat transfer fluid production. The reaction tank comprises a reaction kettle main body, an omnidirectional flow mixing assembly and a convection ring seat, a linear actuator is arranged on the top surface of the reaction kettle main body and drives the omni-directional flow mixing assembly to do lifting motion in the reaction kettle main body. The omni-directional flow mixing assembly comprises a circulating guide cylinder, a driving machine cylinder and a centrifugal impeller, the flow speed of liquid in the circulating guide cylinder is increased through high-speed rotation of the centrifugal impeller, and high-speed conveying and flow mixing stirring of the liquid are achieved. The convection ring seat is positioned at the bottom end of the omnidirectional flow mixing assembly, and liquid convection spraying is performed through a plurality of spraying holes, so that the liquid is fully mixed in the reaction kettle main body, and the stirring uniformity of the liquid is ensured. The liquid mixing device can realize liquid layered mixing in the vertical direction, avoids local uneven mixing, improves the mixing efficiency of heat conduction liquid, and is suitable for efficient stirring of various complex liquids.

The invention relates to the technical field of axial flow fans, in particular to an impeller with S-shaped blades and an axial flow fan applying the impeller. On the axial projection of the impeller, the peripheral contour of each blade is defined by a blade root edge, a blade front edge, a blade outer edge and a blade rear edge, and the blade root edge is connected with the hub; the blade front edge and the blade rear edge are both wavy curves, and the blade root edge and the blade outer edge are both arc-shaped lines with the axis O of the hub as the circle center. Each blade is provided with a pressure face and a suction face, the pressure faces and the suction faces are oppositely arranged, and on the radial projection of the impeller, the pressure faces are arranged in a wave shape in a protruding mode from one end of the blade root edge to one end of the blade rear edge towards the suction faces and then concavely arranged, so that the blades are of an S-shaped structure. The problem that a traditional blade structure cannot meet the use requirements of high efficiency and low noise can be solved.

The invention relates to the technical field of fan machining, in particular to a grabbing retaining device based on air blower impeller assembly, which comprises a two-axis linear module, a mounting frame is fixedly connected to the side surface of a sliding table of the two-axis linear module, a bearing seat is fixedly mounted at the lower end of the mounting frame, and a rotary adjusting mechanism is mounted on the bearing seat. An annular upper cover is fixedly mounted at the lower end of the rotary adjusting mechanism, an annular base is fixedly mounted at the lower end of the annular upper cover, and clamping mechanisms for grabbing the impeller are mounted in the annular upper cover and the annular base; the impeller grabbing device has the beneficial effects that when an impeller needs to be grabbed, the two-axis linear module drives the mounting frame to move so as to adjust the position of the grabbing device, the clamping mechanism moves to the inner side of an impeller cover at the upper end of the impeller, at the moment, the clamping mechanism is driven to rotate through the rotary adjusting mechanism, and clamping claws are located in gaps between blades on the impeller; and the clamping claws are prevented from colliding with the blades in the outward moving process.

The invention relates to the technical field of laser dimension detection, and discloses a laser dimension detection device for water pump accessory production, which comprises dimension detection equipment, and the dimension detection equipment is provided with conveying equipment for assembling a plurality of impeller bodies. Meanwhile, under the mutual cooperation of a laser detection assembly and an angle self-adjusting assembly, under the suction effect of an air pump, two suction cup bodies separated from the blade can be tightly attached to the blade, and then under the suction effect of suction cups, a rubber ring fixed to a reset sliding barrel is tightly attached to the blade; according to a traditional detection method, when facing blades with different distortion angles, manual equipment adjustment, clamp replacement or multiple times of measurement are needed to obtain complete data, the operations are time-consuming and labor-consuming, measurement errors are caused by human factors, and the detection accuracy is high. And the laser size detection device automatically adapts to different distortion angles.

The invention relates to the technical field of welding, and particularly discloses an automatic fan impeller welding device which comprises a supporting frame, the supporting frame serves as a carrier to bear a welding part, a rotatable rotary table is rotationally connected to the outer surface of the middle of the supporting frame, an impeller disc and a rotating piece are placed at the upper end of the rotary table, and the rotating piece comprises a rotating cover plate. The rotating cover plate is located above the impeller disc, the blades are welded to the surface of the impeller disc, the upper rotating plate and the lower rotating plate are simultaneously driven by the calibration clamping motor to be matched with the lower clamping rod and the upper clamping rod, the blades are clamped and fixed in four directions, and the blades are limited and clamped. The upper rotating plate and the lower rotating plate move relative to each other through a planetary gear, four-direction fixing is achieved through a calibration clamping motor, the lower end of the calibration clamping motor is fixedly connected with a bearing plate, the lower end of the bearing plate is provided with a calibration plate driven by a calibration spring, the calibration plate further limits the blades, and therefore the calibration effect of the blades is improved. And six-direction clamping is realized by matching with the structure.

The invention belongs to the technical field of medical instruments, and discloses a magnetic coupling sealing intervention pump which comprises a motor, a first supporting seat, a driving magnetic ring, a driven magnetic ring, an impeller and a first connecting shaft, and the first supporting seat is fixed to the outer wall of the motor in a sealed mode to form a first assembling cavity; the output shaft and the driving magnetic ring are coaxially and fixedly arranged and are both arranged in the first assembling cavity in a sealed mode, and the output shaft rotates to drive the driving magnetic ring to rotate synchronously. The bottom of the first connecting shaft is fixed to the first supporting base, the impeller is rotationally connected with the first connecting shaft, and the driven magnetic ring is fixed to the lower end of the impeller and drives the impeller to rotate synchronously through magnetic torque generated by coupling of the driven magnetic ring and the driving magnetic ring. Rotation of the output shaft of the motor is transmitted to the impeller through magnetic coupling transmission between the driving magnetic ring and the driven magnetic ring, so that direct mechanical connection and sealing structures are not needed between the output shaft of the motor and the impeller, the leakage problem possibly caused by mechanical sealing in a traditional pump is avoided, and the sealing performance and reliability of the intervention pump are improved.

The invention provides an impeller high-temperature over-rotation test device. The impeller high-temperature over-rotation test device comprises a long shaft, an impeller, a press-fitting assembly, a buffer assembly and a fixing piece. The long shaft comprises a first shaft body and a second shaft body which are concentric and different in diameter, the impeller is sleeved on the first shaft body, and press-fitting parts are formed at two ends. The first press-fitting assembly and the second press-fitting assembly are pressed on the press-fitting parts on the two sides of the impeller correspondingly, relative rotation is prevented through the rectangular keys, the double press-fitting assemblies are symmetrically arranged to balance axial force, and rotation stability is improved. The left / right clamping sleeve is matched with the conical surface of the left / right taper sleeve, and a tensioning wire groove is formed to adapt to impellers of different sizes and compensate size changes. The buffering assemblies are arranged in a mirror symmetry mode, the horn mouth design optimizes stress distribution, long-axis thermal expansion is absorbed, and vibration impact is resisted. The fixing piece provides axial fixing force, and the axial rigidity of the system is optimized. The device can ensure the reliable positioning of the impeller at high temperature and ultrahigh speed, and improves the test precision and reliability.

The invention discloses a well drilling fracturing device for oil field yield increase, and relates to the technical field of oil field collection, the well drilling fracturing device comprises a fracturing filtering mechanism and a bottom rotating bearing installed in the fracturing filtering mechanism, the bottom of the fracturing filtering mechanism is provided with a connection sealing mechanism, and the bottom of the connection sealing mechanism is provided with a main pipeline; the fracturing filtering mechanism comprises a filtering support, a plurality of sewage draining holes are formed in the outer side of the filtering support, a worm gear limiting cover is fixedly installed at the bottom of the filtering support, rotating supports are symmetrically installed on the side, close to the interior of the worm gear limiting cover, of the filtering support, and rotating motors are fixedly installed on the outer sides of the rotating supports; by utilizing the structural characteristics of the vortex cleaning impeller, when the vortex cleaning impeller rotates anticlockwise, the temporary plugging agent can move towards the inner side of the filter screen cylinder under the action of the groove in the vortex cleaning impeller, so that the conveying efficiency of the temporary plugging agent is improved, and meanwhile, the vortex cleaning impeller can clean the outer surface of the filter screen cylinder.